WorldWideScience

Sample records for medium energy physics

  1. Medium-energy physics

    International Nuclear Information System (INIS)

    Anon.

    1980-01-01

    One of the basic challenges of medium-energy physics is the development of a clear picure of the manner in which pions propagate in nuclear matter. Since the pion is a basic quantum of the nuclear force, understanding its propagation in nuclei contributes to our understanding of the basic nature of nuclear forces. Key to such understanding is a comprehensive and precise experimental description of pion interactions both with complex nuclei and few nucleon systems. This is a major objective of the ANL effort in medium-energy physics. Experiments are carried out as a part of a comprehensive nuclear program, and, because of this perspective, the pion studies are expected to give new insights into the nature of nuclear forces. At the present time, almost all experimental activity is concentrated on measurements using various pion beams of the Los Alamos Meson Physics Facility

  2. Experimental medium energy physics

    International Nuclear Information System (INIS)

    1989-01-01

    This report discusses the following topics: search for the ξ(2230) at LEAR; hyperon-antihyperon production studies at LEAR; relativistic proton-nucleus and heavy ion-nucleus collisions at the SPS; search for the H dibaryon at the AGS; hypernuclear physics research; CEBAF activities; pion physics at PSI; and H particle experiment design and development

  3. [Medium energy particle physics

    International Nuclear Information System (INIS)

    Nefkens, B.M.K.

    1985-10-01

    Investigations currently carried out by the UCLA Particle Physics Research Group can be arranged into four programs: Pion-Nucleon Scattering; Tests of Charge Symmetry and Isospin Invariance; Light Nuclei (Strong Form Factors of 3 H, 3 He, 4 He; Detailed Balance in pd right reversible γ 3 H; Interaction Dynamics); and Search for the Rare Decay Μ + → e + + γ (MEGA). The general considerations which led to the choice of physics problems investigated by our group are given in the next section. We also outline the scope of the research being done which includes over a dozen experiments. The main body of this report details the research carried out in the past year, the status of various experiments, and new projects

  4. Studies in medium energy physics

    International Nuclear Information System (INIS)

    Green, A.; Hoffmann, G.W.; McDonough, J.; Purcell, M.J.; Ray, R.L.; Read, D.E.; Worn, S.D.

    1991-12-01

    This document constitutes the (1991--1992) technical progress report and continuation proposal for the ongoing medium energy nuclear physics research program supported by the US Department of Energy through special Research Grant DE-FG05-88ER40444. The experiments discussed are conducted at the Los Alamos National Laboratory's (LANL) Clinton P. Anderson Meson Physics Facility (LAMPF) and the Alternating Gradient Synchrotron (AGS) facility of the Brookhaven National Laboratory (BNL). The overall motivation for the work discussed in this document is driven by three main objectives: (1) provide hadron-nucleon and hadron-nucleus scattering data which serve to facilitate the study of effective two-body interactions, test (and possibly determine) nuclear structure, and help study reaction mechanisms and dynamics; (2) provide unique, first-of-a-kind ''exploratory'' hadron-nucleus scattering data in the hope that such data will lead to discovery of new phenomena and new physics; and (3) perform precision tests of fundamental interactions, such as rare decay searches, whose observation would imply fundamental new physics

  5. Medium energy nuclear physics research

    International Nuclear Information System (INIS)

    Peterson, G.A.; Dubach, J.F.; Hicks, R.S.; Miskimen, R.A.

    1992-06-01

    This paper covers the following topics: Experiment 87-02: Threshold Electrodisintegration of the Deuteron at High Q 2 ; Measurement of the 5th Structure Function in Deuterium and 12 C; Single-Particle Densities of sd-Shell Nuclei; Experiment 84-28: Transverse Form Factors of 117 Sn; Experiment 82-11: Elastic Magnetic Electron Scattering from 13 C; Experiment 89-09: Measurement of the Elastic Magnetic Form Factor of 3 He at High Momentum Transfer; Experiment 89-15: Coincidence Measurement of the D(e,e'p) Cross-Section at Low Excitation Energy and High Momentum Transfer; Experiment 87-09: Measurement of the Quadrupole Contribution to the N → Δ Excitation; Experiment E-140: Measurement of the x-, Q 2 and A-Dependence of R = σ L /σ T ; PEP Beam-Gas Event Analysis: Physics with the SLAC TPC/2γ Detector; Drift Chamber Tests at Brookhaven National Laboratory; Experiment PR-89-031: Multi-nucleon Knockout Using the CLAS Detector; Electronics Design for the CLAS Region 1 Drift Chamber; Color Transparencies in the Electroproduction of Nucleon Resonances; and Experiment PR-89-015: Study of Coincidence Reactions in the Dip and Delta-Resonance Regions

  6. Medium energy elementary particle physics

    Energy Technology Data Exchange (ETDEWEB)

    1991-01-01

    This report discusses the following topics: muon beam development at LAMPF; muon physics; a new precision measurement of the muon g-2 value; measurement of the spin-dependent structure functions of the neutron and proton; and meson factories. (LSP)

  7. Medium energy nuclear physics research

    International Nuclear Information System (INIS)

    Peterson, G.A.; Dubach, J.F.; Hicks, R.S.; Miskimen, R.A.

    1988-09-01

    The UMass group has concentrated on using electromagnetic probes, particularly the electron in high-energy scattering experiments at the Stanford Liner Accelerator Center (SLAC). Plans are also being made for high energy work at the Continuous Beam Accelerator Facility (CEBAF). The properties of this accelerator should permit a whole new class of coincidence experiments to be carried out. At SLAC UMass has made major contributions toward the plans for a cluster-jet gas target and detector system at the 16 GeV PEP storage ring. For the future CEBAF accelerator, tests were made of the feasibility of operating wire drift chambers in the vicinity of a continuous electron beam at the University Illinois microtron. At the same time a program of studies of the nuclear structure of more complex nuclei has been continued at the MIT-Bates Linear Accelerator Center and in Amsterdam at the NIKHEF-K laboratory. At the MIT-Bates Accelerator, because of an unforeseen change in beam scheduling as a result of problems with the T 20 experiment, the UMass group was able to complete data acquisition on experiments involving 180 degrees elastic magnetic scattering on 117 Sn and 41 Ca. A considerable effort has been given to preparations for a future experiment at Bates involving the high-resolution threshold electrodisintegration of the deuteron. The use of these chambers should permit a high degree of discrimination against background events in the measurement of the almost neutrino-like small cross sections that are expected. In Amsterdam at the NIKHEF-K facility, single arm (e,e') measurements were made in November of 1987 on 10 B in order to better determine the p 3/2 wave function from the transition from the J pi = 3 + ground state to the O + excited state at 1.74 MeV. In 1988, (e,e'p) coincidence measurements on 10 B were completed. The objective was to obtain information on the p 3/2 wave function by another means

  8. Medium energy nuclear physics research

    International Nuclear Information System (INIS)

    Peterson, G.A.; Dubach, J.F.; Hicks, R.S.; Miskimen, R.A.

    1991-06-01

    This report discusses research conducted on the following topics: transverse from factors of 117 Sn; elastic magnetic electron scattering from 13 C at Q 2 = 1 GeV 2 /c 2 ; a re-analysis of 13 C elastic scattering; deuteron threshold electrodisintegration; measurement of the elastic magnetic form factor of 3 He at high momentum transfer; coincidence measurement of the D(e,e'p) cross-section at low excitation energy and high momentum transfer; measurement of the quadrupole contribution to the N → Δ excitation; measurement of the x-, Q 2 -, and A-dependence of R = σ L /σ T ; the PEGASYS project; PEP beam-gas event analysis; plans for other experiments at SLAC: polarized electron scattering on polarized nuclei; experiment PR-89-015: study of coincidence reactions in the dip and delta-resonance regions; experiment PR-89-031: multi-nulceon knockout using the CLAS detector; drift chamber tests; a memorandum of understanding and test experiments; photoprotons from 10 B; and hadronic electroproduction at LEP

  9. [Spin dependent phenomena in medium energy physics

    International Nuclear Information System (INIS)

    Souder, P.A.

    1992-11-01

    The Syracuse University Medium Energy Physics Group was actively engaged in several research projects. A laser was used to polarize muonic atoms with the goal of measuring fundamental spin-dependent parameters in the reaction μ - + 3 He → 3 H + ν. Time-averaged polarizations of 26.8±2.3% were achieved for the muon in muonic 3 He. The new approach uses atomic spin-dependent reactions between laser polarized Rb vapor and muonic helium. To exploit these high polarizations in a muon capture experiment an ion chamber which will detect the recoil tritons and also serve as a polarizing cell. Final data-taking will begin for an experiment to measure the spin-dependent structure functions of the neutron. A 288-element hodoscope system which features good timing and precise mechanical tolerances was constructed and evaluated

  10. [Medium energy physics at Syracuse University: Technical progress report

    International Nuclear Information System (INIS)

    Souder, P.A.

    1986-01-01

    The primary focus of research has been an experiment at the MIT-Bates Linear Accelerator Center to measure the spin-dependence of elastic scattering of electrons from carbon. The Syracuse University Medium Energy Physics Group is also part of a collaboration which will measure the tensor polarization of deuterons scattered by electrons. Finally, analysis has been completed for an experiment at LAMPF in which the first observation of the exotic ion μ + e - e - was made. 17 refs., 18 figs., 2 tabs

  11. Theoretical studies in medium-energy nuclear and hadronic physics

    International Nuclear Information System (INIS)

    Horowitz, C.J.; Macfarlane, M.H.; Matsui, T.; Serot, B.D.

    1993-01-01

    A proposal for theoretical nuclear physics research is made for the period April 1, 1993 through March 31, 1996. Research is proposed in the following areas: relativistic many-body theory of nuclei and nuclear matter, quasifree electroweak scattering and strange quarks in nuclei, dynamical effects in (e,e'p) scattering at large momentum transfer, investigating the nucleon's parton sea with polarized leptoproduction, physics of ultrarelativistic nucleus endash nucleus collisions, QCD sum rules and hadronic properties, non-relativistic models of nuclear reactions, and spin and color correlations in a quark-exchange model of nuclear matter. Highlights of recent research, vitae of principal investigators, and lists of publications and invited talks are also given. Recent research dealt primarily with medium-energy nuclear physics, relativistic theories of nuclei and the nuclear response, the nuclear equation of state under extreme conditions, the dynamics of the quark endash gluon plasma in relativistic heavy-ion collisions, and theories of the nucleon endash nucleon force

  12. AGS experiments in nuclear/QCD physics at medium energies

    International Nuclear Information System (INIS)

    Lo Presti, P.

    1998-07-01

    This report contains a diagram of the experimental setup for each experiment as well as giving a brief discussion of its purpose and list of collaborators for the experiment. Thirty-one experiments in the areas of nuclear physics and particle physics are covered. It concludes with a list of publications of the AGS experiments

  13. AGS experiments in nuclear/QCD physics at medium energies

    Energy Technology Data Exchange (ETDEWEB)

    Lo Presti, P.

    1998-07-01

    This report contains a diagram of the experimental setup for each experiment as well as giving a brief discussion of its purpose and list of collaborators for the experiment. Thirty-one experiments in the areas of nuclear physics and particle physics are covered. It concludes with a list of publications of the AGS experiments.

  14. A Program in Medium-Energy Nuclear Physics

    Energy Technology Data Exchange (ETDEWEB)

    Feldman, Gerald [George Washington Univ., Washington, DC (United States)

    2015-03-23

    We report here on the final stages of the Berman grant. The study of the spectrum and properties of the excited states of the nucleon (the N* states) is one of the highest-priority goals of nuclear physics and one of the major programs of Jefferson Lab, especially in Hall B. We have most recently focused our attention on exclusive studies (in both spin and strangeness) of the neutron in the deuteron. Our g13 experiment, “Production of Kaons from the Deuteron with Polarized Photons” [Nadel-Turonski (2006)], was carried out between October 2006 and June 2007. This experiment was done using both linearly and circularly polarized photons, mainly to try to unscramble the multitude of wide and overlapping N* states and to measure their properties by studying in fine detail their decays into strange-particle reaction channels. To this end, one of our students, Edwin Munevar, has analyzed the γn→K+Σ- reaction channel for his Ph.D. topic. The strangeness-production channels constitute the subject of the original GW group’s g13 proposal. But the g13 data set, by virtue of its statistics, polarization, and kinematic coverage, is ideally suited for many other reaction channels as well. Among these is the azimuthal angular asymmetry for deuteron photodisintegration, which was analyzed by another of our students, Nicholas Zachariou, for his Ph.D. topic, with help from Nickolay Ivanov (from the Yerevan Physics Institute in Armenia). This study required a deuterium target and a linearly polarized photon beam.

  15. A Program in Medium-Energy Nuclear Physics

    International Nuclear Information System (INIS)

    Feldman, Gerald

    2015-01-01

    We report here on the final stages of the Berman grant. The study of the spectrum and properties of the excited states of the nucleon (the N* states) is one of the highest-priority goals of nuclear physics and one of the major programs of Jefferson Lab, especially in Hall B. We have most recently focused our attention on exclusive studies (in both spin and strangeness) of the neutron in the deuteron. Our g13 experiment, @@@Production of Kaons from the Deuteron with Polarized Photons@@@ [Nadel-Turonski (2006)], was carried out between October 2006 and June 2007. This experiment was done using both linearly and circularly polarized photons, mainly to try to unscramble the multitude of wide and overlapping N* states and to measure their properties by studying in fine detail their decays into strange-particle reaction channels. To this end, one of our students, Edwin Munevar, has analyzed the @@n@@@K + @@ - reaction channel for his Ph.D. topic. The strangeness-production channels constitute the subject of the original GW group@@@s g13 proposal. But the g13 data set, by virtue of its statistics, polarization, and kinematic coverage, is ideally suited for many other reaction channels as well. Among these is the azimuthal angular asymmetry for deuteron photodisintegration, which was analyzed by another of our students, Nicholas Zachariou, for his Ph.D. topic, with help from Nickolay Ivanov (from the Yerevan Physics Institute in Armenia). This study required a deuterium target and a linearly polarized photon beam.

  16. Analysis of low and medium energy physics records in databases. Science and technology indicators in low and medium energy physics. With particular emphasis on nuclear data

    International Nuclear Information System (INIS)

    Hillebrand, C.D.

    1998-12-01

    An analysis of the literature on low and medium energy physics, with particular emphasis on nuclear data, was performed on the basis of the contents of the bibliographic database INIS (International Nuclear Information System). Quantitative data were obtained on various characteristics of relevant INIS records such as subject categories, language and country of publication, publication types, etc. Rather surprisingly, it was found that the number of records in nuclear physics has remained nearly constant over the last decade. The analysis opens up the possibility of further studies, e.g. on international research co-operation and on publication patterns. (author)

  17. Medium-energy physics program. Progress report, February 1--April 1, 1976

    International Nuclear Information System (INIS)

    Dunn, E.

    1976-09-01

    A quarterly report on the medium-energy physics program at LAMPF is given. Topics covered include: (1) engineering support; (2) accelerator support; (3) accelerator systems development; (4) injector systems; (5) electronic instrumentation and computer systems; (6) accelerator operations; (7) experimental areas; (8) beam line development; (9) large-spectrometer systems; (10) research; (11) nuclear chemistry; (12) practical applications of LAMPF; and (13) management

  18. Medium-energy physics program. Progress report, August 1--October 31, 1977

    International Nuclear Information System (INIS)

    van Dyck, O.B.; Dunn, E.D.

    1978-05-01

    A report is given of the medium-energy physics program at the LAMPF linac for the period from August 1 through October 31, 1977. Topics discussed include: (1) accelerator facilities and development; (2) the main beam lines; (3) experimental areas; (4) research; (5) nuclear chemistry; (6) practical applications; (7) linac technology; and (8) management

  19. Medium-energy physics program. Progress report, February 1--April 1, 1976

    Energy Technology Data Exchange (ETDEWEB)

    Dunn, E. (comp.)

    1976-09-01

    A quarterly report on the medium-energy physics program at LAMPF is given. Topics covered include: (1) engineering support; (2) accelerator support; (3) accelerator systems development; (4) injector systems; (5) electronic instrumentation and computer systems; (6) accelerator operations; (7) experimental areas; (8) beam line development; (9) large-spectrometer systems; (10) research; (11) nuclear chemistry; (12) practical applications of LAMPF; and (13) management. (PMA)

  20. P-986 Letter of Intent: Medium-Energy Antiproton Physics at Fermilab

    Energy Technology Data Exchange (ETDEWEB)

    Asner, David M. [Carleton Univ., Ottawa, ON (Canada); Phillips, Thomas J. [Duke Univ., Durham, NC (United States); Apollinari, Giorgio [Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Broemmelsiek, Daniel R. [Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Brown, Charles N. [Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Christian, David C. [Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Derwent, Paul [Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Gollwitzer, Keith [Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Hahn, Alan [Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Papadimitriou, Vaia [Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Stefanski, Ray [Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Werkema, Steven [Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); White, Herman B. [Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Baldini, Wander [Istituto Nazionale di Fisica Nucleare (INFN), Ferrara (Italy); Stancari, Giulio [Istituto Nazionale di Fisica Nucleare (INFN), Ferrara (Italy); Stancari, Michelle [Istituto Nazionale di Fisica Nucleare (INFN), Ferrara (Italy); Jackson, Gerald P. [Hbar Technologies, Chicago, IL (United States); Kaplan, Daniel M. [Illinois Inst. of Technology, Chicago, IL (United States); Torun, Yagmur [Illinois Inst. of Technology, Chicago, IL (United States); White, Christopher G. [Illinois Inst. of Technology, Chicago, IL (United States); Park, HyangKyu [HyungPook National Univ., DaeGu (Korea, Republic of); Pedlar, Todd K. [Luther College, Decorah, IA (United States); Gustafson, H. Richard [Univ. of Michigan, Ann Arbor, MI (United States); Rosen, Jerome [Northwestern Univ., Evanston, IL (United States); Wayne, Mitchell [Univ. of Notre Dame, IN (United States); Chakravorty, Alak [St. Xavier Univ., Chicago, IL (United States); Dukes, E. Craig [Univ. of Virginia, Charlottesville, VA (United States)

    2009-02-05

    Fermilab has long had the world's most intense antiproton source. Despite this, the opportunities for medium-energy antiproton physics at Fermilab have been limited in the past and - with the antiproton source now exclusively dedicated to serving the needs of the Tevatron Collider - are currently nonexistent. The anticipated shutdown of the Tevatron in 2010 presents the opportunity for a world-leading medium-energy antiproton program. We summarize the current status of the Fermilab antiproton facility and review some physics topics for which the experiment we propose could make the world's best measurements. Among these, the ones with the clearest potential for high impact and visibility are in the area of charm mixing and CP violation. Continued running of the Antiproton Source following the shutdown of the Tevatron is thus one of the simplest ways that Fermilab can restore a degree of breadth to its future research program. The impact on the rest of the program will be minor. We request a small amount of effort over the coming months in order to assess these issues in more detail.

  1. A program in medium-energy nuclear physics. Progress report, January 1, 1992--March 31, 1995

    Energy Technology Data Exchange (ETDEWEB)

    Berman, B.L.; Dhuga, K.S.

    1994-08-01

    This renewal proposal requests continued funding for our program in experimental medium-energy nuclear physics. The focus of our program remains the understanding of the short-range part of the strong interaction in the nuclear medium. In the past three years we have focused our attention ever more sharply on experiments with real tagged photons at CEBAF. We are part of the Hall-B Collaboration at CEBAF. We are co-spokespersons on two approved CEBAF experiments, Photoreactions on {sup 3}He and Photoabsorption and Photofission of Nuclei, and we are preparing another, Nondiffractive Photoproduction of the {rho} Meson with Linearly Polarized Photons, for presentation to the next CEBAF PAC. We are part of the team that is instrumenting the Photon Tagger and a high-energy tagged polarized-photon beam for Hall B; some of the instrumentation for these projects is being built at our Nuclear Detector Laboratory, under the auspices of The George Washington University Center for Nuclear Studies. Our recent measurements of pion scattering from {sup 3}H and {sup 3}He at LAMPF and of cluster knockout from few-body nuclei at NIKHEF have yielded very provocative results, showing the importance of the very light nuclei as a laboratory for quantifying important aspects of the nuclear many-body force. We look forward to expanding our studies of short-range forces in nuclei, particularly the very fight nuclei using electromagnetic probes and employing the extraordinary power of CEBAF and the CLAS.

  2. A program in medium-energy nuclear physics. Renewal proposal and progress report August 1, 1994

    International Nuclear Information System (INIS)

    Berman, B.L.; Dhuga, K.S.

    1994-01-01

    This renewal proposal requests continued funding for our program in experimental medium-energy nuclear physics. The focus of our program remains the understanding of the short-range part of the strong interaction in the nuclear medium. In the past three years we have focused our attention ever more sharply on experiments with real tagged photons at CEBAF. We are part of the Hall-B Collaboration at CEBAF. We are co-spokespersons on two approved CEBAF experiments, Photoreactions on 3 He and Photoabsorption and Photofission of Nuclei, and we are preparing another, Nondiffractive Photoproduction of the ρ Meson with Linearly Polarized Photons, for presentation to the next CEBAF PAC. We are part of the team that is instrumenting the Photon Tagger and a high-energy tagged polarized-photon beam for Hall B; some of the instrumentation for these projects is being built at our Nuclear Detector Laboratory, under the auspices of The George Washington University Center for Nuclear Studies. Our recent measurements of pion scattering from 3 H and 3 He at LAMPF and of cluster knockout from few-body nuclei at NIKHEF have yielded very provocative results, showing the importance of the very light nuclei as a laboratory for quantifying important aspects of the nuclear many-body force. We look forward to expanding our studies of short-range forces in nuclei, particularly the very fight nuclei using electromagnetic probes and employing the extraordinary power of CEBAF and the CLAS

  3. A program in medium energy nuclear physics. Progress report and continuation proposal October 1, 1995

    International Nuclear Information System (INIS)

    Berman, B.L.; Dhuga, K.S.

    1995-01-01

    This progress report and continuation proposal summarizes our achievements for the period from July 1, 1994 to September 30, 1995 and requests continued funding for our program in experimental medium-energy nuclear physics. The focus of our program remains the understanding of the short-range part of the strong interaction in the nuclear medium. In the past year we have focused our attention ever more sharply on experiments with real tagged photons, and we have successfully defended two new experimental proposals: Photofission of Actinide and Preactinide Nuclei at SAL and Photoproduction of the ρ Meson from the Proton with Linearly Polarized Photons at CEBAF. (We are co-spokespersons on two previously approved Hall-B experiments at CEBAF, Photoreactions on 3 He and Photoabsorption and Photofission of Nuclei.) As part of the team that is instrumenting the Photon Tagger for Hall B; we report excellent progress on the focal-plane detector array that is being built at our Nuclear Detector Laboratory, as well as progress on our plans for instrumentation of a tagged polarized-photon beam using coherent bremsstrahlung. Also, we shall soon receive a large computer system (from the SSC) which will form the basis for our new Data Analysis Center, which, like the Nuclear Detector Laboratory, will be operated under the auspices of The George Washington University Center for Nuclear Studies. Finally, during the past year we have published six more papers on the results of our measurements of pion scattering at LAMPF and of electron scattering at NIKHEF and Bates, and we can report that nearly all of the remaining papers documenting this long series of measurements are in the pipeline

  4. Experimental medium energy physics. Annual progress report, June 1983-May 1984

    International Nuclear Information System (INIS)

    1984-01-01

    During the past year the principal activities of the C-MU Medium Energy Physics Group have included running of previously approved experiments, the development of hardware and software for new experiments, continued analysis of previously accumulated data, and the development of model calculations to be compared with these data. Major data runs have taken place on a hypernuclear experiment (AGS 781) at the AGS, and on an antiproton run at CERN/LEAR (PS-185). In addition, planning is continuing for further hypernuclear lifetime measurements in 4 5 He, and for a possible search for the H-particle. For these experiments extensive hardware and software development has taken place, requiring much of the group's effort. In our ongoing studies of the pion annihilation mechanism, the emphasis has shifted from two-body processes to those involving three-body final states. A large effort is being devoted to the analysis of our (π,xy) data accumulated at LAMPF on targets of 6 7 Li, 14 N, 16 O and CD 2 . During the year considerable effort was devoted to Monte Carlo simulations of the rare weak decay K + → π + nu anti nu; this experiment has been approved as AGS 787. In addition, work has continued on the development of model calculations of the (π,pp) and anti pp → anti ΛΛ reactions

  5. Experimental Medium Energy Physics annual progress report, June 1984-May 1985

    International Nuclear Information System (INIS)

    1985-01-01

    During the past year the principal activities of the CMU Medium Energy Physics Group have included the running of three previously approved experiments, the development of hardware and software for these experiments, and final analysis of previously accumulated data. In a two week run at LEAR at the beginning of this year 100 data tapes were collected on experiment PS-185. This spring sigma hyperon production in Lithium was studied in a run on AGS experiment E-774. We are currently setting up AGS experiment E-788 in an investigation of Lambda weak decay in Helium hypernuclei. In addition a new experiment to search for strangeness S = -2 dibaryon production was presented and approved by the AGS program advisory committee for 1000 h (E-813). For these experiments extensive hardware and software development has taken place, requiring much of the group's effort. Analysis of LEAR experiment PS-185 is in full progress at CMU. Both the weak decay studies of 12 C (AGS E-759) and the pion annihilation studies in Lithium and Oxygen have now been fully analyzed with the results submitted for publication in several papers. All of these activities are described. Specific hardware and software projects are discussed

  6. Theoretical studies in medium-energy nuclear and hadronic physics. [Indiana Univ. Nuclear Theory Center and Department of Physics

    Energy Technology Data Exchange (ETDEWEB)

    Horowitz, C J; Macfarlane, M H; Matsui, T; Serot, B D

    1993-01-01

    A proposal for theoretical nuclear physics research is made for the period April 1, 1993 through March 31, 1996. Research is proposed in the following areas: relativistic many-body theory of nuclei and nuclear matter, quasifree electroweak scattering and strange quarks in nuclei, dynamical effects in (e,e[prime]p) scattering at large momentum transfer, investigating the nucleon's parton sea with polarized leptoproduction, physics of ultrarelativistic nucleus[endash]nucleus collisions, QCD sum rules and hadronic properties, non-relativistic models of nuclear reactions, and spin and color correlations in a quark-exchange model of nuclear matter. Highlights of recent research, vitae of principal investigators, and lists of publications and invited talks are also given. Recent research dealt primarily with medium-energy nuclear physics, relativistic theories of nuclei and the nuclear response, the nuclear equation of state under extreme conditions, the dynamics of the quark[endash]gluon plasma in relativistic heavy-ion collisions, and theories of the nucleon[endash]nucleon force.

  7. Experimental medium energy physics. Annual progress report, June 1985-May 1986

    International Nuclear Information System (INIS)

    1986-01-01

    During the past year the CMU Medium Energy Physics Group has been involved in the running of three experiments. In addition, software and hardware for two new experiments scheduled to take place over the next few months have been developed. A new proposal, ''Search for a Strangeness -2 Dibaryon Using a 3 He Target,'' was submitted to the Brookhaven Program Advisory Committee and recently approved. In the spring of this year, studies of hypernuclear decay shifted to few body systems. Data on the decay of 5 /sub Λ/He was taken along with preliminary data on 4 /sub Λ/He. This was followed a month later by a run at LEAR to study anti ΛΛ production. The high statistics runs should allow extraction of the spin correlation coefficients not previously obtainable and also includes a detailed study at threshold. In December, a second run at LEAR began the start of anti ΛΣ production studies and tested the ability to measure K/sub s/K/sub s/ production; this channel will be used to search for the ξ(2230) in the summer of 1986. In preparation for the ξ(2230) search, extensive Monte Carlo simulations have been performed at CMU to aid in the design of the detector system. Data analysis routines from hyperon production studies were modified and the first K/sub s/K/sub s/ event was extracted from existing data. The CMU group has had extensive involvement in an experiment to search for strangeness production relativistic heavy ion collisions. Hardware to provide the online analysis and data storage facilities for the experiment has been purchased and developed. CMU personnel has also worked on the development of software with the flexibility required to monitor this complex experiment. 37 refs., 53 figs., 8 tabs

  8. From nuclei to hypernuclei: A retrospective view of medium energy physics at Brookhaven

    Energy Technology Data Exchange (ETDEWEB)

    Chrien, R.E.

    2000-10-23

    A new frontier in physics originated with programs at two Brookhaven National Laboratory facilities--the Cosmotron and the Alternating Gradient Synchrotron. The development of this frontier over a half century is described, as it turned from conventional nuclear physics to the hypernuclei and the study of strange matter.

  9. From nuclei to hypernuclei: A retrospective view of medium energy physics at Brookhaven

    International Nuclear Information System (INIS)

    Chrien, R.E.

    2000-01-01

    A new frontier in physics originated with programs at two Brookhaven National Laboratory facilities--the Cosmotron and the Alternating Gradient Synchrotron. The development of this frontier over a half century is described, as it turned from conventional nuclear physics to the hypernuclei and the study of strange matter

  10. Medium energy elementary particle physics. Technical progress report, August 1, 1990--June 30, 1991

    Energy Technology Data Exchange (ETDEWEB)

    1991-12-31

    This report discusses the following topics: muon beam development at LAMPF; muon physics; a new precision measurement of the muon g-2 value; measurement of the spin-dependent structure functions of the neutron and proton; and meson factories. (LSP)

  11. Experimental medium-energy physics. Annual progress report, October 1980-June 1981

    International Nuclear Information System (INIS)

    1981-01-01

    Research from October 1980 to June 1981 at Carnegie-Mellon University in experimental nuclear physics is summarized. Studies included: hypernuclei of carbon 13, nitrogen 14, and oxygen 18; momentum space calculations of kaon-nucleus elastic scattering; and pion annihilation in Lithium 7 via 7 Li (π,pd) 4 He

  12. Theoretical aspects of electroweak and other interactions in medium energy physics

    International Nuclear Information System (INIS)

    Mukhopadhyay, N.C.

    1990-01-01

    The project, supported by the Department of Energy grant, deals with the theory of electroweak and other interactions of nucleons and nuclei, with emphasis on the electromagnetic production of mesons, and the theory of hadron structure inspired by quantum chromodynamics. On these topics, twenty-seven papers and other scientific communications have been completed during the current project period, April 1988 to present, including a number of invited papers presented at international meetings and workshops. One student has got his Ph.D. degree, and two working toward it; the latter have been rewarded by the organizers of the PANIC-XII Conference at MIT (June 1990) with financial support to present their papers A DEC-3100 workstation has been installed for the dedicated use of this project, and it has been upgraded with additional funding from Rensselaer and Digital Equipment Corporation. A new research collaboration with Professor F. Iachello, a theorist from Yale University has been started

  13. Medium-Energy Antiproton Physics with the Antiproton Annihilation Spectrometer (TApAS*) at Fermilab

    Energy Technology Data Exchange (ETDEWEB)

    Bartoszek, Larry [Bartoszek Engineering, Aurora, IL (United States); Piacentino, Giovanni M. [Univ. of Cassino (Italy); Phillips, Thomas J. [Duke Univ., Durham, NC (United States); Apollinari, Giorgio [Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Broemmelsiek, Daniel R. [Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Brown, Charles N. [Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Christian, David C. [Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Derwent, Paul; Gollwitzer, Keith [Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Hahn, Alan [Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Papadimitriou, Vaia [Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Stancari, Giulio [Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Stancari, Michelle [Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Stefanski, Ray [Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Volk, James T. [Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Werkema, Steven [Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Wester, Willam [Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); White, Herman B. [Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Yeh, G. P. [Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Baldini, Wander [Istituto Nazionale di Fisica Nucleare (INFN), Ferrara (Italy); Jackson, Gerald P. [Hbar Technologies, Chicago, IL (United States); Lau, Kwong [Univ. of Houston, TX (United States); Kaplan, Daniel M. [Illinois Inst. of Technology, Chicago, IL (United States); Torun, Yagmur [Illinois Inst. of Technology, Chicago, IL (United States); White, Christopher G. [Illinois Inst. of Technology, Chicago, IL (United States). et al.

    2008-01-01

    We propose to assemble a cost-effective, yet powerful, solenoidal magnetic spectrometer for antiproton-annihilation events and use it at the Fermilab Antiproton Accumulator to measure the charm production cross section, study rare hyperon decays, search for hyperon CP asymmetry, and precisely measure the properties of several charmonium and nearby states. Should the charm production cross section be as large as some have proposed, we will also be able to measure D{sup 0}-{bar D}{sup 0} mixing with high precision and discover (or sensitively limit) charm CP violation. The experiment will be carried out by an international collaboration, with installation occurring during the accelerator downtime following the completion of the Tevatron run, and with funding largely from university research grants. The experiment will require some four years of running time. As possibly the sole hadron experiment in progress at Fermilab during that time, it will play an important role in maintaining a broad particle-physics program at Fermilab and in the U.S.

  14. Experimental medium energy physics

    International Nuclear Information System (INIS)

    Barnes, P.D.

    1990-01-01

    This report discusses the following topics: search for the H-dibaryon at the AGS; weak interaction studies with hypernuclear decays at the AGS; search for the ξ(2230) at LEAR; relativistic proton-nucleus and heavy ion-nucleus collisions at the SPS; hyperon-antihyperon production studies at LEAR; photoproduction of strange CEBAF; and experiment design development

  15. Medium energy heavy ion operations at RHIC

    International Nuclear Information System (INIS)

    Drees, K.A.; Ahrens, L.; Bai, M.; Beebe-Wang, J.; Blackler, I.M.C.; Blaskiewicz, M.; Brown, K.A.; Brennan, M.; Bruno, D.; Butler, J.; Carlson, C.; Connolly, R.; D'Ottavio, T.; Fischer, W.; Fu, W.; Gassner, D.; Harvey, M.; Hayes, T.; Huang, H.; Hulsart, R.; Ingrassia, P.; Kling, N.; Lafky, M.; Laster, J.; Lee, R.C.; Litvinenko, V.; Luo, Y.; MacKay, W.W.; Marr, G.; Mapes, M.; Marusic, A.; Mernick, K.; Michnoff, R.; Minty, M.; Montag, C.; Morris, J.; Naylor, C.; Nemesure, S.; Pilat, F.; Ptitsyn, V.; Robert-Demolaize, G.; Roser, T.; Sampson, P.; Satogata, T.; Schoefer, V.; Schultheiss, C.; Severino, F.; Shrey, T.; Smith, K.S.; Tepikian, S.; Thieberger, P.; Trbojevic, D.; Tsoupas, N.; Tuozzolo, J.; van Kuik, B.; Wilinski, M.; Zaltsman, A.; Zeno, K.; Zhang, S.Y.

    2011-01-01

    As part of the search for a phase transition or critical point on the QCD phase diagram, an energy scan including 5 different energy settings was performed during the 2010 RHIC heavy ion run. While the top beam energy for heavy ions is at 100 GeV/n and the lowest achieved energy setpoint was significantly below RHICs injection energy of approximately 10 GeV/n, we also provided beams for data taking in a medium energy range above injection energy and below top beam energy. This paper reviews RHIC experience and challenges for RHIC medium energy operations that produced full experimental data sets at beam energies of 31.2 GeV/n and 19.5 GeV/n. The medium energy AuAu run covered two beam energies, both above the RHIC injection energy of 9.8 GeV but well below the standard store energy of 100 GeV (see table 1). The low energy and full energy runs with heavy ions in FY10 are summarized in (1) and (2). Stochastic Cooling ((3)) was only used for 100 GeV beams and not used in the medium energy run. The efficiency of the transition from 100 GeV operation to 31.2 GeV and then to 19.5 GeV was remarkable. Setup took 32 h and 19 h respectively for the two energy settings. The time in store, defined to be the percentage of time RHIC provides beams in physics conditions versus calendar time, was approximately 52% for the entire FY10 heavy ion run. In both medium energy runs it was well above this average, 68% for 31.5 GeV and 82% for 19.5 GeV. For both energies RHIC was filled with 111 bunches with 1.2 10 9 and 1.3 10 9 ions per bunch respectively.

  16. Medium energy heavy ion operations at RHIC

    Energy Technology Data Exchange (ETDEWEB)

    Drees, K.A.; Ahrens, L.; Bai, M.; Beebe-Wang, J.; Blackler, I.M.C.; Blaskiewicz, M.; Brown, K.A.; Brennan, M.; Bruno, D.; Butler, J.; Carlson, C.; Connolly, R.; D' Ottavio, T.; Fischer, W.; Fu, W.; Gassner, D.; Harvey, M.; Hayes, T.; Huang, H.; Hulsart, R.; Ingrassia, P.; Kling, N.; Lafky, M.; Laster, J.; Lee, R.C.; Litvinenko, V.; Luo, Y.; MacKay, W.W.; Marr, G.; Mapes. M.; Marusic, A.; Mernick, K.; Michnoff, R.; Minty, M.; Montag, C.; Morris, J.; Naylor, C.; Nemesure, S.; Pilat, F.; Ptitsyn, V.; Robert-Demolaize, G.; Roser, T.; Sampson, P.; Satogata, T.; Schoefer, V.; Schultheiss, C.; Severino, F.; Shrey, T.; Smith, K.S.; Tepikian, S.; Thieberger, P.; Trbojevic, D.; Tsoupas, N.; Tuozzolo, J.; van Kuik, B.; Wilinski, M.; Zaltsman, A.; Zeno, K.; Zhang, S.Y.

    2011-03-28

    As part of the search for a phase transition or critical point on the QCD phase diagram, an energy scan including 5 different energy settings was performed during the 2010 RHIC heavy ion run. While the top beam energy for heavy ions is at 100 GeV/n and the lowest achieved energy setpoint was significantly below RHICs injection energy of approximately 10 GeV/n, we also provided beams for data taking in a medium energy range above injection energy and below top beam energy. This paper reviews RHIC experience and challenges for RHIC medium energy operations that produced full experimental data sets at beam energies of 31.2 GeV/n and 19.5 GeV/n. The medium energy AuAu run covered two beam energies, both above the RHIC injection energy of 9.8 GeV but well below the standard store energy of 100 GeV (see table 1). The low energy and full energy runs with heavy ions in FY10 are summarized in [1] and [2]. Stochastic Cooling ([3]) was only used for 100 GeV beams and not used in the medium energy run. The efficiency of the transition from 100 GeV operation to 31.2 GeV and then to 19.5 GeV was remarkable. Setup took 32 h and 19 h respectively for the two energy settings. The time in store, defined to be the percentage of time RHIC provides beams in physics conditions versus calendar time, was approximately 52% for the entire FY10 heavy ion run. In both medium energy runs it was well above this average, 68% for 31.5 GeV and 82% for 19.5 GeV. For both energies RHIC was filled with 111 bunches with 1.2 10{sup 9} and 1.3 10{sup 9} ions per bunch respectively.

  17. Hadron photoproduction at medium energy

    International Nuclear Information System (INIS)

    Dainton, J.B.

    1985-04-01

    Results from measurements of multibody photoproduction at medium incident photon energy (2.8 to 4.8 GeV) are presented and discussed. Particular emphasis is placed on topics which are not well understood and which therefore motivate experiments with the upgraded electron accelerator and storage ring ELSA at the University of Bonn, FR Germany. (author)

  18. Medium-energy ion reflection from solids

    CERN Document Server

    Mashkova, ES

    1985-01-01

    ``Medium-Energy Ion Reflection from Solids'' analyses the results of experimental, theoretical and computer investigations on the process of scattering of ions by solid surfaces. Surface scattering is a relatively young and rapidly developing branch of the physics of atomic collisions and the literature on this subject has rapidly grown.As the first monograph devoted specifically to surface scattering of ions, this book is directed at scientists involved in ion-solid interaction studies.

  19. Physical processes in the interstellar medium

    CERN Document Server

    Spitzer, Lyman

    2008-01-01

    Physical Processes in the Interstellar Medium discusses the nature of interstellar matter, with a strong emphasis on basic physical principles, and summarizes the present state of knowledge about the interstellar medium by providing the latest observational data. Physics and chemistry of the interstellar medium are treated, with frequent references to observational results. The overall equilibrium and dynamical state of the interstellar gas are described, with discussions of explosions produced by star birth and star death and the initial phases of cloud collapse leading to star formation.

  20. A Proposal to the Department of Energy for The Fabrication of a Very High Energy Polarized Gama Ray Beam Facility and A Program of Medium Energy Physics Research at The National Synchrotron Light Source

    Energy Technology Data Exchange (ETDEWEB)

    Sandorfi, A.M.; LeVine, M.J.; Thorn, C.E.; Giordano, G.; Matone, G.

    1982-09-01

    This proposal requests support for the fabrication and operation of a modest facility that would provide relatively intense beams of monochromatic and polarized photons with energies in the range of several hundreds of MeV. These {gamma} rays would be produced by Compton backscattering laser light from the electrons circulating in the 2.5-3.0 GeV 'X-RAY' storage ring of the National Synchrotron Light Source (NSLS) at Brookhaven National Laboratory. The excellent emittance, phase space, and high current of this state-of-the-art storage ring will allow the production of 2 x 10{sup 7} {gamma} rays per second. These photons would be tagged by detecting the scattered electrons, thereby determining the energy to 2.7 MeV for all {gamma}-ray energies. The efficiency of this tagging procedure is 100% and the {gamma}-ray beam would be essentially background free. Tagging will also allow the flexibility of operating with a dynamic range as large as 200 MeV in photon energy while still preserving high resolution and polarization. These beams will permit a fruitful study of important questions in medium-energy nuclear physics. The initial goals of this program are to reach reliable operation with photon energies up to 300 MeV and to develop {gamma}-ray beams with energies up to about 500 MeV. To demonstrate reliable operation, a modest physics program is planned that, for the most part, utilizes existing magnets and detector systems but nonetheless addresses several important outstanding problems. Gamma ray beams of the versatility, intensity, energy, and resolution that can be achieved at this facility are not currently available at any other world facility either existing or under construction. Furthermore, the proposed program would produce the first intense source of medium-energy {gamma} rays that are polarized. Because of the difficulties in producing such polarized beams, it is very unlikely that viable alternate sources can be developed in the near future; at

  1. The physical state of the intergalactic medium

    International Nuclear Information System (INIS)

    Barcons, X.; Fabian, A.C.; Rees, M.J.

    1991-01-01

    Because the process of galaxy formation is most unlikely to be perfectly efficient, there is a strong possibility that some baryonic gas remains outside collapsed structures such as galaxies and clusters of galaxies. What fraction of the baryonic content of the Universe resides in this intergalactic medium (IGM) and what physical state it is in are open questions. Here we use observational limits on the density of neutral hydrogen in the IGM, on the lack of deviations from a black-body spectrum of the cosmic microwave background (MBR), and on the extragalactic component of the soft X-ray background (XRB) to constrain the state of the IGM. From the lack of MBR fluctuations, any energetic IGM (containing as much energy as the binding energy in galaxies) is inferred to be smoothly distributed on scales greater than galactic. This rules out hot IGM models for the origin of the hard X-ray background, as well as the hypothesis that cosmic explosions may have given rise to cosmological structure on scales larger than galaxies. (author)

  2. Medium energy elementary particle physics: Technical progress report, 11/1/86 thru 5/28/87

    International Nuclear Information System (INIS)

    1987-01-01

    We have searched for spontaneous conversion of muonium (M identical to μ + e - ) to antimuonium (anti M identical to μ - e + ) at LAMPF. When μ + of 10 MeV/c pass through an Al foil (0.2 mg/cm 2 ), M atoms with kinetic energies of 1 to 20 keV are formed by e - -capture. They pass a drift space of 342 cm, of which 206 cm is magnetically shielded to ≤20 mG, and are stopped on a 1 μm thick Bi target, which was evaporated onto a 2 mil mylar backing and coated with 75 A of MgO. The impact of M or anti M atoms on the target liberates about 5 secondary electrons each with kinetic energies of a few eV. These are electrostatically collected and guided onto a microchannel plate detector, using electric fields of about 100 V/cm. We have counted M at 1 to 20 keV with 50% efficiency using this 0.4 m 2 area active target. If an oscillation of M to anti M has occurred, stopping an anti M atom will entail formation of a Biμ - atom and emission of its characteristic muonic x rays. The crystal box detector then detects the coincident Lα and Kα x rays at 4% efficiency. The anti M event signature was defined as a triple coincidence of a Biμ - Lα x ray, a Kα x ray, and a count in the M(anti M) secondary emission counter. No statistically significant signal was seen and our preliminary data analysis yields an upper limit of G/sub M anti M/ ≤ 8 G/sub F/ (95% C.L.) on the coupling constant of a four-Fermion contact interaction. The current published limit is G/sub M anti M/ ≤ 20 G/sub F/. A conversion of M to anti M is forbidden in the standard model, since it would violate additive lepton flavor conservation. However, an alternative theory based on a lef-tright symmetric model allows the M → anti M coupling at G/sub M anti M/ - 10 G/sub F/. 8 refs., 4 figs

  3. Hydrogen as an energy medium

    Science.gov (United States)

    Cox, K. E.

    1976-01-01

    Coal, though abundant in certain geographical locations of the USA poses environmental problems associated with its mining and combustion. Also, nuclear fission energy appears to have problems regarding safety and radioactive waste disposal that are as yet unresolved. The paper discusses hydrogen use and market projection along with energy sources for hydrogen production. Particular attention is given to hydrogen production technology as related to electrolysis and thermochemical water decomposition. Economics of hydrogen will ultimately be determined by the price and availability of future energy carriers such as electricity and synthetic natural gas. Thermochemical methods of hydrogen production appear to offer promise largely in the efficiency of energy conversion and in capital costs over electrolytic methods.

  4. Why high energy physics

    International Nuclear Information System (INIS)

    Diddens, A.N.; Van de Walle, R.T.

    1981-01-01

    An argument is presented for high energy physics from the point of view of the practitioners. Three different angles are presented: The cultural consequence and scientific significance of practising high energy physics, the potential application of the results and the discovery of high energy physics, and the technical spin-offs from the techniques and methods used in high energy physics. (C.F.)

  5. Relativistic energy loss in a dispersive medium

    DEFF Research Database (Denmark)

    Houlrik, Jens Madsen

    2002-01-01

    The electron energy loss in a dispersive medium is obtained using macroscopic electrodynamics taking advantage of a static frame of reference. Relativistic corrections are described in terms of a dispersive Lorentz factor obtained by replacing the vacuum velocity c by the characteristic phase...... velocity c/n, where n is the complex index of refraction. The angle-resolved energy-loss spectrum of a Drude conductor is analyzed in detail and it is shown that the low-energy peak due to Ohmic losses is enhanced compared to the classical approximation....

  6. Physics of energy conversion

    CERN Document Server

    Krischer, Katharina

    2015-01-01

    Covers the physical basis of the most important energy conversion processes used for energy supply. Provides the fundamentals and a scientific understanding of the physics behind thermal power plants, solar cells and power plants, batteries and fuels cells as well as energy storage devices.

  7. On the polarized beam acceleration in medium energy synchrotrons

    International Nuclear Information System (INIS)

    Lee, S.Y.

    1992-01-01

    This lecture note reviews physics of spin motion in a synchrotron, spin depolarization mechanisms of spin resonances, and methods of overcoming the spin resonances during acceleration. Techniques used in accelerating polarized ions in the low/medium energy synchrotrons, such as the ZGS, the AGS, SATURNE, and the KEK PS and PS Booster are discussed. Problems related to polarized proton acceleration with snakes or partial snake are also examined

  8. Medium energy hadron scattering from nuclei

    International Nuclear Information System (INIS)

    Ginocchio, J.N.; Wenes, G.

    1986-01-01

    The Glauber approximation for medium energy scattering of hadronic projectiles from nuclei is combined with the interacting boson model of nuclei to produce a transition matrix for elastic and inelastic scattering in algebraic form which includes coupling to all the intermediate states. We present closed form analytic expresions for the transition matrix elements for the three dynamical symmetries of the interacting boson model; that is for, a spherical quadrupole vibrator, a γ unstable rotor, and both prolate and oblate axially symmetric rotors. We give examples of application of this formalism to proton scattering from 154 Sm and 154 Gd. 27 refs., 5 figs., 1 tab

  9. A medium energy neutron deep penetration experiment

    International Nuclear Information System (INIS)

    Amian, W.; Cloth, P.; Druecke, V.; Filges, D.; Paul, N.; Schaal, H.

    1986-11-01

    A deep penetration experiment conducted at the Los Alamos WNR facility's Spallation Neutron Target is compared with calculations using intra-nuclear-cascade and S N -transport codes installed at KFA-IRE. In the experiment medium energy reactions induced by neutrons between 15 MeV and about 150 MeV inside a quasi infinite slab of iron have been measured using copper foil monitors. Details of the experimental procedure and the theoretical methods are described. A comparison of absolute reaction rates for both experimentally and theoretically derived reactions is given. The present knowledge of the corresponding monitor reaction cross sections is discussed. (orig.)

  10. Theoretical high energy physics

    International Nuclear Information System (INIS)

    Lee, T.D.

    1991-01-01

    This report discusses theoretical research in high energy physics at Columbia University. Some of the research topics discussed are: quantum chromodynamics with dynamical fermions; lattice gauge theory; scattering of neutrinos by photons; atomic physics constraints on the properties of ultralight-ultraweak gauge bosons; black holes; Chern- Simons physics; S-channel theory of superconductivity; charged boson system; gluon-gluon interactions; high energy scattering in the presence of instantons; anyon physics; causality constraints on primordial magnetic manopoles; charged black holes with scalar hair; properties of Chern-Aimona-Higgs solitons; and extended inflationary universe

  11. Microscopic optical potential at medium energies

    International Nuclear Information System (INIS)

    Malecki, A.

    1979-01-01

    The problems concerning a microscopic optical model for the elastic nuclear collisions at medium energies are discussed. We describe the method for constructing the optical potential which makes use of the particular properties of quantum scattering in the eikonal limit. The resulting potential is expressed in terms of the nuclear wave functions and the nucleon-nucleon scattering amplitudes. This potential has a dynamic character since by including the effects of multiple scattering it allows for the possibility of intermediate excitations of the projectile and target nuclei. The use of the potential in the exact wave equation accounts for the most important mechanisms present in the collisions between composite particles. The microscopic optical model was successfully applied in the analysis of elastic scattering of protons and α-particles on atomic nuclei in the energy range of 300-1000 MeV/nucleon. The dynamic optical potential in this case represents a considerable improvement over the eikonal Glauber model and the static optical potential of Watson. The possibilities to extend the microscopic description of the proton-nucleus interaction by considering the spin dependence of the elementary amplitude and the Majorana exchange effects were investigated. (author)

  12. Strong interactions studies with medium energy probes

    International Nuclear Information System (INIS)

    Seth, K.K.

    1993-10-01

    This progress report refers to the period August 1992 to August 1993, which includes the first year of the three-year period December 1, 1992--November 30, 1995 of the existing research contract. As anticipated in the 1992--1995 proposal the major preoccupation during 1992--1993 was with Fermilab experiment E760. This experiment, whose primary objective is to make very high-resolution study of Charmonium Spectroscopy via proton-antiproton annihilations, has turned out to be a veritable gold-mine of exciting hadronic physics in other areas as well. These include the proton from factor in the time-life region, proton-antiproton forward scattering, QCD scaling laws, and light quark spectroscopy. A large fraction of the data from E760 have been analyzed during this year, and several papers have been published. In addition to the E760 experiment at Fermilab continued progress was made earlier nuclear physics-related experiments at LAMPF, MIT, and NIKHEF, and their results for publication. Topics include high- resolution electron scattering, quasi-free electron scattering and low-energy pion double charge exchange

  13. Theoretical high energy physics

    International Nuclear Information System (INIS)

    Lee, T.D.

    1992-01-01

    This progress report discusses research by Columbia University staff in high energy physics. Some of the topics discussed are as follows: lattice gauge theory; quantum chromodynamics; parity doublets; solitons; baryon number violation; black holes; magnetic monopoles; gluon plasma; Chern-Simons theory; and the inflationary universe

  14. Medium energy measurements of n-n parameters. Progress report, January 1-December 31, 1985

    International Nuclear Information System (INIS)

    1986-01-01

    This document constitutes a progress report (1985-86) for the ongoing medium energy nuclear physics research program. A major part of the work has been and will continue to be associated with research done at the Nucleon Physics Laboratory (NPL) at the Los Alamos Meson Physics Facility (LAMPF). The aim of the experimental program is the determination of the nucleon-nucleon amplitudes at medium energy. The required data include both elastic and inelastic experiments, and in addition the measurement of polarization and polarization transfer parameters. We have been emphasizing single pion production measurements using polarized proton beams, and expect that our present data base will provide stringent tests of theoretical models. With the development of the LAMPF high intensity polarized proton source, we expect that a reasonably intense beam of medium energy polarized neutrons will become available, and are planning a series of experiments utilizing polarized neutrons to determine the importance of the I = 0 reaction amplitudes at medium energies

  15. Nuclear structure and reaction studies at medium energies

    International Nuclear Information System (INIS)

    Hoffmann, G.W.; Ray, R.L.

    1990-10-01

    This document constitutes the (1988--1991) technical progress report for the ongoing medium energy physics research program supported by the US Department of Energy through special Research Grant FG05-88ER40444. The experiments discussed are conducted at the Los Alamos National Laboratory's (LANL) Clinton P. Anderson Meson Physics Facility (LAMPF), the Alternating Gradient Synchrotron (AGS) facility of the Brookhaven National Laboratory (BNL), and at the Fermi National Accelerator Laboratory (FNAL). The overall motivation for the work discussed in this document is driven by three main objectives: (1) provide hadron-nucleon and hadron-nucleus scattering data which serve to facilitate the study of effective two-body interactions, test (and possibly determine) nuclear structure, and help study reaction mechanisms and dynamics;(2) provide unique, first-of-a-kind ''exploratory'' hadron-nucleus scattering data in the hope that such data will lead to discovery of new phenomena and new physics; and (3) perform precision tests of fundamental interactions, such as rare decay searches, whose observation would imply fundamental new physics

  16. Physics of energy conversion

    International Nuclear Information System (INIS)

    Rax, Jean-Marcel

    2015-01-01

    This book gathers courses on the physics of energy conversion proposed in France and abroad, and mainly in the Orsay Faculty of Science and in the Ecole Polytechnique. It more particularly addresses the study of concepts and methods related to the physics of irreversible processes, within a perspective of identification and analysis of mechanisms of entropy production, and the description and physical analysis of principles and limitations of magneto-hydrodynamic, thermoelectric, thermo-ionic, photovoltaic and electrochemical generators. The chapters address the following issues and themes: conversion and dissipation (conservation and conversion, collisions, fluctuations and transport), energy and entropy (conservation and evolution, Boltzmann and Gibbs factors), Markovian evolutions (Markovian processes, energy conversion and transitions, Boltzmann and Fokker-Planck kinetic equations), dissipative flows (thermodynamic flows and forces, energy conversion and linear transport), heat and chemical engines (Carnot heat engine, Van't Hoff heat engine, endo-reversible heat engines), magneto hydrodynamic conversion (electro-hydrodynamic conversion, Alfven-Saha plasma model, magneto-hydrodynamic coupling, Hall and Faraday converters), thermo-ionic conversion (Lorentz-Sommerfeld models of metals, Richardson-Dushman relationship, Langmuir and Schottky diodes), thermo-electric conversion (conventional semiconductor model, thermo-electric effects, thermo-electric engines), photovoltaic conversion (Planck model of heat radiation, photovoltaic conversion, photovoltaic P-N junction), and electrochemical conversion (Nernst model of redox equilibrium, over-voltage and polarizations, fuel cells)

  17. Theoretical High Energy Physics

    Energy Technology Data Exchange (ETDEWEB)

    Christ, Norman H.; Weinberg, Erick J.

    2014-07-14

    we provide reports from each of the six faculty supported by the Department of Energy High Energy Physics Theory grant at Columbia University. Each is followed by a bibliography of the references cited. A complete list of all of the publications in the 12/1/2010-04/30/2014 period resulting from research supported by this grant is provided in the following section. The final section lists the Ph.D. dissertations based on research supported by the grant that were submitted during this period.

  18. High energy nuclear physics

    International Nuclear Information System (INIS)

    Meyer, J.

    1988-01-01

    The 1988 progress report of the High Energy Nuclear Physics laboratory (Polytechnic School, France), is presented. The Laboratory research program is focused on the fundamental physics of interactions, on the new techniques for the acceleration of charged particles and on the nuclei double beta decay. The experiments are performed on the following topics: the measurement of the π 0 inclusive production and the photons production in very high energy nuclei-nuclei interactions and the nucleon stability. Concerning the experiments under construction, a new detector for LEP, the study and simulation of the hadronic showers in a calorimeter and the H1 experiment (HERA), are described. The future research programs and the published papers are listed [fr

  19. Theoretical high energy physics

    International Nuclear Information System (INIS)

    Lee, T.D.

