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1

Experiments  

...here Activities Public engagement Resources Physicists in Primary Schools Topics Forces and springs Experiments Public engagement Resources Physicists in Primary Schools Topics ...Forces and springs Experiments Apparatus Safety notes Experiments Forces and springs: Stretching and bouncing 1. Show them the PEANUTS label on the ... Aims/Facts Establish what the children know about springs.Activity Discussion Explain that you have had a problem with the lid and not ...the tin, pointing it slightly forwards so that the snake or worm springs forwards.See Apparatus List Ask the children what has caused the ...

2

Experiments  

...You are here Activities Public engagement Resources Physicists in Primary Schools Topics Forces and gravity Experiments Public engagement Resources Physicists in Primary ...Schools Topics Forces and gravity Experiments Apparatus Safety notes Experiments Forces and gravity: Is gravity real or does the Earth just suck? ...the children’s interest and to get them to contribute their ideas about forces. It is important to find out how much they already ...Full understanding requires them to have some ideas about turning forces. There is no need to go into details but they have the ...

3

Experiments  

...Topics Electricity generation: Part 1 Experiments Apparatus Safety notes Experiments Electricity Generation Part 1: Magnets and lemons 1. Blow up a balloon and let it ... Generators work because a moving magnet can cause the electrons to move round the circuit. Aim/Facts Moving a magnet near a ... Demonstration of a model generator using a magnet. Aim/Facts Energy used to move the magnet is carried by electrons to where ...is neededActivity Discussion Take the bung from the tube and show the magnet inside. Point out that there is no battery.See Apparatus ...

4

Experiments  

... Slide 2 Aims/Facts To establish that the Sun is very much further away from Earth than the Moon and both distances are very ...try grasp some understanding of the distances between the Earth, Moon and Sun. Explain that these are thought experiments or mental space journeys.... Slide 4 Aims/Facts The Sun is very, very much further away from Earth than the Moon. Activity Discussion Ask them to ...imagine being driven all the way to the Sun and ask them to guess how long it would take. They might vote. ...

5

Immigrant's Experience  

Digital Repository Infrastructure Vision for European Research (DRIVER)

In the following chapters I am going to analyze selected short stories of ethnic writers focusing on and highlighting the immigrants experiences in multi- ethnic societies, and I will show that the themes of quest for identity, a sense of belonging, stereotyping, silence and the role of language, and marginalization are common features of these stories and a shared experience of migrants.

Szabo?, A?gnes

2010-01-01

6

TRIO experiment  

International Nuclear Information System (INIS)

The TRIO experiment is a test of in-situ tritium recovery and heat transfer performance of a miniaturized solid breeder blanket assembly. The assembly (capsule) was monitored for temperature and neutron flux profiles during irradiation and a sweep gas flowed through the capsule to an anaytical train wherein the amounts of tritium in its various chemical forms were determined. The capsule was designed to operate at different temperatures and sweep gas conditions. At the end of the experiment the amount of tritium retained in the solid was at a concentration of less than 0.1 wppM. More than 99.9% of tritium generated during the experiment was successfully recovered. The results of the experiment showed that the tritium inventories at the beginning and at the end of the experiment follow a relationship which appears to be characteristic of intragranular diffusion

1984-01-01

7

Mixture Experiments  

Energy Technology Data Exchange (ETDEWEB)

A mixture experiment involves combining two or more components in various proportions or amounts and then measuring one or more responses for the resulting end products. Other factors that affect the response(s), such as process variables and/or the total amount of the mixture, may also be studied in the experiment. A mixture experiment design specifies the combinations of mixture components and other experimental factors (if any) to be studied and the response variable(s) to be measured. Mixture experiment data analyses are then used to achieve the desired goals, which may include (i) understanding the effects of components and other factors on the response(s), (ii) identifying components and other factors with significant and nonsignificant effects on the response(s), (iii) developing models for predicting the response(s) as functions of the mixture components and any other factors, and (iv) developing end-products with desired values and uncertainties of the response(s). Given a mixture experiment problem, a practitioner must consider the possible approaches for designing the experiment and analyzing the data, and then select the approach best suited to the problem. Eight possible approaches include 1) component proportions, 2) mathematically independent variables, 3) slack variable, 4) mixture amount, 5) component amounts, 6) mixture process variable, 7) mixture of mixtures, and 8) multi-factor mixture. The article provides an overview of the mixture experiment designs, models, and data analyses for these approaches.

Piepel, Gregory F.

2007-12-01

8

MINOS experiment  

International Nuclear Information System (INIS)

MINOS (Main Injector Neutrino Oscillation Search) is a long baseline neutrino oscillation experiment using a neutrino beam produced at Fermilab and a far detector in the Soudan mine in Minnesota. The experiment is designed to explore a large area in the oscillation parameter space, both for the ?? ? ?e and the ?? ?? oscillations. More specifically levels close to 0.01 for sin2 2? should be attainable, and sensitivity should extend to ?m2 = 0.001 eV2 for large mixing angles. In addition, if oscillations are observed, the oscillation made can be identified and the parameters should be measurable with a precision of about 0.001 for ?m2 and 0.05 for sin2 2?. For the region of parameter space suggested by the Kamiokande experiment, the experiment will be able to identify several exclusive ? decay modes. (orig.)

1997-01-01

9

Antimatter Experiments  

CERN Multimedia

Antimatter should behave in identical fashion to matter if a form of spacetime symmetry called CPT invariance holds. Two experiments at CERN near Geneva are testing this hypothesis using antihydrogen atoms

2004-01-01

10

MINOS experiment  

Energy Technology Data Exchange (ETDEWEB)

MINOS (Main Injector Neutrino Oscillation Search) is a long baseline neutrino oscillation experiment using a neutrino beam produced at Fermilab and a far detector in the Soudan mine in Minnesota. The experiment is designed to explore a large area in the oscillation parameter space, both for the {nu}{sub {mu}} {yields} {nu}{sub e} and the {nu}{sub {mu}} {nu}{sub {tau}} oscillations. More specifically levels close to 0.01 for sin{sup 2} 2{theta} should be attainable, and sensitivity should extend to {Delta}m{sup 2} = 0.001 eV{sup 2} for large mixing angles. In addition, if oscillations are observed, the oscillation made can be identified and the parameters should be measurable with a precision of about 0.001 for {Delta}m{sup 2} and 0.05 for sin{sup 2} 2{theta}. For the region of parameter space suggested by the Kamiokande experiment, the experiment will be able to identify several exclusive {tau} decay modes. (orig.)

Wojcicki, S.G. [Stanford Univ., CA (United States). Dept. of Physics

1997-12-31

11

Brazilian Experience.  

Science.gov (United States)

This presentation discusses the technology and experience of Petrobras in the development of deep-water exploitation off the coast of Brazil. The company recently found important oil deposits in waters over 300 m deep in Campos Basin, the main petroleum p...

A. C. S. Agostini

1998-01-01

12

JADE experiment  

International Nuclear Information System (INIS)

JADE will be one of the first five experiments at PETRA, which is scheduled to be available for experiment by the end of 1978. This project is that of the international collaboration of Japan, Germany and England. This paper is devoted to the description of the JADE detector and objectives. The detector consists of a large solid angle magnetic detector together with lead glass shower counters and a muon filter. The layout of the detector is presented with figures. As for the objectives, brief explanations are given for the following scheduled measurements. 1) Measurement of the total annihilation cross section. 2) Search for new particles. 3) Search for electromagnetic-weak interaction interference effects. 4) Study of hadronic final states. 5) Two-photon processes. (Aoki, K.)

1977-06-01

13

Experiment 7  

CERN Multimedia

Over-all view of the arrangement of counters around the polarized target in the kaon-polarized proton experiment. The beam enters through the quadrupole magnet on the left, and strikes the target placed in a 18.5 kG field (one pole of the magnet is just visible above the ring of counters). The scatterred kaon and recoil proton are detected by the counters on the ring and recorded onto magnetic tape.

1968-01-01

14

Work experience  

... IOP Institute of Physics For physics • For physicists • For all Home News About us Contact us Calendar MyIOP Search Join the IOP Events Publications Education Activities Careers Policy Resources You are here Careers I am a careers professional ... Casual work experience, on the other hand, is often obtained by sending speculative CVs - sometimes using a personal contact to oil the wheel. It also tends to last a shorter time - perhaps just a couple of weeks, and the work itself will be more ...

15

Thomson Experiment  

CERN Document Server

This experiment, conducted by JJ Thomson in 1897, established the existence of the electron. Thomson won the Nobel physics prize for this work in 1906. A beam of electrons crosses the chamber emitting blue light. Adding an electric field (E) or a magnetic field (B) exerts a force on the moving electrons.Use switch E to turn on the electric field in the chamber. Then, by turning knob B, you can increase the current in the coils, generating a magnetic field. By balancing the electric and magnetic fields, Thomson was able to keep the electron beam level and deduce the ratio of the electron's charge to its mass.

16

Nova experiments  

International Nuclear Information System (INIS)

Nova's activities are directed toward the experimental demonstration of the feasibility of inertial confinement fusion. The principle experimental tool is the Nova laser facility which has been operational since 1985. During the past year, critical advances were made in laser science and in developing new technologies to improve Nova's routine performance to its original design level. The following pertinent topics are covered in this paper: (1) Nova operation and laser science; (2) amplifier development for the Nova laser; (3) Nova computer systems; (4) laser experiments and advanced diagnostics; and (5) Nova target fabrication. 401 refs., 243 figs., 27 tabs

1989-07-01

17

GRAAL experiment  

International Nuclear Information System (INIS)

GRAAL experiment installed a high energy up to 1.5 GeV tagged and polarized photon beam at the ESRF (European Synchrotron Radiation Facility) in Grenoble. The beam is produced by backscattering a laser beam of the electron beam of the ESRF. This beam is used to study the photoproduction of mesons on liquid hydrogen target. From October 1996 until May 1997 data taking was performed to produce ? mesons on hydrogen from threshold to 1100 MeV. The extraction of beam asymmetry ? in ? photoproduction is in preparation for publication. The analysis of ?"0 and 2?"0 photoproduction is in progress and the cross sections of the three channels are under analysis. In September 1997, the tests of kaon photoproduction and detection is being started with photon beam of energy up to 1500 MeV. (authors)

1999-01-01

18

Rutherford Experiment  

CERN Multimedia

This experiment, carried out by Ernest Rutherford in 1910, revolutionised understanding of the structure of matter, showing that almost all the mass of an atom is concentrated in a very small, positively charged nucleus. Alpha particles emitted at bombard a thin gold foil. A detector records the number of alpha particles crossing the foil per second. The number is displayed on the counter and updated every minute. Alpha particles are helium nuclei, they consist of 2 protons and 2 neutrons. Rotate the central knob to change the angle between the foil and the detector. The number of alpha particles detected depends on the angle. Most of the alpha particles travel straight through the foil because the gold atoms are mainly empty space. However some hit the atomic nucleus and are deflected.

19

PWSCC experience  

International Nuclear Information System (INIS)

Examples of the types of problems being experienced in the industry regarding PWSCC of Alloy 600 in PWR primary water environments were addressed by six participants in Session 1. Summaries of the presentations are given below followed by the questions asked, responses provided, and comments made by the participants concerning each presentation. See Appendix A, Sections A1 through A6. for copies of the overhead transparencies applicable to the presentations. EPRI overview of PWSCC experience for alloy 600 in PWR service. This presentation was given by R. Pathania and A. McIlree, EPRI. The main points made in this presentation were as follows: Leaks have occurred in Alloy 600 pressurizer penetrations in five domestic plants, and leaks, or indications, have occurred in seven French plants. The leaks in the Alloy 600 penetrations have been attributed to primary water stress corrosion cracking (PWSCC). To date, no problems have been reported in stainless steel pressurizer penetrations even though some of these penetrations have been in operation longer than the Alloy 600 penetrations which have cracked. The PWSCC is caused primarily by: (1) high tensile stresses (residual plus applied), (2) high operating temperature, and (3) susceptible material. Testing of mockup samples is probably the best way to obtain the information required to develop predictive models to rank the PWSCC susceptibility of various penetrations

1992-07-01

20

Clustering experiments  

CERN Multimedia

It is well known that bees cluster together in cold weather, in the process of swarming (when the ``old'' queen leaves with part of the colony) or absconding (when the queen leaves with all the colony) and in defense against intruders such as wasps or hornets. In this paper we describe a fairly different clustering process which occurs at any temperature and independently of any special stimulus or circumstance. As a matter of fact, this process is about four times faster at 28 degree Celsius than at 15 degrees. Because of its simplicity and low level of ``noise'' we think that this phenomenon can provide a means for exploring the strength of inter-individual attraction between bees or other living organisms. For instance, and at first sight fairly surprisingly, our observations showed that this attraction does also exist between bees belonging to different colonies. As this study is aimed at providing a comparative perspective, we also describe a similar clustering experiment for red fire ants.

Wang, Zhengwei; Tan, Ken; Di, Zengru; Roehner, Bertrand M

2011-01-01

 
 
 
 
21

Particle physics experiments 1983  

International Nuclear Information System (INIS)

The report describes work carried out in 1983 on experiments approved by the Particle Physics Experiments Selection Panel. The contents consist of unedited contributions from each experiment. (author)

1983-01-01

22

Experience Management. The Fraunhofer IESE Experience Factory  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Experience Management (EM) is an area that is increasingly gaining importance. Its roots lie in Experimental Software Engineering ("Experience Factory"), in Artificial Intelligence ("Case-Based Reasoning"), and in Knowledge Management. EM is comprised of the dimensions methodology, technical realization, organization, and management. It includes technologies, methods, and tools for identifying, collecting, documenting, packaging, storing, generalizing, reusing, adapting, and evaluating experi...

Althoff, K. -d; Decker, B.; Hartkopf, S.; Jedlitschka, A.; Nick, M.; Rech, J.

2001-01-01

23

Glacier Goo Erosion Experiments  

Science.gov (United States)

Using a glacier proxy, students design an experiment to connect glacial erosion with glacial flow. Students choose from a variety of materials, determined what question they want their experiment or experiments to answer, design the procedure, test the experiment, and write up a lab report on the experiment.

Headley, Rachel

24

Experiment Dashboard for the LHC Experiments  

CERN Multimedia

The goal of the Grid is to provide a coherent access to distributed computing resources. All LHC experiments are using several Grid infrastructures and a variety of the middleware flavors. Due to the complexity and heterogeinity of a distributed system the monitoring represents a challenging task. Independently of the underlying platform , the experiments need to ave a complete and uniform picture of their activities on the Grid ideally seen by the users as a single powerful computing resource. Overall operation of the infrastructure used by experiments is defined both by the quality of the Grid and the quality of the tools and services developed/used by the experiments. Correspondingly the required monitoring information should combine both Grid-related and experiment/application specific data. On the other hand, users of the LHC experiments have various roles and need different levels of details regarding monitoring data. The paper will focus on the Grid monitoring from the experiment/user perspectives with...

Andreeva, Julia; Gaidioz, Benjamin; Herrala, Juha; Maier, Gerhild; Rocha, Ricardo; Saiz, Pablo; Sidorova, Irina; CERN. Geneva. IT Department

2007-01-01

25

Particle physics experiments 1987  

International Nuclear Information System (INIS)

This report describes work carried out in 1987 on experiments approved by the Particle Physics Experiments Selection Panel (United Kingdom). The contents consist of unedited contributions from each experiment. (author)

1988-01-01

26

Particle physics experiments 1986  

International Nuclear Information System (INIS)

The paper presents research work carried out in 1986 on 52 elementary particle experiments approved by the Particle Physics Experiments Selection Panel. Most of the experiments were collaborative and involved research groups from different countries. About half of the experiments were conducted at CERN, the remaining experiments employed the accelerators: LAMPT, LEP, PETRA, SLAC, and HERA. The contents consist of unedited contributions from each experiment. (U.K.)

1987-01-01

27

Particle physics experiments 1982  

International Nuclear Information System (INIS)

Work carried out in 1982 on 52 experiments approved by the Particle Physics Experiments Selection Panel is described. Each experiment is listed under title, collaboration, technique, accelerator, year of running, status and spokesman. Unedited contributions are given from each experiment. (U.K.)

1983-01-01

28

The User Experience  

Science.gov (United States)

User experience (UX) is about arranging the elements of a product or service to optimize how people will interact with it. In this article, the author talks about the importance of user experience and discusses the design of user experiences in libraries. He first looks at what UX is. Then he describes three kinds of user experience design: (1)…

Schmidt, Aaron

2010-01-01

29

Experiments in Electrochemistry  

Science.gov (United States)

Provided by the Fun Science Gallery, Experiments in Electrochemistry offers both teachers and students documentation for seven simple experiments to investigate conductors, batteries, potentials, and galvanic deposition. Each experiment is accompanied by a list of materials, explanatory text, and at least one figure that facilitates a scientific understanding of the experiment.

Carboni, Giorgio.

1998-01-01

30

Lithium battery space experiment  

Energy Technology Data Exchange (ETDEWEB)

The In-Space Technology Experiments Program selected the Jet Propulsion Laboratory to conduct a Phase A study of the Lithium Battery Experiment. The experiment will mark the first time a rechargeable lithium battery will be flown in space. The operation of the battery involves lithium deposition and dissolution processes. Micro gravity influences these processes significantly. The experiment will check the rate capability, discharge voltage, capacity and the phenomena affecting cycle life. The paper describes the design and methodology of this experiment.

Chmlelewski, A.B.; Surampudi, S.; Bennett, R.; Frank, H.; Mueller, R. [Jet Propulsion Lab., Pasadena, CA (United States)

1995-12-31

31

Framework of product experience:  

Digital Repository Infrastructure Vision for European Research (DRIVER)

In this paper, we introduce a general framework for product experience that applies to all affective responses that can be experienced in human-product interaction. Three distinct components or levels of product experiences are discussed: aesthetic experience, experience of meaning, and emotional experience. All three components are distinguished in having their own lawful underlying process. The aesthetic level involves a product’s capacity to delight one or more of our sensory modalities....

Desmet, P.; Hekkert, P.

2007-01-01

32

Popper's Thought Experiment Reinvestigated  

CERN Document Server

Popper's original thought experiment probed some fundamental and subtle rules of quantum mechanics. Two recent experiments have tested Popper's hypothesis, but they seem to give contrasting results and one suggests a violation of Heisenberg's uncertainty principle. The equations governing these two experiments and Popper's thought experiment will be derived from basic principles. The experimental constants will be inputted and it will show that the two experiments agree with each other. It will be shown that no uncertainty relations are violated and that Popper's thought experiment was fundamentally flawed.

Richardson, Chris D

2011-01-01

33

Experiment WA1 (CDHS Neutrino Experiment)  

CERN Multimedia

Experiment WA1, also known under CDHS (CERN, Dortmund, Heidelberg, Saclay; spokesman Jack Steinberger), was the first neutrino experiment on the SPS, in its West Area. Magnetized iron (with a toroidal field) forms the core of the detector. On its outside we see drift chambers and photomultipliers (detecting the light from the plastic scintillators further in). Peter Schilly is wearing a white coat. See also CERN Annual Report 1976, p.57.

1977-01-01

34

Real Life Experiences with Experience Design  

DEFF Research Database (Denmark)

Experience Design is an emergent field of study, and various approaches to the field abound. In this paper, we take a pragmatic approach to identifying key aspects of an experience design process, by reporting on a project involving the design of experience-oriented applications of interactive technologies for knowledge dissemination and marketing, in cooperation with public institutions and businesses. We argue that collaborative formulation of core design intentions and values is a valuable instrument in guiding experience design processes, and present three cases from this project, two of which resulted in interactive installations. The case installations range from walk-up-and-use consoles, to immersive, responsive, environments based on bodily interaction. We compare the installations, and discuss the interrelations between the resulting interfaces and the intentions for creating the installations, the core values established to guide the design process and the intended use contexts. We argue that the installations present a broad spectrum of experience design installations that can assist designers in understanding the relations between core values, intentions, use context and interface in the design of experience-oriented interactive installations.

Dalsgård, Peter; Halskov, Kim

2006-01-01

35

The AMS experiment  

CERN Document Server

The Alpha Magnetic Spectrometer (AMS) detector will be installed as a particle physics experiment on the International Space Station. It will look for antimatter pockets in space. AMS is a CERN recognised experiment.

Laurent Guiraud

1999-01-01

36

Particle physics experiments 1984  

International Nuclear Information System (INIS)

The Rutherford Appleton laboratory report describes work carried out in 1984 on experiments approved by the Particle Physics selection panel. The contents consist of unedited contributions from each experiment. (author)

1985-01-01

37

A theory of experiment  

CERN Multimedia

An algebraic and computational theory of scientific experiment is proposed, identifying observability and calculability. Experiment is a quest for information, in steps of perturbation, interpretation and instrumentation. Logical and quantitative errors are pointed out.

Albarede, P

2002-01-01

38

SILEX Experiment System Operations.  

Science.gov (United States)

The European Space Agency is going to conduct an inter orbit link experiment which will connect a low Earth orbiting satellite and a Geostationary satellite via optical terminals. This experiment has been called SILEX (Semiconductor Inter satellite Link E...

B. Demelenne

1994-01-01

39

Digital Wave Processing Experiment.  

Science.gov (United States)

A wide variety of geophysical plasmas will be investigated by the Cluster mission. The digital wave processing (DWP) experiment implements the four ESA/NASA Cluster satellites as a component of the wave experiment consortium. The processing system within ...

L. J. C. Woolliscroft J. A. Thompson P. M. E. Decreau M. Parrot A. Egeland

1988-01-01

40

Double beta decay experiments  

CERN Multimedia

The present status of double beta decay experiments is reviewed. The results of the most sensitive experiments are discussed. Proposals for future double beta decay experiments with a sensitivity to the $$ at the level of (0.01--0.1) eV are considered.

Barabash, A S

2011-01-01

 
 
 
 
41

COMPASS experiment and computers  

International Nuclear Information System (INIS)

The paper, dealing with the COMPASS (COmmon Muon and Proton Apparatus for Structure and Spectroscopy) experiment, is structured as follows: COMPASS experiment (preparation, run); Data acquisition (data acquisition architecture, data storage, data organization, CDR and CASTOR, COOOL, data processing, data production mechanism), System performance overview; and Experience from practical operation. (P.A.)

2005-09-01

42

Particle physics experiments 1988  

International Nuclear Information System (INIS)

This report describes work carried out in 1988 on experiments approved by the Particle Physics Experiments Selection Panel. The contents consist of unedited contributions from each experiment. More than forty projects at different accelerators (SPS, ISIS, PETRA, LAMPF, LEP, HERA, BNL, ILL, LEAR) are listed. Different organisations collaborate on different projects. A brief progress report is given. References to published articles are given. (author)

1989-01-01

43

The Athena experiment  

Energy Technology Data Exchange (ETDEWEB)

The goal of the ATHENA experiment is the production and study of anti-hydrogen. All components of the experiment are now installed and functional, and first data have been taken. The characteristics of the experiment, as well as its first results, will be presented. (author)

Doser, M. [CERN-Conseil Europeen pour la recherche nucleaire, EP, Geneve (Switzerland)

2002-07-01

44

The Athena experiment  

International Nuclear Information System (INIS)

The goal of the ATHENA experiment is the production and study of anti-hydrogen. All components of the experiment are now installed and functional, and first data have been taken. The characteristics of the experiment, as well as its first results, will be presented. (author)

2002-06-16

45

Results from hadroproduction experiments  

CERN Multimedia

The hadroproduction experiments HARP, MIPP and NA61 (SHINE) as well as their implications for neutrino physics are discussed. HARP measurements have already been used for precise predictions of neutrino beams in K2K and MiniBooNE/SciBooNE experiments and are also being used to improve the atmospheric neutrino flux predictions and to help in the optimization of neutrino factory and super-beam designs. The MIPP experiment has nearly finalized measurements of hadron production from the NuMI target used in the MINOS experiment. First measurements released recently by the NA61 (SHINE) experiment are of significant importance for a precise prediction of the J-PARC neutrino beam used for the first stage of the T2K experiment. All three experiments - HARP, MIPP and NA61 - provide also a large amount of input for validation and tuning of hadron production models in Monte-Carlo generators.

Popov, Boris A

2011-01-01

46

Neutrino experiments; Experiences sur les neutrinos  

Energy Technology Data Exchange (ETDEWEB)

After participating in a several experiments near the reactor at Bugey, at distances from 15 to 100 m from the reactor the laboratory joined a collaboration for search of effect of neutrino oscillations at longer distances (1 km) from the neutrinos` point of origin. The zone covered by this experiment raises a particular interest because the results of several underground experiments on the atmospheric neutrinos indicated that oscillation could appear in this zone. The Chooz collaboration, reported here, joined three American universities (Philadelphia, New Mexico and Irvine), two Italian universities (Pisa and Trieste), the Kurchatov Institute in Moscow and two French laboratories (the LAPP in Annecy and the College de France). The first data have been recorded during the autumn of 1996 prior to the commissioning of the reactors (2 x 4200 MW{sub th}), to measure the background noise. The detector is a target of 6 t liquid scintillator doped with Gd, sunk in 120 t non-doped liquid scintillator separated by thin transparent wall. The target is viewed by 192 photomultipliers. The scintillator liquids are carried up to the detector and then to the exterior tanks by a tunnel of 200 m length and a height gradient of 15 m. The fragility of the detector imposes a simultaneous filling of its components, with an accuracy of the order of 1 cm. A 200 MHz sampling system of the photomultiplier pulses signing the neutrino interaction was developed in order to obtain simultaneously information on the pulse-height, timing and shape. This experiment could serve as a prototype for heavier experiments conceived in US, in Russia at Rovno and Krasnoyarsk, and in France, at 15 km from the Perry reactor, at 500 m underground. Still more ambitious is the Japan project at Kamioka, at 160 m distance from a nuclear reactor. The experiment at Perry will push the electron neutrino upper mass estimates down to 0.01 eV

Kerret, H. de; Kryn, D.; Lefievre, B.; Obolensky, M.; Veron, D.; Vyrodov, V. [Lab. de Physique Corpusculaire et Cosmologie, College de France, 75 - Paris (France)

1997-12-31

47

Experimenting with Infrastructures  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Laboratory environments for experimenting on infrastructures are often challenging both technically, politically and economically. The situation is further complicated when the interaction between infrastructures is in focus rather than the behaviours of a singular one. Since ICT often has a key role in experiment management, data gathering and experiment upkeep - controlled experimentation becomes even more difficult when some of the interactions studied are between ICT and another infrastru...

Sta?hl, Bjo?rn; Caire, Raphael; Thany, Luc; Gustavsson, Rune

2010-01-01

48

GAMS experiment at CERN  

International Nuclear Information System (INIS)

GAMS experiment, which studies meson resonances and non-qq-bar states decaying to neutral states is now in progress in the reaction pp ? ppM0 with 450 GeV/c proton beam. The experiment is scheduled to collect data untill September in 1992. I would like to introduce the motivation, the experimental set up, the feature of collected data and the schedule of the experiment. (author)

1992-09-01

49

MWX stimulation experiments  

Energy Technology Data Exchange (ETDEWEB)

No stimulations have been conducted at the Multi-Well Experiment site through the end of Fiscal Year 1983. Nevertheless, efforts have been made to define the zones of interest, objectives, and methodology for the series of stimulation experiments which will be conducted beginning in Fiscal Year 1984. The first stimulation experiment will be conducted in the paludal interval in the Mesaverde Group. A request for proposal (RFP) for service company participation has been prepared. 3 figures.

Northrop, D.A.

1983-01-01

50

The POLARBEAR Experiment  

Digital Repository Infrastructure Vision for European Research (DRIVER)

We present the design and characterization of the POLARBEAR experiment. POLARBEAR will measure the polarization of the cosmic microwave background (CMB) on angular scales ranging from the experiment's 3.5 arcminute beam size to several degrees. The experiment utilizes a unique focal plane of 1,274 antenna-coupled, polarization sensitive TES bolometers cooled to 250 milliKelvin. Employing this focal plane along with stringent control over systematic errors, POLARBEAR has the ...

Kermish, Z.; Ade, P.; Anthony, A.; Arnold, K.; Barron, D.; Boettger, D.; Borrill, J.; Chapman, S.; Chinone, Y.; Dobbs, M. A.; Errard, J.; Fabbian, G.; Flanigan, D.; Fuller, G.; Ghribi, A.

2012-01-01

51

Fusion ignition experiment (IGNITEX)  

International Nuclear Information System (INIS)

The crucial next step in fusion research is to produce and control thermonuclear ignited plasmas. An experiment with this objective is considered here. The IGNITEX device is a compact high-field single-turn-coil tokamak capable of reaching and controlling fusion ignition with ohmic heating alone. The cost of construction of this experiment is estimated to be relatively low

1987-10-12

52

Neutrino oscillation experiments  

Energy Technology Data Exchange (ETDEWEB)

Neutrino oscillation experiments ({nu}{sub {mu}}{yields}{nu}{sub e} and {nu}{sub {mu}}{yields}{nu}{sub {tau}}) currently being performed at accelerators are reviewed. Future plans for short and long base-line experiments are summarized. (author) 10 figs., 2 tabs., 29 refs.

Camilleri, L. [European Organization for Nuclear Research, Geneva (Switzerland)

1996-11-01

53

Experiment in Structural Learning.  

Science.gov (United States)

The concern of the experiment is to find out the roles of abstraction and generalization in the learning of mathematical structures. The basic question is whether to generalize before abstracting or vice-versa in order to maximize transfer. The experiment involves four mathematical tasks and a transfer of activity. Experimental procedures are…

Diener, Z. P.

54

Aeroassist Flight Experiment (AFE)  

Science.gov (United States)

Information is given in viewgraph form on the Aeroassist Flight Experiment (AFE), an experiment with the objective of investigating critical vehicle design and environmental technologies applicable to the design of aeroassisted space transfer vehicles. Information is given on design, simulation, flight regime, mission requirements and objectives, instrumentation, and the project schedule.

Siemers, Paul M., III

1988-01-01

55

Particle physics experiments 1992  

International Nuclear Information System (INIS)

The research programs described here were carried out in 1992 at Rutherford Appleton Laboratory and funded by the United Kingdom Science and Engineering Research Council. The area covered in these experiments is particle physics. Unedited contributions from over forty experimental programs are included. Experiments are listed according to their current status, the accelerator used and its years of operation. (UK)

1993-01-01

56

Experience with MODSIM II  

International Nuclear Information System (INIS)

We present results of computer simulations for Data Acquisition systems for large fixed target experiments in an object oriented simulation language, MODSIM. This paper summarizes our experiences and presents preliminary results from the simulation already completed. We also indicate the resources required for this project

1992-01-13

57

Realisation, experience, and purification  

DEFF Research Database (Denmark)

Often Buddhist mantra practises are portrayed as making and maintaining meditation experiences. Jigten Sumgön explains in his dGongs gcig (5.19) that such a 'making and maintaining' is only a mental fabrication and needs to be purified. Realisation does not arise from experience, but from purification, he says.

Sobisch, Jan-Ulrich

58

Outlook for PWA Experiments  

CERN Document Server

An outlook is given on proton-driven plasma wakefield experiments KET Strategy Workshop, Dortmund, 25-26 October 2010, focusing on two themes: 1) community interest and potential, and 2) a first demonstration experiment for proton-driven plasma wakefield acceleration (PDPWA) at CERN.

Zimmermann, F

2010-01-01

59

Boyle's Law Experiment.  

Science.gov (United States)

Suggests that ideal experiments fit into course time constraints and be meaningful, relevant to course content, safe, inexpensive, simple, reproducible, and easy to set up/maintain. Describes a Boyle's Law experiment that uses a minimum of equipment and meets the foregoing criteria. Apparatus used, procedures, and safety precautions are…

Hermens, Richard A.

1983-01-01

60

Experience with MODSIM II  

Energy Technology Data Exchange (ETDEWEB)

We present results of computer simulations for Data Acquisition systems for large fixed target experiments in an object oriented simulation language, MODSIM. This paper summarizes our experiences and presents preliminary results from the simulation already completed. We also indicate the resources required for this project.

Streets, J.; Berg, D.; Oleynik, G.; Pordes, R.; Slimmer, D.

1992-02-01

 
 
 
 
61

Numerical Memory Experiment  

Science.gov (United States)

This is the entry page for the Numerical Memory Experiment. This Numerical Memory experiment employs a similar format to Digit Span tasks found in assessment instruments, comparing the individual's short-term memory for digits presented in an auditory vs. visual format.

62

Earthquake Effects and Experiences  

Science.gov (United States)

This portion of the United States Geological Survey's (USGS) frequently-asked-questions feature on earthquakes addresses what individuals might actually experience during an earthquake. Topics include earthquake motion (rolling or shaking), earthquake effects (ground shaking, surface faulting, ground failure, etc.), earthquake magnitude, what an earthquake feels like, and others. There are also links to additional resources on earthquake effects and experiences.

2010-11-23

63

Filter target experiment (FILTEX)  

International Nuclear Information System (INIS)

This experiment has been proposed in order to polarize antiprotons circulating in a storage ring by means of an internal polarized hydrogen target and to measure spin-dependent observables in panti p interaction. A dense H target for the proton test experiment prepared for the TSR is being constructed. The status of the target is described. (orig.)

1988-01-01

64

Marine ecosystem enclosed experiments  

Energy Technology Data Exchange (ETDEWEB)

A symposium on marine ecosystem enclosed experiments presented nine review papers describing various types of ecosystem enclosures and a series of papers resulting from enclosure experiments in Xiamen, China and Saanich Inlet, British Columbia. The reviews on types of enclosures include benthic enclosures for rocky and sandy shores, and the effects of pollutants (primarily hydrocarbons) on bacteria, algae, and invertebrates. The pelagic enclosures were used to study the control of phytoplankton blooms, the uptake and release of dissolved organic substances, and the effects of pesticides on freshwater ecosystems. Six enclosure experiments were conducted in China and Canada from 1986 to 1987. Some of these experiments examined the effects of contaminated sediments, primarily heavy metals, on phytoplankton, bacteria, and zooplankton and the pathways and fates of these heavy metals in the seawater. Other experiments studied the chemistry and biological effects of chemically dispersed oil. Separate abstracts have been prepared for 15 papers from this symposium.

Wong, C.S.; Harrison, P.J. (eds.)

1987-01-01

65

Radiochemical solar neutrino experiments  

International Nuclear Information System (INIS)

This review covers the three presently running radiochemical solar neutrino experiments, namely the Chlorine, SAGE, and GALLEX experiments. The focus of the review is on a discussion of statistical consistency checks of the available data. The chlorine radiochemical experiment is conceptually simple and shows no strong indication of any statistical anomalies. It still forms the basis of the solar neutrino problem. Each of the two gallium experiments show internal statistical consistency. SAGE's recent preliminary results are consistent with the published GALLEX results. If this convergence is confirmed by a more definitive analysis, this would suggest that the combined result of the two gallium experiments, SAGE and GALLEX, be used for comparisons with theoretical expectations. 5 refs., 15 figs

1992-12-13

66

Hadron production experiments  

CERN Document Server

The HARP and NA61/SHINE hadroproduction experiments as well as their implications for neutrino physics are discussed. HARP measurements have already been used for predictions of neutrino beams in K2K and Mini-BooNE/SciBooNE experiments and are also being used to improve the atmospheric neutrino flux predictions and to help in the optimization of neutrino factory and super-beam designs. First measurements released recently by the NA61/SHINE experiment are of significant importance for a precise prediction of the J-PARC neutrino beam used for the T2K experiment. Both HARP and NA61/SHINE experiments provide also a large amount of input for validation and tuning of hadron production models in Monte-Carlo generators.

Popov, Boris A

2012-01-01

67

Cryogenics for LHC experiments  

CERN Multimedia

Cryogenic systems will be used by LHC experiments to maximize their performance. Institutes around the world are collaborating with CERN in the construction of these very low temperature systems. The cryogenic test facility in hall 180 for ATLAS magnets. High Energy Physics experiments have frequently adopted cryogenic versions of their apparatus to achieve optimal performance, and those for the LHC will be no exception. The two largest experiments for CERN's new flagship accelerator, ATLAS and CMS, will both use large superconducting magnets operated at 4.5 Kelvin - almost 270 degrees below the freezing point of water. ATLAS also includes calorimeters filled with liquid argon at 87 Kelvin. For the magnets, the choice of a cryogenic version was dictated by a combination economy and transparency to emerging particles. For the calorimeters, liquid argon was selected as the fluid best suited to the experiment's physics requirements. High Energy Physics experiments are the result of worldwide collaborations and...

2001-01-01

68

The Penning Fusion Experiment  

Science.gov (United States)

As part of the innovative conefinement concepts initiative, a series of experiments is being conducted at Los Alamos to determine the suitability of Penning traps as fusion confinement devices. Early experiments concentrated on achieving enhanced densities by inducing spherical flow in a nonthermal, nonneutral plasma confined in a traditional Penning trap. The present experiment seeks to overcome the limitations of this method by forming a well for positive ions from the space charge of a uniform cloud of electrons confined in a modified Penning trap. The radial well thus provided will allow spherical flow in a multi-species, nonthermal plasma. We will briefly review results from the initial experiments and discuss the design of the present experiment. Progress to date will be discussed.

Schauer, Martin; Umstadter, Karl; Barnes, Daniel; Mitchell, Travis

1998-11-01

69

Molybdenum solar neutrino experiment  

International Nuclear Information System (INIS)

The goal of the molybdenum solar neutrino experiment is to deduce the 8B solar neutrino flux, averaged over the past several million years, from the concentration of 98Tc in a deeply buried molybdenum deposit. The experiment is important to an understanding of stellar processes because it will shed light on the reason for the discrepancy between theory and observation of the chlorine solar neutrino experiment. Possible reasons for the discrepancy may lie in the properties of neutrinos (neutrino oscillations or massive neutrinos) or in deficiencies of the standard solar model. The chlorine experiment only measures the 8B neutrino flux in current times and does not address possible temporal variations in the interior of the sun, which are also not considered in the standard model. In the molybdenum experiment, we plan to measure 98Tc (4.2 Myr), also produced by 8B neutrinos, and possibly 97Tc (2.6 Myr), produced by lower energy neutrinos

1984-08-23

70

Simulation - modeling - experiment; Simulation - modelisation - experience  

Energy Technology Data Exchange (ETDEWEB)

After two workshops held in 2001 on the same topics, and in order to make a status of the advances in the domain of simulation and measurements, the main goals proposed for this workshop are: the presentation of the state-of-the-art of tools, methods and experiments in the domains of interest of the Gedepeon research group, the exchange of information about the possibilities of use of computer codes and facilities, about the understanding of physical and chemical phenomena, and about development and experiment needs. This document gathers 18 presentations (slides) among the 19 given at this workshop and dealing with: the deterministic and stochastic codes in reactor physics (Rimpault G.); MURE: an evolution code coupled with MCNP (Meplan O.); neutronic calculation of future reactors at EdF (Lecarpentier D.); advance status of the MCNP/TRIO-U neutronic/thermal-hydraulics coupling (Nuttin A.); the FLICA4/TRIPOLI4 thermal-hydraulics/neutronics coupling (Aniel S.); methods of disturbances and sensitivity analysis of nuclear data in reactor physics, application to VENUS-2 experimental reactor (Bidaud A.); modeling for the reliability improvement of an ADS accelerator (Biarotte J.L.); residual gas compensation of the space charge of intense beams (Ben Ismail A.); experimental determination and numerical modeling of phase equilibrium diagrams of interest in nuclear applications (Gachon J.C.); modeling of irradiation effects (Barbu A.); elastic limit and irradiation damage in Fe-Cr alloys: simulation and experiment (Pontikis V.); experimental measurements of spallation residues, comparison with Monte-Carlo simulation codes (Fallot M.); the spallation target-reactor coupling (Rimpault G.); tools and data (Grouiller J.P.); models in high energy transport codes: status and perspective (Leray S.); other ways of investigation for spallation (Audoin L.); neutrons and light particles production at intermediate energies (20-200 MeV) with iron, lead and uranium targets (Le Colley F.R.); nuclear data for transmutation (Noguere G.). (J.S.)