    1990-05-01

    This report discusses progress on theoretical high energy physics at Columbia University in New York City. Some of the topics covered are: Chern-Simons gauge field theories; dynamical fermion QCD calculations; lattice gauge theory; the standard model of weak and electromagnetic interactions; Boson-fermion model of cuprate superconductors; S-channel theory of superconductivity and axial anomaly and its relation to spin in the parton model

  20. FSU High Energy Physics

    Energy Technology Data Exchange (ETDEWEB)

    Prosper, Harrison B. [Florida State Univ., Tallahassee, FL (United States); Adams, Todd [Florida State Univ., Tallahassee, FL (United States); Askew, Andrew [Florida State Univ., Tallahassee, FL (United States); Berg, Bernd [Florida State Univ., Tallahassee, FL (United States); Blessing, Susan K. [Florida State Univ., Tallahassee, FL (United States); Okui, Takemichi [Florida State Univ., Tallahassee, FL (United States); Owens, Joseph F. [Florida State Univ., Tallahassee, FL (United States); Reina, Laura [Florida State Univ., Tallahassee, FL (United States); Wahl, Horst D. [Florida State Univ., Tallahassee, FL (United States)

    2014-12-01

    The High Energy Physics group at Florida State University (FSU), which was established in 1958, is engaged in the study of the fundamental constituents of matter and the laws by which they interact. The group comprises theoretical and experimental physicists, who sometimes collaborate on projects of mutual interest. The report highlights the main recent achievements of the group. Significant, recent, achievements of the group’s theoretical physicists include progress in making precise predictions in the theory of the Higgs boson and its associated processes, and in the theoretical understanding of mathematical quantities called parton distribution functions that are related to the structure of composite particles such as the proton. These functions are needed to compare data from particle collisions, such as the proton-proton collisions at the CERN Large Hadron Collider (LHC), with theoretical predictions. The report also describes the progress in providing analogous functions for heavy nuclei, which find application in neutrino physics. The report highlights progress in understanding quantum field theory on a lattice of points in space and time (an area of study called lattice field theory), the progress in constructing several theories of potential new physics that can be tested at the LHC, and interesting new ideas in the theory of the inflationary expansion of the very early universe. The focus of the experimental physicists is the Compact Muon Solenoid (CMS) experiment at CERN. The report, however, also includes results from the D0 experiment at Fermilab to which the group made numerous contributions over a period of many years. The experimental group is particularly interested in looking for new physics at the LHC that may provide the necessary insight to extend the standard model (SM) of particle physics. Indeed, the search for new physics is the primary task of contemporary particle physics, one motivated by the need to explain certain facts, such as the

  1. High energy physics

    International Nuclear Information System (INIS)

    Kernan, A.; Shen, B.C.; Ma, E.

    1997-01-01

    This proposal is for the continuation of the High Energy Physics program at the University of California at Riverside. In hadron collider physics the authors will complete their transition from experiment UA1 at CERN to the DZERO experiment at Fermilab. On experiment UA1 their effort will concentrate on data analysis at Riverside. At Fermilab they will coordinate the high voltage system for all detector elements. They will also carry out hardware/software development for the D0 muon detector. The TPC/Two-Gamma experiment has completed its present phase of data-taking after accumulating 160 pb - 1 of luminosity. The UC Riverside group will continue data and physics analysis and make minor hardware improvement for the high luminosity run. The UC Riverside group is participating in design and implementation of the data acquisition system for the OPAL experiment at LEP. Mechanical and electronics construction of the OPAL hadron calorimeter strip readout system is proceeding on schedule. Data analysis and Monte Carlo detector simulation efforts are proceeding in preparation for the first physics run when IEP operation comenses in fall 1989

  2. High energy physics

    Energy Technology Data Exchange (ETDEWEB)

    Kernan, A.; Shen, B.C.; Ma, E.

    1997-07-01

    This proposal is for the continuation of the High Energy Physics program at the University of California at Riverside. In hadron collider physics the authors will complete their transition from experiment UA1 at CERN to the DZERO experiment at Fermilab. On experiment UA1 their effort will concentrate on data analysis at Riverside. At Fermilab they will coordinate the high voltage system for all detector elements. They will also carry out hardware/software development for the D0 muon detector. The TPC/Two-Gamma experiment has completed its present phase of data-taking after accumulating 160 pb{sup {minus}}1 of luminosity. The UC Riverside group will continue data and physics analysis and make minor hardware improvement for the high luminosity run. The UC Riverside group is participating in design and implementation of the data acquisition system for the OPAL experiment at LEP. Mechanical and electronics construction of the OPAL hadron calorimeter strip readout system is proceeding on schedule. Data analysis and Monte Carlo detector simulation efforts are proceeding in preparation for the first physics run when IEP operation comenses in fall 1989.

  3. High energy physics

    International Nuclear Information System (INIS)

    Fortney, L.R.; Goshaw, A.T.; Walker, W.D.

    1991-01-01

    This progress report presents a review of research done over the past five years by the Duke High Energy Physics Group. This research has been centered at Fermilab where we have had a continuing involvement with both the Tevatron collider and fixed-target programs. In 1988 we began extensive detector R ampersand D for the SSC through its Major Subsystem Program. Duke has been an active member of the Solenoidal Detector Collaboration (SDC) since its formation. These last five years has also been used to finish the analysis of data from a series of hybrid bubble chamber experiments which formed the core of Duke's research program in the early 1980's

  4. (Medium energy spin physics with lasers)

    Energy Technology Data Exchange (ETDEWEB)

    Cates, G.D.

    1992-01-01

    During the first two years of this program, we have successfully investigated two new methods for the production of polarized muonic helium. This work was done at LAMPF in collarboration with a group from Syracuse University. Traditionally, polarized muonic helium has been formed by stopping polarized muons in unpolarized atoms. Unfortunately, because of depolarization in the muon cascade to the ground state, residual polarizations are only {approximately}3%. The two methods we have developed both achieve much higher muon polarizations. To accomplish our goals, we first developed an appropriate muon beam for use with our small gas targets. During the summer of 1990, we stopped unpolarized negative muons in nuclear polarized {sup 3}He. The muons were polarized in the cascade to the ground state through the hyperfine interaction with the nucleus. The resulting muon polarizations were 7.2 {plus minus} 0.8% for a 100% nuclear polarized target. While higher polarizations are clearly desirable for practical purposes, this experiment yielded important insights on spin interactions that occur in muonic atoms. Also, the ability to rapidly reverse the target polarization gave the experiment good sensitivity with minimal systematic effects. Last summer, we completed an experiment in which we polarized muonic helium by direct spin interaction with an optically pumped Rb vapor. In this technique, the muonic helium atom is polarized through a combination of charge exchange and spin exchange with the polarized valence electron of the Rb vapor. In contrast to the technique described in appendix A, the {sup 3}He nuclei are not polarized. This last technique yielded dramatic polarizations approaching 50%.

  5. Medium range energy proton nuclear scattering radiography

    International Nuclear Information System (INIS)

    Duchazeaubeneix, J.C.

    1982-02-01

    This thesis is concerned with a new application of the strong nuclear interaction aiming to radiographic analysis. In this work, some physical processes have been analyzed with detail; these processes play a fundamental role in method quality and limitations; they have been detailed to facilitate comprehension to scientists who are not nuclear physicists. To better appreciate specific qualities of the RDN (Radiography par Diffusion Nucleaire), a chapter reviews strong nuclear interaction properties. Then, the experimental device is described, processing and acquisition system. Spatial resolution and sensitivity limits are studied. Results are presented [fr

  6. High energy physics

    International Nuclear Information System (INIS)

    Kernan, A.; Shen, B.C.; Ma, E.

    1997-01-01

    This proposal is for the continuation of the High Energy Physics Program at the University of California, Riverside. In 1990, we will concentrate on analysis of LEP data from the OPAL detector. We expect to record 10 5 Z's by the end of 1989 and 10 6 in 1990. This data will be used to measure the number of quark-lepton families in the universe. In the second half of 1990 we will also be occupied with the installation of the D-Zero detector in the Tevatron Collider and the preparation of software for the 1991 run. A new initiative made possible by generous university support is a laboratory for detector development at UCR. The focus will be on silicon strip tracking detectors both for the D-Zero upgrade and for SSC physics. The theory program will pursue further various mass-generating radiative mechanisms for understanding small quark and lepton masses as well as some novel phenomenological aspects of supersymmetry

  7. Computing in high energy physics

    International Nuclear Information System (INIS)

    Watase, Yoshiyuki

    1991-01-01

    The increasingly important role played by computing and computers in high energy physics is displayed in the 'Computing in High Energy Physics' series of conferences, bringing together experts in different aspects of computing - physicists, computer scientists, and vendors

  8. Medium Access Control in Energy Harvesting - Wireless Sensor Networks

    DEFF Research Database (Denmark)

    Fafoutis, Xenofon

    Focusing on Wireless Sensor Networks (WSN) that are powered by energy harvesting, this dissertation focuses on energy-efficient communication links between senders and receivers that are alternating between active and sleeping states of operation. In particular, the focus lies on Medium Access......, collision avoidance, provision of Quality of Service (QoS) and security. Focusing on the particular requirements of an energy harvesting application, the dissertation continues with the presentation of a MAC protocol, named ODMAC, which extends the receiver-initiated paradigm with several energy......-efficient features that aim to adapt the consumed energy to match the harvested energy, distribute the load with respect to the harvested energy, decrease the overhead of the communication, address the requirements for collision avoidance, prioritize urgent traffic and secure the system against beacon replay attacks...

  9. In-medium effects around the Fermi energy

    Directory of Open Access Journals (Sweden)

    Lopez O.

    2015-01-01

    Full Text Available We study nuclear stopping in central collisions for heavy-ion induced reactions in the Fermi energy domain (15-100 AMeV. Using the large dataset provided by the 4π array INDRA, we determine that stopping can be directly related to the transport properties in the nuclear medium. By looking specifically at protons, we present a comprehensive body of experimental results concerning the mean free path, the nucleon-nucleon cross-section and in-medium effects in nuclear matter.

  10. Conference on High Energy Physics

    CERN Document Server

    2016-01-01

    Conference on High Energy Physics (HEP 2016) will be held from August 24 to 26, 2016 in Xi'an, China. This Conference will cover issues on High Energy Physics. It dedicates to creating a stage for exchanging the latest research results and sharing the advanced research methods. HEP 2016 will be an important platform for inspiring international and interdisciplinary exchange at the forefront of High Energy Physics. The Conference will bring together researchers, engineers, technicians and academicians from all over the world, and we cordially invite you to take this opportunity to join us for academic exchange and visit the ancient city of Xi’an.

  11. Problems of high energy physics

    International Nuclear Information System (INIS)

    Kadyshevskij, V.G.

    1989-01-01

    Some problems of high energy physics are discussed. The main attention is paid to describibg the standard model. The model comprises quantum chromodynamics and electroweak interaction theory. The problem of CP breaking is considered as well. 8 refs.; 1 tab

  12. Research in high energy physics

    International Nuclear Information System (INIS)

    1992-01-01

    This report discusses research being conducted in high energy physics in the following areas; quantum chromodynamics; drift chambers; proton-antiproton interactions; particle decays; particle production; polarimeters; quark-gluon plasma; and conformed field theory

  13. Research in high energy physics

    International Nuclear Information System (INIS)

    1992-01-01

    This report discusses research being conducted in high energy physics in the following areas: quantum chromodynamics; drift chambers; proton-antiproton interactions; particle decays; particle production; polarimeters; quark-gluon plasma; and conformed field theory

  14. [Research in high energy physics

    International Nuclear Information System (INIS)

    1991-01-01

    This report discusses progress in the following research in high energy physics: The crystal ball experiment; delco at PEP; proton decay experiment; MACRO detector; mark III detector; SLD detector; CLEO II detector; and the caltech L3 group

  15. Energy: Between Physics and Metaphysics.

    Science.gov (United States)

    Bunge, Mario

    2000-01-01

    The general concept of energy is somewhat unclear as long as it is confined to physics since every chapter of it defines its own particular concept of energy. The general concept can be elucidated in terms of the hypergeneral concepts of concrete things and changeability. Concludes that physicists and philosophers can learn from one another.…

  16. Theoretical high energy physics

    International Nuclear Information System (INIS)

    Lee, T.D.

    1993-01-01

    Brief reports are given on the work of several professors. The following areas are included: quantum chromodynamics calculations using numerical lattice gauge theory and a high-speed parallel computer; the ''spin wave'' description of bosonic particles moving on a lattice with same-site exclusion; a high-temperature expansion to 13th order for the O(4)-symmetric φ 4 model on a four-dimensional F 4 lattice; spin waves and lattice bosons; superconductivity of C 60 ; meson-meson interferometry in heavy-ion collisions; baryon number violation in the Standard Model in high-energy collisions; hard thermal loops in QCD; electromagnetic interactions of anyons; the relation between Bose-Einstein and BCS condensations; Euclidean wormholes with topology S 1 x S 2 x R; vacuum decay and symmetry breaking by radiative corrections; inflationary solutions to the cosmological horizon and flatness problems; and magnetically charged black holes

  17. Computing in high energy physics

    International Nuclear Information System (INIS)

    Smith, Sarah; Devenish, Robin

    1989-01-01

    Computing in high energy physics has changed over the years from being something one did on a slide-rule, through early computers, then a necessary evil to the position today where computers permeate all aspects of the subject from control of the apparatus to theoretical lattice gauge calculations. The state of the art, as well as new trends and hopes, were reflected in this year's 'Computing In High Energy Physics' conference held in the dreamy setting of Oxford's spires. The conference aimed to give a comprehensive overview, entailing a heavy schedule of 35 plenary talks plus 48 contributed papers in two afternoons of parallel sessions. In addition to high energy physics computing, a number of papers were given by experts in computing science, in line with the conference's aim – 'to bring together high energy physicists and computer scientists'

  18. Analyses of relativistic optical potential for medium energy proton

    International Nuclear Information System (INIS)

    Feng Dachun; Liu Wenqin; Ma Zhongyu

    1993-01-01

    The influence of the parameters of the relativistic optical potential on the nucleon scattering properties, such as cross sections, angular distributions and spin observables etc., is studied based on a set of global Dirac phenomenological optical potentials. It is show that, in contrast with the case at low energies, the total scattering cross sections vary slowly as the energy and weakly depend on the potentials at E p <200 MeV. The differential cross sections and spin observables depend not only on the volume integrals of the optical potentials, but also on their strengths and shapes. The applicability of the relativistic microscopic optical potential based on Walecka model in the medium energy region is also discussed

  19. High Energy Physics Departments - Overview

    International Nuclear Information System (INIS)

    Bartke, J.

    1999-01-01

    Following the tradition, the activities of the seven new units created in 1997 on the basis of the former Department of High Energy Physics are presented under a common header, they are: Department of Particle Theory (Dept 5); Department of Leptonic Interactions (Dept 11); Department of Hadron Structure (Dept 12); Department of High Energy Nuclear Interactions (Dept 13); The ALICE Experiment Laboratory (NAL); The ATLAS Experiment Laboratory (NAT); High Energy Physics Detector Construction Group (PBD). The research covers a variety of problems of the experimental and theoretical high energy particle physics: the hadronic and leptonic interactions with nucleons and nuclei (characteristics of particle production, including heavy quark physics), e + e - interactions and tests of the Standard Model (also radiative corrections), ultrarelativistic heavy ion interactions and search for the quark-gluon plasma, as well as the spectra, composition and interactions of high energy cosmic ray particles. Research on detectors and accelerator components as well as the development of the apparatus for the high energy physics experiments at future accelerators: LHC (CERN, Geneva), RHIC (Brookhaven), B-Factory (KEK, Tsukuba) and TESLA (DESY) is also presented. The technology of new materials with unique properties such as carbon-carbon composites is also worked on from the point of view of their application in high energy physics experiments. The Division is located in a separate building on the campus of the University of Mining and Metallurgy (UMM). This location, close to the Jagiellonian University (JU), facilitates the collaboration with the latter and with the UMM. The joint weekly seminars carried out for nearly 40 years prove this long term tradition. A substantial part of the activities is teaching and training students from the academic community in Cracow. Joint research, teaching and academic training in the high energy physics are carried out within the M. Miesowicz

  20. Heavy ion physics around the Fermi energy

    International Nuclear Information System (INIS)

    Ngo, C.

    1985-10-01

    Some aspects of heavy-ion physics between approximately 20-50 MeV/u are reviewed on two examples. First, one describes the present situation concerning the amount of linear momentum that a projectile can transfer to a fused system. One shows that this amount depends on the bombarding energy and on the mass of the projectile. The limit of incomplete fusion is discussed in terms of the maximum energy content of a nuclear system. Second, one describes some new results obtained with Kr projectiles on medium and heavy targets where one observes strongly inelastic events. These products are interpreted qualitatively in terms of a participants-spectators picture modified by the mean field interaction. The difference between Kr and lighter projectiles induced reactions is interpreted in terms of the Coulomb interaction as it is also the case at low bombarding energies

  1. [Research in high energy physics

    International Nuclear Information System (INIS)

    LoSecco, J.

    1989-01-01

    We review the efforts of the Notre Dame non accelerator high energy physics group. Our major effort has been directed toward the IMB deep underground detector. Since the departure of the Michigan group our responsibilities to the group have grown. We are also very active in pursuing physics with the IMB 3 detector. Currently we are studying proton decay, point neutrino sources and neutrino oscillations with the contained event sample

  2. Theoretical interpretation of medium energy nucleon nucleus inelastic scattering

    International Nuclear Information System (INIS)

    Lagrange, Christian

    1970-06-01

    A theoretical study is made of the medium energy nucleon-nucleus inelastic scattering (direct interaction), by applying the distorted wave Born approximation such as can be deduced from the paired equation method. It is applied to the interpretation of the inelastic scattering of 12 MeV protons by 63 Cu; this leads us to make use of different sets of wave functions to describe the various states of the target nucleus. We analyze the nature of these states and the shape of the nucleon-nucleus interaction potential, and we compare the results with those obtained from other theoretical and experimental work. (author) [fr

  3. Mexican High Energy Physics Network

    Science.gov (United States)

    D'Olivo, J. C.; Napsuciale, M.; Pérez-Angón, M. A.

    2016-10-01

    The Mexican High Energy Physics Network is one of CONACYT's thematic research networks, created with the aim of increasing the communication and cooperation of the scientific and technology communities of Mexico in strategic areas. In this report we review the evolution, challenges, achievements and opportunities faced by the network.

  4. Computing in High Energy Physics

    Science.gov (United States)

    Fisk, Ian M.

    In this review, the computing challenges facing the current and next generation of high energy physics experiments will be discussed. High energy physics computing represents an interesting infrastructure challenge as the use of large-scale commodity computing clusters has increased. The causes and ramifications of these infrastructure challenges will be outlined. Increasing requirements, limited physical infrastructure at computing facilities, and limited budgets have driven many experiments to deploy distributed computing solutions to meet the growing computing needs for analysis reconstruction, and simulation. The current generation of experiments have developed and integrated a number of solutions to facilitate distributed computing. The current work of the running experiments gives an insight into the challenges that will be faced by the next generation of experiments and the infrastructure that will be needed.

  5. High-energy atomic physics

    CERN Document Server

    Drukarev, Evgeny G

    2016-01-01

    This self-contained text introduces readers to the field of high-energy atomic physics - a new regime of photon-atom interactions in which the photon energies significantly exceed the atomic or molecular binding energies, and which opened up with the recent advent of new synchrotron sources. From a theoretical point of view, a small-parameter characteristic of the bound system emerged, making it possible to perform analytic perturbative calculations that can in turn serve as benchmarks for more powerful numerical computations. The first part of the book introduces readers to the foundations of this new regime and its theoretical treatment. In particular, the validity of the small-parameter perturbation expansion and of the lowest-order approximation is critically reviewed. The following chapters then apply these insights to various atomic processes, such as photoionization as a many-body problem, dominant mechanisms for the production of ions at higher energies, Compton scattering and ionization accompanied b...

  6. High Energy Physics Departments - Overview

    International Nuclear Information System (INIS)

    Bartke, J.

    2000-01-01

    Full text: Following our long-time tradition we will present under a common header the activities of the seven new units created in 1997 on the basis of the former Department of High Energy Physics: Department of Particle Theory (Dept. V); Department of Leptonic Interactions (Dept XI); Department of Hadron Structure (Dept XII); Department of High Energy Nuclear Interactions (Dept XIII); The ALICE Experiment Laboratory (NAL); The ATLAS Experiment Laboratory (NAT); High Energy Physics Detector Construction Group (PBD). At the end we will list our common activities: lectures and courses as well as seminars. Our research covers a variety of problems of the experimental and theoretical high energy particle physics: the hadronic and leptonic interactions with nucleons and nuclei (characteristics of particle production, including heavy quark physics), e + e - interactions and tests of the Standard Model (also evaluation of radiative corrections), ultrarelativistic heavy ion interactions and search for the quark-gluon plasma, as well as the spectra, composition and interactions of high energy cosmic ray particles. Research on detectors and accelerator components as well as the development of the apparatus for the high energy physics experiments at future accelerators: LHC (CERN, Geneva), RHIC (Brookhaven), B-Factory (KEK, Tsukuba) and TESLA (DESY, Hamburg) is also carried out. The technology of new materials with unique properties such as carbon-carbon composites is also worked on from the point of view of their application in high energy physics experiments. The Division is located in a separate building on the campus of the University of Mining and Metallurgy. This location, close to the Jagiellonian University, facilitates the collaboration with the latter and with the University of Mining and Metallurgy. The joint weekly seminars carried out for nearly 40 years prove this long term tradition. A substantial part of our activities is teaching and training students from

  7. Calculating alpha Eigenvalues in a Continuous-Energy Infinite Medium with Monte Carlo

    Energy Technology Data Exchange (ETDEWEB)

    Betzler, Benjamin R. [Los Alamos National Laboratory; Kiedrowski, Brian C. [Los Alamos National Laboratory; Brown, Forrest B. [Los Alamos National Laboratory; Martin, William R. [Los Alamos National Laboratory

    2012-09-04

    The {alpha} eigenvalue has implications for time-dependent problems where the system is sub- or supercritical. We present methods and results from calculating the {alpha}-eigenvalue spectrum for a continuous-energy infinite medium with a simplified Monte Carlo transport code. We formulate the {alpha}-eigenvalue problem, detail the Monte Carlo code physics, and provide verification and results. We have a method for calculating the {alpha}-eigenvalue spectrum in a continuous-energy infinite-medium. The continuous-time Markov process described by the transition rate matrix provides a way of obtaining the {alpha}-eigenvalue spectrum and kinetic modes. These are useful for the approximation of the time dependence of the system.

  8. A high energy physics perspective

    Energy Technology Data Exchange (ETDEWEB)

    Marciano, W.J.

    1997-01-13

    The status of the Standard model and role of symmetry in its development are reviewed. Some outstanding problems are surveyed and possible solutions in the form of additional {open_quotes}Hidden Symmetries {close_quotes} are discussed. Experimental approaches to uncover {open_quotes}New Physics{close_quotes} associated with those symmetries are described with emphasis on high energy colliders. An outlook for the future is given.

  9. High Energy Physics in Europe

    International Nuclear Information System (INIS)

    Anon.

    1980-01-01

    A thorough survey of the present and possible future activities and resources in high energy physics in the CERN Member States has been carried out by a Working Group of ECFA (European Committee for Future Accelerators) under the Chairmanship of John Mulvey. The aim has been to obtain a view of the present European scene and to see whether it looks well adapted to the effective exploitation of possible future machines in Europe (particular LEP) and the rest of the world

  10. Central Arkansas Energy Project. Coal to medium-Btu gas

    Science.gov (United States)

    1982-05-01

    The Central Arkansas Energy Project has as its objective the conversion of coal in a central location to a more readily usable energy source, medium Btu gas (MBG), for use at dispersed locations as fuel for power production and steam generation, or as a feedstock for chemical processing. The project elements consist of a gasification facility to produce MBG from coal, a pipeline to supply the MBG to the dispersed sites. The end of line users investigated were the repowering or refueling of an existing Arkansas Power and Light Co. Generating station, an ammonia plant, and a combined cycle cogeneration facility for the production of steam and electricity. Preliminary design of the gasification plant including process engineering design bases, process flow diagrams, utility requirements, system description, project engineering design, equipment specifications, plot plan and section plot plans, preliminary piping and instrument diagrams, and facilities requirements. Financial analyses and sensitivities are determined. Design and construction schedules and manpower loadings are developed. It is concluded that the project is technically feasible, but the financial soundness is difficult to project due to uncertainty in energy markets of competing fuels.

  11. Multiple scattering in the nuclear rearrangement reactions at medium energy

    International Nuclear Information System (INIS)

    Tekou, A.

    1980-09-01

    It is shown that the multiple scattering mechanism is very important in the transfer of the large momenta involved in the nuclear rearrangement reactions at medium energy. In contrast to the usual belief, the reaction cross-section is not very sensitive to the high momenta components of the nuclear wave function. The multiple scattering mechanism is especially important in 4 He(p,d) 3 He reaction around 800 MeV. Here the collisions involving two nucleons of the target nucleus are dominant. The triple collisions contribution is also important. The four collision contribution is negligible in the forward direction and sizeable at large angles. Thus, using the K.M.T. approach in DWBA calculations, the second order term of the optical potential must be included. So, is it not well established that the second term of the K.M.T. optical potential is important for the proton elastic scattering on light nuclei. (author)

  12. High-energy astroparticle physics

    CERN Document Server

    Semikoz, A

    2010-01-01

    In these three lectures I discuss the present status of high-energy astroparticle physics including Ultra-High-Energy Cosmic Rays (UHECR), high-energy gamma rays, and neutrinos. The first lecture is devoted to ultra-high-energy cosmic rays. After a brief introduction to UHECR I discuss the acceleration of charged particles to highest energies in the astrophysical objects, their propagation in the intergalactic space, recent observational results by the Auger and HiRes experiments, anisotropies of UHECR arrival directions, and secondary gamma rays produced by UHECR. In the second lecture I review recent results on TeV gamma rays. After a short introduction to detection techniques, I discuss recent exciting results of the H.E.S.S., MAGIC, and Milagro experiments on the point-like and diffuse sources of TeV gamma rays. A special section is devoted to the detection of extragalactic magnetic fields with TeV gammaray measurements. Finally, in the third lecture I discuss Ultra-High-Energy (UHE) neutrinos. I review t...

  13. Energy and momentum deposited into a QCD medium by a jet shower.

    Science.gov (United States)

    Qin, G-Y; Majumder, A; Song, H; Heinz, U

    2009-10-09

    For a hard parton moving through a dense QCD medium, we compute self-consistently the energy loss and the fraction deposited into the medium due to showering and rescattering of the shower, assuming weak coupling between probe and medium. The same transport coefficients thus determine both the energy loss and its deposition into the medium. This allows a parameter free calculation of the latter once the former are computed or measured. We compute them for a weakly interacting medium. Assuming a short thermalization time for the deposited energy, we determine the medium's hydrodynamical response and obtain a conical pattern that is strongly enhanced by showering.

  14. Experimental High Energy Physics Research

    Energy Technology Data Exchange (ETDEWEB)

    Hohlmann, Marcus [Florida Inst. of Technology, Melbourne, FL (United States). Dept. of Physics and Space Sciences

    2016-01-13

    This final report summarizes activities of the Florida Tech High Energy Physics group supported by DOE under grant #DE-SC0008024 during the period June 2012 – March 2015. We focused on one of the main HEP research thrusts at the Energy Frontier by participating in the CMS experiment. We were exploiting the tremendous physics opportunities at the Large Hadron Collider (LHC) and prepared for physics at its planned extension, the High-Luminosity LHC. The effort comprised a physics component with analysis of data from the first LHC run and contributions to the CMS Phase-2 upgrades in the muon endcap system (EMU) for the High-Luminosity LHC. The emphasis of our hardware work was the development of large-area Gas Electron Multipliers (GEMs) for the CMS forward muon upgrade. We built a production and testing site for such detectors at Florida Tech to complement future chamber production at CERN. The first full-scale CMS GE1/1 chamber prototype ever built outside of CERN was constructed at Florida Tech in summer 2013. We conducted two beam tests with GEM prototype chambers at CERN in 2012 and at FNAL in 2013 and reported the results at conferences and in publications. Principal Investigator Hohlmann served as chair of the collaboration board of the CMS GEM collaboration and as co-coordinator of the GEM detector working group. He edited and authored sections of the detector chapter of the Technical Design Report (TDR) for the GEM muon upgrade, which was approved by the LHCC and the CERN Research Board in 2015. During the course of the TDR approval process, the GEM project was also established as an official subsystem of the muon system by the CMS muon institution board. On the physics side, graduate student Kalakhety performed a Z' search in the dimuon channel with the 2011 and 2012 CMS datasets that utilized 20.6 fb⁻¹ of p-p collisions at √s = 8 TeV. For the dimuon channel alone, the 95% CL lower limits obtained on the mass of a Z' resonance are 2770 Ge

  15. Duke University High Energy Physics

    International Nuclear Information System (INIS)

    Fortney, L.R.; Goshaw, A.T.; Walker, W.D.

    1993-03-01

    The research program of the Duke High Energy Physics Group is described in this Progress Report and a separate Proposal containing their plans for 1994. These two documents are supplemented by compilations of selected publications, thesis abstracts, and the curriculum vitae of the eleven Ph.D. physicists who are carrying out this research program. This Progress Report contains a review of the research which has been done over the first half (1992 and 1993 to date) of the current three-year DOE grant, plus some earlier research to establish a broader perspective of the research interests. High energy physics research at Duke has three components. The first, Task A, is based upon experiments carried out at Fermilab's Tevatron Collider. The group is finishing the analysis of data from their first collider experiment (E735), a study of inclusive particle production from bar p p collisions at √ bar s = 1.8 TeV. The second component of the research, Task B, deals primarily with heavy flavor physics. The third part of the research program, Task D, deals with preparation for research at the SSC. The authors have been active in the development of tracking detectors for the SSC since 1989, and are now concentrating on the design and construction of straw tube drift chambers for the solenoid detector

  16. Spinoff from high energy physics

    International Nuclear Information System (INIS)

    Hoffmann, Hans

    1994-01-01

    This year the CERN Courier is featuring the spinoff and technological benefits arising from research in fundamental physics. After initial illustrations in applied data processing sectors, this article by Hans Hoffman of CERN examines the rationale and underlying objectives of the 'new awareness' of the market value of basic science. He is the Chairman of a new panel on the subject set up recently by the International Committee for Future Accelerators (ICFA). The other members are: Oscar Barbalat of CERN, Hans Christian Dehne of DESY, Sin-ichi Kurakawa of KEK, Gennady Kulipanov of the Budker Institute (Novosibirsk), Anthony Montgomery, formerly of the SSC, A. H. Walenta of Siegen, Germany, and Zhongqiang Yu of IHEP Beijing. High energy physics - the quest to find and understand the structure of matter - is mainly seen as an essential part of human culture. However this basic science increasingly has to jostle for funding attention with other branches of science. Applied sciences aim for a rapid transformation of investment cash into viable market products. In times of economic difficulties this is attractive to funding agencies and governments, and economic usefulness and technological relevance also become criteria for a basic science like high energy physics.

  17. Physics and Chemistry of the Interstellar Medium. General Colloquium, 19-21 November 2012, Paris

    International Nuclear Information System (INIS)

    Aguillon, Francois; Alata, Ivan; Alcaraz, Christian; Alves, Marta; Andre, Philippe; Bachiller, Rafael; Bacmann, Aurore; Baklouti, Donia; Bernard, Jean-Philippe; Berne, Olivier; Beroff, Karine; Bertin, Mathieu; Biennier, Ludovic; Bocchio, Marco; Bonal, Lydie; Bontemps, Sylvain; Bouchez Giret, Aurelia; Boulanger, Francois; Bracco, Andrea; Bron, Emeric; Brunetto, Rosario; Cabrit, Sylvie; Canosa, Andre; Capron, Michael; Ceccarelli, Cecilia; Cernicharo, Jose; Chaabouni, Henda; Chabot, Marin; Chen, Hui-Chen; Chiavassa, Thierry; Cobut, Vincent; Commercon, Benoit; Congiu, Emanuele; Coutens, Audrey; Danger, Gregoire; Daniel, Fabien; Dartois, Emmanuel; Demyk, Karine; Denis, Alpizar; Despois, Didier; D'hendecourt, Louis; Dontot, Leo; Doronin, Mikhail; Dubernet, Marie-Lise; Dulieu, Francois; Dumouchel, Fabien; Duvernay, Fabrice; Ellinger, Yves; Falgarone, Edith; Falvo, Cyril; Faure, Alexandre; Fayolle, Edith; Feautrier, Nicole; Feraud, Geraldine; Fillion, Jean-Hugues; Gamboa, Antonio; Gardez, Aline; Gavilan, Lisseth; Gerin, Maryvonne; Ghesquiere, Pierre; Godard, Benjamin; Godard, Marie; Gounelle, Matthieu; Gratier, Pierre; Grenier, Isabelle; Gruet, Sebastien; Gry, Cecile; Guillemin, Jean-Claude; Guilloteau, Stephane; Gusdorf, Antoine; Guzman, Viviana; Habart, Emilie; Hennebelle, Patrick; Herrera, Cinthya; Hily-Blant, Pierre; Hincelin, Ugo; Hochlaf, Majdi; Huet, Therese; Iftner, Christophe; Jallat, Aurelie; Joblin, Christine; Kahane, Claudine; Kalugina, Yulia; Kleiner, Isabelle; Koehler, Melanie; Kokkin, Damian; Koutroumpa, Dimitra; Krim, Lahouari; Lallement, Rosine; Lanza, Mathieu; Lattelais, Marie; Le Bertre, Thibaut; Le Gal, Romane; Le Petit, Franck; Le Picard, Sebastien; Lefloch, Bertrand; Lemaire, Jean Louis; Lesaffre, Pierre; Lique, Francois; Loison, Jean-Christophe; Lopez Sepulcre, Ana; Maillard, Jean-Pierre; Margules, Laurent; Martin, Celine; Mascetti, Joelle; Michaut, Xavier; Minissale, Marco; Miville-Deschenes, Marc-Antoine; Mokrane, Hakima; Momferratos, Georgios; Montillaud, Julien; Montmerle, Thierry; Moret-Bailly, Jacques; Motiyenko, Roman; Moudens, Audrey; Noble, Jennifer; Padovani, Marco; Pagani, Laurent; Pardanaud, Cedric; Parisel, Olivier; Pauzat, Francoise; Pernet, Amelie; Pety, Jerome; Philippe, Laurent; Piergiorgio, Casavecchia; Pilme, Julien; Pinto, Cecilia; Pirali, Olivier; Pirim, Claire; Puspitarini, Lucky; Rist, Claire; Ristorcelli, Isabelle; Romanzin, Claire; Roueff, Evelyne; Rousseau, Patrick; Sabbah, Hassan; Saury, Eleonore; Schneider, Ioan; Schwell, Martin; Sims, Ian; Spielfiedel, Annie; Stoecklin, Thierry; Talbi, Dahbia; Taquet, Vianney; Teillet-Billy, Dominique; Theule, Patrice; Thi, Wing-Fai; Trolez, Yann; Valdivia, Valeska; Van Dishoeck, Ewine; Verstraete, Laurent; Vinogradoff, Vassilissa; Wiesenfeld, Laurent; Ysard, Nathalie; Yvart, Walter; Zicler Eleonore

    2012-11-01

    This document publishes the oral contributions and the 66 posters presented during a colloquium on physics and chemistry of interstellar medium. The following themes have been addressed: New views on the interstellar medium with Herschel, Planck and Alma, Cycle of interstellar dusts, Physics and Dynamics of the interstellar medium, Molecular complexifying and the link towards pre-biotic chemistry. More precisely, the oral contributions addressed the following topics: Interstellar medium with Herschel and Planck; The anomalous microwave emission: a new window on the physics of small grains; Sub-millimetre spectroscopy of complex molecules and of radicals for ALMA and Herschel missions; Analysing observations of molecules in the ISM: theoretical and experimental studies of energy transfer; Unravelling the labyrinth of star formation with Herschel; Star formation regions with Herschel and Alma: astro-chemistry in the Netherlands; Physical structure of gas and dust in photo-dissociation regions observed with Herschel; Photo-desorption of analogues of interstellar ices; Formation of structures in the interstellar medium: theoretical and numerical aspects; Towards a 3D mapping of the galactic ISM by inversion of absorption individual measurements; Low velocity shocks as signatures of turbulent dissipation in diffuse irradiated gas; Early phases of solar system formation: 3D physical and chemical modelling of the collapse of pre-stellar dense core; Cosmic-ray propagation in molecular clouds; Protostellar shocks in the time of Herschel; A new PDR model of the physics and chemistry of the interstellar gas; Molecular spectroscopy in the ALMA era and laboratory Astrophysics in Spain; Which molecules to be searched for in the interstellar medium; Physics and chemistry of UV illuminated neutral gas: the Horsehead case; Nitrogen fractionation in dark clouds; Molecular spectral surveys from millimetre range to far infrared; Mechanisms and synthesis at the surface of cold grains

  18. Monte Carlo study of medium-energy electron penetration in aluminium and silver

    Directory of Open Access Journals (Sweden)

    Aydın Asuman

    2015-06-01

    Full Text Available Monte Carlo simulations are very useful for many physical processes. The transport of particles was simulated by Monte Carlo calculating the basic parameters such as probabilities of transmitted–reflected and angular-energy distributions after interaction with matter. Monte Carlo simulations of electron scattering based on the single scattering model were presented in the medium-energy region for aluminium and silver matters. Two basic equations are required the elastic scattering cross section and the energy loss. The Rutherford equation for the different screening parameters is investigated. This scattering model is accurate in the energy range from a few keV up to about 0.50 MeV. The reliability of the simulation method is analysed by comparing experimental data from transmission measurements.

  19. Medium energy measurements of n-n parameters: Progress in research, January 1, 1986-December 31, 1986

    International Nuclear Information System (INIS)

    Riley, P.J.

    1987-01-01

    A major part of the work has been and will continue to be associated with research done at the Nucleon Physics Laboratory (NPL) at the Los Alamos Meson Physics Facility (LAMPF). The aim of the experimental program is the determination of the nucleon-nucleon amplitudes at medium energy. The required data include both elastic and inelastic experiments, and in addition the measurement of polarization and polarization transfer parameters. We have been emphasizing single pion production measurements using polarized proton beams, and expect that our present data base will provide stringent tests of theoretical models. With the development of the LAMPF high intensity polarized proton source, we expect that a reasonably intense beam of medium energy polarized neutrons will become available, and are planning a series of experiments utilizing polarized neutrons to determine the importance of the I = 0 reaction amplitudes at medium energies

  20. Radiation protection and dosimetry problems around medium energy accelerators

    International Nuclear Information System (INIS)

    Pavlovic, R.; Pavlovic, S.; Markovic, S.; Boreli, F.

    1995-01-01

    In the Institute of Nuclear Sciences 'VINCA', the Accelerator Installation 'TESLA', which is an ion accelerator facility consisting of an isochronous cyclotron 'VINCY', a heavy ion source, a D - / H - ion source, three low energy and five high energy experimental channels is now under construction. The Tesla Accelerator Installation should by the principal facility for basic and applied research in physics, chemistry, biology, and material science, as well as for production of radioisotopes, medical diagnostics and therapy with radioisotopes and accelerated particle beams. Some problems in defining radiation protection and safety programme, particularly problems in construction appropriate shielding barriers at the Accelerator Installation 'TESLA' are discussed in this paper. (author) 1 fig., 9 refs

  1. Compressed Air Energy Storage – An Option for Medium to Large Scale Electrical-energy Storage

    OpenAIRE

    Budt, Marcus; Wolf, Daniel; Span, Roland; Yan, Jinyue

    2016-01-01

    This contribution presents the theoretical background of compressed air energy storage, examples for large scale application of this technology, chances and obstacles for its future development, and areas of research aiming at the development of commercially viable plants in the medium to large scale range.

  2. High energy physics and cosmology

    International Nuclear Information System (INIS)

    Silk, J.I.

    1991-01-01

    This research will focus on the implications of recent theories and experiments in high energy physics of the evolution of the early universe, and on the constraints that cosmological considerations can place on such theories. Several problems are under investigation, including studies of the nature of dark matter and the signature of annihilations in the galactic halo, where the resulting γ-ray fluxes are potentially observable, and in stars, where stellar evolution may be affects. We will develop constraints on the inflationary predictions of scale-free primordial fluctuations in a universe at critical closure density by studying their linear and non-linear evolution after they re-enter the particle horizon, examining the observable imprint of primordial density fluctuations on the cosmic microwave background radiation in both flat and curved cosmological models, and implications for observations of large-scale galaxy clustering and structure formation theories. We will also study spectral distortions in the microwave background radiation that are produced by exotic particle decays in the very early universe. We expect such astrophysical considerations to provide fruitful insights both into high-energy particle physics and into possible cosmological for the early universe

  3. Duke University high energy physics

    Energy Technology Data Exchange (ETDEWEB)

    Fortney, L.R.; Goshaw, A.T.; Walker, W.D.

    1992-07-01

    This Progress Report presents a review of the research done in 1992 by the Duke High Energy Physics Group. This is the first year of a three-year grant which was approved by the Office of High Energy Physics at DOE after an external review of our research program during the summer of 1991. Our research is centered at Fermilab where we are involved with two active experiments, one using the Tevatron collider (CDF, the Collider Detector Facility) and the other using a proton beam in the high intensity laboratory (E771, study of beauty production). In addition to these running experiments we are continuing the analysis of data from experiments E735 (collider search for a quark-gluon plasma), E705 (fixed target study of direct photon and {sub {Chi}} meson production) and E597 (particle production from hadron-nucleus collisions). Finally, this year has seen an expansion of our involvement with the design of the central tracking detector for the Solenoidal Detector Collaboration (SDC) and an increased role in the governance of the collaboration. Descriptions of these research activities are presented in this report.

  4. Duke University high energy physics

    International Nuclear Information System (INIS)

    Fortney, L.R.; Goshaw, A.T.; Walker, W.D.

    1992-07-01

    This Progress Report presents a review of the research done in 1992 by the Duke High Energy Physics Group. This is the first year of a three-year grant which was approved by the Office of High Energy Physics at DOE after an external review of our research program during the summer of 1991. Our research is centered at Fermilab where we are involved with two active experiments, one using the Tevatron collider (CDF, the Collider Detector Facility) and the other using a proton beam in the high intensity laboratory (E771, study of beauty production). In addition to these running experiments we are continuing the analysis of data from experiments E735 (collider search for a quark-gluon plasma), E705 (fixed target study of direct photon and Χ meson production) and E597 (particle production from hadron-nucleus collisions). Finally, this year has seen an expansion of our involvement with the design of the central tracking detector for the Solenoidal Detector Collaboration (SDC) and an increased role in the governance of the collaboration. Descriptions of these research activities are presented in this report

  5. High energy physics and grid computing

    International Nuclear Information System (INIS)

    Yu Chuansong

    2004-01-01

    The status of the new generation computing environment of the high energy physics experiments is introduced briefly in this paper. The development of the high energy physics experiments and the new computing requirements by the experiments are presented. The blueprint of the new generation computing environment of the LHC experiments, the history of the Grid computing, the R and D status of the high energy physics grid computing technology, the network bandwidth needed by the high energy physics grid and its development are described. The grid computing research in Chinese high energy physics community is introduced at last. (authors)

  6. Experiments in intermediate energy physics

    Energy Technology Data Exchange (ETDEWEB)

    Dehnhard, D.

    2003-02-28

    Research in experimental nuclear physics was done from 1979 to 2002 primarily at intermediate energy facilities that provide pion, proton, and kaon beams. Particularly successful has been the work at the Los Alamos Meson Physics Facility (LAMPF) on unraveling the neutron and proton contributions to nuclear ground state and transition densities. This work was done on a wide variety of nuclei and with great detail on the carbon, oxygen, and helium isotopes. Some of the investigations involved the use of polarized targets which allowed the extraction of information on the spin-dependent part of the triangle-nucleon interaction. At the Indiana University Cyclotron Facility (IUCF) we studied proton-induced charge exchange reactions with results of importance to astrophysics and the nuclear few-body problem. During the first few years, the analysis of heavy-ion nucleus scattering data that had been taken prior to 1979 was completed. During the last few years we created hypernuclei by use of a kaon beam at Brookhaven National Laboratory (BNL) and an electron beam at Jefferson Laboratory (JLab). The data taken at BNL for a study of the non-mesonic weak decay of the A particle in a nucleus are still under analysis by our collaborators. The work at JLab resulted in the best resolution hypernuclear spectra measured thus far with magnetic spectrometers.

  7. High energy physics at UCR

    International Nuclear Information System (INIS)

    Kernan, A.; Shen, B.C.

    1997-01-01

    The hadron collider group is studying proton-antiproton interactions at the world's highest collision energy 2 TeV. Data-taking with the D0 detector is in progress at Fermilab and the authors have begun the search for the top quark. S. Wimpenny is coordinating the effort to detect t bar t decaying to two leptons, the most readily identifiable channel. At UC Riverside design and testing for a silicon tracker for the D0 upgrade is in progress; a parallel development for the SDC detector at SSC is also underway. The major group effort of the lepton group has been devoted to the OPAL experiment at LEP. They will continue to focus on data-taking to improve the quality and quantity of their data sample. A large number of papers have been published based on approximately 500,000 events taken so far. The authors will concentrate on physics analysis which provides stringent tests of the Standard Model. The authors are continuing participation in the RD5 experiment at the SPS to study muon triggering and tracking. The results of this experiment will provide critical input for the design of the Compact Muon Solenoid experiment being proposed for the LHC. The theory group has been working on problems concerning the possible vilation of e-μ-τ universality, effective Lagrangians, neutrino physics, as well as quark and lepton mass matrices

  8. High energy physics at UCR

    Energy Technology Data Exchange (ETDEWEB)

    Kernan, A.; Shen, B.C.

    1997-07-01

    The hadron collider group is studying proton-antiproton interactions at the world`s highest collision energy 2 TeV. Data-taking with the D0 detector is in progress at Fermilab and the authors have begun the search for the top quark. S. Wimpenny is coordinating the effort to detect t{bar t} decaying to two leptons, the most readily identifiable channel. At UC Riverside design and testing for a silicon tracker for the D0 upgrade is in progress; a parallel development for the SDC detector at SSC is also underway. The major group effort of the lepton group has been devoted to the OPAL experiment at LEP. They will continue to focus on data-taking to improve the quality and quantity of their data sample. A large number of papers have been published based on approximately 500,000 events taken so far. The authors will concentrate on physics analysis which provides stringent tests of the Standard Model. The authors are continuing participation in the RD5 experiment at the SPS to study muon triggering and tracking. The results of this experiment will provide critical input for the design of the Compact Muon Solenoid experiment being proposed for the LHC. The theory group has been working on problems concerning the possible vilation of e-{mu}-{tau} universality, effective Lagrangians, neutrino physics, as well as quark and lepton mass matrices.

  9. Split School of High Energy Physics 2015

    CERN Document Server

    2015-01-01

    Split School of High Energy Physics 2015 (SSHEP 2015) was held at the Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture (FESB), University of Split, from September 14 to September 18, 2015. SSHEP 2015 aimed at master and PhD students who were interested in topics pertaining to High Energy Physics. SSHEP 2015 is the sixth edition of the High Energy Physics School. Previous five editions were held at the Department of Physics, University of Sarajevo, Bosnia and Herzegovina.

  10. Sampling calorimeters in high energy physics

    International Nuclear Information System (INIS)

    Gordon, H.A.; Smith, S.D.

    1981-01-01

    At our current understanding of elementary particle physics, the fundamental constituents are the photon, quarks, gluons and leptons with a few highly forecasted heavy bosons. Calorimeters are essential for detecting all of these particles. Quarks and gluons fragment into many particles - at high energies, so many particles that one may not want to measure each one separately. This group of both charged and neutral particles can only be measured by calorimeters. The energy of an electron needs to be measured by a calorimeter and muon identification is enhanced by the recognition of a minimum ionizing particle passing through the calorimeter. Sampling calorimeters - those instruments in which part of the shower is sampled in an active medium sandwiched between absorbing layers - are reviewed. What follows is a very cursory overview of some fundamental aspects of sampling calorimeters. First, the properties of shower development are described for both the electromagnetic and hadronic cases. Then, examples of various readout schemes are discussed. Finally, some currently promising new ideas in calorimetry are described. 21 references

  11. ρ-meson self-energy and dielectron emissivity in an isospin-asymmetric pion medium

    International Nuclear Information System (INIS)

    Titov, A.I.; Gulamov, T.I.; Kaempfer, B.

    1996-01-01

    The ρ-meson self-energy in an isospin-asymmetric pion gas at finite temperature and charged-pion chemical potential is evaluated. We utilize a conventional effective π-ρ Lagrangian and the functional integral representation of the partition function in the second order in the ρππ coupling constant. We analyze the ρ-meson polarization operator and its dependence on the invariant mass M and spatial momentum parallel p parallel of the ρ meson. The pole positions and the values of the imaginary parts of the self-energy for different polarization states have different functional dependences on M and parallel p parallel. The corresponding dielectron rate (calculated from the imaginary part of the in-medium ρ-meson propagator) shows a distinctive asymmetry when the momentum t=p + -p - is perpendicular or parallel to p, where p ± are the e ± momenta of the electron pair. copyright 1996 The American Physical Society

  12. Energy Blocks--A Physical Model for Teaching Energy Concepts

    Science.gov (United States)

    Hertting, Scott

    2016-01-01

    Most physics educators would agree that energy is a very useful, albeit abstract topic. It is therefore important to use various methods to help the student internalize the concept of energy itself and its related ideas. These methods include using representations such as energy bar graphs, energy pie charts, or energy tracking diagrams.…

  13. Directions in high energy physics

    International Nuclear Information System (INIS)

    DiLella, L.; Altarelli, G.

    1988-01-01

    This volume reviews the physics studied at the CERN proton-antiproton collider during its first phase of operation, from the first physics run in 1981 to the last one at the end of 1985. The volume consists of a series of review articles written by physicists who are actively involved with the collider research program. Contents: The CERN Proton-Antiproton Collider; Elastic Scattering and Total Cross-Section; Properties of Soft Proton-Antiproton Collisions; Physics of Hadronic Jets; Physics of the Intermediate Vector Bosons; Heavy Flavour Production; Searches for New Physics; Physics with ACOL; Physics at Supercolliders

  14. Fundamental physics with low-energy neutrons

    International Nuclear Information System (INIS)

    Barrón-Palos, Libertad

    2016-01-01

    Low-energy neutrons are playing a prominent role in a growing number of fundamental physics studies. This paper provides a brief description of the physics that some of the experiments in the area are addressing. (paper)

  15. Home energy monitors : Impact over the medium-term

    NARCIS (Netherlands)

    Dam, van S.S.; Bakker, C.A.; Hal, van J.D.M. (Anke)

    2010-01-01

    Home Energy Management Systems (HEMS), e.g. energy monitors, are intermediary products that can visualize, manage, and/or monitor the energy use of other products or whole households. HEMS increasingly receive attention for their role in energy conservation in households. A literature review and a

  16. Harvard University High Energy Physics progress report

    International Nuclear Information System (INIS)

    1992-01-01

    The principal goals of this work are to carry out forefront programs in high energy physics research and to provide first rate educational opportunities for students. The experimental program supported through HEPL is carried out at the major accelerator centers in the world and addresses some of the most important questions in high energy physics. The program is based at Harvard's High Energy Physics Laboratory, which has offices, computing facilities, and engineering support, and both electronics and machine shops

  17. Section for nuclear physics and energy physics - Annual report

    International Nuclear Information System (INIS)

    1994-08-01

    This annual report summarizes the research and development activities of the Section for Nuclear Physics and Energy Physics at the University of Oslo in 1993. It includes experimental and theoretical nuclear physics, as well as other fields of physics in which members of the section have participated. The report describes completed projects nd work currently in progress. As in previous years, the experimental activities in nuclear physics have mainly been centered around the Cyclotron Laboratory with the SCANDITRONIX MC-35 Cyclotron. Using the CACTUS multidetector system, several experiments have been completed. Some results have been published while more data remains to be analyzed. In experimental nuclear physics the section staff members are engaged within three main fields: nuclei at high temperature, high spin nuclear structure and high and intermediate energy nuclear physics. In theoretical physics the group is concerned with the many-body description of nuclear properties as well as with the foundation of quantum physics

  18. Free Energy in Introductory Physics

    Science.gov (United States)

    Prentis, Jeffrey J.; Obsniuk, Michael J.

    2016-01-01

    Energy and entropy are two of the most important concepts in science. For all natural processes where a system exchanges energy with its environment, the energy of the system tends to decrease and the entropy of the system tends to increase. Free energy is the special concept that specifies how to balance the opposing tendencies to minimize energy…

  19. Medium energy measurements of N-N parameters

    International Nuclear Information System (INIS)

    Ambrose, D.; Bachman, M.; Coffey, P.; Glass, G.; Jobst, B.; McNaughton, K.H.; Nguyen, C.; Riley, P.J.

    1993-01-01

    The authors report here progress made during the three year period January 1, 1990, to December 31, 1993, for the Department of Energy Three-Year Grant No. DE-FG05-88ER40446, third year. A major part of the work has been associated with nucleon-nucleon (N-N) research carried out at the Nucleon Physics Laboratory (NPL) at the Los Alamos Meson Physics Facility (LAMPF). During this period they also completed data acquisition and analyses of a TRIUMF experiment, but they have no further plans for experimental work at TRIUMF. Other research has been and will be continued to be carried out at BNL, and involves two rare kaon decay experiments, BNL E791, now completed, and a second generation rare kaon decay experiment, E871, which has just this summer completed an engineering test run. The authors are now also members of a proposed experiment, STAR, (Solenoidal Tracker at RHIC) to be carried out at the Relativistic Heavy Ion Collider facility, RHIC, at BNL. The past three years have been a time of rapid change in the focus of the experimental program. A LAMPF experiment, E1097, in which they spent a large amount of effort during the past three years, was terminated due to funding shortages after they had fabricated the detector, but before data acquisition, and consequently they increased their participation in the rare kaon experiment at BNL, E871. It now appears that there will be no LAMPF N-N program after 1993, so that the research efforts will concentrate on the BNL rare kaon decay measurement, E871, and on STAR. The authors expect that STAR, which requires the fabrication of a large colliding beam detector facility, will use an increasing amount of their research efforts during the next few years. In what follows they describe recent progress on the LAMPF and TRIUMF N-N measurements, on the BNL rare kaon decay work, and on the initial work with the STAR group

  20. High energy physics and cloud computing

    International Nuclear Information System (INIS)

    Cheng Yaodong; Liu Baoxu; Sun Gongxing; Chen Gang

    2011-01-01

    High Energy Physics (HEP) has been a strong promoter of computing technology, for example WWW (World Wide Web) and the grid computing. In the new era of cloud computing, HEP has still a strong demand, and major international high energy physics laboratories have launched a number of projects to research on cloud computing technologies and applications. It describes the current developments in cloud computing and its applications in high energy physics. Some ongoing projects in the institutes of high energy physics, Chinese Academy of Sciences, including cloud storage, virtual computing clusters, and BESⅢ elastic cloud, are also described briefly in the paper. (authors)

  1. Energy efficiency in small and medium scale foundry industry

    Directory of Open Access Journals (Sweden)

    G. Patange

    2016-04-01

    Full Text Available In this paper, the research results of surveys which were conducted in an Indian foundry cluster which are potential members of such sectors are presented. These results indicate that there is an enough potential improvement in the energy use. The use of energy efficient practices can result in their energy use effectively as well as cost reduction. The key findings about the energy pattern are a lack of energy efficient practices. The suggested recommendations can contribute to an increase in energy efficiency in such cluster.

  2. The Energy Savings and Environmental Benefits for Small and Medium Enterprises by Cloud Energy Management System

    Directory of Open Access Journals (Sweden)

    Yen-Chieh Tseng

    2016-06-01

    Full Text Available Small and medium enterprises (SMES play an important role in Taiwan’s economy. The reduction of energy costs and carbon dioxide (CO2 emissions are critical to preserving the environment. This paper uses the experimental results from 65 sites, gathered over two years since 2012, to determine how the integration of Internet communication, cloud computing technologies and a cloud energy management service (cloud EMS can reduce energy consumption by cost-effective means. The EMS has three levels: infrastructure as a service (IaaS, platform as a service (PaaS and software as a service (SaaS. Working jointly with ChungHwa Telecom, Taiwan’s leading telecom service provider, data from detection devices, control devices, air-conditioning and lighting systems are all uploaded to a cloud EMS platform, to give a so called intelligent energy management network application service platform (IEN-ASP. Various energy saving management functions are developed using this platform: (1 air conditioning optimization; (2 lighting system optimization; (3 scheduling control; (4 power billing control and (5 occupancy detection and timing control. Using the international performance measurement and verification protocol (IPMVP, the energy used at the test sites, before and after the use of the IEN-ASP, are compared to calculate the energy saved. The experimental results show that there is an average energy saving of 5724 kWh per year, which represents a saving ratio of 5.84%. This translates to a total reduction in CO2 emissions of 9,926,829 kg per year. Using the data collected, a regression model is used to demonstrate the correlation between the power that is consumed, the energy that is saved and the area of the sites. Another interesting result is that, if the experimental sites are maintained by experienced electricians or other personnel and EMS protocols are followed, the energy saving can be as great as 6.59%.

  3. Technical Support Document: 50% Energy Savings Design Technology Packages for Medium Office Buildings

    Energy Technology Data Exchange (ETDEWEB)

    Thornton, Brian A.; Wang, Weimin; Lane, Michael D.; Rosenberg, Michael I.; Liu, Bing

    2009-09-01

    This Technical Support Document (TSD) describes the process and methodology for development of the Advanced Energy Design Guide for Medium Offices (AEDG-MO or the Guide), a design guidance document which intends to provide recommendations for achieving 50% energy savings in medium office buildings that just meet the requirements of ANSI/ASHRAE/IESNA Standard 90.1-2004, Energy Standard for Buildings Except Low-Rise Residential Buildings.

  4. Energy technologies for post Kyoto targets in the medium term

    International Nuclear Information System (INIS)

    Soenderberg Petersen, L.; Larsen, H.

    2003-09-01

    The Risoe International Energy Conference took place 19 - 21 May 2003 and the aim was to present and discuss new developments and trends in energy technologies which may become main contributors to the energy scene in 15 to 20 years. The conference addressed R and D related to the individual technologies as well as system integration. The proceedings are prepared from papers presented at the conference and received with corrections, if any, until the final deadline on 25 June 2003. (au)

  5. Energy technologies for post Kyoto targets in the medium term

    Energy Technology Data Exchange (ETDEWEB)

    Soenderberg Petersen, L.; Larsen, H. (eds.)

    2003-09-01

    The Risoe International Energy Conference took place 19 - 21 May 2003 and the aim was to present and discuss new developments and trends in energy technologies which may become main contributors to the energy scene in 15 to 20 years. The conference addressed R&D related to the individual technologies as well as system integration. The proceedings are prepared from papers presented at the conference and received with corrections, if any, until the final deadline on 25 June 2003. (au)

  6. High energy physics in the United States

    International Nuclear Information System (INIS)

    Month, M.

    1985-01-01

    The US program in high energy physics from 1985 to 1995 is reviewed. The program depends primarily upon work at the national accelerator centers, but includes a modest but diversified nonaccelerator program. Involvement of universities is described. International cooperation in high energy physics is discussed, including the European, Japanese, USSR, and the People's Republic of China's programs. Finally, new facilities needed by the US high energy physics program are discussed, with particular emphasis given to a Superconducting Super Collider for achieving ever higher energies in the 20 TeV range

  7. High energy physics in the United States

    Energy Technology Data Exchange (ETDEWEB)

    Month, M.

    1985-10-16

    The US program in high energy physics from 1985 to 1995 is reviewed. The program depends primarily upon work at the national accelerator centers, but includes a modest but diversified nonaccelerator program. Involvement of universities is described. International cooperation in high energy physics is discussed, including the European, Japanese, USSR, and the People's Republic of China's programs. Finally, new facilities needed by the US high energy physics program are discussed, with particular emphasis given to a Superconducting Super Collider for achieving ever higher energies in the 20 TeV range. (LEW)

  8. European School of High-Energy Physics

    CERN Document Server

    2007-01-01

    The European School of High-Energy Physics is intended to give young experimental and phenomenological physicists an introduction to the theoretical aspects of recent advances in elementary particle physics. These proceedings contain lecture notes on the Standard Model of electroweak interactions, Monte Carlo generators, relativistic heavy-ion physics, the flavour dynamics and CP violation in the Standard Model, cosmology, and high-energy neutrino astronomy with IceCube.

  9. High energy physics and cosmology

    International Nuclear Information System (INIS)

    Silk, J.I.; Davis, M.

    1991-01-01

    This report discusses the following topics: annihilations in the galactic halo; cosmic microwave background; stars as particle physics laboratories; large scale structure; galaxy formation; and non-topological solutions

  10. Superconducting magnets in high energy physics

    International Nuclear Information System (INIS)

    Prodell, A.G.

    1978-01-01

    The applications of superconducting magnets in high energy physics in the last ten years have made feasible developments which are vital to high energy research. These developments include high magnetic field, large volume detectors, such as bubble chambers, required for effective resolution of high energy particle trajectories, particle beam transport magnets, and superconducting focusing and bending magnets for the very high energy accelerators and storage rings needed to pursue the study of interactions between elementary particles. The acceptance of superconductivity as a proven technology in high energy physics was reinforced by the recognition that the existing large accelerators using copper-iron magnets had reached practical limits in terms of magnetic field intensity, cost, space, and energy usage, and that large-volume, high-field, copper-iron magnets were not economically feasible. Some of the superconducting magnets and associated systems being used in and being developed for high energy physics are described

  11. Section for nuclear physics and energy physics - Annual Report

    International Nuclear Information System (INIS)

    1992-04-01

    This annual report summarizes the research and development activities of the Section for Nuclear Physics and Energy Physics at the University of Oslo in 1991. It includes experimental and theoretical nuclear physics, as well as other fields of physics in which members of the section have participated. The report describes completed projects and work currently in progress. As in previous years, the experimental activities in nuclear physics have mainly been centered around the Cyclotron Laboratory with the SCANDITRONIX MC-35 Cyclotron. Using the CACTUS multidetector system, several experiments have been completed. Some results have been published while more data remains to be analyzed

  12. Section for nuclear physics and energy physics - Annual report

    International Nuclear Information System (INIS)

    1992-04-01

    This annual report summarizes the research and development activities of the Section for Nuclear Physics and Energy Physics at the University of Oslo in 1992. It includes experimental and theoretical nuclear physics, as well as other fields of physics in which members of the section have participated. The report describes completed projects and work currently in progress. As in previous years, the experimental activities in nuclear physics have mainly been centered around the Cyclotron Laboratory with the SCANDITRONIX MC-35 Cyclotron. Using the CACTUS multidetector system, several experiments have been completed. Some results have been published while more data remains to be analyzed

  13. Partial cross sections of helium satellites at medium photon energies

    Energy Technology Data Exchange (ETDEWEB)

    Wehlitz, R.; Sellin, I.A. [Univ. of Tennessee, Knoxville, TN (United States); Hemmers, O. [Univ. of Nevada, Las Vegas, NV (United States)] [and others

    1997-04-01

    Still of current interest is the important role of single ionization with excitation compared to single ionization alone. The coupling between the electrons and the incoming photon is a single-particle operator. Thus, an excitation in addition to an ionization, leading to a so-called satellite line in a photoelectron spectrum, is entirely due to electron-electron interaction and probes the electron correlation in the ground and final state. Therefore the authors have undertaken the study of the intensity of helium satellites He{sup +}nl (n = 2 - 6) relative to the main photoline (n = 1) as a function of photon energy at photon energies well above threshold up to 900 eV. From these results they could calculate the partial cross-sections of the helium satellites. In order to test the consistency of their satellite-to-1s ratios with published double-to-single photoionization ratios, the authors calculated the double-to-single photoionization ratio from their measured ratios using the theoretical energy-distribution curves of Chang and Poe and Le Rouzo and Dal Cappello which proved to be valid for photon energies below 120 eV. These calculated double-to-single ionization ratios agree fairly well with recent ion measurements. In the lower photon energy range the authors ratios agree better with the ratios of Doerner et al. while for higher photon energies the agreement is better with the values of Levin et al.

  14. Partial cross sections of helium satellites at medium photon energies

    International Nuclear Information System (INIS)

    Wehlitz, R.; Sellin, I.A.; Hemmers, O.

    1997-01-01

    Still of current interest is the important role of single ionization with excitation compared to single ionization alone. The coupling between the electrons and the incoming photon is a single-particle operator. Thus, an excitation in addition to an ionization, leading to a so-called satellite line in a photoelectron spectrum, is entirely due to electron-electron interaction and probes the electron correlation in the ground and final state. Therefore the authors have undertaken the study of the intensity of helium satellites He + nl (n = 2 - 6) relative to the main photoline (n = 1) as a function of photon energy at photon energies well above threshold up to 900 eV. From these results they could calculate the partial cross-sections of the helium satellites. In order to test the consistency of their satellite-to-1s ratios with published double-to-single photoionization ratios, the authors calculated the double-to-single photoionization ratio from their measured ratios using the theoretical energy-distribution curves of Chang and Poe and Le Rouzo and Dal Cappello which proved to be valid for photon energies below 120 eV. These calculated double-to-single ionization ratios agree fairly well with recent ion measurements. In the lower photon energy range the authors ratios agree better with the ratios of Doerner et al. while for higher photon energies the agreement is better with the values of Levin et al

  15. Gamma-ray astronomy in the medium energy (10-50 MeV) range

    International Nuclear Information System (INIS)

    Kniffen, D.A.; Bertsch, D.L.; Palmeira, R.A.R.; Rao, K.R.

    1977-01-01

    Gamma-ray astronomy in the medium energy (10-50 MeV) range can provide unique information with which to study many astrophysical problems. Observations in the 10-50 MeV range provide the cleanest window with which to view the isotropic diffuse component of the radiation and to study the possible cosmological implications of the spectrum. For the study of compact sources, this is the important region between the X-ray sky and the vastly different γ-ray sky seen by SAS-2 and COS-B. To understand the implications of medium energy γ-ray astronomy to the study of the galactic diffuse γ-radiation, the model developed to explain the high energy γ-ray observations of SAS-2 is extended to the medium energy range. This work illustrates the importance of medium energy γ-ray astronomy for studying the electromagnetic component of the galactic cosmic rays. To observe the medium energy component of the intense galactic center γ-ray emission, two balloon flights of a medium energy γ-ray spark chamber telescope were flown in Brazil in 1975. These results indicate the emission is higher than previously thought and above the predictions of the theoretical model

  16. Solar Energy Education. Renewable energy activities for chemistry and physics

    Energy Technology Data Exchange (ETDEWEB)

    1985-01-01

    Information on renewable energy sources is provided for students in this teachers' guide. With the chemistry and physics student in mind, solar energy topics such as absorber plate coatings for solar collectors and energy collection and storage methods are studied. (BCS)

  17. Experimental and theoretical high energy physics research

    International Nuclear Information System (INIS)

    1992-01-01

    Progress in the various components of the UCLA High-Energy Physics Research program is summarized, including some representative figures and lists of resulting presentations and published papers. Principal efforts were directed at the following: (I) UCLA hadronization model, PEP4/9 e + e - analysis, bar P decay; (II) ICARUS and astroparticle physics (physics goals, technical progress on electronics, data acquisition, and detector performance, long baseline neutrino beam from CERN to the Gran Sasso and ICARUS, future ICARUS program, and WIMP experiment with xenon), B physics with hadron beams and colliders, high-energy collider physics, and the φ factory project; (III) theoretical high-energy physics; (IV) H dibaryon search, search for K L 0 → π 0 γγ and π 0 ν bar ν, and detector design and construction for the FNAL-KTeV project; (V) UCLA participation in the experiment CDF at Fermilab; and (VI) VLPC/scintillating fiber R ampersand D

  18. Refinement of the AdEPT Medium-Energy Gamma-Ray Science

    Data.gov (United States)

    National Aeronautics and Space Administration — We propose to explore the theoretical framework for the relatively unexplored field of medium energy (5--200 MeV) gamma-ray astronomy for a mission concept...

  19. Workshop on Hydrogen Storage and Generation for Medium-Power and -Energy Applications

    National Research Council Canada - National Science Library

    Matthews, Michael

    1998-01-01

    This report summarizes the Workshop on Hydrogen Storage and Generation Technologies for Medium-Power and -Energy Applications which was held on April 8-10, 1997 at the Radisson Hotel Orlando Airport in Orlando, Florida...

  20. Energy dependent response of plastic scintillation detectors to photon radiation of low to medium energy.

    Science.gov (United States)

    Ebenau, Melanie; Radeck, Désirée; Bambynek, Markus; Sommer, Holger; Flühs, Dirk; Spaan, Bernhard; Eichmann, Marion

    2016-08-01

    Plastic scintillation detectors are promising candidates for the dosimetry of low- to medium-energy photons but quantitative knowledge of their energy response is a prerequisite for their correct use. The purpose of this study was to characterize the energy dependent response of small scintillation detectors (active volume plastic scintillator BC400. Different detectors made from BC400 were calibrated at a number of radiation qualities ranging from 10 to 280 kV and at a (60)Co beam. All calibrations were performed at the Physikalisch-Technische Bundesanstalt, the National Metrology Institute of Germany. The energy response in terms of air kerma, dose to water, and dose to the scintillator was determined. Conversion factors from air kerma to dose to water and to dose to the scintillator were derived from Monte Carlo simulations. In order to quantitatively describe the energy dependence, a semiempirical model known as unimolecular quenching or Birks' formula was fitted to the data and from this the response to secondary electrons generated within the scintillator material BC400 was derived. The detector energy response in terms of air kerma differs for different scintillator sizes and different detector casings. It is therefore necessary to take attenuation within the scintillator and in the casing into account when deriving the response in terms of dose to water from a calibration in terms of air kerma. The measured energy response in terms of dose to water for BC400 cannot be reproduced by the ratio of mean mass energy-absorption coefficients for polyvinyl toluene to water but shows evidence of quenching. The quenching parameter kB in Birks' formula was determined to be kB = (12.3 ± 0.9) mg MeV(-1) cm(-2). The energy response was quantified relative to the response to (60)Co which is the common radiation quality for the calibration of therapy dosemeters. The observed energy dependence could be well explained with the assumption of ionization quenching as described

  1. Theoretical studies in medium-energy nuclear and hadronic physics

    International Nuclear Information System (INIS)

    Horowitz, C.J.; Macfarlane, M.H.; Serot, B.D.

    1991-01-01

    In the period covered by this report, work focused on five main areas: relativistic theories of nuclear structure and saturation; relativistic descriptions of proton-nucleus and electron-nucleus scattering; nonrelativistic theory of nucleon-nucleus reactions; relativistic many-body theory at finite temperature and density; and neutrino interactions in dense matter. This paper discusses this work

  2. [Electroweak and other interactions in medium-energy nuclear physics

    International Nuclear Information System (INIS)

    Mukhopadhyay, N.C.

    1993-01-01

    This report discusses the following topics: spectrum generating algebra; vibrational spectra in the heavy quarkonia; chiral soliton model; pion neutral photoproduction from proton with polarized photons in the delta-1232 region; compton scattering in the delta- 1232 region; nucleon magnetic polarizability and the role of the delta resonance; eta photo- and electroproduction; perturbative QCD; and nuclear muon capture

  3. Science Requirements and Conceptual Design for a Polarized Medium Energy Electron-Ion Collider at Jlab

    Energy Technology Data Exchange (ETDEWEB)

    Abeyratne, S; Ahmed, S; Barber, D; Bisognano, J; Bogacz, A; Castilla, A; Chevtsov, P; Corneliussen, S; Deconinck, W; Degtiarenko, P; Delayen, J; Derbenev, Ya; DeSilva, S; Douglas, D; Dudnikov, V; Ent, R; Erdelyi, B; Evtushenko, P; Fujii, Yu; Filatov, Yury; Gaskell, D; Geng, R; Guzey, V; Horn, T; Hutton, A; Hyde, C; Johnson, R; Kim, Y; Klein, F; Kondratenko, A; Kondratenko, M; Krafft, G; Li, R; Lin, F; Manikonda, S; Marhauser, F; McKeown, R; Morozov, V; Dadel-Turonski, P; Nissen, E; Ostroumov, P; Pivi, M; Pilat, F; Poelker, M; Prokudin, A; Rimmer, R; Satogata, T; Sayed, H; Spata, M; Sullivan, M; Tennant, C; Terzic, B; Tiefenback, M; Wang, M; Wang, S; Weiss, C; Yunn, B

    2012-08-01

    linac will serve as a full-energy injector, and, if needed, provide top-off refilling. The CEBAF fixed-target nuclear physics program can be simultaneously operated since the filling time of the electron ring is very short. The ion complex for MEIC consists of sources for polarized light ions and unpolarized light to heavy ions, an SRF ion linac with proton energy up to 280 MeV, a 3 GeV prebooster synchrotron, a large booster synchrotron for proton energy up to 20 GeV, and a medium-energy collider ring with energy up to 100 GeV. The ion complex can accelerate other species of ions with corresponding energies at each accelerating stage. There are three collision points planned for MEIC. Two of them are for collisions with medium-energy ions; the third is for low energy ion beams stored in a dedicated low-energy compact storage ring, as a possible follow-on project.

  4. Er+ medium energy ion implantation into lithium niobate

    Czech Academy of Sciences Publication Activity Database

    Švecová, B.; Nekvindová, P.; Macková, Anna; Oswald, Jiří; Vacík, Jiří; Grotzschel, R.; Spirkova, J.

    2009-01-01

    Roč. 267, 8-9 (2009), s. 1332-1335 ISSN 0168-583X R&D Projects: GA MŠk(CZ) LC06041; GA AV ČR IAA200480702 Institutional research plan: CEZ:AV0Z10480505; CEZ:AV0Z10100521 Keywords : lithium niobate * erbium * ion implantation Subject RIV: BG - Nuclear, Atomic and Molecular Physics, Colliders Impact factor: 1.156, year: 2009

  5. PARTICIPATION IN HIGH ENERGY PHYSICS

    Energy Technology Data Exchange (ETDEWEB)

    White, Christopher

    2012-12-20

    This grant funded experimental and theoretical activities in elementary particles physics at the Illinois Institute of Technology (IIT). The experiments in which IIT faculty collaborated included the Daya Bay Reactor Neutrino Experiment, the MINOS experiment, the Double Chooz experiment, and FNAL E871 - HyperCP experiment. Funds were used to support summer salary for faculty, salary for postdocs, and general support for graduate and undergraduate students. Funds were also used for travel expenses related to these projects and general supplies.

  6. Assessing the physical characteristics of medium density mixed housing in South Africa

    CSIR Research Space (South Africa)

    Landman, K

    2009-01-01

    Full Text Available The new housing plan in South Africa promotes the development of medium density and mixed housing developments. The nature and organisation of the physical characteristics of this type of housing has been identified as one of the key factors...

  7. Potentials of interaction between medium energy particles and nuclei

    International Nuclear Information System (INIS)

    Berezhnoj, Yu.A.; Molev, A.S.

    1986-01-01

    The potential of interaction between mean-energy particles and atomic nuclei is determined as a solution of an integral equation relating it to the scattering matrix. Potentials involving the central and spin-orbital or isospin parts are reconstructed on the basis of the scattering matrix of the diffraction model. Approximated expressions for central and spin-orbital potentials in the case of weak refraction are obtained. The effect of nuclear parameters on the shape of central potential of interaction between 156 MeV protons and the 208 Pb nuclei is considered. The calculated and phenomenological central and spin-orbital potentials of interaction between 185 MeV protons and the 90 Zr, 208 Pb nuclei are in good agreement only in the surface region of nuclei. The central and isospin potentials of interaction between the 3 He nuclei with 217 MeV energy and the 9 Be nuclei are studied

  8. Beam Profile Diagnostics for the Fermilab Medium Energy Electron Cooler

    Science.gov (United States)

    Warner, A.; Kazakevich, G.; Nagaitsev, S.; Tassotto, G.; Gai, W.; Konecny, R.

    2005-10-01

    The Fermilab Recycler ring will employ an electron cooler to store and cool 8.9 GeV antiprotons. The cooler will be based on a Pelletron electrostatic accelerator working in an energy-recovery regime. Several techniques for determining the characteristics of the beam dynamics are being investigated. Beam profiles have been measured as a function of the beam line optics at the energy of 3.5 MeV in the current range of 10/sup -4/-1 A, with a pulse duration of 2 /spl mu/s. The profiles were measured using optical transition radiation produced at the interface of a 250-/spl mu/m aluminum foil and also from YAG crystal luminescence. In addition, beam profiles measured using multiwire detectors were investigated. These three diagnostics will be used together to determine the profile dynamics of the beam. In this paper we report the results so far obtained using these techniques.

  9. The European Physical Society Conference on High Energy Physics

    Science.gov (United States)

    2017-07-01

    The European Physical Society Conference on High Energy Physics (EPS- HEP) is one of the major international conferences that review the field. It takes place every other year since 1971. It is organized by the High Energy and Particle Physics Division of the European Physical Society in cooperation with an appointed European Local Institute of Research or an internationally recognized University or Academy Body. EPS-HEP 2017 was held on 5-12 July in Venice, Italy at Palazzo del Cinema and Palazzo del Casinò, located in the Lido island. The conference has been organized by the Istituto Nazionale di Fisica Nucleare (INFN) and by the Department of Physics and Astronomy of the University of Padova. Editorial Board: Paolo Checchia, Mauro Mezzetto, Giuseppina Salente, Michele Doro, Livia Conti, Caterina Braggio, Chiara Sirignano, Andrea Dainese, Martino Margoni, Roberto Rossin, Pierpaolo Mastrolia, Patrizia Azzi, Enrico Conti, Marco Zanetti, Luca Martucci, Sofia Talas Lucano Canton.

  10. New informative techniques in high energy physics

    International Nuclear Information System (INIS)

    Klimenko, S.V.; Ukhov, V.I.

    1992-01-01

    A number of new informative techniques applied to high energy physics are considered. These are the object-oriented programming, systems integration, UIMS, visualisation, expert systems, neural networks. 100 refs

  11. Theoretical physics: Quarks fuse to release energy

    Science.gov (United States)

    Miller, Gerald A.

    2017-11-01

    In nuclear fusion, energy is produced by the rearrangement of protons and neutrons. The discovery of an analogue of this process involving particles called quarks has implications for both nuclear and particle physics. See Letter p.89

  12. Research in High Energy Physics. Final report

    Energy Technology Data Exchange (ETDEWEB)

    Conway, John S.

    2013-08-09

    This final report details the work done from January 2010 until April 2013 in the area of experimental and theoretical high energy particle physics and cosmology at the University of California, Davis.

  13. Studies In Theoretical High Energy Particle Physics

    Energy Technology Data Exchange (ETDEWEB)

    Keung, Wai Yee [Univ. of Illinois, Chicago, IL (United States)

    2017-07-01

    This is a final technical report for grant no. DE-SC0007948 describing research activities in theoretical high energy physics at University of Illinois at Chicago for the whole grant period from July 1, 2012 to March 31, 2017.

  14. [Experimental and theoretical high energy physics program

    Energy Technology Data Exchange (ETDEWEB)

    Finley, J.; Gaidos, J.A.; Loeffler, F.J.; McIlwain, R.L.; Miller, D.H.; Palfrey, T.R.; Shibata, E.I.; Shipsey, I.P.

    1993-04-01

    Experimental and theoretical high-energy physics research at Purdue is summarized in a number of reports. Subjects treated include the following: the CLEO experiment for the study of heavy flavor physics; gas microstrip detectors; particle astrophysics; affine Kac{endash}Moody algebra; nonperturbative mass bounds on scalar and fermion systems due to triviality and vacuum stability constraints; resonance neutrino oscillations; e{sup +}e{sup {minus}} collisions at CERN; {bar p}{endash}p collisions at FNAL; accelerator physics at Fermilab; development work for the SDC detector at SSC; TOPAZ; D-zero physics; physics beyond the standard model; and the Collider Detector at Fermilab. (RWR)

  15. European School of High-Energy Physics

    CERN Document Server

    2006-01-01

    The European School of High-Energy Physics is intended to give young experimental physicists an introduction to the theoretical aspects of recent advances in elementary particle physics. These proceedings contain lectures notes on field theory and the Standard Model, quantum chromodynamics, flavour physics and CP violation, experimental aspects of CP violation in K and B decays, relativistic heavy-ion physics, and the scientific programme of the Joint Institute for Nuclear Research. These core scientific topics are complemented by a lecture about the physics of ski jumping.

  16. [Experimental and theoretical high energy physics program

    International Nuclear Information System (INIS)

    Finley, J.; Gaidos, J.A.; Loeffler, F.J.; McIlwain, R.L.; Miller, D.H.; Palfrey, T.R.; Shibata, E.I.; Shipsey, I.P.

    1993-04-01

    Experimental and theoretical high-energy physics research at Purdue is summarized in a number of reports. Subjects treated include the following: the CLEO experiment for the study of heavy flavor physics; gas microstrip detectors; particle astrophysics; affine Kac endash Moody algebra; nonperturbative mass bounds on scalar and fermion systems due to triviality and vacuum stability constraints; resonance neutrino oscillations; e + e - collisions at CERN; bar p endash p collisions at FNAL; accelerator physics at Fermilab; development work for the SDC detector at SSC; TOPAZ; D-zero physics; physics beyond the standard model; and the Collider Detector at Fermilab

  17. A high energy physics perspective

    International Nuclear Information System (INIS)

    Marciano, W.J.

    1997-01-01

    The status of the Standard model and role of symmetry in its development are reviewed. Some outstanding problems are surveyed and possible solutions in the form of additional open-quotes Hidden Symmetries close quotes are discussed. Experimental approaches to uncover open-quotes New Physicsclose quotes associated with those symmetries are described with emphasis on high energy colliders. An outlook for the future is given

  18. Elementary particle physics and high energy phenomena

    International Nuclear Information System (INIS)

    Barker, A.R.; Cumalat, J.P.; de Alwis, S.P.; DeGrand, T.A.; Ford, W.T.; Mahanthappa, K.T.; Nauenberg, U.; Rankin, P.; Smith, J.G.

    1992-06-01

    This report discusses the following research in high energy physics: the properties of the z neutral boson with the SLD detector; the research and development program for the SDC muon detector; the fixed-target k-decay experiments; the Rocky Mountain Consortium for HEP; high energy photoproduction of states containing heavy quarks; and electron-positron physics with the CLEO II and Mark II detectors. (LSP)

  19. Elementary particle physics and high energy phenomena

    Energy Technology Data Exchange (ETDEWEB)

    Barker, A.R.; Cumalat, J.P.; de Alwis, S.P.; DeGrand, T.A.; Ford, W.T.; Mahanthappa, K.T.; Nauenberg, U.; Rankin, P.; Smith, J.G.

    1992-06-01

    This report discusses the following research in high energy physics: the properties of the z neutral boson with the SLD detector; the research and development program for the SDC muon detector; the fixed-target k-decay experiments; the Rocky Mountain Consortium for HEP; high energy photoproduction of states containing heavy quarks; and electron-positron physics with the CLEO II and Mark II detectors. (LSP).

  20. High energy physics advisory panel's subpanel on vision for the future of high-energy physics

    International Nuclear Information System (INIS)

    1994-05-01

    This report was requested by the Secretary of Energy to (1) define a long-term program for pursuing the most important high-energy physics goals since the termination of the Superconducting Super Collider (SSC) project, (2) assess the current US high-energy physics program, and (3) make recommendations regarding the future of the field. Subjects on which recommendations were sought and which the report addresses were: high-energy physics funding priorities; facilitating international collaboration for future construction of large high-energy physics facilities; optimizing uses of the investment made in the SSC; how to encourage displaced scientists and engineers to remain in high-energy physics and to attract young scientists to enter the field in the future. The report includes a description of the state of high-energy physics research in the context of history, a summary of the SSC project, and documentation of the report's own origins and development

  1. Energy Blocks — A Physical Model for Teaching Energy Concepts

    Science.gov (United States)

    Hertting, Scott

    2016-01-01

    Most physics educators would agree that energy is a very useful, albeit abstract topic. It is therefore important to use various methods to help the student internalize the concept of energy itself and its related ideas. These methods include using representations such as energy bar graphs, energy pie charts, or energy tracking diagrams. Activities and analogies like Energy Theater and Richard Feynman's blocks, as well as the popular money (or wealth) analogy, can also be very effective. The goal of this paper is to describe a physical model of Feynman's blocks that can be employed by instructors to help students learn the following energy-related concepts: 1. The factors affecting each individual mechanical energy storage mode (this refers to what has been traditionally called a form of energy, and while the Modeling Method of instruction is not the focus of this paper, much of the energy related language used is specific to the Modeling Method). For example, how mass or height affects gravitational energy; 2. Energy conservation; and 3. The graphical relationships between the energy storage mode and a factor affecting it. For example, the graphical relationship between elastic energy and the change in length of a spring.

  2. Trends in experimental high-energy physics

    International Nuclear Information System (INIS)

    Sanford, T.W.L.

    1982-06-01

    Data from a scan of papers in Physical Review Letters and Physical Review are used to demonstrate that American high-energy physicists show a pattern of accelerator and instrumentation usage characteristic of that expected from the logistic-substitution model of Marchetti and of Fischer and Pry

  3. Astrophysics, cosmology and high energy physics

    International Nuclear Information System (INIS)

    Rees, M.J.

    1983-01-01

    A brief survey is given of some topics in astrophysics and cosmology, with special emphasis on the inter-relation between the properties of the early Universe and recent ideas in high energy physics, and on simple order-of-magnitude arguments showing how the scales and dimensions of cosmic phenomena are related to basic physical constants. (orig.)

  4. Studies in theorectical high energy particles physics

    International Nuclear Information System (INIS)

    Aratyn, H.; Keung, Wai-Yee; Panigrahi, P.; Sukhatme, U.

    1990-02-01

    This paper discusses the research being done at the University of Illinois in theoretical high energy physics. Some areas discussed are string models, collider physics, symmetries in gauge theories, sigma model, radiative decay of mesons, supersymmetry, superconducting, and hydroproduction of charm

  5. An experimental high energy physics program

    International Nuclear Information System (INIS)

    Gaidos, J.A.; Loeffler, F.J.; McIlwain, R.L.; Miller, D.H.; Palfrey, T.R.; Shibata, E.I.

    1988-01-01

    The theoretical and experimental high energy physics program is reviewed, including particle detectors. Topics discussed include τ and B physics, gamma-ray astronomy, neutrino oscillations in matter with three flavors applied to solar and supernova neutrinos, effective field theories, a possible fifth force, the dynamics of hadrons and superstrings, mathematics of grand unified theories, chiral symmetry breaking, physics at the Fermilab collider, and development of the TOPAZ detector

  6. Attainment of Electron Beam Suitable for Medium Energy Electron Cooling

    Energy Technology Data Exchange (ETDEWEB)

    Seletskiy, Sergei M. [Univ. of Rochester, NY (United States)

    2005-01-01

    Electron cooling of charged particle beams is a well-established technique at electron energies of up to 300 keV. However, up to the present time the advance of electron cooling to the MeV-range energies has remained a purely theoretical possibility. The electron cooling project at Fermilab has recently demonstrated the ¯rst cooling of 8.9 GeV/c antiprotons in the Recycler ring, and therefore, has proved the validity of the idea of relativistic electron cool- ing. The Recycler Electron Cooler (REC) is the key component of the Teva- tron Run II luminosity upgrade project. Its performance depends critically on the quality of electron beam. A stable electron beam of 4.3 MeV car- rying 0.5 A of DC current is required. The beam suitable for the Recycler Electron Cooler must have an angular spread not exceeding 200 ¹rad. The full-scale prototype of the REC was designed, built and tested at Fermilab in the Wideband laboratory to study the feasibility of attaining the high-quality electron beam. In this thesis I describe various aspects of development of the Fermilab electron cooling system, and the techniques used to obtain the electron beam suitable for the cooling process. In particular I emphasize those aspects of the work for which I was principally responsible.

  7. Spin effects in medium-energy electron-3He scattering

    International Nuclear Information System (INIS)

    van den Brand, J.F.J.; Alarcon, R.; Bauer, T.

    1998-01-01

    New physics can be accessed by scattering polarized electrons from a polarized 3 He internal gas target. It is discussed how the asymmetries for the reactions 3 vector He(vector e,e'), 3 vector He(vector e,e'p), 3 vector He(vector e,e'n), 3 vector He(vector e,e'd), and 3 vector He(vector e,e'pn) may provide precise information on the S' and the D-wave parts of the 3 He ground-state wave function, the neutron form factors, and the role of spin-dependent reaction mechanism effects. The experiment uses up to 900 MeV (polarized) electrons from the AmPS storage ring in Amsterdam, Netherlands, in combination with large acceptance electron and hadron detectors. (orig.)

  8. Biomedical applications of medium energy particle beams at LAMPF

    International Nuclear Information System (INIS)

    Bradbury, J.N.

    1978-01-01

    At LAMPF an 800-MeV proton accelerator is used to produce intense beams of secondary protons, pi mesons, and muons which are being employed in several areas of biomedical research. The primary proton beam is used to produce short-lived radioisotopes of clinical interest. Carefully tailored secondary proton beams are used to obtain density reconstructions of samples with a dose much less than that required by x-ray CT scanners. The elemental composition of tissue samples is being determined non-destructively with muonic x-ray analysis. Finally, an extensive program, with physical, biological, and clinical components, is underway to evaluate negative pi mesons for use in cancer radiotherapy. The techniques used in these experiments and recent results are described

  9. Section for nuclear physics and energy physics - Annual report

    International Nuclear Information System (INIS)

    1991-04-01

    The report summarizes the research and development activities of the Section for nuclear physics and energy physics at the University of Oslo in 1990. It includes experimental and theoretical nuclear physics, as well as other fields of physics in which members of the section have participated. The report describes completed projects and work currently in progress. The experimental activities in nuclear physics have, as in the previous years, mainly been centered around the cyclotron laboratory with the SCANDITRONIX MC-35 cyclotron. Using the CACTUS multidetector system, several experiments in collaboration with the nuclear physics group at the University of Bergen have been completed. Some results have been published and were also presented at the international conference in Oak Ridge, USA, while more data remains to be analyzed

  10. Statistics for High Energy Physics

    CERN Multimedia

    CERN. Geneva

    2018-01-01

    The lectures emphasize the frequentist approach used for Dark Matter search and the Higgs search, discovery and measurements of its properties. An emphasis is put on hypothesis test using the asymptotic formulae formalism and its derivation, and on the derivation of the trial factor formulae in one and two dimensions. Various test statistics and their applications are discussed.  Some keywords: Profile Likelihood, Neyman Pearson, Feldman Cousins, Coverage, CLs. Nuisance Parameters Impact, Look Elsewhere Effect... Selected Bibliography: G. J. Feldman and R. D. Cousins, A Unified approach to the classical statistical analysis of small signals, Phys.\\ Rev.\\ D {\\bf 57}, 3873 (1998). A. L. Read, Presentation of search results: The CL(s) technique,'' J.\\ Phys.\\ G {\\bf 28}, 2693 (2002). G. Cowan, K. Cranmer, E. Gross and O. Vitells,  Asymptotic formulae for likelihood-based tests of new physics,' Eur.\\ Phys.\\ J.\\ C {\\bf 71}, 1554 (2011) Erratum: [Eur.\\ Phys.\\ J.\\ C {\\bf 73}...

  11. CAMAC high energy physics electronics hardware

    International Nuclear Information System (INIS)

    Kolpakov, I.F.

    1977-01-01

    CAMAC hardware for high energy physics large spectrometers and control systems is reviewed as is the development of CAMAC modules at the High Energy Laboratory, JINR (Dubna). The total number of crates used at the Laboratory is 179. The number of CAMAC modules of 120 different types exceeds 1700. The principles of organization and the structure of developed CAMAC systems are described. (author)

  12. FNAL R and D in medium energy electron cooling

    CERN Document Server

    Nagaitsev, S; Crawford, A C; Kroc, T; MacLachlan, J; Saewert, G; Schmidt, C W; Shemyakin, A; Warner, A

    2000-01-01

    The first stage of the Fermilab Electron Cooling R and D program is now complete: a technology necessary to generate hundreds of milliamps of electron beam current at MeV energies has been demonstrated. Conceptual design studies show that with an electron beam current of 200 mA and with a cooling section of 20 m electron cooling in the 8.9 GeV/c Fermilab Recycler ring can provide antiproton stacking rates suitable for the Tevatron upgrades beyond Run II luminosity goals. A novel electron beam transport scheme with a weak magnetic field at the cathode and in the cooling section, and with discrete focusing elements in between will be used. A prototype of such an electron cooling system is now being built at Fermilab as part of the continuing R and D program. This paper describes the status of the electron cooling R and D program at Fermilab.

  13. A medium energy facility for variable temperature implantation and analysis

    International Nuclear Information System (INIS)

    Chaumont, J.; Lalu, F.; Salome, M.; Lamoise, A.M.; Bernas, H.

    1981-01-01

    We describe the new ion implantation system at Orsay, which operates from 5 to 190 kV. Sixty-five elements from H to U have been implanted in insulators, semiconductors or metals. Significant currents (several μA) of three-fold ionized elements have been implanted at energies up to 570 keV. Details are provided on the target-holders used, particularly on a variable temperature (1.7-300 K) cryostat and a variable temperature (80-300 K) goniometer, and on an in situ Rutherford back-scattering analysis set-up (using the 380 keV He 2+ beam) used in conjunction with all these target-holders. The latter system is used for studies of metastable low-temperature implanted alloys: specific examples will be given. (orig.)

  14. Feasibility of a medium-size central cogenerated energy facility, energy management memorandum

    Science.gov (United States)

    Porter, R. W.

    1982-09-01

    The thermal-economic feasibility was studied of a medium-size central cogenerated energy facility designed to serve five varied industries. Generation options included one dual-fuel diesel and one gas turbine, both with waste heat boilers, and five fired boilers. Fuels included natural gas, and for the fired-boiler cases, also low-sulphur coal and municipal refuse. The fired-boiler cogeneration systems employed back-pressure steam turbines. For coal and refuse, the option of steam only without cogeneration was also assessed. The refuse-fired cases utilized modular incinerators. The options provided for a wide range of steam and electrical capacities. Deficient steam was assumed generated independently in existing equipment. Excess electrical power over that which could be displaced was assumed sold to Commonwealth Edison Company under PURPA (Public Utility Regulator Policies Act). The facility was assumed operated by a mutually owned corporation formed by the cogenerated power users. The economic analysis was predicted on currently applicable energy-investment tax credits and accelerated depreciation for a January 1985 startup date. Based on 100% equity financing, the results indicated that the best alternative was the modular-incinerator cogeneration system.

  15. Energetic Communities : Planning support for sustainable energy transition in small- and medium-sized communities

    NARCIS (Netherlands)

    Sager-Klauß, C.V.

    2016-01-01

    Small- and medium-sized communities might prove to be game-changers in the overall energy transition because many problems have to be solved within their ambit. Urban planning is dealing with the numerous processes of urban change. Energy is a fairly new task to be addressed and many stakeholders

  16. Design of medium energy beam transport line between the RFQ and ...

    Indian Academy of Sciences (India)

    Abstract. The design of a medium energy beam transport (MEBT) line comprising of a re-buncher and four quadrupoles, two upstream and the other two downstream of the re-buncher, has been presented. The design was done to ensure almost 100% transport of heavy-ion beams of about 99 keV/u energy from RFQ having ...

  17. Time-domain electromagnetic energy in a frequency-dispersive left-handed medium

    International Nuclear Information System (INIS)

    Cui Tiejun; Kong Jinau

    2004-01-01

    From Maxwell's equations and the Poynting theorem, the time-domain electric and magnetic energy densities are generally defined in the frequency-dispersive media based on the conservation of energy. As a consequence, a general definition of electric and magnetic energy is proposed. Comparing with existing formulations of electric and magnetic energy in frequency-dispersive media, the new definition is more reasonable and is valid in any case. Using the new definition and staring from the equation of motion, we have shown rigorously that the total energy density and the individual electric and magnetic energy densities are always positive in a realistic artificial left-handed medium (LHM) [R. A. Shelby, D. R. Smith, and S. Schultz, Science 292, 77 (2001)], which obeys actually the Lorentz medium model, although such a LHM has negative permittivity and negative permeability simultaneously in a certain frequency range. We have also shown that the conservation of energy is not violated in LHM. The earlier conclusions can be easily extended to the Drude medium model and the cold plasma medium model. Through an exact analysis of a one-dimensional transient current source radiating in LHM, numerical results are given to demonstrate that the work done by source, the power flowing outwards a surface, and the electric and magnetic energy stored in a volume are all positive in the time domain

  18. Evaluation at the medium energy region for Pb-208 and Bi-209

    Energy Technology Data Exchange (ETDEWEB)

    Fukahori, Tokio; Pearlstein, S.

    1991-01-01

    Medium energy nuclear data in the 1--1000 MeV range is necessary to accelerator applications which include spallation neutron sources for radioactive waste treatment and accelerator shielding design, medical applications which include isotopes production and radiation therapy, and space applications. For the design of fission and fusion reactors, the nuclear data file for neutrons below 20 MeV is available and well evaluated. Evaluated nuclear data for protons and data in the medium energy region, however, have not been prepared completely. Evaluation in the medium energy region was performed using the theoretical calculation code ALICE-P or experimental data. In this paper, the evaluation of neutron and proton induced nuclear data for Pb-208 and Bi-209 has been performed using ALICE-P, empirical calculations and new systematics for the fission cross section. The evaluated data are compiled for possible inclusion in the ENDF/B-VI High Energy File. 204 refs., 51 figs., 9 tabs.

  19. Energy density and velocity of electromagnetic waves in lossy chiral medium

    International Nuclear Information System (INIS)

    Vorobyev, O B

    2014-01-01

    The average energy density of the macroscopic quasimonochromatic electromagnetic field U ts (t,r) in a linear passive chiral lossy medium described by the constitutive E–H relations is determined using a microscopic model. According to the model, U ts (t,r) is equal to the sum of the average energy densities of the electromagnetic field in free space U t0 (t,r) and electromagnetic oscillations in structural elements U s (t,r) induced by the electromagnetic wave. Making use of the Poynting theorem, the energy density U ts (t,r)≥U t0 (t,r) and power density of losses are derived as functions of the Poynting vector, polarization of the electromagnetic waves, phase shift between the field vectors and refractive index of a chiral medium. The exact energy velocity of the quasimonochromatic electromagnetic waves satisfying relativistic causality is determined using U ts (t,r). The approximate energy velocities of the quasimonochromatic electromagnetic wave are determined using energy density components approximating U ts (t,r) (e.g., the sum of the positive energy densities of the macroscopic electric and magnetic fields as well as the energy density of magnetoelectric cross-coupling). Comparison of the exact and approximate energy velocities with the group velocity in the case of a chiral lossy medium with a single-resonant frequency clarifies the concept of the electromagnetic energy and demonstrates the fundamental significance of the exact energy velocity. (paper)

  20. HIGH ENERGY PHYSICS: CERN Link Breathes Life Into Russian Physics.

    Science.gov (United States)

    Stone, R

    2000-10-13

    Without fanfare, 600 Russian scientists here at CERN, the European particle physics laboratory, are playing key roles in building the Large Hadron Collider (LHC), a machine that will explore fundamental questions such as why particles have mass, as well as search for exotic new particles whose existence would confirm supersymmetry, a popular theory that aims to unify the four forces of nature. In fact, even though Russia is not one of CERN's 20 member states, most top high-energy physicists in Russia are working on the LHC. Some say their work could prove the salvation of high-energy physics back home.

  1. Towards measuring the semantic capacity of a physical medium demonstrated with elementary cellular automata.

    Science.gov (United States)

    Dittrich, Peter

    2018-02-01

    The organic code concept and its operationalization by molecular codes have been introduced to study the semiotic nature of living systems. This contribution develops further the idea that the semantic capacity of a physical medium can be measured by assessing its ability to implement a code as a contingent mapping. For demonstration and evaluation, the approach is applied to a formal medium: elementary cellular automata (ECA). The semantic capacity is measured by counting the number of ways codes can be implemented. Additionally, a link to information theory is established by taking multivariate mutual information for quantifying contingency. It is shown how ECAs differ in their semantic capacities, how this is related to various ECA classifications, and how this depends on how a meaning is defined. Interestingly, if the meaning should persist for a certain while, the highest semantic capacity is found in CAs with apparently simple behavior, i.e., the fixed-point and two-cycle class. Synergy as a predictor for a CA's ability to implement codes can only be used if context implementing codes are common. For large context spaces with sparse coding contexts synergy is a weak predictor. Concluding, the approach presented here can distinguish CA-like systems with respect to their ability to implement contingent mappings. Applying this to physical systems appears straight forward and might lead to a novel physical property indicating how suitable a physical medium is to implement a semiotic system. Copyright © 2017 Elsevier B.V. All rights reserved.

  2. High energy physics at UC Riverside

    International Nuclear Information System (INIS)

    1997-01-01

    This report discusses progress made for the following two tasks: experimental high energy physics, Task A, and theoretical high energy physics, Task B. Task A1 covers hadron collider physics. Information for Task A1 includes: personnel/talks/publications; D0: proton-antiproton interactions at 2 TeV; SDC: proton-proton interactions at 40 TeV; computing facilities; equipment needs; and budget notes. The physics program of Task A2 has been the systematic study of leptons and hadrons. Information covered for Task A2 includes: personnel/talks/publications; OPAL at LEP; OPAL at LEP200; CMS at LHC; the RD5 experiment; LSND at LAMPF; and budget notes. The research activities of the Theory Group are briefly discussed and a list of completed or published papers for this period is given

  3. High energy physics at UC Riverside

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-07-01

    This report discusses progress made for the following two tasks: experimental high energy physics, Task A, and theoretical high energy physics, Task B. Task A1 covers hadron collider physics. Information for Task A1 includes: personnel/talks/publications; D0: proton-antiproton interactions at 2 TeV; SDC: proton-proton interactions at 40 TeV; computing facilities; equipment needs; and budget notes. The physics program of Task A2 has been the systematic study of leptons and hadrons. Information covered for Task A2 includes: personnel/talks/publications; OPAL at LEP; OPAL at LEP200; CMS at LHC; the RD5 experiment; LSND at LAMPF; and budget notes. The research activities of the Theory Group are briefly discussed and a list of completed or published papers for this period is given.

  4. The Physical Characteristics of Interstellar Medium in NGC 3665 with Herschel Observations

    Science.gov (United States)

    Xiao, Meng-Yuan; Zhao, Yinghe; Gu, Qiu-Sheng; Shi, Yong

    2018-02-01

    We present the analysis of the physical properties of the interstellar medium in the nearby early-type galaxy NGC 3665, based on the far-infrared photometric and spectroscopic data as observed by the Herschel Space Observatory. The fit to the spectral energy distribution reveals a high dust content in the galaxy, with a dust-to-stellar mass ratio of {M}dust}/M * ∼ 1.1 × 10‑4 that is nearly three times larger than the mean value of local S0+S0a galaxies. For the ionized regions (H II regions), the electron density (n e ) is around 49.5 ± 11.9 cm‑3 based on the [N II] 122 μm/[N II] 205 μm ratio. For the photodissociation regions, the heating efficiency ranges from 1.26 × 10‑3 to 1.37 × 10‑3 based on the ([C II]+[O I] 63 μm)/{L}TIR}, which is slightly lower than other local galaxies; the hydrogen nucleus density and the strength of the far-UV radiation field are n ∼ 104 cm‑3 and G 0 ∼ 10‑0.25, respectively. The above results are consistent with the presence of weak active galactic nuclei and a low level of star-forming activity in NGC 3665. Our results give strong support to the “morphological quenching” scenario, where a compact, massive bulge can stabilize the amount of cool gas against star formation. Herschel is an ESA space observatory with science instruments provided by European-led Principal Investigator consortia and with important participation from NASA.

  5. SZ observations to study the physics of the intra-cluster medium

    Science.gov (United States)

    Pointecouteau, E.

    2017-10-01

    Recent Sunyaev-Zeldovich surveys have delivered new catalogues of galaxy clusters over the whole sky and out to distant redshifts. The new generation of SZ facilities (NIKA, MUSTANG, ALMA) now focuses on high angular resolution and high sensitivity. I will discuss the current status of SZ observations and the perspective with the future instruments for the measurement of physical properties of galaxy clusters, and their relevance to the study of the ICM physics. I will also discuss the natural synergy between the SZ signal and the X-ray emission from the hot intra-cluster medium.

  6. Elementary particle physics and high energy phenomena

    International Nuclear Information System (INIS)

    Barker, A.R.; Cumalat, J.P.; De Alwis, S.P.; DeGrand, T.A.; Ford, W.T.; Mahanthappa, K.T.; Nauenberg, U.; Rankin, P.; Smith, J.G.

    1992-06-01

    Experimental and theoretical high-energy physics programs at the University of Colorado are reported. Areas of concentration include the following: study of the properties of the Z 0 with the SLD detector; fixed-target K-decay experiments; the R ampersand D program for the muon system: the SDC detector; high-energy photoproduction of states containing heavy quarks; electron--positron physics with the CLEO II detector at CESR; lattice QCD; and spin models and dynamically triangulated random surfaces. 24 figs., 2 tabs., 117 refs

  7. High energy physics computing in Japan

    International Nuclear Information System (INIS)

    Watase, Yoshiyuki

    1989-01-01

    A brief overview of the computing provision for high energy physics in Japan is presented. Most of the computing power for high energy physics is concentrated in KEK. Here there are two large scale systems: one providing a general computing service including vector processing and the other dedicated to TRISTAN experiments. Each university group has a smaller sized mainframe or VAX system to facilitate both their local computing needs and the remote use of the KEK computers through a network. The large computer system for the TRISTAN experiments is described. An overview of a prospective future large facility is also given. (orig.)

  8. UNIVERSITY OF ARIZONA HIGH ENERGY PHYSICS PROGRAM

    Energy Technology Data Exchange (ETDEWEB)

    Rutherfoord, John P. [University of Arizona; Johns, Kenneth A. [University of Arizona; Shupe, Michael A. [University of Arizona; Cheu, Elliott C. [University of Arizona; Varnes, Erich W. [University of Arizona; Dienes, Keith [University of Arizona; Su, Shufang [University of Arizona; Toussaint, William Doug [University of Arizona; Sarcevic, Ina [University of Arizona

    2013-07-29

    The High Energy Physics Group at the University of Arizona has conducted forefront research in elementary particle physics. Our theorists have developed new ideas in lattice QCD, SUSY phenomenology, string theory phenomenology, extra spatial dimensions, dark matter, and neutrino astrophysics. The experimentalists produced significant physics results on the ATLAS experiment at CERN's Large Hadron Collider and on the D0 experiment at the Fermilab Tevatron. In addition, the experimentalists were leaders in detector development and construction, and on service roles in these experiments.

  9. Nuclear structure studies by the scattering of medium-energy electrons. Progress report, September 1, 1984-August 31, 1985

    International Nuclear Information System (INIS)

    Peterson, G.A.; Hicks, R.S.

    1985-09-01

    The University of Massachusetts Medium Energy Nuclear Physics Group reports the status of its experimental and theoretical programs. An overview of projects in elastic and quasi-elastic electron scattering which have been completed in the past year is given. Projects which have been designed and which will soon be started are described as well. Descriptions of the theoretical models for nucleon-nucleon interactions, nuclear structure, electromagnetic interactions, and weak interactions are given as well. Listings of the literature of the group are given

  10. New accelerators in high-energy physics

    International Nuclear Information System (INIS)

    Blewett, J.P.

    1982-01-01

    First, I should like to mention a few new ideas that have appeared during the last few years in the accelerator field. A couple are of importance in the design of injectors, usually linear accelerators, for high-energy machines. Then I shall review some of the somewhat sensational accelerator projects, now in operation, under construction or just being proposed. Finally, I propose to mention a few applications of high-energy accelerators in fields other than high-energy physics. I realize that this is a digression from my title but I hope that you will find it interesting

  11. Indiana University High Energy Physics, Task A

    Energy Technology Data Exchange (ETDEWEB)

    Brabson, B.; Crittenden, R.; Dzierba, A.; Hanson, G.; Martin, H.; Marshall, T.; Mir, R.; Mouthuy, T.; Ogren, H.; Rust, D.; Teige, S.; Zieminska, D.; Zieminski, A.

    1991-01-01

    This report discusses research in High Energy Physics under the following experiments: Meson spectroscopy at BNL; dimuon production at FNAL; the DO collider experiment at FNAL; the Mark II experiment at SLC and PEP; the OPAL experiment at CERN; and the superconducting supercollider.

  12. Nuclear emulsion and high-energy physics

    International Nuclear Information System (INIS)

    Sun Hancheng; Zhang Donghai

    2008-01-01

    The history of the development of nuclear emulsion and its applications in high-energy physics, from the discovery of pion to the discovery of tau neutrino, are briefly reviewed in this paper. A new stage of development of nuclear-emulsion technique is discussed

  13. Theoretical and experimental high energy physics

    International Nuclear Information System (INIS)

    Gasiorowicz, S.; Ruddick, K.

    1988-01-01

    This report discusses experimental and theoretical work in High Energy Physics. Some topics discussed are: quantum field theory; supersymmetry; cosmology; superstring model; relic photinos; inflationary universe; dark matter; standard model; supernovae; semileptonic decay; quantum Langevin equation; underground neutrino detection at Soudan; strange quark systems; cosmic ray detection; superconducting super collider detectors; and studies of direct photon production

  14. Physics landscape-fixed target energies

    Energy Technology Data Exchange (ETDEWEB)

    Berger, E.L.

    1989-10-01

    An introductory review is presented of physics issues and opportunities at Fermilab fixed-target energies. Included are discussions of precision electroweak studies; deep inelastic lepton scattering; heavy quark production, spectroscopy, and decays; perturbative QCD; prompt photon production; massive lepton production; and spin dependence. 79 refs., 7 figs.

  15. High-Energy Physics: Exit America?

    CERN Multimedia

    Seife, Charles

    2005-01-01

    Budget cuts and cancellations threaten to end U.S. exploration of the particle frontier. Fermilab's Tevatron, due to shut down around 200, could be the last large particle accelerator in the United States; the Large Hadron Collider in Geneva should ensure European dominance of high-energy physics (3 pages)

  16. Status of (US) High Energy Physics Networking

    International Nuclear Information System (INIS)

    Montgomery, H.E.

    1987-02-01

    The current status of Networking to and between computers used by the High Energy Physics community is discussed. Particular attention is given to developments over the last year and to future prospects. Comparison between the current status and that of two years ago indicates that considerable strides have been made but that much remains to be done to achieve an acceptable level of functionality

  17. Resume: networking in high energy physics

    International Nuclear Information System (INIS)

    Hutton, J.S.

    1985-11-01

    Networking in High Energy Physics covers communications inside the experiment and internationally. Inside the experiment the need for agreed 'codes of practice' is now accepted. Within Europe it is accepted that a common infrastructure based on the use of the ISO OSI protocols should be used. In the USA a community initiative has been proposed. The background to these approaches is discussed. (author)

  18. Theoretical and experimental high energy physics

    International Nuclear Information System (INIS)

    Walsh, T.; Ruddick, K.

    1990-01-01

    This report discusses the following topics: The Soudan enterprise; study of strange quarks at Fermilab; direct photons at Fermilab; the Brookhaven programs; AMY and CLEO: studies of e + e - annihilations; cosmic ray studies with the DO muon chamber; progress report on HEP computer upgrade; muon triggering and reconstruction at SSC; and, theoretical high energy physics

  19. Indiana University High Energy Physics, Task A

    International Nuclear Information System (INIS)

    Brabson, B.; Crittenden, R.; Dzierba, A.; Hanson, G.; Martin, H.; Marshall, T.; Mir, R.; Mouthuy, T.; Ogren, H.; Rust, D.; Teige, S.; Zieminska, D.; Zieminski, A.

    1991-01-01

    This report discusses research in High Energy Physics under the following experiments: Meson spectroscopy at BNL; dimuon production at FNAL; the DO collider experiment at FNAL; the Mark II experiment at SLC and PEP; the OPAL experiment at CERN; and the superconducting supercollider

  20. Physics landscape-fixed target energies

    International Nuclear Information System (INIS)

    Berger, E.L.

    1989-10-01

    An introductory review is presented of physics issues and opportunities at Fermilab fixed-target energies. Included are discussions of precision electroweak studies; deep inelastic lepton scattering; heavy quark production, spectroscopy, and decays; perturbative QCD; prompt photon production; massive lepton production; and spin dependence. 79 refs., 7 figs

  1. Space-time picture of relativistic propagation of medium energy hadrons through nuclei

    International Nuclear Information System (INIS)

    Bleszynski, M.; Jaroszewicz, T.