NONE

2004-07-01

71

Radiochemical solar neutrino experiments  

Energy Technology Data Exchange (ETDEWEB)

Radiochemical experiments have been crucial to solar neutrino research. Even today, they provide the only direct measurement of the rate of the proton-proton fusion reaction, p+p{yields}d+e{sup +}+{nu}{sub e}, which generates most of the Sun's energy. We first give a little history of radiochemical solar neutrino experiments with emphasis on the gallium experiment SAGE - the only currently operating detector of this type. The combined result of all data from the Ga experiments is a capture rate of 67.6{+-}3.7 SNU. For comparison to theory, we use the calculated flux at the Sun from a standard solar model, take into account neutrino propagation from the Sun to the Earth and the results of neutrino source experiments with Ga, and obtain 67.3{sub -3.5}{sup +3.9} SNU. Using the data from all solar neutrino experiments we calculate an electron neutrino pp flux of {phi}{sub pp}{sup Earth }=(3.41{sub -0.77}{sup +0.76}) Multiplication-Sign 10{sup 10}/(cm{sup 2}-s), which agrees well with the prediction from a detailed solar model of {phi}{sub pp}{sup Earth }=(3.30{sub -0.14}{sup +0.13}) Multiplication-Sign 10{sup 10}/(cm{sup 2}-s). Four tests of the Ga experiments have been carried out with very intense reactor-produced neutrino sources and the ratio of observed to calculated rates is 0.88{+-}0.05. One explanation for this unexpectedly low result is that the cross section for neutrino capture by the two lowest-lying excited states in {sup 71}Ge has been overestimated. We end with consideration of possible time variation in the Ga experiments and an enumeration of other possible radiochemical experiments that might have been.

Gavrin, V.N., E-mail: gavrin@dionis.iasnet.ru [Institute for Nuclear Research of the Russian Academy of Sciences, Moscow 117312 (Russian Federation); Cleveland, B.T., E-mail: bclevela@snolab.ca [Department of Physics, University of Washington, Seattle Washington 98195 (United States)

2011-12-15

72

Radiochemical solar neutrino experiments  

Science.gov (United States)

Radiochemical experiments have been crucial to solar neutrino research. Even today, they provide the only direct measurement of the rate of the proton-proton fusion reaction, p+p?d+e++?e, which generates most of the Sun's energy. We first give a little history of radiochemical solar neutrino experiments with emphasis on the gallium experiment SAGE - the only currently operating detector of this type. The combined result of all data from the Ga experiments is a capture rate of 67.6±3.7 SNU. For comparison to theory, we use the calculated flux at the Sun from a standard solar model, take into account neutrino propagation from the Sun to the Earth and the results of neutrino source experiments with Ga, and obtain 67.3-3.5+3.9 SNU. Using the data from all solar neutrino experiments we calculate an electron neutrino pp flux of ?pp?=(3.41-0.77+0.76)×1010/(cm-s), which agrees well with the prediction from a detailed solar model of ?pp?=(3.30-0.14+0.13)×1010/(cm-s). Four tests of the Ga experiments have been carried out with very intense reactor-produced neutrino sources and the ratio of observed to calculated rates is 0.88±0.05. One explanation for this unexpectedly low result is that the cross section for neutrino capture by the two lowest-lying excited states in 71Ge has been overestimated. We end with consideration of possible time variation in the Ga experiments and an enumeration of other possible radiochemical experiments that might have been.

Gavrin, V. N.; Cleveland, B. T.

2011-12-01

73

Crystal box experiments  

International Nuclear Information System (INIS)

The aim of these experiments is to search for several rare-decay modes of the muon and the pion and to study these decay modes should they be observed. In Exps. 400/445, the muon-number-nonconserving decays ?+?e+e+e-, ?+?e+?, and ?+?e+?? are being sought with a sensitivity to branching ratios of about 10-11 relative to ordinary muon decay. Experiment 726 will search for the charge-conjugation-violating decay ?0?3? with a sensitivity to a branching ratio as small as 10-9 relative to ordinary ?0 decay. Experiment 888 is a study of radiative pion decay ?+?e+nu/sub e/?

1985-04-01

74

CANDU operating experience  

International Nuclear Information System (INIS)

The CANDU-PHW program is based upon 38 years of heavy water reactor experience with 35 years of operating experience. Canada has had 72 reactor years of nuclear-electric operations experience with 10 nuclear units in 4 generating stations during a period of 18 years. All objectives have been met with outstanding performance: worker safety, public safety, environmental emissions, reliable electricity production, and low electricity cost. The achievement has been realized through total teamwork involving all scientific disciplines and all project functions (research, design, manufacturing, construction, and operation). (auth)

1980-01-01

75

ROCSAT-1 telecommunication experiments  

Science.gov (United States)

This paper addresses a telecommunication payload project approved by the R.O.C. NSPO's ROCSAT-1 space program. This project will enable several innovative experiments via the low-earth-orbit satellite ROCSAT-1, including multipath fading channel characterization, ionospheric scintillation measurement, real-time voice communications, and CDMA data communications. A unified L/S-band transponder payload is proposed for conducting these experiments in an efficient way. The results of these experiments would provide the evolving mobile communication communities with fruitful information.

Chang, J. F.; Taur, R. R.; Chu, T. H.; Li, H. S.; Su, Y. T.; Kiang, Y. W.; Su, S. L.; Shih, M. P.; Lin, H. D.; Chung, C. D.

1993-01-01

76

Spent fuel integral experiments  

International Nuclear Information System (INIS)

A series of parallel spent fuel integral experiments are underway at Battelle-Columbus. These experiments are operational in the Battelle hot cell facility and are designed to provide information on effects of cladding degradation on the release of radionuclides from spent fuel waste forms and on combined effects interactions between spent fuel waste forms, the waste package, and the surrounding repository environment. To accomplish these objectives, the integral experiments have been designed the emulate characteristics of repository environments for spent fuel materials in deep-mined repositories in tuff, basalt, and granite media

1986-01-01

77

Results from neutrino experiments  

International Nuclear Information System (INIS)

Recent (first or/and the best) results from the neutrino experiments are reviewed and their implications for the theory are discussed. The sense of the experiments is the searching for neutrino masses, mixing and interactions beyond the standard model. Present laboratory experiments give upper bounds on the masses and the mixing which are at the level of predictions of the ''electroweak see-saw''. Positive indications of nonzero lepton mixing follow from studies of the solar and atmospheric neutrinos. (author). 95 refs, 11 figs

1993-01-01

78

Recent experiments at LEGS  

Energy Technology Data Exchange (ETDEWEB)

Experiments have been carried out at LEGS to measure few-body nuclear reactions with polarized photons. The results are sensitive to multi-nucleon absorption amplitudes and final-state interactions. (author).

Adams, G.S. [Rensselaer Polytechnic Inst., Troy, NY (United States). Dept. of Physics; Baghaei, H.; Caracappa, A. [and others

1994-12-01

79

Recent experiments at LEGS  

International Nuclear Information System (INIS)

Experiments have been carried out at LEGS to measure few-body nuclear reactions with polarized photons. The results are sensitive to multi-nucleon absorption amplitudes and final-state interactions. (author)

1994-12-01

80

Zero-Gravity Experiment  

International Science & Technology Center (ISTC)

Research to Provide Creation of Recoverable Vehicle with Scientific and Technological Equipment Weight Increased to 400kg for Conducting Zero-Gravity Experiments by Submarine-Launches of the "Volna" Rocket

 
 
 
 
81

The Double Chooz Experiment  

International Nuclear Information System (INIS)

The measurement of the last undetermined neutrino mixing angle ?13 is the main goal of the next generation of neutrino oscillation experiments. The present limit is dominated by the result of the Chooz experiment, which gives sin2 2 ?13 ? 0.10-0.15 (depending on the true value of ?m213), at 90% confidence level. Double Chooz is a next generation reactor experiment aiming at exploring ? 80% of the currently allowed parameter region, with a new detector at the Chooz site. The aimed sensitivity requires both the statistical and systematical errors to be significantly reduced with respect to past reactor experiments. In particular, the success of the project depends on the reduction of the systematics, made possible by the installation of a near identical detector and by the improvement of the detector design. The experimental concept and the status of Double Chooz are reviewed. Some of the accomplishments of the project RandD will be shortly discussed. (author)

2006-07-01

82

The Double Chooz Experiment  

International Nuclear Information System (INIS)

The Double Chooz reactor neutrino experiment aims at observing the last neutrino oscillation not yet observed and at measuring the corresponding mixing angle ?13. A relatively big value of this angle will allow the measurement of CP violation in the leptonic sector by the next neutrino oscillation experiments. This disappearance experiment will precisely count the number of anti-neutrinos produced by the two nuclear reactors of the Chooz nuclear plant in France. In a first stage, Double Chooz will only use a far detector which could allow to give a sin2(2?13) low limit of 0.06. Two years after, a near detector, identical to the far one, will be in operation and allow us to push this limit down to 0.03 by reducing the systematic errors. The status of this experiment is presented in this paper.

2011-10-06

83

Spectroscopy experiments at ELSA  

International Nuclear Information System (INIS)

The spectroscopy of baryon resonances especially with high masses allows new insight into the properties of hadronic matter and to study the question of the relevant degrees of freedom in the region of non-perturbative QCD. The electron accelerator ELSA at Bonn provides electrons with energies up to 3.2 GeV which are used to produce unpolarized and polarized bremsstrahlung photons with energies up to 3.0 GeV for photoproduction experiments off the nucleon. The results of the 1997 and 1998 runs of the SAPHIR experiment are discussed. Preliminary results from the runs in 2000 and 2001 of the Crystal Barrel experiment at ELSA on single and double neutral meson production are presented. From the high statistics 2003 data of the Crystal Barrel-TAPS experiment asymmetries obtained with linearly polarized photons for the channel ?-vectorp ? p??0 are shown

2004-08-30

84

General relativity and experiment  

CERN Multimedia

The confrontation between Einstein's theory of gravitation and experiment is summarized. Although all current experimental data are compatible with general relativity, the importance of pursuing the quest for possible deviations from Einstein's theory is emphasized.

Damour, Thibault Marie Alban Guillaume

1994-01-01

85

Quests for PANDA experiment  

International Nuclear Information System (INIS)

The physics program of the PANDA experiment at FAIR, studying antiproton interaction with protons and nuclei at intermediate energies, is briefly outlined. Some selected points. of the program are discussed in more details

2011-09-03

86

The CBM experiment  

International Nuclear Information System (INIS)

Full text: The CBM experiment at FAIR prepares for exploring the QCD phase diagram at high net baryon densities. Physics objectives, detector R and D and detailed simulation studies will be presented in this contribution. (author)

2009-01-18

87

Future neutrino experiments  

International Nuclear Information System (INIS)

Future experiments to search for neutrino oscillations using neutrinos from the Sun, from reactors and accelerators are reviewed. Possible long-term developments based on neutrino factories are also described

2001-04-01

88

Notes on Experiments.  

Science.gov (United States)

Explains how to demonstrate the following: the hysteresis effect and the existence of domains in Rochelle salt (sodium potassium tartrate); diffraction experiments using a slide with multiple slits; and an analogue technique for learning terminal velocity. (GA)

Physics Education, 1979

1979-01-01

89

Experiments in Animal Behavior  

Science.gov (United States)

Describes experiments in conditioning, sensory processes, social behavior, imprinting, innate preferences for color and form, and discrimination learning suitable for secondary school students. Mealworms, crickets, and chicks are used as subjects. (AL)

Polt, James M.

1971-01-01

90

German and French experiences  

International Nuclear Information System (INIS)

In this lecture author presents experience in-service inspection programme of primary circuit components at home and abroad, implementation into WWER (world methodology and equipment) as well as system qualification. Objectives European network for inspection qualification (ENIQ) are presented

1999-09-10

91

The MAJORANA Experiment  

International Nuclear Information System (INIS)

The Majorana collaboration is actively pursuing research and development aimed at a tonne-scale 76Ge neutrinoless double-beta decay (??(0?)-decay) experiment. The current, primary focus is the construction of the Majorana Demonstrator experiment, an R and D effort that will field approximately 40 kg of germanium detectors with mixed enrichment levels. This article provides a status update on the construction of the Demonstrator.

2011-06-13

92

KamLAND experiment  

International Nuclear Information System (INIS)

A low-energy and low-background neutrino experiment, 'KamLAND' started data acquisition in January 2002, to search for a long base-line neutrino oscillation using the nuclear reactors as sources. With good detector performance very close to the design values, the data analysis is progressing rapidly, in order to test the LMA solution of the solar neutrino problem, by an experiment with artificial sources for the first time

2003-04-01

93

Tokamak experiments - summary  

International Nuclear Information System (INIS)

One hundred and thirty papers were presented at this Conference from more than thirty tokamak machines, among which two(JET,TFTR) were operated with DT fuels and three(Tore Supra, TRIAM-1M0, HT-7)) employed superconductor toroidal coils. Extensive progress was made in tokamak performance and understanding of tokamak plasmas have been improved significantly on these experiments during last two years after 16th Fusion energy Conference. The review of new experiments on tokamak plasma physics is done

2001-05-01

94

The MAJORANA Experiment  

Energy Technology Data Exchange (ETDEWEB)

The Majorana collaboration is actively pursuing research and development aimed at a tonne-scale {sup 76}Ge neutrinoless double-beta decay ({beta}{beta}(0{nu})-decay) experiment. The current, primary focus is the construction of the Majorana Demonstrator experiment, an R and D effort that will field approximately 40 kg of germanium detectors with mixed enrichment levels. This article provides a status update on the construction of the Demonstrator.

Aguayo Navarrete, Estanislao; Avignone, F. T.; Back, Henning O.; Barabash, Alexander S.; Bergevin, M.; Bertrand, F.; Boswell, M.; Brudanin, V.; Busch, Matthew; Chan, Yuen-Dat; Christofferson, Cabot-Ann; Collar, J. I.; Combs, Dustin C.; Cooper, R. J.; Detwiler, Jason A.; Doe, Peter J.; Efremenko, Yuri; Egorov, Viatcheslav; Ejiri, H.; Elliott, Steven R.; Esterline, James H.; Fast, James E.; Fields, N.; Finnerty, P.; Fraenkle, Florian; Gehman, Victor M.; Giovanetti, G. K.; Green, Matthew P.; Guiseppe, Vincente; Gusey, K.; Hallin, A. L.; Hazama, R.; Henning, R.; Hime, Andrew; Hoppe, Eric W.; Horton, Mark; Howard, Stanley; Howe, M. A.; Johnson, R. A.; Keeter, K.; Keillor, Martin E.; Keller, C.; Kephart, Jeremy D.; Kidd, Mary; Knecht, A.; Kochetov, Oleg; Konovalov, S.; Kouzes, Richard T.; LaFerriere, Brian D.; LaRoque, B. H.; Leon, Jonathan D.; Leviner, L.; Loach, J. C.; MacMullin, S.; Marino, Michael G.; Martin, R. D.; Mei, Dong-Ming; Merriman, Jason H.; Miller, M. L.; Mizouni, Leila; Nomachi, Masaharu; Orrell, John L.; Overman, Nicole R.; Phillips, D.; Poon, Alan; Perumpilly, Gopakumar; Prior, Gersende; Radford, D. C.; Rielage, Keith; Robertson, R. G. H.; Ronquest, M. C.; Schubert, Alexis G.; Shima, T.; Shirchenko, M.; Snavely, Kyle J.; Sobolev, V.; Steele, David; Strain, J.; Thomas, K.; Timkin, V.; Tornow, W.; Vanyushin, I.; Varner, R. L.; Vetter, Kai; Vorren, Kris R.; Wilkerson, John; Wolfe, B. A.; Yakushev, E.; Young, A.; Yu, Chang-Hong; Yumatov, Vladimir; Zhang, C.

2011-10-01

95

Remote earth sensing experiments  

Energy Technology Data Exchange (ETDEWEB)

Description of data devices for deriving multi-spectral measuring television measurement data of middle and high resolution through use of second generation Meteor-type satellites. Options for developing a permanent and active remote sensing system in USSR are discussed. It is noted that the present experiment is an important step in that direction. Design and structural data for this particular device and its application in the experiment are covered.

Trifonov, Yu.V.

1981-01-01

96

Reactor antineutrino experiments  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Neutrinos are elementary particles in the standard model of particle physics. There are 3 flavors of neutrinos that oscillate among themselves. Their oscillation can be described by a 3$\\times$3 unitary matrix, containing three mixing angles $\\theta_{12}$, $\\theta_{23}$, $\\theta_{13}$, and one CP phase. Both $\\theta_{12}$ and $\\theta_{23}$ are known from previous experiments. $\\theta_{13}$ was unknown just two years ago. The Daya Bay experiment gave the first definitive non-...

Lu, Haoqi

2014-01-01

97

Particle physics experiments 1980  

International Nuclear Information System (INIS)

This report describes work carried out in 1980 on experiments approved by the Particle Physics Ezperiments Selection Panel. A table of contents giving, title and collaboration, technique, accelerator used, year of running, status as at December 1980, the spokesman and experimental code, is followed by unedited contributions from each of the 54 experiments included in this annual review including lists of submitted publications. (U.K.)

1981-01-01

98

Expectations in Experiments  

Digital Repository Infrastructure Vision for European Research (DRIVER)

The rational expectations hypothesis is one of the cornerstones of current economic theorising. This review discusses a number of experiments that focus on expectation formation by human subjects and analyses the implications for the rational expectations hypothesis. The experiments show that most agents are weakly rational and that their expectations coordinate quickly; but the strong rational expectations hypothesis poorly describes the expectational dynamics and is outperformed by other hy...

2013-01-01

99

Surface electrical properties experiment  

Science.gov (United States)

The surface electrical properties (SEP) experiment was used to explore the subsurface material of the Apollo 17 landing site by means of electromagnetic radiation. The experiment was designed to detect electrical layering, discrete scattering bodies, and the possible presence of water. From the analysis of the data, it was expected that values of the electrical properties (dielectric constant and loss tangent) of lunar material in situ would be obtained.

Simmons, Gene; Strangway, David; Annan, Peter; Baker, Richard; Bannister, Lawrence; Brown, Raymon; Cooper, William; Cubley, Dean; deBettencourt, Joseph; England, Anthony W.; Groener, John; Kong, Jin-Au; LaTorraca, Gerald; Meyer, James; Nanda, Ved; Redman, David; Rossiter, James; Tsang, Leung; Urner, Joseph; Watts, Raymond

1973-01-01

100

The MAJORANA Experiment  

CERN Multimedia

The MAJORANA collaboration is actively pursuing research and development aimed at a tonne-scale 76Ge neutrinoless double-beta decay) experiment. The current, primary focus is the construction of the MAJORANA DEMONSTRATOR experiment, an R&D effort that will field approximately 40kg of germanium detectors with mixed enrichment levels. This article provides a status update on the construction of the DEMONSTRATOR.

,

2011-01-01

 
 
 
 
101

TELMA Cross Experiment Guidelines  

Digital Repository Infrastructure Vision for European Research (DRIVER)

This document contains the guidelines developed by members of TELMA as a means for planning, conducting, and analysing a cross experiment aimed at contributing to the construction of a shared research perspective among TELMA teams . This is the product of the PhD students and young researchers that brought forward the whole activity. The actual experimental phase was proceeded by a reflective phase in which an agreement was achieved on what research questions to address during the experiment....

2007-01-01

102

Sharing safety experience  

International Nuclear Information System (INIS)

The paper presents the experience of international cooperation in the field of nuclear safety within the bounds of OECD countries. Three main questions are discussed: Why is it in the interest of all countries to share their experience in nuclear safety; how can countries most profitably interact to achieve this objective; how do countries already cooperate in nuclear safety. The necessity of international cooperation on nuclear safety based more on international organizations and less on direct bi-lateral contacts is stressed

1980-10-24

103

Chemical analysis experiment method  

Energy Technology Data Exchange (ETDEWEB)

This book arranges chemical analysis experiment methods. It lists experiments in Korean alphabetical order, which includes how to use a gas burner, drying machine, wide-mouth bottle, cooling device, desiccator, crucible, litmus paper, mess cylinder, mini timer, burner, a burette, a gravimeter, soda line, a water-jet pump, test tube, silica gel, adapter, a filter bed, calcium chloride, a glass tube and glass bottle, plastic device, a paper wiper, a vacuum gauge, color tape, tweezers and activated carbon.

Mun, Seoung Myeong

1995-11-15

104

Chemical analysis experiment method  

International Nuclear Information System (INIS)

This book arranges chemical analysis experiment methods. It lists experiments in Korean alphabetical order, which includes how to use a gas burner, drying machine, wide-mouth bottle, cooling device, desiccator, crucible, litmus paper, mess cylinder, mini timer, burner, a burette, a gravimeter, soda line, a water-jet pump, test tube, silica gel, adapter, a filter bed, calcium chloride, a glass tube and glass bottle, plastic device, a paper wiper, a vacuum gauge, color tape, tweezers and activated carbon.

1995-01-01

105

Experiments with dipole antennas  

International Nuclear Information System (INIS)

Employment of a data-acquisition system for data collection and calculations makes experiments with antennas more convenient and less time consuming. The determined directional patterns of the dipole antennas of different lengths are in reasonable agreement with theory. The enhancement of the signal by using a reflector is demonstrated, and a variant of the Yagi-Uda antenna is explored. The experiments are suitable as laboratory works and classroom demonstrations, and are attractive for student projects.

2009-11-01

106

Illegal Entrepreneurship Experience  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Existing studies show a positive relationship between entrepreneurs' business performance and their conventional human capital as measured by previous business experience and formal education. In this paper, we explore whether illegal entrepreneurship experience (IEE), an unconventional form of human capital, is related to the performance and motivation of entrepreneurs operating legal businesses in a transition context. Using regression techniques on a sample of 399 private business owners i...

Aidis, Ruta; Praag, Mirjam

2004-01-01

107

The LHCb experiment  

CERN Multimedia

The LHCb experiment is designed to fully exploit the large number of b hadrons expected at the LHC energy and luminosity. The experiment is equipped with particle identification devices and can efficiently trigger events with different B-meson final states, allowing systematic studies of CP violation and other rare phenomena in the b hadron system with a high precision which could reveal physics beyond the Standard Model.

Nakada, Tatsuya

2000-01-01

108

The COBRA experiment  

International Nuclear Information System (INIS)

The COBRA experiment aims to use a large array of CdZnTe semiconductor detectors to search for neutrinoless double beta decay. The COBRA collaboration are currently operating a small proto-type array of crystals in a low-background environment. This paper presents the current status of the experiment, results from current and previous proto-types and future prospects for COBRA

2008-07-01

109

The ATHENA antihydrogen experiment  

International Nuclear Information System (INIS)

The ATHENA experiment is being built at CERN to produce and trap neutral antihydrogen. Here we give an overview of the plans to produce antihydrogen. The experiment must 1) trap the antiprotons produced by the CERN accelerators, 2) produce and trap positrons, 3) combine the two charge species into antihydrogen, and finally 4) detect the presence of the antihydrogen. In this paper we discuss how we intend to accomplish each of these steps

1999-12-10

110

The ATHENA antihydrogen experiment  

CERN Document Server

The ATHENA experiment is being built at CERN to produce and trap neutral antihydrogen. Here we give an overview of the plans to produce antihydrogen. The experiment must (1) trap the antiprotons produced by the CERN accelerators, (2) produce and trap positrons, (3) combine the two charge species into antihydrogen, and finally (4) detect the presence of the antihydrogen. In this paper we discuss how we intend to accomplish each of these steps. (9 refs).

Fine, K S; Bollen, G; Cantone, A; Carlberg, C B; Cesar, C L; Charlton, M; Collier, M; Doser, Michael; Eades, John; Eklöw, N A; Fedele, R; Fine, K S; Fontana, A; Fritioff, T; Gemme, G; Gorini, G; Hangst, J S; Hayano, R; Hermes, E; Holzscheiter, M H; Jørgensen, L V; Kleppner, D; Lagomarsino, V; Landua, Rolf; Lewis, R A; Lodi-Rizzini, E; Macri, M; Manuzio, G; Marchesotti, M; Merrison, J P; Pruys, H S; Regenfus, C; Riedler, P; Rotondi, A; Rouleau, G; Salvini, P; Schuch, R H; Smith, G A; Testera, G; Torelli, G; Uggerhøj, Erik; Van der Werf, D P; Venturelli, L; Yamazaki, T; Yamazaki, Y; Zanello, D; Zwahlen, M

1999-01-01

111

Radiochemical solar neutrino experiments  

CERN Document Server

Radiochemical experiments have been crucial to solar neutrino research. Even today, they provide the only direct measurement of the rate of the proton-proton fusion reaction, p + p --> d + e^+ + nu_e, which generates most of the Sun's energy. We first give a little history of radiochemical solar neutrino experiments with emphasis on the gallium experiment SAGE -- the only currently operating detector of this type. The combined result of all data from the Ga experiments is a capture rate of 67.6 +/- 3.7 SNU. For comparison to theory, we use the calculated flux at the Sun from a standard solar model, take into account neutrino propagation from the Sun to the Earth and the results of neutrino source experiments with Ga, and obtain 67.3 ^{+3.9}_{-3.5} SNU. Using the data from all solar neutrino experiments we calculate an electron neutrino pp flux at the earth of (3.41 ^{+0.76}_{-0.77}) x 10^{10}/(cm^2-s), which agrees well with the prediction from a detailed solar model of (3.30 ^{+0.13} _{-0.14}) x 10^{10}/(cm^...

Gavrin, V N

2007-01-01

112

Skylab sleep monitoring experiment (experiment M133)  

Science.gov (United States)

A summary of the conceptual design of the Skylab sleep monitoring experiment and a comprehensive compilation of the data-analysis results from the three Skylab missions is presented. One astronaut was studied per flight, electroencephalographic, electro-oculographic, and headmotion signals acquired during sleep by use of an elastic recording cap containing sponge electrodes and an attached miniature preamplifier/accelerometer unit are shown. A control-panel assembly, mounted in the sleep compartment, tested electrodes, preserved analog signals, and automatically analyzed data in real time (providing a telemetered indication of sleep stage). Results indicate that men are able to obtain adequate sleep in regularly scheduled eight-hour rest periods during extended space missions.

Frost, J. D., Jr.

1975-01-01

113

Understanding customer experience.  

Science.gov (United States)

Anyone who has signed up for cell phone service, attempted to claim a rebate, or navigated a call center has probably suffered from a company's apparent indifference to what should be its first concern: the customer experiences that culminate in either satisfaction or disappointment and defection. Customer experience is the subjective response customers have to direct or indirect contact with a company. It encompasses every aspect of an offering: customer care, advertising, packaging, features, ease of use, reliability. Customer experience is shaped by customers' expectations, which largely reflect previous experiences. Few CEOs would argue against the significance of customer experience or against measuring and analyzing it. But many don't appreciate how those activities differ from CRM or just how illuminating the data can be. For instance, the majority of the companies in a recent survey believed they have been providing "superior" experiences to customers, but most customers disagreed. The authors describe a customer experience management (CEM) process that involves three kinds of monitoring: past patterns (evaluating completed transactions), present patterns (tracking current relationships), and potential patterns (conducting inquiries in the hope of unveiling future opportunities). Data are collected at or about touch points through such methods as surveys, interviews, focus groups, and online forums. Companies need to involve every function in the effort, not just a single customer-facing group. The authors go on to illustrate how a cross-functional CEM system is created. With such a system, companies can discover which customers are prospects for growth and which require immediate intervention. PMID:17345685

Meyer, Christopher; Schwager, Andre

2007-02-01

114

Structure of aesthetic experience  

Directory of Open Access Journals (Sweden)

Full Text Available This study investigated the strructure of aesthetic experience and the relationship of this structure and other dimensions of the subjective judgements of paintings. Aesthetic experinece was defined by nine descriptors selected from relevant literature: fascinating, irresistible, unique, eternal, profound, exceptional, universal, unspeakable, I would like to have this painting. 24 paintings were judged of on nine unipolar seven-step scales that were made of the up-mentioned descriptors. The factor analysis extracted one principal component. Multiple regression has shown weak correlation between aesthetic expirience (averaged nine judgements and the factors of the subjective judgements of paintings (the factors were measured by the instrument SDS 16; Radonji? & Markovi?, 2005. Factor Arousal was a significant predictor of aesthetic experience, but the percent of explained variance was relatively low (circa 23%. The prediction of other factors, Regularity, Atraction and Serenity, was not significant. For the purpose of this analysis we used the data from the previous study (Radonji? and Markovi?, 2005. Further regression analyses indicated the role of aesthetic experience in the similarity judgments of paintings: the distributions of the paintings within 2-D and 3-D MDS space were partially explained by the measure of aesthetic experience. The MDS data were taken from the previous study (Radonji? i Markovi?, 2004. The results of this study suggest that the aesthetic experience is a unique and relatively independent phenomenon: internally, it is not dividable into components, and externally, it is weakly correlated with the other subjective dimensions.

Polovina Marko

2006-01-01

115

The KATRIN Experiment  

Science.gov (United States)

The KArslruhe TRltium Neutrino experiment, KATRlN will determine the neutrino mass scale with a sensitivity of 0.2 e V/c2 (90%CL) via a measurement of the T2 ?-spectrum near its endpoint at 18.57 keV. The experiment consists of a windowless gaseous Tritium source, a differential- and cryopumping section, the pre- and main-spectrometer, both of the MAC-E filter type and a pixelated silicon detector. A background of less than 10 mHz and an energy resolution of 0.93 eV are necessary to achieve the desired sensitivity within 1000 days of data-taking. The experiment is currently reaching its final commissioning phase. In these proceedings, we focus on the main-spectrometer and its inner wire electrode.

Prall, Matthias

2012-08-01

116

The Nab experiment  

Science.gov (United States)

Neutron decay is a clean semi-leptonic process which depends on the vector GV and axial-vector GA coupling constants. The ratio ?= GA/GV, which can be extracted from various correlations in decay products of the neutron, is important for determination of Vud in unitarity tests of the CKM matrix, and to test extensions of the standard model. The goal of the newly funded Nab experiment is to measure the electron-neutrino decay correlation a with a relative uncertainty of 10-3, and the Fierz interference term b with an overall uncertainty of 3x10-3. This experiment uses a new technique to determine the electron-neutrino angle from the energy of the electron and proton, detected in coincidence. We will present the physical design and projected sensitivity of this experiment.

Crawford, Christopher

2012-10-01

117

The POLARBEAR Experiment  

CERN Document Server

We present the design and characterization of the POLARBEAR experiment. POLARBEAR will measure the polarization of the cosmic microwave background (CMB) on angular scales ranging from the experiment's 3.5 arcminute beam size to several degrees. The experiment utilizes a unique focal plane of 1,274 antenna-coupled, polarization sensitive TES bolometers cooled to 250 milliKelvin. Employing this focal plane along with stringent control over systematic errors, POLARBEAR has the sensitivity to detect the expected small scale B-mode signal due to gravitational lensing and search for the large scale B-mode signal from inflationary gravitational waves. POLARBEAR was assembled for an engineering run in the Inyo Mountains of California in 2010 and was deployed in late 2011 to the Atacama Desert in Chile. An overview of the instrument is presented along with characterization results from observations in Chile.

Kermish, Z; Anthony, A; Arnold, K; Arnold, K; Barron, D; Boettger, D; Borrill, J; Chapman, S; Chinone, Y; Dobbs, M A; Errard, J; Fabbian, G; Flanigan, D; Fuller, G; Ghribi, A; Grainger, W; Halverson, N; Hasegawa, M; Hattori, K; Hazumi, M; Holzapfel, W L; Howard, J; Hyland, P; Jaffe, A; Keating, B; Kisner, T; Lee, A T; Jeune, M Le; Linder, E; Lungu, M; Matsuda, F; Matsumura, T; Meng, X; Miller, N J; Morii, H; Moyerman, S; Myers, M J; Nishino, H; Paar, H; Quealy, E; Reichardt, C L; Richards, P L; Ross, C; Shimizu, A; Shimon, M; Shimmin, C; Sholl, M; Siritanasak, P; Spieler, H; Stebor, N; Steinbach, B; Stompor, R; Suzuki, A; Tomaru, T; Tucker, C; Zahn, O

2012-01-01

118

Forward Experiments at LHC  

CERN Document Server

Observations of Cosmic Rays over a wide energy range provide useful information to understand high energy phenomena in the Universe. Large experiments for the detection of secondary particles produced in the interaction of primary Cosmic Rays are providing valuable inputs and progress in the field. However, the uncertainty caused from the poor knowledge of the interaction between very high energy primary cosmic ray and the Earth’s atmosphere prevents the deduction of astrophysical parameters from the observational data. The Large Hadron Collider (LHC) provides the best opportunity for calibrating the hadron interaction models in the most interesting energy range, between 1015 and 1017 eV. To constrain the models used in the extensive air shower simulations the measurements of very forward particles are mandatory. Among the LHC experiments, measurements expected by TOTEM, ZDCs and LHCf will give crucial forward particle data for cosmic ray studies. In this paper, the impact of LHC forward experiments for Cos...

Tricomi, Alessia

2010-01-01

119

Reactor antineutrino experiments  

Science.gov (United States)

Neutrinos are elementary particles in the standard model of particle physics. There are three flavors of neutrinos that oscillate among themselves. Their oscillation can be described by a 3×3 unitary matrix, containing three mixing angles ?12, ?23, ?13, and one CP phase. Both ?12 and ?23 are known from previous experiments. ?13 was unknown just two years ago. The Daya Bay experiment gave the first definitive non-zero value in 2012. An improved measurement of the oscillation amplitude sin 22(? 13) = 0.090+0.008-0.009 and the first direct measurement of the \\bar ? e mass-squared difference ? ? m2ee? = (2.59+0.19-0.20)× 10-3 eV2 were obtained recently. The large value of ?13 boosts the next generation of reactor antineutrino experiments designed to determine the neutrino mass hierarchy, such as JUNO and RENO-50.

Lu, Haoqi

2014-05-01

120

The LVD experiment  

International Nuclear Information System (INIS)

The large volume detector (LVD) can be defined as an underground observatory devoted to neutrino astronomy and to the measurement of the penetrating components of cosmic rays. The experiment has been optimized for major physics items such as the detection of the neutrino bursts of collapsing stars and the search for astrophysical point sources of ultra-high energy gammas and neutrinos. It can also be defined as a multipurpose experiment where many important issues, especially neutrino oscillations, standard cosmic ray physics, proton decay in the channel (p ? K+ + anti-neutrino), solar neutrinos and monopoles can be studied with varying degrees of sensitivity and on a competitive basis. The experiment will be located in Hall A of the Gran Sasso Laboratory. (author). 12 refs.; 7 figs

1989-01-01

 
 
 
 
121

An Organoleptic Laboratory Experiment  

Science.gov (United States)

Flavorings in foods and fragrances in personal care products is a topic often discussed in chemistry classes designed for the general education of non-science majors. A laboratory experiment has been designed to accompany the lecture topic. Compounds in ten different classes of organic molecules that are used in the fragrance and food industry are provided to students. Students whiff the vapors of each compound and describe the organoleptic properties using a set of terms utilized in the fragrance and food industry. A set of questions guides students to an understanding of the relationship between structure of molecules and smell. Students are permitted to create their own fragrance based on the results of the experiment. Student response has been favorable. The experiment rectifies misconceptions students have about structure and odor, and gives positive reinforcement to the lecture material.

Risley, John M.

1996-12-01

122

Future Reactor Experiments  

CERN Document Server

The measurement of the neutrino mixing angle $\\theta_{13}$ opens a gateway for the next generation experiments to measure the neutrino mass hierarchy and the leptonic CP-violating phase. Future reactor experiments will focus on mass hierarchy determination and the precision measurement of mixing parameters. Mass hierarchy can be determined from the disappearance of reactor electron antineutrinos based on the interference effect of two separated oscillation modes. Relative and absolute measurement techniques have been explored. A proposed experiment JUNO, with a 20 kton liquid scintillator detector of $3%/$$\\sqrt{E(MeV)}$ energy resolution, $\\sim$ 53 km far from reactors of $\\sim$ 36 GW total thermal power, can reach to a sensitivity of $\\Delta\\chi^{2}>16$ considering the spread of reactor cores and uncertainties of the detector response. Three of mixing parameters are expected to be measured to better than 1% precision. There are multiple detector options for JUNO under investigation. The technical challenges...

He, Miao

2013-01-01

123

KISMET tungsten dispersal experiment  

Energy Technology Data Exchange (ETDEWEB)

Results of the KISMET tungsten dispersal experiment indicate a relatively small degree of wall-rock contamination caused by this underground explosive experiment. Designed as an add-on to the KISMET test, which was performed in the U-1a.02 drift of the LYNER facility at Nevada Test Site on 1 March 1995, this experiment involved recovery and analysis of wall-rock samples affected by the high- explosive test. The chemical, high-explosive blast drove tungsten powder, placed around the test package as a plutonium analog, into the surrounding wall- rock alluvium. Sample analyses by an analytical digital electron microscope (ADEM) show tungsten dispersed in the rock as tiny (<10 {mu}m) particles, agglomerates, and coatings on alluvial clasts. Tungsten concentrations, measured by energy dispersive spectral analysis on the ADEM, indicate penetration depths less than 0.1 m and maximum concentrations of 1.5 wt % in the alluvium.

Wohletz, K.; Kunkle, T.; Hawkins, W.

1996-12-01

124

Droplet Combustion Experiment movie  

Science.gov (United States)

The Droplet Combustion Experiment (DCE) was designed to investigate the fundamental combustion aspects of single, isolated droplets under different pressures and ambient oxygen concentrations for a range of droplet sizes varying between 2 and 5 mm. The DCE principal investigator was Forman Williams, University of California, San Diego. The experiment was part of the space research investigations conducted during the Microgravity Science Laboratory-1 mission (STS-83, April 4-8 1997; the shortened mission was reflown as MSL-1R on STS-94). Advanced combustion experiments will be a part of investigations plarned for the International Space Station. (1.1 MB, 12-second MPEG, screen 320 x 240 pixels; downlinked video, higher quality not available)A still JPG composite of this movie is available at http://mix.msfc.nasa.gov/ABSTRACTS/MSFC-0300164.html.

2003-01-01

125

Improving the patient's experience  

Digital Repository Infrastructure Vision for European Research (DRIVER)

When arriving at the eye care unit, patients often feel unsure of what is going to happen, anxious, and vulnerable. Many have never found themselves in a hospital setting before or have never travelled or slept away from home.It is an integral part of eye care to make sure a patient's experience is a positive one. This article offers suggestions for good, evidence-based, practice to improve this experience.Our suggestions should necessarily be adapted to local context: resource-poor settings ...