    1985-01-01

    Relativistic virtual pair creation effects in hadron-nucleus scattering at medium energies are discussed. A close analogy is found between these effects (particle propagation backwards in time) and some of noneikonal correlations to the Glauber theory, arising from particle propagation backwards in space. In multiple scattering both effects appear only for configurations involving overlapping scatterers and lead to the non-additivity of phase shifts. The proper-time path-integral formalism is found to provide an intuitive geometrical picture of these phenomena. The relativistic corrections are estimated to be of the order k/(aE/sup 2/), k being the particle momentum, E its energy, and a the target size. At medium energies they are comparable to noneikonal corrections, of order 1/(ak). Both effects vanish at high energy, when particle propagation in space-time can be described by means of geometrical optics

  2. The medium reorganization energy for the charge transfer reactions in proteins.

    Science.gov (United States)

    Krishtalik, Lev I

    2011-11-01

    A low static dielectric permittivity of proteins causes the low reorganization energies for the charge transfer reactions inside them. This reorganization energy does not depend on the pre-existing intraprotein electric field. The charge transferred inside the protein interacts with its aqueous surroundings; for many globular proteins, the effect of this surroundings on the reorganization energy is comparable with the effect of reorganization of the protein itself while for the charge transfer in the middle of membrane the aqueous phase plays a minor role. Reorganization energy depends strongly on the system considered, and hence there is no sense to speak on the "protein reorganization energy" as some permanent characteristic parameter. We employed a simple algorithm for calculation of the medium reorganization energy using the numerical solution of the Poisson-Boltzmann equation. Namely, the reaction field energy was computed in two versions - all media having optical dielectric permittivity, and all the media with the static one; the difference of these two quantities gives the reorganization energy. We have calculated reorganization energies for electron transfer in cytochrome c, various ammine-ruthenated cytochromes c, azurin, ferredoxin, cytochrome c oxidase, complex of methylamine dehydrogenase with amicyanin, and for proton transfer in α-chymotrypsin. It is shown that calculation of the medium reorganization energy can be a useful tool in analysis of the mechanisms of the charge transfer reactions in proteins. 2011 Elsevier B.V. All rights reserved.

  3. Performance of a Polarized Deuterium Internal Target in a Medium-Energy Electron Storage Ring.

    NARCIS (Netherlands)

    Zhou, Z.L.; Ferro Luzzi, M.M.E.; van den Brand, J.F.J.; Bulten, H.J.; Alarcon, R.; van Bommel, R.; Botto, T.; Bouwhuis, M.; Buchholz, M.; Choi, S.; Comfort, J.; Doets, M.; Dolfini, S.; Ent, R.; Gaulard, C.; de Jager, C.W.; Lang, J.; de Lange, D.J.; Miller, M.A.; Passchier, E.; Passchier, I.; Poolman, H.R.; Six, E.; Steijger, J.J.M.; Unal, O.; de Vries, H.

    1996-01-01

    A polarized deuterium target internal to a medium-energy electron storage ring is described in the context of spindependent (e, e′d) and (e ,e′p) experiments. Tensor polarized deuterium was produced in an atomic beam source and injected into a storage cell target. A Breit-Rabi polarimeter was used

  4. Medium modification of strange hadronic resonances at SIS, RHIC and LHC energies

    Science.gov (United States)

    Tolos, Laura

    2018-02-01

    The properties of strange pseudoscalar and vectors mesons as well as strange baryon resonances in dense matter are reviewed. Some open questions on the properties of strange hadrons in medium are addressed, such as the experimental signatures of inmedium effects coming from the hadronic phase on the final observables in heavy-ion collisions for the experimental conditions at SIS, RHIC and LHC energies.

  5. Medium-sized grazing incidence high-energy X-ray telescopes employing continuously graded multilayers

    DEFF Research Database (Denmark)

    Joensen, K. D.; Christensen, Finn Erland; Schnopper, H. W.

    1993-01-01

    The authors present a concept of continuously graded multilayer structures for medium-sized X-ray telescopes which is based on several material combinations. They show that the theoretical reflectivity characteristics of these structures make them very advantageous when applied to high energy X-r...

  6. Design of medium energy beam transport line between the RFQ and ...

    Indian Academy of Sciences (India)

    Design of medium energy beam transport line between the RFQ and the Linac in the radioactive ion beam facility at VECC, Kolkata. S Dechoudhury Vaishali Naik Manas Mondal Hemendra Kumar Pandey Avik Chatterjee Dirtha Sanyal Debasis Bhowmick Alok Chakrabarti. Research Articles Volume 75 Issue 3 September ...

  7. Electronic Instrumentations for High Energy Particle Physics and Neutrino Physics

    CERN Document Server

    AUTHOR|(INSPIRE)INSPIRE-00452332

    The present dissertation describes design, qualification and operation of several electronic instrumentations for High Energy Particle Physics experiments (LHCb) and Neutrino Physics experiments (CUORE and CUPID). Starting from 2019, the LHCb experiment at the LHC accelerator will be upgraded to operate at higher luminosity and several of its detectors will be redesigned. The RICH detector will require a completely new optoelectronic readout system. The development of such system has already reached an advanced phase, and several tests at particle beam facilities allowed to qualify the performance of the entire system. In order to achieve a higher stability and a better power supply regulation for the front-end chip, a rad-hard low dropout linear regulator, named ALDO, has been developed. Design strategies, performance tests and results from the irradiation campaign are presented. In the Neutrino Physics field, large-scale bolometric detectors, like those adopted by CUORE and its future upgrade CUPID, offer u...

  8. Medium Access Control for Thermal Energy Harvesting in Advanced Metering Infrastructures

    DEFF Research Database (Denmark)

    Vithanage, Madava D.; Fafoutis, Xenofon; Andersen, Claus Bo

    2013-01-01

    In this paper we investigate the feasibility of powering wireless metering devices, namely heat cost allocators, by thermal energy harvested from radiators. The goal is to take a first step toward the realization of Energy-Harvesting Advanced Metering Infrastructures (EH-AMIs). While traditional...... battery-powered devices have a limited amount of energy, energy harvesting can potentially provide an infinite amount of energy for continuous operating lifetimes, thus reducing the cost involved in installation and maintenance. The contribution of this work is twofold. First, we experimentally identify...... the potential energy that can be harvested from Low Surface Temperature (LST) radiators. The experiments are based on a developed Energy-Harvesting Heat Cost Allocator (EH-HCA) prototype. On the basis of this measured power budget, we model and analytically compare the currently used Medium Access Control (MAC...

  9. 75 FR 17701 - High Energy Physics Advisory Panel

    Science.gov (United States)

    2010-04-07

    ... DEPARTMENT OF ENERGY High Energy Physics Advisory Panel AGENCY: Department of Energy, Office of... Physics Advisory Panel (HEPAP). Federal Advisory Committee Act (Pub. L. 92-463, 86 Stat. 770) requires... Energy Physics Advisory Panel; U.S. Department of Energy; SC-25/ Germantown Building, 1000 Independence...

  10. 76 FR 53119 - High Energy Physics Advisory Panel

    Science.gov (United States)

    2011-08-25

    ... DEPARTMENT OF ENERGY High Energy Physics Advisory Panel AGENCY: Department of Energy. ACTION... hereby given that the High Energy Physics Advisory Panel will be renewed for a two-year period, beginning...-range planning and priorities in the national High Energy Physics program. Additionally, the renewal of...

  11. University of Oklahoma - High Energy Physics

    Energy Technology Data Exchange (ETDEWEB)

    Skubic, Patrick L. [University of Oklahoma

    2013-07-31

    The High Energy Physics program at the University of Oklahoma, Pat Skubic, Principal Investigator, is attempting to understand nature at the deepest level using the most advanced experimental and theoretical tools. The four experimental faculty, Brad Abbott, Phil Gutierrez, Pat Skubic, and Mike Strauss, together with post-doctoral associates and graduate students, are finishing their work as part of the D0 collaboration at Fermilab, and increasingly focusing their investigations at the Large Hadron Collidor (LHC) as part of the ATLAS Collaboration. Work at the LHC has become even more exciting with the recent discovery by ATLAS and the other collaboration, CMS, of the long-sought Higgs boson, which plays a key role in generating masses for the elementary constituents of matter. Work of the OUHEP group has been in the three areas of hardware, software, and analysis. Now that the Higgs boson has been discovered, completing the Standard Model of fundamental physics, new efforts will focus on finding hints of physics beyond the standard model, such as supersymmetry. The OUHEP theory group (Kim Milton, PI) also consists of four faculty members, Howie Baer, Chung Kao, Kim Milton, and Yun Wang, and associated students and postdocs. They are involved in understanding fundamental issues in formulating theories of the microworld, and in proposing models that carry us past the Standard Model, which is an incomplete description of nature. They therefore work in close concert with their experimental colleagues. One also can study fundamental physics by looking at the large scale structure of the universe; in particular the ``dark energy'' that seems to be causing the universe to expand at an accelerating rate, effectively makes up about 3/4 of the energy in the universe, and yet is totally unidentified. Dark energy and dark matter, which together account for nearly all of the energy in the universe, are an important probe of fundamental physics at the very shortest

  12. Physics at LEP at high energies

    International Nuclear Information System (INIS)

    Barbiellini, G.; Davier, M.; Schrempp, B.; Yamada, S.; Hagiwara, K.; Peccei, R.D.; Schrempp, F.; Zeppenfeld, D.

    1986-02-01

    We discuss some of the physics that is expected to emerge at LEP at high energy (LEP, Phase II). We concentrate in particular on the reaction e + e - -> W + W - and examine various experimental distributions which provide good tests of the standard model - in particular of the three gauge vertex. A careful discussion is also given of means to determine the W-mass, to one part per mil at Lep II. The importance of W decays for a clean determination of the various weak mixing angles is also emphasized. Finally, some possible signals for compositeness, which can be investigated in high energy e + e - collisions, are detailed. (orig.)

  13. High energy experimental physics: Progress report

    International Nuclear Information System (INIS)

    Rosen, J.; Miller, D.

    1988-01-01

    This report contains papers of high energy physics experiments and detector equipment design. Proposals are also given for future experiments. Some of the topics covered in this report are: high energy predictions for /bar char/pp and pp elastic scattering and total cross sections; D0 forward drift chambers; polarized beam facility; analyzing power measurment in inclusive pion production at high transverse momentum; Skyrme model for baryons; string models for color flux tubes; hadronic decays for the /tau/ lepton; and meson form factors in perturbative QCD

  14. Compilation of current high energy physics experiments

    International Nuclear Information System (INIS)

    1978-09-01

    This compilation of current high-energy physics experiments is a collaborative effort of the Berkeley Particle Data Group, the SLAC library, and the nine participating laboratories: Argonne (ANL), Brookhaven (BNL), CERN, DESY, Fermilab (FNAL), KEK, Rutherford (RHEL), Serpukhov (SERP), and SLAC. Nominally, the compilation includes summaries of all high-energy physics experiments at the above laboratories that were approved (and not subsequently withdrawn) before about June 1978, and had not completed taking of data by 1 January 1975. The experimental summaries are supplemented with three indexes to the compilation, several vocabulary lists giving names or abbreviations used, and a short summary of the beams at each of the laboratories (except Rutherford). The summaries themselves are included on microfiche

  15. UNIX at high energy physics Laboratories

    International Nuclear Information System (INIS)

    Silverman, Alan

    1994-01-01

    With more and more high energy physics Laboratories ''downsizing'' from large central proprietary mainframe computers towards distributed networks, usually involving UNIX operating systems, the need was expressed at the 1991 Computers in HEP (CHEP) Conference to create a group to consider the implications of this trend and perhaps work towards some common solutions to ease the transition for HEP users worldwide

  16. BSRF-3B3 Medium Energy X-ray Beamline and Its Application for XAFS Research

    International Nuclear Information System (INIS)

    Ma Chenyan; Cui Mingqi; Zhou Kejin; Zhao Yidong; Tian Yulian; Wu Ziyu; Zheng Lei; Zhu Jie; Zhao Jia; Chen Kai; Sun Lijuan

    2007-01-01

    A new medium X-ray beamline 3B3 covering energy from 1.2 keV up to 6.0 keV was built at Beijing Synchrotron Radiation Facility (BSRF) in 2005. With perfect capability of high monochromaticity, good focus and low harmonics, it could be applied to study metrology, optic component characteristics and medium X-ray absorption spectroscopy (XAS). A simple XAFS apparatus has been set up and some measurements such as S, P, Cl, Ca, Al, Mg K-edge X-ray absorption fine structure (XAFS) in their compounds have also been carried out. The results show that it is feasible to do XAFS research at 3B3 beamline under present condition. The fabrication of a more delicate medium XAFS spectrometer is underway including transmission, fluorescence and electronic yield modes

  17. Technical Support Document: Development of the Advanced Energy Design Guide for Medium to Big Box Retail Buildings - 50% Energy Savings

    Energy Technology Data Exchange (ETDEWEB)

    Bonnema, Eric [National Renewable Energy Lab. (NREL), Golden, CO (United States); Leach, Matt [National Renewable Energy Lab. (NREL), Golden, CO (United States); Pless, Shanti [National Renewable Energy Lab. (NREL), Golden, CO (United States)

    2013-06-05

    This Technical Support Document describes the process and methodology for the development of the Advanced Energy Design Guide for Medium to Big Box Retail Buildings: Achieving 50% Energy Savings Toward a Net Zero Energy Building (AEDG-MBBR) ASHRAE et al. (2011b). The AEDG-MBBR is intended to provide recommendations for achieving 50% whole-building energy savings in retail stores over levels achieved by following ANSI/ASHRAE/IESNA Standard 90.1-2004, Energy Standard for Buildings Except Low-Rise Residential Buildings (Standard 90.1-2004) (ASHRAE 2004b). The AEDG-MBBR was developed in collaboration with the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE), the American Institute of Architects (AIA), the Illuminating Engineering Society of North America (IES), the U.S. Green Building Council (USGBC), and the U.S. Department of Energy.

  18. Technical Support Document: Development of the Advanced Energy Design Guide for Medium to Big Box Retail Buildings - 50% Energy Savings

    Energy Technology Data Exchange (ETDEWEB)

    Bonnema, E.; Leach, M.; Pless, S.

    2013-06-01

    This Technical Support Document describes the process and methodology for the development of the Advanced Energy Design Guide for Medium to Big Box Retail Buildings: Achieving 50% Energy Savings Toward a Net Zero Energy Building (AEDG-MBBR) ASHRAE et al. (2011b). The AEDG-MBBR is intended to provide recommendations for achieving 50% whole-building energy savings in retail stores over levels achieved by following ANSI/ASHRAE/IESNA Standard 90.1-2004, Energy Standard for Buildings Except Low-Rise Residential Buildings (Standard 90.1-2004) (ASHRAE 2004b). The AEDG-MBBR was developed in collaboration with the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE), the American Institute of Architects (AIA), the Illuminating Engineering Society of North America (IES), the U.S. Green Building Council (USGBC), and the U.S. Department of Energy.

  19. Department of High Energy Physics: Overview

    International Nuclear Information System (INIS)

    Nassalski, J.

    1999-01-01

    Full text: The main activity of our Department is experimental high energy physics with accelerators. Experiments are carried using large facilities: - at CERN, the European Laboratory for Particle Physics in Geneva, - at Celsius Storage Ring in Uppsala and - in DESY laboratory in Hamburg, where several groups of physicists from our Department are members of international collaborations. They are listed below together with the main physics interests: At CERN - Delphi at LEP - tests of the Standard Model, b-quark physics, SUSY search, - NA48 - CP-violation in K 0 decays, rare decays, - SMC - spin dependent nucleon structure function, the Bjorken sum, - NA49 and WA98 - heavy ion physics. At CELSIUS - WASA - threshold production of light mesons, rare meson decays. At DESY - ZEUS - proton and photon structure functions, diffractive production. In most of these experiments our Department also contributed to the instrumentation of detectors and is presently involved in data collection, detector supervision and in data analysis. At the same time the Department is also involved in preparation of new experiments: - CMS (Compact Muon Solenoid) and ALICE at the LHC (Large Hadron Collider) at CERN, - COMPASS (Compact Muon and Proton Apparatus for Structure and Spectroscopy) at the SPS at CERN, - WASA-Promice - an upgrade of the present detector at Celsius, - hyperfragment experiment at JINR, Dubna. The department has small workshop which was recently involved in an upgrade of the WASA detector. In our Department there are also two physicists working on the phenomenology of a quark-gluon plasma and on the low energy hadron-hadron interactions. Physicist from our Department collaborate with the Department of the Experimental Physics of Warsaw University. They are also involved in teaching and in supervision of diploma students. There is a group of 9 PhD students. (author)

  20. Topics in calorimetry for high energy physics

    International Nuclear Information System (INIS)

    Hollebeek, R.

    1992-01-01

    These lectures focus on a series of topics now of interest or which have been of interest to designes of calorimeters in the past few years. The examples concentrate on calorimeters from DESY because its focus this year is on e-P physics, and on CDF and SDC because they are best known to the author. Calorimeters are, broadly speaking, devices to measure the total energy of particles. In general, no one device will be optimal for all types of particles. The two broadest classes of calorimeters in high energy physics are the electromagnetic calorimeters used primarily for photons and electrons, and the hadronic calorimeters used for most charged mesons and baryons. Most operate by absorbing and thereby measuring a significant amount of the incoming particles energy directly. Some particles may require special devices for their interactions and observation. Modern calorimeters are characterized by energy and position resolution, and cost and size. Calorimeter cost is often a trade-off between performance desired and money available. The optimum cost will require a careful choice of materials, reduction of the overall size of the detector, elimination of labor intensive construction techniques, and careful consideration of the cost of calibration systems. Since at least some of these requirements which optimize cost and resolution are contradictory, the ideal calorimeter in seldom what one ends up building

  1. Medium energy measurements of N-N parameters. Final technical report, April 1, 1994--September 30, 1996

    International Nuclear Information System (INIS)

    Ambrose, D.; Betts, W.; Coffey, P.; Glass, G.; McDonough, J.; Riley, P.; Tang, J.L.

    1998-08-01

    This document is a final technical report describing the accomplishments of the medium/high energy nuclear physics research program at the University of Texas at Austin. The research program had four main thrusts, only one of which can be considered as measurements of N-N parameters: (1) finishing the data analyses associated with recent LAMPF and TRIUMPF N-N experiments, whose overall purpose has been the determination of the nucleon-nucleon amplitudes, both for isospin 0 and 1 at medium energies; (2) continuing work on BNL E871, a search for rare decay modes of the K L ; (3) work on the RHIC-STAR project, an experiment to create and study a quark gluon plasma and nuclear matter at high energy density; (4) beginning a new AGS experiment (E896) which will search for the lowest mass state of the predicted strange di-baryons, the Ho, and other exotic states of nuclear matter through nucleus-nucleus collisions

  2. 78 FR 50405 - High Energy Physics Advisory Panel

    Science.gov (United States)

    2013-08-19

    ... DEPARTMENT OF ENERGY High Energy Physics Advisory Panel AGENCY: Office of Science, Department of..., General Services Administration, notice is hereby given that the High Energy Physics Advisory Panel will... Sciences Directorate (NSF), on long-range planning and priorities in the national high-energy physics...

  3. UPR/Mayaguez High Energy Physics

    Energy Technology Data Exchange (ETDEWEB)

    Mendez, Hector [Univ. of Puerto Rico, Mayaguez (Puerto Rico)

    2014-10-31

    This year the University of Puerto Rico at Mayaguez (UPRM) High Energy Physics (HEP) group continued with the ongoing research program outlined in the grant proposal. The program is centered on the Compact Muon Solenoid (CMS) experiment at the proton-proton (pp) collisions at the Large Hadron Collider (LHC) at CERN in Geneva, Switzerland. The main research focus is on data analysis and on the preparation for the High Luminosity (HL) LHC or experiment detector upgrade. The physics data analysis included Higgs Doublet Search and measurement of the (1) Λ0b branching fraction, (2) B meson mass, and (3) hyperon θ-b lifetime. The detector upgrade included work on the preparations for the Forward Pixel (FPIX) detector Silicon Sensor Testing in a production run at Fermilab. In addition, the group has taken responsibilities on the Software Release through our former research associate Dr. Eric Brownson who acted until last December as a Level Two Offline Manager for the CMS Upgrade. In support of the CMS data analysis activities carried out locally, the UPRM group has built and maintains an excellent Tier3 analysis center in Mayaguez. This allowed us to analyze large data samples and to continue the development of algorithms for the upgrade tracking robustness we started several years ago, and we plan to resume in the near future. This project involves computer simulation of the radiation damage to be suffered at the higher luminosities of the upgraded LHC. This year we continued to serve as a source of outstanding students for the field of high energy physics. Three of our graduate students finished their MS work in May, 2014, Their theses research were on data analysis of heavy quark b-physics. All of them are currently enrolled at Ph.D. physics program across the nation. One of them (Hector Moreno) at New Mexico University (Hector Moreno), one at University of New Hampshire (Sandra Santiesteban) and one at University of

  4. Some topics concerning N--N and N--D experiments at medium energy

    International Nuclear Information System (INIS)

    Simmons, J.E.

    1975-01-01

    The status of recent proton-proton phase shift analyses is reviewed at medium energy with mention of the state of the n-p I = 0 analyses. Some conclusions are reached, including a recommendation for renewed theoretical effort to calculate absorption parameters for N--N scattering above 300 MeV in higher partial waves (l greater than or equal to 3). Recent experimental data are examined for p-p small angle scattering at 630 MeV and also near 500 MeV. Further small angle experiments on p-p and p-d scattering are deemed desirable. A brief discussion of recent n-p charge exchange experiments is given. Finally, the status of medium to high energy (100 to 2000 MeV) p-d elastic scattering is reviewed with emphasis on back angle scattering and the usefulness of p-d polarization measurements. (1 table, 12 figures, 94 references) (U.S.)

  5. A Pair Production Telescope for Medium-Energy Gamma-Ray Polarimetry

    OpenAIRE

    Hunter, Stanley D.; Bloser, Peter F.; Depaola, Gerardo O.; Dion, Michael P.; DeNolfo, Georgia A.; Hanu, A. R.; Iparraguirre, M. L.; Legere, Jason; McConnell, Mark L.; Nowicki, Suzanne F.; Ryan, James M.; Son, Seunghee; Stecker, Floyd W.

    2013-01-01

    We describe the science motivation and development of a pair production telescope for medium-energy gamma-ray polarimetry. Our instrument concept, the Advanced Energetic Pair Telescope (AdEPT), takes advantage of the Three-Dimensional Track Imager, a low-density gaseous time projection chamber, to achieve angular resolution within a factor of two of the pair production kinematics limit (~0.6 deg at 70 MeV), continuum sensitivity comparable with the Fermi-LAT front detector (

  6. Medium energy hadron-nucleus scattering in the 1/N expansion formalism

    International Nuclear Information System (INIS)

    Kuyucak, S.; Morrison, I.

    1992-01-01

    The algebraic-eikonal approach to the medium energy hadron-nucleus scattering is generalized to arbitrary interactions and boson types using the 1/N expansion technique for the interacting boson model. The results are used in a comparative study of proton scattering from deformed nuclei in the sd and sdg boson models. The two models give almost identical results for a pure quadrupole interaction but widely differ when a hexadecapole interaction is included. 25 refs., 3 tabs., 7 figs

  7. Advertisement-Based Energy Efficient Medium Access Protocols for Wireless Sensor Networks

    Science.gov (United States)

    Ray, Surjya Sarathi

    One of the main challenges that prevents the large-scale deployment of Wireless Sensor Networks (WSNs) is providing the applications with the required quality of service (QoS) given the sensor nodes' limited energy supplies. WSNs are an important tool in supporting applications ranging from environmental and industrial monitoring, to battlefield surveillance and traffic control, among others. Most of these applications require sensors to function for long periods of time without human intervention and without battery replacement. Therefore, energy conservation is one of the main goals for protocols for WSNs. Energy conservation can be performed in different layers of the protocol stack. In particular, as the medium access control (MAC) layer can access and control the radio directly, large energy savings is possible through intelligent MAC protocol design. To maximize the network lifetime, MAC protocols for WSNs aim to minimize idle listening of the sensor nodes, packet collisions, and overhearing. Several approaches such as duty cycling and low power listening have been proposed at the MAC layer to achieve energy efficiency. In this thesis, I explore the possibility of further energy savings through the advertisement of data packets in the MAC layer. In the first part of my research, I propose Advertisement-MAC or ADV-MAC, a new MAC protocol for WSNs that utilizes the concept of advertising for data contention. This technique lets nodes listen dynamically to any desired transmission and sleep during transmissions not of interest. This minimizes the energy lost in idle listening and overhearing while maintaining an adaptive duty cycle to handle variable loads. Additionally, ADV-MAC enables energy efficient MAC-level multicasting. An analytical model for the packet delivery ratio and the energy consumption of the protocol is also proposed. The analytical model is verified with simulations and is used to choose an optimal value of the advertisement period

  8. Polarized targets in high energy physics

    Energy Technology Data Exchange (ETDEWEB)

    Cates, G.D. Jr. [Princeton Univ., NJ (United States)

    1994-12-01

    Various approaches are discussed for producing polarized nuclear targets for high energy physics experiments. As a unifying theme, examples are drawn from experiments to measure spin dependent structure functions of nucleons in deep inelastic scattering. This single physics goal has, over roughly two decades, been a driving force in advances in target technology. Actual or planned approaches have included solid targets polarized by dynamic nuclear polarization (DNP), several types of internal targets for use in storage rings, and gaseous {sup 3}He targets polarized by spin-exchange optical pumping. This last approach is the type of target adopted for SLAC E-142, an experiment to measure the spin structure function of the neutron, and is described in detail.

  9. Italian Meeting on High Energy Physics

    CERN Document Server

    Nicrosini, Oreste; Vercesi, Valerio; IFAE 2006; Incontri Di Fisica Delle Alte Energie

    2007-01-01

    This book collects the Proceedings of the Workshop ``Incontri di Fisica delle Alte Energie (IFAE) 2006, Pavia, 19-21 April 2006". This is the fifth edition of a new series of meetings on fundamental research in particle physics and was attended by more than 150 researchers. Presentations, both theoretical and experimental, addressed the status of Standard Model and Flavour phyiscs, Neutrino and Cosmological topics, new insights beyond the present understanding of particle physics and cross-fertilization in areas such as medicine, biology, technological spin-offs and computing. Special emphasis was given to the expectations of the forthcoming Large Hadron Collider, due in operation in 2007. The venue of plenary sessions interleaved with parallel ones allowed for a rich exchange of ideas, presented in these Proceedings, that form a coherent picture of the findings and of the open questions in this extremely challenging cultural field.

  10. Anomalous resonance-radiation energy-transfer rate in a scattering dispersive medium

    International Nuclear Information System (INIS)

    Shekhtman, V.L.

    1992-01-01

    This paper describes a generalization of the concept of group velocity as an energy-transfer rate in a dispersive medium with complex refractive index when the polaritons, which are energy carriers, undergo scattering, in contrast to the classical concept of the group velocity of free polaritons (i.e., without scattering in the medium). The concept of delay time from quantum multichannel-scattering, theory is used as the fundamental concept. Based on Maxwell's equations and the new mathematical Φ-function method, a consistent conceptual definition of group velocity in terms of the ratio of the coherent-energy flux density to the coherent-energy density is obtained for the first time, and a critical analysis of the earlier (Brillouin) understanding of energy-transfer rate is given in the light of radiation-trapping theory and the quantum theory of resonance scattering. The role of generalized group velocity is examined for the interpretation of the phenomenon of multiple resonance scattering, or radiation diffusion. The question of causality for the given problem is touched upon; a new relationship is obtained, called the microcausality condition, which limits the anomalous values of group velocity by way of the indeterminacy principle and the relativistic causality principle for macroscopic time intervals directly measurable in experiment, whereby attention is focused on the connection of the given microcausality condition and the well-known Wigner inequality for the time delay of spherical waves. 22 refs

  11. Physics of intense, high energy radiation effects.

    Energy Technology Data Exchange (ETDEWEB)

    Hjalmarson, Harold Paul; Hartman, E. Frederick; Magyar, Rudolph J.; Crozier, Paul Stewart

    2011-02-01

    This document summarizes the work done in our three-year LDRD project titled 'Physics of Intense, High Energy Radiation Effects.' This LDRD is focused on electrical effects of ionizing radiation at high dose-rates. One major thrust throughout the project has been the radiation-induced conductivity (RIC) produced by the ionizing radiation. Another important consideration has been the electrical effect of dose-enhanced radiation. This transient effect can produce an electromagnetic pulse (EMP). The unifying theme of the project has been the dielectric function. This quantity contains much of the physics covered in this project. For example, the work on transient electrical effects in radiation-induced conductivity (RIC) has been a key focus for the work on the EMP effects. This physics in contained in the dielectric function, which can also be expressed as a conductivity. The transient defects created during a radiation event are also contained, in principle. The energy loss lead the hot electrons and holes is given by the stopping power of ionizing radiation. This information is given by the inverse dielectric function. Finally, the short time atomistic phenomena caused by ionizing radiation can also be considered to be contained within the dielectric function. During the LDRD, meetings about the work were held every week. These discussions involved theorists, experimentalists and engineers. These discussions branched out into the work done in other projects. For example, the work on EMP effects had influence on another project focused on such phenomena in gases. Furthermore, the physics of radiation detectors and radiation dosimeters was often discussed, and these discussions had impact on related projects. Some LDRD-related documents are now stored on a sharepoint site (https://sharepoint.sandia.gov/sites/LDRD-REMS/default.aspx). In the remainder of this document the work is described in catergories but there is much overlap between the atomistic

  12. Studies in theoretical high energy particle physics

    International Nuclear Information System (INIS)

    Aratyn, H.; Brekke, L.; Keung, Wai-Yee; Sukhatme, U.

    1993-01-01

    Theoretical work on the following topics is briefly summarized: symmetry structure of conformal affine Toda model and KP hierarchy; solitons in the affine Toda and conformal affine Toda models; classical r-matrices and Poisson bracket structures on infinite-dimensional groups; R-matrix formulation of KP hierarchies and their gauge equivalence; statistics of particles and solitons; charge quantization in the presence of an Alice string; knotting and linking of nonabelian flux; electric dipole moments; neutrino physics in gauge theories; CP violation in the high energy colliders; supersymmetric quantum mechanics; parton structure functions in nuclei; dual parton model. 38 refs

  13. GEM applications outside high energy physics

    CERN Document Server

    Duarte Pinto, Serge

    2013-01-01

    From its invention in 1997, the Gas Electron Multiplier has been applied in nuclear and high energy physics experiments. Over time however, other applications have also exploited the favorable properties of GEMs. The use of GEMs in these applications will be explained in principle and practice. This paper reviews applications in research, beam instrumentation and homeland security. The detectors described measure neutral radiations such as photons, x-rays, gamma rays and neutrons, as well as all kinds of charged radiation. This paper provides an overview of the still expanding range of possibilities of this versatile detector concept.

  14. Application of nanotechnologies in high energy physics

    International Nuclear Information System (INIS)

    Angelucci, R.; Corticelli, F.; Cuffiani, M.; Dallavalle, G.M.; Malferraxi, L.; Montanari, A.; Montanari, C.; Odorici, F.; Rizzoli, R.; Summonte, C.

    2003-01-01

    In the past, the progressive reduction of electronics integration scale has allowed high energy physics experiments to build particle detectors with a high number of sensitive channels and high spatial granularity, down to the micron scale. Nowadays, the increasing effort towards nanoelectronics and progresses in various fields of nanotechnologies, suggests that the time for nanodetectors is not far to come. As an example of possible application of nanotechnologies in HEP, we present results on fabrication of nanochannel matrices in anodic porous alumina as a template for preparing an array of carbon nanotubes, which we believe can be a promising building block in developing particle detectors with high spatial resolution

  15. New results in high-energy physics

    International Nuclear Information System (INIS)

    Bohm, G.

    1986-01-01

    Recent results are presented in a simple manner in the field of high energy physics starting with characteristics and properties of elementary particles and their basic types of interaction. The substructure of hadrons is interpreted with reference to the quark model. Gauge field theories derived for description of the basic interactions are briefly illustrated (e.g. quantum electrodynamics and quantum chromodynamics as theories of electromagnetic and strong interactions, respectively). Attempts are discussed to unify all basic interactions in one field theory. Thus, the Weinberg-Salam-Model has been created as generalized unified theory of weak and electromagnetic interactions

  16. Reclustering of high energy physics data

    CERN Document Server

    Schaller, M

    1999-01-01

    The coming high energy physics experiments will store Petabytes of data into object databases. Analysis jobs will frequently traverse collections containing millions of stored objects. Clustering is one of the most effective means $9 to enhance the performance of these applications. The paper presents a reclustering algorithm for independent objects contained in multiple possibly overlapping collections on secondary storage. The algorithm decomposes the stored $9 objects into a number of independent chunks and then maps these chunks to a traveling salesman problem. Under a set of realistic assumptions, the number of disk seeks is reduced almost to the theoretical minimum. Experimental results $9 obtained from a prototype are included. (17 refs).

  17. Data Preservation in High Energy Physics

    CERN Document Server

    Mount, Richard; Le Diberder, Francois; Dubois-Felsmann, Gregory; Neal, Homer; Bellis, Matt; Boehnlein, Amber; Votava, Margaret; White, Vicky; Wolbers, Stephen; Konigsberg, Jacobo; Roser, Robert; Snider, Rick; Lucchesi, Donatella; Denisov, Dmitri; Soldner-Rembold, Stefan; Li, Qizhong; Varnes, Erich; Jonckheere, Alan; Gasthuber, Martin; Gülzow, Volker; Kemp, Yves; Ozerov, Dmitri; Diaconu, Cristinel; South, David; Lobodzinski, Bogdan; Olsson, Jan; Haas, Tobias; Wrona, Krzysztof; Szuba, Janusz; Schnell, Gunar; Sasaki, Takashi; Katayama, Nobu; Hernandez, Fabio; Mele, Salvatore; Holzner, Andre; Hemmer, Frederic; Schroeder, Matthias; Barring, Olof; Brun, Rene; Maggi, Marcello; Igo-Kemenes, Peter; Van Wezel, Jos; Heiss, Andreas; Chen, Gang; Wang, Yifang; Asner, David; Riley, Daniel; Corney, David; Gordon, John

    2009-01-01

    Data from high-energy physics (HEP) experiments are collected with significant financial and human effort and are mostly unique. At the same time, HEP has no coherent strategy for data preservation and re-use. An inter-experimental Study Group on HEP data preservation and long-term analysis was convened at the end of 2008 and held two workshops, at DESY (January 2009) and SLAC (May 2009). This document is an intermediate report to the International Committee for Future Accelerators (ICFA) of the reflections of this Study Group.

  18. Particle identification methods in High Energy Physics

    Energy Technology Data Exchange (ETDEWEB)

    Va' Vra, J.

    2000-01-27

    This paper deals with two major particle identification methods: dE/dx and Cherenkov detection. In the first method, the authors systematically compare existing dE/dx data with various predictions available in the literature, such as the Particle Data group recommendation, and judge the overall consistency. To my knowledge, such comparison was not done yet in a published form for the gaseous detectors used in High-Energy physics. As far as the second method, there are two major Cherenkov light detection techniques: the threshold and the Ring imaging methods. The authors discuss the recent trend in these techniques.

  19. Examples from P2 and energy assessments at small to medium size manufacturers

    International Nuclear Information System (INIS)

    Fleischman, M.; Watters, J.C.; Cobourn, W.G.; Collins, D.J.

    1996-01-01

    Using engineering student-faculty teams, the U.S. Department of energy sponsored industrial assessment center (IAC) at the university of louisville does free pollution prevention and energy assessments at small to medium size manufacturers (SIC 20-39) in kentucky and indiana. Each client plant must meet three of the following four criteria: Annual energy bills less than $1, 750, 000 and more than $50, 00. Gross annual sales of less than $75 million. Less than 500 employees. Lack a dedicated energy/waste engineer. Lack of in-house staff to perform these analyses. The program criteria and assessment procedures are briefly described and summaries of assessment at a sheet fed offset (lithographic) printing plant and 2 denim jeans pre washing plants are presented. 4 figs., 8 tabs

  20. RF System Requirements for a Medium-Energy Electron-Ion Collider (MEIC) at JLab

    International Nuclear Information System (INIS)

    JLab is studying options for a medium energy electron-ion collider that could fit on the JLab site and use CEBAF as a full-energy electron injector. A new ion source, linac and booster would be required, together with collider storage rings for the ions and electrons. In order to achieve the maximum luminosity these will be high-current storage rings with many bunches. We present the high-level RF system requirements for the storage rings, ion booster ring and high-energy ion beam cooling system, and describe the technology options under consideration to meet them. We also present options for staging that might reduce the initial capital cost while providing a smooth upgrade path to a higher final energy. The technologies under consideration may also be useful for other proposed storage ring colliders or ultimate light sources.

  1. Smart Aquarium as Physics Learning Media for Renewable Energy

    Science.gov (United States)

    Desnita, D.; Raihanati, R.; Susanti, D.

    2018-04-01

    Smart aquarium has been developed as a learning media to visualize Micro Hydro Power Generator (MHPG). Its used aquarium water circulation system and Wind Power Generation (WPG) which generated through a wheel as a source. Its also used to teach about energy changes, circular motion and wheel connection, electromagnetic impact, and AC power circuit. The output power and system efficiency was adjusted through the adjustment of water level and wind speed. Specific targets in this research are: to achieved: (i) develop green aquarium technology that’s suitable to used as a medium of physics learning, (ii) improving quality of process and learning result at a senior high school student. Research method used development research by Borg and Gall, which includes preliminary studies, design, product development, expert validation, and product feasibility test, and vinalisation. The validation test by the expert states that props feasible to use. Limited trials conducted prove that this tool can improve students science process skills.

  2. High energy physics in cosmic rays

    Energy Technology Data Exchange (ETDEWEB)

    Jones, Lawrence W. [University of Michigan, Ann Arbor, Michigan (United States)

    2013-02-07

    In the first half-century of cosmic ray physics, the primary research focus was on elementary particles; the positron, pi-mesons, mu-mesons, and hyperons were discovered in cosmic rays. Much of this research was carried out at mountain elevations; Pic du Midi in the Pyrenees, Mt. Chacaltaya in Bolivia, and Mt. Evans/Echo Lake in Colorado, among other sites. In the 1960s, claims of the observation of free quarks, and satellite measurements of a significant rise in p-p cross sections, plus the delay in initiating accelerator construction programs for energies above 100 GeV, motivated the Michigan-Wisconsin group to undertake a serious cosmic ray program at Echo Lake. Subsequently, with the succession of higher energy accelerators and colliders at CERN and Fermilab, cosmic ray research has increasingly focused on cosmology and astrophysics, although some groups continue to study cosmic ray particle interactions in emulsion chambers.

  3. Maximal Entanglement in High Energy Physics

    Directory of Open Access Journals (Sweden)

    Alba Cervera-Lierta, José I. Latorre, Juan Rojo, Luca Rottoli

    2017-11-01

    Full Text Available We analyze how maximal entanglement is generated at the fundamental level in QED by studying correlations between helicity states in tree-level scattering processes at high energy. We demonstrate that two mechanisms for the generation of maximal entanglement are at work: i $s$-channel processes where the virtual photon carries equal overlaps of the helicities of the final state particles, and ii the indistinguishable superposition between $t$- and $u$-channels. We then study whether requiring maximal entanglement constrains the coupling structure of QED and the weak interactions. In the case of photon-electron interactions unconstrained by gauge symmetry, we show how this requirement allows reproducing QED. For $Z$-mediated weak scattering, the maximal entanglement principle leads to non-trivial predictions for the value of the weak mixing angle $\\theta_W$. Our results are a first step towards understanding the connections between maximal entanglement and the fundamental symmetries of high-energy physics.

  4. The basic problems of high energy physics

    International Nuclear Information System (INIS)

    Arbuzov, B.A.

    1983-01-01

    The basic problems of high energy physics are considered. The present-day consideration on elementary particle interactions is shown. The important problem of strong interactions is to find out the nature of forces between quarks. In the superhigh energy range in collisions of particles and nuclei production of quark-gluon plasma is predicted. The studies of plasma parameters will allow to find out the details of quark and gluon interactions. In the range of weak and electromagnetic interactions the impoptance of detection of W- and Z-bosons, Higgs bosons and search for neutrino oscillations is shown. It is also shown that further development of the superunification theory and investigations of the quark and lepton structure is of great importance

  5. Intermediate/high energy nuclear physics

    International Nuclear Information System (INIS)

    Vary, J.P.

    1992-01-01

    Progress during the last year is reviewed under the following topics: relativistic hadron--nucleus and nucleus--nucleus collisions (heavy meson production, photon production and fragmentation functions--direct photon production with the QCM and photon fragmentation functions, Cronin efffect and multiple scattering, effective nuclear parton distributions); solving quantum field theories in nonperturbative regime; light-front dynamics and high-spin states (soft form factor of the pion and nucleon for transverse and longitudinal momentum transfers, light front spinors for high-spin objects); high-energy spin physics; relativistic wave equations, quarkonia, and e + e - resonances; associated production of Higgs boson at collider energies, and microscopic nuclear many-body theory and reactions. 135 refs

  6. Development of a Telescope for Medium-Energy Gamma-ray Astronomy

    Science.gov (United States)

    Sunter, Stan

    2012-01-01

    Since the launch of AGILE and FERMI, the scientific progress in high-energy (Eg greater than approximately 200 MeV) gamma-ray science has been, and will continue to be dramatic. Both of these telescopes cover a broad energy range from approximately 20 MeV to greater than 10 GeV. However, neither instrument is optimized for observations below approximately 200 MeV where many astrophysical objects exhibit unique, transitory behavior, such as spectral breaks, bursts, and flares. Hence, while significant progress from current observations is expected, there will nonetheless remain a significant sensitivity gap in the medium-energy (approximately 0.1-200 MeV) regime; the lower end of this range remains largely unexplored whereas the upper end will allow comparison with FERMI data. Tapping into this unexplored regime requires significant improvements in sensitivity. A major emphasis of modern detector development, with the goal of providing significant improvements in sensitivity in the medium-energy regime, focuses on high-resolution electron tracking. The Three-Dimensional Track Imager (3-DTI) technology being developed at GSFC provides high resolution tracking of the electron-positron pair from gamma-ray interactions from 5 to 200 MeV. The 3-DTI consists of a time projection chamber (TPC) and 2-D cross-strip microwell detector (MWD). The low-density and homogeneous design of the 3-DTI, offers unprecedented sensitivity by providing angular resolution near the kinematic limit. Electron tracking also enables measurement of gamma-ray polarization, a new tool to study astrophysical phenomenon. We describe the design, fabrication, and performance of a 30x30x30 cm3 3-DTI detector prototype of a medium-energy gamma-ray telescope.

  7. Conference summary on new trends in high-energy physics

    International Nuclear Information System (INIS)

    Terazawa, H.

    2001-01-01

    Concluding remarks on over forty papers contributed to the International Conference on New Trends in High-Energy Physics, Yalta, Crimea, Ukraine, September 22 - 29, 2001 are presented. Also presented are some comments on future prospects in high energy physics

  8. Utilization of industrial dairy waste as microalgae cultivation medium : a potential study for sustainable energy resources

    Science.gov (United States)

    Nurmayani, S.; Sugiarti, Y.; Putra, R. H.

    2016-04-01

    Microalgae is one of biodiesel resources and call as third generation biofuel. Biodiesel is one alternative energy that being developed. So study about resource of biodiesel need a development, for the example is development the basic material such as microalgae. In this paper we explain the potential use of dairy waste from industry as a cultivation medium of microalgae for biodiesel production. Dairy waste from dairy industry contains 34.98% protein, 4.42% lactose, 9.77% fiber, 11.04% fat, 2.33% calcium, 1.05% phosfor, and 0.4 % magnesium, meaning that the dairy waste from dairy industry has a relatively high nutrient content and complete from a source of carbon, nitrogen and phosphorus as macro nutrients. The method in this paper is literature review to resulting a new conclusion about the potency of waste water from dairy industry as microalgae cultivation medium. Based on the study, the dairy waste from dairy industry has potency to be used as cultivation medium of Botryococcus braunii in the production of biodiesel, replacing the conventional cultivation medium.

  9. GRID computing for experimental high energy physics

    International Nuclear Information System (INIS)

    Moloney, G.R.; Martin, L.; Seviour, E.; Taylor, G.N.; Moorhead, G.F.

    2002-01-01

    Full text: The Large Hadron Collider (LHC), to be completed at the CERN laboratory in 2006, will generate 11 petabytes of data per year. The processing of this large data stream requires a large, distributed computing infrastructure. A recent innovation in high performance distributed computing, the GRID, has been identified as an important tool in data analysis for the LHC. GRID computing has actual and potential application in many fields which require computationally intensive analysis of large, shared data sets. The Australian experimental High Energy Physics community has formed partnerships with the High Performance Computing community to establish a GRID node at the University of Melbourne. Through Australian membership of the ATLAS experiment at the LHC, Australian researchers have an opportunity to be involved in the European DataGRID project. This presentation will include an introduction to the GRID, and it's application to experimental High Energy Physics. We will present the results of our studies, including participation in the first LHC data challenge

  10. Grid computing in high-energy physics

    International Nuclear Information System (INIS)

    Bischof, R.; Kuhn, D.; Kneringer, E.

    2003-01-01

    Full text: The future high energy physics experiments are characterized by an enormous amount of data delivered by the large detectors presently under construction e.g. at the Large Hadron Collider and by a large number of scientists (several thousands) requiring simultaneous access to the resulting experimental data. Since it seems unrealistic to provide the necessary computing and storage resources at one single place, (e.g. CERN), the concept of grid computing i.e. the use of distributed resources, will be chosen. The DataGrid project (under the leadership of CERN) develops, based on the Globus toolkit, the software necessary for computation and analysis of shared large-scale databases in a grid structure. The high energy physics group Innsbruck participates with several resources in the DataGrid test bed. In this presentation our experience as grid users and resource provider is summarized. In cooperation with the local IT-center (ZID) we installed a flexible grid system which uses PCs (at the moment 162) in student's labs during nights, weekends and holidays, which is especially used to compare different systems (local resource managers, other grid software e.g. from the Nordugrid project) and to supply a test bed for the future Austrian Grid (AGrid). (author)

  11. Intercomparison of medium-energy neutron attenuation in iron and concrete

    International Nuclear Information System (INIS)

    Hirayama, H.

    1999-01-01

    Neutron attenuation of medium energy below 1 GeV has not been well understood until now. It is desired to obtain common agreements concerning the behaviours of neutrons inside various materials. This is necessary in order to agree on definitions of the attenuation length, which is very important for shielding calculations involving high energy accelerators. As one attempt, it was proposed by Japanese attendants of SATIF-2 to compare the attenuation of medium-energy neutrons inside iron and concrete shields between various computer codes and data, and was cited as a suitable action for SATIF. The first results from three groups were presented at SATIF-3. It has become clear that neutrons above 20 MeV are important for understanding the attenuation inside materials and that the geometry, planar or spherical, does not affect the results very much. Considering the CPU times required for Monte Carlo calculations and this result, revised problems to be calculated were prepared by the Japanese Working Group and sent to the participants of this action. The geometry is only plane, and calculations are required only for neutrons above 20 MeV. The secondary neutrons from high energy protons, which were calculated by H. Nakashima, are also included in the problem. The results from four groups were sent to the organizer at the end of August. This paper presents a comparison between groups concerning the attenuation length together with the neutron spectrum and the future themes which come from this intercomparison. (author)

  12. Simulating the formation and evolution of galaxies: multi-phase description of the interstellar medium, star formation, and energy feedback

    Science.gov (United States)

    Merlin, E.; Chiosi, C.

    2007-10-01

    Context: Modelling the gaseous component of the interstellar medium (ISM) by Smoothed Particles Hydrodynamics in N-Body simulations (NB-TSPH) is still very crude when compared to the complex real situation. In the real ISM, many different and almost physically decoupled components (phases) coexist for long periods of time, and since they spread over wide ranges of density and temperature, they cannot be correctly represented by a unique continuous fluid. This would influence star formation which is thought to take place in clumps of cold, dense, molecular clouds, embedded in a warmer, neutral medium, that are almost freely moving throughout the tenuous hot ISM. Therefore, assuming that star formation is simply related to the gas content without specifying the component in which this is both observed and expected to occur may not be physically sound. Aims: We consider a multi-phase representation of the ISM in NB-TSPH simulations of galaxy formation and evolution with particular attention to the case of early-type galaxies. Methods: Cold gas clouds are described by the so-called sticky particles algorithm. They can freely move throughout the hot ISM medium; stars form within these clouds and the mass exchange among the three baryonic phases (hot gas, cold clouds, stars) is governed by radiative and Compton cooling and energy feedback by supernova (SN) explosions, stellar winds, and UV radiation. We also consider thermal conduction, cloud-cloud collisions, and chemical enrichment. Results: Our model agrees with and improves upon previous studies on the same subject. The results for the star formation rate agree with recent observational data on early-type galaxies. Conclusions: These models lend further support to the revised monolithic scheme of galaxy formation, which has recently been strengthened by high redshift data leading to the so-called downsizing and top-down scenarios.

  13. Using REDUCE in high energy physics

    International Nuclear Information System (INIS)

    Grozin, A.G.

    1997-01-01

    This book describes the use of the symbolic manipulation language REDUCE in particle physics. There are several general purpose mathematics packages available to physicists, including Mathematica, Maple, and REDUCE. Each has advantages and disadvantages, but REDUCE has been found to be both powerful and convenient in solving a wide range of problems. This book introduces the reader to REDUCE and demonstrates its utility as a mathematical tool in physics. The first chapter of the book describes the REDUCE system, including some library packages. The following chapters show the use of REDUCE in examples from classical mechanics, hydrodynamics, general relativity, and quantum mechanics. The rest of the book systematically presents the Standard Model of particle physics (QED, weak interactions, QCD). A large number of scattering and decay processes are calculated with REDUCE. All example programs from the book can be downloaded via Internet. The emphasis throughout is on learning through worked examples. This will be an essential introduction and reference for high energy and theoretical physicists. (author)

  14. Department of High Energy Physics: Overview

    International Nuclear Information System (INIS)

    Bialkowska, H.

    2001-01-01

    Full text:The activities of the Department of High Energy Physics are centered around experiments performed at accelerators in the following laboratories: At CERN, the European Laboratory for Particle Physics in Geneva, Switzerland: - DELPHI at LEP e + e - storage ring is concerned mainly with the tests of the Standard Model, b-quark physics, gamma-gamma interactions and search for Higgs boson and supersymmetric particles; - NA48 - studies of the CP-violation and rare K 0 decays; - SMC - Spin Muon Collaboration is investigating the spin dependent nucleon structure functions and the gluon role in the nucleon spin; - NA49 and WA98 deal with heavy ion physics looking for possible effects of the phase transition in the quark-gluon plasma state. At CELSIUS Storage Ring in Uppsala, Sweden: - WASA - a precise study of near threshold production of light mesons, and their decays. At DESY in Hamburg, Germany: - ZEUS - deep inelastic scattering of electrons and protons, proton structure functions, diffractive photon-proton interactions. The groups of our Department participated in the construction phase of the experiments, both in hardware and in development of the software used in data analysis. Presently they take part in the data collection, detector performance supervision and data analysis. The Department is also actively involved in the preparation of new experiments: - CMS (Compact Muon Solenoid) and LHCb (b-quark production and CP-violation) at the LHC (Large Hadron Collider) at CERN; - ALICE - experiment to study the heavy ion interactions at the LHC; - COMPASS (Compact Muon and Proton Apparatus for Structure and Spectroscopy) at the SPS at CERN; - WASA- 4π - commissioning of a new version of the WASA detector at CELSIUS in Uppsala; - study of charge exchange processes in d-p collisions at Nuclotron in Dubna. A small mechanical workshop is attached to our Department. It is involved in the preparation of the COMPASS experiment and participated in the construction of

  15. Department of High Energy Physics: Overview

    International Nuclear Information System (INIS)

    Bialkowska, H.

    2002-01-01

    Full text:The activities of the Department of High Energy Physics are centered around experiments performed at accelerators in the following laboratories: * At CERN, the European Laboratory for Particle Physics in Geneva, Switzerland: - DELPHI at LEP e + e - storage ring - the tests of the Standard Model, b-quark physics, gamma-gamma interactions and search for Higgs boson and supersymmetric particles - NA48 - the CP-violation and rare K 0 decays - COMPASS (Compact Muon and Proton Apparatus for Structure and Spectroscopy) - studies the gluon polarization in the nucleon - NA49 and WA98 - heavy ion physics, looking for possible effects of the phase transition to the quark-gluon plasma state. * At CELSIUS Storage Ring in Uppsala, Sweden: - WASA - a precise study of near threshold resonance production. * At DESY in Hamburg, Germany: - ZEUS - deep inelastic scattering of electrons and protons, proton structure functions, diffractive photon-proton interactions. * Super-Kamiokande and Icarus - neutrino mass and oscillations study. The groups of our Department participated in the construction phase of the experiments, both in hardware and in development of the software used in data analysis. Presently they take part in the data collection, detector performance supervision and data analysis. The Department is also actively involved in the preparation of new experiments: - CMS (Compact Muon Solenoid) at the LHC, - LHCb (b-quark production and CP-violation) at the LHC (Large Hadron Collider) at CERN, - ALICE - experiment to study the heavy ion interactions at the LHC, - ICARUS - tests of a liquid argon TPC, in preparation, for neutrino beam (CERN to Gran Sasso), and to be used for cosmic neutrino detection, - study of charge exchange processes in d-p collisions at Nuclotron in Dubna. A mechanical workshop attached to our Department, participated in the construction of the prototypes for the alignment monitoring system for the Outer Tracker detector in the LHCb experiment. Now

  16. Department of High Energy Physics: Overview

    International Nuclear Information System (INIS)

    Bialkowska, H.

    2003-01-01

    Full text: The activities of the Department of High Energy Physics are centered around experiments performed at accelerators in the following laboratories: - At CERN, the European Laboratory for Particle Physics in Geneva, Switzerland: - DELPHI at LEP e + e - storage ring - the tests of the Standard Model, b-quark physics, gamma-gamma interactions and search for Higgs boson and supersymmetric particles - NA48 - - the CP-violation and rare K 0 decays - COMPASS (Compact Muon and Proton Apparatus for Structure and Spectroscopy) - studies the gluon polarization in the nucleon - NA49 and WA98 - heavy ion physics, looking for possible effects of the phase transition to the quark-gluon plasma state. - At CELSIUS Storage Ring in Uppsala, Sweden: - WASA - a precise study of near threshold resonance production. - At DESY in Hamburg, Germany: - ZEUS - deep inelastic scattering of electrons and protons, proton structure functions, diffractive photon-proton interactions. - Super-Kamiokande and Icarus - neutrino mass and oscillation studies. The groups of our Department participated in the construction phase of the experiments, both in hardware and in the development of the software used in data analysis. Presently they take part in data collection, detector performance supervision and data analysis. The Department is also involved in the preparation of new experiments: - CMS (Compact Muon Solenoid) at the LHC, - LHCb (b-quark production and CP-violation) at the LHC (Large Hadron Collider) at CERN, - ALICE - experiment to study the heavy ion interactions at the LHC, - ICARUS - tests of a liquid argon TPC, in preparation, for neutrino beam (CERN to Gran Sasso), and to be used for cosmic neutrino detection, - the study of charge exchange processes in d-p collisions at Nuclotron in Dubna. A mechanical workshop attached to our Department participated in the construction of the prototypes for the alignment monitoring system for the Outer Tracker detector in the LHCb experiment. Now a

  17. Department of High Energy Physics: Overview

    International Nuclear Information System (INIS)

    Bialkowska, H.

    2004-01-01

    Full text: The activities of the Department of High Energy Physics are centered around experiments performed at accelerators in the following laboratories: - At CERN, the European Laboratory for Particle Physics in Geneva, Switzerland: - DELPHI at LEP e + e - storage ring - the tests of the Standard Model, b-quark physics, gamma-gamma interactions and search for Higgs boson and supersymmetric particles; - NA4B - the CP-violation and rare K 0 decays; - COMPASS (Compact Muon and Proton Apparatus for Structure and Spectroscopy) - studies the gluon polarization in the nucleon; - NA49 and WA98 - heavy ion physics, looking for possible effects of the phase transition to the quark-gluon plasma state. At CELSIUS Storage Ring in Uppsala, Sweden: - WASA - a precise study of near threshold resonance production. - At RHIC - study of pp elastic scattering. - At DESY in Hamburg, Germany: - ZEUS - deep inelastic scattering of electrons and protons, proton structure functions, diffractive photon-photon interactions. - Super-Kamiokande and K2 K - a study of neutrino oscillations. The groups from our Department participated in the construction phase of the experiments, both in hardware and in development of the software used in data analysis. Presently they take part in the data collection, detector performance supervision and data analysis. The Department is also involved in the preparation of new experiments: - search for optical flashes of cosmic origin: ''π of the sky'' project - search for optical counterparts of γ ray bursts, - CMS (Compact Muon Solenoid) at the LHC, - LHCb (b-quark production and CP-violation) at the LHC (Large Hadron Collider) at CERN, - ALICE - experiment to study the heavy ion interactions at the LHC, - ICARUS - tests of a liquid argon TPC, in preparation for neutrino beam (CERN to Gran Sasso), and to be used for cosmic neutrino detection, - study of charge exchange processes in d-p collisions at Nuclotron in Dubna. A mechanical workshop attached to our

  18. Department of High Energy Physics: Overview

    International Nuclear Information System (INIS)

    Nassalski, J.

    2000-01-01

    Full text: The activities of the Department of High Energy Physics are centered around experiments performed at accelerators in the following laboratories: 1. At CERN, the European Laboratory for Particle Physics in Geneva, Switzerland: - DELPHI at LEP e + e - storage ring is concerned mainly with the tests of the Standard Model, b-quark physics, gamma-gamma interactions and search for Higgs boson and supersymmetric particles; - NA48 - studies of the CP-violation in rare K 0 decays; - SMC - Spin Muon Collaboration is investigating the spin dependent nucleon structure functions and the gluon role in the nucleon spin; - NA49 and WA98 deal with heavy ion physics looking for possible effects of the phase transition to the quark-gluon plasma state. 2. At CELSIUS Storage Ring in Uppsala, Sweden: - WASA - the production of light mesons near threshold and their rare decays. 3. At DESY in Hamburg, Germany: - ZEUS - deep inelastic scattering of electrons and protons, proton structure functions, diffractive photon-proton interactions. The groups of our Department participated in the construction phase of the experiments, both in hardware and in development of the software used in data analysis. Presently they take part in the data acquisition, detector performance supervision and data analysis. The Department is also actively involved in the preparation of new experiments: - CMS (Compact Muon Solenoid) and LHCb (b-quark production and CP-violation) at the LHC (Large Hadron Collider) at CERN, - ALICE - experiment to study the heavy ion interactions at the LHC, - COMPASS (Compact Muon and Proton Apparatus for Structure and Spectroscopy) at the SPS at CERN, - WASA-Promice - a new version of the WASA detector at CELSIUS in Uppsala, - relativistic hyperfragment production experiment in Dubna, Russia. A small mechanical workshop is attached to our Department. It is involved in the preparation of the COMPASS experiment and participated in the construction of the WASA - Promice

  19. [Experimental and theoretical high energy physics

    International Nuclear Information System (INIS)

    Boulware, D.

    1988-01-01

    We are carrying out a research program in high energy experimental particle physics. Studies of high energy hadronic interactions and leptoproduction processes continue using several experimental techniques. Progress has been made on the study of multiparticle production processes in nuclei. Ultra-high energy cosmic ray nucleus-nucleus interactions have been investigated by the Japanese American Cosmic Emulsion Experiment (JACEE) using balloon-borne emulsion chamber detectors. In the area of particle astrophysics, our studies of cosmic ray nuclear interactions have enabled us to make the world's most accurate determination of the composition of the cosmic rays above 10 13 eV. We have the only detector that can observe interaction vertices and identify particles at energies up to 10--15 eV. Our observations are getting close to placing limits on the acceleration mechanisms postulated for pulsars in which the spin and magnetic moment axes are at different angles. In June, 1989 approval was given by NASA for our participation in the Space Station program. The SCINATT experiment will make use of emulsion chamber detectors, similar to the planned JACEE hybrid balloon flight detectors. These detectors will permit precise determination of secondary particle charges, momenta and rapidities, and the accumulation of data will be at least a factor of 10 to 100 greater than in balloon experiments. Emulsion chamber techniques are also employed in an experiment using accelerator heavy ion beams at CERN and Brookhaven National Laboratory to investigate particle production processes in central collisions of nuclei in the energy range 15--200A GeV. Our study of hadroproduction in lepton interactions is continuing with approval of another 8 months run for deep inelastic muon scattering experiment E665 at Fermilab

  20. High energy particle physics in the United Kingdom

    International Nuclear Information System (INIS)

    1985-06-01

    The paper reviews the U.K. participation in High Energy Particle Physics (HEPP) research. The funding of science in Higher Education and the Research Councils; high energy particle physics; relevance of particle physics to science and technology; particle physics in the U.K.; CERN; and the opportunity cost of HEPP within the science budget; are all discussed. (U.K.)

  1. 1996 European school of high-energy physics. Proceedings

    International Nuclear Information System (INIS)

    Ellis, N.; Neubert, M.

    1997-01-01

    The European School of High-Energy Physics is intended to give young experimental physicists an introduction to the theoretical aspects of recent advances in elementary particle physics. These proceedings contain lectures on Field Theory, Physics Beyond the Standard Model, Flavour Physics, Neutrino Physics, Collider Physics and Astrophysics, as well as reports on Heavy-Ion Physics, the Large Hadron Collider Project and Physics in JINR/Russia. (orig.)

  2. Frontiers for Discovery in High Energy Density Physics

    Energy Technology Data Exchange (ETDEWEB)

    Davidson, R. C.; Katsouleas, T.; Arons, J.; Baring, M.; Deeney, C.; Di Mauro, L.; Ditmire, T.; Falcone, R.; Hammer, D.; Hill, W.; Jacak, B.; Joshi, C.; Lamb, F.; Lee, R.; Logan, B. G.; Melissinos, A.; Meyerhofer, D.; Mori, W.; Murnane, M.; Remington, B.; Rosner, R.; Schneider, D.; Silvera, I.; Stone, J.; Wilde, B.; Zajc. W.

    2004-07-20

    The report is intended to identify the compelling research opportunities of high intellectual value in high energy density physics. The opportunities for discovery include the broad scope of this highly interdisciplinary field that spans a wide range of physics areas including plasma physics, laser and particle beam physics, nuclear physics, astrophysics, atomic and molecular physics, materials science and condensed matter physics, intense radiation-matter interaction physics, fluid dynamics, and magnetohydrodynamics

  3. Oklahoma Center for High Energy Physics (OCHEP)

    Energy Technology Data Exchange (ETDEWEB)

    Nandi, S; Strauss, M J; Snow, J; Rizatdinova, F; Abbott, B; Babu, K; Gutierrez, P; Kao, C; Khanov, A; Milton, K A; Neaman, H; H Severini, P Skubic

    2012-02-29

    The DOE EPSCoR implementation grant, with the support from the State of Oklahoma and from the three universities, Oklahoma State University, University of Oklahoma and Langston University, resulted in establishing of the Oklahoma Center for High Energy Physics (OCHEP) in 2004. Currently, OCHEP continues to flourish as a vibrant hub for research in experimental and theoretical particle physics and an educational center in the State of Oklahoma. All goals of the original proposal were successfully accomplished. These include foun- dation of a new experimental particle physics group at OSU, the establishment of a Tier 2 computing facility for the Large Hadron Collider (LHC) and Tevatron data analysis at OU and organization of a vital particle physics research center in Oklahoma based on resources of the three universities. OSU has hired two tenure-track faculty members with initial support from the grant funds. Now both positions are supported through OSU budget. This new HEP Experimental Group at OSU has established itself as a full member of the Fermilab D0 Collaboration and LHC ATLAS Experiment and has secured external funds from the DOE and the NSF. These funds currently support 2 graduate students, 1 postdoctoral fellow, and 1 part-time engineer. The grant initiated creation of a Tier 2 computing facility at OU as part of the Southwest Tier 2 facility, and a permanent Research Scientist was hired at OU to maintain and run the facility. Permanent support for this position has now been provided through the OU university budget. OCHEP represents a successful model of cooperation of several universities, providing the establishment of critical mass of manpower, computing and hardware resources. This led to increasing Oklahoma's impact in all areas of HEP, theory, experiment, and computation. The Center personnel are involved in cutting edge research in experimental, theoretical, and computational aspects of High Energy Physics with the research areas ranging

  4. Perspectives on future high energy physics

    Energy Technology Data Exchange (ETDEWEB)

    Samios, N.P.

    1996-12-31

    The author states two general ways in which one must proceed in an attempt to forecast the future of high energy physics. The first is to utilize the state of knowledge in the field and thereby provide theoretical and experimental guidance on future directions. The second approach is technical, namely, how well can one do in going to higher energies with present techniques or new accelerator principles. He concludes that the future strategy is straightforward. The present accelerator facilities must be upgraded and run to produce exciting and forefront research. At the same time, the theoretical tools should be sharpened both extrapolating from lower energies (100 GeV) to high (multi TeV) and vice versa. The US should be involved in the LHC, both in the accelerator and experimental areas. There should be an extensive R and D program on accelerators for a multi-TeV capability, emphasizing e{sup +}e{sup {minus}} and {mu}{sup +}{mu}{sup {minus}} colliders. Finally, the international cooperative activities should be strengthened and maintained.

  5. Experimental heavy ion physics at high energies

    International Nuclear Information System (INIS)

    1993-01-01

    This report summarizes the research activities of the experimental high energy heavy ion physics group at Vanderbilt University carried out under Grant No. DE-FG05092ER40712 with the Department of Energy during the period Oct 1, 1992 to Nov 30, 1993. This research encompasses four areas of related inquiry in relativistic and high energy nuclear reactions. The preparation of the PHENIX experiment which has been approved as one of the two major experiments at RHIC to start in 1998. The RD10/RD45 Muon Identifier experiment which will provide essential input for the design of the Muon Endcap arm detector sub-system in PHENIX. The E855 Soft Photon Experiment at the AGS designed to clarify the status of a possible quark-gluon-plasma signature with presently available heavy-ion collisions. The construction CsI Ball detector project at Texas A ampersand M which is designed as part of a comprehensive detector system which will probe the nuclear equation of state in the 50 MeV/nucleon domain

  6. Perspectives on future high energy physics

    International Nuclear Information System (INIS)

    Samios, N.P.

    1996-01-01

    The author states two general ways in which one must proceed in an attempt to forecast the future of high energy physics. The first is to utilize the state of knowledge in the field and thereby provide theoretical and experimental guidance on future directions. The second approach is technical, namely, how well can one do in going to higher energies with present techniques or new accelerator principles. He concludes that the future strategy is straightforward. The present accelerator facilities must be upgraded and run to produce exciting and forefront research. At the same time, the theoretical tools should be sharpened both extrapolating from lower energies (100 GeV) to high (multi TeV) and vice versa. The US should be involved in the LHC, both in the accelerator and experimental areas. There should be an extensive R and D program on accelerators for a multi-TeV capability, emphasizing e + e - and μ + μ - colliders. Finally, the international cooperative activities should be strengthened and maintained

  7. Barriers to energy efficiency improvement. Empirical evidence from small-and-medium-sized enterprises in China

    Energy Technology Data Exchange (ETDEWEB)

    Kostka, Genia; Moslener, Ulf; Andreas, Jan G.

    2012-07-01

    This paper analyzes barriers for energy efficiency investments for small-and medium-sized enterprises (SMEs) in China. Based on a survey of 480 SMEs in Zhejiang Province, this study assesses financial, informational, and organizational barriers for energy efficiency investments in the SME sector. The conventional view has been that the lack of appropriate financing mechanisms particularly hinders SMEs to adopt cost-effective energy efficiency measures. As such, closing the financing gap for SMEs is seen as a prerequisite in order to promote energy efficiency in the sector. The econometric estimates of this study, however, suggest that access to information is an important determinant of investment outcomes, while this is less clear with respect to financial and organizational factors. More than 40 percent of enterprises in the sample declared that that they are not aware of energy saving equipments or practices in their respective business area, indicating that there are high transaction costs for SMEs to gather, assess, and apply information about energy saving potentials and relevant technologies. One implication is that the Chinese government may assume an active role in fostering the dissemination of energy-efficiency related information in the SME sector. (orig.)

  8. Energy conserved and costs saved by small and medium-size manufacturers, 1988--1989

    Energy Technology Data Exchange (ETDEWEB)

    Kirsch, F.W.

    1991-05-01

    Energy Analysis and Diagnostic Centers (EADCs) provided energy-conserving and cost saving assistance in 339 small and medium-size manufacturing plants nationwide during 1988-89. This report presents the results of what was recommended to those manufacturers, the record of what was implemented by them, and an analysis of the financial rewards gained by them. It also includes an accounting of the financial returns to the federal government, derived from taxes upon the cost savings, or incremental income, of the manufacturers who implement the EADCs` recommendations. EADCs collect implementation data within a year of the energy audit, and for these results that time period extended through 1990. The EADCs are located at accredited engineering departments of universities and staffed by faculty and students. At present there are 18 EADCs serving manufacturers in 37 states; of these, two were established as a result of the 1989 competition, and five more were chosen competitively in 1990. Most of the results in this report were generated by 11 EADCs (named in the Appendix); two others withdrew voluntarily after completing only 10 energy audits during 1988-89. Primary responsibility for selecting, training, evaluating, and managing the EADCs belongs to the Industrial Technology and Energy Management (ITEM) division of University City Science Center (UCSC). The Department of Energy`s Office of Industrial Technologies sponsors the EADC program through an agreement with UCSC.

  9. Analysis of Humid Air Turbine Cycle with Low- or Medium-Temperature Solar Energy

    International Nuclear Information System (INIS)

    Hongbin Zhao, H.; Yue, P.; Cao, L.

    2009-01-01

    A new humid air turbine cycle that uses low- or medium-temperature solar energy as assistant heat source was proposed for increasing the mass flow rate of humid air. Based on the combination of the first and second laws of thermodynamics, this paper described and compared the performances of the conventional and the solar HAT cycles. The effects of some parameters such as pressure ratio, turbine inlet temperature (TIT), and solar collector efficiency on humidity, specific work, cycle's exergy efficiency, and solar energy to electricity efficiency were discussed in detail. Compared with the conventional HAT cycle, because of the increased humid air mass flow rate in the new system, the humidity and the specific work of the new system were increased. Meanwhile, the solar energy to electricity efficiency was greatly improved. Additionally, the exergy losses of components in the system under the given conditions were also studied and analyzed.

  10. Progress in the development of global medium-energy nucleon-nucleus optical model potentials

    International Nuclear Information System (INIS)

    Madland, D.G.

    1997-01-01

    Two existing global medium-energy nucleon-nucleus phenomenological optical model potentials are described and compared with experiment and with each other. The first of these employs a Dirac approach (second-order reduction) that is global in projectile energy and projectile isospin and applies to the target nucleus 208 Pb. The second of these employs a relativistic equivalent to the Schroedinger equation (including relativistic kinematics) that is global in projectile energy, projectile isospin, and target (Z,A). Finally, current work is described and the influence of the nuclear bound state problem (treated in relativistic mean field theory) on the Dirac scattering problem is mentioned. Spherical target nuclei are treated in the present work and strongly-collective target nuclei (rotational and vibrational) requiring coupled-channels approaches will be treated in a future paper. (author)

  11. MCNP6 Simulation of Light and Medium Nuclei Fragmentation at Intermediate Energies

    Energy Technology Data Exchange (ETDEWEB)

    Mashnik, Stepan Georgievich [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Kerby, Leslie Marie [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Univ. of Idaho, Moscow, ID (United States)

    2015-08-24

    Fragmentation reactions induced on light and medium nuclei by protons and light nuclei of energies around 1 GeV/nucleon and below are studied with the Los Alamos transport code MCNP6 and with its CEM03.03 and LAQGSM03.03 event generators. CEM and LAQGSM assume that intermediate-energy fragmentation reactions on light nuclei occur generally in two stages. The first stage is the intranuclear cascade (INC), followed by the second, Fermi breakup disintegration of light excited residual nuclei produced after the INC. CEM and LAQGSM account also for coalescence of light fragments (complex particles) up to sup>4He from energetic nucleons emitted during INC. We investigate the validity and performance of MCNP6, CEM, and LAQGSM in simulating fragmentation reactions at intermediate energies and discuss possible ways of further improving these codes.

  12. Intercomparison of the medium energy primary standards for X-ray exposure of NPL and ENEA, Italy

    International Nuclear Information System (INIS)

    Moretti, C.J.; Heaton, J.A.; Laitano, R.F.; Toni, M.P.

    1991-04-01

    An intercomparison between the primary standards of exposure for medium energy X-rays held by the National Physical Laboratory (NPL) and ENEA in Italy is described. The intercomparison, using four different transfer chambers, took place at NPL in December 1989 and at ENEA during March 1990. Measurements were made at four therapy-level qualities, with half value layers of 0.15, 0.5, 1.0 and 2.5 mm Cu (nominal generating voltages of 100, 135, 180 and 250 kV respectively). At the 2.5 mm Cu HVL quality the primary standards were found to agree to within about 0.8%; for the other three qualities the chambers differed by no more than 0.3%. (author)

  13. The physical properties in the interstellar medium of low-metallicity dwarf galaxies

    International Nuclear Information System (INIS)

    Cormier, Diane

    2012-01-01

    In the framework of galaxy evolution, local star-forming dwarf galaxies are ideal laboratories to study star formation processes at low metallicity and the role of metal enrichment on the physical conditions. My thesis has focused on the study of the gas properties of the dwarf galaxies from 'The Herschel Dwarf Galaxy Survey', combining observations and modeling efforts. I have investigated the role of the most important tracers of the multi-phase the interstellar medium (ISM), in the mid-infrared to submillimeter range. Particular attention was paid to the ionized and neutral gas coolants observed with Herschel Space Observatory (e.g. [OIII] 88, [OI] 63, [CII] 157 micron lines), and to the CO molecule, probing the molecular phase, with complementary ground-based observations. The data are interpreted in physical terms (density, radiation field, filling factors) with radiative transfer models. This work has helped elucidate the structure and conditions of the low-metallicity ISM. It highlights the porosity of the ISM of dwarf galaxies, with ultraviolet photons from the massive star-forming regions exciting the gas out to large distances. This results in the presence of large volume filling factor diffuse ionized/neutral gas, clumpy photodissociation regions, and little observed molecular gas due to large-scale photodissociation. (author) [fr

  14. View from Washington: Perspectives on future high energy physics

    International Nuclear Information System (INIS)

    Krebs, M.

    1997-01-01

    This is a talk by Martha Krebs (director of energy research at the U.S. Department of Energy). Funding priorities and the current budget constraints at the Department of Energy are discussed. copyright 1997 American Institute of Physics

  15. Development strategy of green energy industry for Taipei—A modern medium-sized city

    International Nuclear Information System (INIS)

    Lu, Shyi-Min; Huang, May-Yao; Su, Pu-Ti; Tseng, Kuo-Tung; Chen, Falin

    2013-01-01

    Taipei, a subtropical modern medium city, is essentially featured with high population density, scarce land, and large traffic flow. Moreover, there are abundant green energy resources reserved in Taipei. If they were fully developed, there would be 13,040 GWh electricity generated per year, resulting in a total of 9.37 million tons of carbon dioxide emissions abatement. The development of the green energy industry in this city not only can bring significant energy-saving and carbon-reducing benefits, but also may create huge derivative business opportunities. For example, the total output values of the solar PV and electric vehicles industries would be as high as 700 billion yuan. In this study, through Strengths, Weaknesses, Opportunities, and Threats (SWOT) analysis, we concluded that the top priorities for Taipei for the development of green energy industries are building energy conservation and electrified transportation, specifically, the following four items: electric vehicles, Light-Emitting Diode (LED) lighting, inverter air conditioning, and Energy Service Company (ESCO). Meanwhile, Taipei is a domestic and international key of politics, transportation, technology, commerce, and finance. Taipei is very likely to become an internationalized green energy industrial hub, achieving the “3E” goals of economic prosperousness, environmental protection, and energy security. -- Highlights: •Building energy conservation and electrified transportation are top priorities. •SWOT analysis applied to systematically conclude four green energy industrial items for Taipei. •Specifically, electric vehicles, LED lighting, inverter air conditioning, and ESCO. •13,040 GWh electricity would be generated per year from Taipei's rich renewables. •The derivative business opportunities would exceed 700 billion yuan

  16. Computer simulation program for medium-energy ion scattering and Rutherford backscattering spectrometry

    Science.gov (United States)

    Nishimura, Tomoaki

    2016-03-01

    A computer simulation program for ion scattering and its graphical user interface (MEISwin) has been developed. Using this program, researchers have analyzed medium-energy ion scattering and Rutherford backscattering spectrometry at Ritsumeikan University since 1998, and at Rutgers University since 2007. The main features of the program are as follows: (1) stopping power can be chosen from five datasets spanning several decades (from 1977 to 2011), (2) straggling can be chosen from two datasets, (3) spectral shape can be selected as Gaussian or exponentially modified Gaussian, (4) scattering cross sections can be selected as Coulomb or screened, (5) simulations adopt the resonant elastic scattering cross section of 16O(4He, 4He)16O, (6) pileup simulation for RBS spectra is supported, (7) natural and specific isotope abundances are supported, and (8) the charge fraction can be chosen from three patterns (fixed, energy-dependent, and ion fraction with charge-exchange parameters for medium-energy ion scattering). This study demonstrates and discusses the simulations and their results.

  17. High Energy Physics and Nuclear Physics Network Requirements

    Energy Technology Data Exchange (ETDEWEB)

    Dart, Eli; Bauerdick, Lothar; Bell, Greg; Ciuffo, Leandro; Dasu, Sridhara; Dattoria, Vince; De, Kaushik; Ernst, Michael; Finkelson, Dale; Gottleib, Steven; Gutsche, Oliver; Habib, Salman; Hoeche, Stefan; Hughes-Jones, Richard; Ibarra, Julio; Johnston, William; Kisner, Theodore; Kowalski, Andy; Lauret, Jerome; Luitz, Steffen; Mackenzie, Paul; Maguire, Chales; Metzger, Joe; Monga, Inder; Ng, Cho-Kuen; Nielsen, Jason; Price, Larry; Porter, Jeff; Purschke, Martin; Rai, Gulshan; Roser, Rob; Schram, Malachi; Tull, Craig; Watson, Chip; Zurawski, Jason

    2014-03-02

    The Energy Sciences Network (ESnet) is the primary provider of network connectivity for the U.S. Department of Energy (DOE) Office of Science (SC), the single largest supporter of basic research in the physical sciences in the United States. In support of SC programs, ESnet regularly updates and refreshes its understanding of the networking requirements needed by instruments, facilities, scientists, and science programs that it serves. This focus has helped ESnet to be a highly successful enabler of scientific discovery for over 25 years. In August 2013, ESnet and the DOE SC Offices of High Energy Physics (HEP) and Nuclear Physics (NP) organized a review to characterize the networking requirements of the programs funded by the HEP and NP program offices. Several key findings resulted from the review. Among them: 1. The Large Hadron Collider?s ATLAS (A Toroidal LHC Apparatus) and CMS (Compact Muon Solenoid) experiments are adopting remote input/output (I/O) as a core component of their data analysis infrastructure. This will significantly increase their demands on the network from both a reliability perspective and a performance perspective. 2. The Large Hadron Collider (LHC) experiments (particularly ATLAS and CMS) are working to integrate network awareness into the workflow systems that manage the large number of daily analysis jobs (1 million analysis jobs per day for ATLAS), which are an integral part of the experiments. Collaboration with networking organizations such as ESnet, and the consumption of performance data (e.g., from perfSONAR [PERformance Service Oriented Network monitoring Architecture]) are critical to the success of these efforts. 3. The international aspects of HEP and NP collaborations continue to expand. This includes the LHC experiments, the Relativistic Heavy Ion Collider (RHIC) experiments, the Belle II Collaboration, the Large Synoptic Survey Telescope (LSST), and others. The international nature of these collaborations makes them heavily

  18. Probing in-medium spin–orbit interaction with intermediate-energy heavy-ion collisions

    International Nuclear Information System (INIS)

    Xu, Jun; Li, Bao-An

    2013-01-01

    Incorporating for the first time both the spin and isospin degrees of freedom explicitly in transport model simulations of intermediate-energy heavy-ion collisions, we observe that a local spin polarization appears during collision process. Most interestingly, it is found that the nucleon spin up–down differential transverse flow is a sensitive probe of the spin–orbit interaction, providing a novel approach to probe both the density and isospin dependence of the in-medium spin–orbit coupling that is important for understanding the structure of rare isotopes and synthesis of superheavy elements

  19. A wide-range magnetic spectrometer for electron scattering in medium energy range

    International Nuclear Information System (INIS)

    Mao Zhenlin

    1988-01-01

    A non-focusing magnetic spectrometer design for electron scattering in medium energy region is proposed. The positions read out from the position-sensitive detectors in the spectrometer are used for track reconstruction and momentum measurement by means of a computer program. The construction of this spectrometer is simple and there is no special technique and element for correction to aberration. It is suitable for usage of spectrometer with large solid angle and wide momentum range. The momentum resolution, momentum range and acceptance in a practical case are calculated by Monte Carlo simulation

  20. Optimal removal of scattered particles at medium energy storage rings with internal target

    International Nuclear Information System (INIS)

    Steger, U.; Koch, H.R.; Schult, O.W.B.

    1991-01-01

    We have studied at which places projectiles that have been scattered by an internal target out of the acceptance of a medium energy storage ring, can be dumped locally so that the effort for shielding can be minimized. General arguments are given where slits should be installed and their effect on the useful ring acceptance is discussed. In addition we have carried out Monte Carlo simulations for the dispersion-free mode of operation of COSY, which show that ≅ 86% of the lost beam can be removed locally with the use of only two sets of slits. (orig.)

  1. Energy related applications of elementary particle physics

    International Nuclear Information System (INIS)

    Rafelski, J.

    1989-01-01

    Study of muon catalysis of nuclear fusion and phenomena commonly referred to as cold fusion has been central to our effort. Muon catalyzed fusion research concentrated primarily on the identification of energy efficient production of muons, and the understanding and control of the density dependence of auto-poisoning (sticking) of the catalyst. We have also developed the in-flight fusion description of the tμ-d reaction, and work in progress shows promise in explaining the fusion cycle anomalies and smallness of sticking as a consequence of the dominant role of such reactions. Our cold fusion work involved the exploration of numerous environments for cold fusion reactions in materials used in the heavy water electrolysis, with emphasis on reactions consistent with the conventional knowledge of nuclear physics reactions. We then considered the possibility that a previously unobserved ultra-heavy particle X - is a catalyst of dd fusion, explaining the low intensity neutrons observed by Jones et. al. 29 refs

  2. Weakly supervised classification in high energy physics

    Science.gov (United States)

    Dery, Lucio Mwinmaarong; Nachman, Benjamin; Rubbo, Francesco; Schwartzman, Ariel

    2017-05-01

    As machine learning algorithms become increasingly sophisticated to exploit subtle features of the data, they often become more dependent on simulations. This paper presents a new approach called weakly supervised classification in which class proportions are the only input into the machine learning algorithm. Using one of the most challenging binary classification tasks in high energy physics — quark versus gluon tagging — we show that weakly supervised classification can match the performance of fully supervised algorithms. Furthermore, by design, the new algorithm is insensitive to any mis-modeling of discriminating features in the data by the simulation. Weakly supervised classification is a general procedure that can be applied to a wide variety of learning problems to boost performance and robustness when detailed simulations are not reliable or not available.

  3. Monolithic pixel detectors for high energy physics

    CERN Document Server

    Snoeys, W

    2013-01-01

    Monolithic pixel detectors integrating sensor matrix and readout in one piece of silicon have revolutionized imaging for consumer applications, but despite years of research they have not yet been widely adopted for high energy physics. Two major requirements for this application, radiation tolerance and low power consumption, require charge collection by drift for the most extreme radiation levels and an optimization of the collected signal charge over input capacitance ratio ( Q / C ). It is shown that monolithic detectors can achieve Q / C for low analog power consumption and even carryout the promise to practically eliminate analog power consumption, but combining suf fi cient Q / C , collection by drift, and integration of readout circuitry within the pixel remains a challenge. An overview is given of different approaches to address this challenge, with possible advantages and disadvantages.

  4. Dual energy CT. Physical models and applications

    International Nuclear Information System (INIS)

    Sedlmair, Martin Ulrich

    2010-01-01

    Computer tomography (CT) is today a very important non-invasive imaging tool for medical diagnostics. Despite the non-negligible radiation doses of patients and medical personal certain diagnostic questions can only be answered using CT methods. Recent developments adding a second radiation source and a second detector (dual-source CT) allow the imaging the heart beat due to an improved acquisition time. Operation of the X-ray tubes with different voltages (dual-energy) and appropriate data processing methods allow extended information on the tissue composition, pathological structures and improved visualization of lesions. The contribution covers the basic physical background of this technology and is focused on applications, as for instance CT-guided angiography.

  5. Experimental and theoretical high energy physics research

    International Nuclear Information System (INIS)

    Cline, D.B.

    1993-01-01

    Progress on seven tasks is reported. (I)UCLA hadronization model, antiproton decay, PEP4/9 e + e - analysis: In addition to these topics, work on CP and CPT phenomenology at a φ factory and letters of support on the hadronization project are included. (II)ICARUS detector and rare B decays with hadron beams and colliders: Developments are summarized and some typcial events as shown; in addition, the RD5 collaboration at CERN and the asymmetric φ factory project are sketched. (III)Theoretical physics: Feynman diagram calculations in gauge theory; supersymmetric standard model; effects of quantum gravity in breaking of global symmetries; models of quark and lepton substructure; renormalized field theory; large-scale structure in the universe and particle-astrophysics/early universe cosmology. (IV)H dibaryon search at BNL, kaon experiments (E799/KTeV) at Fermilab: Project design and some scatterplots are given. (V)UCLA participation in the experiment CDF at Fermilab. (VI)Detectors for hadron physics at ultrahigh energy colliders: Scintillating fiber and visible light photon counter research. (VII)Administrative support and conference organization

  6. Energy use and carbon dioxide emission of Indonesian small and medium scale industries

    Energy Technology Data Exchange (ETDEWEB)

    Priambodo, A.; Kumar, S. [Asian Inst. of Technology, Pathumthani (Thailand). Energy Program

    2001-07-01

    In Asia, small and medium scale industries (SMIs) form a significant number of establishments contributing to economic growth, stimulating indigenous entrepreneurship, leading to overall development and serving as a training center for developing skills of industrial workers and entrepreneurs. Because of the nature of these enterprises with their inefficient use of energy and other resources, they contribute to local pollution and other environmental problems. Studies on the emission of carbon dioxide (CO{sub 2}) from these industries are few, especially in developing countries. This article presents an estimation of CO{sub 2} emission due to energy (fuel and electricity) consumption in seven SMI sectors in Indonesia. The specific energy consumption and the energy intensity (energy use per value addition) of these sectors have been estimated. Results of the energy use survey and detailed energy audits show that the highest specific fuel consumption is found in the textile industry, followed by the fabricated metal and chemical industries, while the highest specific electricity consumption is found in the fabricated metal industry, followed by the textile and chemical industries. The highest energy intensity among small industry sectors is found in the food and beverages sector. CO{sub 2} emission from the SMI sectors of Indonesia was estimated based on Intergovernmental panel on Climate Change methodology by considering the emission from each audited factory and from the aggregated energy consumption data of the SMI sectors. The textile and fabricated metal industry contribute the highest specific CO{sub 2} emission. The analysis shows that the contribution of liquid fuels to CO{sub 2} emission is very significant in the SMI sector. The overall contribution by the small industrial sector is about 366,000 tons in 1993 compared to about 46 million tons generated by all industrial sectors. (Author)

  7. Proposed activity - Budget for research in high energy physics

    International Nuclear Information System (INIS)

    Barger, V.; Camerini, U.; Carlsmith, D.

    1989-01-01

    This paper contains task reports on the following topics: Hadron physics at Fermilab; Lepton hadron scattering; Electroweak and weak interactions at the Stanford Linear Accelerator Center; Hyperon beam program/hadroproduction of heavy flavors at Fermilab; High energy physics colliding beam detector facility at Fermilab; Data analysis facility; Institute for Elementary Particle Physics research; Study of weak and electromagnetic interactions at Desy and Cern; Theoretical high energy physics; Dumand; and Ultra high energy gamma rays

  8. RECOMMENDATIONS FOR ACHIEVING MEDIUM- AND HIGH-INTENSITY PHYSICAL / SPORT ACTIVITY IN PHYSICAL EDUCATION TO IMPROVE THE HEALTH AND LEARNING OF CHILDREN AND ADOLESCENTS

    Directory of Open Access Journals (Sweden)

    Bostjan Šimunič

    2016-01-01

    Full Text Available The world faces an epidemic of general physical inactivity, impeding the achievement of a sufficient level of medium- and high-intensity physical / sport activities (P / SA. Never in human history were people less physically active than they are now, both at work and in their free time. The most problematic seem to be children and adolescents whose level of P / SA decreases and is not sufficient for maintaining health. School plays an important role in ensuring sufficient and quality P / SA. Physical education is a key period during school when students can be physically active. Consequently, policy makers and moderators of strategies in the field of movement, health and sport should strive to develop the appropriate curriculum and strategies for increasing the volume, intensity and quality of P / SA during physical education. Teachers should pay particular attention, with didactic and methodical approaches, to the achievement of medium- and high-intensity of children’s P / SA.

  9. 2011 European School of High-Energy Physics

    CERN Document Server

    Mulders, M; ESHEP2011; ESHEP 2011

    2014-01-01

    The European School of High-Energy Physics is intended to give young physicists an introduction to the theoretical aspects of recent advances in elementary particle physics. These proceedings contain lecture notes on quantum field theory and the Standard Model, quantum chromodynamics, flavour physics, neutrino physics, physics beyond the Standard Model, cosmology, heavy ion physics, statistical data analysis, as well as an account for the physics results with the data accumulated during the first run of the LHC.

  10. Heavy-flavor production and medium properties in high-energy nuclear collisions --What next?

    NARCIS (Netherlands)

    Aarts, G.; Aichelin, J.; Allton, C.; Arnaldi, R.; Bass, S. A.; Bedda, C.; Brambilla, N.; Bratkovskaya, E.; Braun-Munzinger, P.; Bruno, G. E.; Dahms, T.; Das, S. K.; Dembinski, H.; Djordjevic, M.; Ferreiro, E. G.; Frawley, A.; Gossiaux, P. B.; Granier de Cassagnac, R.; Grelli, A.; He, Ming; Horowitz, W. A.; Innocenti, G. M.; Jo, M.; Kaczmarek, O.; Kuijer, P; Laine, M.; Lombardo, M. P.; Mischke, A.; Munhoz, M. G.; Nahrgang, M.; Nguyen, Mai; Oliveira da Silva, A. C.; Petreczky, P.; Rothkopf, A.; Schmelling, M.; Scomparin, E.; Song, Ting; Stachel, J.; Suaide, A. A P; Tolos, L.; Trzeciak, B.; Uras, A.; van Doremalen, L.; Vermunt, L.; Vigolo, S.; Xu, N.; Ye, Z.; Zanoli, H.J.C.; Zhuang, P.

    2017-01-01

    Open and hidden heavy-flavor physics in high-energy nuclear collisions are entering a new and exciting stage towards reaching a clearer understanding of the new experimental results with the possibility to link them directly to the advancement in lattice Quantum Chromo-Dynamics (QCD). Recent results

  11. ON THE RELATIVE 'TRANSPARENCY' OF GAS-PHASE CORONENE MOLECULES TO LOW-ENERGY ELECTRONS: EFFECTS ON THE INTERSTELLAR MEDIUM

    International Nuclear Information System (INIS)

    Carelli, F.; Gianturco, F. A.

    2011-01-01

    Free, gas-phase polycyclic aromatic hydrocarbons (PAHs) are understood to play an important role in the interstellar medium (ISM), as they are thought to significantly contribute to both diffused and unidentified infrared interstellar bands. They are also considered fundamental blocks of the interstellar dust, whose nature has important implications for a plethora of physical and chemical nanoscopic processes within the ISM. Since free electrons represent a versatile alternative way to transport energy in the interstellar space, in this paper we compute from quantum scattering methods the angular redistributions of free electrons by gas-phase coronene molecules, the latter of which are believed to be one of the most representative PAHs, in order to assess their role in describing the efficiency of electron deflection by this molecule. The associated rates can provide useful information about the coupling mechanism between external radio-frequency fields and complex molecular plasmas containing neutral and ionized PAHs. They can also yield information on the possible presence of such species in the dust phase of the medium.

  12. CsI electromagnetic calorimeter development for a low or medium energy e+e- collider

    International Nuclear Information System (INIS)

    King, M.E.

    1993-10-01

    Design considerations for an electromagnetic Csl calorimeter suitable for use at low and medium energy, high-luminosity e + e - storage rings are presented, together with results of a test of an array of Csl(Tl) crystals in an e - /π - beam (120 to 400 MeV) at TRIUMF. The crystal array used in the test was designed to explore longitudinal and transverse crystal segmentation, and a redundant wavelength-shifter and photodiode readout system. Energy resolution of (1.69 ± 0.08)%/√E and (1.83 ± 0.05)%/√E was obtained for two different crystal tower configurations. Position resolution of 6.5 (9.0) mm was obtained at 300 (120)MeV for four 4x4 cm 2 , 4 rl. Csl crystals

  13. MINOS+: a Proposal to FNAL to run MINOS with the medium energy NuMI beam

    Energy Technology Data Exchange (ETDEWEB)

    Tzanankos, G.; /Athens U.; Bishai, M.; Diwan, M.; /Brookhaven; Escobar, C.O.; Gomes, R.A.; Gouffon, P.; /Campinas State U. /Goias U. /Sao Paulo U.; Blake, A.; Thomson, M.; /Cambridge U.; Patterson, R.B.; /Caltech; Adamson, P.; Childress, S.; /Fermilab /IIT, Chicago /Los Alamos /Minnesota U. /Minnesota U., Duluth /Bhubaneswar, NISER /Iowa State U.

    2011-05-01

    This is a proposal to continue to expose the two MINOS detectors to the NuMI muon neutrino beam for three years starting in 2013. The medium energy setting of the NuMI beam projected for NO{nu}A will deliver about 18 x 10{sup 20} protons-on-target during the first three years of operation. This will allow the MINOS Far Detector to collect more than 10,000 charged current muon neutrino events in the 4-10 GeV energy range and provide a stringent test for non-standard neutrino interactions, sterile neutrinos, extra dimensions, neutrino time-of-flight, and perhaps more. In addition there will be more than 3,000 neutral current events which will be particularly useful in extending the sterile neutrino search range.

  14. Prototyping of beam position monitor for medium energy beam transport section of RAON heavy ion accelerator

    Energy Technology Data Exchange (ETDEWEB)

    Jang, Hyojae, E-mail: lkcom@ibs.re.kr; Jin, Hyunchang; Jang, Ji-Ho; Hong, In-Seok [Rare Isotope Science Project, Institute for Basic Science, Daejeon (Korea, Republic of)

    2016-02-15

    A heavy ion accelerator, RAON is going to be built by Rare Isotope Science Project in Korea. Its target is to accelerate various stable ions such as uranium, proton, and xenon from electron cyclotron resonance ion source and some rare isotopes from isotope separation on-line. The beam shaping, charge selection, and modulation should be applied to the ions from these ion sources because RAON adopts a superconducting linear accelerator structure for beam acceleration. For such treatment, low energy beam transport, radio frequency quadrupole, and medium energy beam transport (MEBT) will be installed in injector part of RAON accelerator. Recently, development of a prototype of stripline beam position monitor (BPM) to measure the position of ion beams in MEBT section is under way. In this presentation, design of stripline, electromagnetic (EM) simulation results, and RF measurement test results obtained from the prototyped BPM will be described.

  15. Working with physics High-energy communicator

    CERN Document Server

    Bradshaw, Kate

    2006-01-01

    "Kate Bradshaw is a science communicator working at CERN, the world's largest particle physics Laboratory. She talked to Physics Review about her route from A-level physics to her present job." (3 pages)

  16. Near-field thermal upconversion and energy transfer through a Kerr medium.

    Science.gov (United States)

    Khandekar, Chinmay; Rodriguez, Alejandro W

    2017-09-18

    We present an approach for achieving large Kerr χ (3) -mediated thermal energy transfer at the nanoscale that exploits a general coupled-mode description of triply resonant, four-wave mixing processes. We analyze the efficiency of thermal upconversion and energy transfer from mid- to near-infrared wavelengths in planar geometries involving two slabs supporting far-apart surface plasmon polaritons and separated by a nonlinear χ (3) medium that is irradiated by externally incident light. We study multiple geometric and material configurations and different classes of intervening mediums-either bulk or nanostructured lattices of nanoparticles embedded in nonlinear materials-designed to resonantly enhance the interaction of the incident light with thermal slab resonances. We find that even when the entire system is in thermodynamic equilibrium (at room temperature) and under typical drive intensities ~ W/μm 2 , the resulting upconversion rates can approach and even exceed thermal flux rates achieved in typical symmetric and non-equilibrium configurations of vacuum-separated slabs. The proposed nonlinear scheme could potentially be exploited to achieve thermal cooling and refrigeration at the nanoscale, and to actively control heat transfer between materials with dramatically different resonant responses.

  17. National absorbed dose to water references for radiotherapy medium energy X-rays by water calorimetry

    International Nuclear Information System (INIS)

    Perichon, N.

    2012-01-01

    LNE-LNHB current references for medium energy X-rays are established in terms of air kerma. Absorbed dose to water, which is the quantity of interest for radiotherapy, is obtained by transfer dosimetric techniques following a methodology described in international protocols. The aim of the thesis is to establish standards in terms of absorbed dose to water in the reference protocol conditions by water calorimetry. The basic principle of water calorimetry is to measure the absorbed dose from the rise in temperature of water under irradiation. A calorimeter was developed to perform measurements at a 2 cm depth in water according to IAEA TRS-398 protocol for medium energy x-rays. Absorbed dose rates to water measured by calorimetry were compared to the values established using protocols based on references in terms of air kerma. A difference lower than 2.1% was reported. Standard uncertainty of water calorimetry being 0.8%, the one associated to the values from protocols being around 3.0%, results are consistent considering the uncertainties. Thanks to these new standards, it will be possible to use IAEA TRS-398 protocol to determine absorbed dose to water: a significant reduction of uncertainties is obtained (divided by 3 by comparison with the application of the IAEA TRS-277 protocol). Currently, none of the counterparts' laboratories own such an instrument allowing direct determination of standards in the reference conditions recommended by the international radiotherapy protocols. (author) [fr

  18. UPR/Mayaguez High Energy Physics

    International Nuclear Information System (INIS)

    Lopez, Angel M.

    2015-01-01

    For the period of sixteen years covered by this report (June 1, 1997 - July 31, 2013) the High Energy Physics Group at the University of Puerto Rico's Mayaguez Campus (UPRM) carried out an extensive research program that included major experiments at Fermi National Accelerator Laboratory (Fermilab), the Cornell Electron-positron Collider and CERN. In particular, these were E831 (FOCUS) at Fermilab, CLEOc at Cornell and the Compact Muon Solenoid (CMS) at the Large Hadron Collider (LHC) at CERN. The group's history is one of successful execution and growth. Beginning with one faculty researcher in 1985, it eventually included four faculty researchers, one post-doctoral research associate, two undergraduates and as many as six graduate students at one time working on one of the experiments that discovered the Higgs boson. Some of this expansion was due to the group's leveraging of funds from the Department of Energy's core grant to attract funds from National Science Foundation programs not targeted to high energy physics. Besides the group's research productivity, its other major contribution was the training of a large number of MS students who later went on to successful technical careers in industry as well as academia including many who obtained PhD degrees at US universities. In an attempt to document this history, this final report gives a general description of the Group's work prior to June 1, 2010, the starting date for the last grant renewal period. Much more detail can, of course, be found in the annual reports submitted up to that date. The work during the last grant period is discussed in detail in a separate section. To summarize the group's scientific accomplishments, one can point to the results of the experiments. Both FOCUS and CLEOc were designed to carry out precise measurements of processes involving the heavy quarks, charm and bottom. Heavy quarks are particularly interesting because, due to their mass

  19. The effects of a physical activity intervention on employees in small and medium enterprises: a mixed methods study.

    Science.gov (United States)

    Edmunds, Sarah; Stephenson, Duncan; Clow, Angela

    2013-01-01

    Workplaces have potential as a setting for physical activity promotion but evidence of the effectiveness of intervention programmes in small and medium sized enterprises is limited. This paper reports the impact of an intervention which trained existing employees to promote physical activity to their colleagues. Eighty-nine previously low-active employees from 17 small and medium sized organisations participated. A mixed methods evaluation design was used. Quantitative data were collected at baseline and 6 months later using an online questionnaire. Qualitative data from a series of 6 focus groups were analysed. Repeated measures t-tests showed significant increases over time in physical activity, general health rating, satisfaction with life and positive mood states. There were significant decreases in body mass index (BMI), perceived stress, negative mood states and presenteeism. There was no change in absenteeism. Analysis of focus group data provided further insight into the impact of the intervention. Five major themes emerged: awareness of physical activity; sustaining physical activity behaviour change; improved health and well-being; enhanced social networks; and embedding physical activity in the workplace culture. This study shows it is feasible and effective to train employees in small and medium sized enterprises to support their colleagues in physical activity behaviour change.

  20. Working group report: High energy and collider physics

    Indian Academy of Sciences (India)

    journal of. December 2004 physics pp. 1331–1353. Working group report: High energy and collider physics. Coordinators: NABA K MONDAL1 and SAURABH D ... The projects undertaken in the working group I on high energy and collider physics ..... A recent summary of the progress in the area can be found in [20,21] and.

  1. Comparative characteristics structure physically prepared fighters high qualification light, medium and heavy weight category

    Directory of Open Access Journals (Sweden)

    O.O. Pryimakov

    2014-09-01

    Full Text Available Purpose : study of the structure of physical preparedness (PP highly skilled fighters of different weight categories. Material : 147 athletes surveyed in separate weight classes. Recorded 26 indicators PP. Results : It was found that the mass of fighters is an important determinant of the level of development, value and structure of the phase relationship indicators. Informative indices PP interrelated with weight category fighters are: Runtime 45 shots in a specialized test, the number of pull-ups in the maximum rate of 10 seconds and the maximum number is not limited to a run-time while climbing a rope to a height of 4 m, height of jumps up to space. With the increase in the weight category of fighters dropping speed, relative strength, speed and power endurance, reduced muscle explosive quality, the level of special performance. Same relationship PP indicators reflecting its structure changed insignificantly. Conclusions : The developed regression models should be used for modeling and prediction of individual athletes sides PP light, medium and heavy weight categories, construction of group regulatory assessment scales.

  2. Networking for High Energy and Nuclear Physics

    Science.gov (United States)

    Newman, Harvey B.

    2007-07-01

    This report gives an overview of the status and outlook for the world's research networks and major international links used by the high energy physics and other scientific communities, network technology advances on which our community depends and in which we have an increasingly important role, and the problem of the Digital Divide, which is a primary focus of ICFA's Standing Committee on Inter-regional Connectivity (SCIC). Wide area networks of sufficient, and rapidly increasing end-to-end capability are vital for every phase of high energy physicists' work. Our bandwidth usage, and the typical capacity of the major national backbones and intercontinental links used by our field have progressed by a factor of more than 1000 over the past decade, and the outlook is for a similar increase over the next decade. This striking exponential growth trend, outstripping the growth rates in other areas of information technology, has continued in the past year, with many of the major national, continental and transoceanic networks supporting research and education progressing from a 10 Gigabits/sec (Gbps) backbone to multiple 10 Gbps links in their core. This is complemented by the use of point-to-point "light paths" to support the most demanding applications, including high energy physics, in a growing list of cases. As we approach the era of LHC physics, the growing need to access and transport Terabyte-scale and later 10 to 100 Terabyte datasets among more than 100 "Tier1" and "Tier2" centers at universities and laboratories spread throughout the world has brought the key role of networks, and the ongoing need for their development, sharply into focus. Bandwidth itself on an increasing scale is not enough. Realizing the scientific wealth of the LHC and our other major scientific programs depends crucially on our ability to use the bandwidth efficiently and reliably, with reliable high rates of data throughput, and effectively, where many parallel large-scale data

  3. Advanced Dark Energy Physics Telescope (ADEPT)

    Energy Technology Data Exchange (ETDEWEB)

    Charles L. Bennett

    2009-03-26

    In 2006, we proposed to NASA a detailed concept study of ADEPT (the Advanced Dark Energy Physics Telescope), a potential space mission to reliably measure the time-evolution of dark energy by conducting the largest effective volume survey of the universe ever done. A peer-review panel of scientific, management, and technical experts reported back the highest possible 'excellent' rating for ADEPT. We have since made substantial advances in the scientific and technical maturity of the mission design. With this Department of Energy (DOE) award we were granted supplemental funding to support specific extended research items that were not included in the NASA proposal, many of which were intended to broadly advance future dark energy research, as laid out by the Dark Energy Task Force (DETF). The proposed work had three targets: (1) the adaptation of large-format infrared arrays to a 2 micron cut-off; (2) analytical research to improve the understanding of the dark energy figure-of- merit; and (3) extended studies of baryon acoustic oscillation systematic uncertainties. Since the actual award was only for {approx}10% of the proposed amount item (1) was dropped and item (2) work was severely restricted, consistent with the referee reviews of the proposal, although there was considerable contradictions between reviewer comments and several comments that displayed a lack of familiarity with the research. None the less, item (3) was the focus of the work. To characterize the nature of the dark energy, ADEPT is designed to observe baryon acoustic oscillations (BAO) in a large galaxy redshift survey and to obtain substantial numbers of high-redshift Type Ia supernovae (SNe Ia). The 2003 Wilkinson Microwave Anisotropy Probe (WMAP) made a precise determination of the BAO 'standard ruler' scale, as it was imprinted on the cosmic microwave background (CMB) at z {approx} 1090. The standard ruler was also imprinted on the pattern of galaxies, and was first

  4. Department of High Energy Physics - Overview

    International Nuclear Information System (INIS)

    Bialkowska, H.

    2005-01-01

    Full text: The activities of the Department are centered around experiments performed at large accelerator laboratories: 1. At CERN, the European Laboratory for Particle Physics in Geneva, Switzerland: Data taking experiments: COMPASS (Compact Muon and Proton Apparatus for Structure and Spectroscopy) - studies of the gluon polarization in the nucleon. Experiments that completed data taking but continue the analysis: DELPHI - using the data from LEP e + e - storage ring - studies of the Standard Model, Higgs and Supersymmetry searches; NA49 and WA98 - heavy ion experiments, study hadronic and nuclear interactions, searching for the quark-gluon plasma. 2. The 'Pi of the Sky' experiment, searching for optical flashes associated with Gamma Ray Bursts has started taking data with a set of CCD cameras mounted in the Chile Observatory Station. 3. WASA experiment, at the CELSIUS storage ring in Uppsala, studies near threshold resonance production. 4. ZEUS experiment at HERA in Hamburg - studies of proton structure functions and diffractive interactions. 5. Neutrino experiments at SuperKamiokande and K2K in Japan - studies of neutrino oscillations. 6. Preparations for future experiments: a) ICARUS - in preparation for the neutrino beam from CERN, to study neutrino oscillations, b) Experiments at the future Large Hadron Collider at CERN: - CMS - Compact Muon Solenoid, - LHCb - study of b-quark production, - ALICE - study of heavy ion collisions. There is also a small group involved in theoretical work on the phenomenology of quark-gluon plasma formation and the low energy hadronic reactions. A well equipped mechanical workshop is now involved in a large scale production of the straw tube modules for the LHCb detector. Several physicists from our department are involved in popularization. A close collaboration with the Division of Particles and Elementary Interactions from the Institute of Experimental Physics is maintained. This also involves supervising students. A large

  5. Student Use of Energy Concepts from Physics in Chemistry Courses

    Science.gov (United States)

    Nagel, Megan L.; Lindsey, Beth A.

    2015-01-01

    This paper describes an interdisciplinary investigation of students' usage of ideas about energy from physics in the context of introductory chemistry. We focus on student understanding of the idea that potential energy is a function of distance between interacting objects, a concept relevant to understanding potential energy in both physical and…

  6. UPR/Mayaguez High Energy Physics

    Energy Technology Data Exchange (ETDEWEB)

    López, Angel M. [Univ. of Puerto Rico, Mayaguez (Puerto Rico)

    2015-10-27

    For the period of sixteen years covered by this report (June 1, 1997 - July 31, 2013) the High Energy Physics Group at the University of Puerto Rico’s Mayaguez Campus (UPRM) carried out an extensive research program that included major experiments at Fermi National Accelerator Laboratory (Fermilab), the Cornell Electron-positron Collider and CERN. In particular, these were E831 (FOCUS) at Fermilab, CLEOc at Cornell and the Compact Muon Solenoid (CMS) at the Large Hadron Collider (LHC) at CERN. The group’s history is one of successful execution and growth. Beginning with one faculty researcher in 1985, it eventually included four faculty researchers, one post-doctoral research associate, two undergraduates and as many as six graduate students at one time working on one of the experiments that discovered the Higgs boson. Some of this expansion was due to the group’s leveraging of funds from the Department of Energy’s core grant to attract funds from National Science Foundation programs not targeted to high energy physics. Besides the group’s research productivity, its other major contribution was the training of a large number of MS students who later went on to successful technical careers in industry as well as academia including many who obtained PhD degrees at US universities. In an attempt to document this history, this final report gives a general description of the Group’s work prior to June 1, 2010, the starting date for the last grant renewal period. Much more detail can, of course, be found in the annual reports submitted up to that date. The work during the last grant period is discussed in detail in a separate section. To summarize the group’s scientific accomplishments, one can point to the results of the experiments. Both FOCUS and CLEOc were designed to carry out precise measurements of processes involving the heavy quarks, charm and bottom. Heavy quarks are particularly interesting because, due to their mass, theoretical calculations

  7. Department of High Energy Physics - Overview

    International Nuclear Information System (INIS)

    Bialkowska, H.

    2006-01-01

    The activities of the Department are centered around experiments performed at large accelerator laboratories: I. At CERN, the European Laboratory for Particle Physics in Geneva, Switzerland: - Data taking experiments: COMPASS (Compact Muon and Proton Apparatus for Structure and Spectroscopy) - studies of the gluon polarization in the nucleon; - Experiments that finished data taking but continue the analysis: NA49 and WA98 - heavy ion experiments, study hadronic and nuclear interactions, searching for the quark-gluon plasma. II. The 'Pi of the Sky' experiment, searching for optical flashes associated with Gamma Ray Bursts takes data with a set of CCD cameras mounted in the Chile Observatory Station, and works on an extension of the system. III. WASA experiment, recently transferred from the CELSIUS storage ring in Uppsala to Juelich, studies near threshold resonance production. IV. ZEUS experiment at HERA in Hamburg - studies of proton structure functions and diffractive interactions. V. Neutrino experiments at SuperKamiokande and K2K in Japan - studies of the neutrino oscillations. VI. Preparations for future experiments: a) ICARUS - in preparation for the neutrino beam from CERN, to study neutrino oscillations, b) Experiments at the future Large Hadron Collider at CERN: CMS - Compact Muon Solenoid, LHCb - study of b-quark production, ALICE - study of heavy ion collisions. A team of physicists, engineers and technicians, using our well equipped mechanical workshop, with 'clean room' (class 100 000) facilities has performed a large scale production of straw tube modules for the LHCb experiment. Preparations for LHC physics requires an active participation of the teams involved in the computer GRID implementation. There is also a small group involved in theoretical work on the phenomenology of quark-gluon plasma formation and the low energy hadronic reactions. Several physicists from our department are actively involved in science popularization. A close

  8. Progress on the design of the polarized Medium-energy Electron Ion Collider at JLAB

    Energy Technology Data Exchange (ETDEWEB)

    Lin, F.; Bogacz, A.; Brindza, P.; Camsonne, A.; Daly, E.; Derbenev, Ya. S.; Douglas, D.; Ent, R.; Gaskell, D.; Geng, R.; Grames, J.; Guo, J.; Harwood, L.; Hutton, A.; Jordan, K.; Kimber, A.; Krafft, G.; Li, R.; Michalski, T.; Morozov, V. S.; Nadel-Turonski, P.; /Jefferson Lab /Argonne /DESY /Moscow , Inst. Phys. Tech., Dolgoprydny /Dubna, JINR /Northern Illinois U. /Old Doominion U. /Novosibirsk, GOO Zaryad /SLAC /Texas A-M

    2015-07-14

    The Medium-energy Electron Ion Collider (MEIC) at JLab is designed to provide high luminosity and high polarization needed to reach new frontiers in the exploration of nuclear structure. The luminosity, exceeding 1033 cm-2s-1 in a broad range of the center-of-mass (CM) energy and maximum luminosity above 1034 cm-2s-1, is achieved by high-rate collisions of short small-emittance low-charge bunches made possible by high-energy electron cooling of the ion beam and synchrotron radiation damping of the electron beam. The polarization of light ion species (p, d, 3He) can be easily preserved and manipulated due to the unique figure-8 shape of the collider rings. A fully consistent set of parameters have been developed considering the balance of machine performance, required technical development and cost. This paper reports recent progress on the MEIC accelerator design including electron and ion complexes, integrated interaction region design, figure-8-ring-based electron and ion polarization schemes, RF/SRF systems and ERL-based high-energy electron cooling. Luminosity performance is also presented for the MEIC baseline design.