2008-01-01

126

Fusion ignition experiment  

International Nuclear Information System (INIS)

A fusion ignition experiment (IGNITEX) is described, the original concept for which was proposed by Rosenbluth, Weldon and Woodson. In this concept, a single-turn-coil tokamak device produces a self-sustained fusion reaction of the type T (d,n) ?. The basic idea is to employ a very high magnetic field and a very high plasma current to heat the plasma ohmically to thermonuclear temperatures and then to produce a stable ignited plasma. The experiment will permit the scientific study of a new regime of physics: alpha heated ignited plasmas. (author). 28 refs, 4 figs

1990-01-01

127

Gas Chromatography Experiment  

Science.gov (United States)

This Microsoft Word document describes a Gas Chromatography experiment involving the separation and quantitation of four butyl alcohol isomers. It has a complete background about the components of a GC instrument (with labeled pictures) and their functions. The exercise includes a section devoted to the measurement of response factors of the detector in use (here an FID). This would be a good experiment for a new faculty member to use as is, with slight modification to make it relevant to the particular GC system to be used.

2011-05-20

128

The Double Chooz Experiment  

International Nuclear Information System (INIS)

There is broad consensus in the worldwide physics community as to the need for a new reactor-neutrino experiment to measure or limit the neutrino mixing angle ?13. The Double Chooz Experiment, planned for operation in the years 2008-2011, will search for values of sin22?13 down to ?0.03. This will be the first new information on ?13 in over a decade and will cover most of the remaining parameter space. A quick and relatively inexpensive project is made possible by the existing neutrino laboratory at the Chooz site

2006-11-17

129

Divertor bias experiments  

International Nuclear Information System (INIS)

Electrical biasing of the divertor target plates has recently been implemented on several tokamaks. The results of these experiments to date will be reviewed in this paper. The bias electrode configuration is unique in each experiment. The effects of biasing on the scrape-off layer (SOL) plasma also differ. By comparing results between machines, and using theoretical models, an understanding of the basic physics of biasing begins to emerge. Divertor biasing has been demonstrated to have a strong influence on the particle and energy transport within the SOL. The ability to externally control the SOL plasma with biasing has promising applications to future tokamak reactors. ((orig.))

1995-04-01

130

Recent dielectronic recombination experiments  

International Nuclear Information System (INIS)

New recombination experiments with merged cold beams of electrons and atomic ions have been carried out at the storage ring facilities TSR in Heidelberg, ESR in Darmstadt, and CRYRING in Stockholm. A brief overview is given on the recent activities in which the Giessen group was engaged. Topics of this research were dielectronic recombination (DR) of astrophysically relevant ions, recombination of highly charged ions with respect to cooling losses in storage rings, field effects on DR, search for interference effects in photorecombination of ions, correlation effects in DR of low-Z ions, spectroscopy of high-Z ions by DR, and lifetimes of metastable states deduced from DR experiments

1998-11-01

131

Rod overpressure experiment (ROPE)  

International Nuclear Information System (INIS)

This project was undertaken to obtain both experimental data and experience with certain experimental techniques, which were considered necessary for the multilateral Rod Overpressure Experiment (ROPE Project). A BWR segment rod was refilled after base irradiation to give a rod internal pressure in excess of the system pressure. This rod and an identical (but not refilled) reference rod were irradiated in the R2 reactor. The overpressure rod had a clad outward creep of approximately 8 ?m after 20 days irradiation at 30 kW/m, but with an overall reduction in the pellet-clad gap. (author)

1987-01-01

132

Experiment SPHERE status 2008  

Energy Technology Data Exchange (ETDEWEB)

The expedition carried out in March, 2008 to Lake Baikal became an important stage in the development of the SPHERE experiment. During the expedition the SPHERE-2 installation was hoisted, for the first time, on a tethered balloon, APA, to a height of 700 m over the lake surface covered with ice and snow. A series of test measurements were made. Preliminary results of the data processing are presented. The next plan of the SPHERE experiment is to begin a set of statistics for constructing the CR spectrum in the energy range 10{sup 16}-10{sup 18} eV.

Shaulov, S.B., E-mail: shaul@sci.lebedev.r [P.N.Lebedev Physical Institute, Russian Academy of Sciences, Leninsky prospect 53, Moscow 119991 (Russian Federation); Besshapov, S.P.; Kabanova, N.V.; Sysoeva, T.I. [P.N.Lebedev Physical Institute, Russian Academy of Sciences, Leninsky prospect 53, Moscow 119991 (Russian Federation); Antonov, R.A.; Anyuhina, A.M.; Bronvech, E.A.; Chernov, D.V.; Galkin, V.I. [Skobeltsyn Institute of Nuclear Physics, Lomonosov State University, Moscow 119992 (Russian Federation); Tkaczyk, W. [Department of Experimental Physics of University of Lodz (Poland); Finger, M. [Karlov University, Prague (Czech Republic); Sonsky, M. [COMPAS Consortium, Turnov (Czech Republic)

2009-12-15

133

Experiments with. lambda. hypernuclei  

Energy Technology Data Exchange (ETDEWEB)

Recent observations of hypernuclear bound states in experiments at the Brookhaven National Laboratory Alternate Gradient Synchrotron are described. Gamma rays from hypernuclei have been observed in coincidence with a (K/sup -/,..pi../sup -/) energy difference spectrum. The energy resolution and purity of the (K/sup -/,..pi../sup -/) spectrum demonstrate unambiguously the hypernuclear origin of the gamma rays. The case of ..lambda../sup 7/Li is discussed in detail as it represents the first successful application of the technique. Experiments in progress at Brookhaven on other hypernuclei and prospects for the future are discussed.

May, M.

1982-01-01

134

Experiments with ? hypernuclei  

International Nuclear Information System (INIS)

Recent observations of hypernuclear bound states in experiments at the Brookhaven National Laboratory Alternate Gradient Synchrotron are described. Gamma rays from hypernuclei have been observed in coincidence with a (K"-,?"-) energy difference spectrum. The energy resolution and purity of the (K"-,?"-) spectrum demonstrate unambiguously the hypernuclear origin of the gamma rays. The case of sub(?)_7Li is discussed in detail as it represents the first successful application of the technique. Experiments in progress at Brookhaven on other hypernuclei and prospects for the future are discussed. (orig.)

1982-06-25

135

Nucleon diffraction dissociation (experiment)  

International Nuclear Information System (INIS)

The present situation in nucleonic diffraction dissociation into the (N?) system is discussed. New experimental data have come mainly from experiments performed at high energies by electronics technique at Serpukhov, FNAL and ISR with high statistics. There are three arguments for the existence of baryon-exchange Deck mechanism. The results show the existence of the correlation between production and decay of (?N) system. At least partially these correlations can be explained kinematically. The mass distribution for experiments are compared. Sets of data are absolutely normalized. The spectra turned out to be almost identical apart from the mass range around 1.5 GeV

1976-07-21

136

Solar neutrino experiments: Theory  

Energy Technology Data Exchange (ETDEWEB)

The expected capture rates and their uncertainties are reevaluated for the chlorine and gallium experiments using improved laboratory data and new theoretical calculations. I also state a minimum value for the flux of solar neutrinos that is expected provided only that the sun is currently burning light nuclei at the rate it is emitting photons from its surface and that nothing happens to solar neutrinos on their way to the earth. These results are used: together with Monte Carlo simulations performed by Bruce Cleveland: to determine how much gallium is required for a solar neutrino experiment.

Bahcall, J.N.

1985-01-25

137

The OPERA experiment  

CERN Document Server

Following the Super-Kamiokande findings on atmospheric neutrinos, accelerator neutrinos have started to be exploited to confirm the indication for neutrino oscillations and perform more complete measurements of the mass differences and mixing parameters. In Europe, the long baseline beam CERN Neutrino to Gran Sasso CNGS is aimed at direct appearance searches of nu /sub mu / to nu /sub tau /. The OPERA experiment in Gran sasso will use photographic emulsions in a large hybrid detector to point at nu , interactions coming from the CNGS beam in a "zero background" approach. The principles of the experiment and its projected performances are described. (12 refs).

Pessard, H

2001-01-01

138

STELLA experiment: Hardware issues  

International Nuclear Information System (INIS)

The STaged ELectron Laser Acceleration (STELLA) experiment is currently being assembled and tested at the BNL Accelerator Test Facility (ATF). The existing BNL inverse free electron laser (IFEL) has been positioned upstream of the inverse Cerenkov acceleration (ICA) experiment on Beamline no. 1. This beamline also features new quadrupoles and a new spectrometer capable of a +/-20% energy acceptance. A new laser beam transport system has been installed to permit accurate control of the laser phase for the laser beams sent to the IFEL and ICA devices. Detection of the microbunches will be performed using a coherent transition radiation (CTR) diagnostic similar to one already demonstrated at the ATF

1999-07-12

139

Experiments in radiochemistry  

International Nuclear Information System (INIS)

Twelve experiments in radiochemistry, nuclear chemistry, radiation detection and radiation measurement are presented which have been tested in teaching practice. Criteria of selection were minimum apparative expenditure, preparation time, radiation exposure, and danger of incorporation or contamination. The experiments will teach students how to handle unsealed radioactive materials within a fraction of a permissible values and thus train them in radiochemical techniques of working. Theoretical, historical and topical aspects are mentioned in order to give the students some background. A detailed bibliography of relevant publications is given. (orig./HP)

1980-01-01

140

Initial Cooling Experiment (ICE)  

CERN Document Server

In 1977, in a record-time of 9 months, the magnets of the g-2 experiment were modified and used to build a proton/antiproton storage ring: the "Initial Cooling Experiment" (ICE). It served for the verification of the cooling methods to be used for the "Antiproton Project". Stochastic cooling was proven the same year, electron cooling followed later. Also, with ICE the experimental lower limit for the antiproton lifetime was raised by 9 orders of magnitude: from 2 microseconds to 32 hours. For its previous life as g-2 storage ring, see 7405430. More on ICE: 7711282, 7809081, 7908242.

Photographic Service

1978-01-01

 
 
 
 
141

The VIP Experiment  

CERN Document Server

The Pauli Exclusion Principle (PEP) is a basic principle of Quantum Mechanics, and its validity has never been seriously challenged. However, given its importance, it is very important to check it as thoroughly as possible. Here we describe the VIP (Violation of PEP) experiment, an improved version of the Ramberg and Snow experiment (Ramberg and Snow, Phys. Lett. B238 (1990) 438); VIP shall be performed at the Gran Sasso underground laboratories, and aims to test the Pauli Exclusion Principle for electrons with unprecedented accuracy, down to $\\frac{\\beta^2}{2} \\sim 10^{-30}$

Bartalucci, S; Bragadireanu, M; Bucci, C; Cargnelli, M; Catitti, M; Curceanu, C; Matteo, S D; Egger, J P; Ferrari, N; Fuhrmann, H; Guaraldo, C; Iliescu, M; Ishiwatari, T; Laubenstein, M; Marton, J; Milotti, E; Pietreanu, D; Ponta, T; Sirghi, D; Sirghi, F; Sperandio, L; Widmann, E; Zmeskal, J

2005-01-01

142

Steam generator tube experience  

International Nuclear Information System (INIS)

This report provides information pertaining to the status of PWR steam generator tube experience and the resolution of unresolved safety issues A-3, A-4, and A-5 regarding steam generator tube integrity. It provides an overview of the types of problems which have occurred in PWR steam generators with particular emphasis on recent operating experience. The report also discusses short- and long-term corrective actions being pursued by the industry to resolve these problems, steam generator inspection and repair requirements which have been established to ensure the continued safe operation of PWR steam generators, and occupational radiation exposures associated with the above-listed activities

1982-01-01

143

AGS experiments: 1985, 1986, 1987  

International Nuclear Information System (INIS)

This report contains: Experimental areas layout, table of beam parameters and fluxes, experiment schedule ''as run,'' experiment long range schedule, a listing of experiments by number, two-page summaries of each experiment, also ordered by number, and publications of AGS experiments, 1982-1987

1987-01-01

144

AGS experiments, 1988, 1989, 1990  

International Nuclear Information System (INIS)

This report contains: experimental areas layout; table of beam parameters and fluxes; experiment schedule ''as run''; experiment long range schedule; a listing of experiments by number; two-page summaries of each experiment begin here, also ordered by number; publications of AGS experiments; and list of experimenters

1991-01-01

145

AGS experiments---1987, 1988, 1989  

International Nuclear Information System (INIS)

This report contains: Experimental Areas Layout; Table of Beam Parameters and Fluxes; Experiment Schedule ''as run''; Experiment Long Range Schedule; A listing of experiments by number; Two-page summaries of each experiment begin here, also ordered by number; Publications of AGS experiments; and List of experimenters

1989-01-01

146

Experiments with SIRa; Experiences avec SIRa  

Energy Technology Data Exchange (ETDEWEB)

To generate radioactive ion beams two techniques are generally used. One which is currently in use at GANIL consists in the projectile fragmentation in a thin target followed by a separation in a spectrometer (of LISE or SISSI type) and alpha spectrometry. The second method, named ISOL (Isotope Separator On-Line), briefly described in this report, is at present studied on the testing benchmark SIRa (Separateur d`Ion Radioactifs) having in view its future utilisation with SPIRaL (Source de Production d`Ions Radioactifs en Ligne).A beam of slightly accelerated ions is stopped in a thick target of hot carbon. The atoms produced in the target surface are subsequently diffused through a transfer tube up to a ECR source plasma where they are ionised and then accelerated. The originality of the GANIL project resides in the utilization of a largely extended range of heavy ions. To obtain different radioactive nuclei it is sufficient to change the incident beam and that permits the permanent utilisation of a robust carbon target. The experiments currently performed on SIRa consists in measuring the amount of different nuclei produced, aiming at optimization of the production of radioactive ions. This production depends essentially on the efficiency of the transfer from target to the ECR source, on the ionisation efficiency of this source and the efficiency of the SIRa separator. Different target-source configurations were tested. Also, a new assembly, NANOGAN II, was tested as the first to the deliver a beam for SPIRaL 2 refs.

Angelique, J.C.; Orr, N.A. [Lab. de Physique Corpusculaire, Caen Univ., 14 (France); Collaboration: Bruyeres-le-Chatel, CENBG-Bordeaux, CSNSM-Orsay, GANIL-Caen, IPN-Orsay

1997-12-31

147

Highlights from PETRA experiments  

International Nuclear Information System (INIS)

The experiments at the DESY e"+e"- storage ring PETRA presently are focussed on four major subjects: tests of quantum electrodynamics (QED) and search for weak neutral current effects; search for new particles such as heavy leptons and new heavy quark states; analysis of gluon bremsstrahlung in the hadron annihilation channel; and two photon interactions. This lecture concentrates on some of the topics

1981-01-01

148

Prospects in coincidence experiments  

International Nuclear Information System (INIS)

The sensitivity of virtual photons to the local variations of the charge and magnetization densities is exploited to study the short-range part of the nucleon-nucleon interaction inside the nucleus. The possibility of varying energy, squared mass and longitudinal polarization of the photons independently enables us to disentangle the mechanisms related to the internal structure of the nucleon (e.g. quark interchange) and the contribution due to meson exchange. Coincidence experiments of the type (e,e'N) and (e,e'NN) are performed to suppress the meson contribution to the longitudinal part of the quasi-elastic peak. Four typical examples of coincidence experiments induced by virtual photons are discussed: experiments (1) on the spectroscopic structure of the quasi-elastic peak and the problem of deep lying hole states; (2) on the structure of the continuum; (3) on the low energy side of the quasi-elastic peak; and finally a three-arm coincidence experiment. (Auth.)

1983-11-14

149

Rocket Motor Charging Experiments.  

Science.gov (United States)

A study of the effect of rocket engines on electrostatic charge accumulation was made. Experiments were conducted to measure short-circuit charging current and open-circuit voltage produced by 5-inch solid-fuel rocket motors during static firings at sea l...

E. F. Vance J. E. Nanevicz

1966-01-01

150

Notes on Experiments.  

Science.gov (United States)

Described are the purposes, laboratory set-ups, and procedures of four classroom experiments: ultrasound speedometer; vibrating-bar depth gauge; folding three-dimensional model of equipotential surfaces; and a simple optical system for the reconstruction of images from computer-generated holograms. Diagrams and pictures are provided. (YP)

Physics Education, 1989

1989-01-01

151

Experiment CATETO I  

International Nuclear Information System (INIS)

In the irradiation experiment CATETO I reduced activation (RA) steel will be irradiated up to 1.5 dpa at a temperature of 300 C. The results of the calculation of the nuclear constants, the reactivity effect, and the activity of the steel samples are reported. (orig.)

1994-01-01

152

Experiment CHARRIOT. Activity calculations  

Energy Technology Data Exchange (ETDEWEB)

In the irradiation experiment CHARRIOT low activation (LA) steel will be irradiated up to 2.5 dpa at a temperature of 300 C. In this report the results of the calculation of the activity of the steel samples and the sample holder are reported. (orig.).

Freudenreich, W.E.

1994-07-01

153

Experiment CHARRIOT. Activity calculations  

International Nuclear Information System (INIS)

In the irradiation experiment CHARRIOT low activation (LA) steel will be irradiated up to 2.5 dpa at a temperature of 300 C. In this report the results of the calculation of the activity of the steel samples and the sample holder are reported. (orig.)

1994-01-01

154

Experiment CATETO II  

International Nuclear Information System (INIS)

In the irradiation experiment CATETO II different reduced activation (RA) steels will be irradiated up to 2.5 dpa at a temperature of 300 C. The results of the calculation of the nuclear constants, the reactivity effect, and the activity of the steel samples are presented. (orig.)

1994-01-01

155

Categorizing My Leadership Experiences  

Science.gov (United States)

In this article, the author shares his experience as a superintendent fortunate enough to be part of the Wallace Foundation's Project LEAD. Along with 11 other superintendents, he got to trade war stories with the likes of Ron Heifetz and other distinguished faculty members from the Kennedy School of Government at Harvard. The group's first…

Domenech, Daniel A.

2005-01-01

156

The OLYMPUS experiment  

Energy Technology Data Exchange (ETDEWEB)

The OLYMPUS experiment was designed to measure the ratio between the positron-proton and electron-proton elastic scattering cross sections, with the goal of determining the contribution of two-photon exchange to the elastic cross section. Two-photon exchange might resolve the discrepancy between measurements of the proton form factor ratio, {mu}{sub p}G{sup p}{sub E}/G{sup p}{sub M}, made using polarization techniques and those made in unpolarized experiments. OLYMPUS operated on the DORIS storage ring at DESY, alternating between 2.01 GeV electron and positron beams incident on an internal hydrogen gas target. The experiment used a toroidal magnetic spectrometer instrumented with drift chambers and time-of-flight detectors to measure rates for elastic scattering over the polar angular range of approximately 25 -75 . Symmetric Moeller/Bhabha calorimeters at 1.29 and telescopes of GEM and MWPC detectors at 12 served as luminosity monitors. A total luminosity of approximately 4.5 fb{sup -1} was collected over two running periods in 2012. This paper provides details on the accelerator, target, detectors, and operation of the experiment.

Milner, R.; Hasell, D.K. [Massachusetts Institute of Technology, Cambridge, MA (United States); Kohl, M. [Hampton Univ., Hampton, VA (United States); Collaboration: The OLYMPUS Collaboration; and others

2013-12-15

157

The big experiment  

CERN Multimedia

"From an academic laboratory in Switzerland, Cern, the European Organisation for Nuclear Research, is conducting physics experiments that are mesmerising everyone. But are its scientitsts really going to answer the questions of life, the Univers and everyhing in between?" (4 pages)

MacEacheran, Mike

2010-01-01

158

The COMPASS experiment  

CERN Multimedia

Detail of one of the magnets on the Common Muon and Proton Apparatus for Structure and Spectroscopy (COMPASS) experiment. COMPASS studies the structure of composite particles which interact via the strong force, called hadrons. These have a complicated internal structure due to the nature of their force carriers, gluons, which can form self interacting bunches called glueballs.

Laurent Guiraud

1999-01-01

159

The Majorana Experiment  

CERN Document Server

The Majorana Collaboration is assembling an array of HPGe detectors to search for neutrinoless double-beta decay in Ge-76. Initially, Majorana aims to construct a prototype module to demonstrate the potential of a future 1-tonne experiment. The design and potential reach of this prototype Demonstrator module are presented.

Guiseppe, V E

2011-01-01

160

Chlorine solar neutrino experiment  

International Nuclear Information System (INIS)

The chlorine solar neutrino experiment in the Homestake Gold Mine is described and the results obtained with the chlorine detector over the last fourteen years are summarized and discussed. Background processes producing 37Ar and the question of the constancy of the production rate of 37Ar are given special emphasis

1985-01-25

 
 
 
 
161

SAMBA Project Experiences  

Science.gov (United States)

The purpose of the SAMBA project, running from January 2007 to February 2009, was to create a framework for allowing local communities and citizens (including low income population) to access community-oriented content and services by means of iDTV channels, specifically MHP over DVB-T. This paper summarises the project and the experiences gained from it.

Fuhrhop, Christian; Vaidya, Raju; Mayora, Oscar; Furtado, Elizabeth

162

Experiments in free fall  

Science.gov (United States)

A model lift containing a figure of Albert Einstein is released from the side of a tall building and its free fall is arrested by elastic ropes. This arrangement allows four simple experiments to be conducted in the lift to demonstrate the effects of free fall and show how they can lead to the concept of the equivalence of inertial and gravitational masses.

Art, Albert

2006-09-01

163

DSWA calorimeter bomb experiments  

Energy Technology Data Exchange (ETDEWEB)

Two experiments were performed in which 25 grams of TNT were detonated inside an expended detonation calorimeter bomb. The bomb had a contained volume of approximately 5.28 liters. In the first experiment, the bomb was charged with 3 atmospheres of nitrogen. In the second, it was charged with 2.58 atmospheres (23.1 psi gage) of oxygen. In each experiment pressure was monitored over a period of approximately 1200 microseconds after the pulse to the CDU. Monitoring was performed via two 10,000 psi 102AO3 PCB high frequency pressure transducers mounted symmetrically in the lid of the calorimeter bomb. Conditioners used were PCB 482As. The signals from the transducers were recorded in digital format on a multi channel Tektronix scope. The sampling frequency was 10 Mhz (10 samples per microsecond). After a period of cooling following detonation, gas samples were taken and were subsequently submitted for analysis using gas mass spectrometry. Due to a late request for post shot measurement, it was only possible to make a rough estimate of the weight of debris (carbon) remaining in the calorimeter bomb following the second experiment.

Cunningham, B

1998-10-01

164

Alpha Antihydrogen Experiment  

CERN Multimedia

ALPHA is an experiment at CERN, whose ultimate goal is to perform a precise test of CPT symmetry with trapped antihydrogen atoms. After reviewing the motivations, we discuss our recent progress toward the initial goal of stable trapping of antihydrogen, with some emphasis on particle detection techniques.

Fujiwara, M C; Ashkezari, M D; Baquero-Ruiz, M; Bertsche, W; Bray, C C; Butler, E; Cesar, C L; Chapman, S; Charlton, M; Cesar, C L; Fajans, J; Friesen, T; Gill, D R; Hangst, J S; Hardy, W N; Hayano, R S; Hayden, M E; Humphries, A J; Hydomako, R; Jonsell, S; Kurchaninov, L; Lambo, R; Madsen, N; Menary, S; Nolan, P; Olchanski, K; Olin, A; Povilus, A; Pusa, P; Robicheaux, F; Sarid, E; Silveira, D M; So, C; Storey, J W; Thompson, R I; van der Werf, D P; Wilding, D; Wurtele, J S; Yamazaki, Y

2011-01-01

165

Chlorine solar neutrino experiment  

International Nuclear Information System (INIS)

The chlorine solar neutrino experiment in the Homestake Gold Mine is described and the results obtained with the chlorine detector over the last fourteen years are summarized and discussed. Background processes producing 37Ar and the question of the constancy of the production rate of 37Ar are given special emphasis

1984-08-23

166

A Degrading Experience  

Science.gov (United States)

In this activity, learners perform an experiment to learn about how different types of marine debris degrade and how weather and sunlight affect the rate of degradation. Learners discover that debris made from natural materials, while biodegradable, can still be considered pollutants and can still harm the marine environment.

Sheavly, Seba; Reigster, Katie

2014-05-28

167

Be A Juror Experiment  

Science.gov (United States)

This is the entry page to participate in the be a juror experiment. Participants are in one of three treatment conditions (a) no eyewitness, (b) unrefuted eyewitness, and (c) discredited eyewitness. Participants in this study rate their belief about the defendant's guilt. The rating scale ranges from a 1 (definitely not guilty) to a 7 (definitely guilty).

168

FLORIDA TOWER FOOTPRINT EXPERIMENTS  

Energy Technology Data Exchange (ETDEWEB)

The Florida Footprint experiments were a series of field programs in which perfluorocarbon tracers were released in different configurations centered on a flux tower to generate a data set that can be used to test transport and dispersion models. These models are used to determine the sources of the CO{sub 2} that cause the fluxes measured at eddy covariance towers. Experiments were conducted in a managed slash pine forest, 10 km northeast of Gainesville, Florida, in 2002, 2004, and 2006 and in atmospheric conditions that ranged from well mixed, to very stable, including the transition period between convective conditions at midday to stable conditions after sun set. There were a total of 15 experiments. The characteristics of the PFTs, details of sampling and analysis methods, quality control measures, and analytical statistics including confidence limits are presented. Details of the field programs including tracer release rates, tracer source configurations, and configuration of the samplers are discussed. The result of this experiment is a high quality, well documented tracer and meteorological data set that can be used to improve and validate canopy dispersion models.

WATSON,T.B.; DIETZ, R.N.; WILKE, R.; HENDREY, G.; LEWIN, K.; NAGY, J.; LECLERC, M.

2007-01-01

169

Dismantling the ALEPH experiment  

CERN Document Server

The barrel and its two end-caps have been separated and removed from their cables; the detector will be broken into individual parts. ALEPH was an experiment on the LEP accelerator, which studied high-energy collisions between electrons and positrons from 1989 to 2000.

Patrice Loïez

2001-01-01

170

Chlorine solar neutrino experiment  

Energy Technology Data Exchange (ETDEWEB)

The chlorine solar neutrino experiment in the Homestake Gold Mine is described and the results obtained with the chlorine detector over the last fourteen years are summarized and discussed. Background processes producing /sup 37/Ar and the question of the constancy of the production rate of /sup 37/Ar are given special emphasis.

Rowley, J.K.; Cleveland, B.T.; Davis, R. Jr.

1984-01-01

171

Balloonborne Lidar Experiment.  

Science.gov (United States)

The object of this contract was to design a balloonborne lidar experiment capable of performing nightime atmospheric density measurements in the 10 to 40 km altitude domain with a resolution of 100 meters. The payload includes a frequency-tripled Nd:YAG l...

O. Shepherd G. Aurilio R. D. Bucknam R. W. Brooke A. G. Hurd

1980-01-01

172

CANDU operating experience  

International Nuclear Information System (INIS)

The CANDU Pressurized Heavy Water (CANDU-PHW) type of nuclear electric generating station has been developed jointly by Atomic Energy of Canada Limited and Ontario Hydro. This paper highlights Ontario Hydro's operating experience using the CANDU-PHW system, with a focus on the operating performance and costs, reliability of system components and nuclear safety considerations both to the workers and the public

1982-01-01

173

Invisalign: early experiences.  

Science.gov (United States)

This article describes the Invisalign technique. It is based on the author's personal experience of over 60 cases started in the private practice setting. The technology behind Invisalign and its development is reviewed. The Invisalign clinical technique is described, and the advantages and disadvantages of using Invisalign are highlighted. PMID:14634176

Joffe, L

2003-12-01

174

Gender Perception Experiment  

Science.gov (United States)

This is the entry page for participation in the gender perception experiment. Participants view photographs of faces and only the mouth and chin regions are visible. Participants are asked to identify the gender of each stimulus and to indicate their confidence in their judgment.

175

MICROWAVE EXPERIMENTS INCLUDING AVALANCHE  

Digital Repository Infrastructure Vision for European Research (DRIVER)

The principles of the most popular microwave techniques for hot electron investigations in semiconductors are briefly described and the current status of hot electron investigations with microwaves is reviewed. The emphasis is put on the experiments which make use of the specific features of microwave heating or give an extra information in addition to that obtained from d.c. measurements.

Dienys, V.; Dargys, A.

1981-01-01

176

Electronics for LHC Experiments  

Energy Technology Data Exchange (ETDEWEB)

This document gathers the abstracts of most presentations made at this workshop on electronics for the large hadron collider (LHC) experiments. The presentations were arranged into 6 sessions: 1) electronics for tracker, 2) trigger electronics, 3) detector control systems, 4) data acquisition, 5) electronics for calorimeters and electronics for muons, and 6) links, power systems, grounding and shielding, testing and quality assurance.

NONE

2004-07-01

177

Ignition experiment - alternatives  

International Nuclear Information System (INIS)

This report comprises three short papers on cost estimates, integral burn time and alternative versions of Tokamak ignition experiments. These papers were discussed at the ZEPHYR workshop with participants from IPP Garching, MIT Cambridge and PPPL Princeton (Garching July 30 - August 2 1979) (Chapters A, B, C). It is shown, that starting from a practical parameter independent minimum integral burn time of Tokamak ignition experiments (some 103 s) by adding a shield for protection of the magnet insulation (permitted neutron dose 109 rad) an integral burn time of some 104 s can be achieved for only about 30% more outlay. For a substantially longer integral burn time the outlay approaches rather quickly that for a Tokamak reactor. Some examples for alternatives to ZEPHYR are being given, including some with low or no compression. In a further chapter D some early results of evaluating an ignition experiment on the basis of the energy confinement scaling put forward by Coppi and Mazzucato are presented. As opposed to the case of the Alcator scaling used in chapters A through C the minimum integral burn time of Tokamak ignition experiments here depends on the plasma current. Provided neutral injectors up to about 160 keV are available compression boosting is not required with this scaling. The results presented have been obtained neglecting the effects of the toroidal field ripple. (orig.) 891 HT/orig. 892 RKD

1979-01-01

178

Self managing experiment resources  

Science.gov (United States)

Within this paper we present an autonomic Computing resources management system, used by LHCb for assessing the status of their Grid resources. Virtual Organizations Grids include heterogeneous resources. For example, LHC experiments very often use resources not provided by WLCG, and Cloud Computing resources will soon provide a non-negligible fraction of their computing power. The lack of standards and procedures across experiments and sites generated the appearance of multiple information systems, monitoring tools, ticket portals, etc... which nowadays coexist and represent a very precious source of information for running HEP experiments Computing systems as well as sites. These two facts lead to many particular solutions for a general problem: managing the experiment resources. In this paper we present how LHCb, via the DIRAC interware, addressed such issues. With a renewed Central Information Schema hosting all resources metadata and a Status System (Resource Status System) delivering real time information, the system controls the resources topology, independently of the resource types. The Resource Status System applies data mining techniques against all possible information sources available and assesses the status changes, that are then propagated to the topology description. Obviously, giving full control to such an automated system is not risk-free. Therefore, in order to minimise the probability of misbehavior, a battery of tests has been developed in order to certify the correctness of its assessments. We will demonstrate the performance and efficiency of such a system in terms of cost reduction and reliability.

Stagni, F.; Ubeda, M.; Tsaregorodtsev, A.; Romanovskiy, V.; Roiser, S.; Charpentier, P.; Graciani, R.

2014-06-01

179

The Huck Finn Experience.  

Science.gov (United States)

This paper describes "The Huck Finn Experience," a high motivation interdisciplinary unit that takes students on a 6-week journey back to the life and times of Mark Twain through the fictional character of Huckleberry Finn. The unit described in the paper was designed for eighth-grade students but could be easily adapted to be successful with…

Levesque, Bonnie; And Others

180

Reconstructing Playschool Experiences  

Science.gov (United States)

The current study was conducted with groups of first grade children (aged six years) in two primary schools in Reykjavik in an endeavour to ascertain how they recalled and reconstructed their playschool experiences. The children's playschool teachers were co-researchers participating in the data generation; they were, at the same time participants…

Einarsdottir, Johanna

2011-01-01

 
 
 
 
181

Word Recognition Experiment  

Science.gov (United States)

This is the entry page for participating in the Word Recognition Experiment. This study involves a series of word recognition trials in which participants are flashed a word either in the left or in the right hemifield and then identify the presented word. Performance is measured as the minimum presentation display time required for an individual to correctly identify the word.

182

Experiments in ESP.  

Science.gov (United States)

Discusses a phenomenon called Extrasensory Perception (ESP) whereby information is gained directly by the mind without the use of the ordinary senses. Experiments in ESP and the basic equipment and methods are presented. Statistical evaluation of ESP experimental results are also included. (HM)

Guerin, Stephen M.; Guerin, Clark L.

1979-01-01

183

Electronics for LHC Experiments  

International Nuclear Information System (INIS)

This document gathers the abstracts of most presentations made at this workshop on electronics for the large hadron collider (LHC) experiments. The presentations were arranged into 6 sessions: 1) electronics for tracker, 2) trigger electronics, 3) detector control systems, 4) data acquisition, 5) electronics for calorimeters and electronics for muons, and 6) links, power systems, grounding and shielding, testing and quality assurance

2002-09-09

184

Direct photon experiments  

International Nuclear Information System (INIS)

The author reviews the experiments on direct photon production in hadronic collisions. After a description of the experimental methods for the study of such processes he presents some results on differential cross sections and the ?/?"0 ratio in ?"-p, ?"+p, pp, and anti pp processes as well as in reactions of ?"-, ?"+, and p on carbon. (HSI)

1986-09-03

185

Implicit Association Experiment  

Science.gov (United States)

This is the entry page for participation in the Implicit Association Experiment. Greenwald, McGhee and Schwartz (1998) pioneered the use of implicit association tests. Implicit association tests (IATs) measure the relative ease with which people are able to make associations between certain groups of people (e.g., older adults) and the concepts of "good" and "bad."

186

Cyclic Voltammetry Experiment.  

Science.gov (United States)

Describes a three-part experiment designed to introduce cyclic voltammetry to graduate/undergraduate students. Part 1 demonstrates formal reduction potential, redox electron transfer, diffusion coefficient, and electrochemical reversibility. Part 2 investigates electrochemical behavior of acetaminophen. Part 3 examines such experimental variables…

Van Benschoten, James J.; And Others

1983-01-01

187

The Doppler Pendulum Experiment  

Science.gov (United States)

An experiment to verify the Doppler effect of sound waves is described. An ultrasonic source is mounted at the end of a simple pendulum. As the pendulum swings, the rapid change of frequency can be recorded by a stationary receiver using a simple frequency-to-voltage converter. The experimental results are in close agreement with the Doppler…

Lee, C. K.; Wong, H. K.

2011-01-01

188

Overview of CHS experiments  

International Nuclear Information System (INIS)

Recent experimental results are summarized. One of them is the bifurcation phenomenon of the electric potential which manifests itself in various aspects of CHS plasmas. Here, electrons heated with ECH play an essential role. The CHS will be operated, after being moved to the Toki site, so as to perform complementary experiments to LHD. (author)

2000-11-01

189

The Experience of Menarche.  

Science.gov (United States)

Examines reactions to menarche and the subsequent effects of this experience as a function of preparation for and timing of menarche. A questionnaire including measures of responses about first menstruation, current symptoms, and self-image was completed by 639 girls in fifth through twelfth grades. (Author/MP)

Ruble, Diane N.; Brooks-Gunn, Jeanne

1982-01-01

190

Lidar calibration experiments  

DEFF Research Database (Denmark)

A series of atmospheric aerosol diffusion experiments combined with lidar detection was conducted to evaluate and calibrate an existing retrieval algorithm for aerosol backscatter lidar systems. The calibration experiments made use of two (almost) identical mini-lidar systems for aerosol cloud detection to test the reproducibility and uncertainty of lidars. Lidar data were obtained from both single-ended and double-ended Lidar configurations. A backstop was introduced in one of the experiments and a new method was developed where information obtained from the backstop can be used in the inversion algorithm. Independent in-situ aerosol plume concentrations were obtained from a simultaneous tracer gas experiment with SF6, and comparisons with the two lidars were made. The study shows that the reproducibility of the lidars is within 15%, including measurements from both sides of a plume. The correspondence with in-situ measurements is excellent. Finally, the new backstop method is able to reveal information which can close the lidar equation by obtaining the relation between backscatter and extinction in an aerosol cloud.

Ejsing Jørgensen, Hans; Mikkelsen, T.

1997-01-01

191

Experiments in quantum gravity  

International Nuclear Information System (INIS)

Experiments in quantum gravity show that Einstein's theory of general relativity is incomplete by a gravitational field stress-energy term in the field equations. The field stress-energy term needed for completion is explicitly given in the case of static fields

1980-01-01

192

Experiments on ferrimagnetism  

International Nuclear Information System (INIS)

Ferrimagnetism undoubtedly deserves a proper place in the undergraduate laboratory on electricity and magnetism. Four student experiments on ferrimagnetism are considered: (i) the hysteresis loops and permeability of a ‘soft’ ferrite; (ii) the differential permeability versus a dc bias; (iii) the frequency dependence of the complex permeability and (iv) the electromagnetic interference suppression by ferrite chokes and beads. Two ferrite cores taken off a low-frequency choke and a power cord are used. The measurements are simple and straightforward and show the important properties of ferrites and their applications. The values of the permeability of the ferrite core determined in experiments (i)–(iii) are in reasonable agreement. The frequency dependence of the complex permeability of the ferrites is similar to that given by the manufacturers. The capability of absorbing electromagnetic waves in a definite frequency range shown in experiment (iv) demonstrates one of the principles of Stealth technology. The equipment necessary for the experiments can be found in many student laboratories. (paper)

2013-03-01

193

4? experiments with MEDEA  

International Nuclear Information System (INIS)

Some experimental research performed by the MEDEA collaboration are presented, among which the issue of impact parameter filtering of nuclear reactions, the timescale of hard photon and fast proton production and phase coexistence in multifragment emission. Results of an experiment at the LNS Superconducting Cyclotron facility and an interpretation in terms of nuclear liquid-vapor coexistence are reported. (authors)

1996-10-07

194

[The AMY experiment  

International Nuclear Information System (INIS)

The AMY experiment is one of three major experiments at TRISTAN which is studying the states the matter produced in electron positron annihilations in the center of mass energy range of 50--65GeV. It provides information between the lower energy facilities such as PEP and PETRA and the new facilities SLC and LEP which are designed to operate in the region of the Z0 mass near 90GeV. In the region of the AMY experiment, interaction cross sections are near their minimum of about 100pb, making it difficult to acquire large data samples during typical running cycles. This last year has seen an accumulation of about 10---12pb-1 of integrated luminosity in the energy range from 58 to 61.7GeV. Despite this limited data sample, the AMY experiment has been extremely active in attempting to extract the minimum amount of information from the data. Some of the most significant results are discussed in this paper. 9 refs

1989-01-01

195

Winfrith SGHWR operations experience  

International Nuclear Information System (INIS)

The Winfrith Steam Generating Heavy Water Reactor which is owned and operated by the United Kingdom Atomic Energy Authority has a nominal gross electrical output of 100 MW(e) and has been in operation since 1968. The paper contains a review of plant topics of general interest covering the 18 year period of operation, extending information previously published. Overall the operating experience with the plant has been very favourable and the plant reliability has been good. Naturally some of the experience of general interest centres around difficulties that have arisen on plant and this is reflected in the content of the paper. Recent experience with the main coolant circuits and pressure tubes is summarised. There have been no general problems from stress corrosion or other forms of attack on the main coolant circuit pipework or welds and the 321 Type stainless steel has generally proved to be satisfactory under the imposed conditions which are typical of BWR chemistry. The Zircaloy pressure tubes have all been satisfactorily inspected in service and one pressure tube was replaced in 1985 for materials tests on the irradiated tube. Some preliminary test data is included in the paper and it is expected that the latest information will be reported at the meeting. The fuel element reliability has continued to be very good with only one standard fuel element experiencing clad defects in the operating period since 1976. Regular chemical decontaminations of the reactor coolant circuits continue, having been initiated in 1969, as part of a programme to reduce radiation dose to personnel. New reagents, recently introduced, have been successful in continuing a downward trend in dose rates. Experience with the saturated steam turbine plant is also summarised. Operation of the reactor continues to demonstrate the potential of the pressure tube reactor and to produce information and experience of relevance to water reactors in general. (author)

1986-01-01

196

Transformations of emotional experience.  