  9. Dose distribution considerations of medium energy electron beams at extended source-to-surface distance

    International Nuclear Information System (INIS)

    Saw, Cheng B.; Ayyangar, Komanduri M.; Pawlicki, Todd; Korb, Leroy J.

    1995-01-01

    Purpose: To determine the effects of extended source-to-surface distance (SSD) on dose distributions for a range of medium energy electron beams and cone sizes. Methods and Materials: The depth-dose curves and isodose distributions of 6 MeV, 10 MeV, and 14 MeV electron beams from a dual photon and multielectron energies linear accelerator were studied. To examine the influence of cone size, the smallest and the largest cone sizes available were used. Measurements were carried out in a water phantom with the water surface set at three different SSDs from 101 to 116 cm. Results: In the region between the phantom surface and the depth of maximum dose, the depth-dose decreases as the SSD increases for all electron beam energies. The effects of extended SSD in the region beyond the depth of maximum dose are unobservable and, hence, considered minimal. Extended SSD effects are apparent for higher electron beam energy with small cone size causing the depth of maximum dose and the rapid dose fall-off region to shift deeper into the phantom. However, the change in the depth-dose curve is small. On the other hand, the rapid dose fall-off region is essentially unaltered when the large cone is used. The penumbra enlarges and electron beam flatness deteriorates with increasing SSD

  10. Dosimetric references for low and medium energy X rays at the LNE-LHB: X ray spectrum simulation and calculation of corrective factors using the Monte Carlo method

    International Nuclear Information System (INIS)

    Ksouri, W.; Gouriou, J.; Denoziere, M.

    2010-01-01

    As the LNHB (Laboratoire National Henri Becquerel) has set dosimetric references for low and medium energy X rays in medical and industrial applications, the authors report the determination of different corrective factors: those related to the mechanical realization of the ionization chamber, and those related to physical phenomena in this room (electron loss or Ke, and photon diffusion or Ksc). These factors are computed using the Monte Carlo PENELOPE code. As the determination of Ke and Ksc requires the knowledge of the energy spectral distribution of impinging photons, and as spectrum measurement exhibit ambiguities, spectra are determined through a Monte Carlo simulation using PENELOPE and EGS codes, by modelling the X ray tube

  11. High energy physics advisory panel`s subpanel on vision for the future of high-energy physics

    Energy Technology Data Exchange (ETDEWEB)

    1994-05-01

    This report was requested by the Secretary of Energy to (1) define a long-term program for pursuing the most important high-energy physics goals since the termination of the Superconducting Super Collider (SSC) project, (2) assess the current US high-energy physics program, and (3) make recommendations regarding the future of the field. Subjects on which recommendations were sought and which the report addresses were: high-energy physics funding priorities; facilitating international collaboration for future construction of large high-energy physics facilities; optimizing uses of the investment made in the SSC; how to encourage displaced scientists and engineers to remain in high-energy physics and to attract young scientists to enter the field in the future. The report includes a description of the state of high-energy physics research in the context of history, a summary of the SSC project, and documentation of the report`s own origins and development.

  12. Main physical problems of superhigh energy accelerators

    International Nuclear Information System (INIS)

    Lapidus, L.I.

    1979-01-01

    A survey is given of the state and prospects for the scientific researches to be carried out at the largest charged particle accelerators now under construction. The fundamental problems of the elementary particle physics are considered which can be solved on the base of experiments at high-energy accelerators. The problems to be solved involve development of the theory of various quark number, accurate determination of the charged and neutral intermediate vector boson masses in the Weinberg-Salam theory, the problem of production of t-quark, W -+ - and Z deg bosons, Higgs mesons and investigation of their interactions, examination of quark and lepton spectra, studies on the effects of strong interactions. As a result of the investigations on hadrons at maximum momentum transfers, the data on space-time structure at short distances can be obtained. It is emphasized that there are no engineering barriers to the construction of such accelerators. The main problem lies in financial investment. A conclusion is drawn that the next generation of accelerators will be developed on the base of cooperation between many countries [ru

  13. Automatic keywording of High Energy Physics

    CERN Document Server

    Dallman, David Peter

    1999-01-01

    Bibliographic databases were developed from the traditional library card catalogue in order to enable users to access library documents via various types of bibliographic information, such as title, author, series or conference date. In addition these catalogues sometimes contained some form of indexation by subject, such as the Universal (or Dewey) Decimal Classification used for books. With the introduction of the eprint archives, set up by the High Energy Physics (HEP) Community in the early 90s, huge collections of documents in several fields have been made available on the World Wide Web. These developments however have not yet been followed up from a keywording point of view. We will see in this paper how important it is to attribute keywords to all documents in the area of HEP Grey Literature. As libraries are facing a future with less and less manpower available and more and more documents, we will explore the possibility of being helped by automatic classification software. We will specifically menti...

  14. Technical and economic analysis of integrating low-medium temperature solar energy into power plant

    International Nuclear Information System (INIS)

    Wang, Fu; Li, Hailong; Zhao, Jun; Deng, Shuai; Yan, Jinyue

    2016-01-01

    Highlights: • Seven configurations were studied regarding the integration of solar thermal energy. • Economic analysis was conducted on new built plants and retrofitted power plants. • Using solar thermal energy to preheat high pressure feedwater shows the best performance. - Abstract: In order to mitigate CO 2 emission and improve the efficiency of the utilization of solar thermal energy (STE), solar thermal energy is proposed to be integrated into a power plant. In this paper, seven configurations were studied regarding the integration of STE. A 300 MWe subcritical coal-fired plant was selected as the reference, chemical absorption using monoethanolamine solvent was employed for CO 2 ​capture, and parabolic trough collectors and evacuated tube collectors were used for STE collection. Both technical analysis and economic evaluation were conducted. Results show that integrating solar energy with post-combustion CO 2 ​ capture can effectively increase power generation and reduce the electrical efficiency penalty caused by CO 2 capture. Among the different configurations, Config-2 and Config-6, which use medium temperature STE to replace high pressure feedwater without and with CO 2 capture, show the highest net incremental solar efficiency. When building new plants, integrating solar energy can effectively reduce the levelized cost of electricity (LCOE). The lowest LCOE, 99.28 USD/MWh, results from Config-6, with a parabolic trough collector price of 185 USD/m 2 . When retrofitting existing power plants, Config-6 also shows the highest net present value (NPV), while Config-2 has the shortest payback time at a carbon tax of 50 USD/ton CO 2 . In addition, both LCOE and NPV/payback time are clearly affected by the relative solar load fraction, the price of solar thermal collectors and the carbon tax. Comparatively, the carbon tax can affect the configurations with CO 2 capture more clearly than those without CO 2 capture.

  15. Department of High Energy Physics - Overview

    International Nuclear Information System (INIS)

    Bialkowska, H.

    2010-01-01

    Full text: The main activities of the Department can be grouped into four parts: I. An ongoing analysis of data from large accelerator facilities. At CERN SPS: The Compass experiment, 'a flagship of the CERN fixed target program', studies the structure of the nucleon. Gluon polarization analysis was the main subject of this year. Compass is an active experiment, and there is an ongoing effort on data taking and detector development. Two heavy ion experiments. WA98 and NA49. have finished data taking, but continue analysis. The wide purpose NA61 experiment has taken data, and our team works on the hadron-nucleus processes, important for the neutrino program. At COSY: The WASA experiment works with low energy (up to 3,7 GeV) beams of protons and deuterons. studying η → 3π 0 decays and leptonic decays of eta mesons. New limits on branching ratios for such decays have been determined. Production of M mesons in the pd interaction was measured for the first time in the near threshold energy range. Altogether 8 publications came from the experiment. II. Start of the LHC operation. Three teams work on LHC experiments: CMS, LHCb and ALICE. The CMS experiment is ready for data taking. The muon trigger system, based on the resistive plate chambers RFC, has been installed and tested. Three papers on the detector performance have been published, and 25 submitted for publication. The LHCb experiment team has worked on the system of the Inner Detector positioning station Rasnik, and the beam phase and intensity monitor (together with the (P-III team). Simulations of the B decays into vector mesons, for the High Level Trigger, were performed. The ALICE team has worked on the installation of the photon detector PHOS and tests with cosmic muons. Simulations for the neutral pion reconstruction were performed. The first very preliminary data on multiplicity from pp collisions at 900 GeV have been published. Preparation of the computing base for future large experiments - work

  16. Physics of (very) high energy e+-e- colliders

    International Nuclear Information System (INIS)

    Peskin, M.E.

    1984-10-01

    I review the physics capabilities of e + e - colliders of hundred GeV to TeV center-of-mass energies, emphasizing issues relevant to the physics of symmetry breaking in the weak interactions. 24 references

  17. High energy physics research. Final technical report, 1957--1994

    International Nuclear Information System (INIS)

    Williams, H.H.

    1995-01-01

    This is the final technical report to the Department of Energy on High Energy Physics at the University of Pennsylvania. It discusses research conducted in the following areas: neutrino astrophysics and cosmology; string theory; electroweak and collider physics; supergravity; cp violation and baryogenesis; particle cosmology; collider detector at Fermilab; the sudbury neutrino observatory; B-physics; particle physics in nuclei; and advanced electronics and detector development

  18. High energy physics research. Final technical report, 1957--1994

    Energy Technology Data Exchange (ETDEWEB)

    Williams, H.H.

    1995-10-01

    This is the final technical report to the Department of Energy on High Energy Physics at the University of Pennsylvania. It discusses research conducted in the following areas: neutrino astrophysics and cosmology; string theory; electroweak and collider physics; supergravity; cp violation and baryogenesis; particle cosmology; collider detector at Fermilab; the sudbury neutrino observatory; B-physics; particle physics in nuclei; and advanced electronics and detector development.

  19. Energetic Communities: Planning support for sustainable energy transition in small- and medium-sized communities

    Directory of Open Access Journals (Sweden)

    Christina Valeska Sager-Klauss

    2016-04-01

    Full Text Available The necessity for transition in the energy sector is beyond dispute and high on the political agendas. Climate change, the depletion of fossil fuels and the vulnerability of economies to resource speculation and unreliable political systems in the producing countries lay path for a broad implementation of smart alternative solutions. This means the integration of more sustainable renewable energy sources in the existing supply structures or the displacement of existing systems by new ones. Cities and communities are central players in the energy transition process. Energy demand is determined by the built environment. Renewable energy production needs space. The conflicts between different interest groups often break out in the context of local implementation measures that affect urban planning and the appearance of landscapes. Small- and medium-sized communities might prove to be game-changers in the overall energy transition because many problems have to be solved within their ambit. Urban planning is dealing with the numerous processes of urban change. Energy is a fairly new task to be addressed and many stakeholders lack experience and criteria for strategic decision making. After a period of fierce determination to turn the wheel against climate change, it seems that there is a growing resignation among politicians, planners and the public because some things have not turned out the way we’d expected and the hope for quick solutions fades. Rebound-effects seem to eat up the savings to a good extent, and alternative ideas of how sustainable energy systems may be put into place have not yet been persuasive in many cases. Energy systems have proved to be complex. They are still perceived to be important but in practice there is a growing uneasiness about the right steps to take. The overarching research question of this thesis is: What do decision makers in smalland medium-sized communities need to become more successful in implementing

  20. Technical manual: a survey of scintillating medium for high-energy particle detection

    OpenAIRE

    Baitenov, Adil; Iakovlev, Alexander; Beznosko, Dmitriy

    2016-01-01

    There are various particle detection methods used nowadays and the most common is using scintillators. Among scintillating materials, solid plastic and water-based liquid scintillators (WbLS) are the latest development. In particular, WbLS allows researchers to apply different particle detection methods for increased experiment efficiency. This survey attempts to make an overview on detection methods and detectors in high-energy physics using scintillators. It is meant as a summary for those ...

  1. Thermal Impact of Medium Deep Borehole Thermal Energy Storage on the Shallow Subsurface

    Science.gov (United States)

    Welsch, Bastian; Schulte, Daniel O.; Rühaak, Wolfram; Bär, Kristian; Sass, Ingo

    2017-04-01

    Borehole heat exchanger arrays are a well-suited and already widely applied method for exploiting the shallow subsurface as seasonal heat storage. However, in most of the populated regions the shallow subsurface also comprises an important aquifer system used for drinking water production. Thus, the operation of shallow geothermal heat storage systems leads to a significant increase in groundwater temperatures in the proximity of the borehole heat exchanger array. The magnitude of the impact on groundwater quality and microbiology associated with this temperature rise is controversially discussed. Nevertheless, the protection of shallow groundwater resources has priority. Accordingly, water authorities often follow restrictive permission policies for building such storage systems. An alternative approach to avoid this issue is the application of medium deep borehole heat exchanger arrays instead of shallow ones. The thermal impact on shallow aquifers can be significantly reduced as heat is stored at larger depth. Moreover, it can be further diminished by the installation of a thermally insulating materials in the upper section of the borehole heat exchangers. Based on a numerical simulation study, the advantageous effects of medium deep borehole thermal energy storage are demonstrated and quantified. A finite element software is used to model the heat transport in the subsurface in 3D, while the heat transport in the borehole heat exchangers is solved analytically in 1D. For this purpose, an extended analytical solution is implemented, which also allows for the consideration of a thermally insulating borehole section.

  2. High energy physics: Experimental, theoretical and phenomenology institute

    International Nuclear Information System (INIS)

    Barger, V.; Camerini, U.; Carlsmith, D.; Durand, B.; Durand, L.; Erwin, A.; Fry, W.; Goebel, C.; Halzen, F.; Loveless, R.; March, R.; Morse, R.; Olsson, M.; Pondrom, L.; Prepost, R.; Reeder, D.; Sheaff, M.; Smith, W.; Thompson, M.; Wu, S.L.

    1991-01-01

    This report discusses research in the following task: hadron physics at Fermilab; Lepton hadron scattering; electromagnetic ampersand weak interactions at the Stanford Linear Accelerator Center - SLAC; hyperon beam program - hadroproduction of heavy beam flavors at Fermilab; ultra high energy colliding beam physics; Institute for high energy physics phenomenology; weak ampersand electromagnetic interactions using PETRA at DESY ampersand LEP at CERN; theoretical high energy physics; DUMAND; study of ultra high energy gamma rays; data analysis facility; and R ampersand D for major subsystems for the SSC detectors

  3. Information technology -- Telecommunications and information exchange between systems -- Local and metropolitan area networks -- Specific requirements -- Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) specifications

    CERN Document Server

    International Organization for Standardization. Geneva

    1997-01-01

    Information technology -- Telecommunications and information exchange between systems -- Local and metropolitan area networks -- Specific requirements -- Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) specifications

  4. Influence of Surface Energy Effects on Elastic Fields of a Layered Elastic Medium under Surface Loading

    Directory of Open Access Journals (Sweden)

    Supakorn Tirapat

    2017-01-01

    Full Text Available This paper presents the analysis of a layered elastic half space under the action of axisymmetric surface loading and the influence of the surface energy effects. The boundary value problems for the bulk and the surface are formulated based on classical linear elasticity and a complete Gurtin-Murdoch constitutive relation. An analytical technique using Love’s representation and the Hankel integral transform is employed to derive an integral-form solution for both displacement and stress fields. An efficient numerical quadrature is then applied to accurately evaluate all involved integrals. Selected numerical results are presented to portray the influence of various parameters on elastic fields. Numerical results indicate that the surface stress displays a significant influence on both displacement and stress fields. It is also found that the layered half space becomes stiffer with the presence of surface stresses. In addition, unlike the classical elasticity solution, size-dependent behavior of elastic fields is noted. The present analytical solutions provide fundamental understanding of the influence of surface energy on layered elastic materials. It can also be used as a benchmark solution for the development of numerical techniques such as FEM and BEM, for analysis of more complex problems involving a layered medium under the influence of surface energy effects.

  5. Beam dynamics and commissioning of low and medium energy H- beam at Linac4

    CERN Document Server

    Satri, Masoomeh Yarmohammadi; Lombardi, Alessandra; Lamehi-Rachti , Mohammad

    The First step of the CERN Large Hadron Collider injectors upgrade (LIU) project is Linac4. It accelerates H- ions to 160 MeV in an 80 m long accelerator housed in a tunnel 12 m underground, presently under construction. It will replace the present 50 MeV proton Linac2 as injector of the proton accelerator complex to increase the LHC luminosity. It consists of a 45 keV RF volume source, a twosolenoid Low Energy Beam Transport (LEBT), a 352.2 MHz Radio Frequency Quadrupole (RFQ) accelerating the beam to 3 MeV, a Medium Energy Beam Transport (MEBT) line. The MEBT houses a fast chopper to selectively remove unwanted micro-bunches in the 352 MHz sequence and avoid losses at capture in the CERN PSB (1 MHz). After chopping, the beam acceleration continues by a 50 MeV Drift Tube Linac (DTL), a 100 MeV Cell-Coupled Drift Tube Linac and a Pi-Mode Structure bringing the beam to the final energy of 160 MeV. Linac4 has been commissioned with a temporary source up to 12 MeV. The beam commissioning stages of Linac4 in LEBT...

  6. A Pair Production Telescope for Medium-Energy Gamma-Ray Polarimetry

    Energy Technology Data Exchange (ETDEWEB)

    Hunter , Stanley D.; Bloser, Peter F.; Depaola, Gerardo O.; Dion, Michael P.; DeNolfo, Georgia A.; Hanu, Andrei; Iparraguirre, Marcos; Legere, Jason; Longo, Francesco; McConnell, Mark L.; Nowicki, Suzanne F.; Ryan, James M.; Son, Seunghee; Stecker, Floyd W.

    2014-08-01

    We describe the science motivation and development of a pair production telescope for medium-13 energy gamma-ray polarimetry. Our instrument concept, the Advanced Energetic Pair Telescope 14 (AdEPT), takes advantage of the Three-Dimensional Track Imager, a low-density gaseous time 15 projection chamber, to achieve angular resolution within a factor of two of the pair production 16 kinematics limit (~0.6° at 70 MeV), continuum sensitivity comparable with the Fermi-LAT front 17 detector (<3×10-6 MeV cm-2 s-1 at 70 MeV), and minimum detectable polarization less than 10% 18 for a 10 millicrab source in 106 seconds.

  7. Software-Defined Solutions for Managing Energy Use in Small to Medium Sized Commercial Buildings

    Energy Technology Data Exchange (ETDEWEB)

    Peffer, Therese [Univ. of California, Berkeley, CA (United States); Council on International Education Exchange (CIEE), Portland, ME (United States); Blumstein, Carl [Council on International Education Exchange (CIEE), Portland, ME (United States); Culler, David [Univ. of California, Berkeley, CA (United States). Electrical Engineering and Computer Sciences (EECS); Modera, Mark [Univ. of California, Davis, CA (United States). Western Cooling Efficiency Center (WCEC); Meier, Alan [Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)

    2015-09-10

    The Project uses state-of-the-art computer science to extend the benefits of Building Automation Systems (BAS) typically found in large buildings (>100,000 square foot) to medium-sized commercial buildings (<50,000 sq ft). The BAS developed in this project, termed OpenBAS, uses an open-source and open software architecture platform, user interface, and plug-and-play control devices to facilitate adoption of energy efficiency strategies in the commercial building sector throughout the United States. At the heart of this “turn key” BAS is the platform with three types of controllers—thermostat, lighting controller, and general controller—that are easily “discovered” by the platform in a plug-and-play fashion. The user interface showcases the platform and provides the control system set-up, system status display and means of automatically mapping the control points in the system.

  8. A Pair Production Telescope for Medium-Energy Gamma-Ray Polarimetry

    Science.gov (United States)

    Hunter, Stanley D.; Bloser, Peter F.; Depaola, Gerardo; Dion, Michael P.; DeNolfo, Georgia A.; Hanu, Andrei; Iparraguirre, Marcos; Legere, Jason; Longo, Francesco; McConnell, Mark L.; hide

    2014-01-01

    We describe the science motivation and development of a pair production telescope for medium-energy (approximately 5-200 Mega electron Volts) gamma-ray polarimetry. Our instrument concept, the Advanced Energetic Pair Telescope (AdEPT), takes advantage of the Three-Dimensional Track Imager, a low-density gaseous time projection chamber, to achieve angular resolution within a factor of two of the pair production kinematics limit (approximately 0.6 deg at 70 Mega electron Volts), continuum sensitivity comparable with the Fermi-LAT front detector (is less than 3 x 10(exp -6) Mega electron Volts per square centimeter per second at 70 Mega electron Volts), and minimum detectable polarization less than 10% for a 10 milliCrab source in 10(exp 6) s.

  9. PROPERTIES OF DIFFUSE INTERSTELLAR BANDS AT DIFFERENT PHYSICAL CONDITIONS OF THE INTERSTELLAR MEDIUM

    International Nuclear Information System (INIS)

    Kos, J.; Zwitter, T.

    2013-01-01

    Diffuse interstellar bands (DIBs) can trace different conditions of the interstellar medium (ISM) along the sightline toward the observed stars. A small survey was made in optical wavelengths, producing high-resolution and high signal-to-noise spectra. We present measurements of 19 DIBs' properties in 50 sightlines toward hot stars, distributed at a variety of galactic coordinates and interstellar reddening. Equivalent widths were obtained by fitting asymmetric Gaussian and variable continua to DIBs. Conditions of the ISM were calculated from eight atomic and molecular interstellar lines. Two distinctly different types of DIBs were identified by carefully comparing correlation coefficients between DIBs and reddening and by different behavior in UV-shielded (ζ) and nonshielded (σ) sightlines. A ratio of DIBs at 5780 Å and 5797 Å proved to be reliable enough to distinguish between two different sightline types. Based on the linear relations between DIB equivalent width and reddening for σ and ζ sightlines, we divide DIBs into type I (where both linear relations are similar) and type II (where they are significantly different). The linear relation for ζ type sightlines always shows a higher slope and larger x-intercept parameter than the relation for σ sightlines. Scatter around the linear relation is reduced after the separation, but it does not vanish completely. This means that UV shielding is the dominant factor of the DIB equivalent width versus reddening relation shape for ζ sightlines, but in σ sightlines other physical parameters play a major role. No similar dependency on gas density, electron density, or turbulence was observed. A catalog of all observed interstellar lines is made public

  10. Physical Conditions of the Interstellar Medium in Star-forming Galaxies at z1.5

    Science.gov (United States)

    Hayashi, Masao; Ly, Chun; Shimasaku, Kazuhiro; Motohara, Kentaro; Malkan, Matthew A.; Nagao, Tohru; Kashikawa, Nobunari; Goto, Ryosuke; Naito, Yoshiaki

    2015-01-01

    We present results from Subaru/FMOS near-infrared (NIR) spectroscopy of 118 star-forming galaxies at z approximately equal to 1.5 in the Subaru Deep Field. These galaxies are selected as [O II] lambda 3727 emitters at z approximately equal to 1.47 and 1.62 from narrow-band imaging. We detect H alpha emission line in 115 galaxies, [O III] lambda 5007 emission line in 45 galaxies, and H Beta, [N II] lambda 6584, and [S II]lambda lambda 6716, 6731 in 13, 16, and 6 galaxies, respectively. Including the [O II] emission line, we use the six strong nebular emission lines in the individual and composite rest-frame optical spectra to investigate physical conditions of the interstellar medium in star-forming galaxies at z approximately equal to 1.5. We find a tight correlation between H alpha and [O II], which suggests that [O II] can be a good star formation rate (SFR) indicator for galaxies at z approximately equal to 1.5. The line ratios of H alpha / [O II] are consistent with those of local galaxies. We also find that [O II] emitters have strong [O III] emission lines. The [O III]/[O II] ratios are larger than normal star-forming galaxies in the local Universe, suggesting a higher ionization parameter. Less massive galaxies have larger [O III]/[O II] ratios. With evidence that the electron density is consistent with local galaxies, the high ionization of galaxies at high redshifts may be attributed to a harder radiation field by a young stellar population and/or an increase in the number of ionizing photons from each massive star.

  11. The energy principle in astrophysics and the instabilities of the interstellar medium

    International Nuclear Information System (INIS)

    Lachieze-Rey, Marc.

    1976-01-01

    The interstellar medium is considered as a two-fluid mixture (a heavy thermal gas and relativistic massless gas) to which magnetohydrodynamic equations are applied: the magnetic field and current vector obey Maxwell equations, both fluids obey the mass and momentum conservation equations, their thermodynamic behaviors being described with two polytropic γ and GAMMA indices. The simplest state that may be described is the stratified state assuming an isothermal medium (the temperature is defined by the eddy motion of the clouds), a horizontal magnetic field, and three proportional pressures (the gas pressure, cosmic ray pressure, and field pressure). A one-dimensional equilibrium is obtained (depending on the distance to the galactic plane). More generally a method of stability analysis is developed: the energy principle. The principle makes the equilibrium stability versus perturbation to depend on the sign of the potential energy variation dW(x) due to the perturbation. The general case involves the solution of two differential equations, and the case where p+GAMMA.P=p is reduced to solving only one equation. In the horizontal case the stability criterion for every horizontal state is written: γ>[p+P+P(magn)/P']-GAMMA.P/p, where p, P and P(magn) are the three pressures of the thermal gas, cosmic rays, and field respectively, and the tagged ' symbols are for the drivatives with respect to the heights above the galactic plane. The result is applied to the horizontal equilibrium, this state is shown to be rather more stable than the stratified one near the galactic plane but at higher levels, perturbations tend to rapidly develop. A stability principle is also presented for the more general equilibrium: gas + magnetic field + relativistic gas [fr

  12. Data Preservation in High Energy Physics

    Energy Technology Data Exchange (ETDEWEB)

    Mount, Richard; Brooks, Travis; /SLAC; Le Diberder, Francois; /Orsay, LAL; Dubois-Felsmann, Gregory; Neal, Homer; /SLAC; Bellis, Matt; /Stanford U.; Boehnlein, Amber; Votava, Margaret; White, Vicky; Wolbers, Stephen; /Fermilab; Konigsberg, Jacobo; /Florida U.; Roser, Robert; Snider, Rick; /Fermilab; Lucchesi, Donatella; /INFN, Padua; Denisov, Dmitri; /Fermilab; Soldner-Rembold, Stefan; /Manchester U.; Li, Qizhong; /Fermilab; Varnes, Erich; /Arizona U.; Jonckheere, Alan; /Fermilab; Gasthuber, Martin; Gulzow, Volker; /DESY /Marseille, CPPM /Dortmund U. /DESY /Gent U. /DESY, Zeuthen /KEK, Tsukuba /CC, Villeurbanne /CERN /INFN, Bari /Gjovik Coll. Engineering /Karlsruhe, Forschungszentrum /Beijing, Inst. High Energy Phys. /Carleton U. /Cornell U. /Rutherford

    2012-04-03

    Data from high-energy physics (HEP) experiments are collected with significant financial and human effort and are mostly unique. At the same time, HEP has no coherent strategy for data preservation and re-use. An inter-experimental Study Group on HEP data preservation and long-term analysis was convened at the end of 2008 and held two workshops, at DESY (January 2009) and SLAC (May 2009). This document is an intermediate report to the International Committee for Future Accelerators (ICFA) of the reflections of this Study Group. Large data sets accumulated during many years of detector operation at particle accelerators are the heritage of experimental HEP. These data sets offer unique opportunities for future scientific studies, sometimes long after the shut-down of the actual experiments: new theoretical input; new experimental results and analysis techniques; the quest for high-sensitivity combined analyses; the necessity of cross checks. In many cases, HEP data sets are unique; they cannot and most likely will not be superseded by data from newer generations of experiments. Once lost, or in an unusable state, HEP data samples cannot be reasonably recovered. The cost of conserving this heritage through a collaborative, target-oriented long-term data preservation program would be small, compared to the costs of past experimental projects or to the efforts to re-do experiments. However, this cost is not negligible, especially for collaborations close or past their end-date. The preservation of HEP data would provide today's collaborations with a secure way to complete their data analysis and enable them to seize new scientific opportunities in the coming years. The HEP community will benefit from preserved data samples through reanalysis, combination, education and outreach. Funding agencies would receive more scientific return, and a positive image, from their initial investment leading to the production and the first analysis of preserved data.

  13. Technical Support Document: Development of the Advanced Energy Design Guide for Medium Box Retail -- 50% Energy Savings

    Energy Technology Data Exchange (ETDEWEB)

    Hale, E. T.; Macumber, D. L.; Long, N. L.; Griffith, B. T.; Benne, K. S.; Pless, S. D.; Torcellini, P. A.

    2008-09-01

    This report provides recommendations that architects, designers, contractors, developers, owners, and lessees of medium box retail buildings can use to achieve whole-building energy savings of at least 50% over ASHRAE Standard 90.1-2004. The recommendations are given by climate zone and address building envelope, fenestration, lighting systems, HVAC systems, building automation and controls, outside air treatment, service water heating, plug loads, and photovoltaic systems. The report presents several paths to 50% savings, which correspond to different levels of integrated design. These are recommendations only, and are not part of a code or standard. The recommendations are not exhaustive, but we do try to emphasize the benefits of integrated building design, that is, a design approach that analyzes a building as a whole system, rather than as a disconnected collection of individually engineered subsystems.

  14. 1997 European School of high-energy physics. Proceedings

    International Nuclear Information System (INIS)

    Ellis, N.; Neubert, M.

    1998-01-01

    The European School of High-Energy Physics is intended to give young experimental physicists an introduction to the theoretical aspects of recent advances in elementary particle physics. These proceedings contain lectures on Field Theory, the Standard Model, Quantum Chromodynamics, Flavour Physics, Physics at LEP II and Heavy Ion physics, as well as reports on Cosmology, Dark Matter and a Quantum Theory of two-dimensional space-time. (orig.)

  15. 2nd CERN - CLAF School of High-energy Physics

    CERN Document Server

    Latin-American School of High Energy Physics; CLASHEP 2003; CLASHEP2003

    2006-01-01

    The CERN–CLAF School of High-Energy Physics is intended to give young physicists an introduction to the theoretical aspects of recent advances in elementary particle physics. These proceedings contain lectures on field theory and the Standard Model, quantum chromodynamics, physics beyond the Standard Model, and neutrino physics, as well as reports on heavy-ion physics, astrophysics, instrumentation, and trigger and dataacquisition systems.

  16. Energy-Efficient Boarder Node Medium Access Control Protocol for Wireless Sensor Networks

    Directory of Open Access Journals (Sweden)

    Abdul Razaque

    2014-03-01

    Full Text Available This paper introduces the design, implementation, and performance analysis of the scalable and mobility-aware hybrid protocol named boarder node medium access control (BN-MAC for wireless sensor networks (WSNs, which leverages the characteristics of scheduled and contention-based MAC protocols. Like contention-based MAC protocols, BN-MAC achieves high channel utilization, network adaptability under heavy traffic and mobility, and low latency and overhead. Like schedule-based MAC protocols, BN-MAC reduces idle listening time, emissions, and collision handling at low cost at one-hop neighbor nodes and achieves high channel utilization under heavy network loads. BN-MAC is particularly designed for region-wise WSNs. Each region is controlled by a boarder node (BN, which is of paramount importance. The BN coordinates with the remaining nodes within and beyond the region. Unlike other hybrid MAC protocols, BN-MAC incorporates three promising models that further reduce the energy consumption, idle listening time, overhearing, and congestion to improve the throughput and reduce the latency. One of the models used with BN-MAC is automatic active and sleep (AAS, which reduces the ideal listening time. When nodes finish their monitoring process, AAS lets them automatically go into the sleep state to avoid the idle listening state. Another model used in BN-MAC is the intelligent decision-making (IDM model, which helps the nodes sense the nature of the environment. Based on the nature of the environment, the nodes decide whether to use the active or passive mode. This decision power of the nodes further reduces energy consumption because the nodes turn off the radio of the transceiver in the passive mode. The third model is the least-distance smart neighboring search (LDSNS, which determines the shortest efficient path to the one-hop neighbor and also provides cross-layering support to handle the mobility of the nodes. The BN-MAC also incorporates a semi

  17. Energy-efficient boarder node medium access control protocol for wireless sensor networks.

    Science.gov (United States)

    Razaque, Abdul; Elleithy, Khaled M

    2014-03-12

    This paper introduces the design, implementation, and performance analysis of the scalable and mobility-aware hybrid protocol named boarder node medium access control (BN-MAC) for wireless sensor networks (WSNs), which leverages the characteristics of scheduled and contention-based MAC protocols. Like contention-based MAC protocols, BN-MAC achieves high channel utilization, network adaptability under heavy traffic and mobility, and low latency and overhead. Like schedule-based MAC protocols, BN-MAC reduces idle listening time, emissions, and collision handling at low cost at one-hop neighbor nodes and achieves high channel utilization under heavy network loads. BN-MAC is particularly designed for region-wise WSNs. Each region is controlled by a boarder node (BN), which is of paramount importance. The BN coordinates with the remaining nodes within and beyond the region. Unlike other hybrid MAC protocols, BN-MAC incorporates three promising models that further reduce the energy consumption, idle listening time, overhearing, and congestion to improve the throughput and reduce the latency. One of the models used with BN-MAC is automatic active and sleep (AAS), which reduces the ideal listening time. When nodes finish their monitoring process, AAS lets them automatically go into the sleep state to avoid the idle listening state. Another model used in BN-MAC is the intelligent decision-making (IDM) model, which helps the nodes sense the nature of the environment. Based on the nature of the environment, the nodes decide whether to use the active or passive mode. This decision power of the nodes further reduces energy consumption because the nodes turn off the radio of the transceiver in the passive mode. The third model is the least-distance smart neighboring search (LDSNS), which determines the shortest efficient path to the one-hop neighbor and also provides cross-layering support to handle the mobility of the nodes. The BN-MAC also incorporates a semi

  18. Advanced Detectors for Nuclear, High Energy and Astroparticle Physics

    CERN Document Server

    Das, Supriya; Ghosh, Sanjay

    2018-01-01

    The book presents high-quality papers presented at a national conference on ‘Advanced Detectors for Nuclear, High Energy and Astroparticle Physics’. The conference was organized to commemorate 100 years of Bose Institute. The book is based on the theme of the conference and provides a clear picture of basics and advancement of detectors for nuclear physics, high-energy physics and astroparticle physics together. The topics covered in the book include detectors for accelerator-based high energy physics; detectors for non-accelerator particle physics; nuclear physics detectors; detection techniques in astroparticle physics and dark matter; and applications and simulations. The book will be a good reference for researchers and industrial personnel working in the area of nuclear and astroparticle physics.

  19. EFFECT OF LOW ENERGY VERSUS MEDIUM ENERGY RADIAL SHOCK WAVE THERAPY IN THE TREATMENT OF CHRONIC PLANTER FASCIITIS

    Directory of Open Access Journals (Sweden)

    Khaled Z. Fouda

    2016-02-01

    Full Text Available Background: Plantar fasciitis (PF is the most common cause of heel pain and it can often be a challenge for clinicians to treat successfully. Radial shock wave therapy (RSWT has been introduced recently for treatment of musculoskeletal disorders. Different energy levels of shock wave therapy have been used in the literatures for treatment of PF with no clear settled parameters. Therefore, the purpose of this study was intended to investigate and compare the efficacy of two different energy levels of RSWT on PF patients. Methods: Forty patients having unilateral chronic PF were recruited for the study from orthopedic outpatient clinics of Cairo University hospitals and National Institute of Neuromotor System Cairo Egypt, with a mean age of (47.15±4.57 years. Patients were randomly assigned into two equal groups. Group (A treated with low intensity level of 1.6 bars (0.16 mJ/mm2 RSWT and group (B treated with medium intensity level of 4 bars (0.38 mJ/mm2 RSWT. Functional assessment of the foot based on Foot Function Index (FFI and Present pain intensity was measured during rest by Visual Analogue Scale (VAS. Results: There was as significant decreased in the total FFI scores from (118.42 ±6.51 to (81.37 ±3.46 for group (A and from (118.93 ±6.85 to (58.50 ±3.22 for group (B. Also regarding VAS Scores there was as significant decreased in the pain intensity from (5.11 ±0.41 to (2.85 ±0.31 for group (A and from (4.95 ±0.39 to (2.05 ±0.22 for group (B. Conclusion: Radial shock wave therapy is an effective modality that should be considered in the treatment of chronic PF, while the medium energy level RSWT is better than the low energy level RSWT in regarding to the measured treatment outcomes.

  20. Measurement of the time-resolved reflection matrix for enhancing light energy delivery into a scattering medium.

    Science.gov (United States)

    Choi, Youngwoon; Hillman, Timothy R; Choi, Wonjun; Lue, Niyom; Dasari, Ramachandra R; So, Peter T C; Choi, Wonshik; Yaqoob, Zahid

    2013-12-13

    Multiple scatterings occurring in a turbid medium attenuate the intensity of propagating waves. Here, we propose a method to efficiently deliver light energy to the desired target depth in a scattering medium. We measure the time-resolved reflection matrix of a scattering medium using coherent time-gated detection. From this matrix, we derive and experimentally implement an incident wave pattern that optimizes the detected signal corresponding to a specific arrival time. This leads to enhanced light delivery at the target depth. The proposed method will lay a foundation for efficient phototherapy and deep-tissue in vivo imaging in the near future.

  1. An Exploratory Energy Analysis of Electrochromic Windows in Small and Medium Office Buildings - Simulated Results Using EnergyPlus

    Energy Technology Data Exchange (ETDEWEB)

    Belzer, David B.

    2010-08-01

    The Department of Energy’s (DOE) Building Technologies Program (BTP) has had an active research program in supporting the development of electrochromic (EC) windows. Electrochromic glazings used in these windows have the capability of varying the transmittance of light and heat in response to an applied voltage. This dynamic property allows these windows to reduce lighting, cooling, and heating energy in buildings where they are employed. The exploratory analysis described in this report examined three different variants of EC glazings, characterized by the amount of visible light and solar heat gain (as measured by the solar heat gain coefficients [SHGC] in their “clear” or transparent states). For these EC glazings, the dynamic range of the SHGC’s between their “dark” (or tinted) state and the clear state were: (0.22 - 0.70, termed “high” SHGC); (0.16 - 0.39, termed “low” SHGC); and (0.13 - 0.19; termed “very low” SHGC). These glazings are compared to conventional (static) glazing that meets the ASHRAE Standard 90.1-2004 energy standard for five different locations in the U.S. All analysis used the EnergyPlus building energy simulation program for modeling EC windows and alternative control strategies. The simulations were conducted for a small and a medium office building, where engineering specifications were taken from the set of Commercial Building Benchmark building models developed by BTP. On the basis of these simulations, total source-level savings in these buildings were estimated to range between 2 to 7%, depending on the amount of window area and building location.

  2. Participation in High Energy Physics at the University of Chicago

    Energy Technology Data Exchange (ETDEWEB)

    Martinec, Emil J. [Univ. of Chicago, IL (United States). Enrico Fermi Inst.

    2013-06-27

    This report covers research at the University of Chicago in theoretical high energy physics and its connections to cosmology, over the period Nov. 1, 2009 to April 30, 2013. This research is divided broadly into two tasks: Task A, which covers a broad array of topics in high energy physics; and task C, primarily concerned with cosmology.

  3. A medium-chain fatty acid as an alternative energy source in mouse preimplantation development.

    Science.gov (United States)

    Yamada, Mitsutoshi; Takanashi, Kazumi; Hamatani, Toshio; Hirayama, Akiyoshi; Akutsu, Hidenori; Fukunaga, Tomoko; Ogawa, Seiji; Sugawara, Kana; Shinoda, Kosaku; Soga, Tomoyoshi; Umezawa, Akihiro; Kuji, Naoaki; Yoshimura, Yasunori; Tomita, Masaru

    2012-01-01

    To further optimize the culturing of preimplantation embryos, we undertook metabolomic analysis of relevant culture media using capillary electrophoresis time-of-flight mass spectrometry (CE-TOFMS). We detected 28 metabolites: 23 embryo-excreted metabolites including 16 amino acids and 5 media-derived metabolites (e.g., octanoate, a medium-chain fatty acid (MCFA)). Due to the lack of information on MCFAs in mammalian preimplantation development, this study examined octanoate as a potential alternative energy source for preimplantation embryo cultures. No embryos survived in culture media lacking FAs, pyruvate, and glucose, but supplementation of octanoate rescued the embryonic development. Immunoblotting showed significant expression of acyl-CoA dehydrogenase and hydroxyacyl-CoA dehydrogenase, important enzymes for ß-oxidation of MCFAs, in preimplantation embryo. Furthermore, CE-TOFMS traced [1-(13)C(8)] octanoate added to the culture media into intermediate metabolites of the TCA cycle via ß-oxidation in mitochondria. These results are the first demonstration that octanoate could provide an efficient alternative energy source throughout preimplantation development.

  4. Cross correlation analysis of medium energy gamma rays for the northern hemisphere

    International Nuclear Information System (INIS)

    Long, J.; Zanrosso, E.; Zych, A.D.; White, R.S.

    1982-01-01

    Data obtained with the UCR gamma telescope have been analyzed using the cross-correlation method. The observations extended over 37.5 hr from 0930 UT, 30 Sept. to 2300 UT, 1 oct. 1978 at 32deg N. Lat. (Palestine, Texas). The Crab Nebula- Anticenter region was observed on consecutive days. The telescope's wide field-of-view permitted the search for a number of other medium energy (1-30 MeV) source candidates. As the telescope swept the sky, the count rates for fixed celestial directions were correlated with the expected response as a function of time and telescope geometry. Similar correlations were carried out for sources measured in the laboratory and computer-simulated sources. In the correlation method the time independence and azimuthal symmetry of the atmospheric and cosmic diffuse backgrounds provide zero correlation. In contrast, a celestial source produces an asymmetric response with respect to the azimuthal direction which varies predictably in time to give a positive correlation. Preliminary correlation skymaps of the Anticenter region are presented and their statistical significance discussed. An energy spectrum obtained from the ''correlated counts'' is compared with measurements by other methods

  5. TECHNICAL AND ECONOMIC FEASIBILITY STUDY FOR DEVELOPMENT OF SMALL AND MEDIUM-SCALE GRID CONNECTED RENEWABLE ENERGY IN RWANDA

    OpenAIRE

    NTIHINYUZWA, Isaac

    2012-01-01

    This project work is focused on the economic and feasibility study for small and medium scale renewable energies available in Rwanda to determine the requirements in terms of infrastructure, policy and demonstrating interesting potentials of off and on grid connected renewable energy by analyzing them referring to technical and economic feasibility criteria. In addition, this survey data will help to understand how the energy projects will be implemented through private and public partnership...

  6. The simple physics of energy use

    CERN Document Server

    Rez, Peter

    2017-01-01

    In industrially developed countries, energy is used primarily for three things—maintaining a comfortable environment in buildings, transporting people and goods and manufacturing products. Each accounts for about one-third of the total primary energy use. Controlling the indoor temperature accounts for most of the energy use in buildings. Therefore, this strongly depends on the local climate. Electricity accounts for a high proportion of the energy transfer in developed countries. The problem is that electricity cannot easily be stored, and that supply therefore has to match demand. This makes the use of intermittent renewables such as solar and wind particularly challenging. Transportation efficiency can be measured by the energy used to move a person or a tonne of freight over a given distance, but there is also the journey time to consider. Transportation, with the exception of trains, is constrained by the energy density and convenience of fuels, and it is hard to beat liquid hydrocarbons as fuels. Mate...

  7. High energy physics division semiannual report of research activities

    International Nuclear Information System (INIS)

    Schoessow, P.; Moonier, P.; Talaga, R.; Wagner, R.

    1991-08-01

    This report describes the research conducted in the High Energy Physics Division of Argonne National Laboratory during the period of January 1, 1991--June 30, 1991. Topics covered here include experimental and theoretical particle physics, advanced accelerator physics, detector development, and experimental facilities research. Lists of division publications and colloquia are included

  8. Bridging the energy gap through small and medium sized nuclear reactors in India

    International Nuclear Information System (INIS)

    Srivastava, R.

    1987-01-01

    India is the only country in the world which is employing small sized nuclear reactors for its nuclear power programme. It has now embarked on a programme of augmenting the contribution of the nuclear power by way of employing both medium and small sized nuclear reactors in the next 15 years. This paper discusses the Indian experience and its efforts for industrial mobilisation for rapidly constructing 235/500 MWe nuclear reactor units in a period of about 8 to 9 years. The current energy situation in India and this context the near term role of nuclear power for supplementing the existing sources of commercial energy have been evaluated. Nuclear power has reached such a stage of maturity whereby it has now become a commercially viable source of electricity and it could be utilised on large scale to bridge the energy gap. At present six reactor units of 210/235 MWe capacity are in operation and eight more are in different stages of construction. While we are continuing with the construction of 235 MWe units, a programme of being pursued to construct 550 MWe capacity reactor units from midnineties onwards. This has become possible with the strengthening of regional electricity grids and simultaneous efforts undertaken for augmentation of fuel supply, heavy water production and industrial infrastructure. For a developing country like India, implementation of a sizable nuclear power programme has posed certain special challenges as major inputs are required to be made available with indigeneous efforts. This paper discusses such challenges and presents the ways and means adopted to surmount them. Other developing countries with conditions comparable to those in India could benefit from Indian experience in this regard. This paper also proposes India's willingness to cooperate with other countries for exchange of information and assistance in terms of technical knowhow. (author)

  9. Theoretical study on pp → pnπ+ reaction at medium energies

    International Nuclear Information System (INIS)

    Ouyang, Zhen; Xie, Jujun; Zou, Bingsong; Xu, Hushan

    2009-01-01

    The pp → pnπ + reaction is a channel with the largest total cross section for pp collision in COSY/CSR energy region. In this work, we investigate individual contributions from various N* and Δ* resonances with mass up to about 2 GeV for the pp → pnπ + reaction. We extend a resonance model, which can reproduce the observed total cross section quite well, to give theoretical predictions of various differential cross sections for the present reaction at T p = 2.88 GeV. It could serve as a reference for identifying new physics in the future experiments at HIRFL-CSR. (author)

  10. Energy in physics, war and peace

    Energy Technology Data Exchange (ETDEWEB)

    Wood, L.; Mark, H.

    1988-01-01

    The first part of this volume comprises papers dealing with basic areas of physics ranging from relativistic radiative hydrodynamics through nuclear decay selection rules to stellar X-ray sources and elemental synthesis. The second part presents contributions which address various aspects of physics applied to the creation of military strength, such as the history of nuclear explosives and the development of beam weaponry. The last part contains contributions which relate to some of the areas of physics applied to peaceful purposes in which Teller has worked.

  11. Summaries of FY 1977, research in high energy physics

    Energy Technology Data Exchange (ETDEWEB)

    1977-10-01

    The U.S. Department of Energy, through the Office of Energy Research and the Division of High Energy and Nuclear Physics, provides approximately 90% of the total federal support for high energy physics research effort in the United States. The High Energy Physics Program primarily utilizes four major U.S. high energy accelerator facilities and over 50 universities under contract to do experimental and theoretical investigations on the properties, structure and transformation of matter and energy in their most basic forms. This compilation of research summaries is intended to present a convenient report of the scope and nature of high energy physics research presently funded by the U.S. Department of Energy. The areas covered include conception, design, construction, and operation of particle accelerators; experimental research using the accelerators and ancillary equipment; theoretical research; and research and development programs to advance accelerator technology, particle detector systems, and data analysis capabilities. Major concepts and experimental facts in high energy physics have recently been discovered which have the promise of unifying the fundamental forces and of understanding the basic nature of matter and energy. The summaries contained in this document were reproduced in essentially the form submitted by contractors as of January 1977.

  12. Summaries of FY 1977, research in high energy physics

    International Nuclear Information System (INIS)

    1977-10-01

    The U.S. Department of Energy, through the Office of Energy Research and the Division of High Energy and Nuclear Physics, provides approximately 90% of the total federal support for high energy physics research effort in the United States. The High Energy Physics Program primarily utilizes four major U.S. high energy accelerator facilities and over 50 universities under contract to do experimental and theoretical investigations on the properties, structure and transformation of matter and energy in their most basic forms. This compilation of research summaries is intended to present a convenient report of the scope and nature of high energy physics research presently funded by the U.S. Department of Energy. The areas covered include conception, design, construction, and operation of particle accelerators; experimental research using the accelerators and ancillary equipment; theoretical research; and research and development programs to advance accelerator technology, particle detector systems, and data analysis capabilities. Major concepts and experimental facts in high energy physics have recently been discovered which have the promise of unifying the fundamental forces and of understanding the basic nature of matter and energy. The summaries contained in this document were reproduced in essentially the form submitted by contractors as of January 1977

  13. Applying Physics to Clean Energy Needs

    Science.gov (United States)

    Environmental Science and Technology, 1975

    1975-01-01

    Solar and ocean thermal energy sources offer real potential for an environmentally clean fuel by the year 2000. A review of current research contracts relating to ocean-thermal energy, cost requirements of plant construction and uses of the electricity produced, such as synthesizing ammonia and synthetic fuels, are discussed. (BT)

  14. High energy physics in our society

    International Nuclear Information System (INIS)

    Crozon, M.

    1984-09-01

    General survey of interactions between elementary particle physics and our society. The problem is studied for different aspects of our society: men and education, economics, technics, politics, international affairs, honours, myths.. [fr

  15. Probing physics at extreme energies with cosmic ultra-high energy ...

    Indian Academy of Sciences (India)

    Home; Journals; Pramana – Journal of Physics; Volume 60; Issue 2. Probing physics at extreme energies with cosmic ultra-high energy radiation ... Their existence triggered a flurry of theoretical explanations ranging from conventional shock acceleration to particle physics beyond the standard model (SM) and processes ...

  16. Sustainable Energy Landscape: Implementing Energy Transition in the Physical Realm

    NARCIS (Netherlands)

    Stremke, S.

    2015-01-01

    Since the beginning of the new millennium, the concept of “energy landscape” is being discussed by academia from the environmental design domain while more and more practitioners have been contributing to sustainable energy transition. Yet, there remains some ambiguity as to what exactly is meant

  17. Awards for high-energy physics at CERN

    CERN Multimedia

    2005-01-01

    Dave Barney of CMS with the Outreach Prize awarded by the European Physical Society. The European Physical Society (EPS) has awarded two prizes to CERN physicists. Dave Barney of CMS shared his Outreach Prize with Peter Kalmus of Queen Mary, University of London. This prize is awarded for communicating particle physics to the public. The NA31 collaboration and its spokesman, Heinrich Wahl, received the 2005 High Energy and Particle Physics Prize for their work on CP violation undertaken at CERN.

  18. 1994 European school of high-energy physics. Proceedings

    International Nuclear Information System (INIS)

    Ellis, N.; Gavela, B.

    1995-01-01

    The European School of High-Energy Physics is intended to give young experimental physicists an introduction to the theoretical aspects of recent advances in elementary particle physics. These Proceedings contain lectures on field theory, the Standard Model, physics beyond the Standard Model, Quantum Chromodynamics and CP violation, as well as reports on the search for gravitational waves, stellar death and accounts of particle physics at CERN and JINR. Two local subjects are also treated: Pompeii and Mount Vesuvius. (orig.)

  19. Medium energy heavy ion accelerator (14 UD pelletron) facility (BARC-TIFR): report for the period July 1989 - December 1992

    International Nuclear Information System (INIS)

    Eswaran, M.A.; Tandon, P.N.

    1993-01-01

    A medium energy heavy ion accelerator facility has been set up jointly by Bhabha Atomic Research Centre (BARC) and Tata Institute of Fundamental Research (TIFR) at Bombay. It is based on a 14 MV tandem accelerator (14 UD Pelletron) supplied by Electrostatic International Incorporated, USA. The facility was commissioned in 1988, however the accelerator began to be utilized regularly for experimental programmes from June 1989. Since then a number of research programmes have been undertaken. Some of these are: nuclear structure at high excitations through heavy ion resonances, nuclear structure studies at high angular momentum, elastic and inelastic scattering and transfer reactions, heavy-ion fusion and fusion-fission reactions, hyperfine interaction studies, channeling and blocking studies, and atomic physics studies of highly charged ions. This is the first comprehensive progress report on research and development activities based on the pelletron accelerator facility. It covers the period from June 1989 to December 1992. The report is presented in the form of 82 research papers. (M.G.B.)

  20. Section for nuclear physics and energy physics - Annual report 1989

    International Nuclear Information System (INIS)

    1990-04-01

    The experimental activities in nuclear physics have in 1989 mainly been centered around the cyclotron laboratory with the Scanditronic MC-35 cyclotron. The installation of the CACTUS multidetector system has been completed. With 8 particle telescopes, 28 NaI detectors and 2 Ge detectors, this experimental arrangement represents a major improvement compared to earlier set-ups in the laboratory. Theoretical studies of manybody problems, and nuclear structure and reactions have continued. The study of problems related to the foundations of quantum mechanics has also been persued

  1. 1995 European school of high-energy physics. Proceedings

    International Nuclear Information System (INIS)

    Ellis, N.; Neubert, M.

    1996-01-01

    The European School of High-Energy Physics is intended to give young experimentalists an introduction to the theoretical aspects of recent advances in elementary particle physics. These proceedings contain lectures on Field Theory, the Standard Model, Physics beyond the Standard Model, Quantum Chromodynamics and Deep Inelastic Scattering, B-Physics and CP Violation, Neutrino Oscillations, Dark Matter, Experimental Techniques, as well as reports on Heavy Ions and Collider Physics and an account of particle physics at JINR. Two local subjects are also treated: Conditions for Science in Russia, and Search for Heavy Elements. (orig.)

  2. University of Arizona High Energy Physics Program at the Cosmic Frontier 2014-2016

    Energy Technology Data Exchange (ETDEWEB)

    abate, alex [Univ. of Arizona, Tucson, AZ (United States); cheu, elliott [Univ. of Arizona, Tucson, AZ (United States)

    2016-10-24

    This is the final technical report from the University of Arizona High Energy Physics program at the Cosmic Frontier covering the period 2014-2016. The work aims to advance the understanding of dark energy using the Large Synoptic Survey Telescope (LSST). Progress on the engineering design of the power supplies for the LSST camera is discussed. A variety of contributions to photometric redshift measurement uncertainties were studied. The effect of the intergalactic medium on the photometric redshift of very distant galaxies was evaluated. Computer code was developed realizing the full chain of calculations needed to accurately and efficiently run large-scale simulations.

  3. University of Arizona High Energy Physics Program at the Cosmic Frontier 2014-2016

    International Nuclear Information System (INIS)

    Abate, Alex; Cheu, Elliott

    2016-01-01

    This is the final technical report from the University of Arizona High Energy Physics program at the Cosmic Frontier covering the period 2014-2016. The work aims to advance the understanding of dark energy using the Large Synoptic Survey Telescope (LSST). Progress on the engineering design of the power supplies for the LSST camera is discussed. A variety of contributions to photometric redshift measurement uncertainties were studied. The effect of the intergalactic medium on the photometric redshift of very distant galaxies was evaluated. Computer code was developed realizing the full chain of calculations needed to accurately and efficiently run large-scale simulations.

  4. Diagnosis and dynamics in a simple low energy medium current electron beam channel

    Science.gov (United States)

    Marghitu, S.; Marghitu, O.; Oproiu, C.; Marin, G.; Scarlat, Fl.

    2004-05-01

    We present a simple experimental setup and an associated method enabling both the non-destructive diagnosis and the calculation of the beam evolution in a low energy medium current electron beam channel, where the space-charge and emittance effects are comparable. The diagnosis makes use of an axially symmetric magnetic lens while a second lens is added to increase the flexibility in the beam processing. The paper emphasizes the three steps involved in the method: the evaluation of the lenses' magnetic field by numerical simulation, the beam diagnosis, and the computation of the beam envelope. The calculation of the magnetic field is based on the finite element method. Subsequently, the beam parameters at the electron source exit - emittance and cross-over radius and position - are found with the modified three gradient method. Finally, the beam dynamics are modeled with the K-V equation adapted for the particular case of axial symmetry. The results obtained in this paper can be used to optimize technological processes, such as welding, hardening, cladding, and surface alloying.