Science.gov (United States)

In this paper the author approaches mental pain and the problems in a psychoanalytic treatment of patients with difficulties in the psychic transformation of their emotional experiences. The author is interested in the symbolic failure related to the obstruction of development of phantasies, dreams, dream-thoughts, etc. She differentiates symbolization disturbances related to hypertrophic projective identification from a detention of these primitive communications and emotional isolation. She puts forward the conjecture that one factor in the arrest of this development is the detention of projective identifications and that, when this primitive means of communication is re-established in a container-contained relationship of mutual benefit, this initiates the development of a symbolization process that can replace the pathological 'protection'. Another hypothesis she develops is that of inaccessible caesuras that, associated with the detention of projective identification, obstruct any integrative or interactive movement. This caesura and the detention of projective identifications affect mental functions needed for dealing with mental pain. The personality is left with precarious mental equipment for transforming emotional experiences. How can a psychoanalytical process stimulate the development of creative symbolization, transforming the emotional experiences and leading towards mental growth? The author approaches the clinical problem with the metaphor of the psychic birth of emotional experience. The modulation of mental pain in a container-contained relationship is a central problem for the development of the human mind. For discovering and giving a meaning to emotional experience, the infant depends on reverie, a function necessary in order to develop an evolved consciousness capable of being aware, which is different from the rudimentary consciousness that perceives but does not understand. The development of mature mental equipment is associated with the personality's attitude towards mental pain. The differentiation between psychotic, neurotic or autistic functioning depends on what defences are erected to avoid mental pain. The primary link between infant and mother is where the building of mental equipment takes place, through communicational forms that, to begin with, are not verbal. The author suggests the need for the development of an ideo-grammar (in gestures, paralinguistic forms, etc.) in primary relations, as the precursor forms that will become the matrix for the mental tools for dealing with emotional experiences in a mature way. The paper stresses the significance of the parental containing function for the development of symbolization of prenatal emotional experiences. This containment develops ideograms, transformations of sense impressions into proto-symbols, instruments that attenuate the traumatic experiences of helplessness. The author takes Bion's ideas about extending the notion of dream-work to an alpha function that goes on continually, day and night, transforming raw emotional experiences in a 'dream'. In order to acquire a meaning, facts need to be 'dreamed' in this extended sense. Meaning and truth are the nurture of the mind. Mental growth, the development of adequate tools--including reverie--for dealing with mental pain, seen from a psychoanalytic perspective including reverie, implies that the object becomes a provider of meanings. Analysis begins to aim primarily at the generation or expansion of the mental container, instead of predominantly working on unconscious contents as such. PMID:23781834

de Cortiñas, Lia Pistiner

2013-06-01

197

Operating experience with snubbers  

International Nuclear Information System (INIS)

Recent operating experience with hydraulic and mechanical snubbers has indicated that there is a need to evaluate current practice in the industry associated with snubber qualification testing programs, design and analysis procedures, selection and specification criteria, and the preservice inspection and inservice surveillance programs. The report provides a summary of operational experiences that represent problems that are generic throughout the industry. Generic Task A-13 is part of the NRC Program for the Resolution of Generic Issues Related to Nuclear Power Plants described in NUREG-0410. The report is based upon a rather large amount of data that have become available in the past four years. These data have been evaluated by the Division of Operating Reactors to develop a data base for use in connection with several NRC activities including Category A, Technical Activity A-13 (Snubbers); the Standard Review Plan; future Regulatory Guides; ASME Code Provisions; and various technical specifications of operating nuclear power plants

1978-01-01

198

The GLORIA demonstrator experiment  

Science.gov (United States)

GLORIA stands for "GLObal Robotic-telescopes Intelligent Array" and it is the first free and open-access network of robotic telescopes on the world. Based on a Web 2.0 environment amateur and professional users can do research in astronomy by observing with robotic telescopes, and/or analyzing data acquired with GLORIA, or from other free access databases. GLORIA project develops free standards, protocols and tools for controlling Robotic Telescopes and related instrumentation, for scheduling observations in the telescope network, and for conducting so-called off-line experiments based on the analysis of astronomical data. This contribution summarizes the implementation and results from the first research level off-line demonstrator experiment implemented in GLORIA, which was base on the data collected with the "Pi of the Sky" telescope in Chile.

Majcher, A.; ?wiek, A.; ?wiok, M.; Mankiewicz, L.; Zaremba, M.; ?arnecki, A. F.

2013-10-01

199

Improving the patient's experience  

Directory of Open Access Journals (Sweden)

Full Text Available When arriving at the eye care unit, patients often feel unsure of what is going to happen, anxious, and vulnerable. Many have never found themselves in a hospital setting before or have never travelled or slept away from home.It is an integral part of eye care to make sure a patient's experience is a positive one. This article offers suggestions for good, evidence-based, practice to improve this experience.Our suggestions should necessarily be adapted to local context: resource-poor settings are particularly challenging work environments and staff may need to display more ingenuity in working towards good practice, when striving to achieve the goals of VISION 2020.

C Patricia Fathers

2008-12-01

200

Microwave Tokamak Experiment  

International Nuclear Information System (INIS)

The Microwave Tokamak Experiment, now under construction at the Laboratory, will use microwave heating from a free-electron laser. The intense microwave pulses will be injected into the tokamak to realize several goals, including a demonstration of the effects of localized heat deposition within magnetically confined plasma, a better understanding of energy confinement in tokamaks, and use of the new free-electron laser technology for plasma heating. The experiment, soon to be operational, provides an opportunity to study dense plasmas heated by powers unprecedented in the electron-cyclotron frequency range required by the especially high magnetic fields used with the MTX and needed for reactors. 1 references, 5 figures, 3 tables

1988-05-01

 
 
 
 
201

The MOZART experiment  

International Nuclear Information System (INIS)

The MOZART experiment was carried out within the framework of the BEATRIX program, as part of the Commissariat a l'Energie Atomique contribution to this international collaboration program. This experiment was run during 45 days in the MELUSIN reactor at Grenoble. Tested ceramics were Li2O and LiAlO2 from Japan, Li2ZrO3 from USA, LiAlO2 from CEA. Influence of parameters such as temperature, sweep gas composition was investigated. Tritium residence times as a function of temperature were calculated. The comparison of the tritium release performance of the three ceramic breeders was made. This investigation has first evidenced the very good tritium release characteristics of Li2ZrO3 especially at low temperatures. (author). 7 refs.; 5 figs.; 3 tabs

1989-01-01

202

Antimatter gravity experiment  

International Nuclear Information System (INIS)

An experiment is being developed to measure the acceleration of the antiproton in the gravitational field of the earth. Antiprotons of a few MeV from the LEAR facility at CERN will be slowed, captured, cooled to a temperature of about 10 K, and subsequently launched a few at a time into a drift tube where the effect of gravity on their motion will be determined by a time-of-flight method. Development of the experiment is proceeding at Los Alamos using normal matter. The fabrication of a drift tube that will produce a region of space in which gravity is the dominant force on moving ions is of major difficulty. This involves a study of methods of minimizing the electric fields produced by spatially varying work functions on conducting surfaces. Progress in a number of areas is described, with stress on the drift-tube development

1990-11-05

203

Jovian electrodynamic tether experiment  

Science.gov (United States)

A case is made for an electrodynamic tether scientific platform to be put into orbit around Jupiter as a follow-on to the present series of earth-based Tethered Satellite System (TSS) experiments. Preliminary system trades are made to bound the amount of power (assuming 100 percent plasma contactor efficiency) that can be obtained from the orbiting Jovian tether. With magnetic field strengths of roughly 4 to 7 Gauss, power levels of the order of 100 kilowatts can be obtained with a thin 500 km long tether. This should suffice to power a Jovian scientific experiment package. The electrodynamic tether also affords a loitering capability as it can be operated as a thruster in addition to a power generator. Further study and research is needed to characterize the Jovian tether as to its electrodynamic and dynamic performance potential. Hollow cathode plasma contactor operation needs to be verified in near earth space.

Hammond, Walter E.; Freeman, Scott E.; Nave, Mark J.; Rupp, Charles C.

1991-01-01

204

Cross-Language Experiment  

Directory of Open Access Journals (Sweden)

Full Text Available The contribution addresses the cross-language experiment. The aimwas to test the possibility of the conversion French phoneme modelsinto Czech ones. This model conversion uses the Hidden Markov Models(HMM classification procedure. The first step consists of theiterative mapping of French models to Czech ones. The mapping is givenby the analysis the confusion matrix. The second step is the Baum-Welchre-estimation resulting in the final models for Czech language. Despiteof the differences between French and Czech languages the finalrecognition score reaches 64% for the phoneme recognition and 74% fordigit recognition. Relatively low recognition accuracy is caused by theinadequate noise model. The experiences gained with the cross-languageexperiment were utilized for the classification of simple human bodymovements. The solution of this problem and results are described inthe second part of this contribution under the title EEG SignalsClassification-Introduction to the Problem.

P. Sovka

2003-09-01

205

Fast critical experiments  

International Nuclear Information System (INIS)

A review of fast-neutron critical experiments is presented. The history of the assemblies falls into three overlapping phases. The first, beginning in 1948, relates to simple, compact metal assemblies with extremely high-energy neutron spectra. Examples given of this type of assembly, with critical specifications, spectral indexes, and reactivity calibration are LADY GODIVA, FLATTOP, JEZEBEL and U(16). Details are also given for early experiments with TOPSY. The second phase, starting 6 years later, covers larger, more diffuse assemblies that are still simply describable because of uniform core and reflector regions. Descriptions, spectral indices and reactivity coefficients are given for Big Ten, ZPR-3, ZPR-6, VERA, FR0, ZEBRA and SNEAK assemblies. These two categories encompass the so-called benchmark assemblies. The final phase, not discussed, started in 1955 and applies to engineering mock-ups of fast reactors. (U.K.)

1981-01-01

206

The deconstructive experience.  

Science.gov (United States)

Logocentrism was conceptualized by Jacques Derrida as connoting the assertion within Western philosophical traditions of certain assumed truths and the exclusion of alternative perspectives. In this paper, the author proposes that the concept of logocentrism may be usefully applied within the clinical situation to enrich understanding of splitting between idealized and devalued perceptions of self and others. He presents a case of a woman with borderline personality disorder to illustrate a logocentric self-structure, as well as how common psychotherapeutic models inadvertently risk reinforcing such structures through the hierarchical nature of the patient-therapist relationship. The process of deconstructing logocentric self-structures is facilitated by the patient experiencing the therapist paradoxically as an extension of the self that sometimes behaves contrary to expectations. Such a deconstructive experience challenges reified perceptions of self and others, serves to broaden the experience of self, and enhances qualities of self-reflection and empathy. PMID:16555459

Gregory, Robert J

2005-01-01

207

New Experiments with Antiprotons  

Science.gov (United States)

Fermilab operates the world's most intense antiproton source. Recently proposed experiments can use those antiprotons either parasitically during Teva-tron Collider running or after the Tevatron Collider finishes in about 2011. For example, the annihilation of 8 GeV antiprotons might make the world's most intense source of tagged D0 mesons, and thus the best near-term opportunity to study charm mixing and search for new physics via its CP-violation signature. Other possible precision measurements include properties of the X(3872) and the charmonium system. An experiment using a Penning trap and an atom interferometer could make the world's first measurement of the gravitational force on antimatter. These and other potential measurements using antiprotons could yield a broad physics program at Fermilab in the post-Tevatron era.

Kaplan, D. M.

2011-12-01

208

THE SCHOOL CLIMATE EXPERIENCES  

Directory of Open Access Journals (Sweden)

Full Text Available This paper analyses the quality of the school climate. One of its objectives isto define such basic terms as environment, atmosphere, climate, and selected climatevariants, above all the school climate. Attention is also paid to the following five areasof school life, which are in my opinion of significance: 1 the overall attitude to schooland the motivation to study 2 teachers` qualities and competences 3 school rules andthe discipline in class 4 the solidarity of the class as a social group 5 thearchitectural, aesthetic and hygienic aspects of the school. The thesis also wants topresent new practical methods supported by long experience of the school climategained abroad and even by similar experience lately picked up in the Czech republic.

JANA KANTOROVÁ

2011-01-01

209

BIOPAN -- Flight experiment ''CARD''  

International Nuclear Information System (INIS)

As part of the BIOPAN-0 test flight payload, ESA/ESTEC together with University of Siegen, designed an experiment called CARD, for flight on the first BIOPAN model. The CARD experiment, consisting of commercially available 128K-bit EEPROM cards and CR-39 plastic nuclear track detector foils, was flown in order to assess the EEPROMs sensitivity to cosmic rays and the CR-39 foils to measure the cosmic rays seen during the mission. The EEPROMs were unbiased during the flight so only the charged content of the memories could be assessed after returning to earth. This paper presents the results from a 15.6 day flight on-board the Russian Photon-8 satellite, launched October the 8th 1992 (altitude 300 km, inclination 62.8 degree), and gives details of the ground testing and analyses performed

1994-12-01

210

Review of CHS experiments  

International Nuclear Information System (INIS)

Review of recent experimental efforts is presented on CHS plasma with the low aspect ratio. MHD characteristics is discussed from viewpoint of Shafranov shift, where NBI beam pressure plays an important role in the equilibrium pressure at the low density of 13cm-3. Compensation of large Shafranov shift by the pre-programmed vertical field control is shown to be effective to obtain high ? plasma in the low Ap configuration. Local transport analysis has been extensively done for NBI and ECH plasmas. Effect of the radial electric field and the magnetic well on the transport is discussed. Dependence of the NBI deposited power on the magnetic axis position is also discussed. Recent experiments include perturbation field effect on the transport, and damping mechanism of the toroidal plasma rotation, which are interesting from helical plasma physics. Preliminary ICRF heating experiment gives a promising result. (author). 8 refs, 7 figs

1991-07-01

211

Commissioning the CMS experiment  

CERN Document Server

The CMS experiment is getting ready to take data at the LHC accelerator at CERN. Due to late delivery of the experimental caverns the detector had to be pre-assembled on the surface and lowered in large segments. This has constrained the commissioning strategy of the experiment. Global commissioning has started in Spring of 2007 and has progressed in parallel with the construction and assembly of detector and services underground. This paper describes the strategy adopted in order to commission components of the system in incremental steps in order to be ready to accept collisions from LHC with a well debugged and understood system, including the detector, acquisition system, trigger, software, computing and data shipping.

Camporesi, T.

2008-01-01

212

Gross decontamination experiment report  

Energy Technology Data Exchange (ETDEWEB)

A Gross Decontamination Experiment was conducted on various levels and surfaces of the TMI - Unit 2 reactor building in March 1982. The polar crane, D-rings, missile shields, refueling canals, refueling bridges, equipment, and elevations 305' and 347'-6'' were flushed with low pressure water. Additionally, floor surfaces on elevation 305' and floor surfaces and major pieces of equipment on elevation 347'-6'' were sprayed with high pressure water. Selective surfaces were decontaminated with a mechanical scrubber and chemicals. Strippable coating was tested and evaluated on equipment and floor surfaces. The effectiveness, efficiency, and safety of several decontamination techniques were established for the large, complex decontamination effort. Various decontamination equipment was evaluated and its effectiveness was documented. Decontamination training and procedures were documented and evaluated, as were the support system and organization for the experiment.

Mason, R.; Kinney, K.; Dettorre, J.; Gilbert, V.

1983-07-01

213

PPT experiments in JINR  

International Nuclear Information System (INIS)

A review is given of experiments with the polarized proton target in the Laboratory Nuclear Problems at JINR Dubna. The experiments were carried out using the accelerators in Dubna, Gatchina and Serpukhov in 1970-1985. The mathematical formalism of NN and ?N scattering is explained. Described are the measurements of CNN in pp elastic scattering at 590-950 MeV, depolarization in pp and np elastic scattering at 600-650 MeV, polarization and R parameter in ?p, Kp, pp and anti-p p elastic scattering at 40 GeV/c and polarization in the charge exchange scattering at 40 GeV/c. (Z.J.)

1985-09-02

214

CANDU operating experience  

International Nuclear Information System (INIS)

The CANDU Pressurized Heavy Water (CANDU-PHW) type of nuclear-electric generating station has been developed jointly by Atomic Energy of Canada Limited and Ontario Hydro. This paper highlights Ontario Hydro's operating experience using the CANDU-PHW system, with a focus on the operating performance and costs, reliability of system components and nuclear safety considerations both to the workers and the public

1982-04-07

215

First experiments with POWERPLAY  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Like a scientist or a playing child, POWERPLAY (Schmidhuber, 2011) not only learns new skills to solve given problems, but also invents new interesting problems by itself. By design, it continually comes up with the fastest to find, initially novel, but eventually solvable tasks. It also continually simplifies or compresses or speeds up solutions to previous tasks. Here we describe first experiments with POWERPLAY. A self-delimiting recurrent neural network SLIM RNN (Schmidhuber, 2012) is use...

2013-01-01

216

The NASA Experience  

Science.gov (United States)

Projects assigned to: (1) Testing, fixing, and procuring enclosure systems and components for Kennedy Ground Controls Systems at launch pad B. (2) Organizational spreadsheets for all subsystems involved in the project. (Procurement, parts lists, drawings, purchase requests, etc) (3) Resolve is a project devoted to the lunar rover that will sample lunar soil in an effort to remove the moister and separate the metal from the oxygen to produce drinkable water. I helped with the humidity environmental generator for the experiment (moister detector).

Ramos, Alberto

2011-01-01

217

Pitch Memory Experiment  

Science.gov (United States)

This is the entry page for the Pitch Memory Experiment. The pitch memory task is patterned after Deutsch (1979). On each trial, a target tone and a test tone are presented with five distracter tones between them. Participants will be asked to judge whether the target and test tones are the same or different. There are 38 trials when the tones are the same and 38 when they are different.

218

Nesiritide: The clinical experience  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Nesiritide is an effective therapy in decreasing symptoms and left ventricular filling pressure in patients with acute decompensated heart failure. Health Canada has recently approved this agent for the management of this patient population. The clinical trials to date using nesiritide for the management of decompensated heart failure have been summarized. The clinical experience including indications for use, contraindications, dosage and monitoring has been reviewed. The following should se...

Weeks, Sarah G.

2008-01-01

219

NPB cesium space experiment  

Science.gov (United States)

Neutral Particle Beam (NPB) weapons systems are planned to perform the ballistic missile defense functions of nuclear weapon/decoy discrimination and warhead kill at appropriate energy levels and ion currents. Negatively charged ions are produced in a specialized ion source and focused into a high quality particle beam. NPB linear accelerators accelerate and steer the negatively charged ions using electric and magnetic fields. After acceleration and steering the neutralizer system strips away extra electrons from ions to form the electrically neutral particle beam. The neutral beam then travels through space to the target unaffected by the Earth's magnetic fields. Continuing technological advances have greatly reduced the size and weight of NPB accelerator systems. Ion current production has been enhanced by over 100 percent with the intermittent addition of cesium at the NPB ion source device. This increase in current is essential to attain the most light weight, compact NPB platforms and minimize expensive launch costs. Addition of cesium into the ion source has been identified by the NPB community as the highest priority risk reduction space experiment necessary prior to planned NPB accelerator experiments and later weapons systems. The NPB Cesium Space Experiment is planned to successfully demonstrate controlled cesium introduction and vaporization into a simulated ion source chamber. Microgravity effects on the cesium deposition will be studied as will the effects of small amounts of cesium on high voltage accelerator components that might be susceptible to electrical insulator break downs. The experiment design will simulate as closely as possible the environment, physical and operational characteristics of the actual NPB ion source.

Parsons, George M., III

1992-01-01

220

LLNL experience with HIPPI  

Energy Technology Data Exchange (ETDEWEB)

The High Performance Switching System Program (HPSS) at the Lawrence Livermore National Laboratory is in the process of implementing a gigabit Local Area Network featuring cross bar switches that interface to HIPPI, VME, and NuBus adapters. This paper presents a brief review of the design of the HPSS network, discusses our experiences with using HIPPI as an interconnect in a Local Area Network and describes our efforts to achieve maximum performance from our Model C and D IOS Cray systems.

Getchell, D.

1991-10-01

 
 
 
 
221

The MUNU experiment  

International Nuclear Information System (INIS)

We intend to build a low background detector based on a gas TPC to be installed near a nuclear reactor in Bugey for the experimental study of anti?ee- scattering. The threshold on the electron recoil energy can be set very low, around 500 keV, giving the experiment a good sensitivity to the magnetic moment of the anti?e, extending down to 2-3.10-11 Bohr magnetons. (authors). 14 refs

1993-02-06

222

The CLEAR Experiment  

Digital Repository Infrastructure Vision for European Research (DRIVER)

The Spallation Neutron Source in Oak Ridge, Tennessee, is designed to produce intense pulsed neutrons for various science and engineering applications. Copious neutrinos are a free by-product. When it reaches full power, the SNS will be the world's brightest source of neutrinos in the few tens of MeV range. The proposed CLEAR (Coherent Low Energy A (Nuclear) Recoils) experiment will measure coherent elastic neutral current neutrino-nucleus scattering at the SNS. The physics ...

Scholberg, K.; Wongjirad, T.; Hungerford, E.; Empl, A.; Markoff, D.; Mueller, P.; Efremenko, Y.; Mckinsey, D.; Nikkel, J.

2009-01-01

223

DIRAC experiment at CERN  

Directory of Open Access Journals (Sweden)

Full Text Available The precise measurements of ?+?- and ?K atom lifetime allow to check the predictions of Chiral Perturbation Theory for the pion-pion s-wave scattering lengths with isospin 0 and 2 and for the pion-kaon scattering lengths with isospin 1/2 and 3/2. The DIRAC experiment with the latest results is presented together with the proposal for future investigations.

Benelli Angela

2012-12-01

224

RHINOSPORIDIOSIS OUR EXPERIENCE  

Digital Repository Infrastructure Vision for European Research (DRIVER)

This article discusses the personal experience of author in the management of rhinosporidiosis.Living in an endemic area of disease the author had the privilege of managing about 200 cases of rhinosporidiosis during 2005 to 2010. Commonest area of involvement happened to be nasal cavity.Inside the nasal cavity rhinosporidiosis was commonly seen arising from inferior meatus. All these patients gave history of bathing in ponds which could account for the common etiopathogenic factor. All the ca...

2011-01-01

225

Experience and Sociology  

Digital Repository Infrastructure Vision for European Research (DRIVER)

In preparation for this conference I thought I'd read again C Wright Mills' The Sociological Imagination. Clearly there's a lot in that book about the pitfalls that sociologists face as they bounce about between the fetishisation of the concept on the one hand, and methodological inhibition and pretension on the other. There's much discussion, for example, of the 'unreality' of 'grand theory' which 'neither enlarge[s] our understanding nor make[s] our experience more sensible'; and of the ina...

Motamedi-fraser, Mariam

2007-01-01

226

The COMPASS experiment  

CERN Multimedia

Artistic view of the 60 m long Common Muon and Proton Apparatus for Structure and Spectroscopy (COMPASS) experiment. COMPASS takes beams from the SPS accelerator at CERN. This beam enters from the lower left and passes through the cylindrical target solenoid. COMPASS is used to study the internal structure of hadrons (composite particles interacting via the strong force) by looking at a property called spin and a phenomenon known as glueballs.

2006-01-01

227

Experiments in space: Summary  

Science.gov (United States)

The study of cosmic and gamma-rays has a long history and was at the beginning of what we now call Particle Physics. During the last years a growing number of particle physicists is turning again to Cosmic rays bringing all the latest techniques developed at the big accelerator experiments and making CR physics again one of the most stimulating and active field in the study of fundamental physics as the presentations during this conference demonstrate.

Morselli, Aldo

2014-04-01

228

The SAMPLE experiment  

International Nuclear Information System (INIS)

The neutral weak magnetic form factor of the nucleon can be studied in parity-violating electron-nucleon scattering. The measurement of this form factor enables determination of the contribution of strange quark-antiquark to the proton's magnetic moment. We have recently obtained the first results on the neutral weak magnetic form factor using this method in the SAMPLE experiment at MIT/Bates

1997-05-20

229

Migration experiments in Studsvik  

International Nuclear Information System (INIS)

Field experiments (two-well pulse method) on the migration of Sr and Cs in a gneiss at Studsvik on the Swedish east coast as well as supporting laboratory measurements on sorption/migration have been performed. Interconnected fractures at about 100 m depth between boreholes were located and characterized. In the boreholes measurements of resistivity, spontaneous potential, pH, Eh, curvature, temperature, gamma radiation, and radon have been performed. The fracture zones were localized, using TV-logging, and the mineralogy of the water bearing fractures in a drill core from the area determined. The main fissure filling minerals were chlorite, calcite and smectite. The groundwater composition was analyzed and it was found that the water in some cases is oversaturated with respect to calcium carbonate. Temperatures up to 12 degreeC of the pumped water have been observed, corresponding to water originating from 200-400 m depth. In laboratory batch measurements it was found that the distribution coefficient for Studsvik gneiss and possible fissure filling minerals was 0.01-0.4 m"3/kg. The sorption isotherm for the gneiss was almost linear, a Freundlich isotherm with the exponent 0.89 fits well to the data. In two field experiments, performed between different boreholes, retention factors for Sr of 17 and 30, respectively, were obtained. In laboratory column experiments, performed on crushed borehole material, the retention factor was 30-35, corresponding to a distribution coefficient of 0.006-0.008 m"3/kg. For Cs, injected simultanously with the Sr, the retentionfactor is > 30. (No breakthrough after 5000 h.). In both the field experiments a minor amount of the Sr was migrating almost without retention (retention factor < 2). This effect was not observed for Cs, indicating that the process causing the fast transport of Sr is selective to Sr. (author)

1983-01-01

230

STELLA Experiment - Microbunch Diagnostic  

Energy Technology Data Exchange (ETDEWEB)

A microbunch diagnostic system is built at the Accelerator Test Facility (ATF) of Brookhaven National Laboratory for monitoring microbunches (10-fs bunch length) produced by the Inverse Free Electron Laser accelerator in Staged Electron Laser Acceleration experiment. It is similar to one already demonstrated at the ATF. With greatly improved beam optics conditions higher order harmonic coherent transition radiation will be measurable to determine the microbunch length and shape.

He, P.; Liu, Y.; Cline, D. B.; Babzien, M.; Gallardo, J. C.; Kusche, K. P.; Pogorelsky, I. V.; Skaritka, J.; van Steenbergen, A.; Yakimenko, V.; Kimura, W. D.

1998-07-01

231

CANDU operating experience  

International Nuclear Information System (INIS)

The CANDU (CANada Deuterium Uranium) Pressurized Heavy Water (PHW) type of nuclear-electric generating station was developed jointly by Atomic Energy of Canada Limited and Ontario Hydro. This paper summarizes Ontario Hydro's operating experience using the CANDU-PHW system, with a focus on the operating performance and costs, reliability of system components, and nuclear safety considerations to both the workers and the public

1982-09-17

232

The Vinca dosimetry experiment  

International Nuclear Information System (INIS)

On 15 October 1958 there occurred a very brief uncontrolled run of the zero-power reactor at the Boris Kidric Institute of Nuclear Science, Vinca, near Belgrade, Yugoslavia. During this run six persons received various doses of radiation. They were subsequently given medical treatment of a novel kind at the Curie Hospital, Paris. In atomic energy operations to date, very few accidents involving excessive radiation exposure to human beings have occurred. In fact, the cases of acute radiation injury are limited to about 30 known high exposures, few of which were in the lethal or near-lethal range. Since direct experiment to determine the effects of ionizing radiation on man is unacceptable, information on these effects has to be based on a consideration of data relating to accidental exposures, viewed in the light of the much more extensive data obtained from experiments on animals. Therefore, any direct information on the effects of radiation on humans is very valuable. The international dosimetry project described in this report was carried out at Vinca, Yugoslavia, under the auspices of the International Atomic Energy Agency to determine the precise amount of radiation to which the persons had been exposed during the accident. These dosimetry data, together with the record of the carefully observed clinical effects, are of importance both for the scientific study of radiation effects on man and for the development of methods of therapy. The experiment and measurements were carried out at the end of April 1960. The project formed part of the Agency's research programme in the field of health and safety. The results of the experiment are made available through this report to all Member States

1958-10-15

233

Gravitation Astrometric Measurement Experiment  

CERN Multimedia

The Gravitation Astrometric Measurement Experiment (GAME) is a mission concept based on astronomical techniques (astrometry and coronagraphy) for Fundamental Physics measurements, namely the \\gamma\\ and \\beta\\ parameters of the Parametrized Post-Newtonian formulation of gravitation theories extending the General Relativity. The science case also addresses cosmology, extra-solar planets, Solar system objects and fundamental stellar parameters. The mission concept is described, including the measurement approach and the instrument design.

Gai, Mario; Ligori, Sebastiano; Sozzetti, Alessandro; Lattanzi, Mario G

2012-01-01

234

STELLA Experiment - Microbunch Diagnostic  

International Nuclear Information System (INIS)

A microbunch diagnostic system is built at the Accelerator Test Facility (ATF) of Brookhaven National Laboratory for monitoring microbunches (10-fs bunch length) produced by the Inverse Free Electron Laser accelerator in Staged Electron Laser Acceleration experiment. It is similar to one already demonstrated at the ATF. With greatly improved beam optics conditions higher order harmonic coherent transition radiation will be measurable to determine the microbunch length and shape

1998-07-01

235

Air Gun Experiment  

Science.gov (United States)

This video shows an impact experiment of a high-speed impact into a frozen comet-like material (dust, ice, window cleaner and Worcestershire sauce) over a highly porous target (garden perlite). The impact makes a small hole in the comet, simulating a strength-controlled crater, but a large crater grows below and peals back the surface crust like petals of a flower. The result is similar to a deeply buried explosion.

Nasa

236

Experience and Entrepreneurship  

Digital Repository Infrastructure Vision for European Research (DRIVER)

We document in two very different datasets an inverted U-shaped relationship between work experience and entrepreneurship among movers. The first dataset consists of 1,248, U.S. lawyers who were forced to seek alternative employment after the sudden dissolutions of their employers. The second consists of over 7.5 million observations on Swedish workers, where job separation is predominantly unrelated to job destruction. Our empirical results are consistent with a model of stochastic accumulat...

Rider, Christopher I.; Thompson, Peter; Kacperczyk, Aleksandra; Ta?g, Joacim

2013-01-01

237

Zipiko User Experience  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Zipiko is a mobile-enabled web service designed to facilitate sharing social plans with friends and organize spontaneous get-togethers. It was develloped between March and December 2008, initially as a collaboration between Media Lab Helsinki students, later as the main project at Helsinki startup Zipipop. I will analyze in detail the processes, techniques and challenges related to designing user experiences for the web in general and the mobile web in particular. I will describe how vari...

Attardi, Stefano

2009-01-01

238

Experimenting with Open Data  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Public (open) data are now provided by many governments and organizations. Access to them can be made through central repositories or applications such as Google public data. 1 On the other hand, usage is still very much human oriented; there is no global data download, the data need to be selected and prepared manually, and need to be decided data formatting. Experimenting with open data project aim is to design and to evaluate a research prototype for crawling open data repository and colle...

O?ztu?rk, Aybu?ke

2013-01-01

239

Phenix - The experience feedback  

International Nuclear Information System (INIS)

The Phenix reactor holds a special place among French nuclear power plants. As a sodium-cooled fast neutron reactor it was quite unique. Built in 1968, by an integrated CEA/EDF/GAAA team, it would go critical in 1973 and be co-operated with EDF (80% CEA-20% EDF) from 1974 to 2009. During the thirty-five year life span, it would play its dual role as electricity generator (250 MWe) and experimental research reactor. Thus, it gathered considerable experience for fast breeder reactor systems: demonstration of design and operation, breeder potential, transmutation possibilities, development of all technical fields involved and validation of the technology used. This book attempts to summarise the wealth of scientifically exciting experience feedback, from these thirty-five years, for future fourth-generation reactors. Contents: 1 - General presentation of the reactor; 2 - Objectives; 3 - Operation review; 4 - Safety review; 5 - Removal of residual power; 6 - Core physics; 7 - Fuel element; 8 - Intermediate heat exchangers; 9 - Steam generators; 10 - Sodium pumps; 11 - Control rods; 12 - Experimental irradiation and in-cell examinations; 13 - Demonstration of transmutation Possibilities; 14 - Results of tests on the reactor; 15 - Final tests; 16 - Materials; 17 - In-service inspection; 18 - Washing, decontamination and repair; 19 - Handling; 20 - Sodium leaks; 21 - Sodium chemistry; 22 Sodium technology; 23 - A positive environmental Report; 24 - Negative reactivity trips; 25 - Reprocessing and multi-recycling; 26 - Co-generation experiment at Phenix; 27 - Phenix's contribution to Superphenix; 28 - Conclusion; Appendix: Experience feedback on the operation of fast reactors around the world

2013-01-01

240

Equation of state - experiment  

International Nuclear Information System (INIS)

The general form of the equation of state for nuclear matter is discussed with reference to supernovae, stable nuclei and high energy nucleus-nucleus collisions. Sources of data on equation of state are outlined. Momentum flow in collisions as a barometer and pion multiplicity as a thermometer are considered in some detail. Semi-empirical formulations of equations of state are compared with supernova model formulations and, in conclusion, possibilities for future experiments are considered. Material is presented in rough outline form

1985-11-01

 
 
 
 
241

The CKM Experiment  

Energy Technology Data Exchange (ETDEWEB)

I describe the CKM experiment, a new initiative using the Fermilab Main Injector to obtain {approx} 100 events of the ultra-rare decay mode K{sup +} {yields} {pi}{sup +}{nu}{bar {nu}}. The branching ratio will be used to extract |V*{sub ts}V{sub td}|. Due to the decay mode's theoretical cleanliness, it plays a key role in over-constraining the Standard Model description of CP violation.

Hogan H. Nguyen

2002-10-25

242

"We work on experiments"  

CERN Multimedia

Short BBC (?) report on CERN. Emphasis on international collaboration, with Soviets and Chinese highlighted. At end, interview with Danish physicist (our of sync) who talks about working on Sundays and how experiments have 25 people, therefore it is a long way to glory. ISR. Comments: Film scratched and dirty. Colour pink. Looses sync at the end. Video transfer ends before the end of the film.

BBC

1975-01-01

243

Novette experiments: introduction  

International Nuclear Information System (INIS)

Experiments conducted in 1984 on the multi-terawatt, short-wavelength Novette laser were among the most productive ever completed by the LEAD Program. The authors made substantial progress in three areas of research: laser-plasma interaction, ablative compression, and soft x-ray laser studies. Experimental time on Novette was devoted about equally to inertial confinement fusion (ICF)-related research and to the demonstration of a laboratory x-ray laser

1985-06-01

244

Summary on experiments  

International Nuclear Information System (INIS)

Experimental studies of the atomic structures of both simple and complex atoms and ions provide crucial tests of atomic structure theory and of calculational techniques for a wide range of atomic systems. This summary is restricted to a brief discussion of some recent and current experiments in few-electron and many-electron atoms and ions which represent exciting challenges to sophisticated atomic structure calculations, discussed elsewhere. In particular the emphasis is on high-Z systems

1981-03-01

245

Tango for experiment control  

International Nuclear Information System (INIS)

The Tango control system framework allows you to control an accelerator complex as well as single equipment. The framework contains the communication bus with the standard communication modes (synchronous, asynchronous, event driven) as well as the basic hardware access modules, GUI tools and development kits, bindings to commercial products (LabView, Matlab, IgorPro) and services (administration, archiving, access control) to set up a control system. Tango was mainly developed by several synchrotron light sources that have to support not only the accelerator complex but also a lot of experimental end stations. For synchrotron experiments we have to control the whole process from basic hardware access over data taking to data analysis. This paper describes in the first part the special features of Tango allowing flexible experiment control. The dynamic configuration, the rapid hardware interface development and the sequencing and scanning framework are some examples. The second part gives an overview of some packages developed in the Tango community for experiment control: A HKL library for diffraction computation and diffractometer control, a library to control 2D detectors and a data analysis workbench with workflow engine for on-line and off-line data analysis. These packages are not part of Tango and can be used with other control systems. (author)

2012-12-04

246

Combined array experiment design  

International Nuclear Information System (INIS)

Experiment plans formed by combining two or more designs, such as orthogonal arrays primarily with 2- and 3-level factors, creating multi-level arrays with subsets of different strength are proposed for computer experiments to conduct sensitivity analysis. Specific illustrations are designs for 5-level factors with fewer runs than generally required for 5-level orthogonal arrays of strength 2 or more. At least 5 levels for each input are desired to allow for runs at a nominal value, 2-values either side of nominal but within a normal, anticipated range, and two, more extreme values either side of nominal. This number of levels allows for a broader range of input combinations to test the input combinations where a simulation code operates. Five-level factors also allow the possibility of up to fourth-order polynomial models for fitting simulation results, at least in one dimension. By having subsets of runs with more than strength 2, interaction effects may also be considered. The resulting designs have a 'checker-board' pattern in lower-dimensional projections, in contrast to grid projection that occurs with orthogonal arrays. Space-filling properties are also considered as a basis for experiment design assessment

2004-03-08

247

The Double Chooz Experiment  

International Nuclear Information System (INIS)

Double Chooz is a reactor ?-bare-disappearance experiment situated at the commercial nuclear power plant of Chooz in northern France. The experiment aims for the revelation of the last unknown mixing angle ?13 as a part of the neutrino mixing matrix or the improvement of the upper limit for sin2(2?13), which is currently e) using the inverse beta decay and its distinct decay pattern (?-bare + p ? e+ +n). Double Chooz uses two identical detectors at different distances in order to reduce systematic uncertainties. This will allow, after a data taking phase of 4 years, an improvement on sin2(2?13) down to < 0.03 (90% CL). The first (far) detector has successfully been installed and filled, and takes data since April of 2011. A preliminary analysis of first 120 days revealed about 4000 Neutrino-candidates and a stable detector-setup with low backgrounds. The commissioning of the second (near) detector is expected for the beginning of 2013 and will provide maximum sensitivity for the experiment.

2012-07-30

248

CANDU operating experience  

International Nuclear Information System (INIS)

The CANDU (CANada Deuterium Uranium) PHW type of nuclear electricity generating station has been developed jointly by Atomic Energy of Canada Ltd. and Ontario Hydro. This paper summarizes Ontario Hydro's operating experience using the CANDU PHW system with a focus on operating performance and costs, reliability of system components, and nuclear safety considerations to both the workers and the public. The highlights of the CANDU PHW programme in Canada are: (a) the CANDU PHW programme is based upon 37 years of operating experience with heavy-water reactors; (b) Canada has had 92 reactor-years of nuclear electric operations experience with 10 nuclear units in 4 generating stations over a period of 20 years; (c) plants for the production of the necessary heavy water have been in operation in Ontario for nearly 10 years; (d) all objectives have been met with outstanding performance: worker safety, public safety, environmental protection, reliable electricity production, and low electricity cost; (e) the achievement has been realized through total teamwork involving all scientific disciplines and all project functions (research, design, manufacturing, construction and operation). (author)

1982-09-13

249

The OLYMPUS Experiment  

CERN Document Server

The OLYMPUS experiment was designed to measure the ratio between the positron-proton and electron-proton elastic scattering cross sections, with the goal of determining the contribution of two-photon exchange to the elastic cross section. Two-photon exchange might resolve the discrepancy between measurements of the proton form factor ratio, $\\mu_p G^p_E/G^p_M$, made using polarization techniques and those made in unpolarized experiments. OLYMPUS operated on the DORIS storage ring at DESY, alternating between 2.01~GeV electron and positron beams incident on an internal hydrogen gas target. The experiment used a toroidal magnetic spectrometer instrumented with drift chambers and time-of-flight detectors to measure rates for elastic scattering over the polar angular range of approximately $25^\\circ$--$75^\\circ$. Symmetric M{\\o}ller/Bhabha calorimeters at $1.29^\\circ$ and telescopes of GEM and MWPC detectors at $12^\\circ$ served as luminosity monitors. A total luminosity of approximately 4.5~fb$^{-1}$ was collect...

Milner, R; Kohl, M; Schneekloth, U; Akopov, N; Alarcon, R; Andreev, V A; Ates, O; Avetisyan, A; Bayadilov, D; Beck, R; Belostotski, S; Bernauer, J C; Bessuille, J; Brinker, F; Buck, B; Calarco, J R; Carassiti, V; Cisbani, E; Ciullo, G; Contalbrigo, M; D'Ascenzo, N; De Leo, R; Diefenbach, J; Donnelly, T W; Dow, K; Elbakian, G; Eversheim, D; Frullani, S; Funke, Ch; Gavrilov, G; Gläser, B; Görrissen, N; Hauschildt, J; Henderson, B S; Hoffmeister, Ph; Holler, Y; Ice, L D; Izotov, A; Kaiser, R; Karyan, G; Kelsey, J; Khaneft, D; Klassen, P; Kiselev, A; Krivshich, A; Lehmann, I; Lenisa, P; Lenz, D; Lumsden, S; Ma, Y; Maas, F; Marukyan, H; Miklukho, O; Movsisyan, A; Murray, M; Naryshkin, Y; O'Connor, C; Benito, R Perez; Perrino, R; Redwine, R P; Piñeiro, D Rodríguez; Rosner, G; Russell, R L; Schmidt, A; Seitz, B; Statera, M; Thiel, A; Vardanyan, H; Veretennikov, D; Vidal, C; Winnebeck, A; Yeganov, V

2014-01-01

250

New developments in designs for computer experiments and physical experiments  

Digital Repository Infrastructure Vision for European Research (DRIVER)

We develop in this thesis new methodologies for designing both computer experiments and physical experiments. There has been much attention devoted to deterministic computer experiments in the past two decades. Such experiments are performed on computer simulators to study complex physical phenomena that might otherwise be too time-consuming, expensive, or impossible to observe. In this thesis, we develop a new method for constructing “good” designs for computer experiments. The construct...

Lin, Chunfang Devon

2008-01-01

251

Producer in the Experience Economy : How to deliver experiences  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Experiences have become a new trend within the world economy today and a new way to add value to companies. A new economy is emerging named the Experience Economy. The customers’ demands of experiences are increasing and companies need to satisfy these demands and adapt them-selves to this emerging economy. The Experience Economy is today the fastest growing industry in Sweden and has grown steadily during the last decade. The Experience Economy is something that needs to be adapted within ...

Nordell, Nina; Claesson, Mikaela

2006-01-01

252

AGS Experiments: 1989, 1990, 1991  

International Nuclear Information System (INIS)

This report contains: Experimental areas layout; table of beam parameters and fluxes; experiment schedule ''as run''; proposed 1992 schedule; a listing of experiments by number; two-page summaries of each experiment begin here, also ordered by number; publications of AGS Experiments begin here; and list of AGS Experimenters begins here

1992-01-01

253

2169 steel waveform experiments.  

Energy Technology Data Exchange (ETDEWEB)

In support of LLNL efforts to develop multiscale models of a variety of materials, we have performed a set of eight gas gun impact experiments on 2169 steel (21% Cr, 6% Ni, 9% Mn, balance predominantly Fe). These experiments provided carefully controlled shock, reshock and release velocimetry data, with initial shock stresses ranging from 10 to 50 GPa (particle velocities from 0.25 to 1.05 km/s). Both windowed and free-surface measurements were included in this experiment set to increase the utility of the data set, as were samples ranging in thickness from 1 to 5 mm. Target physical phenomena included the elastic/plastic transition (Hugoniot elastic limit), the Hugoniot, any phase transition phenomena, and the release path (windowed and free-surface). The Hugoniot was found to be nearly linear, with no indications of the Fe - phase transition. Releases were non-hysteretic, and relatively consistent between 3- and 5-mm-thick samples (the 3 mm samples giving slightly lower wavespeeds on release). Reshock tests with explosively welded impactors produced clean results; those with glue bonds showed transient releases prior to the arrival of the reshock, reducing their usefulness for deriving strength information. The free-surface samples, which were steps on a single piece of steel, showed lower wavespeeds for thin (1 mm) samples than for thicker (2 or 4 mm) samples. A configuration used for the last three shots allows release information to be determined from these free surface samples. The sample strength appears to increase with stress from ~1 GPa to ~ 3 GPa over this range, consistent with other recent work but about 40% above the Steinberg model.

Furnish, Michael David; Alexander, C. Scott; Reinhart, William Dodd; Brown, Justin L.

2012-11-01

254

Situating Emotional Experience  

Directory of Open Access Journals (Sweden)

Full Text Available Psychological construction approaches to emotion suggest that emotional experience is situated and dynamic. Fear, for example, is typically studied in a physical danger context (e.g., threatening snake, but in the real world, it often occurs in social contexts, especially those involving social evaluation (e.g., public speaking. Understanding situated emotional experience is critical because adaptive responding is guided by situational context (e.g., inferring the intention of another in a social evaluation situation vs. monitoring the environment in a physical danger situation. In an fMRI study, we assessed situated emotional experience using a newly developed paradigm in which participants vividly imagine different scenarios from a first-person perspective, in this case scenarios involving either social evaluation or physical danger. We hypothesized that distributed neural patterns would underlie immersion in social evaluation and physical danger situations, with shared activity patterns across both situations in multimodal sensory regions and in circuitry involved in integrating salient sensory information, and with unique activity patterns for each situation type in coordinated large-scale networks that reflect situated responding. More specifically, we predicted that networks underlying the social inference and mentalizing involved in responding to a social threat (in regions that make up the “default mode” network would be reliably more active during social evaluation situations. In contrast, networks underlying the visuospatial attention and action planning involved in responding to a physical threat would be reliably more active during physical danger situations. The results supported these hypotheses. In line with emerging psychological construction approaches, the findings suggest that coordinated brain networks offer a systematic way to interpret the distributed patterns that underlie the diverse situational contexts characterizing emotional life.

ChristineDWilson-Mendenhall

2013-11-01

255

Solar neutrino experiments  

International Nuclear Information System (INIS)

The present status of experimental solar neutrino research is reviewed. Updated results from the Homestake, Kamiokande, GALLEX and SAGE detectors all show a deficit when compared to recent standard solar model calculations. Two of these detectors, GALLEX and SAGE, have recently been checked with artificial "5"1Cr neutrino sources. It is shown that astrophysical scenarios to solve the solar neutrino problems are not favoured by the data. There is hope that the results of forthcoming solar neutrino experiments can provide the answers to the open questions. (author) 6 figs., 3 tabs., 36 refs

1996-11-01

256

Solar neutrino experiments  

Energy Technology Data Exchange (ETDEWEB)

The present status of experimental solar neutrino research is reviewed. Updated results from the Homestake, Kamiokande, GALLEX and SAGE detectors all show a deficit when compared to recent standard solar model calculations. Two of these detectors, GALLEX and SAGE, have recently been checked with artificial {sup 51}Cr neutrino sources. It is shown that astrophysical scenarios to solve the solar neutrino problems are not favoured by the data. There is hope that the results of forthcoming solar neutrino experiments can provide the answers to the open questions. (author) 6 figs., 3 tabs., 36 refs.

Hampel, W. [Max-Planck-Institut fuer Kernphysik, Heidelberg (Germany)

1996-11-01

257

Proteins in the experiment  

International Nuclear Information System (INIS)

The backbone of ferredoxin and hemoproteins are described by SAWs in two and three dimensions. But the spin-lattice relaxation process of Fsub(e)3+ ions cannot be described by pure fractal model. The spectral dimensions observed in experiment is defined through dsub(s)=dsub(f)/a, a is given by the scaling form of the low frequency mode ?(bL)=bsup(a)?(L) of the whole system consisting of proteins and the solvent upon a change of the length scale. (author)

1985-01-01

258

Double Chooz experiment  

International Nuclear Information System (INIS)

Double Chooz will use two identical detectors at different distances from the Chooz nuclear power station to search for a non-vanishing value of ?13, and, hopefully, to open the way to experiments aspiring to discover CP violation in the leptonic sector. The far detector is expected to be operative by the end of 2009. Installation of the near detector will occur in 2010. Double Chooz has the capacity to exclude sin2(2?13) 312 = 2.5 x 10-3 eV2 with three years of data running both near and far detectors. (author)

2009-07-16

259

The double chooz experiment  

Science.gov (United States)

The Double Chooz experiment observed an indication of reactor ?e disappearance consistent with neutrino oscillations at 1050 m from two reactors. During the first 101 days of data taking, the ratio of observed to expected events assuming no oscillation amount to 0.944 +/- 0.016 (stat) +/- 0.040 (syst). Combined with energy spectrum information, this deficit leads to sin2(2?13) = 0.086+/-0.041(stat)+/-0.030(syst), excluding the no oscillation hypothesis at the 94.6% C.L.

Collin, A. P.; Double Chooz Collaboration

2013-10-01

260

The Double Chooz Experiment  

International Nuclear Information System (INIS)

The Double Chooz neutrino oscillations experiment is expected to measure, or limit, the unmeasured leptonic mixing angle ?13 using neutrinos from the Chooz reactor complex (France). The experimental technique relies on two detectors to reduce the so far dominating neutrino flux uncertainty as well as backgrounds. The DC sensitivity (at 90%CL) is sin2(2?13)2(2?13)<0.030, for the far detector only (1.5 years) and near/far detectors (3 years), respectively. The far detector is to be filled and completed by the end 2010, while data taking has started since June 2010 (without scintillator).

2010-06-14

 
 
 
 
261

Survey of Tokamak experiments  

International Nuclear Information System (INIS)

The survey covers the following topics:- Introduction and history of tokamak research; review of tokamak apparatus, existing and planned; remarks on measurement techniques and their limitations; main results in terms of electron and ion temperatures, plasma density, containment times, etc. Empirical scaling; range of operating densities; impurities, origin, behaviour and control (including divertors); data on fluctuations and instabilities in tokamak plasmas; data on disruptive instabilities; experiments on shaped cross-sections; present experimental evidence on ? limits; auxiliary heating; experimental and theoretical problems for the future. (author)

1977-09-01

262

Fuzzy experiment interpretation  

International Nuclear Information System (INIS)

A fuzzy generalization of methods for data analysis and measurement models is proposed. These methods have been applied in nuclear-physics and remote environmental diagnoses. In these methods, the parameters of the studied object as well as the adequacy of the model are determined. The used method consists of a measurement and an interpretation model. The quality of the interpretation and the reliability of the model are discussed. An example of the computer modelling of an experiment using a fuzzy model is presented

1994-09-14

263

Ontario Hydro decontamination experience  

International Nuclear Information System (INIS)

Ontario Hydro currently operates 18 nuclear electric generating units of the CANDU design with a net capacity of 12,402 MW(e). An additional 1,762 MW(e) is under construction. The operation of these facilities has underlined the need to have decontamination capability both to reduce radiation fields, as well as to control and reduce contamination during component maintenance. This paper presents Ontario Hydro decontamination experience in two key areas - full heat transport decontamination to reduce system radiation fields, and component decontamination to reduce loose contamination particularly as practised in maintenance and decontamination centres. (author)

1991-04-01

264

The Baikal neutrino experiment  

Energy Technology Data Exchange (ETDEWEB)

We review the status of the Lake Baikal Neutrino Experiment. Preparation towards a km{sup 3}-scale Gigaton Volume Detector (GVD) in Lake Baikal is currently a central activity. As an important milestone, a km{sup 3}-prototype string comprising of 12 optical modules and based on a completely new technology, has been installed and was put in operation together with NT200+ in April, 2009. We also present recent results from the long-term operation of NT200, including an improved limit on the diffuse astrophysical neutrino flux.

Avrorin, A. [Institute for Nuclear Research, 60th October Anniversary pr. 7a, Moscow 117312 (Russian Federation); Aynutdinov, V., E-mail: aynutdin@yandex.r [Institute for Nuclear Research, 60th October Anniversary pr. 7a, Moscow 117312 (Russian Federation); Balkanov, V. [Institute for Nuclear Research, 60th October Anniversary pr. 7a, Moscow 117312 (Russian Federation); Belolaptikov, I. [Joint Institute for Nuclear Research, Dubna (Russian Federation); Berezhnev, S. [Skobeltsyn Institute of Nuclear Physics MSU, Moscow (Russian Federation); Bogorodsky, D.; Budnev, N. [Irkutsk State University, Irkutsk (Russian Federation); Danilchenko, I.; Domogatsky, G.; Doroshenko, A. [Institute for Nuclear Research, 60th October Anniversary pr. 7a, Moscow 117312 (Russian Federation); Dyachok, A. [Irkutsk State University, Irkutsk (Russian Federation); Dzhilkibaev, Zh. [Institute for Nuclear Research, 60th October Anniversary pr. 7a, Moscow 117312 (Russian Federation); Ermakov, G. [Skobeltsyn Institute of Nuclear Physics MSU, Moscow (Russian Federation); Fialkovsky, S. [Nizhni Novgorod State Technical University, Nizhni Novgorod (Russian Federation); Gaponenko, O. [Institute for Nuclear Research, 60th October Anniversary pr. 7a, Moscow 117312 (Russian Federation); Golubkov, K. [Joint Institute for Nuclear Research, Dubna (Russian Federation); Gres' , O.; Gres' , T. [Irkutsk State University, Irkutsk (Russian Federation); Grishin, N. [Skobeltsyn Institute of Nuclear Physics MSU, Moscow (Russian Federation); Grishin, O. [Irkutsk State University, Irkutsk (Russian Federation)

2011-01-21

265

RESULTS FROM LHCF EXPERIMENT  

Directory of Open Access Journals (Sweden)

Full Text Available The LHCf experiment has taken data in 2009 and 2010 p–p collisions at LHC at ?s = 0.9TeV and ?s = 7TeV. In this paper the most up-to-date results on the inclusive photon spectra and the ?0 spectra measured by LHCf are reported. Comparison of these spectra with the model expectations and the impact on high energy cosmic ray (HECR Physics are iscussed. In addition, perspectives for future analyses as well as the program for the next data taking period, in particular the foreseen data taking in p–Pb collisions, will be discussed.

Alessia Tricomi

2013-12-01

266

The CLEAR Experiment  

CERN Document Server

The Spallation Neutron Source in Oak Ridge, Tennessee, is designed to produce intense pulsed neutrons for various science and engineering applications. Copious neutrinos are a free by-product. When it reaches full power, the SNS will be the world's brightest source of neutrinos in the few tens of MeV range. The proposed CLEAR (Coherent Low Energy A (Nuclear) Recoils) experiment will measure coherent elastic neutral current neutrino-nucleus scattering at the SNS. The physics reach includes tests of the Standard Model.

Scholberg, K; Hungerford, E; Empl, A; Markoff, D; Müller, P; Efremenko, Y; McKinsey, D; Nikkel, J

2009-01-01

267

The OTTI space experiments  

International Nuclear Information System (INIS)

The orbiting technology tested initiative (OTTI) provides a concept for a series of space experiment platforms to be flown at 2-year interval over the next ten years. The long-term purpose of this program is to provide a convenient test-beds to simulate high radiation environments. The purposes of the first platform is to evaluate the on-orbit performance of novel, emerging, breakthrough technologies and advanced state-of-the-art devices in high radiation orbits and to provide correlations between the natural space radiation environment and the device response in the flight test-bed. This short article presents the concept of the OTTI program

1999-09-13

268

Laboratory analog experiment  

International Nuclear Information System (INIS)

The status of the Laboratory Analog Program being conducted for the Nuclear Regulatory Commission at Argonne National Laboratory is reviewed. This is an integrated experiment designed to determine how well the behavior of a breached basalt repository is understood. The general conclusion is that Sentinel Gap basalt reacts readily at low temperature with water to produce an assemblage including clay minerals throughout the range of experimentation. These minerals may be useful as adsorbers for material emplanted in the basalt. It is recommended that sorption capabilities be investigated with specific ions

1982-08-01

269

Progress on STELLA Experiment  

International Nuclear Information System (INIS)

Progress is reported on the Staged Electron Laser Acceleration (STELLA) experiment, which has been assembled on the BNL Accelerator Test Facility (ATF). The primary goal of STELLA is to demonstrate staging of the laser acceleration process by using the BNL inverse free electron laser (IFEL) as a prebuncher, which generates ?1-(micro)m long microbunches, and accelerating these microbunches using an inverse Cerenkov acceleration (ICA) stage. Experimental runs are underway to recommission the IFEL and ICA systems separately, and reestablish the microbunching process. Staging will then be examined by running both the IFEL depicted in Fig. 1

1999-04-02

270

[Ureteroscopy. Experience and results].  

Science.gov (United States)

Ureteroscopy is an Endo-urological procedure which has been practiced around the world in all teaching centers of Urology. It presents obvious advantages. Our experience has been satisfactory, not only due to the coordinated and joint work, but for the results obtained in behalf of our patients who went back to their regular activities shortly after. As all the new procedures, it has a learning curve which is given after the initial training has been acquired but its performance will give expertise, same as radiologic technology and the development of new instruments with smaller diameter and accessories which allow the easier access to ureter and lithotripsy. PMID:1767038

Delgado, G; Alvarado, A; de Solanilla, E C

1991-09-01

271

LHCb early running experience  

Energy Technology Data Exchange (ETDEWEB)

The LHC 7TeV Physics programme started at the end of March 2010. This paper highlights the experiences of running the LHCb detector with early pp-collisions from the LHC. An overview of the operation of the detector with the first 1pb{sup -1} will be given, and the challenge of running the detector smoothly in the initial data taking stages. Focus will be given to the performance of the hardware and the interplay between LHCb and the machine. We highlight our successes, and report on progress made in solving outstanding sub-detector issues.

Hennessy, K, E-mail: karol.hennessy@cern.ch [Department of Physics, University of Liverpool, Oliver Lodge Laboratory, Liverpool L69 7ZE (United Kingdom)

2010-12-15

272

Neutralized transport experiment  

Science.gov (United States)

Experimental details on providing active neutralization of high brightness ion beam have been demonstrated for Heavy Ion Fusion program. A K + beam was extracted from a variable-perveance injector and transported through 2.4 m long quadrupole lattice for final focusing. Neutralization was provided by a localized cathode arc plasma plug and a RF volume plasma system. Effects of beam perveance, emittance, convergence focusing angle, and axial focusing position on neutralization have been investigated. Good agreement has been observed with theory and experiment throughout the study.

Roy, P. K.; Yu, S. S.; Eylon, S.; Henestroza, E.; Anders, A.; Gilson, E. P.; Bieniosek, F. M.; Greenway, W. G.; Logan, B. G.; Waldron, W. L.; Shuman, D. B.; Vanecek, D. L.; Welch, D. R.; Rose, D. V.; Thoma, C.; Davidson, R. C.; Efthimion, P. C.; Kaganovich, I.; Sefkow, A. B.; Sharp, W. M.

2005-05-01

273

Initial blood storage experiment  

Science.gov (United States)

The possibility of conducting experiments with the formed elements of the blood under conditions of microgravity opens up important opportunities to improve the understanding of basic formed element physiology, as well as, contribution to improved preservation of the formed elements for use in transfusion. The physiological, biochemical, and physical changes of the membrane of the erythrocyte, platelet, and leukocyte was studied during storage under two specific conditions: standard blood bank conditions and microgravity, utilizing three FDA approved plastic bags. Storage lesions; red cell storage on Earth; platelet storage on Earth; and leukocyte storage Earth were examined. The interaction of biomaterials and blood cells was studied during storage.

Surgenor, Douglas MACN.

1988-01-01

274

The Malaysia LNG experience  

International Nuclear Information System (INIS)

This paper summarizes the nature of the LNG trade, the essential components and characteristics of an LNG project, and relates the Malaysia LNG experience to project realization with some emphasis on the financial aspects of the project. Twelve offshore lending institutions were involved in the total project loop providing U.S. dollar equivalents of 4.0 billions with interest rates ranging from 5% to 8%. The total project was completed on schedule and within budget except for the ships which got caught in the political development of the Malaysian petroleum industry at that time

1990-04-09

275

Hope triumphs over experience  

...WWF and Greenpeace think the European Union's failed Emissions Trading System can be repaired. That would be fixing the unfixable. Hope triumphs ...triumphs over experience WWF and Greenpeace think the European Union’s failed Emissions Trading System can be repaired. That would be fixing the unfixable.... But WWF and Greenpeace, in the optimistically-titled report Saving the EU Emissions Trading Scheme and raising climate ambition (PDF), attributes that to minor ...” Some defenders of emissions trading call it a necessary evil, but as Patrick says, really “it’s only evil, and absolutely ...

276

Fundamental experiments in velocimetry  

Energy Technology Data Exchange (ETDEWEB)

One can understand what velocimetry does and does not measure by understanding a few fundamental experiments. Photon Doppler Velocimetry (PDV) is an interferometer that will produce fringe shifts when the length of one of the legs changes, so we might expect the fringes to change whenever the distance from the probe to the target changes. However, by making PDV measurements of tilted moving surfaces, we have shown that fringe shifts from diffuse surfaces are actually measured only from the changes caused by the component of velocity along the beam. This is an important simplification in the interpretation of PDV results, arising because surface roughness randomizes the scattered phases.

Briggs, Matthew Ellsworth [Los Alamos National Laboratory; Hull, Larry [Los Alamos National Laboratory; Shinas, Michael [Los Alamos National Laboratory

2009-01-01

277

THYROGLOSSAL CYST OUR EXPERIENCE  

Directory of Open Access Journals (Sweden)

Full Text Available This study shares our experiences in managing patients with thyroglossal cysts. These are common midline tumors of neck. Characteristically these masses move on protrusion of tongue due to their intimate relationship with hyoid bone. Adults commonly presented with this lesion even though literature review suggests it to be common in children. All these patients underwent surgerybecause of the presence of mass rather than any symptoms. All 30 patients taken up in this study had a normal functioning thyroid in the normal position in addition to the cystic lesion.

Balasubramanian Thiagarajan

2013-01-01

278

Mössbauer Magnetic Scan experiments  

Science.gov (United States)

We report an application of the Mössbauer Effect designed to retrieve specific information on the magnetic response of iron-containing materials. It consists in the measurement of the nuclear absorption of gamma-rays as a function of an external magnetic field for a specific nuclear transition between magnetically-split nuclear levels. The experiments, here termed Mössbauer Magnetic Scan experiments, were carried out recording the absorption of 57Fe 14.4 keV gamma-ray in ?-Fe at constant Doppler energies coincident with some of the spectral lines of the magnetically split Mössbauer spectrum. Due to the dependence of the transition probabilities on the relative orientation between the nuclear magnetic moment and the gamma-ray direction, the present application results in a useful method to study the magnetic-field evolution of the distribution of atomic-magnetic-moment orientations. The proposed technique inherit from the Mössbauer Spectroscopy the chemical-element selectiveness as well as the ability to differentiate responses from iron atoms located at inequivalent site or at different phases. In this work, we show that the data analysis for these experiments depends on the sample thickness that the gamma-ray has to cross. For thin samples (i.e.samples with Mössbauer effective thicknesses lower than one) the magnetic-field dependence of the second-order-moment of the orientation distribution in the direction of the gamma ray is obtained. On the other hand, for thicker samples, although the data analysis is more complex, the dependences of the three second-order-moments of the orientation distribution are obtained. The experiments were performed on two ?-Fe foils of different Mössbauer effective thicknesses. They were chosen to represent the cases of thin and thick Mössbauer absorbers. The magnetic evolution of the orientations distribution is compared with results obtained from magnetometric measurements showing a good agreement as well indicating the complementarity of both techniques. A complete description of the experimental set up and the formalism for Mössbauer Magnetic Scan data analysis are presented.

Pasquevich, G. A.; Mendoza Zélis, P.; Lencina, A.; Veiga, A.; Fernández van Raap, M. B.; Sánchez, F. H.

2014-06-01

279

Experiment@Portugal  

Directory of Open Access Journals (Sweden)

Full Text Available

The main goal of the Project Experiment@Portugal is to produce a complete survey of Portuguese developments in remote and virtual labs. This knowledge will provide the conditions for joining forces in order to organize a well structured national website integrating a database of available remote and virtual experiments, categorized for sharing purposes, and looking for delivering valuable contents for high schools and for higher education. It is expected that the final result will bring up a solid team able to offer in this domain a Portuguese partner at international level

Maria Teresa Restivo

2011-04-01

280

Postmenopausal osteoporosis: Our experience  

Science.gov (United States)

Introduction: There is very little published literature about experience with osteoporosis treatment from our country. Materials and Methods: It is a retrospective analysis of first 50 patients enrolled in our clinic for osteoporosis. Postmenopausal women with T score of less than -2.5 or history suggestive fragility fracture with supportive bone mineral density (BMD) were included. Patients having hypercalcemia, abnormal renal function, myeloma and on long-term steroids were also excluded. Results: Nearly 34% subjects were below the age of 60 years, 47% of subjects were between 60 and 70 years, whereas 18% were above 70 years. Nearly 6% had family history of osteoporosis s or history of osteoporotic fractures. Nearly 20% subjects had fracture prior to starting of any treatment. A total of 86% (40/46) had evidence of Vitamin D (VD) deficiency. Nearly 80% of patients were treated with bisphosphonates, 12% were treated with injectable bisphosphonates, and 8% were treated with teriperatide. Nearly 16% patients had duration of more than 5 years of experience with bisphosphonates. Follow up BMD was available in 25 subjects. BMD had improved significantly in 68% of subjects. In 24% the BMD was stable (the change was less than least significant change (LSC)). In 8% BMD had shown a significant decline while being on treatment. Conclusion: Postmenopausal osteoporosis occurs in relatively younger women in our country. Majority of them are VD deficient. Oral bisphosphonates is the most common used drug; it is fairly well tolerated and effective.

Mehrotra, R. N.; Ranjan, Alok; Lath, Rahul; Ratnam, R.

2012-01-01

 
 
 
 
281

The Double Chooz experiment  

Energy Technology Data Exchange (ETDEWEB)

Double Chooz is a reactor neutrino experiment that aims at a precise measurement of the last unknown neutrino mixing angle {theta}{sub 13}. This is conducted by investigating a deficit of electron anti-neutrinos from EDF Chooz nuclear power station in France. Observation of {theta}{sub 13} is moreover important since this value impacts a feasibility to make a future measurement of the leptonic CP violation parameter. The 1 km baseline experiment with reactor neutrinos is advantageous in that this leads to a simple 2 flavor neutrino oscillation formalism, where the clean measurement of {theta}{sub 13} is achievable. To fulfill precisely a {theta}{sub 13} observation, reduction of possible uncertainties and suppression of backgrounds are required. Double Chooz utilizes various techniques for these aspects including two identical detectors at different baselines with each composed of four-layer liquid structure. The goal of Double Chooz is to measure sin{sup 2}(2{theta}{sub 13}) with a sensitivity of 0.03 at 90 % confidence level. The construction of the Double Chooz far detector was successfully completed that is placed at 1 km baseline, and its physics data-taking was started in spring, 2011. In this talk, the experimental concept, results of the first neutrino oscillation analysis, and future prospects of Double Chooz are presented.

Watanabe, Hideki [Max-Planck-Institut fuer Kernphysik, Heidelberg (Germany); Collaboration: Double Chooz-Collaboration

2012-07-01

282

The Double Chooz experiment  

International Nuclear Information System (INIS)

Double Chooz is a reactor neutrino experiment that aims at a precise measurement of the last unknown neutrino mixing angle ?13. This is conducted by investigating a deficit of electron anti-neutrinos from EDF Chooz nuclear power station in France. Observation of ?13 is moreover important since this value impacts a feasibility to make a future measurement of the leptonic CP violation parameter. The 1 km baseline experiment with reactor neutrinos is advantageous in that this leads to a simple 2 flavor neutrino oscillation formalism, where the clean measurement of ?13 is achievable. To fulfill precisely a ?13 observation, reduction of possible uncertainties and suppression of backgrounds are required. Double Chooz utilizes various techniques for these aspects including two identical detectors at different baselines with each composed of four-layer liquid structure. The goal of Double Chooz is to measure sin2(2?13) with a sensitivity of 0.03 at 90 % confidence level. The construction of the Double Chooz far detector was successfully completed that is placed at 1 km baseline, and its physics data-taking was started in spring, 2011. In this talk, the experimental concept, results of the first neutrino oscillation analysis, and future prospects of Double Chooz are presented.

2012-03-02

283

Experience in open markets  

International Nuclear Information System (INIS)

The topic of discussion in this session was experience in open markets. The session was led by Guido Bachman, President of the Independent Power Producers' Society of Alberta (IPPSA), assisted by panel members Richard Way, Director of Energy Risk Management at TransAlta, John O'Donnell, Professor of Finance at Michigan State University, and Kelly Lail, Manager of Power Acquisition at B.C. Hydro. Way spoke of the experiences with market restructuring in Alberta, describing the consultative and legislative process which determined the structure of the Alberta Power Pool (APP). The Pool began operations in January 1996. Currently there are 33 participants from generators, to distributors and marketers. Supply and demand are managed by APP by setting an hourly price based on offers and bids. Both generators and distributors get the hourly pool price, so the input price and export price of the pool are the same, however, generators and distributors are free to enter into 'contract for difference' agreements. O'Donnell discussed the status of competition in Michigan. He stressed the importance of Ontario to the Michigan market, echoing the conviction of U.S. regulators that a freer economy works better. Kelly Lail spoke of the unbundling of B.C. Hydro into several generating, transmission and distribution companies in preparation for moving from exclusive service to exclusive wholesale competition. He predicted that the fierce competition will lead to a an industry shakeout, leaving only one big (B.C. Hydro) and a few niche players

1996-10-22

284

The VASCO experiment  

Science.gov (United States)

The Intraseasonal Oscillation (ISO) of the deep convection is the most dominant and coherent component of the intraseasonal variability in the tropical atmosphere. This ISO is related to the onset and to the intensity of the Asian and the Australian monsoons and is suspected to influence also timing and strength of El Nino - Southern Oscillation (ENSO). However, the origin of ISO is still an open question, in particular for the role of air-sea interactions in the development and the characteristics of the ISO convective and dynamical perturbations. The experiment VASCO (Variability of the Atmosphere at the intra-Seasonal time scale and Coupling with the Ocean) aims to document the perturbation of the atmospheric dynamics, the surface fluxes and the ocean mixed layer due to the passage of an ISO. The experiment design is based on quasi-Lagrangian pressurised balloons and on Aeroclippers (balloons measuring both the atmospheric and oceanic surface parameters) for the atmospheric part and on moored buoys and ARGO floats to document the perturbation of the ocean mixed layer. The quasi-Lagrangian pressurised balloons and the Aeroclippers are developed in cooperation between CNES, LMD and LODYC.

Duvel, J. P.

2001-08-01

285

PHOBOS experiment at RHIC  

International Nuclear Information System (INIS)

The study of relativistic heavy nuclei collisions at RHIC opens a new area of physics--the physics of hadronic matter at very high energy densities. The conditions necessary to create a new state of matter, never before seen in the laboratory, may be reached. It gives a chance to study the quantum chromodynamics predictions of the phase transition from hadronic matter to a quark-gluon plasma. The PHOBOS experiment will investigate almost all predicted signals of the QGP formation. General event properties (angular distribution of charged particles, total multiplicity) will be combined with detailed information on particles emitted in the central rapidity region (particle ratios ?/K/p, pt spectra, correlations, ? meson properties). Similar studies will be done also in the other three experiments at RHIC, but there are many important observables for which PHOBOS will provide unique information. The multiplicity detector covers almost a full phase space, recording all charged particles with pseudorapidities |?| ? 5.4. In the PHOBOS spectrometer particles emitted in the central rapidity region will be measured and identified starting from lowest transverse momenta (20 MeV/c for pions). The high rate unbiased trigger gives a chance to see unpredicted phenomena and enables the study of very rare processes that require large statistics. The measurements of the converting photons planned for some runs will be used to study the ?0/(?+ + ?-) ratio in selected phase space intervals

1995-09-12

286

Blowdown experiments and interpretation  

International Nuclear Information System (INIS)

The CANON experiments which are being carried out in Grenoble, are intended for providing data for the development of a new theoretical analysis programmed in a computer code named BERTHA, which will predict the hydrodynamic phenomena of a blowdown accident, in a light water reactor. CANON experiments, carried out under adiabatic conditions, are a means of checking methods of pressure and temperature measurements. Presently, they allow the development of a new technique of measuring the mean void fraction in a section of the channel from epithermal neutron absorption, such measurements being made every one or two milliseconds. the BERTHA code is a one-dimensional model with the hypothesis of equal velocity of each phase, but taking into account a thermodynamic nonequilibrium. The energy flux at the phase interface is evaluated with a conduction model in the liquid layer at this interface. The numerical method used is a characteristic one. It is very slow as soon as the flow is in liquid phase, but it leads to an acceptable time-step in two-phase flow. Consequently, the method is well adapted to the problem of blowdown in which the fluid remains in liquid phase during a few milliseconds

1975-06-01

287

Stirling machine operating experience  

Energy Technology Data Exchange (ETDEWEB)

Numerous Stirling machines have been built and operated, but the operating experience of these machines is not well known. It is important to examine this operating experience in detail, because it largely substantiates the claim that stirling machines are capable of reliable and lengthy operating lives. The amount of data that exists is impressive, considering that many of the machines that have been built are developmental machines intended to show proof of concept, and are not expected to operate for lengthy periods of time. Some Stirling machines (typically free-piston machines) achieve long life through non-contact bearings, while other Stirling machines (typically kinematic) have achieved long operating lives through regular seal and bearing replacements. In addition to engine and system testing, life testing of critical components is also considered. The record in this paper is not complete, due to the reluctance of some organizations to release operational data and because several organizations were not contacted. The authors intend to repeat this assessment in three years, hoping for even greater participation.

Ross, B. [Stirling Technology Co., Richland, WA (United States); Dudenhoefer, J.E. [Lewis Research Center, Cleveland, OH (United States)

1994-09-01

288

The VIP Experiment  

International Nuclear Information System (INIS)

The Pauli Exclusion Principle (PEP) is a basic principle of Quantum Mechanics, and its validity has never been seriously challenged. However, given its importance, it is very important to check it as thoroughly as possible. The recently approved VIP (VIolation of Pep) experiment, represents an improved version of the Ramberg and Snow experiment (Ramberg and Snow, Phys. Lett. B238 (1990) 438). VIP shall be performed at the Gran Sasso underground laboratories, and aims to test the Pauli Exclusion Principle for electrons with unprecedented accuracy. VIP is a Collaboration among four Institutions out of three countries (LNF-INFN, and INFN Trieste Italy; SMI-Vienna, Austria; IFIN-HH, Bucharest, Romania). It uses an apparatus with CCDs (Charge Coupled Device) as detectors of X rays - looking for PEP violating transitions in Copper: transitions from the 2p level to 1s with the 1s already occupied by 2 electrons. The characteristic of such transition is the energy - displaced with respect to the normal 2p ? 1s one by about 300 eV. VIP will bring the limit on the probability that PEP is violated by electrons to 10-30, exploring so a region where new theories allow for a possible PEP violation. (authors)

2005-05-27

289

Compact toroid formation experiments  

International Nuclear Information System (INIS)

We present the design and experimental performance of a compact toroid (CT) formation experiment. The device has co-axial electrode diameters of 0.9 m (inner) and 1.25 m (outer), and an electrode length of ? 1.2 m, including an expansion/drift section. The CT is formed by a 0.1--0.2 Tesla initial radial magnetic field embedded co-axial puff gas discharge. The gas puff is injected with an array of 60 pulsed solenoid driven fast valves. The formation discharge is driven by a 108 microfarad, 40 to 100 KV, 86 to 540 kilojoule 2 to 5 megamp capacitor discharge with ? 20 nanohenry initial total discharge inductance. The hardware includes transmission line connections for a Shiva Star (1300 microfarad, up to 120 KV, 0.4 megajoule) capacitor bank driven acceleration discharge. Experimental measurements include current, voltage; azimuthal, radial and axial magnetic field at numerous location; fast photography, optical spectroscopy; microwave, CO2 laser, and He-Ne laser interferometry. Auxiliary experiments include Penning ionization gauge, pressure probe, and breakdown gas trigger diagnostics of gas injection, and Hall probe measurements of magnetic field injection

1990-05-21

290

The Karlsruhe Dynamo Experiment  

Directory of Open Access Journals (Sweden)

Full Text Available It has been shown theoretically in the past that homogeneous dynamos may occur in electrically conducting fluids for various vortical velocity fields. Roberts (1972 investigated spatially periodic, infinitely extended fields of vortices which Busse (1978, 1992 confined to a finite cylindrical domain. Based on Busse's vortex arrangement a conceptual design for an experimental homogeneous dynamo has been developed and a test facility was setup at the Forschungszentrum Karlsruhe. The first experiments demonstrated that permanent dynamo action can be generated in a cylindrical container filled with liquid sodium in which by means of guide tubes counterrotating and countercurrent spiral vortices are established. The dynamo is self-exciting and the magnetic field saturates at a mean value for fixed super-critical flow rates. The instantaneous magnetic field fluctuates around this mean value by an order of about 5%. As predicted by theory the mode of the observed magnetic field is non-axisymmetric. In a series of experiments a phase- and a bifurcation diagram has been derived as a function of the spiral and axial flow rates.