  5. Strain relaxation of CdTe on Ge studied by medium energy ion scattering

    Energy Technology Data Exchange (ETDEWEB)

    Pillet, J.C., E-mail: jean-christophe.pillet@cea.fr [Univ. Grenoble Alpes, CEA, LETI, MINATEC campus, F38000 Grenoble (France); CEA, LETI, Département Optique et Photonique, F38054 Grenoble (France); Pierre, F. [Univ. Grenoble Alpes, CEA, LETI, MINATEC campus, F38000 Grenoble (France); CEA, LETI, Service de Caractérisation des Matériaux et Composants, F38054 Grenoble (France); Jalabert, D. [Univ. Grenoble Alpes, CEA, LETI, MINATEC campus, F38000 Grenoble (France); CEA-INAC/UJF-Grenoble 1 UMR-E, SP2M, LEMMA, Minatec Grenoble F-38054 (France)

    2016-10-01

    We have used the medium energy ion scattering (MEIS) technique to assess the strain relaxation in molecular-beam epitaxial (MBE) grown CdTe (2 1 1)/Ge (2 1 1) system. A previous X-ray diffraction study, on 10 samples of the same heterostructure having thicknesses ranging from 25 nm to 10 μm has allowed the measurement of the strain relaxation on a large scale. However, the X-ray diffraction measurements cannot achieve a stress measurement in close proximity to the CdTe/Ge interface at the nanometer scale. Due to the huge lattice misfit between the CdTe and Ge, a high degree of disorder is expected at the interface. The MEIS in channeling mode is a good alternative in order to profile defects with a high depth resolution. For a 21 nm thick CdTe layer, we observed, at the interface, a high density of Cd and/or Te atoms moved from their expected crystallographic positions followed by a rapid recombination of defects. Strain relaxation mechanisms in the vicinity of the interface are discussed.

  6. Nuclear calculation for employing medium enrichment in reactors of Japan Atomic Energy Research Institute

    International Nuclear Information System (INIS)

    Miyasaka, Yasuhiko

    1979-01-01

    The fuel used for the research reactors of Japan Atomic Energy Research Institute (JAERI) is presently highly enriched uranium of 93%. However, the U.S. government (the supplier of fuel) is claiming to utilize low or medium enriched uranium from the viewpoint of resistivity to nuclear proliferation, and the availability of highly enriched uranium is becoming hard owing to the required procedure. This report is described on the results of nuclear calculation which is the basis of fuel design in the countermeasures to the reduction of enrichment. The basic conception in the reduction of enrichment is three-fold: to lower the latent potential of nuclear proliferation as far as possible, to hold the present reactor performance as far as possible, and to limit the reduction in the range which is not accompanied by the modification of reactor core construction and cooling system. This time, the increase of the density and thickness of fuel plates and the effect of enrichment change to 45% on reactivity and neutron flux were investigated. The fuel of UAl sub(x) - Al system was assumed, which was produced by powder metallurgical method. The results of investigations on JRR-2 and JMTR reactors revealed that 45% enriched fuel does not affect the performances much. However, deterioration of the performances is not neglegible if further reduction is needed. In future, the influence of the burn-up effect of fuel on the life of reactor cores must be investigated. (Wakatsuki, Y.)

  7. Quantitative considerations in medium energy ion scattering depth profiling analysis of nanolayers

    Energy Technology Data Exchange (ETDEWEB)

    Zalm, P.C.; Bailey, P. [International Institute for Accelerator Applications, University of Huddersfield, Queensgate, Huddersfield HD1 3DH (United Kingdom); Reading, M.A. [Physics and Materials Research Centre, University of Salford, Salford M5 4WT (United Kingdom); Rossall, A.K. [International Institute for Accelerator Applications, University of Huddersfield, Queensgate, Huddersfield HD1 3DH (United Kingdom); Berg, J.A. van den, E-mail: j.vandenberg@hud.ac.uk [International Institute for Accelerator Applications, University of Huddersfield, Queensgate, Huddersfield HD1 3DH (United Kingdom)

    2016-11-15

    The high depth resolution capability of medium energy ion scattering (MEIS) is becoming increasingly relevant to the characterisation of nanolayers in e.g. microelectronics. In this paper we examine the attainable quantitative accuracy of MEIS depth profiling. Transparent but reliable analytical calculations are used to illustrate what can ultimately be achieved for dilute impurities in a silicon matrix and the significant element-dependence of the depth scale, for instance, is illustrated this way. Furthermore, the signal intensity-to-concentration conversion and its dependence on the depth of scattering is addressed. Notably, deviations from the Rutherford scattering cross section due to screening effects resulting in a non-coulombic interaction potential and the reduction of the yield owing to neutralization of the exiting, backscattered H{sup +} and He{sup +} projectiles are evaluated. The former mainly affects the scattering off heavy target atoms while the latter is most severe for scattering off light target atoms and can be less accurately predicted. However, a pragmatic approach employing an extensive data set of measured ion fractions for both H{sup +} and He{sup +} ions scattered off a range of surfaces, allows its parameterization. This has enabled the combination of both effects, which provides essential information regarding the yield dependence both on the projectile energy and the mass of the scattering atom. Although, absolute quantification, especially when using He{sup +}, may not always be achievable, relative quantification in which the sum of all species in a layer adds up to 100%, is generally possible. This conclusion is supported by the provision of some examples of MEIS derived depth profiles of nanolayers. Finally, the relative benefits of either using H{sup +} or He{sup +} ions are briefly considered.

  8. High resolution medium energy ion scattering study of silicon oxidation and oxy nitridation

    International Nuclear Information System (INIS)

    Gusev, E.P.; Lu, H.C.; Garfunkel, E.; Gustafsson, T.

    1998-01-01

    Full text: Silicon oxide is likely to remain the material of choice for gate oxides in microelectronics for the foreseeable future. As device become ever smaller and faster, the thickness of these layers in commercial products is predicted to be less than 50 Angstroms in just a few years. An understanding of such devices will therefore likely to be based on microscopic concepts and should now be investigated by atomistic techniques. With medium energy ion scattering (MEIS) using an electrostatic energy analyzer, depth profiling of thin (<60 Angstroms) silicon oxide films on Si(100) with 3 - 5 Angstroms depth resolution in the near region has been done. The growth mechanism of thin oxide films on Si(100) has been studied, using sequential oxygen isotope exposures. It is found that the oxide films are stoichiometric to within approx. 10 Angstroms of the interface. It is also found that the oxidation reactions occur at the surface, in the transition region and at interface, with only the third region being included in the conventional (Deal-Grove) model for oxide formation. Nitrogen is sometimes added to gate oxides, as it has been found empirically that his improves some of the electrical properties. The role, location and even the amount of nitrogen that exists in such films are poorly understood, and represent interesting analytical challenges. MEIS data will be presented that address these questions, measured for a number of different processing conditions. We have recently demonstrated how to perform nitrogen nano-engineering in such ultrathin gate dielectrics, and these results will also be discussed

  9. High Energy Physics at Tufts University

    International Nuclear Information System (INIS)

    Milburn, R.H.; Schneps, J.

    1991-01-01

    This report discusses the following: fermilab fixed target experiments; photoproduction at 20 GeV: SLAC BC72-75; soudan 2 nucleon decay project; physics at the antiproton-proton collider at √s = 1.8 TeV; Designing the solenoidal detector for the supercollider; charm physics at LEP in OPAL; neutrino telescope proposal; general kinematic description of polarization in scattering processes; polarization in inclusive hyperon production and QCD subprocesses; measuring quark helicity underlying hadronic jets; scattering in extended skyrmion models and spin dependence; the diquark-quark model of the excited baryons; computation and networking; and the science and technology center

  10. Evaluation of Physical Capture Efficiency and Disinfection Capability of a Novel Iodinated Filter Medium

    National Research Council Canada - National Science Library

    Ratnesar, Shanna; Wu, Chang-Yu; Wander, Joe; Lundgren, Dale; Farrah, Sam; Wanakule, Prinda; Blackburn, Matthew; Lan, Mei-Fang

    2006-01-01

    ...% that of the glass-fiber HEPA filter (0.0054 in H2O/(in/min) vs 0.065 in H2O/(in/min)). Biological disinfection by the medium was evaluated using Micrococcus luteus and Echerichia coli vegetative bacterial cells...

  11. Medium and Short Wave RF Energy Harvester for Powering Wireless Sensor Networks.

    Science.gov (United States)

    Leon-Gil, Jesus A; Cortes-Loredo, Agustin; Fabian-Mijangos, Angel; Martinez-Flores, Javier J; Tovar-Padilla, Marco; Cardona-Castro, M Antonia; Morales-Sánchez, Alfredo; Alvarez-Quintana, Jaime

    2018-03-03

    Internet of Things (IoT) is an emerging platform in which every day physical objects provided with unique identifiers are connected to the Internet without requiring human interaction. The possibilities of such a connected world enables new forms of automation to make our lives easier and safer. Evidently, in order to keep billions of these communicating devices powered long-term, a self-sustainable operation is a key point for realization of such a complex network. In this sense, energy-harvesting technologies combined with low power consumption ICs eliminate the need for batteries, removing an obstacle to the success of the IoT. In this work, a Radio Frequency (RF) energy harvester tuned at AM broadcast has been developed for low consumption power devices. The AM signals from ambient are detected via a high-performance antenna-free LC circuit with an efficiency of 3.2%. To maximize energy scavenging, the RF-DC conversion stage is based on a full-wave Cockcroft-Walton voltage multiplier (CWVM) with efficiency up to 90%. System performance is evaluated by rating the maximum power delivered into the load via its output impedance, which is around 62 μW, although power level seems to be low, it is able to power up low consumption devices such as Leds, portable calculators and weather monitoring stations.

  12. Medium and Short Wave RF Energy Harvester for Powering Wireless Sensor Networks

    Directory of Open Access Journals (Sweden)

    Jesus A. Leon-Gil

    2018-03-01

    Full Text Available Internet of Things (IoT is an emerging platform in which every day physical objects provided with unique identifiers are connected to the Internet without requiring human interaction. The possibilities of such a connected world enables new forms of automation to make our lives easier and safer. Evidently, in order to keep billions of these communicating devices powered long-term, a self-sustainable operation is a key point for realization of such a complex network. In this sense, energy-harvesting technologies combined with low power consumption ICs eliminate the need for batteries, removing an obstacle to the success of the IoT. In this work, a Radio Frequency (RF energy harvester tuned at AM broadcast has been developed for low consumption power devices. The AM signals from ambient are detected via a high-performance antenna-free LC circuit with an efficiency of 3.2%. To maximize energy scavenging, the RF-DC conversion stage is based on a full-wave Cockcroft–Walton voltage multiplier (CWVM with efficiency up to 90%. System performance is evaluated by rating the maximum power delivered into the load via its output impedance, which is around 62 μW, although power level seems to be low, it is able to power up low consumption devices such as Leds, portable calculators and weather monitoring stations.

  13. High Energy Physics. Ultimate Structure of Matter and Energy.

    Energy Technology Data Exchange (ETDEWEB)

    1979-04-01

    Some of the principle discoveries and insights and their development up to today are sketched. It is shown how one layer after another was discovered by penetrating farther into the structure of matter. covered are the mounting energy scale, discoveries at thigh energy frontier, the families of quarks and leptons, the four forces of nature, some achievements of the past few years, particle accelerators and experimental apparatus. A glossary of terms is included.

  14. High energy physics. Ultimate structure of matter and energy

    International Nuclear Information System (INIS)

    1979-04-01

    Some of the principle discoveries and insights and their development up to today are sketched. It is shown how one layer after another was discovered by penetrating farther into the structure of matter. Covered are the mounting energy scale, discoveries at high energy frontier, the families of quarks and leptons, the four forces of nature, some achievements of the past few years, particle accelerators and experimental apparatus. A glossary of terms is included

  15. Art imitating high-energy physics

    CERN Multimedia

    Abbott, A

    2000-01-01

    Artists have been brought to CERN to learn about particle physics. In response they will each create an original piece of art which will be exhibited in "Signatures of the Invisible", a roadshow that will visit galleries across Europe next year (1/2 page).

  16. 16th Workshop on High Energy Spin Physics

    CERN Document Server

    2016-01-01

    The Workshop will cover a wide range of spin phenomena at high and intermediate energies such as: recent experimental data on spin physics the nucleon spin structure and GPD's spin physics and QCD spin physics in the Standard Model and beyond T-odd spin effects polarization and heavy ion physics spin in gravity and astrophysics the future spin physics facilities spin physics at NICA polarimeters for high energy polarized beams acceleration and storage of polarized beams the new polarization technology related subjects The Workshop will be held in the Bogoliubov Laboratory of Theoretical Physics of the Joint Institute for Nuclear Research, 141980 Dubna, Moscow Region, Russia. The program of the workshop will include plenary and parallel (if necessary) sessions. Plenary sessions will be held in the Conference Hall. Parallel sections will take place in the same building. There will be invited talks (up to 40 min) and original reports (20 min). The invited speakers will present new experimental and theoretical re...

  17. Feasibility study analysis for multi-function dual energy oven (case study: tapioca crackers small medium enterprise)

    Science.gov (United States)

    Soraya, N. W.; El Hadi, R. M.; Chumaidiyah, E.; Tripiawan, W.

    2017-12-01

    Conventional drying process is constrained by weather (cloudy / rainy), and requires wide drying area, and provides low-quality product. Multi-function dual energy oven is the appropriate technology to solve these problems. The oven uses solar thermal or gas heat for drying various type of products, including tapioca crackers. Investment analysis in technical, operational, and financial aspects show that the multi-function dual energy oven is feasible to be implemented for small medium enterprise (SME) processing tapioca crackers.

  18. Physical conditions of the interstellar medium in high-redshift submillimetre bright galaxies

    Science.gov (United States)

    Yang, Chentao

    2017-12-01

    The discovery of a population of high- redshift dust-obscured submillimeter galaxies (SMGs) from ground-based submm cameras has revolutionised our understanding of galaxy evolution and star formation in extreme conditions. They are the strongest starbursts in the Universe approaching the Eddington limit and are believed to be the progenitors of the most massive galaxies today. However, theoretical models of galaxy evolution have even been challenged by a large number of detections of high-redshift SMGs. A very few among them are gravitationally lensed by an intervening galaxy. Recent wide-area extragalactic surveys have discovered hundreds of such strongly lensed SMGs, opening new exciting opportunities for observing the interstellar medium in these exceptional objects. We have thus carefully selected a sample of strongly gravitational lensed SMGs based on the submillimeter flux limit from the Herschel-ATLAS sample. Using IRAM telescopes, we have built a rich H2O-line-detected sample of 16 SMGs. We found a close-to-linear tight correlation between the H2O line and total infrared luminosity. This indicates the importance of far-IR pumping to the excitation of the H2O lines. Using a far-IR pumping model, we have derived the physical properties of the H2O gas and the dust. We showed that H2O lines trace a warm dense gas that may be closely related to the active star formation. Along with the H2O lines, several H2O+ lines have also been detected in three of our SMGs. We also find a tight correlation between the luminosity of the lines of H2O and H2O+ from local ULIRGs to high-redshift SMGs. The flux ratio between H2O+ and H2O suggests that cosmic rays from strong star forming activities are possibly driving the related oxygen chemistry. Another important common molecular gas tracer is the CO line. We have observed multiple transitions of the CO lines in each of our SMGs with IRAM 30m telescope. By analysing the CO line profile, we discovered a significant differential

  19. Recent developments in high energy physics

    Indian Academy of Sciences (India)

    (b) Gallex and SAGE [5,6]: The two detectors GALLEX and SAGE are using gallium. (30 tons and 60 tons respectively) as the sensitive target for the experiment. Experiments are sensitive to solar neutrinos from pp, Be and B (with detection threshold energy of neutrino as 0.2 MeV). The GALLEX and SAGE detectors have ...

  20. Perspective in high energy physics instrumentation

    International Nuclear Information System (INIS)

    Rossi, L.

    1995-10-01

    The discovery potential of the next generation of particle accelerators, and in particular of the large hadron collider (LHC), can only be fully exploited by very sophisticated particle detectors. The basics of detectors for momentum and energy measurement is here presented together with a recollection of recent developments which are relevant for use at high luminosity accelerators

  1. ELEC-2005: Electronics in High Energy Physics

    CERN Multimedia

    Monique Duval

    2004-01-01

    ELEC-2005 is a new course series on modern electronics, given by CERN physicists and engineers in the format of the successful ELEC-2002 course series, and within the framework of the 2005 Technical Training Programme. This comprehensive course series is designed for people who are not electronics specialists, for example physicists, engineers and technicians working at or visiting the laboratory, who use or will use electronics in their present or future activities, in particular in the context of the LHC accelerator and experiments. ELEC-2005 will composed of four Terms throughout the year: Winter Term: Introduction to electronics in HEP (January-February, 6 lectures) Spring Term: Integrated circuits and VLSI technology for physics (March, 6 lectures) Summer Term: System electronics for physics: Issues (May, 7 lectures) Winter Term: Electronics applications in HEP experiments (November-December, 10 lectures) Lectures within each Term will take place on Tuesdays and Thursdays, from 10:00 to 12:30. The...

  2. High Energy Physics at Tufts University

    International Nuclear Information System (INIS)

    1993-01-01

    This report discusses the following topics: Fermilab fixed target experiments; Soudan II nucleon decay project; Physics at the proton-antiproton collider at √s = 1.8 TeV; The Solenoidal Detector for the supercollider; Neutrino telescope proposal; Polarization in massive quark and hadron production; Production characteristics of top quarks; Scattering, spin dependence and mass corrections in Skyrmion models; and computation and networking

  3. Recent discoveries in high energy physics

    CERN Multimedia

    Schopper, Herwig

    1975-01-01

    At the 14th International Cosmic Ray Conference at Munich in August, Professor S chop per, Director of the DESY Laboratory, reviewed the recent findings. This is an abridged version of his talk. It is a little more specialised than we normally include but, for those who recall some of their physics education, it adds background to the arguments that we have been sketching in recent articles.

  4. Heavy-flavor production and medium properties in high-energy nuclear collisions. What next?

    Energy Technology Data Exchange (ETDEWEB)

    Aarts, G.; Allton, C. [Swansea University, Swansea (United Kingdom); Aichelin, J.; Gossiaux, P.B.; Nahrgang, M. [Universite de Nantes, SUBATECH, Ecole des Mines de Nantes, Nantes (France); Arnaldi, R.; Scomparin, E. [INFN, Sezione di Torino, Torino (Italy); Bass, S.A. [Duke University, Durham, NC (United States); Bedda, C.; Grelli, A.; Trzeciak, B.; Doremalen, L. van; Vermunt, L.; Vigolo, S. [Utrecht University, Institute for Subatomic Physics, Utrecht (Netherlands); Brambilla, N. [Technische Universitaet Muenchen, Physik-Department and Excellence Cluster Universe, Garching (Germany); Technische Universitaet Muenchen, Institute for Advanced Study, Munich (Germany); Bratkovskaya, E. [GSI Helmholtzzentrum fuer Schwerionenforschung, Research Division and ExtreMe Matter Institute EMMI, Darmstadt (Germany); Frankfurt University, Institute for Theoretical Physics, Frankfurt am Main (Germany); Braun-Munzinger, P. [GSI Helmholtzzentrum fuer Schwerionenforschung, Research Division and ExtreMe Matter Institute EMMI, Darmstadt (Germany); Ruprecht-Karls-Universitaet Heidelberg, Physikalisches Institut, Heidelberg (Germany); Bruno, G.E. [Dipartimento di Fisica and INFN, Bari (Italy); European Organization for Nuclear Research, Geneva (Switzerland); Dahms, T. [Technische Universitaet Muenchen, Physik-Department and Excellence Cluster Universe, Garching (Germany); Das, S.K. [University of Catania, Catania (Italy); Dembinski, H.; Schmelling, M. [Max-Planck-Institut fuer Kernphysik, Heidelberg (Germany); Djordjevic, M. [University of Belgrade, Institute of Physics, Belgrade (Serbia); Ferreiro, E. [Universidad de Santiago de Compostela, Santiago de Compostela (Spain); Frawley, A. [Florida State University, Tallahassee, FL (United States); Granier de Cassagnac, R.; Jo, M.; Nguyen, M. [Ecole Polytechnique, Laboratoire Leprince-Ringuet, Palaiseau (France); He, M. [Nanjing University of Science and Technology, Department of Applied Physics, Nanjing (China); Horowitz, W.A. [University of Cape Town, Department of Physics, Rondebosch (South Africa); Innocenti, G.M. [Massachusetts Institute of Technology, Cambridge, MA (United States); Kaczmarek, O. [Key Laboratory of Quark and Lepton Physics (MOE) and Institute of Particle Physics, Central China Normal University, Wuhan (China); University of Bielefeld, Bielefeld (Germany); Kuijer, P.G. [National Institute for Subatomic Physics, Amsterdam (Netherlands); Laine, M. [University of Bern, AEC, Institute for Theoretical Physics, Bern (Switzerland); Lombardo, M.P. [INFN - Laboratori Nazionali di Frascati, Frascati (Italy); Mischke, A. [Utrecht University, Institute for Subatomic Physics, Utrecht (Netherlands); National Institute for Subatomic Physics, Amsterdam (Netherlands); Munhoz, M.G.; Suaide, A.A.P. [Universidade de Sao Paulo (USP), Sao Paulo (Brazil); Oliveira da Silva, A.C.; Zanoli, H.J.C. [Utrecht University, Institute for Subatomic Physics, Utrecht (Netherlands); Universidade de Sao Paulo (USP), Sao Paulo (Brazil); Petreczky, P. [Brookhaven National Laboratory, Upton, NY (United States); Rothkopf, A. [Ruprecht-Karls-Universitaet Heidelberg, Institute for Theoretical Physics, Heidelberg (Germany); Song, T. [Frankfurt University, Institute for Theoretical Physics, Frankfurt am Main (Germany); Stachel, J. [Ruprecht-Karls-Universitaet Heidelberg, Physikalisches Institut, Heidelberg (Germany); Tolos, L. [Frankfurt Institute for Advanced Studies (FIAS), Frankfurt (Germany); Institut de Ciencies de l' Espai (IEEC-CSIC), Bellaterra (Spain); Uras, A. [Domaine Scientifique de la Doua, Institute of Nuclear Physics, Villeurbanne Cedex (France); Xu, N. [Lawrence Berkeley National Laboratory, Berkeley, CA (United States); Ye, Z. [University of Illinois, Chicago, IL (United States); Zhuang, P. [Tsinghua University, Beijng Shi (China)

    2017-05-15

    Open and hidden heavy-flavor physics in high-energy nuclear collisions are entering a new and exciting stage towards reaching a clearer understanding of the new experimental results with the possibility to link them directly to the advancement in lattice Quantum Chromo-Dynamics (QCD). Recent results from experiments and theoretical developments regarding open and hidden heavy-flavor dynamics have been debated at the Lorentz Workshop Tomography of the Quark-Gluon Plasma with Heavy Quarks, which was held in October 2016 in Leiden, The Netherlands. In this contribution, we summarize identified common understandings and developed strategies for the upcoming five years, which aim at achieving a profound knowledge of the dynamical properties of the quark-gluon plasma. (orig.)

  5. Energy in the small- and medium-sized business sector (MKB) in the Netherlands. The first experiences of the MKB in the free energy market

    International Nuclear Information System (INIS)

    De Groot, H.H.

    2002-01-01

    The most important results of a survey on the title subject are presented, focusing on the first experiences in a liberalized energy market and the expectations of customers who do no yet have the possibility to choose an energy supplier. Also attention is paid to failures in the supply of energy and financial consequences for the consumers. Finally, the vision of the Dutch association for small- and medium-sized businesses (MKB-Nederland) on the privatization of the energy sector is presented, including a reaction to the renewable energy policy plans of the Dutch government [nl

  6. Artificial intelligence—applications in high energy and nuclear physics

    Science.gov (United States)

    Müller, U.

    2003-04-01

    In the parallel sessions at ACAT2002 different artificial intelligence applications in high energy and nuclear physics were presented. I will briefly summarize these presentations. Further details can be found in the relevant section of these proceedings.

  7. Artificial intelligence - applications in high energy and nuclear physics

    Energy Technology Data Exchange (ETDEWEB)

    Mueller, U. E-mail: mueller@whep.uni-wuppertal.de

    2003-04-21

    In the parallel sessions at ACAT2002 different artificial intelligence applications in high energy and nuclear physics were presented. I will briefly summarize these presentations. Further details can be found in the relevant section of these proceedings.

  8. Theoretical high energy physics research at the University of Chicago

    Energy Technology Data Exchange (ETDEWEB)

    Rosner, J.L.; Martinec, E.J.; Sachs, R.G.

    1990-09-01

    This report discusses research being done at the University of Chicago in High Energy Physics. Some topic covered are: CP violation; intermediate vector bosons; string models; supersymmetry; and rare decay of kaons. (LSP)

  9. Overview. Department of High Energy Physics. Section 5

    Energy Technology Data Exchange (ETDEWEB)

    Coghen, T. [Institute of Nuclear Physics, Cracow (Poland)

    1995-12-31

    The activities of Department of High Energy Physics in 1994 have been presented. They cover a variety of problems of experimental and theoretical high energy elementary particle physics: hadronic and leptonic interactions with nucleons and nuclei (mainly characteristics of particle production , including heavy quark physics), e{sup +} e{sup -} interactions and tests of the Standard Model (also evaluations of radiative corrections), ultrarelativistic heavy ion interactions and search for the quark-gluon plasma, as well as spectra, composition and interactions of high energy cosmic ray particles.Research on detectors and development of apparatus for high energy physics experiments at future accelerators such as LHC or RHIC were also carried out. The short information about personnel employed in the Department, seminars, publication, conferences and reports is also given.

  10. Guide to the Durham-Rutherford high energy physics databases

    International Nuclear Information System (INIS)

    Gault, F.D.; Read, B.J.; Roberts, R.G.

    1978-10-01

    A description is given of the databases of high energy physics experimental scattering data available on the Rutherford Laboratory computer network, together with instructions for data retrieval and example searches. (author)

  11. Miniaturization of high-energy physics detectors. Vol. 14

    International Nuclear Information System (INIS)

    Stefanini, A.

    1983-01-01

    Continued experimental research in high-energy physics requires the reduction in size and cost of the advanced technical equipment involved. A new technology is rapidly evolving that promises to replace today's massive high-energy physics instruments--which may be composed of several thousand tons of sensitive parts--with miniaturized equivalents. Smaller, less expensive apparatus would create more opportunities for research worldwide, and many types of experiments now considered impractical could then be carried out. Scientists and engineers from many countries have contributed to this volume to provide a broad panorama of the new miniaturization technology in high-energy physics. They describe a wide range of new instruments and their applications, discuss limitations and technological problems, and explore the connections between technology and progress in the field of high-energy physics

  12. Theoretical high energy physics research at the University of Chicago

    International Nuclear Information System (INIS)

    Rosner, J.L.; Martinec, E.J.; Sachs, R.G.

    1990-09-01

    This report discusses research being done at the University of Chicago in High Energy Physics. Some topic covered are: CP violation; intermediate vector bosons; string models; supersymmetry; and rare decay of kaons

  13. Final Report. Research in Theoretical High Energy Physics

    Energy Technology Data Exchange (ETDEWEB)

    Greensite, Jeffrey P. [San Francisco State Univ., CA (United States); Golterman, Maarten F.L. [San Francisco State Univ., CA (United States)

    2015-04-30

    Grant-supported research in theoretical high-energy physics, conducted in the period 1992-2015 is briefly described, and a full listing of published articles result from those research activities is supplied.

  14. Lecture note on circuit technology for high energy physics experiment

    International Nuclear Information System (INIS)

    Ikeda, Hirokazu.

    1992-07-01

    This lecture gives basic ideas and practice of the circuit technology for high energy physics experiment. The program of this lecture gives access to the integrated circuit technology to be applied for a high luminosity hadron collider experiment. (author)

  15. Low-energy photo- and electroproduction for physical pions

    International Nuclear Information System (INIS)

    MacMullen, J.T.

    1979-02-01

    The Ward identities of current algebra are combined with gauge invariance constraints, on-shell PCAC and the Bjorken limit to obtain the low-energy expressions of the pion photo- and electroproduction invariant amplitudes for physical pions

  16. CHEP95: Computing in high energy physics. Abstracts

    International Nuclear Information System (INIS)

    1995-01-01

    These proceedings cover the technical papers on computation in High Energy Physics, including computer codes, computer devices, control systems, simulations, data acquisition systems. New approaches on computer architectures are also discussed

  17. Nonlocal astrophysics dark matter, dark energy and physical vacuum

    CERN Document Server

    Alexeev, Boris V

    2017-01-01

    Non-Local Astrophysics: Dark Matter, Dark Energy and Physical Vacuum highlights the most significant features of non-local theory, a highly effective tool for solving many physical problems in areas where classical local theory runs into difficulties. The book provides the fundamental science behind new non-local astrophysics, discussing non-local kinetic and generalized hydrodynamic equations, non-local parameters in several physical systems, dark matter, dark energy, black holes and gravitational waves. Devoted to the solution of astrophysical problems from the position of non-local physics Provides a solution for dark matter and dark energy Discusses cosmological aspects of the theory of non-local physics Includes a solution for the problem of the Hubble Universe expansion, and of the dependence of the orbital velocity from the center of gravity

  18. 21st DAE-BRNS High Energy Physics Symposium 2014

    CERN Document Server

    DAE-HEP 2014

    2014-01-01

    The DAE-BRNS High Energy Physics Symposium is a conference series held every other year in India, supported by the Board of Research in Nuclear Sciences (BRNS), Department of Atomic Energy (DAE), India. The symposium is considered as one of the premiere symposiums organized in India in the field of elementary particle physics. Around 350 physicists and researchers are expected to participate in this symposium to discuss the latest advancements in the fields of particle physics, astro-particle physics, cosmology, development of new detector technology and accelerator. The XXI edition of the DAE-BRNS High Energy Physics Symposium will be held in the picturesque campus of the Indian Institute of Technology Guwahati during 8 – 12 December, 2014.

  19. The physics of magnetic fusion energy

    International Nuclear Information System (INIS)

    Roberts, K.V.

    1980-01-01

    A personal account is given covering the period April 1956 until the present day of the challenging theoretical problems posed by the controlled release of energy by magnetic confinement fusion. The need to analyse in detail the working of a plasma apparatus or reactor as a function of time is stressed and the application of such analysis to the various thermonuclear devices which have been considered during this period, is examined. (UK)

  20. Workshop on low energy neutrino physics

    International Nuclear Information System (INIS)

    2009-01-01

    The main topics of the workshop are: the determination of the neutrino mixing angle theta-13, the experiments concerning the monitoring of reactors based on the measurement of neutrino spectra, solar neutrinos, supernovae neutrinos, geo-neutrinos, neutrino properties, neutrinoless double beta decay and future low energy neutrino detectors. This document gathers together the program of the workshop, the slides of the presentations, some abstracts and some posters

  1. Introduction to high energy cosmic ray physics

    International Nuclear Information System (INIS)

    Battistoni, G.; Grillo, A.F.

    1995-01-01

    After a few general qualitative considerations about the characteristics of primary cosmic rays arriving at the top of atmosphere, the fundamental concepts on their propagation and acceleration are discussed. The experimental situation, both from direct and indirect experiments, is presented, followed by a discussion on some concepts on hadronic interactions at high energy which are applied in a simplified and analytical model to the production of secondary particles in atmosphere

  2. 11th Latin American Symposium on High Energy Physics

    CERN Document Server

    2016-01-01

    SILAFAE is one of the premier series of international meetings – High energy physics in Latin America. The present edition will be held in the city of Antigua Guatemala, from November 14 - 18th 2016. The program contains plenary talks aimed at reviewing the status of the recent advances in frontier topics in High Energy Physics, both theoretical and experimental. It also includes parallel sessions of specialized talks.

  3. Fifth International Conference on High Energy Density Physics

    Energy Technology Data Exchange (ETDEWEB)

    Beg, Farhat

    2017-07-05

    The Fifth International Conference on High Energy Density Physics (ICHED 2015) was held in the Catamaran Hotel in San Diego from August 23-27, 2015. This meeting was the fifth in a series which began in 2008 in conjunction with the April meeting of the American Physical Society (APS). The main goal of this conference has been to bring together researchers from all fields of High Energy Density Science (HEDS) into one, unified meeting.

  4. Foundations of Isomer Physics for Energy Applications

    Science.gov (United States)

    2008-10-16

    14, 1393 (2004) 7. Roman Kolesov, Yuri Rostovstev, Olga Kocharovskaya.: Opt. Commun. 179, 537 (2000) 8. Hasan, Z., Biyikli, L., Macfarlane, PL...75 ps beam-off period, during which the data acquisition system was triggered by single y-ray events, time stamped using an external 10 MHz...AFOSR under Contract F49620-02-1-0187; the AWE (U.K.); and the EPSRC (U.K.). 047303-3 BRICK REPORTS PHYSICAL REVIEW C 76, 047303 (2007) [I] P. H

  5. [High energy particle physics at Purdue, 1990--1991

    International Nuclear Information System (INIS)

    Gaidos, J.A.; Loeffler, F.J.; McIlwain, R.L.; Miller, D.H.; Palfrey, T.R.; Shibata, E.I.; Shipsey, I.P.

    1991-05-01

    Progress made in the experimental and theoretical high energy physics program is reviewed. The CLEO experiment, particle astrophysics, dynamical symmetry breaking in gauge theories, the Collider Detector at Fermilab, the TOPAZ Experiment, and elementary particle physics beyond the standard model are included

  6. Proceedings of the 5. National Meeting on Intermediate Energy Physics

    International Nuclear Information System (INIS)

    1984-05-01

    Several papers concerning the physics at intermediate energies (∼ 100-1000MeV) are presented in this proceedings. Almost all the works show overlapping between Nuclear and Particles Physics. There is a predominance in theoretical papers. (L.C.) [pt

  7. Assessment of the physical activity, body mass index and energy ...

    African Journals Online (AJOL)

    Background: Declining levels of physical activity at workplaces, during leisure time and when travelling, accompanied by increasing exposure to the mass media, are major determinants of the global obesity epidemic. This study aimed to assess physical activity, the body mass index (BMI) and energy intake of human ...

  8. 1993 European school of high-energy physics. Proceedings

    International Nuclear Information System (INIS)

    Ellis, N.; Gavela, M.B.

    1994-01-01

    The European School of High-Energy Physics is intended to give young experimental physicists an introduction to the theoretical aspects of recent advances in elementary particle physics. These Proceedings contain lectures on quantum field theory, quantum chromodynamics, CP violation, radiative corrections, cosmology, particle detectors and e + e - accelerators, as well as reports on results from HERA and LEP and accounts of particle physics research at CERN and in Poland and Russia. (orig.)

  9. Energy and Entropy as the Fundaments of Theoretical Physics

    Directory of Open Access Journals (Sweden)

    Pharis E. Williams

    2002-05-01

    Full Text Available Einstein's article titled, "The Fundaments of Theoretical Physics", from Science, Washington, D.C., May 24, 1940, is presented in its entirety as it is an outstanding presentation of the history and status of the foundations of theoretical physics as it stood in 1940. Further, it provides the background for discussing the new view of the fundaments of theoretical physics provided by the energy and entropy foundation of the Dynamic Theory.

  10. Physics of Nuclear Collisions at High Energy

    Energy Technology Data Exchange (ETDEWEB)

    Hwa, Rudolph C. [Univ. of Oregon, Eugene, OR (United States)

    2012-05-01

    A wide range of problems has been investigated in the research program during the period of this grant. Although the major effort has been in the subject of heavy-ion collisions, we have also studied problems in biological and other physical systems. The method of analysis used in reducing complex data in multiparticle production to simple descriptions can also be applied to the study of complex systems of very different nature. Phase transition is an important phenomenon in many areas of physics, and for heavy-ion collisions we study the fluctuations of multiplicities at the critical point. Human brain activities as revealed in EEG also involve fluctuations in time series, and we have found that our experience enables us to find the appropriate quantification of the fluctuations in ways that can differentiate stroke and normal subjects. The main topic that characterizes the research at Oregon in heavy-ion collisions is the recombination model for the treatment of the hadronization process. We have avoided the hydrodynamical model partly because there is already a large community engaged in it, but more significantly we have found the assumption of rapid thermalization unconvincing. Recent results in studying LHC physics lead us to provide more evidence that shower partons are very important even at low p_T, but are ignored by hydro. It is not easy to work in an environment where the conventional wisdom regards our approach as being incorrect because it does not adhere to the standard paradigm. But that is just what a vibrant research community needs: unconventional approach may find evidences that can challenge the orthodoxy. An example is the usual belief that elliptic flow in fluid dynamics gives rise to azimuthal anisotropy. We claim that it is only sufficient but not necessary. With more data from LHC and more independent thinkers working on the subject what is sufficient as a theory may turn out to be incorrect in reality. Another area of investigation that

  11. Princeton University High Energy Physics Research

    Energy Technology Data Exchange (ETDEWEB)

    Marlow, Daniel R. [Princeton Univ., NJ (United States)

    2015-06-30

    This is the Final Report on research conducted by the Princeton Elementary Particles group over the approximately three-year period from May 1, 2012 to April 30, 2015. The goal of our research is to investigate the fundamental constituents of matter, their fields, and their interactions; to understand the properties of space and time; and to study the profound relationships between cosmology and particle physics. During the funding period covered by this report, the group has been organized into a subgroup concentrating on the theory of particles, strings, and cosmology; and four subgroups performing major experiments at laboratories around the world: CERN, Daya Bay, Gran Sasso as well as detector R\\&D on the Princeton campus. Highlights in of this research include the discovery of the Higgs Boson at CERN and the measurement of $\\sin^22\\theta_{13}$ by the Daya Bay experiment. In both cases, Princeton researchers supported by this grant played key roles.

  12. High Energy Physics at Tufts University

    International Nuclear Information System (INIS)

    1992-01-01

    This report discusses the following topics: Neutrino Interactions in the 15-foot Bubble Chamber; Pion and Kaon Production of Charm and Charm-Strange States; Study of Heavy Flavors at the Tagged Particle Spectrometer; Neutrino Oscillations at the Fermilab Main Injector; Soudan II Nucleon Decay Project; Physics at the Antiproton-Proton Collider at √ bar s = 1.8 TeV; Designing the Solenoidal Detector for the Supercollider; Neutrino Telescope Proposal; Polarization in Inclusive Hyperon Production and QCD Subprocesses; Production and Decay Characteristics of Top Quarks; Scattering in Extended Skyrmion Models and Spin Dependence; Search for Top Quark Production at the Tevatron; Polarization Correlations in Hadronic Production of Top Quarks; and Computation and Networking

  13. Calorimetry energy measurement in particle physics

    CERN Document Server

    Wigmans, Richard

    2017-01-01

    Particle physics is the science that pursues the age-old quest for the innermost structure of matter and the fundamental interactions between its constituents. Modern experiments in this field rely increasingly on calorimetry, a detection technique in which the particles of interest are absorbed in the detector. Calorimeters are very intricate instruments. Their performance characteristics depend on subtle, sometimes counter-intuitive design details. This book, written by one of the world's foremost experts, is the first comprehensive text on this topic. It provides a fundamental and systematic introduction to calorimetry. It describes the state of the art in terms of both the fundamental understanding of calorimetric particle detection, and the actual detectors that have been or are being built and operated in experiments. The last chapter discusses landmark scientific discoveries in which calorimetry has played an important role. This book summarizes and puts into perspective the work described in some 900...

  14. Extra dimensions hypothesis in high energy physics

    Directory of Open Access Journals (Sweden)

    Volobuev Igor

    2017-01-01

    Full Text Available We discuss the history of the extra dimensions hypothesis and the physics and phenomenology of models with large extra dimensions with an emphasis on the Randall- Sundrum (RS model with two branes. We argue that the Standard Model extension based on the RS model with two branes is phenomenologically acceptable only if the inter-brane distance is stabilized. Within such an extension of the Standard Model, we study the influence of the infinite Kaluza-Klein (KK towers of the bulk fields on collider processes. In particular, we discuss the modification of the scalar sector of the theory, the Higgs-radion mixing due to the coupling of the Higgs boson to the radion and its KK tower, and the experimental restrictions on the mass of the radion-dominated states.

  15. Foundations of high-energy-density physics physical processes of matter at extreme conditions

    CERN Document Server

    Larsen, Jon

    2017-01-01

    High-energy-density physics explores the dynamics of matter at extreme conditions. This encompasses temperatures and densities far greater than we experience on Earth. It applies to normal stars, exploding stars, active galaxies, and planetary interiors. High-energy-density matter is found on Earth in the explosion of nuclear weapons and in laboratories with high-powered lasers or pulsed-power machines. The physics explored in this book is the basis for large-scale simulation codes needed to interpret experimental results whether from astrophysical observations or laboratory-scale experiments. The key elements of high-energy-density physics covered are gas dynamics, ionization, thermal energy transport, and radiation transfer, intense electromagnetic waves, and their dynamical coupling. Implicit in this is a fundamental understanding of hydrodynamics, plasma physics, atomic physics, quantum mechanics, and electromagnetic theory. Beginning with a summary of the topics and exploring the major ones in depth, thi...

  16. Applications of neural networks in high energy physics

    International Nuclear Information System (INIS)

    Cutts, D.; Hoftun, J.S.; Nesic, D.; Sornborger, A.; Johnson, C.R.; Zeller, R.T.

    1990-01-01

    Neural network techniques provide promising solutions to pattern recognition problems in high energy physics. We discuss several applications of back propagation networks, and in particular describe the operation of an electron algorithm based on calorimeter energies. 5 refs., 5 figs., 1 tab

  17. Wind Energy and Atmospheric Physics Department annual progress report 1999

    DEFF Research Database (Denmark)

    2000-01-01

    The report describes the work of the Wind Energy and Atmospheric Physics Department at Risø National Laboratory in 1999. The research of the department aims to develop new opportunities in the exploitation of wind energy and to map and alleviateatmospheric aspects of environmental problems...

  18. Evaluation of Monte Carlo tools for high energy atmospheric physics

    NARCIS (Netherlands)

    C. Rutjes (Casper); D. Sarria (David); A.B. Skeltved (Alexander Broberg); A. Luque (Alejandro); G. Diniz (Gabriel); N. Østgaard (Nikolai); U. Ebert (Ute)

    2016-01-01

    textabstractThe emerging field of high energy atmospheric physics (HEAP) includes terrestrial gamma-ray flashes, electron-positron beams and gamma-ray glows from thunderstorms. Similar emissions of high energy particles occur in pulsed high voltage discharges. Understanding these phenomena requires

  19. Low-energy antiprotons physics and the FLAIR facility

    International Nuclear Information System (INIS)

    Widmann, E

    2015-01-01

    FLAIR, the Facility for low-energy antiproton and ion research has been proposed in 2004 as an extension of the planned FAIR facility at Darmstadt, Germany. FLAIR was not included into the modularized start version of FAIR, but the recent installation of the CRYRING storage ring at GSI Darmstadt has opened new perspectives for physics with low-energy antiprotons at FAIR. (paper)

  20. Working group report: High energy and collider physics

    Indian Academy of Sciences (India)

    The projects undertaken in the working group I on high energy and collider physics can be classified into (i) ... pp → WH is very interesting, though in general the total production rate is dom- inated by gluon–gluon ...... Higgs exchange, considerably below the energies of these resonances in longitudinal. W/Z scattering.

  1. Local governments and climate change: sustainable energy planning and implementation in small and medium sized communities

    National Research Council Canada - National Science Library

    Van Staden, Maryke; Musco, Francesco

    2010-01-01

    The focus of 'Local governments and climate change' is on how small and medium-sized communities in Europe are effectively responding to climate change, with a particular focus on different approaches...

  2. Reform of Medium Education and Physical education: an abyss for the future

    Directory of Open Access Journals (Sweden)

    Robson dos Santos Bastos

    2017-09-01

    Full Text Available It develops analyzes on the reform of secondary education proposed by Provisional Measure . 746, now Law 13.415/17, and its implications in the future of Physical Education. Part of the following scientific question: What are the perspectives for the future of Physical Education in the face of the reform of secondary education proposed by the new educational policy? As methodological strategy a documentary study was developed, having as a source of analysis the texts of the MP and the law that ratifies it, besides the notes published by different entities related to education and Physical Education. The study indicates that the reform of high school will imply significantly in Physical Education in three fields: in its teaching in basic education, in teacher training and in teaching work.

  3. ATLAS and ultra high energy cosmic ray physics

    Directory of Open Access Journals (Sweden)

    Pinfold James

    2017-01-01

    Full Text Available After a brief introduction to extended air shower cosmic ray physics the current and future deployment of forward detectors at ATLAS is discussed along with the various aspects of the current and future ATLAS programs to explore hadronic physics. The emphasis is placed on those results and future plans that have particular relevance for high-energy, and ultra high-energy, cosmic ray physics. The possible use of ATLAS as an “underground” cosmic muon observatory is briefly considered.

  4. Diamond detectors for high energy physics experiments

    Science.gov (United States)

    Bäni, L.; Alexopoulos, A.; Artuso, M.; Bachmair, F.; Bartosik, M.; Beacham, J.; Beck, H.; Bellini, V.; Belyaev, V.; Bentele, B.; Berdermann, E.; Bergonzo, P.; Bes, A.; Brom, J.-M.; Bruzzi, M.; Cerv, M.; Chiodini, G.; Chren, D.; Cindro, V.; Claus, G.; Collot, J.; Cumalat, J.; Dabrowski, A.; D'Alessandro, R.; Dauvergne, D.; de Boer, W.; Dorfer, C.; Dünser, M.; Eremin, V.; Eusebi, R.; Forcolin, G.; Forneris, J.; Frais-Kölbl, H.; Gallin-Martel, L.; Gallin-Martel, M. L.; Gan, K. K.; Gastal, M.; Giroletti, C.; Goffe, M.; Goldstein, J.; Golubev, A.; Gorišek, A.; Grigoriev, E.; Grosse-Knetter, J.; Grummer, A.; Gui, B.; Guthoff, M.; Haughton, I.; Hiti, B.; Hits, D.; Hoeferkamp, M.; Hofmann, T.; Hosslet, J.; Hostachy, J.-Y.; Hügging, F.; Hutton, C.; Jansen, H.; Janssen, J.; Kagan, H.; Kanxheri, K.; Kasieczka, G.; Kass, R.; Kassel, F.; Kis, M.; Konovalov, V.; Kramberger, G.; Kuleshov, S.; Lacoste, A.; Lagomarsino, S.; Lo Giudice, A.; Lukosi, E.; Maazouzi, C.; Mandic, I.; Mathieu, C.; Menichelli, M.; Mikuž, M.; Morozzi, A.; Moss, J.; Mountain, R.; Murphy, S.; Muškinja, M.; Oh, A.; Oliviero, P.; Passeri, D.; Pernegger, H.; Perrino, R.; Picollo, F.; Pomorski, M.; Potenza, R.; Quadt, A.; Re, A.; Reichmann, M.; Riley, G.; Roe, S.; Sanz, D.; Scaringella, M.; Schaefer, D.; Schmidt, C. J.; Schnetzer, S.; Sciortino, S.; Scorzoni, A.; Seidel, S.; Servoli, L.; Smith, S.; Sopko, B.; Sopko, V.; Spagnolo, S.; Spanier, S.; Stenson, K.; Stone, R.; Sutera, C.; Tannenwald, B.; Taylor, A.; Traeger, M.; Tromson, D.; Trischuk, W.; Tuve, C.; Uplegger, L.; Velthuis, J.; Venturi, N.; Vittone, E.; Wagner, S.; Wallny, R.; Wang, J. C.; Weingarten, J.; Weiss, C.; Wengler, T.; Wermes, N.; Yamouni, M.; Zavrtanik, M.

    2018-01-01

    Beam test results of the radiation tolerance study of chemical vapour deposition (CVD) diamond against different particle species and energies is presented. We also present beam test results on the independence of signal size on incident particle rate in charged particle detectors based on un-irradiated and irradiated poly-crystalline CVD diamond over a range of particle fluxes from 2 kHz/cm2 to 10 MHz/cm2. The pulse height of the sensors was measured with readout electronics with a peaking time of 6 ns. In addition functionality of poly-crystalline CVD diamond 3D devices was demonstrated in beam tests and 3D diamond detectors are shown to be a promising technology for applications in future high luminosity experiments.

  5. Microfluidic Scintillation Detectors for High Energy Physics

    CERN Document Server

    Maoddi, Pietro; Mapelli, Alessandro; CERN

    This thesis deals with the development and study of microfluidic scintillation detectors, a technology of recent introduction for the detection of high energy particles. Most of the interest for such devices comes from the use of a liquid scintillator, which entails the possibility of changing the active material in the detector, leading to increased radiation resistance. A first part of the thesis focuses on the work performed in terms of design and modelling studies of novel prototype devices, hinting to new possibilities and applications. In this framework, the simulations performed to validate selected designs and the main technological choices made in view of their fabrication are addressed. The second part of this thesis deals with the microfabrication of several prototype devices. Two different materials were studied for the manufacturing of microfluidic scintillation detectors, namely the SU-8 photosensitive epoxy and monocrystalline silicon. For what concerns the former, an original fabrication appro...

  6. Nonextensive statistical mechanics and high energy physics

    Directory of Open Access Journals (Sweden)

    Tsallis Constantino

    2014-04-01

    Full Text Available The use of the celebrated Boltzmann-Gibbs entropy and statistical mechanics is justified for ergodic-like systems. In contrast, complex systems typically require more powerful theories. We will provide a brief introduction to nonadditive entropies (characterized by indices like q, which, in the q → 1 limit, recovers the standard Boltzmann-Gibbs entropy and associated nonextensive statistical mechanics. We then present somerecent applications to systems such as high-energy collisions, black holes and others. In addition to that, we clarify and illustrate the neat distinction that exists between Lévy distributions and q-exponential ones, a point which occasionally causes some confusion in the literature, very particularly in the LHC literature

  7. [Intermediate/high energy nuclear physics

    International Nuclear Information System (INIS)

    1989-01-01

    We have continued to develop a theoretical framework for the quark and gluon structure of nuclei. Our approach features a successful phenomenological model, the quark cluster model (QCM), and an ambitious program in the non-perturbative solution of quantum field theories. The effort in quantum field theory provides theoretical results to test or replace assumed ingredients of the QCM. By the explicit example of a scalar field theory in 2D we have solved the long-standing problem of how to treat the dynamics of the vacuum in light-front quantization. We now propose to solve the same problem for simple Fermion field theories in 2D such as the Gross-Neveu model. We propose in subsequent years to address QCD in low dimensionality with the purpose of extracting non-perturbative predictions for quark and gluon amplitudes in few baryon systems. Simultaneously with this new effort we will continue to develop extensions and applications of the QCM. We propose to continue predicting phenomena to be observed in high energy particle-nucleus collisions that reflect the rearrangement of quarks and gluons in nuclei. We have completed our analysis of the SLAC E101 and E133 experiments on Deuterium to elucidate the degree to which a six-quark cluster contribution is admissable in the Bjorken x > 1 data. We have completed our development of a parameterized thermal liquid drop model for light nuclei. In addition we have completed a set of predictions for the formation of a ''nuclear stratosphere'' in nuclei created by intermediate energy heavy ion interactions. These results motivate a new investigation of the temperature dependence of the ion-ion potential with particular emphasis on the thermal dependence of the barrier height and radius. We have also shown that a consistent treatment of relativistic effects is important for a theoretical description of the elastic magnetic form factor of 17 O. 85 refs

  8. High energy collider physics. Final report

    International Nuclear Information System (INIS)

    Ruchti, R.C.; Biswas, N.N.; Wayne, M.R.

    1997-01-01

    With the demise of the Superconducting Supercollider (SSC) Project, there was great concern that the technological developments for that accelerator and its associated detectors might well be lost in the aftermath. In the case of scintillating fiber tracking, such as not been the case. During the period 1990--1993, several tracking technologies were under development for SDC, including Scintillating Fiber Tracking, Straw-tubes, and Microstrip Gas Chambers. In summer 1990, several members of the Fiber Tracking Group (FTG) proposed the use of Scintillating Fiber Tracking to the D0 experiment at Fermilab. This proposal was accepted, and D0 now is building a 75,000 fiber channel tracking detector with readout via Visible Light Photon Counters (VLPC) which were devices pioneered by the SDC Fiber Tracking Group. In addition, all the preshower detectors for D0 also make use of fiber readout (in this case waveshifting fibers) and VLPC for photosensing. In February 1993, a full 7 months prior to cancellation of the SSC project by Congress, the SDC experiment rejected scintillating fiber tracking for further development. Fortunately for all concerned, the D0 experiment had already embraced this technology, so this important detector concept could be further developed, refined, and utilized for physics experimentation. In early 2000, data will be taken with the D0 fiber tracker to study Top Quarks, Beauty Particles, Electroweak Physics, QCD phenomena, and to search for new phenomena. The University of Notre Dame has played a fundamental and seminal role in the development and implementation of this detector technology. R. Ruchti has served as cospokesman of the Fiber Tracking Group since its inception in 1989, and has been a pioneer of fiber tracking technology since 1980. In addition, at least one other experiment at Fermilab, E835, has utilized scintillating fibers with VLPC readout to study Charmonium in proton-antiproton collisions using a gas-jet target in the Tevatron

  9. Accelerator physics and nuclear energy education in INRNE-BAS

    International Nuclear Information System (INIS)

    Tonev, D.; Goutev, N.; Georgiev, L. S.

    2015-01-01

    Presently Bulgaria has no research nuclear facility, neither a research reactor, nor an accelerator. With the new cyclotron laboratory in Sofia the Institute for Nuclear Research and Nuclear Energy at the Bulgarian Academy of Sciences will restart the experimental research program not only in the fi eld of nuclear physics, but also in many interdisciplinary fields related to nuclear physics. The cornerstone of the cyclotron laboratory is a cyclotron TR24, which provides a proton beam with a variable energy between 15 and 24 MeV and current of up to 0.4 mA. The TR24 accelerator allows for the production of a large variety of radioisotopes for medical applications and development of radiopharmaceuticals. The new cyclotron facility will be used for research in radiopharmacy, radiochemistry, radiobiology, nuclear physics, solid state physics, applied research, new materials and for education in all these fields including especially nuclear energy. Keywords: Cyclotron, PET/CT, radiopharmacy

  10. Experimental And Theoretical High Energy Physics Research At UCLA

    Energy Technology Data Exchange (ETDEWEB)

    Cousins, Robert D. [University of California Los Angeles

    2013-07-22

    This is the final report of the UCLA High Energy Physics DOE Grant No. DE-FG02- 91ER40662. This report covers the last grant project period, namely the three years beginning January 15, 2010, plus extensions through April 30, 2013. The report describes the broad range of our experimental research spanning direct dark matter detection searches using both liquid xenon (XENON) and liquid argon (DARKSIDE); present (ICARUS) and R&D for future (LBNE) neutrino physics; ultra-high-energy neutrino and cosmic ray detection (ANITA); and the highest-energy accelerator-based physics with the CMS experiment and CERN’s Large Hadron Collider. For our theory group, the report describes frontier activities including particle astrophysics and cosmology; neutrino physics; LHC interaction cross section calculations now feasible due to breakthroughs in theoretical techniques; and advances in the formal theory of supergravity.

  11. Section for nuclear physics and energy physics - Annual report January 1 to December 31, 1996

    International Nuclear Information System (INIS)

    1997-05-01

    This annual report summarizes the research and development activities of the Section for Nuclear Physics and Energy Physics at the University of Oslo in 1996. It includes experimental and theoretical nuclear physics, as well as other fields of physics in which members of the section have participated. The report describes completed projects and work currently in progress. As in previous years, the experimental activities in nuclear physics have mainly been centered around the Cyclotron Laboratory with the SCANDITRONIX MC-35 Cyclotron. Using CACTUS multidetector system, several experiments have been completed. Some results have been published while more data remains to be analyzed. In experimental nuclear physics the section staff members are engaged within three main fields: nuclei at high temperature, high spin nuclear structure and high and intermediate energy nuclear physics

  12. Section for nuclear physics and energy physics - Annual report January 1 to December 31, 1996

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-05-01

    This annual report summarizes the research and development activities of the Section for Nuclear Physics and Energy Physics at the University of Oslo in 1996. It includes experimental and theoretical nuclear physics, as well as other fields of physics in which members of the section have participated. The report describes completed projects and work currently in progress. As in previous years, the experimental activities in nuclear physics have mainly been centered around the Cyclotron Laboratory with the SCANDITRONIX MC-35 Cyclotron. Using CACTUS multidetector system, several experiments have been completed. Some results have been published while more data remains to be analyzed. In experimental nuclear physics the section staff members are engaged within three main fields: nuclei at high temperature, high spin nuclear structure and high and intermediate energy nuclear physics.