2002-01-01

291

The STARTRACK experiment  

International Nuclear Information System (INIS)

STARTRACK is the acronym of an experiment that aims to measure ionisation cluster distributions in nano-metric sites placed at different distances from an accelerated charged particle track. STARTRACK will first use the 20 nm wall-less detector, already used for studying the nano-metric track structure of an alpha particle, and then a new detector designed for measuring ionisation clusters in 10 nm sites. The experiment is mounted on the beam line of the Tandem-Alpi accelerator facility of the Legnaro Laboratories, which supplies ion beams from hydrogen to gold up to energy ranging from 7 to 28 MeV/amu. Track nano-dosimetry aims to measure ionisation clusters along and aside the ion track down to occurrence probability of 10-5. To reach such a goal at least 106 events have to be collected and the cluster pile-up probability has to be reduced to less than 10-6. By using a beam profile detector, which is sensitive to very weak currents, and an event rejector counter, such an aim is feasible. (authors)

2006-06-12

292

The EBEX Experiment  

International Nuclear Information System (INIS)

EBEX is a balloon-borne polarimeter designed to measure the intensity and polarization of the cosmic microwave background radiation. The measurements would probe the inflationary epoch that took place shortly after the big bang and would significantly improve constraints on the values of several cosmological parameters. EBEX is unique in its broad frequency coverage and in its ability to provide critical information about the level of polarized Galactic foregrounds which will be necessary for all future CMB polarization experiments. EBEX consists of a 1.5 m Dragone-type telescope that provides a resolution of less than 8 arcminutes over four focal planes each of 4. diffraction limited field of view at frequencies up to 450 GHz. The experiment is designed to accommodate 330 transition edge bolometric detectors per focal plane, for a total of up to 1320 detectors. EBEX will operate with frequency bands centered at 150, 250, 350, and 450 GHz. Polarimetry is achieved with a rotating achromatic half-wave plate. EBEX is currently in the design and construction phase, and first light is scheduled for 2008

2004-08-02

293

Cusp Injection Experiment  

International Nuclear Information System (INIS)

A brief survey is given of the characteristics of the ? = 1 cusped configuration and the experimental techniques for establishing hot field-free cusped plasmas. Results from the cusp compression experiments at the Culham Laboratory are summarised and it is concluded that wall and external plasma effects make it extremely difficult to obtain a cusp hole of size less than an ion gyro-diameter by the compression method. An injection technique is described in which hot field-free plasma is transferred from a conical theta-pinch gun through a uniform magnetic guide field into a cusped field region where directed energy is randomised by collision with counter-streaming plasma. Experimental results are presented on gun development, on the injection of plasma into guide fields and on the stability of flow of plasma ''spears'' along guide fields. Preliminary measurements on plasma trapping in a cusped region are reported. Experiments on the collision of plasmas in guide field and zero field show the importance of very low magnitude trapped magnetic fields in causing strong interaction and randomisation of directed energy. The study of a magnetic mirror plasma formed by colliding plasma spears indicates that thermal conductivity may be the major energy loss process. (author)

1966-04-01

294

Toroidal confinement experiments  

International Nuclear Information System (INIS)

The Advanced Toroidal Facility (ATF) torsatron was the major focus of work in the area of toroidal confinement experiments during 1985. Studies have documented more clearly the flexibility that ATF will provide in investigating a range of magnetic configurations and have elucidated features that relate to control of plasma density and impurities. The construction project progressed well, with completion set for late 1986. The experimental program was more clearly defined, and extensive preparations were well under way at year's end. These efforts are described. In the area of advanced projects activities were carried out on two fronts. Stellarator reactor studies focused on ATF-like configurations that retain the potential for high beta at even lower aspect ratios, and the spherical torus concept was developed to the proposal stage and favorably reviewed by the Office of Fusion Energy. Confinement studies were carried out to establish physics requirements and options for compact ignition tokamak (CIT) experiments, as an aid for design selection and optimization. Details of these and other advanced studies are given. Active collaborations continued in several areas

1986-07-01

295

Edge Plasma Turbulence: Experiment  

International Nuclear Information System (INIS)

This talk will survey past and present experiments on edge plasma turbulence with an emphasis on recent results from toroidal fusion devices. This turbulence mainly consists of broadband plasma density fluctuations with relative amplitude ? 5-50% in the frequency range ? 10 kHz-1 MHz, with a size scale ? 0.1-10 cm perpendicular to the magnetic field but many meters along the magnetic field (nearly 2D '' filaments ''). Standard diagnostic methods will be described (electric and magnetic probes, electromagnetic scattering, microwave reflectometry, optical line emission, and heavy ion beam probes), and various data analysis techniques will be illustrated (1-point and 2-point statistical methods and 2D image analysis). Experimental results on edge turbulence will be reviewed in the following areas (time permitting): turbulence levels, frequency spectra, size scales, radial and poloidal variations, parameter scalings, intermittency and blobs, L-H transitions, relationship to edge flows, relationship to edge transport, and edge turbulence control. A comparison between various magnetic configurations will be attempted, and a comparison of the tokamak results to theory will be presented (from an experimental perspective). Finally, some possible directions for future measurements and experiments will be discussed. (author)

2006-09-11

296

The TFTR DT experiments  

Energy Technology Data Exchange (ETDEWEB)

The Tokamak Fusion Test Reactor (TFTR) was designed to study controlled deuterium-tritium (DT) fusion and develop an understanding of the fusion process in a hot, magnetically confined, low density reactor-like plasma. The DT fusion studies began in December, 1993 with the use of an approximately 50/50 mix of deuterium and tritium to produce a world record controlled fusion power of 6.2 MW. Since that time, fusion power output of up to 9 MW has been achieved and operation above 7 MW is routinely obtained. The TFTR experimental program encompasses a wide range of topics, including: maximizing fusion power production, isotope scaling of energy confinement time, plasma heating by fusion produced alpha particles, transport and confinement of fusion produced alpha particles, investigation of collective instabilities driven by fusion alpha particles, ICRF heating in DT plasmas, interaction of alpha particles with various ICRF heating schemes, DT studies in the enhanced confinement regimes accessible on TFTR, and particle transport and recycling in DT plasmas. This list is not exhaustive and many additional studies and experiments are in progress. This talk will begin with a short review of the tokamak fusion reactor concept and an overview of TFTR. Recent TFTR DT experiments and results will be described.

Owens, D.K. [Princeton Plasma Physics Lab., Princeton, NJ (United States)

1994-12-31

297

Cibola flight experiment  

Energy Technology Data Exchange (ETDEWEB)

Los Alamos National Laboratory is building the Cibola Flight Experiment (CFE), a reconfigurable processor payload intended for a Low Earth Orbit system. It will survey portions of the VHF and UHF radio spectra. The experiment uses networks of reprogrammable, Field Programmable Gate Arrays (FPGAs) to process the received signals for ionospheric and lightning studies. The objective is to validate the on-orbit use of commercial, reconfigurable FPGA technology utilizing several different single-event upset mitigation schemes. It will also detect and measure impulsive events that occur in a complex background. Surrey Satellite Technology, Ltd (SSTL) is building the small host satellite, CFESat, based upon SSTL's disaster monitoring constellation (DMC) and Topsat mission satellite designs. The CFESat satellite will be launched by the Space Test Program in September 2006 on the US Air Force Evolved Expendable Launch Vehicle (EELV) using the EELV's Secondary Payload Adapter (ESPA) that allows up to six small satellites to be launched as 'piggyback' passengers with larger spacecraft.

Roussel-Dupre, D. (Diane); Caffrey, M. P. (Michael Paul)

2004-01-01

298

The Virtual Arizona Experience  

Science.gov (United States)

To commemorate the once-in-a-lifetime event of Arizona's hundredth birthday, the Centennial Commission and the Governor of Arizona envisioned a museum and companion website that would capture the state's history, celebrate its people, and embrace its future. Working with world-renowned museum designers, the state began to seek ideas from across Arizona to create plans for a journey of discovery through science and the humanities. The museum would introduce visitors to some of the people who nurtured the state through its early years and others who are innovating its tomorrows. Showcases would include the resources and experiences that shaped the state's history and are transforming its present day, highlighting the ingenuity that tamed the wild frontier and is envisioning Arizona's next frontiers through science and technology. The Arizona Experience (www.arizonaexperience.org) was initially intended to serve as the web presence for the physical museum, but as delays occurred with the physical museum, the site has quickly developed an identify of its own as an interactive, multimedia experience, reaching a wider audience with functions that would be difficult or expensive to produce in a museum. As leaders in scientific and technological innovation in the state, the Arizona Geological Survey was tasked with designing and creating the Arizona Experience site. The general themes remain the same; however, the site has added content and applications that are better suited to the online environment in order to create a rich, dynamic supplement to a physical museum experience. The website offers the features and displays of the future museum with the interactive nature and learning environment of the web. This provides an encyclopedic overview of the State of Arizona by subject matter experts in a manner that is free and open to the public and erases socio-economic, political, and physical boundaries. Over the Centennial Year of 2012 the site will release a new theme and explore the people, land, and innovations that shape the themes. Themes include (in order of release) Celebrates, Mining & Minerals, Biotech & Life Sciences, Sports & Recreation, Energy, Water, Technology & Aerospace, People & Culture, Ranching & Agriculture, Native American Culture, Astronomy, 21st Century Workforce, and a Best of 2012 release. The materials developed for the site come from content matter experts across the state including academic institutions, historical societies, museums, and professional associations. Currently there are over 300 content providers contributing resources, data, and videos to the site. AZGS interactions with science and technology organizations, associations, and businesses have been critical as we work to engage visitors and industry with the opportunities in Arizona, and translate innovative research and scientific application for a more generalized audience. In addition, we are involving K-12 educators in using the site content and cutting edge technology for developing classroom STEM related content linked to curriculum subject areas.

Allison, M. L.; Davis, R.; Conway, F. M.; Bellasai, R.

2012-12-01

299

Aesthetic experience of dance performances  

Directory of Open Access Journals (Sweden)

Full Text Available In this study the aesthetic experience of dance performances is investigated. The study includes construction of an instrument for measuring the aesthetic experience of dance performances and an investigation of the structure of both dancers’ and spectators’ aesthetic experience. The experiments are carried out during eight different performances of various dance forms, including classical ballet, contemporary dance, flamenco and folklore. Three factors of aesthetic experience of dance performances are identified: Dynamism, Exceptionality and Affective Evaluation. The results show that dancers’ aesthetic experience has a somewhat different factorial structure from that of the spectators’. Unlike spectators’ aesthetic experience, dancers’ aesthetic experience singles out the Excitement factor. The results are discussed within the context of dancers’ proprioception and spectators’ exteroception since these findings confirm the idea of a significant role of proprioception in dancers’ aesthetic experience.

Vukadinovi? Maja

2012-01-01

300

Experiment Documentation Formats for Project 4625, Space Experiments Support Program.  

Science.gov (United States)

The goal of the document and revisions thereof is to define a set of succinct complementary space experiment questionnaires which will allow Project 4625, the Space Experiments Support Program (SESP), to gather management and space vehicle integration inf...

D. F. Adamski

1966-01-01

 
 
 
 
301

Sharing ESA's knowledge and experience - the Erasmus Experiment Archive  

Science.gov (United States)

The Erasmus Experiment Archive is an electronic database, that collects all experiments performed to date in the faciliteis that fall under the responsibility of the ESA (human spaceflight, microgravity, exploration).

Isakeit, Dieter; Sabbatini, Massimo; Carey, William

2004-11-01

302

ATRAP antihydrogen experiments  

International Nuclear Information System (INIS)

Antihydrogen (Hbar) was first produced at CERN in 1996. Over the past decade our ATRAP collaboration has made massive progress toward our goal of producing large numbers of cold Hbar atoms that will be captured in a magnetic gradient trap for precise comparison between the atomic spectra of matter and antimatter. The AD at CERN provides bunches of 3 x 107 low energy Pbars every 100 seconds. We capture and cool to 4 K, 0.1% of these in a cryogenic Penning trap. By stacking many bunches we are able to do experiments with 3 x 105 Pbars. ?100 e+/sec from a 22Na radioactive source are captured and cooled in the trap, with 5 x 106 available experiments.We have developed 2 ways to make Hbar from these cold ingredients, namely 3-body collisions, and 2-stage Rydberg charge exchange. In the first case, Pbars are injected into a nested trap containing e+. Hbar is formed when 2 e+ and 1 Pbar collide. In 2-stage Rydberg charge exchange, laser-excited caesium (Cs) enters the trap through a small hole. Rydberg positronium is formed when a e+ captures an e-from a Cs. These atoms exit the trap, some passing through a nearby cloud of cold Pbars. A 2nd charge-exchange results when a Pbar captures the e+, forming Hbar. We have also developed techniques to measure the excited-state distribution of the Hbar and measure their velocity. I will present results from these experiments and discuss the next generation of apparatus to be commissioned this year. This new apparatus includes a e+ accumulator built at York University providing many more e+. The new Pbar annihilation detector provides spatial information of annihilations. Windows allow lasers to enter the trap for spectroscopic measurements and for laser cooling of the Hbar. Possibly the most exciting inclusion in this new apparatus is the inclusion of a neutral particle trap which may, for the first time, capture the Hbar and lead to the first atomic spectrum from antimatter. (copyright 2007 WILEY-VCH Verlag GmbH and Co. KGaA, Weinheim) (orig.)

2006-07-23

303

Co-experience: understanding user experiences in interaction  

Digital Repository Infrastructure Vision for European Research (DRIVER)

The topic of this article-based dissertation is the definition of user experience in user centred design. In particular, the work discusses user experiences in social interaction. To provide a framework for understanding these experiences, the concept co-experience borrows from symbolic interactionism, a theory of meaning in social interaction. The work in general follows a pragmatist philosophy. The cases in the study include one large field study on mobile multimedia messaging, one smaller ...

Battarbee, Katja

2004-01-01

304

American Experience: Earth Days  

Science.gov (United States)

In late 1969, Wisconsin Senator Gaylord Nelson hired Denis Hayes to organize a national teach-in day about the importance of protecting the environment for future generations. On April 22, 1970, the first Earth Day was held and over 20 million Americans participated via a variety of celebrations and demonstrations. This website is designed to be a companion to the American Experience documentary on the history of Earth Day, and it includes a teacher's guide, several special interviews, and the documentary in its entirety. The film was directed by Robert Stone, and it serves as "a poetic meditation on man's complex relationship with nature and an engaging history...of groundbreaking eco-activism." On the homepage, visitors should also take note of the photo gallery, the interactive timeline of the modern environmental movement, and a telling interview with the father of the "Green Revolution", Norman Borlaug. Visitors are also encouraged to share their own Earth Day memories on the site.

305

Nonlinear dynamics experiments  

Energy Technology Data Exchange (ETDEWEB)

The goal of nonlinear dynamics experiments is to improve the understanding of single particle effects that increase the particle amplitude and lead to loss. Particle motion in storage rings is nearly conservative and for transverse dynamics the Hamiltonian in action angle variables (I{sub x},I{sub y},{phi}{sub x},{phi}{sub y}) near an isolated resonance k{nu}{sub x} + l{nu}{sub y} {approx} p is H = I{sub x}{nu}{sub x0} + I{sub y}{nu}{sub y0} + g(I{sub x}, I{sub y}) + h(I{sub x}, I{sub y})cos(k{phi}{sub x} + l{phi}{sub y} - p{theta}), (1) where k, l, p are integers, {theta} = 2{pi}s/L is the azimuth, and s and L are the path length and circumference respectively. The amplitude dependent tunes are given by {nu}{sub x,y}(I{sub x},I{sub y}) = {nu}{sub x0,y0} + {partial_derivative}g(I{sub x},I{sub y})/{partial_derivative}I{sub x,y} (2) and h(I{sub x},I{sub y}) is the resonance driving term (RDT). If the motion is governed by multiple resonances, h(I{sub x},I{sub y}) has to be replace by a series of terms. The particle motion is completely determined by the terms g and h, which can be calculated from higher order multipoles (Sec. ??), or obtained from simulations. Deviations from pure Hamiltonian motion occur due to synchrotron radiation damping (Sec. ??) in lepton or very high energy hadron rings, parameter variations, and diffusion processes such as residual gas and intrabeam scattering. The time scale of the non-Hamiltonian process determines the applicability of the Hamiltonian analysis. Transverse nonlinearities are introduced through sextupoles or higher order multipoles and magnetic field errors in dipoles and quadrupoles. Sextupoles can already drive all resonances. The beam-beam interaction and space charge also introduce nonlinear fields. Intentionally introduced nonlinearities are used to extract beam on a resonance or through capture in stable islands. Localization and minimization of nonlinearities in a ring is a general strategy to decrease emittance growth and increase the beam lifetime. The minimization of nonlinear effects can be done locally or globally. Except for resonant extraction, amplitude increase and particle loss is the result of chaotic particle motion. Large chaotic regions allow particles to increase their amplitudes, and ensures their ultimate loss. However, chaotic particles can, on average, still survive the time period of interest, i.e. the storage time. Nonlinear dynamics experiments aim to determine either the detuning and driving terms g and h directly, or their effect on other quantities. Nonlinear phenomena observed in experiments include phase space deformations and resonant islands in Poincare surfaces of section, nonlinear phase advances, amplitude detuning g, decoherence (Sec. ??), resonance driving terms h, smear, halo formation, echoes (Sec. ??), the tune response matrix, dynamic aperture (Sec. ??), emittance growth, and particle loss. Nonlinear experiments can also be done in the longitudinal plane.

Fischer, W.

2011-01-01

306

Reactor operation experience  

International Nuclear Information System (INIS)

Since the TRIGA Users Conference in Helsinki 1970 the TRIGA reactor Vienna was in operation without any larger undesired shutdown. The integrated thermal power production by August 15 1972 accumulated to 110 MWd. The TRIGA reactor is manly used for training of students, for scientific courses and research work. Cooperation with industry increased in the last two years either in form of research or in performing training courses. Close cooperation is also maintained with the IAEA, samples are irradiated and courses on various fields are arranged. Maintenance work was performed on the heat exchanger and to replace the shim rod magnet. With the view on the future power upgrading nine fuel elements type 110 have been ordered recently. Experiments, performed currently on the reactor are presented in details

1972-09-13

307

205Tl experiment  

International Nuclear Information System (INIS)

205Tl has been previously proposed as a geological detector for solar neutrinos, making use of the reaction 205Tl(nu, e-)205Pb with a neutrino threshold of only approx. = 43 keV. We report on an experiment performed to study the feasibility of detecting radioactive 205Pb nuclei (T/sub 1/2/ = 15 million years) at very low concentrations using the recently developed technique of accelerator mass spectrometry. Employing the high-energy ion beams of good quality from the UNILAC heavy-ion accelerator at the GSI Darmstadt, we are able to demonstrate a suppression of neighbouring isotopes to better than 1 in 1016 and of neighbouring elements to about 1 in 103. While these results are very encouraging, the minimum number of atoms detectable is still severely limited by the efficiency of producing multiply-charged ions from present ion sources. Future improvements in ion-source performance are briefly discussed

1984-08-23

308

Limit experiments of GARCH  

CERN Document Server

GARCH is one of the most prominent nonlinear time series models, both widely applied and thoroughly studied. Recently, it has been shown that the COGARCH model (which was introduced a few years ago by Kl\\"{u}ppelberg, Lindner and Maller) and Nelson's diffusion limit are the only functional continuous-time limits of GARCH in distribution. In contrast to Nelson's diffusion limit, COGARCH reproduces most of the stylized facts of financial time series. Since it has been proven that Nelson's diffusion is not asymptotically equivalent to GARCH in deficiency, in the present paper, we investigate the relation between GARCH and COGARCH in Le Cam's framework of statistical equivalence. We show that GARCH converges generically to COGARCH, even in deficiency, provided that the volatility processes are observed. Hence, from a theoretical point of view, COGARCH can indeed be considered as a continuous-time equivalent to GARCH. Otherwise, when the observations are incomplete, GARCH still has a limiting experiment, which we ...

Buchmann, Boris; 10.3150/10-BEJ328

2012-01-01

309

The Double Chooz Experiment  

Energy Technology Data Exchange (ETDEWEB)

The Double Chooz neutrino oscillations experiment is expected to measure, or limit, the unmeasured leptonic mixing angle {theta}{sub 13} using neutrinos from the Chooz reactor complex (France). The experimental technique relies on two detectors to reduce the so far dominating neutrino flux uncertainty as well as backgrounds. The DC sensitivity (at 90%CL) is sin{sup 2}(2{theta}{sub 13})<0.054 and sin{sup 2}(2{theta}{sub 13})<0.030, for the far detector only (1.5 years) and near/far detectors (3 years), respectively. The far detector is to be filled and completed by the end 2010, while data taking has started since June 2010 (without scintillator).

Cabrera, A. [CNRS/IN2P3 - Laboratoire d' Astro-Particules et Cosmologie, Paris (France)

2012-08-15

310

Coblation Tonsillectomy our experience  

Directory of Open Access Journals (Sweden)

Full Text Available Tonsillectomy happens to be the commonly performed surgery these days. Like any other surgical procedure this surgical procedure has also undergone tremendous technological changes. One such evolving change happens to be coblation tonsillectomy. Coblation technology is actually an offshoot of radiofrequency surgery. This technique involves passing radiofrequency energy through a conductive medium like isotonic sodium chloride or potassium chloride solution. This produces a plasma field which is composed of sodium and hydroxyl ions which ablates tissue. This tissue ablation takes place at (60-70° C which is much lower than that achieved during other electro surgical techniques (400 – 600° C. This article attempts to discuss the use of this technology to perform tonsillectomy with special emphasis on sharing our experience with the system. This study involves critical appraisal of 25 coblation tonsillectomy surgeries performed at Stanley Medical college during the year 2013.

Balasubramanian Thiagarajan

2014-03-01

311

INITIAL COOLING EXPERIMENT (ICE)  

CERN Document Server

ICE was built in 1977, using the modified bending magnets of the g-2 muon storage ring (see 7405430). Its purpose was to verify the validity of stochastic and electron cooling for the antiproton project. Stochastic cooling proved a resounding success early in 1978 and the antiproton project could go ahead, now entirely based on stochastic cooling. Electron cooling was experimented with in 1979. The 26 kV equipment is housed in the cage to the left of the picture, adjacent to the "e-cooler" located in a straight section of the ring. With some modifications, the cooler was later transplanted into LEAR (Low Energy Antiproton Ring) and then, with further modifications, into the AD (Antiproton Decelerator), where it cools antiprotons to this day (2006). See also: 7711282, 7802099, 7809081.

1979-01-01

312

Experiments in vortex avalanches  

CERN Document Server

Avalanche dynamics is found in many phenomena spanning from earthquakes to the evolution of species. It can be also found in vortex matter when a type II superconductor is externally driven, for example, by increasing the magnetic field. Vortex avalanches associated with thermal instabilities can be an undesirable effect for applications, but "dynamically driven" avalanches emerging from the competition between intervortex interactions and quenched disorder constitute an interesting scenario to test theoretical ideas related with non-equilibrium dynamics. However, differently from the equilibrium phases of vortex matter in type II superconductors, the study of the corresponding dynamical phases - in which avalanches can play a role - is still in its infancy. In this paper we critically review relevant experiments performed in the last decade or so, emphasizing the ability of different experimental techniques to establish the nature and statistical properties of the observed avalanche behavior.

Altshuler, E

2004-01-01

313

The 'DANTE' experiment  

Science.gov (United States)

The selective excitation scheme known as 'DANTE' emerged from a confluence of several ideas for new NMR experiments, some more fanciful than others. DANTE offers a simple and effective way to restrict excitation to a very narrow frequency band, usually that of a single resonance line. Initially applied to the study of individual proton-coupled carbon-13 spin multiplets, the method has been extended to water presaturation, relaxation measurements, and chemical exchange studies. Through the imposition of a magnetic field gradient it offers a simple method to enhance resolution by restricting the effective volume of the sample. Multiple DANTE excitation (with Hadamard encoding) can speed up multidimensional spectroscopy by orders of magnitude. Applied to magnetic resonance imaging, the DANTE sequence has been used to superimpose a rectangular grid onto a cardiac image, permitting motional distortions to be monitored in real time.

Freeman, Ray; Morris, Gareth A.

2011-12-01

314

The ZEPHYR experiment  

International Nuclear Information System (INIS)

ZEPHYR is a compact high-density high-field tokamak experiment presently designed in Garching. The primary aims are to study and control the dynamics of thermonuclear burn in different density-temperature regimes. Neutral injection and successive adiabatic compression is foreseen for producing the ignited plasma. The toroidal field magnet uses steel enforced copper conductors in order to reach 9.1 T on axis of the compressed plasma. The conductors are cryogenically cooled to liquid nitrogen temperature in order to produce a pulse length of approximately 10 energy confinement times. In the following the design and optimization procedures, their consequences and the technical aspects of the tokamak and peripheric systems are described. (author)

1981-01-01

315

Experiments of reactivity inserts  

International Nuclear Information System (INIS)

Experiments of reactivity insertion have been performed in the IPEN-MB-01 critical facility. Small Cd rods were built with control mecanisms similar to control rods, so that a wide range of reactivity could be inserted into the core. Reactivity insertions in a step fashion were obtained by dropping the Cd rods from the middle to outside of the core. The signals of two detectors monitoring the transient were analyzed through inverse kinetics after verifying that the possible spatial redistribution of the neutron flux would not invalidate such analysis. The reactivity value obtained for the perturbation via a differential control rod worth curve differed only 1.6% from the inverse kinetics estimate. (author)

1991-09-17

316

Reviewing operational experience feedback  

International Nuclear Information System (INIS)

The purpose of this document is to provide detailed supplementary guidance to OSART experts to aid in the evaluation of operational experience feedback (OEF) programmes at nuclear power plants. The document begins by describing the objectives of an OEF programme. It goes on to indicate preparatory work and investigatory guidance for the expert. Section 5 describes attributes of an excellent OEF programme. Appended to these guidelines are examples of OEF documents from various plants. These are intended to help the expert by demonstrating the actual implementation of OEF in practice. These guidelines are in no way intended to conflict with existing national regulations and rules. A comprehensive OEF programme, as described in Section 2, would be impossible to evaluated in detail in the amount of time typically allocated for assessing OEF in an OSART review. The expert must use his or her time wisely by concentrating on those areas that appear to be the weakest

1991-01-01

317

Streamer chamber experiments  

International Nuclear Information System (INIS)

The reactions _4_0Ar + KCl at eight energies from 0.36 to 1.8 GeV/u, _4He + KCl at .977 and _4_0Ar + BaI"2 and _4_0Ar + Pb"3O"4 at .772 GeV/u measured in a Streamer Chamber experiment have been analyzed to determine the stopping power of nuclei, the degree of isotropy and thermalization achieved in central collisions, to search for collective expansion effects and to obtain compressional energies of bulk nuclear matter. Observables used were pion and proton exclusive final state measurements, ratios of total transverse to longitudinal momentum per event, momentum flux and ? production. From the systematic discrepancy of the ?-multiplicities produced in central collisions with respect to an intranuclear cascade model, compressional energies are extracted which fit a parabolic form of the nuclear matter equation of state with a compressibility constant of K = 240 MeV. (orig.)

1982-01-01

318

Recent BWR fuel experience  

Energy Technology Data Exchange (ETDEWEB)

Boiling water reactor fuel has, until recently, been designed for bundle average target discharge exposures of --28 GWd/tonne. These designs used Zircaloy cladding, which was susceptible to stress corrosion cracking failures induced by pellet/cladding interaction (PCI) during large power increases. To mitigate the effect of PCI, operational guidelines that reduced the rate and magnitude of power increase were utilized. These were successful in eliminating most of the PCI failures. However, the slow rates of power ascent, the frequency of repetition, and restrictions on control blade withdrawal resulted in loss of capacity. In addition, under certain conditions of duty, environment, and material corrosion behavior, this fuel could also experience crud-induced-localized-corrosion (CILC), which caused cladding perforation and release of fission products to the coolant (failure).

Noble, L.D.; Baily, W.E.; Fischer, D.L.; Wood, J.E.; Proebstle, R.A.

1987-01-01

319

Recent BWR fuel experience  

International Nuclear Information System (INIS)

Boiling water reactor fuel has, until recently, been designed for bundle average target discharge exposures of --28 GWd/tonne. These designs used Zircaloy cladding, which was susceptible to stress corrosion cracking failures induced by pellet/cladding interaction (PCI) during large power increases. To mitigate the effect of PCI, operational guidelines that reduced the rate and magnitude of power increase were utilized. These were successful in eliminating most of the PCI failures. However, the slow rates of power ascent, the frequency of repetition, and restrictions on control blade withdrawal resulted in loss of capacity. In addition, under certain conditions of duty, environment, and material corrosion behavior, this fuel could also experience crud-induced-localized-corrosion (CILC), which caused cladding perforation and release of fission products to the coolant (failure)

1987-09-03

320

Moessbauer experiments, ch. 1  

International Nuclear Information System (INIS)

The magnetic properties of iron base alloys have been investigated as a function of the concentrations of the sp-elements Al, Si, Ga, Ge, As, Sn, and Sb. An extensive description of the Moessbauer Effect Spectroscopy (MES) technique is given. The results of MES experiments at room temperature for FeX alloys (X stands for one of the sp-elements) and impurity concentrations of 1, 3 and 5 a/o are presented. Through temperature dependant measurements the hyperfine fields H ((m,n)T) at iron nuclei in different surroundings are obtained. The change of the Curie temperature of the various dilute iron-base alloys, with respect to pure iron, as a function of the impurity concentration is investigated. Average magnetic hyperfine fields and isomer shifts measured at "1"1"9Sn nuclei in Fe"1"1"9Sn are discussed

1977-10-07

 
 
 
 
321

Information sciences experiment system  

Science.gov (United States)

The rapid expansion of remote sensing capability over the last two decades will take another major leap forward with the advent of the Earth Observing System (Eos). An approach is presented that will permit experiments and demonstrations in onboard information extraction. The approach is a non-intrusive, eavesdropping mode in which a small amount of spacecraft real estate is allocated to an onboard computation resource. How such an approach allows the evaluation of advanced technology in the space environment, advanced techniques in information extraction for both Earth science and information science studies, direct to user data products, and real-time response to events, all without affecting other on-board instrumentation is discussed.

Katzberg, Stephen J.; Murray, Nicholas D.; Benz, Harry F.; Bowker, David E.; Hendricks, Herbert D.

1990-01-01

322

RHINOSPORIDIOSIS OUR EXPERIENCE  

Directory of Open Access Journals (Sweden)

Full Text Available This article discusses the personal experience of author in the management of rhinosporidiosis.Living in an endemic area of disease the author had the privilege of managing about 200 cases of rhinosporidiosis during 2005 to 2010. Commonest area of involvement happened to be nasal cavity.Inside the nasal cavity rhinosporidiosis was commonly seen arising from inferior meatus. All these patients gave history of bathing in ponds which could account for the common etiopathogenic factor. All the cases were managed by surgical resection followed by 9 months course of T Dapsone to minimize risk of recurrence. Despite these measures the author had a recurrence rate of about 19%. Imaging really provided a road map as majority of these lesions were removed endoscopically.

Balasubramanian Thiagarajan

2011-09-01

323

A European experiment  

International Nuclear Information System (INIS)

The Joint European Torus (JET) is an experiment in nuclear fusion research which was planned as a joint effort between national research laboratories and Euratom. Before approval was given for it to be built it became a political football in the European Communities. This book describes the background against which JET was conceived, designed and planned. It gives a chronological account of the political imbroglio which followed between 1975 and 1978 and indicates how close the project came to collapse at one point. In addition to the two years' delay caused by Ministerial conflicts over its siting, the project suffered many compromises in its financing, its staffing and its organisation. An account is given of the unique structure of the European Communities and its procedures, which shows how idealism constantly faces reality. The role of Euratom is discussed, taking into account the difference between its approach to applications of nuclear fission as opposed to those of nuclear fusion. (author)

324

The Stanford experiment  

International Nuclear Information System (INIS)

The central element of the Stanford relativity experiment is a cryogenic gyroscope with a performance in space many orders of magnitude superior to that of conventional earth-bound devices. In the early phases of the program, a great deal of thought was given to the problem of achieving the performance goal, and an entirely new gyro concept was developed based on the application of cryogenic techniques to electrostatic gyroscopes. In this paper the authors describe the construction of the gyroscope, outline its development into an operational laboratory device, and present some of the results obtained with it. They also give a brief account of the torque analysis which demonstrates that it is feasible to make a gyroscope with the desired performance

1988-01-01

325

Experience in scheduled maintenance  

International Nuclear Information System (INIS)

As outage management affects both the cost and reliability of a nuclear power plant, performance of a scheduled maintenance outage in an efficient and effective manner is an important task in the operation of nuclear power plant. This paper covers the experience gained in the past ten refueling outages for the two BWR units at the First Nuclear Power Station of Taipower. The key to optimizing both the cost and schedule of a refueling outage is to maintain a high level of quality workmanship. The outage management in planning, scheduling, preparation, coordination, and cooperation, accompanied by the qualified in-house capability and sufficient outside support, have placed the refueling outages at the FNPS in a well controlled situation and have established the capacity factors of these two BWR units at a level which is 20% higher than the world average in the past years

1985-05-19

326

Spherical torus experiment (STX)  

Energy Technology Data Exchange (ETDEWEB)

The principal engineering features of the proposed Spherical Torus Experiment (STX) are described. Design is dominated by the small bore available for the ohmic heating (OH) solenoid and structural considerations for a situation in which B/sub p/ is approximately equal to B/sub t/. Unique features of a spherical torus plasma include large elongations without shaping fields; an exceptionally high ratio of plasma current to toroidal field, giving the potential for stability at very high beta; strong paramagnetism; and a variety of configurations, ranging from tokamak (q/sub a/) to revised-field pinch (RFP) (q/sub a/ < 1). Access to this regime requires aspect ratios less than 2. A feasibility study has been done for a beam-heated device with A = 1.67, R0 = 0.45, and K = 2. 3 refs., 9 figs.

McManamy, T.J.; Lazarus, E.A.

1985-01-01

327

Spherical torus experiment (STX)  

International Nuclear Information System (INIS)

The principal engineering features of the proposed Spherical Torus Experiment (STX) are described. Design is dominated by the small bore available for the ohmic heating (OH) solenoid and structural considerations for a situation in which B/sub p/ is approximately equal to B/sub t/. Unique features of a spherical torus plasma include large elongations without shaping fields; an exceptionally high ratio of plasma current to toroidal field, giving the potential for stability at very high beta; strong paramagnetism; and a variety of configurations, ranging from tokamak (q/sub a/) to revised-field pinch (RFP) (q/sub a/ < 1). Access to this regime requires aspect ratios less than 2. A feasibility study has been done for a beam-heated device with A = 1.67, R_0 = 0.45, and K = 2. 3 refs., 9 figs

1985-11-18

328

Field services experiences  

International Nuclear Information System (INIS)

Combustion Engineering (C-E) is a large diversified manufacturer of products and services for the energy field. At this time, C-E has supplied the nuclear steam supply systems for eleven operating nuclear power plants with two additional units currently undergoing start-up testing. The focus of C-E's commitment in the nuclear power plant services area is the Nuclear Services organization within the Nuclear Power Systems Division. The Nuclear Services organization provides services on a timely cost efficient basis; and dedicates resources to developing new products and services which are truly responsive to the needs of operating power plants world wide. In the paper, C-E's capabilities and experience in the field of nuclear services are described. Highlighted are our capabilities in the areas of transition management services, operating services and engineering services

1985-05-19

329

Wake field acceleration experiments  

Energy Technology Data Exchange (ETDEWEB)

Where and how will wake field acceleration devices find use for other than, possibly, accelerators for high energy physics. I don't know that this can be responsibly answered at this time. What I can do is describe some recent results from an ongoing experimental program at Argonne which support the idea that wake field techniques and devices are potentially important for future accelerators. Perhaps this will spawn expanded interest and even new ideas for the use of this new technology. The Argonne program, and in particular the Advanced Accelerator Test Facility (AATF), has been reported in several fairly recent papers and reports. But because this is a substantially new audience for the subject, I will include a brief review of the program and the facility before describing experiments. 10 refs., 7 figs.

Simpson, J.D.

1988-01-01

330

Wake field acceleration experiments  

International Nuclear Information System (INIS)

Where and how will wake field acceleration devices find use for other than, possibly, accelerators for high energy physics? I don't know that this can be responsibly answered at this time. What I can do is describe some recent results from an ongoing experimental program at Argonne which support the idea that wake field techniques and devices are potentially important for future accelerators. Perhaps this will spawn expanded interest and even new ideas for the use of this new technology. The Argonne program, and in particular the Advanced Accelerator Test Facility (AATF), has been reported in several fairly recent papers and reports. But because this is a substantially new audience for the subject, I will include a brief review of the program and the facility before describing experiments. 10 refs., 7 figs

1988-11-07

331

Tritium neutrino mass experiments  

International Nuclear Information System (INIS)

The current status of the experimental search for neutrino mass is reviewed, with emphasis on direct kinematic methods, such as the beta decay of tritium. The situation concerning the electron neutrino mass as measured in tritium beta decay is essentially unchanged from a year ago, although a great deal of experimental work is in progress. The ITEP group continues to find evidence for a nonzero mass, now slightly revised to 26(5) eV. After correcting for recently discovered errors in the energy loss distribution and source thickness, however, the Z/umlt u/rich group still claims and upper limit of 18 eV. There may be evidence for neutrino mass and mixing in the SN1987a data, in the same range suggested by the ITEP experiment. 42 refs., 3 figs

1988-04-27

332

CBM Experiment at FAIR  

International Nuclear Information System (INIS)

The Compressed Baryonic Matter (CBM) project at the future accelerator center FAIR will be a dedicated heavy-ion experimental operating in fixed target mode at beam energies from 8 to 45 AGeV. The ultimate goal of the research program is to explore the QCD phase diagram in the range of moderate temperature but the highest net-baryon densities. The CBM detector concept aims to obtain feasibility of measurement of hadronic, leptonic and photonic observables at interaction rates up to 10 MHz. It will allow to detect extremely rare probes such as charm near its production threshold. The CBM experiment will enter a new era with diagnostic probes never accessible before in the FAIR energy range, and thus has a unique research potential. (author)

2010-02-01

333

Baryon conservation (experiments)  

International Nuclear Information System (INIS)

Proton decay as a generic term is here defined to include the decay of neutrons which have been stabilized against BETA-decay by nuclear binding. A history of proton stability is thus presented by means of a an annotated chronolgy and tables based on questionnaries. The latter supplied by research groups planning proton lifetime experiments outside the USA. Each of seven tables present location, depth, weight of detector, method of detection, Partial Lifetime Limits Obtainable, and Present Status and/or Time when (Preliminary) Results are Expected from each of the collaborative institutions. The latter include Frascati-Milano-Torino, Frascati-Milano-Rome-Torino, Orsay-Ecole Polytechnique-Saclay, Torino-Moscow-Frascati, Bombay-Osaka-Tokyo, and two locations reported on by the Institute for Nuclear Research of the Academy of Sciences of the USSR. Survey reports on other institutions are also given, imcluding universities

1982-01-01

334

TFTR DT experiments  

International Nuclear Information System (INIS)

The Tokamak Fusion Test Reactor (TFTR) is a large tokamak which has performed experiments with 50:50 deuterium-tritium fuelled plasmas. Since 1993, TFTR has produced about 1090 D-T plasmas using about 100 grams of tritium and producing about 1.6 GJ of D-T fusion energy. These plasmas have significant populations of 3.5 MeV alphas (the charged D-T fusion product). TFTR research has focused on alpha particle confinement, alpha driven modes, and alpha heating studies. Maximum D-T fusion power production has aided these studies, requiring simultaneously operation at high input heating power and large energy confinement time (to produce the highest temperature and density), while maintaining low impurity content. The principal limitation to the TFTR fusion power production was the disruptive stability limit. Secondary limitations were the confinement time, and limiter power handling capability. (author)

1997-12-01

335

The VIP experiment  

Energy Technology Data Exchange (ETDEWEB)

The VIP (Violation of the Pauli Exclusion Principle) experiment is dedicated to check the validity of one of the basic principles of modern physics. This investigation is done searching for anomalous X-rays emitted by copper atoms in a conductor: any detection of these anomalous X-rays would mark a Pauli forbidden transition. VIP is currently taking data at the Gran Saso underground laboratories, and its scientific goal is to improve by three-four orders of magnitude the previous limit on the probability of Pauli violating transitions, bringing it into the 10{sup -29} to {sup -30} region. The new experimental results and future plans are presented. The PDF file for this article was corrected and the names and affiliations were amended on 4 September 2009.