  13. Section for nuclear physics and energy physics - Annual report January 1 to December 31, 1997

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-08-01

    This annual report summarizes the research and development activities of the Section for Nuclear Physics and Energy Physics at the University of Oslo in 1997. It includes experimental and theoretical nuclear physics, as well as other fields of physics in which members of the section have participated. The report describes completed projects and work currently in progress. As in previous years, the experimental activities in nuclear physics have mainly been centered around the Cyclotron Laboratory with the SCANDITRONIX MC-35 Cyclotron. The main auxiliary equipment consists of a multi-detector system CACTUS, and presently with a unique locally designed silicon strip detector array SIRI. In experimental nuclear physics the section staff members are engaged within three main fields: nuclei at high temperature, high spin nuclear structure and high and intermediate energy nuclear physics.

  14. Section for nuclear physics and energy physics - Annual report January 1 to December 31, 1997

    International Nuclear Information System (INIS)

    1998-08-01

    This annual report summarizes the research and development activities of the Section for Nuclear Physics and Energy Physics at the University of Oslo in 1997. It includes experimental and theoretical nuclear physics, as well as other fields of physics in which members of the section have participated. The report describes completed projects and work currently in progress. As in previous years, the experimental activities in nuclear physics have mainly been centered around the Cyclotron Laboratory with the SCANDITRONIX MC-35 Cyclotron. The main auxiliary equipment consists of a multi-detector system CACTUS, and presently with a unique locally designed silicon strip detector array SIRI. In experimental nuclear physics the section staff members are engaged within three main fields: nuclei at high temperature, high spin nuclear structure and high and intermediate energy nuclear physics

  15. The dosimetric standards for low and medium energy X-rays; Les references dosimetriques pour les rayons X de basses et moyennes energies

    Energy Technology Data Exchange (ETDEWEB)

    Ksouri, W.; Denoziere, M.; Lecerf, N.; Leroy, E.

    2009-07-01

    The Laboratoire national Henri Becquerel (LNE-LNHB) has developed national dosimetric standards for x-rays of low and medium energies. This article describes these standards which are aimed at applications of radiation protection of workers and patients in the fields of medical diagnosis and industrial x-ray radiation. Developments for contact radiotherapy are also discussed. (author)

  16. Development of the Advanced Energetic Pair Telescope (AdEPT) for Medium-Energy Gamma-Ray Astronomy

    Science.gov (United States)

    Hunter, Stanley D.; Bloser, Peter F.; Dion, Michael P.; McConnell, Mark L.; deNolfo, Georgia A.; Son, Seunghee; Ryan, James M.; Stecker, Floyd W.

    2011-01-01

    Progress in high-energy gamma-ray science has been dramatic since the launch of INTEGRAL, AGILE and FERMI. These instruments, however, are not optimized for observations in the medium-energy (approx.0.3< E(sub gamma)< approx.200 MeV) regime where many astrophysical objects exhibit unique, transitory behavior, such as spectral breaks, bursts, and flares. We outline some of the major science goals of a medium-energy mission. These science goals are best achieved with a combination of two telescopes, a Compton telescope and a pair telescope, optimized to provide significant improvements in angular resolution and sensitivity. In this paper we describe the design of the Advanced Energetic Pair Telescope (AdEPT) based on the Three-Dimensional Track Imager (3-DTI) detector. This technology achieves excellent, medium-energy sensitivity, angular resolution near the kinematic limit, and gamma-ray polarization sensitivity, by high resolution 3-D electron tracking. We describe the performance of a 30x30x30 cm3 prototype of the AdEPT instrument.

  17. Comparison Study on Low Energy Physics Model of GEANT4

    International Nuclear Information System (INIS)

    Park, So Hyun; Jung, Won Gyun; Suh, Tae Suk

    2010-01-01

    The Geant4 simulation toolkit provides improved or renewed physics model according to the version. The latest Geant4.9.3 which has been recoded by developers applies inserted Livermore data and renewed physics model to the low energy electromagnetic physics model. And also, Geant4.9.3 improved the physics factors by modified code. In this study, the stopping power and CSDA(Continuously Slowing Down Approximation) range data of electron or particles were acquired in various material and then, these data were compared with NIST(National Institute of Standards and Technology) data. Through comparison between data of Geant4 simulation and NIST, the improvement of physics model on low energy electromagnetic of Geant4.9.3 was evaluated by comparing the Geant4.9.2

  18. Bulk properties of the medium produced in relativistic heavy-ion collisions from the beam energy scan program

    Czech Academy of Sciences Publication Activity Database

    Adamczyk, L.; Adkins, J. K.; Agakishiev, G.; Bielčík, J.; Bielčíková, Jana; Chaloupka, P.; Federič, Pavol; Federičová, P.; Harlenderová, A.; Kocmánek, Martin; Kvapil, J.; Lidrych, J.; Rusňák, Jan; Rusňáková, O.; Šaur, Miroslav; Šimko, Miroslav; Šumbera, Michal; Trzeciak, B. A.

    2017-01-01

    Roč. 96, č. 4 (2017), č. článku 044904. ISSN 2469-9985 R&D Projects: GA MŠk LG15001; GA MŠk LM2015054 Institutional support: RVO:61389005 Keywords : STAR collaboration * RHIC * Beam Energy Scan Subject RIV: BF - Elementary Particles and High Energy Physics OBOR OECD: Particles and field physics Impact factor: 3.820, year: 2016

  19. Annular MHD Physics for Turbojet Energy Bypass

    Science.gov (United States)

    Schneider, Steven J.

    2011-01-01

    The use of annular Hall type MHD generator/accelerator ducts for turbojet energy bypass is evaluated assuming weakly ionized flows obtained from pulsed nanosecond discharges. The equations for a 1-D, axisymmetric MHD generator/accelerator are derived and numerically integrated to determine the generator/accelerator performance characteristics. The concept offers a shockless means of interacting with high speed inlet flows and potentially offers variable inlet geometry performance without the complexity of moving parts simply by varying the generator loading parameter. The cycle analysis conducted iteratively with a spike inlet and turbojet flying at M = 7 at 30 km altitude is estimated to have a positive thrust per unit mass flow of 185 N-s/kg. The turbojet allowable combustor temperature is set at an aggressive 2200 deg K. The annular MHD Hall generator/accelerator is L = 3 m in length with a B(sub r) = 5 Tesla magnetic field and a conductivity of sigma = 5 mho/m for the generator and sigma= 1.0 mho/m for the accelerator. The calculated isentropic efficiency for the generator is eta(sub sg) = 84 percent at an enthalpy extraction ratio, eta(sub Ng) = 0.63. The calculated isentropic efficiency for the accelerator is eta(sub sa) = 81 percent at an enthalpy addition ratio, eta(sub Na) = 0.62. An assessment of the ionization fraction necessary to achieve a conductivity of sigma = 1.0 mho/m is n(sub e)/n = 1.90 X 10(exp -6), and for sigma = 5.0 mho/m is n(sub e)/n = 9.52 X 10(exp -6).

  20. [Intermediate/high energy nuclear physics

    International Nuclear Information System (INIS)

    1987-01-01

    We have continued to develop a theoretical framework for the quark and gluon structure of nuclei. Our approach features a successful phenomenological model, the quark cluster model (QCM), and an ambitious program in the non-perturbative solution of quantum field theories. We have solved a non-trivial model field theory in the strong coupling regime using a discretized light front quantization (DLFQ) scheme. The method we developed expands upon the method of Pauli and Brodsky by incorporating a dynamical treatment of the vacuum. This is a major result since we have shown directly that the light-cone vacuum is not structureless as has been traditionally claimed by some particle theorists. We have thus succeeded in elucidating the consequences of spontaneous symmetry breaking in light-cone quantization. We now propose to address QCD in low dimensionality with the purpose of extracting non-perturbative predictions for quark and gluon amplitudes in few baryon systems. Simultaneously with this new effort we will continue to develop extensions and applications of the QCM. We propose to continue predicting phenomena to be observed in high energy particle-nucleus collisions that reflect the rearrangement of quarks and gluons in nuclei. We will complete our analysis of the SLAC NE3 data to explicate the degree to which they confirm the QCM prediction of ''steps'' in the ratio of nuclear structure functions when Bjorken x exceeds unity. In another effort, we will perform a search for narrow resonances in electron-positron interactions high in the continuum using the Bethe-Salpeter equation. We have completed our development of microscopic effective Hamiltonians for nuclear structure which include the explicit treatment of delta resonances. These effective Hamiltonians were successfully used in constrained mean field calculations evaluating conditions for nuclei to undergo a transition from nucleon matter to delta matter. 73 refs

  1. Selected problems in experimental intermediate energy physics. Final technical report, February 1, 1991--January 31, 1994

    International Nuclear Information System (INIS)

    Mayes, B.W.; Hungerford, E.V.; Pinsky, L.S.

    1997-01-01

    A complete description of the research program of the intermediate energy group at the University of Houston may be found in previous progress reports, renewal proposals, and proposals to various accelerator advisory committees. The summaries of activities are presented in the next section. The objectives of the research program are to: (1) investigate selected, forefront problems in experimental intermediate energy physics; (2) educate students in this field of research; and (3) develop the instrumentation necessary to undertake this experimental program. There were three major thrusts of the program: (1) strange particle physics, where a strange quark is embedded in the nuclear medium; (2) muon electro-weak decay, which involves a search for a violation of the standard model of the electro-weak interaction; and (3) measurement of the spin dependent structure function of the neutron and proton

  2. Department of High Energy Physics - Overview

    International Nuclear Information System (INIS)

    Bialkowska, H.

    2007-01-01

    The activities of the Department can be grouped into four parts: I. An ongoing analysis of the data from large accelerator facilities: 1. At CERN: - Delphi experiment on e + e - collisions. - NA48/1 experiment on weak decays of strange particles. - NA49 and WA98 experiments on relativistic ion collisions. - The COMPASS experiment continues the analysis of data from previous runs on muon-proton and muon-deuteron collisions, studying the spin structure of the proton, and in particular the gluon polarization. Preparations are under way for new data in 2007. 2. At HERA, Hamburg: An analysis of proton structure functions and diffractive interactions from the Zeus experiment continues. Preparations for participation in the planning for a future collider are under way. 3. At Celsius (data taking finished) and COSY (start of data taking) WASA experiment studies near threshold resonance production. II. Within the newly formed Laboratory for Astrophysical Apparatus, an extension and development program of the '' Pi of the Sky '' experiment is under way. This experiment searches for optical signals associated with Gamma Ray Bursts. III. The neutrino program has now entered a new stage. Data analysis from SuperKamiokande and K2K experiments continues, and so does participation in the ICARUS program at CERN. A major program of participation in the T2K experiment, using the neutrino beam from a future Tokai high intensity proton accelerator, has been undertaken. IV. Preparations for the soon-to-start operation of the Large Hadron Collider Three teams work on the planned participation in the LHC experiments: - CMS; - LHCb; - ALICE. In particular, a major experimental effort is being put into the commissioning of the CMS muon trigger, after the successful cosmic ray test run. A collaboration with the Division of Particles and Elementary Interactions from the Institute of Experimental Physics of Warsaw University is maintained. This also involves supervising students preparing

  3. Medium-energy theory group. Progress report, July 1, 1976--June 30, 1977

    International Nuclear Information System (INIS)

    Bryan, R.A.

    1977-05-01

    Research carried out during the contract period by R. A. Bryan, principal investigator, and associates R. B. Clark and B. J. VerWest is reported. Most of the work has centered on the nucleon-nucleon interaction at low to intermediate energies and has ranged from purely theoretical studies, such as the behavior of two-pion-exchange Feynman amplitudes at far off-shell initial and final nucleon momenta, to the more practical work of phase-shift analyzing nucleon-nucleon data. One has also investigated the possibility that the NN interaction is not invariant under time-reversal and have provided predictions for some relevant experimental observables for the case where such time-irreversibility is due to short-range processes. Finally, research on topics which fall in the domain of elementary-particle physics but which are felt can lend guidance in trying to determine the NN force at very short distances is completed; this is the current frontier in nucleon-nucleon research. A list of publications is included

  4. Policy options to promote energy efficient and environmentally sound technologies in small- and medium-scale industries

    International Nuclear Information System (INIS)

    Thiruchelvam, M.; Kumar, S.; Visvanathan, C.

    2003-01-01

    The rapid industrialization of Asian developing countries has pushed the need for more energy at the cost of environmental degradation. Though large industries are targeted for energy conservation and pollution prevention, small and medium scale industries (SMI) also contribute to significant pollution. This paper discusses the role of SMI in the economy, its energy consumption and impact on the environment. An overview of the energy and environment policies of China, India, Sri Lanka, the Philippines and Vietnam, and the role of energy efficient and environmentally sound technologies (E 3 ST) as a viable means to meet these modern challenges in SMI is discussed. The barriers faced in adopting these technologies have been identified and an analysis has been done of the various strategies and policy options available to governments to promote E 3 ST in SMI. Examples and illustrations of such successful efforts have also been highlighted

  5. Physics Instructional Resource Usage by High-, Medium-, and Low-Skilled MOOC Students

    Science.gov (United States)

    Balint, Trevor A.; Teodorescu, Raluca; Colvin, Kimberly; Choi, Youn-Jeng; Pritchard, David

    2017-01-01

    In this paper we examine how different types of participants in a physics Massive Open Online Course (MOOC) tend to use the existing course resources. We use data from the 2013 offering of the Massive Open Online Course 8.MReVx designed by the RELATE (REsearch in Learning Assessing and Tutoring Effectively) Group at the Massachusetts Institute of…

  6. Influence of polar medium on the reorganization energy of charge transfer between dyes in a dye sensitized film.

    Science.gov (United States)

    Vaissier, Valérie; Barnes, Piers; Kirkpatrick, James; Nelson, Jenny

    2013-04-07

    We study the kinetics of the lateral hole transfer occurring between dye molecules anchored at the surface of the metal oxide in Dye Sensitized Solar Cells (DSSC). We use Marcus' charge transfer rate equation for which we need the electronic coupling between two molecules (J) and the reorganization energy (λtot). In DSSC the medium surrounding the dyes is highly polar. This means that the contribution of the solvent to the reorganization energy cannot be neglected. Here we elaborate a method to calculate, from first principles, the total (i.e., inner- and outer-sphere) reorganization energy of hole exchange between ruthenium dyes. The influence of the solvent and of the ions in the solvent is incorporated. The inner-sphere reorganization energy depends on the nature of the dye, 0.1 eV for ruthenium dyes with CN ligands, 0.2 eV for ruthenium dyes with NCS ligands. In acetonitrile, the solvent reorganization energy contributes for at least 80% of the total giving a total reorganization energy of around 0.86 eV for ruthenium dyes with CN ligands and 0.95 eV for ruthenium dyes with NCS ligands. We use these results to estimate the rate of hole transfer within Marcus theory. We suggest that low diffusion coefficients observed experimentally may arise from the high polarity of the medium rather than by the chemical structure of the dye.

  7. Energy service contracts in regional engineering center for small and medium businesses

    Science.gov (United States)

    Gil'manshin, I. R.; Kashapov, N. F.

    2014-12-01

    The analysis of the energy service contracts development in Russia is given in the article. The role of the Complex learning centres in the field of energy efficiency in the promotion of energy service contracts is described. The reasons of constraining the development of energy service contracts are described.

  8. Physics Instructional Resource Usage by High-, Medium-, and Low-Skilled MOOC Students

    Science.gov (United States)

    Balint, Trevor A.; Teodorescu, Raluca; Colvin, Kimberly; Choi, Youn-Jeng; Pritchard, David

    2017-04-01

    In this paper we examine how different types of participants in a physics Massive Open Online Course (MOOC) tend to use the existing course resources. We use data from the 2013 offering of the Massive Open Online Course 8.MReVx designed by the RELATE (REsearch in Learning Assessing and Tutoring Effectively) Group at the Massachusetts Institute of Technology and offered on the edX platform. We propose six measures of student performance in a course, and, based on these measures, we divide the student population into clusters and analyze the resource usage of the students from each cluster. This course contains a wide variety of physics problems targeting various levels of thinking. Our analysis focuses on 1080 participants (out of 16,787 enrolled in the course) who attempted more than 50% of available problems, as this is an indicator of students who participated actively in the entire course.

  9. High energy physics program at Texas A ampersand M University

    International Nuclear Information System (INIS)

    1992-12-01

    The Texas A ampersand M experimental high energy physics program has been supported since its inception by DOE Contract DE-AS05-81ER40039. During that period we established a viable experimental program at a university which before this time had no program in high energy physics. In 1990, the experimental program was augmented with a program in particle theory. In the accompanying final report, we outline the research work accomplished during the final year of this contract and the program being proposed for consideration by the Department of Energy for future grant support. Some of the particular areas covered are: Collider detector at Fermilab program; the TAMU MACRO program; SSC R ampersand D program; SSC experimental program; and theoretical physics program

  10. The role of small and medium reactors in the energy security of a country, IRIS example

    International Nuclear Information System (INIS)

    Cavlina, N.

    2010-01-01

    Nuclear options for electricity generations are assessed in this paper. Probabilistic (stochastic) method is used for economic comparison of nuclear power plants, wind plants and natural gas fired plants. Optimal nuclear power plant size is also discussed. IRIS is presented as a representative of small and medium reactors

  11. Medium energy measurements of N-N parameters. Progress in research, January 1, 1983-December 31, 1983

    International Nuclear Information System (INIS)

    1983-12-01

    The aim of the experimental program is the determination of the nucleon-nucleon amplitudes at medium energy. Experiments described include D/sub SS/, D/sub LS/, D/sub SL/, D/sub LL/, and P for p-p elastic scattering, the measurement of polarization observables in ppvector → pvector π + nu and ppvector → ppvector π, and measurements of the spin rotation parameters for pvector d → pvector d elastic scattering at 496, 647, and 800 MeV. Also, progress on an energy dependent proton-carbon analyzing power fit is reported. Current approved LAMPF proposals are described and 1983 publications are listed

  12. High Energy Physics at the University of Illinois

    Energy Technology Data Exchange (ETDEWEB)

    Liss, Tony M. [University of Illinois; Thaler, Jon J. [University of Illinois

    2013-07-26

    This is the final report for DOE award DE-FG02-91ER40677 (“High Energy Physics at the University of Illinois”), covering the award period November 1, 2009 through April 30, 2013. During this period, our research involved particle physics at Fermilab and CERN, particle physics related cosmology at Fermilab and SLAC, and theoretical particle physics. Here is a list of the activities described in the final report: * The CDF Collaboration at the Fermilab Tevatron * Search For Lepton Flavor Violation in the Mu2e Experiment At Fermilab * The ATLAS Collaboration at the CERN Large Hadron Collider * the Study of Dark Matter and Dark Energy: DES and LSST * Lattice QCD * String Theory and Field Theory * Collider Phenomenology

  13. CERN and high energy physics, the grand picture

    CERN Multimedia

    CERN. Geneva

    2010-01-01

    The lecture will touch on several topics, to illustrate the role of CERN in the present and future of high-energy physics: how does CERN work? What is the role of the scientific community, of bodies like Council and SPC, and of international cooperation, in the definition of CERN's scientific programme? What are the plans for the future of the LHC and of the non-LHC physics programme? What is the role of R&D and technology transfer at CERN?

  14. HIGH ENERGY PHYSICS: Bulgarians Sue CERN for Leniency.

    Science.gov (United States)

    Koenig, R

    2000-10-13

    In cash-strapped Bulgaria, scientists are wondering whether a ticket for a front-row seat in high-energy physics is worth the price: Membership dues in CERN, the European particle physics lab, nearly equal the country's entire budget for competitive research grants. Faced with that grim statistic and a plea for leniency from Bulgaria's government, CERN's governing council is considering slashing the country's membership dues for the next 2 years.

  15. Dose to tissue medium or water cavities as surrogate for the dose to cell nuclei at brachytherapy photon energies

    Science.gov (United States)

    Enger, Shirin A.; Ahnesjö, Anders; Verhaegen, Frank; Beaulieu, Luc

    2012-07-01

    It has been suggested that modern dose calculation algorithms should be able to report absorbed dose both as dose to the local medium, Dm,m, and as dose to a water cavity embedded in the medium, Dw,m, using conversion factors from cavity theory. Assuming that the cell nucleus with its DNA content is the most important target for biological response, the aim of this study is to investigate, by means of Monte Carlo (MC) simulations, the relationship of the dose to a cell nucleus in a medium, Dn,m, to Dm,m and Dw,m, for different combinations of cell nucleus compositions and tissue media for different photon energies used in brachytherapy. As Dn,m is very impractical to calculate directly for routine treatment planning, while Dm,m and Dw,m are much easier to obtain, the questions arise which one of these quantities is the best surrogate for Dn,m and which cavity theory assumptions should one use for its estimate. The Geant4.9.4 MC code was used to calculate Dm,m, Dw,m and Dn,m for photon energies from 20 (representing the lower energy end of brachytherapy for 103Pd or125I) to 300 keV (close to the mean energy of 192Ir) and for the tissue media adipose, breast, prostate and muscle. To simulate the cell and its nucleus, concentric spherical cavities were placed inside a cubic phantom (10 × 10 × 10 mm3). The diameter of the simulated nuclei was set to 14 µm. For each tissue medium, three different setups were simulated; (a) Dn,m was calculated with nuclei embedded in tissues (MC-Dn,m). Four different published elemental compositions of cell nuclei were used. (b) Dw,m was calculated with MC (MC-Dw,m) and compared with large cavity theory calculated Dw,m (LCT-Dw,m), and small cavity theory calculated Dw,m (SCT-Dw,m). (c) Dm,m was calculated with MC (MC-Dm,m). MC-Dw,m is a good substitute for MC-Dn,m for all photon energies and for all simulated nucleus compositions and tissue types. SCT-Dw,m can be used for most energies in brachytherapy, while LCT-Dw,m should only be

  16. An Experimental and Theoretical High Energy Physics Program

    Energy Technology Data Exchange (ETDEWEB)

    Shipsey, Ian

    2012-07-31

    The Purdue High Energy Physics Group conducts research in experimental and theoretical elementary particle physics and experimental high energy astrophysics. Our goals, which we share with high energy physics colleagues around the world, are to understand at the most fundamental level the nature of matter, energy, space and time, and in order to explain the birth, evolution and fate of the Universe. The experiments in which we are currently involved are: CDF, CLEO-c, CMS, LSST, and VERITAS. We have been instrumental in establishing two major in-house facilities: The Purdue Particle Physics Microstructure Detector Facility (P3MD) in 1995 and the CMS Tier-2 center in 2005. The research efforts of the theory group span phenomenological and theoretical aspects of the Standard Model as well as many of its possible extensions. Recent work includes phenomenological consequences of supersymmetric models, string theory and applications of gauge/gravity duality, the cosmological implications of massive gravitons, and the physics of extra dimensions.

  17. Data Preservation and Long Term Analysis in High Energy Physics

    Science.gov (United States)

    South, D. M.

    2012-12-01

    Several important and unique experimental high-energy physics programmes at a variety of facilities are coming to an end, including those at HERA, the B-factories and the Tevatron. The wealth of physics data from these experiments is the result of a significant financial and human effort, and yet until recently no coherent strategy existed for data preservation and re-use. To address this issue, an inter-experimental study group on data preservation and long-term analysis in high-energy physics was convened at the end of 2008, publishing an interim report in 2009. The membership of the study group has since expanded, including the addition of the LHC experiments, and a full status report has now been released. This report greatly expands on the ideas contained in the original publication and provides a more solid set of recommendations, not only concerning data preservation and its implementation in high-energy physics, but also the future direction and organisational model of the study group. The main messages of the status report were presented for the first time at the 2012 International Conference on Computing in High Energy and Nuclear Physics and are summarised in these proceedings.

  18. Laboratory for Nuclear Science. High Energy Physics Program

    Energy Technology Data Exchange (ETDEWEB)

    Milner, Richard [Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)

    2014-07-30

    High energy and nuclear physics research at MIT is conducted within the Laboratory for Nuclear Science (LNS). Almost half of the faculty in the MIT Physics Department carry out research in LNS at the theoretical and experimental frontiers of subatomic physics. Since 2004, the U.S. Department of Energy has funded the high energy physics research program through grant DE-FG02-05ER41360 (other grants and cooperative agreements provided decades of support prior to 2004). The Director of LNS serves as PI. The grant supports the research of four groups within LNS as “tasks” within the umbrella grant. Brief descriptions of each group are given here. A more detailed report from each task follows in later sections. Although grant DE-FG02-05ER41360 has ended, DOE continues to fund LNS high energy physics research through five separate grants (a research grant for each of the four groups, as well as a grant for AMS Operations). We are pleased to continue this longstanding partnership.

  19. Compilation of current high-energy-physics experiments

    International Nuclear Information System (INIS)

    Wohl, C.G.; Kelly, R.L.; Armstrong, F.E.

    1980-04-01

    This is the third edition of a compilation of current high energy physics experiments. It is a collaborative effort of the Berkeley Particle Data Group, the SLAC library, and ten participating laboratories: Argonne (ANL), Brookhaven (BNL), CERN, DESY, Fermilab (FNAL), the Institute for Nuclear Study, Tokyo (INS), KEK, Rutherford (RHEL), Serpukhov (SERP), and SLAC. The compilation includes summaries of all high energy physics experiments at the above laboratories that (1) were approved (and not subsequently withdrawn) before about January 1980, and (2) had not completed taking of data by 1 January 1976

  20. Compilation of current high-energy-physics experiments

    Energy Technology Data Exchange (ETDEWEB)

    Wohl, C.G.; Kelly, R.L.; Armstrong, F.E.

    1980-04-01

    This is the third edition of a compilation of current high energy physics experiments. It is a collaborative effort of the Berkeley Particle Data Group, the SLAC library, and ten participating laboratories: Argonne (ANL), Brookhaven (BNL), CERN, DESY, Fermilab (FNAL), the Institute for Nuclear Study, Tokyo (INS), KEK, Rutherford (RHEL), Serpukhov (SERP), and SLAC. The compilation includes summaries of all high energy physics experiments at the above laboratories that (1) were approved (and not subsequently withdrawn) before about January 1980, and (2) had not completed taking of data by 1 January 1976.

  1. Predictions for the energy loss of light ions in laser-generated plasmas at low and medium velocities.

    Science.gov (United States)

    Cayzac, W; Bagnoud, V; Basko, M M; Blažević, A; Frank, A; Gericke, D O; Hallo, L; Malka, G; Ortner, A; Tauschwitz, An; Vorberger, J; Roth, M

    2015-11-01

    The energy loss of light ions in dense plasmas is investigated with special focus on low to medium projectile energies, i.e., at velocities where the maximum of the stopping power occurs. In this region, exceptionally large theoretical uncertainties remain and no conclusive experimental data are available. We perform simulations of beam-plasma configurations well suited for an experimental test of ion energy loss in highly ionized, laser-generated carbon plasmas. The plasma parameters are extracted from two-dimensional hydrodynamic simulations, and a Monte Carlo calculation of the charge-state distribution of the projectile ion beam determines the dynamics of the ion charge state over the whole plasma profile. We show that the discrepancies in the energy loss predicted by different theoretical models are as high as 20-30%, making these theories well distinguishable in suitable experiments.

  2. Performance characteristics of a diesel engine using low- and medium-energy gases as a fuel supplement (fumigation)

    Science.gov (United States)

    Monford, L. G.

    1976-01-01

    The use of low- and medium-energy gases derived from solid waste is investigated. Gases that simulate those gases that could be derived from refuse were injected into the air inlet of a 298-kilowatt (400 horsepower) diesel engine as a fuel supplement. This process is called fumigation. Three different gases with thermal-energy contents of 6.11 MJ/cu m (164 Btu/cu ft), 18.1 MJ/cu m (485 Btu/cu ft), and 18.8 MJ/cu m (505 Btu/cu ft, respectively, were used at rates ranging as high as 20 percent of the normal fuel oil energy at four different engine load points. The test results indicated approximately 100 percent gas energy utilization with no observable deleterious effect on the engine.

  3. Experimental and theoretical high energy physics research. [UCLA

    Energy Technology Data Exchange (ETDEWEB)

    Buchanan, Charles D.; Cline, David B.; Byers, N.; Ferrara, S.; Peccei, R.; Hauser, Jay; Muller, Thomas; Atac, Muzaffer; Slater, William; Cousins, Robert; Arisaka, Katsushi

    1992-01-01

    Progress in the various components of the UCLA High-Energy Physics Research program is summarized, including some representative figures and lists of resulting presentations and published papers. Principal efforts were directed at the following: (I) UCLA hadronization model, PEP4/9 e{sup +}e{sup {minus}} analysis, {bar P} decay; (II) ICARUS and astroparticle physics (physics goals, technical progress on electronics, data acquisition, and detector performance, long baseline neutrino beam from CERN to the Gran Sasso and ICARUS, future ICARUS program, and WIMP experiment with xenon), B physics with hadron beams and colliders, high-energy collider physics, and the {phi} factory project; (III) theoretical high-energy physics; (IV) H dibaryon search, search for K{sub L}{sup 0} {yields} {pi}{sup 0}{gamma}{gamma} and {pi}{sup 0}{nu}{bar {nu}}, and detector design and construction for the FNAL-KTeV project; (V) UCLA participation in the experiment CDF at Fermilab; and (VI) VLPC/scintillating fiber R D.

  4. Introduction to optical computing applied to high energy physics experiments

    International Nuclear Information System (INIS)

    Metzger, G.

    1978-01-01

    The topic covered is 'Electro-optical means of implementation of a special-purpose processor dedicated to high-energy physics experiments'. Basic principles of optical computing are given and some means to overcome the limitations of the techniques are treated: analysis of real time electro-optical transducers in respect of their matching to high energy detectors, special complex filtering dedicated to pattern analysis. (Auth.)

  5. Students' Energy Understanding Across Biology, Chemistry, and Physics Contexts

    Science.gov (United States)

    Opitz, S. T.; Neumann, K.; Bernholt, S.; Harms, U.

    2017-07-01

    Energy is considered both as a disciplinary core idea and as a concept cutting across science disciplines. Most previous approaches studied progressing energy understanding in specific disciplinary contexts, while disregarding the relation of understanding across them. Hence, this study provides a systematic analysis of cross-disciplinary energy learning. On the basis of a cross-sectional study with n = 742 students from grades 6, 8, and 10, we analyze students' progression in understanding energy across biology, chemistry, and physics contexts. The study is guided by three hypothetical scenarios that describe how the connection between energy understanding in the three disciplinary contexts changes across grade levels. These scenarios are compared using confirmatory factor analysis (CFA). The results suggest that, from grade 6 to grade 10, energy understanding in the three disciplinary contexts is highly interrelated, thus indicating a parallel progression of energy understanding in the three disciplinary contexts. In our study, students from grade 6 onwards appeared to have few problems to apply one energy understanding across the three disciplinary contexts. These findings were unexpected, as previous research concluded that students likely face difficulties in connecting energy learning across disciplinary boundaries. Potential reasons for these results and the characteristics of the observed cross-disciplinary energy understanding are discussed in the light of earlier findings and implications for future research, and the teaching of energy as a core idea and a crosscutting concept are addressed.

  6. 2nd International Summer School in High Energy Physics

    CERN Document Server

    Pak, N K; Serin, M; The Standard Model and Beyond

    2008-01-01

    This volume collects the edited tutorial lectures given at The Second International Summer School in High Energy Physics in Mgla, Turkey, in September 2006 - an annual event with international participation and a special focus on work done in the regions of central Asia. With emphasis on the standard model and beyond, lectures were devoted to presenting an introduction and update to many of the relevant topics, such as chiral perturbation theory, the Higgs mechanism, heavy flavour and b physics, CP violation, the AdS/CFT correspondence, ideas on grand unification and neutrino physics and astrophysics

  7. Physics understanding the properties of matter and energy

    CERN Document Server

    2015-01-01

    Without physics, modern life would not exist. Instead of electric light, we would read by the light of candles. We couldn''t build skyscrapers. We could not possibly bridge rivers, much less build a jet or interplanetary craft. Computers and smartphones would be unimaginable. Physics is concerned with the most fundamental aspects of matter and energy and how they interact to make the physical universe work. In accessible language and with explanatory graphics and visual aids, this book introduces readers to the science that is at the very center of all other sciences and essential to our very

  8. Current state and prospects of high energy physics

    International Nuclear Information System (INIS)

    Okun', L.B.

    1982-01-01

    Experimental and theoretical research into high energy physics is subordinated to the only goal, ie., discovering the fundamental physical laws of Nature. Currently, the quantum field theory has been formulated of electromagnetic, weak and strong interactions, ie., three of the four basic interactions. Efforts are exerted to develop a unified theory of all interactions including the quantum gravitation theory. The following problems are reviewed: fundamental principles, fundamental particles, electromagnetic interactions, weak interactions, strong interactions, scalars, technicolor and new TeV range physics, grand unification, superunification, astrophysics and cosmology, new stable particles, and new types of far-reaching interactions. (Ha)

  9. Energy technologies for Post Kyoto targets in the medium term. Proceedings

    DEFF Research Database (Denmark)

    2003-01-01

    The Risø International Energy Conference took place 19 - 21 May 2003 and the aim was to present and discuss new developments and trends in energy technologies which may become main contributors to the energy scene in 15 to 20 years. The conferenceaddressed R&D related to the individual technologies...

  10. 76 FR 8358 - DOE/NSF High Energy Physics Advisory Panel

    Science.gov (United States)

    2011-02-14

    ... DEPARTMENT OF ENERGY DOE/NSF High Energy Physics Advisory Panel AGENCY: Department of Energy.../NSF High Energy Physics Advisory Panel (HEPAP). Federal Advisory Committee Act (Pub. L. 92-463, 86... Secretary; High Energy Physics Advisory Panel; U.S. Department of Energy; SC-25/ Germantown Building, 1000...

  11. 76 FR 41234 - DOE/NSF High Energy Physics Advisory Panel

    Science.gov (United States)

    2011-07-13

    ... DEPARTMENT OF ENERGY DOE/NSF High Energy Physics Advisory Panel AGENCY: Department of Energy.../NSF High Energy Physics Advisory Panel (HEPAP). The Federal Advisory Committee Act (Pub. L. 92-463, 86... Secretary; High Energy Physics Advisory Panel; U.S. Department of Energy; SC-25/ Germantown Building, 1000...

  12. 75 FR 57463 - DOE/NSF High Energy Physics Advisory Panel

    Science.gov (United States)

    2010-09-21

    ... DEPARTMENT OF ENERGY DOE/NSF High Energy Physics Advisory Panel AGENCY: Department of Energy.../NSF High Energy Physics Advisory Panel (HEPAP). Federal Advisory Committee Act (Pub. L. 92-463, 86... Secretary; High Energy Physics Advisory Panel; U.S. Department of Energy; SC-25/ Germantown Building, 1000...

  13. 78 FR 69839 - DOE/NSF High Energy Physics Advisory Panel

    Science.gov (United States)

    2013-11-21

    ... DEPARTMENT OF ENERGY DOE/NSF High Energy Physics Advisory Panel AGENCY: Department of Energy.../NSF High Energy Physics Advisory Panel (HEPAP). The Federal Advisory Committee Act (Pub. L. 92-463, 86... CONTACT: John Kogut, Executive Secretary; High Energy Physics Advisory Panel; U.S. Department of Energy...

  14. 77 FR 4027 - DOE/NSF High Energy Physics Advisory Panel

    Science.gov (United States)

    2012-01-26

    ... DEPARTMENT OF ENERGY DOE/NSF High Energy Physics Advisory Panel AGENCY: Department of Energy.../NSF High Energy Physics Advisory Panel (HEPAP). The Federal Advisory Committee Act (Pub. L. 92-463, 86... Secretary; High Energy Physics Advisory Panel; U.S. Department of Energy; SC-25/ Germantown Building, 1000...

  15. Evaluation of Monte Carlo tools for high energy atmospheric physics

    Directory of Open Access Journals (Sweden)

    C. Rutjes

    2016-11-01

    Full Text Available The emerging field of high energy atmospheric physics (HEAP includes terrestrial gamma-ray flashes, electron–positron beams and gamma-ray glows from thunderstorms. Similar emissions of high energy particles occur in pulsed high voltage discharges. Understanding these phenomena requires appropriate models for the interaction of electrons, positrons and photons of up to 40 MeV energy with atmospheric air. In this paper, we benchmark the performance of the Monte Carlo codes Geant4, EGS5 and FLUKA developed in other fields of physics and of the custom-made codes GRRR and MC-PEPTITA against each other within the parameter regime relevant for high energy atmospheric physics. We focus on basic tests, namely on the evolution of monoenergetic and directed beams of electrons, positrons and photons with kinetic energies between 100 keV and 40 MeV through homogeneous air in the absence of electric and magnetic fields, using a low energy cutoff of 50 keV. We discuss important differences between the results of the different codes and provide plausible explanations. We also test the computational performance of the codes. The Supplement contains all results, providing a first benchmark for present and future custom-made codes that are more flexible in including electrodynamic interactions.

  16. A compilation of energy costs of physical activities.

    Science.gov (United States)

    Vaz, Mario; Karaolis, Nadine; Draper, Alizon; Shetty, Prakash

    2005-10-01

    There were two objectives: first, to review the existing data on energy costs of specified activities in the light of the recommendations made by the Joint Food and Agriculture Organization/World Health Organization/United Nations University (FAO/WHO/UNU) Expert Consultation of 1985. Second, to compile existing data on the energy costs of physical activities for an updated annexure of the current Expert Consultation on Energy and Protein Requirements. Electronic and manual search of the literature (predominantly English) to obtain published data on the energy costs of physical activities. The majority of the data prior to 1955 were obtained using an earlier compilation of Passmore and Durnin. Energy costs were expressed as physical activity ratio (PAR); the energy cost of the activity divided by either the measured or predicted basal metabolic rate (BMR). The compilation provides PARs for an expanded range of activities that include general personal activities, transport, domestic chores, occupational activities, sports and other recreational activities for men and women, separately, where available. The present compilation is largely in agreement with the 1985 compilation, for activities that are common to both compilations. The present compilation has been based on the need to provide data on adults for a wide spectrum of human activity. There are, however, lacunae in the available data for many activities, between genders, across age groups and in various physiological states.

  17. High Energy Physics at Tufts University Final Report

    Energy Technology Data Exchange (ETDEWEB)

    Goldstein, Gary R. [Tufts Univ., Medford, MA (United States); Oliver, William P. [Tufts Univ., Medford, MA (United States); Napier, Austin [Tufts Univ., Medford, MA (United States); Gallagher, Hugh R. [Tufts Univ., Medford, MA (United States)

    2012-07-18

    In this Final Report, we the researchers of the high energy physics group at Tufts University summarize our works and achievements in three frontier areas of elementary particle physics: (i) Neutrino physics at the Intensity Frontier, (ii) Collider physics at the Energy Frontier, and (iii) Theory investigations of spin structure and quark-gluon dynamics of nucleons using quantum chromodynamics. With our Neutrino research we completed, or else brought to a useful state, the following: Data-taking, physics simulations, physics analysis, physics reporting, explorations of matter effects, and detector component fabrication. We conducted our work as participants in the MINOS, NOvA, and LBNE neutrino oscillation experiments and in the MINERvA neutrino scattering experiment. With our Collider research we completed or else brought to a useful state: Data-taking, development of muon system geometry and tracking codes, software validation and maintenance, physics simulations, physics analysis, searches for new particles, and study of top-quark and B-quark systems. We conducted these activities as participants in the ATLAS proton-proton collider experiment at CERN and in the CDF proton-antiproton collider experiment at Fermilab. In our Theory research we developed QCD-based models, applications of spin phenomenology to fundamental systems, fitting of models to data, presenting and reporting of new concepts and formalisms. The overarching objectives of our research work have always been: 1) to test and clarify the predictions of the Standard Model of elementary particle physics, and 2) to discover new phenomena which may point the way to a more unified theoretical framework.

  18. The COS-Halos survey: physical conditions and baryonic mass in the low-redshift circumgalactic medium

    Energy Technology Data Exchange (ETDEWEB)

    Werk, Jessica K.; Prochaska, J. Xavier; Tejos, Nicolas [UCO/Lick Observatory, University of California, Santa Cruz, CA (United States); Tumlinson, Jason; Peeples, Molly S.; Fox, Andrew J.; Thom, Christopher; Bordoloi, Rongmon [Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD (United States); Tripp, Todd M.; Katz, Neal [Department of Astronomy, University of Massachusetts, Amherst, MA (United States); Lehner, Nicolas [Department of Physics and Astronomy, University of Notre Dame, South Bend, IN (United States); O' Meara, John M. [Department of Chemistry and Physics, Saint Michael' s College, Colchester, VT (United States); Ford, Amanda Brady [Astronomy Department, University of Arizona, Tucson, AZ 85721 (United States); Oppenheimer, Benjamin D. [Leiden Observatory, Leiden University, NL-2300 RA Leiden (Netherlands); Davé, Romeel [University of the Western Cape, Bellville, Cape Town 7535 (South Africa); Weinberg, David H., E-mail: jwerk@ucolick.org [Department of Astronomy, The Ohio State University, Columbus, OH (United States)

    2014-09-01

    We analyze the physical conditions of the cool, photoionized (T ∼10{sup 4} K) circumgalactic medium (CGM) using the COS-Halos suite of gas column density measurements for 44 gaseous halos within 160 kpc of L ∼ L* galaxies at z ∼ 0.2. These data are well described by simple photoionization models, with the gas highly ionized (n {sub H} {sub II}/n {sub H} ≳ 99%) by the extragalactic ultraviolet background. Scaling by estimates for the virial radius, R {sub vir}, we show that the ionization state (tracked by the dimensionless ionization parameter, U) increases with distance from the host galaxy. The ionization parameters imply a decreasing volume density profile n {sub H} = (10{sup –4.2±0.25})(R/R {sub vir}){sup –0.8±0.3}. Our derived gas volume densities are several orders of magnitude lower than predictions from standard two-phase models with a cool medium in pressure equilibrium with a hot, coronal medium expected in virialized halos at this mass scale. Applying the ionization corrections to the H I column densities, we estimate a lower limit to the cool gas mass M{sub CGM}{sup cool}>6.5×10{sup 10} M {sub ☉} for the volume within R < R {sub vir}. Allowing for an additional warm-hot, O VI-traced phase, the CGM accounts for at least half of the baryons purported to be missing from dark matter halos at the 10{sup 12} M {sub ☉} scale.

  19. Calorimeters for Precision Timing Measurements in High Energy Physics

    Science.gov (United States)

    Bornheim, Adolf; Apresyan, Artur; Duarte, Javier; Pena, Cristian; Ronzhin, Anatoly; Spiropulu, Maria; Xie, Si

    2015-02-01

    Current and future high energy physics particle colliders are capable to provide instantaneous luminosities of 1034 cm-2s-1 and above. The high center of mass energy, the large number of simultaneous collision of beam particles in the experiments and the very high repetition rates of the collision events pose huge challenges. They result in extremely high particle fluxes, causing very high occupancies in the particle physics detectors operating at these machines. To reconstruct the physics events, the detectors have to make as much information as possible available on the final state particles. We discuss how timing information with a precision of around 10 ps and below can aid the reconstruction of the physics events under such challenging conditions. High energy photons play a crucial role in this context. About one third of the particle flux originating from high energy hadron collisions is detected as photons, stemming from the decays of neutral mesons. In addition, many key physics signatures under study are identified by high energy photons in the final state. They pose a particular challenge in that they can only be detected once they convert in the detector material. The particular challenge in measuring the time of arrival of a high energy photon lies in the stochastic component of the distance to the initial conversion and the size of the electromagnetic shower. They extend spatially over distances which propagation times of the initial photon and the subsequent electromagnetic shower which are large compared to the desired precision. We present studies and measurements from test beams and a cosmic muon test stand for calorimeter based timing measurements to explore the ultimate timing precision achievable for high energy photons of 10 GeV and above. We put particular focus on techniques to measure the timing with a precision of about 10 ps in association with the energy of the photon. For calorimeters utilizing scintillating materials and light guiding

  20. Recent results in the development of a global medium-energy nucleon-nucleus optical-model potential

    International Nuclear Information System (INIS)

    Madland, D.G.

    1988-02-01

    Initial results are presented for the determination of a global medium-energy nucleon-nucleus phenomenological optical-model potential using a relativistic Schroedinger representation. The starting point for this work is the global phenomenological optical-model potential of Schwandt /ital et al./, which is based on measured elastic scattering cross sections and analyzing power for polarized protons ranging from 80 to 180 MeV. This potential is optimally modified to reproduce experimental proton reaction cross sections as a function of energy, while allowing only minimal deterioration in the fits to the elastic cross sections and analyzing powers. Further modifications in the absorptive potential were found necessary to extrapolate the modified potential to higher energies. The final potential is converted to a neutron-nucleus potential by use of standard Lane model assumptions and by accounting approximately for the Coulomb correction. Comparisons of measured and calculated proton reaction and neutron total cross sections are presented for 27 Al, 56 Fe, and 208 Pb. Medium-energy optical-model potentials for complex projectiles are briefly discussed in an appendix. 7 refs., 20 figs

  1. Annual report 1997. Wind Energy and Atmospheric Physics Department

    Energy Technology Data Exchange (ETDEWEB)

    Madsen, P.H.; Dannemand Andersen, P.; Skrumsager, B. [eds.

    1998-08-01

    The report describes the work of the Wind Energy and Atmospheric Physics Department at Risoe National Laboratory during 1997. The research of the department aims to develop new opportunities in the exploitation of wind energy and to map and alleviate atmospheric aspects of environmental problems. The expertise of the department is utilised in commercial activities such as wind turbine testing and certification, training programmes, courses and consultancy services to industry, authorities and Danish and international organisations on wind energy and atmospheric environmental impact. (au)

  2. Progress report 1986. Laboratory of high energy nuclear physics

    International Nuclear Information System (INIS)

    1987-01-01

    A study of hadron structure using neutrino interactions; high energy photon interactions; a search for gluinos; a spectrometer for the study of quark fusion and structure functions; measurement of the real part of the pp - scattering amplitude at 546 GeV; measurement of photon production in the fragmentation region of pp - interactions at 630 GeV; investigation of very high energy nucleus-nucleus interactions: the quagma; an experience on nucleon stability; as well as high energy nuclear physics research facilities are described [fr

  3. Annual progress report 2000. Wind Energy and Atmospheric Physics Dept.

    Energy Technology Data Exchange (ETDEWEB)

    Larsen, S.E.; Skrumsager, B. [eds.

    2001-05-01

    The report describes the work of the Wind Energy and Atmospheric Physics Department at Risoe National Laboratory in 2000. The research of the department aims to develop new opportunities in the exploitation of wind energy and to map and alleviate atmospheric aspects of environmental problems. The expertise of the department is utilised in commercial activities such as wind turbine testing and certification, training programmes, courses and consultancy services to industry, authorities and Danish and international organisations on wind energy and atmospheric environmental impact. A summary of the department's activities in 2000 is shown, including lists of publications, lectures, committees and staff members. (au)

  4. Annual progress report 2000. Wind Energy and Atmospheric Physics Department

    International Nuclear Information System (INIS)

    Larsen, S.E.; Skrumsager, B.

    2001-05-01

    The report describes the work of the Wind Energy and Atmospheric Physics Department at Risoe National Laboratory in 2000. The research of the department aims to develop new opportunities in the exploitation of wind energy and to map and alleviate atmospheric aspects of environmental problems. The expertise of the department is utilised in commercial activities such as wind turbine testing and certification, training programmes, courses and consultancy services to industry, authorities and Danish and international organisations on wind energy and atmospheric environmental impact. A summary of the department's activities in 2000 is shown, including lists of publications, lectures, committees and staff members. (au)

  5. Annual progress report 2000. Wind Energy and Atmospheric Physics Department

    Energy Technology Data Exchange (ETDEWEB)

    Larsen, S.E.; Skrumsager, B. (eds.)

    2001-05-01

    The report describes the work of the Wind Energy and Atmospheric Physics Department at Risoe National Laboratory in 2000. The research of the department aims to develop new opportunities in the exploitation of wind energy and to map and alleviate atmospheric aspects of environmental problems. The expertise of the department is utilised in commercial activities such as wind turbine testing and certification, training programmes, courses and consultancy services to industry, authorities and Danish and international organisations on wind energy and atmospheric environmental impact. A summary of the department's activities in 2000 is shown, including lists of publications, lectures, committees and staff members. (au)

  6. Mighty Murines: Neutrino Physics at very high Energy Muon Colliders

    International Nuclear Information System (INIS)

    King, B.J.

    2000-01-01

    An overview is given of the potential for neutrino physics studies through parasitic use of the intense high energy neutrino beams that would be produced at future many-TeV muon colliders. Neutrino experiments clearly cannot compete with the collider physics. Except at the very highest energy muon colliders, the main thrust of the neutrino physics program would be to improve on the measurements from preceding neutrino experiments at lower energy muon colliders, particularly in the fields of B physics, quark mixing and CP violation. Muon colliders at the 10 TeV energy scale might already produce of order 10 8 B hadrons per year in a favorable and unique enough experimental environment to have some analytical capabilities beyond any of the currently operating or proposed B factories. The most important of the quark mixing measurements at these energies might well be the improved measurements of the important CKM matrix elements |V ub | and |V cb | and, possibly, the first measurements of |V td | in the process of flavor changing neutral current interactions involving a top quark loop. Muon colliders at the highest center-of-mass energies that have been conjectured, 100--1,000 TeV, would produce neutrino beams for neutrino-nucleon interaction experiments with maximum center-of-mass energies from 300--1,000 GeV. Such energies are close to, or beyond, the discovery reach of all colliders before the turn-on of the LHC. In particular, they are comparable to the 314 GeV center-of-mass energy for electron-proton scattering at the currently operating HERA collider and so HERA provides a convenient benchmark for the physics potential. It is shown that these ultimate terrestrial neutrino experiments, should they eventually come to pass, would have several orders of magnitude more luminosity than HERA. This would potentially open up the possibility for high statistics studies of any exotic particles, such as leptoquarks, that might have been previously discovered at these

  7. Effect of Thermal Treatment of Fast Growing Wood Fibers on Physical and Mechanical Properties of Light Medium Density Fiberboard

    Science.gov (United States)

    Jarusombuti, Songklod; Ayrilmis, Nadir; Fueangvivat, Vallayuth; Bauchongkol, Piyawade

    2011-06-01

    This study investigated physical and mechanical properties of the light medium density fiberboard (MDF) panels made from thermally treated wood fibers of eucalyptus camaldulensis at three different temperatures (393 K, 423 K or 453 K) for 30 or 60 min in a laboratory autoclave. The average thickness swelling of the panels decreased by 16-54% depending on the treatment temperature and time. However, the modulus of rupture, modulus of elasticity, and internal bond strength decreased by 16-37%, 9-25% and 10-39%, respectively. Based on the findings obtained from the present study, it may be said that wood fibers of E. camaldulensis treated at 453 K - 30 min can be used in the light MDF manufacture for use in humid conditions, such as kitchen and bathroom furniture requiring improved dimensional stability.

  8. SLAC workshop on high energy electroproduction and spin physics

    International Nuclear Information System (INIS)

    1992-01-01

    These Proceedings contain copies of the transparencies presented at the Workshop on High Energy Electroproduction and Spin Physics held at SLAC on February 5--8, 1992. The purpose of this Workshop was to bring people together to discuss the possibilities for new experiments using the SLAC high intensity electron and photon beams and the facilities of End Station A

  9. Theoretical research in intermediate energy nuclear physics: Final report

    International Nuclear Information System (INIS)

    Seki, R.

    1987-01-01

    This paper discusses the progress that has been made on the following problems: a numerical calculation of Skyrmiron scattering; (e,e'p) at high momentum transfer; spin-orbit nucleon-nucleon potential from Skyrme model; pionic atom anomaly; and field theory problems. The problems deal with various topics in intermediate-energy nuclear physics

  10. Dictionary of high-energy physics English, German, French, Russian

    International Nuclear Information System (INIS)

    Sube, R.

    1987-01-01

    This volume contains nearly 4500 entries from branches of high-energy physics including cosmic radiation, elementary particles, elementary particle detection and measurement, field theories, and particle accelerators. Each English entry is numbered and followed by corresponding terms in the other languages. Alphabetical indexes of the German, French, and Russian terms are included

  11. The future of OA in high-energy physics

    CERN Multimedia

    2008-01-01

    CERN 's SCOAP3 project has posted a summary of Rolf-Dieter Heuer's talk, Innovation in Scholarly Communication: Vision and Projects from High Energy Physics , at the Academic Publishing in Europe 2008 conference (Berlin, January 21-23, 2008). Heuer is the Research director of DESY and Director-General Elect of CERN .

  12. Data acquisition systems for high energy Physics experiments

    International Nuclear Information System (INIS)

    Duran, I.; Olmos, P.

    1986-01-01

    We describe here the Data Acquisition Systems most frequently used in High Energy Physics experiments. This report begins with a brief description of the main elements of a typical signal processing chain, following with a detailed exposition of the four most popular instrumentation standards used in this kind of experimental: NIM, CAMAC, FASTBUS and VME. (Author) 9 refs

  13. hepawk - A language for scanning high energy physics events

    International Nuclear Information System (INIS)

    Ohl, T.

    1992-01-01

    We present the programming language hepawk, designed for convenient scanning of data structures arising in the simulation of high energy physics events. The interpreter for this language has been implemented in FORTRAN-77, therefore hepawk runs on any machine with a FORTRAN-77 compiler. (orig.)

  14. Indexed compilation of experimental high energy physics literature. [Synopsis

    Energy Technology Data Exchange (ETDEWEB)

    Horne, C.P.; Yost, G.P.; Rittenberg, A.

    1978-09-01

    An indexed compilation of approximately 12,000 experimental high energy physics documents is presented. A synopsis of each document is presented, and the documenta are indexed according to beam/target/momentum, reaction/momentum, final-state-particle, particle/particle-property, accelerator/detector, and (for a limited set of the documents) experiment. No data are given.

  15. Workshop on Energy Research for Physics Graduate Students and Postdocs

    Energy Technology Data Exchange (ETDEWEB)

    Cole, Ken

    2015-03-01

    One-day workshop for a small group of graduate students and post-docs to hear talks and interact with experts in a variety of areas of energy research. The purpose is to provide an opportunity for young physicists to learn about cutting-edge research in which they might find a career utilizing their interest and background in physics.

  16. ASIC design used in high energy physics experiments

    International Nuclear Information System (INIS)

    Zhang Hongyu; Lin Tao; Wu Ling; Zhao jingwei; Gu Shudi

    1997-01-01

    The author introduces an ASIC (Application Specific Integrated Circuit) design environment based on PC. Some design tools used in such environment are also introduced. A kind of ASIC chip used in high energy physics experiment, weighting mean timer, is being developed now

  17. Indexed compilation of experimental high energy physics literature

    International Nuclear Information System (INIS)

    Horne, C.P.; Yost, G.P.; Rittenberg, A.

    1978-09-01

    An indexed compilation of approximately 12,000 experimental high energy physics documents is presented. A synopsis of each document is presented, and the documenta are indexed according to beam/target/momentum, reaction/momentum, final-state-particle, particle/particle-property, accelerator/detector, and (for a limited set of the documents) experiment. No data are given

  18. Theoretical high energy physics research at the University of Chicago

    International Nuclear Information System (INIS)

    Rosner, J.L.; Martinec, E.J.; Sachs, R.G.

    1989-12-01

    This report contains brief discussions on theoretical High Energy Physics research done by the researchers at University of Chicago. Some topics covered are: lepton production; kaon decay; Higgs boson production; electric dipole moment of the neutron; string models; supersymmetry; and cosmic ray shower

  19. Articulated Multimedia Physics, Lesson 13, Internal Energy, Heat, and Temperature.

    Science.gov (United States)

    New York Inst. of Tech., Old Westbury.

    As the thirteenth lesson of the Articulated Multimedia Physics Course, instructional materials are presented in this study guide with relation to internal energy, heat, and temperature. The topics are concerned with collisions, thermometers, friction forces, degrees Centigrade and Fahrenheit, calories, Brownian motion, and state changes. The…

  20. Applications of NAA at Institute of High Energy Physics

    Energy Technology Data Exchange (ETDEWEB)

    Zhang Zhiyong; Chai Zhifang [Chinese Academy of Sciences, Institute of High Energy Physics, Beijing (China)

    2003-03-01

    Recent achievements in application studies of neutron activation analysis (NAA) at Institute of High Energy Physics, The Chinese Academy of Sciences are briefly described. A small number of selected areas and problems, particularly in life sciences, are highlighted because they present challenges for NAA and its prospects in the future. (author)