Bartalucci, S; Bertolucci, S; Catitti, M; Curceanu, C; Matteo, S Di; Guaraldo, C; Iliescu, M; Pietreanu, D; Sirghi, D L; Sirghi, F; Sperandio, L; Doce, O Vasquez [Laboratori Nazionali di Frascati dell' INFN, CP 13, Via E. Fermi 40, I-00044, Frascati (Italy); Bragadireanu, M; Ponta, T [' Horia Hulubei' National Institute of Physics and Nuclear Engineering, Str. Atomistilor no. 407, PO Box MG-6, Bucharest - Magurele (Romania); Cargnelli, M; Ishiwatari, T; Marton, J [Stefan Meyer Institute for Subatomic Physics, Boltzmanngasse 3, A-1090 Vienna (Austria); Egger, J-P [Institut de Physique de l' Universite, CH-2000 Neuchatel (Switzerland); Laubenstein, M [Laboratori Nazionali del Gran Sasso, S.S. 17/bis, I-67010 Assergi (Italy); Milotti, E, E-mail: dorel.pietreanu@lnf.infn.i [Dipartimento di Fisica, Universita di Trieste and INFN- Sezione di Trieste, Via Valerio, 2, I-34127 Trieste (Italy)

2009-06-01

336

Industrial experience with titanium  

International Nuclear Information System (INIS)

Titanium is a reference material for the construction of waste containers in the Canadian Nuclear Fuel Waste Management Program. It has been in industrial service for over 30 a, often in severe corrosion environments, but it is still considered a relatively exotic material with limited operating history. This has arisen because of the aerospace applications of this material and the misconception that the high strength-to-weight ratio dominates the choice of this material. In fact, the advantage of titanium lies in its high reliability and excellent corrosion resistance. It has a proven record in seawater heat exchanger service and a demonstrated excellent reliability even in polluted water. For many reasons it is the technically correct choice of material for marine applications. In this report we review the industrial service history of titanium, particularly in hot saline environments, and demonstrate that it is a viable waste container material, based upon this industrial service history and operating experience. (author)

1997-01-01

337

Results from LHCf Experiment  

Directory of Open Access Journals (Sweden)

Full Text Available The LHCf experiment has taken data in 2009 and 2010 p-p collisions at LHC at ?s = 0.9 TeV and ?s = 7 TeV. The measurement of the forward neutral particle spectra produced in proton-proton collisions at LHC up to an energy of 14 TeV in the center of mass system are of fundamental importance to calibrate the Monte Carlo models widely used in the high energy cosmic ray (HECR field, up to an equivalent laboratory energy of the order of 1017 eV. In this paper the first results on the inclusive photon spectrum measured by LHCf is reported. Comparison of this spectrum with the model expectations show significant discrepancies, mainly in the high energy region. In addition, perspectives for future analyses as well as the program for the next data taking period, in particular the possibility to take data in p-Pb collisions, will be discussed.

Tricomi Alessia

2012-06-01

338

The Cibola flight experiment  

Energy Technology Data Exchange (ETDEWEB)

The Cibola Flight Experiment (CFE) is an experimental small satellite carrying a reconfigurable processing instrument developed at the Los Alamos National Laboratory that demonstrates the feasibility of using FPGA-based high-performance computing for sensor processing in the space environment. The CFE satellite was launched on March 8, 2007 in low-earth orbit and has operated extremely well since its deployment. The nine Xilinx Virtex FPGAs used in the payload have been used for several high-throughput sensor processing applications and for single-event upset (SEU) monitoring and mitigation. This paper will describe the CFE system and summarize its operational results. In addition, this paper will describe the results from several SEU detection circuits that were performed on the spacecraft.

Caffrey, Michael Paul [Los Alamos National Laboratory; Nelson, Anthony [Los Alamos National Laboratory; Salazar, Anthony [Los Alamos National Laboratory; Roussel - Dupre, Diane [Los Alamos National Laboratory; Katko, Kim [Los Alamos National Laboratory; Palmer, Joseph [ISE-3; Robinson, Scott [Los Alamos National Laboratory; Wirthlin, Michael [BRIGHAM YOUNG UNIV; Howes, William [BRIGHAM YOUNG UNIV; Richins, Daniel [BRIGHAM YOUNG UNIV

2009-01-01

339

Voyager imaging experiment  

Science.gov (United States)

The overall objective of this experiment is exploratory reconnaissance of Jupiter, Saturn, their satellites, and Saturn's rings. Such reconnaissance, at resolutions and phase angles unobtainable from Earth, can be expected to provide much new data relevant to the atmospheric and/or surface properties of these bodies. The experiment also has the following specific objectives: Observe and characterize the global circulation of the atmospheres of Jupiter and Saturn; Determine the horizontal and vertical structure of the visible clouds and establish their relationship to the belted appearance and dynamical properties of the planetary atmospheres; Determine the vertical structure of high, optically-thin, scattering layers on Jupiter and Saturn; Determine the nature of anomalous features such as the Great Red Spot, South Equatorial Belt disturbances, etc.; Characterize the nature of the colored material in the clouds of Jupiter and Saturn, and identify the nature and sources of chromophores on Io and Titan; Perform comparative geologic studies of many satellites at less than 15-km resolution; Map and characterize the geologic structure of several satellites at high resolution (???1 km); Investigate the existence and nature of atmospheres on the satellites; Determine the mass, size, and shape of many of the satellites by direct measurement; Determine the direction of the spin axes and periods of rotation of several satellites, and establish coordinate systems for the larger satellites; Map the radial distribution of material in Saturn's rings at high resolution; Determine the optical scattering properties of the primaries, rings, and satellites at several wavelengths and phase angles; Search for novel physical phenomena, e.g., phenomena associated with the Io flux tube, meteors, aurorae, lightning, or satellite shadows. ?? 1977 D. Reidel Publishing Company.

Smith, B. A.; Briggs, G. A.; Danielson, G. E.; Cook, II, A. F.; Davies, M. E.; Hunt, G. E.; Masursky, H.; Soderblom, L. A.; Owen, T. C.; Sagan, C.; Suomi, V. E.

1977-01-01

340

The Armstrong experiment revisited  

Science.gov (United States)

When a high-voltage direct-current is applied to two beakers filled with water or polar liquid dielectrica, a horizontal bridge forms between the two beakers. This experiment was first carried out by Lord Armstrong in 1893 and then forgotten until recently. Such bridges are stable by the action of electrohydrodynamic (EHD) forces caused by electric field gradients counteracting gravity. Due to these gradients a permanent pumping of liquid from one beaker into the other is observed. At macroscopic scale several of the properties of a horizontal water bridge can be explained by modern electrohydrodynamics, analyzing the motion of fluids in electric fields. Whereas on the molecular scale water can be described by quantum mechanics, there is a conceptual gap at mesoscopic scale which is bridged by a number of theories including quantum mechanical entanglement and coherent structures in water - theories that we discuss here. Much of the phenomenon is already understood, but even more can still be learned from it, since such "floating" liquid bridges resemble a small high voltage laboratory of their own: The physics of liquids in electric fields of some kV/cm can be studied, even long time experiments like neutron or light scattering are feasible since the bridge is in a steady-state equilibrium and can be kept stable for hours. It is also an electro-chemical reactor where compounds are transported through by the EHD flow, enabling the study of electrochemical reactions under potentials which are otherwise not easily accessible. Last but not least the bridge provides the experimental biologist with the opportunity to expose living organisms such as bacteria to electric fields without killing them, but with a significant influence on their behavior, and possibly, even on their genome.

Fuchs, Elmar C.; Wexler, Adam D.; Paulitsch-Fuchs, Astrid H.; Agostinho, Luewton L. F.; Yntema, Doekle; Woisetschläger, Jakob

2014-04-01

 
 
 
 
341

The Digital Archive Experience  

DEFF Research Database (Denmark)

This article, as well as the book, investigates the ways in which new digital media may enhance the experience of the art-archive. Taken as a whole, the new media is a vital component of a 'transdisciplinary' and transformative field, a cultural landscape that is changing rapidly the conditions and domains of the archive and the (art)museum. How, then, should the functions and strengths of both archive and museum be shaped to meet those cultural and technological changes? When the Internet and world wide web became 'the place to be' commercially, museums followed suit and established their own sites. These can be coarsely divided into two categories: purely utilitarian websites with information about admission, hours of operation, directions, and the current show. The other - more ambitious - type of website tried to expand the exhibition area of the museum into virtual reality. The idea sounds great on paper but seldom succeeds in reality. Such websites often ignore the physical and social experience of a museum visit. Curiously, when they are most successful, websites often compete with the actual museum, possibly reducing the number of visitors and diluting the effect of seeing art first hand. The book discusses the challenges of the archive and the (art)museum in the age of digital media. It is based upon documentation from a research project, MAP - Media Art Platform, that drew upon the talents and collaboration of many institutions, artists, programmers, art historians, designers and others. The outcome of the project was presented at the exhibition TOTAL_ACTION - Art in the New Media Landscape at the Museum of Contemporary Art in Roskilde, Denmark, from October through November 2008.

Søndergaard, Morten

2009-01-01

342

Status of the MINOS experiment  

International Nuclear Information System (INIS)

The MINOS long-baseline neutrino oscillation experiment is presently under construction at the Soudan mine and the Fermi National Accelerator Laboratory. We report on the current status of the experiment, the projected schedule and its physics capabilities

2002-11-01

343

When an experiment is crucial?  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Although we accept that Physics is, as a last resort, an experimental science, the relationship between theory and experiment is far away from being trivial. Any experiment is always explained within a determinate theoretical context and, at the same time, an experiment can give suggestions for theories or even can bring new theoretical challenges. Thus, we cannot say without ambiguity when an experiment is a crucial one.

Pleitez, V.

1998-01-01

344

Experience representation in information systems  

Digital Repository Infrastructure Vision for European Research (DRIVER)

This thesis looks into the ways subjective dimension of experience could be represented in artificial, non-biological systems, in particular information systems. The pivotal assumption is that experience as opposed to mainstream thinking in information science is not equal to knowledge, so that experience is a broader term which encapsulates both knowledge and subjective, affective component of experience, which so far has not been properly embraced by knowledge representation theories. Th...

Kaczmarek, Jan

2014-01-01

345

THE EXPERIENCE OF ART – THE EMPIRIA OR EXPERIMENT?  

Directory of Open Access Journals (Sweden)

Full Text Available In contemporary aesthetics exists an belief, that the experience of art is the primary fact, which initiates and leads theoretical reflection, as also is the state basis of creating, valuing and the opinion on art. Present text is the test of philosophical recognition of relationship between field of products of new art as well as with context formative it experiences. Author motivates thesis, that radical changes in present art have their source in of meanings consisting on primary notion of experience changes. The present artistic practice goes away from aesthetical experience as empiria and the contemplation and used the notion of experience as experiment and investigation, which dismisses art from her proper functions and brings it rather to aggressive ideology of scientism. The recognition of this progressive change of meanings in founding the art notion of experience has the important consequences both for understanding of present art and for describing it theory.

Franciszek Chmielowski

2010-01-01

346

SPRUCE experiment data infrastructure  

Science.gov (United States)

The Carbon Dioxide Information Analysis Center (CDIAC) at Oak Ridge National Laboratory (ORNL), USA has provided scientific data management support for the US Department of Energy and international climate change science since 1982. Among the many data activities CDIAC performs are design and implementation of the data systems. One current example is the data system and network for SPRUCE experiment. The SPRUCE experiment (http://mnspruce.ornl.gov) is the primary component of the Terrestrial Ecosystem Science Scientific Focus Area of ORNL's Climate Change Program, focused on terrestrial ecosystems and the mechanisms that underlie their responses to climatic change. The experimental work is to be conducted in a bog forest in northern Minnesota, 40 km north of Grand Rapids, in the USDA Forest Service Marcell Experimental Forest (MEF). The site is located at the southern margin of the boreal peatland forest. Experimental work in the 8.1-ha S1 bog will be a climate change manipulation focusing on the combined responses to multiple levels of warming at ambient or elevated CO2 (eCO2) levels. The experiment provides a platform for testing mechanisms controlling the vulnerability of organisms, biogeochemical processes and ecosystems to climatic change (e.g., thresholds for organism decline or mortality, limitations to regeneration, biogeochemical limitations to productivity, the cycling and release of CO2 and CH4 to the atmosphere). The manipulation will evaluate the response of the existing biological communities to a range of warming levels from ambient to +9°C, provided via large, modified open-top chambers. The ambient and +9°C warming treatments will also be conducted at eCO2 (in the range of 800 to 900 ppm). Both direct and indirect effects of these experimental perturbations will be analyzed to develop and refine models needed for full Earth system analyses. SPRUCE provides wide range continuous and discrete measurements. To successfully manage SPRUCE data flow and support climate change research, CDIAC has designed flexible data collection system using proven network technologies and taking advantage of existing software components. The SPRUCE data system comprised primarily of a set of network components, relational database, a web server to monitor data collection status, FTP server and replication/backup arrangement. Later the data interface on the existing website will be expanded to allow users to query the SPRUCE collection in a variety of ways and then subset, visualize and download the data. From the perspective of data stewardship, on the other hand, this system is designed for CDIAC to easily control database content, automate data movement, track data provenance, manage metadata content, and handle additions and corrections. In this presentation, we share our approaches to meet the challenges of designing and constructing data system for managing sources of high volume in situ observations in a remote location. It will demonstrate the dataflow starting from the sensors and ending at the archiving/distribution points, discuss types of hardware and software used, and examine considerations that were used to choose them.

Krassovski, M.; Hanson, P. J.; Boden, T.; Riggs, J.; Nettles, W. R.; Hook, L. A.

2013-12-01

347

Irradiation experiment status and schedule  

International Nuclear Information System (INIS)

Principal features of many ADIP irradiation experiments are tabulated. Bar charts show the schedule for recent, current, and planned experiments. Experiments are presently under way in the Oak Ridge Research Reactor and the High Flux Isotope Reactor, which are mixed spectrum reactors, and in the Experimental Breeder Reactor, which is a fast reactor

1982-03-01

348

Shielding experiments for accelerator facilities  

International Nuclear Information System (INIS)

A series of shielding experiments was carried out by using AVF cyclotron accelerator of TIARA at JAERI in order to validate shielding design methods for accelerator facilities in intermediate energy region. In this paper neutron transmission experiment through thick shields and radiation streaming experiment through a labyrinth are reported. (author)

2000-06-01

349

Status of the MINOS experiment  

International Nuclear Information System (INIS)

The MINOS experiment is designed to perform detailed studies of the neutrino oscillations in the parameter space indicated by the recent SuperKamiokande experiment. This paper gives a general description of the experiment and of its physics goals and sensitivities, and describes the current status and projected schedule

2000-01-01

350

Status of the MINOS experiment  

Energy Technology Data Exchange (ETDEWEB)

The MINOS experiment is designed to perform detailed studies of the neutrino oscillations in the parameter space indicated by the recent SuperKamiokande experiment. This paper gives a general description of the experiment and of its physics goals and sensitivities, and describes the current status and projected schedule.

Wojcicki, Stanley G

2000-01-01

351

Antihydrogen Experiment Gravity Interferometry Spectroscopy  

CERN Multimedia

The AEGIS experiment (Antihydrogen Experiment: Gravity, Interferometry, Spectroscopy) has the aim of carrying out the first measurement of the gravitational interaction of antimatter to a precision of 1%, by applying techniques from atomic physics, laser spectroscopy and interferometry to a beam of antihydrogen atoms. A further goal of the experiment is to carry out spectroscopy of the antihydrogen atoms in flight.

Allkofer, Y R; Trezzi, D; Dassa, L; Prevedelli, M; Ferrari, G; Vaccarone, R M; Krasnicky, D; Niinikoski, T; Perini, D; Belov, A; Kaltenbacher, T R; Boscolo, I; Ferragut, R O; Nedelec, P; Testera, G; Bonomi, G; Al-qaradawi, I; De almeida simoes, J J; Brusa, R S; Prelz, F; Manuzio, G; Riccardi, C; Fontana, A; Genova, P; Haug, F; Ettenauer, S; Merkt, F; Turbabin, A; Castelli, F; Lagomarsino, V E; Doser, M; Penasa, L; Gninenko, S; Cataneo, F; Zenoni, A; Rotondi, A; Nebbia, G; Cabaret, L; Comparat, D P; Dudarev, A; Kellerbauer, A G; Mariazzi, S; Nesteruk, K P; Eisel, W T; Carraro, C; Zavatarelli, S M

352

Innovative Science Experiments Using Phoenix  

Science.gov (United States)

A simple, flexible and very low cost hardware plus software framework for developing computer-interfaced science experiments is presented. It can be used for developing computer-interfaced science experiments without getting into the details of electronics or computer programming. For developing experiments this is a middle path between…

Kumar, B. P. Ajith; Satyanarayana, V. V. V.; Singh, Kundan; Singh, Parmanand

2009-01-01

353

Recent WIPP brine migration experiments  

International Nuclear Information System (INIS)

Sandia laboratories has initiated some experiments to assess the mechanisms which influence the migration of fluids in rock salt. Two series of laboratory studies have been concluded recently, and plans for an initial in-situ experiment have been formulated. In addition, theoretical modeling studies are underway to provide formulations for predictions for both experiments and actual waste emplacements

1979-10-05

354

Promethee experiment and analysis  

International Nuclear Information System (INIS)

Full text of publication follows: The thermal conditions of containers and storage rooms is one of the decisive aspects governing the various concepts for spent fuel assemblies interim storage. In case of vertical dry storage, current numerical models are insufficiently validated against representative experiments, especially for turbulent flow of air in an annuli where usual turbulence modelling developed for forced convection flows are not well adapted to mixed convection flows. For these reasons, EDF, CEA and Framatome are currently carrying out a basic model qualification program, launched in 1998 the experimental loop for axial flow is called PROMETHEE. The main features of the experimental vessel are near a scale 1 canister: height 5 m, diameter 90 cm, air gap thickness 10 cm. Radiative thermal exchange between canister and containment vessel being essential to be well known, emissivity of the walls have been measured. Motion of air along the canister may be natural or modified using an external fan, the tests presented control the boundary conditions and investigate the effect of the electrical power supplied (from 5 kW to 20 kW), the input and output 3D effect and the efficiency of the external wind. During the steady state and transient experiment, temperature profile of walls and air are carried out. In parallel detailed 2D and 3D thermal hydraulics calculation with the tools of the different partners (EDF: Code-Saturne, Framatome: Star-cd and CEA: TRIO and FLOTRAN) have been submitted to the same boundary conditions. The Star-cd software is a general purpose code for fluid mechanics and thermal engineering. Full coupled convection - conduction - radiation heat transfers are modelled. A set of parametric calculations has been performed: Different mesh sizes and different turbulence models (variants of the standard k-epsilon model) have been investigated. From the benchmark, the experimental-calculation comparisons results of the profile temperature and flow pattern show a good agreement and the discrepancy specially when the power increases is analysed. The comparison with tests measurements led also to improve the modelling practices in problems involving such mixed convection flows. (authors)

2005-10-02

355

Injection Experiments in Jutphaas  

International Nuclear Information System (INIS)

Experiments have been performed on injection parallel to the axis of a cusped magnetic field in a nonadiabatic regime. In a model experiment using an electron beam, half of the injected current gets temporarily trapped. Confiinement time versus magnetic field is found to agree with orbit analysis. With external electrostatic fields complete confinement was obtained except for losses associated with collisions with the background gas. Proton beams of 75 mA at 15 kV were extracted from a protruding plasma ion source in pulses with falloff times of 2 ?sec. At a field strength of 13 kG, a net current of 35 mA entered the cusp, of which 15 mA penetrated the opposite end. A collector in the ring cusp measured loss currents. Decay time was 50 ?sec, being about two times our best estimate of the charge exchange time, and ten times the value deduced from the analysis of nonadiabatic orbits. Integration of these currents over the ring cusp gives there a loss of 10 to 20 mA. From these figures follows an average density of 0.5 x 109 ion cm-3. A probe of special geometry, collecting only hot ions, showed generally the same current history as ordinary probes. At an H2 pressure of 10-5 Torr, X-rays have been observed which are ascribed to beam-plasma effects. Within 10 to 20 ?sec, they fall to 20% of their value before beam turn-off, followed by a slower decay with an e-folding time of 50 ?sec. Radial probing of the plasma showed a considerable increase in collected current towards the centre with a simultaneous decrease in decay time. The measurements suggest that during injection a positive space charge is built up in the centre. This fills continuously the outer, more adiabatic, region of the cusp. After beam turn-off, the particles in the nonadiabatic region are quickly depleted, while particles in the adiabatic region leave much more slowly (50 ?sec). (author)

1966-04-01

356

Solar array flight experiment  

Science.gov (United States)

Emerging satellite designs require increasing amounts of electrical power to operate spacecraft instruments and to provide environments suitable for human habitation. In the past, electrical power was generated by covering rigid honeycomb panels with solar cells. This technology results in unacceptable weight and volume penalties when large amounts of power are required. To fill the need for large-area, lightweight solar arrays, a fabrication technique in which solar cells are attached to a copper printed circuit laminated to a plastic sheet was developed. The result is a flexible solar array with one-tenth the stowed volume and one-third the weight of comparably sized rigid arrays. An automated welding process developed to attack the cells to the printed circuit guarantees repeatable welds that are more tolerant of severe environments than conventional soldered connections. To demonstrate the flight readiness of this technology, the Solar Array Flight Experiment (SAFE) was developed and flown on the space shuttle Discovery in September 1984. The tests showed the modes and frequencies of the array to be very close to preflight predictions. Structural damping, however, was higher than anticipated. Electrical performance of the active solar panel was also tested. The flight performance and postflight data evaluation are described.

1986-01-01

357

First experiments with POWERPLAY.  

Science.gov (United States)

Like a scientist or a playing child, POWERPLAY (Schmidhuber, 2011) not only learns new skills to solve given problems, but also invents new interesting problems by itself. By design, it continually comes up with the fastest to find, initially novel, but eventually solvable tasks. It also continually simplifies or compresses or speeds up solutions to previous tasks. Here we describe first experiments with POWERPLAY. A self-delimiting recurrent neural network SLIM RNN (Schmidhuber, 2012) is used as a general computational problem solving architecture. Its connection weights can encode arbitrary, self-delimiting, halting or non-halting programs affecting both environment (through effectors) and internal states encoding abstractions of event sequences. Our POWERPLAY-driven SLIM RNN learns to become an increasingly general solver of self-invented problems, continually adding new problem solving procedures to its growing skill repertoire. Extending a recent conference paper (Srivastava, Steunebrink, Stollenga, & Schmidhuber, 2012), we identify interesting, emerging, developmental stages of our open-ended system. We also show how it automatically self-modularizes, frequently re-using code for previously invented skills, always trying to invent novel tasks that can be quickly validated because they do not require too many weight changes affecting too many previous tasks. PMID:23465562

Srivastava, Rupesh Kumar; Steunebrink, Bas R; Schmidhuber, Jürgen

2013-05-01

358

REBEKA bundle experiments  

International Nuclear Information System (INIS)

This report is a summary of experimental investigations describing the fuel rod behavior in the refilling and reflooding phase of a loss-of-coolant accident of a PWR. The experiments were performed with 5x5 and 7x7 rod bundles, using indirectly electrically heated fuel rod simulators of full length with original PWR-KWU-geometry, original grid spacers and Zircaloy-4-claddings (Type Biblis B). The fuel rod simulators showed a cosine shaped axial power profile in 7 steps and continuous, respectively. The results describe the influence of the different parameters such as bundle size on the maximum coolant channel blockage, that of the cooling on the size of the circumferential strain of the cladding (azimuthal temperature distribution) a cold control rod guide thimble and the flow direction (axial temperature distribution) on the resulting coolant channel blockage. The rewetting behavior of different fuel rod simulators including ballooned and burst Zircaloy claddings is discussed as well as the influence of thermocouples on the cladding temperature history and the rewetting behavior. All results prove the coolability of a PWR in the case of a LOCA. Therefore, it can be concluded that the ECC-criteria established by licensing authorities can be fulfilled. (orig./HP)

1988-01-01

359

Northwest Airlines flight experiments  

Science.gov (United States)

An experiment was conducted in which real-time Total Ozone Mapping Spectrometer (TOMS) data was compared with Northwest Airlines upper air charts. It was demonstrated that the regions of steep gradient in total ozone corresponded with fronts in the upper troposphere, specifically breaks in the tropopause associated with jet streams. Other small scale structures in the ozone could be related to minor trough and ridge lines. This suggests that the relation between total ozone and tropopause height might apply even on relatively small scales, and an analysis produced high correlation coefficients provided that the air mass origin was considered. In a second test, cabin ozone mixing at 37,000 ft. varied from less than 100 ppb (300 DU total ozone) to greater than 300 ppb in a trough (400 DU total ozone). A third analysis showed that clear air turbulence was located where upper air fronts were in rapid motion as suggested by comparison of the 1200 UT synoptic charts and the ozone map taken about six hours later.

Krueger, Arlin J.

1987-01-01

360

Experience Music Project  

Science.gov (United States)

Inspired by a love of music (and a great respect and admiration for Jimi Hendrix), Microsoft co-founder Paul Allen set out to create the Experience Music Project (EMP) in Seattle. In an innovative and creative building design by noted architect Frank Gehry, Allen showcases some of the over 80,000 items related to the history of music over the past century. On the site, visitors will find a number of helpful resources, ranging from the types of ongoing and exhibits hosted at the EMP to an event calendar detailing the many performances and talks held at the facility. One of the site's most fun and engaging features is the online Music Interviews, which profile music critics, women in rock and roll, and hip-hop artists such as Force MDs and Doug E. Fresh. For up and coming guitar players, there is a section highlighting "Quick Tips" that will help individuals improve their sound and instrumental style. Overall, the site is a nice resource for those interested in learning about this rather interactive and hands-on museum.

 
 
 
 
361

The PAMELA Space Experiment  

CERN Document Server

The 15th of June 2006, the PAMELA satellite-borne experiment was launched from the Baikonur cosmodrome and it has been collecting data since July 2006. The apparatus comprises a time-of-flight system, a silicon-microstrip magnetic spectrometer, a silicon-tungsten electromagnetic calorimeter, an anticoincidence system, a shower tail counter scintillator and a neutron detector. The combination of these devices allows precision studies of the charged cosmic radiation to be conducted over a wide energy range (100 MeV -- 100's GeV) with high statistics. The primary scientific goal is the measurement of the antiproton and positron energy spectrum in order to search for exotic sources, such as dark matter particle annihilations. PAMELA is also searching for primordial antinuclei (anti-helium) and testing cosmic-ray propagation models through precise measurements of the anti-particle energy spectrum and precision studies of light nuclei and their isotopes. Moreover, PAMELA is investigating phenomena connected with so...

Mocchiutti, E; Barbarino, G C; Bazilevskaya, G A; Bellotti, R; Boezio, M; Bogomolov, E A; Bonechi, L; Bongi, M; Bonvicini, V; Borisov, S; Bottai, S; Bruno, A; Cafagna, F; Campana, D; Carbone, R; Carlson, P; Casolino, M; Castellini, G; De Pascale, M P; De Simone, N; Di Felice, V; Galper, A M; Gillard, W; Grishantseva, L; Hofverberg, P; Jerse, G; Koldashov, S V; Krutkov, S Y; Kvashnin, A N; Leonov, A; Maksumov, O; Malvezzi, V; Marcelli, L; Menn, W; Mikhailov, V V; Nikonov, N N; Osteria, G; Papini, P; Pearce, M; Picozza, P; Ricci, M; Ricciarini, S B; Rossetto, L; Runtso, M; Simon, M; Sparvoli, R; Spillantini, P; Stozhkov, Yu I; Vacchi, A; Vannuccini, E; Vasilyev, G; Voronov, S A; Wu, J; Yurkin, Y T; Zampa, G; Zampa, N; Zverev, V G

2009-01-01

362

TARC experiment at CERN  

International Nuclear Information System (INIS)

It is well-known that a significant part of the world electricity is of nuclear origin (75% in case of France). One of the major current preoccupation is the search for ways to solve the important problems raised by the wastes produced in the nuclear plants to which the wastes of military origin must by added. It is urgently necessary of finding solutions to reduce the amount of wastes produced in the nuclear facilities and plants and if possible to destroy the huge present stocks. To solve these problems a solution advanced by Nobel prize winner C. Rubbia and coll. is the utilisation of hybrid systems i.e the coupling of a particle acceleration to an under-critical reactor. The research of the hybrid system efficiency in transmuting the nuclear wastes, particularly, of the long-lived fission products is presently under way at CERN. The proton beam from the proton synchrotron is injected into a massive hyper-pure lead block. The TARC (Transmutation by Adiabatic Resonance Crossing) experiment is the second stage for the determination of the fundamental parameters associated to the Energy Amplifier Project. The main goal of TARC is to measure the spallation neutron flux and to determine the efficiency of the hybrid systems intended to incinerate the nuclear wastes. The different techniques used are described. The large amount of obtained data are now processed

1997-06-01

363

Beam and experiments: summary  

Energy Technology Data Exchange (ETDEWEB)

The discovery of neutrino oscillations marks a major milestone in the history of neutrino physics, and opens a new window to the still mysterious origin of masses and flavour mixing. Many current and forthcoming experiments will answer open questions; however, a major step forward, up to and possibly including CP violation in the neutrino-mixing matrix, requires the neutrino beams from a neutrino factory. The neutrino factory is a new concept for producing neutrino beams of unprecedented quality in terms of intensity, flavour composition, and precision of the beam parameters. Most importantly, the neutrino factory is the only known way to generate a high-intensity beam of electron neutrinos of high energy. The neutrino beam from a neutrino factory, in particular the electron-neutrino beam, enables the exploration of otherwise inaccessible domains in neutrino oscillation physics by exploiting baselines of planetary dimensions. Suitable detectors pose formidable challenges but seem within reach with only moderate extrapolations from existing technologies. Although the main physics attraction of the neutrino factory is in the area of neutrino oscillations, an interesting spectrum of further opportunities ranging from high-precision, high-rate neutrino scattering to physics with high-intensity stopped muons comes with it.

Blondel, A.; Bueno, A.; Campanelli, M.; Cervera, A.; Cline, D.B.; Collot, J.; Jong, M. de; Donini, A.; Dydak, F. E-mail: friedrich.dydak@cern.ch; Edgecock, R.; Gavela, M.B.; Gomez-Cadenas, J.J.; Gonzalez-Garcia, M.C.; Gruber, P.; Harris, D.A.; Hernandez, P.; Kuno, Y.; Litchfield, P.J.; McFarland, K.; Mena, O.; Migliozzi, P.; Palladino, V.; Panman, J.; Papadopoulos, I.M.; Para, A.; Pena-Garay, C.; Perez, P.; Rigolin, S.; Romanino, A.; Rubbia, A.; Strolin, P.; Wojcicki, S

2000-08-21

364

Transportation and storage experience  

International Nuclear Information System (INIS)

Nuclear Packaging, a Pacific Nuclear Company, is the leading U. S. designer of radioactive material transport packages (casks and overpacks). The company has recently completed the design, fabrication and licensing of the new spent fuel transport container. This rail car mounted cask is the first such container to be licensed in the United States during the last decade. The composite lead cask was contracted for and designed to transport the damaged nuclear fuel from Three Mile Island Unit 2. A unique consideration in the design is the two separate levels of containment that are provided at all times, allowing the shipment of failed fuel without additional 'canning'. Another first is associated with the fact that no other previous U.S. cask design has undergone testing in support of the traditional analytical design tools. This experience is the latest in more than a decade of specialized design and licensing activities conducted by Nuclear Packaging, Inc., providing safe and efficient transport containers to the U.S. and world nuclear markets

1986-12-01

365

The PAMELA space experiment  

Science.gov (United States)

On the 15th of June 2006, the PAMELA satellite-borne experiment was launched from the Baikonur cosmodrome and it has been collecting data since July 2006. The apparatus is comprised of a time-of-flight system, a silicon-microstrip magnetic spectrometer, a silicon-tungsten electromagnetic calorimeter, an anticoincidence system, a shower tail counter scintillator and a neutron detector. The combination of these devices allows precision studies of the charged cosmic radiation to be conducted over a wide energy range (100 MeV to 100's GeV) with high statistics. The primary scientific goal is the measurement of the antiproton and positron energy spectra in order to search for exotic sources, such as dark matter particle annihilations. PAMELA is also searching for primordial antinuclei (anti-helium), and testing cosmic-ray propagation models through precise measurements of the antiparticle energy spectrum and precision studies of light nuclei and their isotopes. Moreover, PAMELA is investigating phenomena connected with solar and earth physics. After 4 years of operation in flight, PAMELA is now delivering coherent results about spectra and chemical composition of the charged cosmic radiation, allowing scenarios of production and propagation of cosmic rays to be fully established and understood.

Menn, W.; Adriani, O.; Barbarino, G. C.; Bazilevskaya, G. A.; Bellotti, R.; Boezio, M.; Bogomolov, E. A.; Bonechi, L.; Bongi, M.; Bonvicini, V.; Borisov, S.; Bottai, S.; Bruno, A.; Cafagna, F.; Campana, D.; Carbone, R.; Carlson, P.; Casolino, M.; Castellini, G.; Consiglio, L.; De Pascale, M. P.; De Santis, C.; De Simone, N.; Di Felice, V.; Galper, A. M.; Gillard, W.; Grishantseva, L.; Jerse, G.; Karelin, A. V.; Koldashov, S. V.; Krutkov, S. Y.; Kvashnin, A. N.; Leonov, A.; Malakhov, V.; Malvezzi, V.; Marcelli, L.; Mayorov, A. G.; Mikhailov, V. V.; Mocchiutti, E.; Monaco, A.; Mori, N.; Nikonov, N.; Osteria, G.; Palma, F.; Papini, P.; Pearce, M.; Picozza, P.; Pizzolotto, C.; Ricci, M.; Ricciarini, S. B.; Sarkar, R.; Rossetto, L.; Simon, M.; Sparvoli, R.; Spillantini, P.; Stochaj, S. J.; Stockton, J. C.; Stozhkov, Y. I.; Vacchi, A.; Vannuccini, E.; Vasilyev, G.; Voronov, S. A.; Wu, J.; Yurkin, Y. T.; Zampa, G.; Zampa, N.; Zverev, V. G.

2013-01-01

366

L3 + Cosmics Experiment  

CERN Multimedia

%RE4 %title\\\\ \\\\The L3+C experiment takes advantage of the unique properties of the L3 muon spectrometer to get an accurate measurement of cosmic ray muons 30 m underground. A new muon trigger, readout and DAQ system have been installed, as well as a scintillator array covering the upper surfaces of the L3 magnet for timing purposes. The acceptance amounts to 200 $m^2 sr$. The data are collected independently in parallel with L3 running. In spring 2000 a scintillator array will be installed on the roof of the SX hall in order to estimate the primary energy of air showers associated with events observed in L3+C.\\\\ \\\\The cosmic ray muon momentum spectrum, the zenith angular dependence and the charge ratio are measured with high accuracy between 20 and 2000 GeV/c. The results will provide new information about the primary composition, the shower development in the atmosphere, and the inclusive pion and kaon (production-) cross sections (specifically the "$\\pi$/K ratio") at high energies. These data will also hel...

2002-01-01

367

Project Feedback Experience  

Energy Technology Data Exchange (ETDEWEB)

In the financial responsibility of the Karlsruhe Research Center 5 reactors and 1 reprocessing plant are being decommissioned with these activities reaching a total volume of 2 billion Euros. Three reactor projects have already been completed: The FR 2 research reactor is in the state of safe enclosure i.e., only the reactor pressure vessel and its internals are in place. Apart from that the reactor building is empty. The reactors KKN and HDR have been dismantled completely and the sites have been re-cultivated (green field) again. The state of the other projects are as follows: - Multi Purpose Research Reactor (MZFR): remote controlled dismantling of the reactor vessel and internals; - Compact Sodium Cooled Reactor (KNK): installation of the equipment for the remote controlled dismantling of the reactor tank and its internals; - Karlsruhe Reprocessing Plant (WAK): decontamination of the process cells, construction of a vitrification facility for the treatment of the high-active waste concentrate (HAWC) and commission of the equipment for the segmentation of the HAWC storage tanks. The experience gained so far with regard to the technology applied and the licensing procedure will be described and discussed in the paper. The decommissioning progress is decisively determined by the direct treatment and disposal of the generated radioactive wastes. The FZK facilities and processing units available for this purpose will be also presented. Furthermore, the consequences of establishing specific organizational units as well as of a consistent project management will be outlined. (author)

Valencia, L. [Forschungszentrum Karlsruhe, Postfach 3640, 76021 Karlsruhe (Germany)

2003-07-01

368

Project Feedback Experience  

International Nuclear Information System (INIS)

In the financial responsibility of the Karlsruhe Research Center 5 reactors and 1 reprocessing plant are being decommissioned with these activities reaching a total volume of 2 billion Euros. Three reactor projects have already been completed: The FR 2 research reactor is in the state of safe enclosure i.e., only the reactor pressure vessel and its internals are in place. Apart from that the reactor building is empty. The reactors KKN and HDR have been dismantled completely and the sites have been re-cultivated (green field) again. The state of the other projects are as follows: - Multi Purpose Research Reactor (MZFR): remote controlled dismantling of the reactor vessel and internals; - Compact Sodium Cooled Reactor (KNK): installation of the equipment for the remote controlled dismantling of the reactor tank and its internals; - Karlsruhe Reprocessing Plant (WAK): decontamination of the process cells, construction of a vitrification facility for the treatment of the high-active waste concentrate (HAWC) and commission of the equipment for the segmentation of the HAWC storage tanks. The experience gained so far with regard to the technology applied and the licensing procedure will be described and discussed in the paper. The decommissioning progress is decisively determined by the direct treatment and disposal of the generated radioactive wastes. The FZK facilities and processing units available for this purpose will be also presented. Furthermore, the consequences of establishing specific organizational units as well as of a consistent project management will be outlined. (author)

2003-11-23

369

My experience in arbitration  

Directory of Open Access Journals (Sweden)

Full Text Available This paper deals with the nature of arbitration as one of the alternatives in dispute resolution processes different from mediation and conciliation, and obviously, from judicial adjudication. Unlike a mediator or a conciliator, an arbitrator is empowered to pass a judgement, like a court. In other words, the arbitrator will render a decision which is binding for the parties. The arbitrator has the jurisdictio, like a judge. Although the office of a judge and an arbitrator is the same, the source of their power is different. The judge’s power originates from a State, whereas the power of the arbitrator results primarily from a contract. Unlike the court, the arbitrator lacks the imperium, i.e. the power to make the award enforceable. When a party refuses to enforce the award, enforceability can only be provided by the judge or an authority of the state where the award has to be enforced. In a certain sense the state thus provides the back up for the arbitration system. This paper presents personal thoughts drawn from the author’s professional experience as an arbitrator in Franco-German disputes.

Claude Witz

2011-12-01

370

Operating experience at CEBAF  

International Nuclear Information System (INIS)

CEBAF, the Continuous Electron Beam Accelerator Facility, is a 5-pass, recirculating, superconducting rf linac designed to provide exceptional beam quality at 4 GeV up to 200 ?A CW. It is made up of an injector, two 400-MeV linacs, and 9 recirculation arcs having a total beamline length of more than 4.5 km. On Nov. 5, 1995, CEBAF delivered a 4 GeV, 25-?A CW electron beam to the first of 3 experimental halls and the experimental physics program was started 10 days later. Accelerator availability during the first month of the experimental run exceeded 75%. Beam properties measured in the experimental hall to date are a one sigma momentum spread of 5x10-5 and an rms emittance of 0.2 nanometer-radians, better than design specification. CW beam has been provided from all 5 passes at 800 MeV intervals. Outstanding performance of the superconducting linacs suggests a machine energy upgrade to 6 GeV in the near term with eventual machine operation at 8-10 GeV. Results from commissioning and operations experience since the last conference are presented

1996-01-01

371

A moving experience !  

CERN Multimedia

The Transport Service pulled out all the stops and, more specifically, its fleet of moving and lifting equipment for the Discovery Monday on 6 June - a truly moving experience for all the visitors who took part ! Visitors could play at being machine operator, twiddling the controls of a lift truck fitted with a jib to lift a dummy magnet into a wooden mock-up of a beam-line.They had to show even greater dexterity for this game of lucky dip...CERN-style.Those with a head for heights took to the skies 20 m above ground in a telescopic boom lift.Children were allowed to climb up into the operator's cabin - this is one of the cranes used to move the LHC magnets around. Warm thanks to all members of the Transport Service for their participation, especially B. Goicoechea, T. Ilkei, R. Bihery, S. Prodon, S. Pelletier, Y. Bernard, A.  Sallot, B. Pigeard, S. Guinchard, B. Bulot, J. Berrez, Y. Grandjean, A. Bouakkaz, M. Bois, F. Stach, T. Mazzarino and S. Fumey.

2005-01-01

372

Philosophy of Transdisciplinar? Experience  

Directory of Open Access Journals (Sweden)

Full Text Available Bioethics originated as a specific collective response of representatives of biomedical sciences, humanities and the public to the complexity of moral, anthropological and ontological problems (often in situations bordering on life and death caused by constant development of biomedical technologies. These problems escape simple, universal (eternal solutions. This makes them “finite”, multiple, dependent on the “here and now” circumstances of the choise of cognitive and communicative transdisciplinary strategies.The word “transdisciplinary” means interdisciplinary biomedical practices where in order to achieve common solutions and understand their common problem as a whole, it is necessary to transcend the area of expert authority and move into the area of “life-world”. From the philosophical point of view the idea of complexity can be interpreted as a network of relationships between the ideas of multiplicity and unity. The problem is to bring out through communication a unity of different kinds of unities presented in philosophy, theology, science, humanities and public discourses. To some extent transdisciplinarity is experience of paradoxes. They escape final resolution and give rise to ever new interpretations, have a permanent tendency to reemerge in ever new situation. They operate like “causa sue” of transdisciplinary communications in bioethics. 

Larisa Kijaš?enko

2011-04-01

373

Results from LHCf Experiment  

CERN Document Server

The LHCf experiment has taken data in 2009 and 2010 p-p collisions at LHC at $\\sqrt{s} = 0.9$ TeV and $\\sqrt{s} = 7$ TeV. The measurement of the forward neutral particle spectra produced in proton-proton collisions at LHC up to an energy of 14 TeV in the center of mass system are of fundamental importance to calibrate the Monte Carlo models widely used in the high energy cosmic ray (HECR) field, up to an equivalent laboratory energy of the order of $10^{17}$ eV. In this paper the first results on the inclusive photon spectrum measured by LHCf is reported. Comparison of this spectrum with the model expectations show significant discrepancies, mainly in the high energy region. In addition, perspectives for future analyses as well as the program for the next data taking period, in particular the possibility to take data in p-Pb collisions, will be discussed.

Tricomi, Alessia

2012-01-01

374

The HERMES experiment  

International Nuclear Information System (INIS)

The study of the spin structure of the nucleon is a fundamental problem in strong interaction physics. The HERMES experiment at DESY, Hamburg, Germany is carrying out measurements to probe the spin structure of the nucleon using a new technique. Polarized internal gas targets of hydrogen, deuterium, and 3He are used with the 27.5 GeV longitudinally polarized positron (or electron) beam of the HERA collider to measure both inclusive and semi-inclusive spin-dependent deep-inelastic scattering from the nucleon. In addition, HERMES has observed a negative spin asymmetry in the photoproduction of hadron pairs with high transverse momenta. This is interpreted as the first direct experimental evidence for a positive gluon polarization in the nucleon. The azimuthal single-spin asymmetry measured in semi-inclusive pion production at HERMES is presented and interpreted as an effect of a new T-odd fragmentation function. HERMES also has carried out precision measurements of the ratios of unpolarized nuclear cross-sections. The data indicate a sizable nuclear dependence in the ratio of longitudinal to transverse cross-sections at low Q2

2000-06-01

375

Sustained spheromak physics experiment  

International Nuclear Information System (INIS)

The Sustained Spheromak Physics Experiment, SSPX, will study spheromak physics with particular attention to energy confinement and magnetic fluctuations in a spheromak sustained by electrostatic helicity injection. In order to operate in a low collisionality mode, requiring T_e > 100 eV, vacuum techniques developed for tokamaks will be applied, and a divertor will be used for the first time in a spheromak. The discharge will operate for pulse lengths of several milliseconds, long compared to the time to establish a steady-state equilibrium but short compared to the L/R time of the flux conserver. The spheromak and helicity injector ('gun') are closely coupled, as shown by an ideal MHD model with force-free injector and edge plasmas. The current from the gun passes along the symmetry axis of the spheromak, and the resulting toroidal magnetic field causes the safety factor, q, to diverge on the separatrix. The q-profile depends on the ratio of the injector current to spheromak current and on the magnetic flux coupling the injector to the spheromak. New diagnostics include magnetic field measurements by a reflectometer operating in combined O- and X-modes and by a transient internal probe (TIP). (author)

1999-12-01

376

Sustained spheromak physics experiment  

International Nuclear Information System (INIS)

The Sustained Spheromak Physics Experiment, SSPX, will study spheromak physics with particular attention to energy confinement and magnetic fluctuations in a spheromak sustained by electrostatic helicity injection. In order to operate in a low collisionality mode, requiring T_e>100 eV, vacuum techniques developed for tokamaks will be applied, and a divertor will be used for the first time in a spheromak. The discharge will operate for pulse lengths of several milliseconds, long compared to the time to establish a steady-state equilibrium but short compared to the L/R time of the flux conserver. The spheromak and helicity injector ('gun') are closely coupled, as shown by an ideal MHD model with force-free injector and edge plasmas. The current from the gun passes along the symmetry axis of the spheromak, and the resulting toroidal magnetic field causes the safety factor, q, to diverge on the separatrix. The q-profile depends on the ratio of the injector current to spheromak current and on the magnetic flux coupling the injector to the spheromak. New diagnostics include magnetic field measurements by a reflectometer operating in combined O- and X-modes and by a transient internal probe (TIP). (author)

2001-05-01

377

Heavy ion beam experiments  

International Nuclear Information System (INIS)

The nuclear fusion studies using heavy ion beam did not come up in Japanese research program until 1978, although the inertial confinement fusion using laser beam has been studied in the Institute of Laser Engineering, Osaka University, long since. The first HIF study in Japan was the design of a driver system for a synchrotron-storage ring scheme. A good deal of effort has been exerted on accelerator physics to give intense heavy ion beam in high energy region. A NUMATRON-HIF version was deisnged and proposed by the members of HIBLIC Working Group in 1981. The Institute for Nuclear Study accelerator group planned to upgrade TARN to a synchrotron and to enlarge LITL to a long RFQ. In the course of HIBLIC-1 conceptual design study, liquid metal behavior in connection with the cavity structure and beam-plasma interaction to target physics were critical and urgent problems. As for liquid lithium, a number of experiment are to be performed in the near future. In this paper, a short review of the history and the future plans of HIF-related studies in Japan is made. (Kako, I.)

1984-01-01

378

Experiments in Crystal Optics  

Science.gov (United States)

The classic physical optics textbook approach to double-refraction starts from Huyghens constructions of wave fronts and from the optical indicatrix. Optical indicatrices are useful for a systematic description of optical properties in crystals, but students do not usually consider them an easy subject, and, therefore, shy away from optical crystallography. This is unfortunate since a basic understanding of optical crystallography is prerequisite to a correct interpretation of phenomena observed with the polarizing microscope, the most commonly used tool for the detailed study of rocks. Generally, students are comfortable with simple optical terms like reflection and refraction, while it is uncommon that they actually have seen double-refraction and noticed that crystals polarize light. Many have an unnecessarily complicated idea about vibration directions, interference colors, and interference figures; they assume such phenomena always require a microscope to observe. This is not so. Students well trained in thin section microscopy are often surprised that interference figures can be made visible macroscopically. The purpose of the experiments below is to impart an intuitive understanding of the interaction between light and crystals and, thus, of optical crystallography. This will help to demystify what is seen in the polarizing microscope, and will better prepare the student for the introduction of optical indicatrices as 3-D models to describe the directional dependence of light velocities, and thus refractive indices in anisotropic crystals.

379

Beam and experiments: summary  

International Nuclear Information System (INIS)

The discovery of neutrino oscillations marks a major milestone in the history of neutrino physics, and opens a new window to the still mysterious origin of masses and flavour mixing. Many current and forthcoming experiments will answer open questions; however, a major step forward, up to and possibly including CP violation in the neutrino-mixing matrix, requires the neutrino beams from a neutrino factory. The neutrino factory is a new concept for producing neutrino beams of unprecedented quality in terms of intensity, flavour composition, and precision of the beam parameters. Most importantly, the neutrino factory is the only known way to generate a high-intensity beam of electron neutrinos of high energy. The neutrino beam from a neutrino factory, in particular the electron-neutrino beam, enables the exploration of otherwise inaccessible domains in neutrino oscillation physics by exploiting baselines of planetary dimensions. Suitable detectors pose formidable challenges but seem within reach with only moderate extrapolations from existing technologies. Although the main physics attraction of the neutrino factory is in the area of neutrino oscillations, an interesting spectrum of further opportunities ranging from high-precision, high-rate neutrino scattering to physics with high-intensity stopped muons comes with it

2000-08-21

380

Phase 1 FGD experience  

Energy Technology Data Exchange (ETDEWEB)

This paper discusses the design, construction, and startup experiences for three Phase 1 FGD retrofit projects. The lessons learned from these projects are important as Phase 2 planning and implementation take place. To achieve compliance with Phase 1 of the 1990 CAAA, numerous utilities have chosen to use FGD systems for post-combustion control of SO{sub 2} emissions. The costs for this technology have varied greatly depending upon unit size, process selection, and design conditions. Three FGD retrofit projects that are representative of the Phase 1 design philosophy are Gibson Unit 4, Ghent Unit 1, and Elmer Smith Units 1 and 2. The design, construction, and startup of these units were completed on schedule and under budget. These units are among the lowest-cost facilities installed for Phase 1 compliance. Preliminary indications are that these three FGD systems are meeting or exceeding their respective SO{sub 2} removal performance expectations. In addition to technology selection, the contracting approaches employees were unique to each project and instrumental in minimizing the overall installed costs.

Guletsky, P.W.; Guletsky, P.M.; Boward, W.L. [Sargent and Lundy, Chicago, IL (United States)

1995-10-01

 
 
 
 
381

Toroidal confinement experiments  

International Nuclear Information System (INIS)

The major part of these activities has again been directed at the Advanced Toroidal Facility (ATF). The construction project has been somewhat delayed by difficulties in fabricating the vacuum vessel, but completion and first operations of the facility are expected in the summer of 1987. A major accomplishment of the construction work was a successful assembly of the helical coil system. Numerous other activities, in both hardware and physics categories, are involved in the preparations for operations, and the schedules for these are on track. In the areas of advanced projects and studies, there has been work on an eventual successor to ATF (ATF-II), an ATF-based reactor (ATR), the Spherical Torus Experiment (STX), the Compact Ignition Tokamak (CIT), and the Engineering Test Reactor (ETR/TIBER-II). The latter two are contributions to the national effort toward definition of these facilities. Other collaborations represented in this report include those on Heliotron-E (US-Japan), TFTR (ORNL-PPPL), ALT-II (US-F.R.G.-Japan), and Tore Supra (US-France). Other activities are covered in the form of abstracts

1987-10-01

382

Young students experience theory  

CERN Multimedia

Three sixteen-year-old students from the International School of Geneva, La Chataigneraie have spent a week finding out about the life of a theoretical physicist at CERN. Student Peter Bishop at the blackboard with Robert Fleischer of Theory Division. Peter Bishop, Sam Schoenholz and Alexander Hultin spent the time with the Theory Unit of the Physics department. The visit was at the suggestion of the students themselves, who are required to undertake work experience at an organization, gaining insights into professional life, as part of their studies. After an introduction to CERN at Microcosm, each student had the opportunity to learn about physics at a level well beyond their current academic training. They were mentored by theoretical physicists who introduced them to the basics of particle physics, discussing physics in general as well as topics such as predicting the mass of the Higgs boson and cosmology. A visit to CMS, guided by Ariane Frey, proved very impressive, but the working conditions of physi...

2004-01-01

383

Gathering positive experience  

CERN Multimedia

Last Monday, the new CERN Machine Advisory Committee (CMAC) met for the first time, and we had good news to tell its members. Over the weekend, injection tests for both LHC beams were successfully carried out. In other words, we’ve had beam in the LHC for the first time since September 2008. That’s a good feeling, but it’s no reason for complacency. There’s still a long way to go before first physics at the new energy frontier. As the Bulletin has reported over recent weeks, we’re gathering a lot of positive experience with the new quench detection and protection system (QPS), which is already allowing us to monitor the LHC far better than we were able to in the past. So far, the QPS for three of the LHC’s eight sectors has been put through its paces, and we’ve also power tested those sectors to 2000 amperes, the equivalent of around 1.2 TeV per beam. The next step is to slowly increase the current to 4000 amperes, and...

2009-01-01

384

Subterranean stress engineering experiments  

International Nuclear Information System (INIS)

The state of stress in a subterranean rock mass has classically been assumed to be constant at best. In soil with a high clay content, preconsolidation and drainage methods can lead to more stable foundation material, but methods for engineering the stresses in large masses of rock are not well known. This paper shows the results from an experiment designed to alter the in situ rock stress field in an oil shale mine. This was done by hydrofracturing the rock by use of a packed-well injection system and then propping the crack open with a thixotropic gel, which slowly hardened to the consistency of cement. Successive hydrofracture and high-pressure grouting resulted in an overstressed region. Well-head injection pressures, surface tilts, injection rates, and subterranean strains were measured and recorded on floppy disk by a Z-80 microprocessor. The results were then transmitted to the large computer system at the Los Alamos Scientific Laboratory (LASL). To put the data in a more useful form, computer-generated movies of the tilts and strains were made by use of computer graphics developed at LASL. The purpose of this paper is to present results from the Single Large Instrumented Test conducted in the Colony Oil Shale Mine near Rifle, Colorado. 13 figures

1980-05-29

385

Subseabed disposal project experiment  

International Nuclear Information System (INIS)

Induced excess pore water pressures resulting from the insertion of piezometer probes of 8-mm (0.31-in.) diameter and a simulated waste canister of 102-mm (4.0-in.) diameter and the dissipation of these excess pressures were measured during deep-ocean component tests of the In Situ Heat Transfer Experiment (ISHTE). The sediment at the Pacific test site 1100 km north of Oahu, Hawaii, is an illitic clay. Insertion-induced excess pore pressures were found to agree well with those predicted by models. Several aspects of the induced excess pressure dissipation were evaluated including the effects of probe and heater diameter, distal excess pore pressure response, and the synergistic excess pore pressure response from multiple insertions. The dissipation of induced excess pressures measured at each piezometer is predicted well by theory. The same analytical models predict the excess pore pressure history measured at the piezometers in response to the waste canister insertion. Present models were evaluated that predict insertion excess pressures and their dissipation rate at the probe surface and distal, far field, points

1989-01-26

386

The Brazilian Experience  

Energy Technology Data Exchange (ETDEWEB)

This presentation discusses the technology and experience of Petrobras in the development of deep-water exploitation off the coast of Brazil. The company recently found important oil deposits in waters over 300 m deep in Campos Basin, the main petroleum province in Brazil, located offshore Rio de Janeiro State. It is estimated that 50% of the new discoveries will take place in waters deeper than 1000 m. Unlike other companies, Petrobras made an option to develop its offshore fields by means of sub-sea equipment and floating production units. This was possible mainly because of the characteristics of the reservoirs and the mild environmental conditions in Campos Basin. Petrobras has 288 subsea trees on the seabed, 48 subsea manifolds and 21 floating production units in operation. The company has constantly moved on to deeper and deeper waters and by the end of 1998 a new milestone will be achieved with a Roncador field subsea well at 1853 m. Procap-2000, a strategic research and development corporate programme for ultra-deep water technology, was developed. Other innovations by Petrobras are also discussed. 3 figs.

Agostini, Antonio Carlos S. de

1998-12-31

387

Condensed landscape experience  

DEFF Research Database (Denmark)

â??Re-thinking interaction between landscape and urban buildingsâ?? participates in an interdisciplinary discourse about the theoretical and practical advantages of openly juxtaposing landscape and architecture without having one more advanced in importance. Recently, the greenification of buildings is becoming a standard in contemporary architecture. Merging architecture and landscape has turned into a principle for an ecological / sustainable architecture. Yet, my aspiration is to achieve a wider interaction involving an application of a wider range of perspectives, such as: urban identity, social demands, quality of space, mixture of functions, urban complexity, public life and cultural heritage. In order to launch such an approach, an understanding of the spatial, social and environmental significance of a radical re-thinking of relationships between architecture and landscape is necessary. This paper addresses the question of whether the sensation of landscape can be condensed in function or to the size of an urban building. It also discusses the benefits and potentials of the amalgamate, by underlining the unique qualities of such a hybrid. In an attempt to define the experience of landscape, eight attributes are introduced: discover, diversity, cyclic, equality, scale, transformation, topography and wilderness. The essay analyzes the attendance of these attributes in two existing fascinating hybrid structures. The first example is The High-Line a public space in New York, and the second example is Dubiner Apartment House in Israel. Even though the examples are rather different one from the other, they embody a beneficial exchange of architectural and landscape features.

Earon, Ofri

388

Chamera: A Himalayan experience  

International Nuclear Information System (INIS)

The 540 MW Chamera hydroelectric project is located on the Ravi River in the foothills of the Himalayas 500 km north of Delhi. The Chamera Constructors Consortium is made up of a joint venture of SNC Inc., Acres International, Marine Industries Limited and General Electric Canada. The consortium provides engineering, procurement, and construction management services, and supplies turbines and gates, generators and associated electrical equipment. The experience of the consortium in dealing with the Indian Government is detailed. A multi-envelope bidding system was used, with the lowest cost, technically acceptable bid receiving the contract. Misunderstandings can arise due to different perceptions of the bidding process between Canadian companies and the National Hydroelectric Power Corporation (NHPC) of the Indian government, with NHPC taking a more formal approach in contractual dealings. Export paperwork was frequently in error leading to delays in passage of goods through Indian customs. With the liberalization of the Indian trade laws there is a potential for Canada to supply a significant quantity of equipment for India's planned 38,000 MW of hydroelectric expansion. 11 figs., 2 tabs

1989-01-01

389

The LOPES experiment  

International Nuclear Information System (INIS)

Cosmic ray particles hit the Earth's atmosphere and induce extensive air showers (EAS). These EAS mainly consist of electrons and positrons that produce radio emission due to their interaction with the Earth's magnetic field. Measuring this radio emission is the purpose of the LOPES (LOFAR Prototype Station) experiment. LOPES is located at Campus North of the Karlsruhe Institute of Technology at the same site as the EAS particle detector KASCADE-Grande. Since the first measurements in 2003, LOPES was improved by various experimental setups and could establish the radio technique. By now, detailed studies of the measured radio signal are performed, like the behaviour of the lateral distribution or the polarization of the electric field. Furthermore, with LOPES the dependence of the radio pulse on properties of the incoming cosmic ray, like primary energy, primary mass, or incoming direction is investigated. In this article we describe the different LOPES setups, next we explain our standard analysis procedure and then we discuss some highlights of our recent results.

2010-09-13

390

The LOPES experiment  

Science.gov (United States)

Cosmic ray particles hit the Earth's atmosphere and induce extensive air showers (EAS). These EAS mainly consist of electrons and positrons that produce radio emission due to their interaction with the Earth's magnetic field. Measuring this radio emission is the purpose of the LOPES (LOFAR Prototype Station) experiment. LOPES is located at Campus North of the Karlsruhe Institute of Technology at the same site as the EAS particle detector KASCADE-Grande. Since the first measurements in 2003, LOPES was improved by various experimental setups and could establish the radio technique. By now, detailed studies of the measured radio signal are performed, like the behaviour of the lateral distribution or the polarization of the electric field. Furthermore, with LOPES the dependence of the radio pulse on properties of the incoming cosmic ray, like primary energy, primary mass, or incoming direction is investigated. In this article we describe the different LOPES setups, next we explain our standard analysis procedure and then we discuss some highlights of our recent results.

Link, Katrin; Apel, W. D.; Arteaga, J. C.; Asch, T.; Bähren, L.; Bekk, K.; Bertaina, M.; Biermann, P. L.; Blümer, J.; Bozdog, H.; Brancus, I. M.; Buchholz, P.; Buitink, S.; Cantoni, E.; Chiavassa, A.; Daumiller, K.; de Souza, V.; Doll, P.; Engel, R.; Falcke, H.; Finger, M.; Fuhrmann, D.; Gemmeke, H.; Grupen, C.; Haungs, A.; Heck, D.; Hörandel, J. R.; Horneffer, A.; Huber, D.; Huege, T.; Isar, P. G.; Kampert, K.-H.; Kang, D.; Krömer, O.; Kuijpers, J.; Lafebre, S.; ?uczak, P.; Ludwig, M.; Mathes, H. J.; Melissas, M.; Morello, C.; Nehls, S.; Oehlschläger, J.; Palmieri, N.; Pierog, T.; Rautenberg, J.; Rebel, H.; Roth, M.; Rühle, C.; Saftoiu, A.; Schieler, H.; Schmidt, A.; Schröder, F. G.; Sima, O.; Toma, G.; Trinchero, G. C.; Weindl, A.; Wochele, J.; Wommer, M.; Zabierowski, J.; Zensus, J. A.

2011-03-01

391

Particle physics experiments, 1991  

International Nuclear Information System (INIS)

Data taking for this experiment was completed in December 1983. The samples include approximately 19,000 (?) and 11,000 (?-bar) charged current events. These constitute the largest data set of interactions on free protons. Work published to date includes studies of inclusive structure functions and final state properties, exclusive final states, neutral current cross sections and production of strange and charmed particles. During the past year results have been published on the production of f_2 (1270) and ?"0 (770) mesons in ?p and ?-barp charged current interactions. In the case of the f_2 this represents the first observation of such production. It is found that the multiplicities are 0.047±0.017 in ?p and 0.17±0.018 in ?-barp. The f_2 mesons are mostly produced at large hadronic invariant mass W and in the forward hemisphere. The production of ?"0 mesons can be observed with high statistics in both ?p and ?-barp interactions and the differential cross section studied. The observations are compared with LUND Monte Carlo predictions, which are generally found to be too high. However qualitative features of the data are reproduced. Work continues on a precise determination of the neutral current/charged current ratio, on the study of charged and neutral current structure functions and on the production of strange particles. (author)

1992-01-01

392

CLIMEX - climate change experiment  

International Nuclear Information System (INIS)

CLIMEX was the largest scientific experiment in the world on an entire forest ecosystem and precipitation area exposed to a CO_2 level twice as high as the present level and a climate with temperatures 3-5 deg C higher than today. The project also measured effects on water and waterways. The results show that the soil decomposition processes are more rapid and liberate nitrogen to water and CO_2 to air. The forest has become a source of nitrogen and CO_2 in stead of an absorbent. The increase leakage of nitrogen to water may worsen the pollution problems. CO_2 liberated by decomposition of the soil will increase the greenhouse effect. These trends were evident after only 4 years and it is uncertain whether the alterations shall be permanent or are transition phenomena. The study concludes that if the observations are representative for the climatic changes in Norway in the future, there will be increased acidification of the lakes and waterways with a greater need of reductions in acidic precipitation and if the forest areas become a source of CO_2, then Norway must reduce CO_2 emissions from other sources in order to reach future CO_2 aims

1999-04-01

393

Use experience of FLUKA  

Energy Technology Data Exchange (ETDEWEB)

In order to conduct the shield design calculation of the Large Hadron Collider (LHC) under planning in CERN at present, the radiation group of CERN uses FLUKA (Monte Carlo High Energy Radiation Transport Code). Here is introduced on outline of FLUKA and use experience of FLUKA in the LHC-B detector shield design calculation in LHC plan. FLUKA can be said to be the highest standard in the high energy radiation transportation code of the world at every points of the physical model, the Monte Carlo calculation technique and the convenience at usage of the code. In Japan Atomic Energy Research Institute (JAERI), a using right of FLUKA for the target neutronics and facility shielding design at the neutron science research center is obtained and it seems to be an effective design means in these future designs. However, because FLUKA is allowed a limited opening and no own verification on the code, it will be supposed to be a large problem on investigating a validity in design. (K.G.)

Nakashima, Hiroshi [Japan Atomic Energy Research Inst., Tokai, Ibaraki (Japan). Tokai Research Establishment

1998-03-01

394

The gallium solar neutrino experiment  

International Nuclear Information System (INIS)

The overwhelming majority of solar neutrinos are low energy pp-neutrinos. Among the few potential experiments for their detection, the radiochemical Gallium Solar Neutrino experiment is the only one which has been demonstrated to be feasible. The strong motivations for performing such an experiment, the experimental approach, the major results of the pilot experiment performed in an international collaboration, recent progress in further reducing the counter backgrounds, experiments towards Resonance Ionization of Gallium for ultimate background reduction, the status of the project, and the plans for the future are all described. (author)

1984-01-01

395

AGS experiments -- 1991, 1992, 1993  

International Nuclear Information System (INIS)

This report contains: (1) FY 1993 AGS schedule as run; (2) FY 1994--95 AGS schedule; (3) AGS experiments ? FY 1993 (as of 30 March 1994); (4) AGS beams 1993; (5) AGS experimental area FY 1991 physics program; (6) AGS experimental area FY 1992 physics program; (7) AGS experimental area FY 1993 physics program; (8) AGS experimental area FY 1994 physics program (planned); (9) a listing of experiments by number; (10) two-page summaries of each experiment; (11) listing of publications of AGS experiments; and (12) listing of AGS experiments

1994-03-30

396

Mapping Bicyclistsâ?? Experiences in Copenhagen  

DEFF Research Database (Denmark)

This paper presents an approach to the collection, mapping, and analysis of cyclistsâ?? experiences. By spatially relating located experiences to the availability of bicycle facilities and other aspects of the urban environment, their influence on cyclistsâ?? experiences can be analysed. 398 cyclists responded and sketched their most recent cycle route and a total of 890 points to locations along the route where they had had positive and negative cycling experiences. The survey was implemented as an online questionnaire built on Google Maps, and allowed up to three positive and three negative experience points to be mapped and classified. By relating the characteristics of the experience points and the routes to the traversed urban area in general, the significance of the preconditions for obtaining positive or negative experiences could be evaluated. Thereby urban spaces can be mapped according to the potential promotion of positive or negative experiences. Further, the method might be applied to assess the effect of proposed changes to the urban design in terms of cyclistsâ?? experiences. Statistical analysis of the location attributes, traffic environments and conflicts, bicycle facilities, urban density, centrality, and environmental amenities indicates that positive experiences, or the absence of negative experiences, are clearly related to the presence of en-route cycling facilities, and attractive nature environments within a short distance of large water bodies or green edges along the route.

Snizek, Bernhard; Nielsen, Thomas Alexander Sick

397

Mapping bicyclistsâ?? experiences in Copenhagen  

DEFF Research Database (Denmark)

This paper presents an approach to the collection, mapping, and analysis of cyclistsâ?? experiences. By spatially relating located experiences to the availability of bicycle facilities and other aspects of the urban environment, their influence on cyclistsâ?? experiences can be analysed. 398 cyclists responded and sketched their most recent cycle route and a total of 890 points to locations along the route where they had had positive and negative cycling experiences. The survey was implemented as an online questionnaire built on Google Maps, and allowed up to three positive and three negative experience points to be mapped and classified.By relating the characteristics of the experience points and the routes to the traversed urban area in general, the significance of the preconditions for obtaining positive or negative experiences could be evaluated. Thereby urban spaces can be mapped according to the potential promotion of positive or negative experiences. Further, the method might be applied to assess the effect of proposed changes to the urban design in terms of cyclistsâ?? experiences.Statistical analysis of the location attributes, traffic environments and conflicts, bicycle facilities, urban density, centrality, and environmental amenities indicates that positive experiences, or the absence of negative experiences, are clearly related to the presence of en-route cycling facilities, and attractive nature environments within a short distance of large water bodies or green edges along the route.

Sick Nielsen, Thomas Alexander

2013-01-01

398

Peritoneal dialysis - experiences  

Directory of Open Access Journals (Sweden)

Full Text Available Peritoneal dialysis is the method of treatment of terminal-stage chronic kidney failure. Nowadays, this method is complementary to haemodialysis. It is based on the principles of the diffusion of solutes and ultrafiltration of fluids across the peritoneal membrane, which acts as a filter. The dialysate is introduced into the peritoneum via the previously positioned peritoneal catheter. The peritoneal dialysis is carried out on daily basis, at home by the patient, and the ”exchange” is repeated 4-5 times during the 24 hours. The first steps in peritoneal dialysis at the Department for Haemodialysis of the Clinical Centre of Vojvodina date back to 1973. Until 1992, the patients were subjected to this program only sporadically. Since 1998 the peritoneal dialysis method has been performed at the Clinic for Nephrology and Clinical Immunology. In the period 1998-2008 ninety nine peritoneal catheters were placed. Chronic glomerulonephritis, nephroangiosclerosis and diabetes were identified as the most common causes of chronic renal failure. Two methods of catheter placement were applied: the standard open surgery method (majority of patients and laparoscopy. Most of the patients were subjected to continuous ambulatory peritoneal dialysis, whereas four patients received automatic dialysis. Transplantation was performed in 10 patients, i.e. cadaveric transplantation and living-related donor transplantation, each in 5 patients. Peritoneal dialysis was available as a service outside our institution as well. A ten-year experience in peritoneal dialysis gained at our Centre has proved the advantages and qualities of this method, strongly supporting its wider application in the treatment of terminal-stage chronic kidney failure.

?ur?evi?-Mirkovi? Tatjana

2010-01-01

399

The isotope correlation experiment  

International Nuclear Information System (INIS)

The ESARDA working group on Isotopic Correlation Techniques, ICT and Reprocessing Input Analysis performed an Isotope Correlation Experiment, ICE with the aim to check the feasibility of the new technique. Ten input batches of the reprocessing of the KWO fuel at the WAK plant were analysed by 4 laboratories. All information to compare ICT with the gravimetric and volumetric methods was available. ICT combined with simplified reactor physics calculation was included. The main objectives of the statistical data evaluation were detection of outliers, the estimation of random errors and of systematic errors of the measurements performed by the 4 laboratories. Different methods for outlier detection, analysis of variances, Grubbs' analysis for the constant-bias model and Jaech's non-constant-bias model were applied. Some of the results of the statistical analysis may seem inconsistent which is due to the following reasons. For the statistical evaluations isotope abundance data (weight percent) as well as nuclear concentration data (atoms/initial metal atoms) were subjected to different outlier criteria before being used for further statistical evaluations. None of the four data evaluation groups performed a complete statistical data analysis which would render possible a comparison of the different methods applied since no commonly agreed statistical evaluation procedure existed. The results prove that ICT is as accurate as conventional techniques which have to rely on costly mass spectrometric isotope dilution analysis. The potential of outlier detection by ICT on the basis of the results from a single laboratory is as good as outlier detection by costly interlaboratory comparison. The application of fission product or Cm-244 correlations would be more timely than remeasurements at safeguards laboratories

1983-01-01

400

Wall catalysis experiment on AFE. [Aeroassist Flight Experiments  

Science.gov (United States)

This paper describes the wall catalysis experiment which is planned as part of the Aeroassist Flight experiments (AFE) that will be flown from the Space Shuttle Orbiter in late 1993. Research on candidate high-catalytic efficiency overcoats for the experiment conducted in an arc-jet air stream are discussed. The temperature distribution over the AFE heat shield is also predicted using a reacting boundary layer solution that includes surface kinetics and optical properties determined from these tests.

Stewart, David A.; Kolodziej, Paul

1988-01-01

 
 
 
 
401

Experience of aliveness within experience of being: interpretative phenomenological analysis  

Digital Repository Infrastructure Vision for European Research (DRIVER)

The thesis presents the research on the experience of aliveness, planned on the basis of the theory of existential-phenomenological psychology and the conception of intersubjectivity. The critical analysis of literature has highlighted several inconsistencies within the concept of the experience of aliveness. The aims of the research were the following: a) to describe the phenomenological structure of the experience of aliveness; b) to reveal the regularities of the attribution of meanings to...

S?alaj, Jelena

2012-01-01

402

Safety experiments and fire extinction experiments with alkali metals  

International Nuclear Information System (INIS)

In addition to experimental runs with test facilities, fire extinction experiments are performed routinely with open spill-catchpans. Certain safety aspects of the high temperature test facility HT 3 as well as a different behaviour of Sodium and Potassium fires necessitated the realization of fire extinction experiments with a more exact problem definition. The report gives a description of the test facilities and the experiments performed. (Author)

1983-01-01

403

Studying deception without deceiving participants: An experiment of deception experiments  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Banning deception in economic experiments does not exclude experiments with participants in the role of experimenters who can gain by deceiving those in the role of participants. We compare treatments with and without possible deception by experimenter-participants to test whether deception aects behaviour of participant-participants in a dictator experiment and whether participants in the role of experimenters engage in deception. We find no dierence in behaviour of participant-participants ...

Alberti, Federica; Gu?th, Werner

2012-01-01

404

Global Troposphere Experiment Project  

Science.gov (United States)

For the Global Troposphere Experiment project Pacific Exploratory Measurements West B (PEM West B), we made determinations of sulfur dioxide (SO2) and dimethyl sulfide (DMS) using gas chromatography-mass spectrometry with isotopically labelled internal standards. This technique provides measurements with precision of 1 part-per-trillion by volume below 20 pptv and 1% above 20 pptv. Measurement of DMS and SO2 were performed with a time cycle of 5-6 minutes with intermittent zero checks. The detection limits were about 1 pptv for SO2 and 2 pptv for DMS. Over 700 measurements of each compound were made in flight. Volcanic impacts on the upper troposphere were again found as a result of deep convection in the tropics. Extensive emission of SO2 from the Pacific Rim land masses were primarily observed in the lower well-mixed part of the boundary layer but also in the upper part of the boundary layer. Analyses of the SO2 data with aerosol sulfate, beryllium-7, and lead-210 indicated that SO2, contributed to half or more of the observed total oxidized sulfur (SO2 plus aerosol sulfate) in free tropospheric air. Cloud processing and rain appeared to be responsible for lower SO2 levels between 3 and 8.5 km than above or below this region. During both phases of PEM-West, dimethyl sulfide did not appear to be a major source of sulfur dioxide in the upper free troposphere over the western Pacific Ocean. In 1991 the sources Of SO2 at high altitude appeared to be both anthropogenic and volcanic with an estimated 1% being solely from DMS. The primary difference for the increase in the DMS source was the very low concentration of SO2 at high altitude. In the midlatitude region near the Asian land masses, DMS in the mixed layer was lower than in the tropical region of the western Pacific. Convective cloud systems near volcanoes in the tropical convergence in the western Pacific troposphere were a major source of SO2 at high altitudes during PEM-West B. High levels of SO2 were observed in several instances with large number concentrations of ultrafine CN above 9 km in the tropical convergence zone. Conversion of SO2, by OH to SO3 and subsequently to sulfuric acid may have been enhanced by lightning-produced NO levels exceeding 1 part per billion. Coupling of strong convection and volcanic sources of SO2 apparently is an important source of new particle formation at high altitude in the tropical convergence zone.

Bandy, Alan R.; Thornton, Donald C.

1997-01-01

405

Overview of LHD experiments  

International Nuclear Information System (INIS)

Experimental studies on the Large Helical Device during the last two years are reviewed. After the start of LHD experiment in 1998, the magnetic field has been gradually raised up to 2.89 T. The heating power has been increased, up to 4.2 MW for NBI, 1.3 MW for ICRF, and 0.9 MW for ECRH. Upgrading the key hardware systems has led to the extension of the plasma parameters to (i) higher T_e [T_e(0)=4.4 keV at =5.3x10"1"8m"-"3 and P_a_b_s=1.8MW], (ii) higher confinement [?_E=0.3 s, T_e(0)=1.1 keV at =6.5x10"1"9m"-"3 and P_a_b_s=2.0MW] and (iii) higher stored energy W_p"d"i"a=880kJ. High performance plasmas have been realized in the inward shifted magnetic axis configuration (R=3.6m) where the helical symmetry is recovered and the particle orbit properties are improved by trade off of MHD stability properties due to the appearance of the magnetic hill. The energy confinement was systematically higher than that predicted by the International Stellerator Scaling 95 up to a factor of 1.6 and was comparable with ELMy H-mode confinement capability in tokamaks. This confinement improvement is attributed to the configuration control (the inward shift of magnetic axis) and to the formation of the high edge temperature. The achieved average beta value reached 2.4% at B=1.3 T, the highest beta value ever obtained in helical devices, and so far no degradation of confinement by MHD phenomenon is observed. The inward shifted configuration has also led to successful ICRF minority ion heating. ICRF power up to 1.3 MW was reliably injected into the plasma without significant impurity contamination and a plasma with a stored energy of 200 kJ was sustained for 5 sec by ICRF alone. As another important result long pulse discharges of more than 1 minute were successfully achieved separately with NBI heating of 0.5 MW and with ICRF heating of 0.85 MW. (author)

2001-05-01

406

Transverse Injection Experiment  

International Nuclear Information System (INIS)

The motion of a plasma stream injected transverse to a magnetic field has been discussed by several authors. In early experiments with the injection of a fast (50 to 70 cm/?sec) dense (1014 ion/cm3) plasma transverse to a magnetic field, a self polarization electric field was observed and the stream crossed the magnetic field with an E x B drift. The magnetic field was only slightly disturbed by the stream (| ?B/B | <0.1) while the drift across magnetic fields up to 5 kG was at approximately the velocity of the injected stream. The height of the stream in the direction of V x B is compressed as it drifts into high magnetic field regions. At the same time, electron density measurements using interferometry techniques with the He-Ne laser show that the transverse field up to 7 kG causes no appreciable spreading of the stream to take place in the direction of B. Of interest is the action of the stream as it crosses a region where magnetic field lines reverse direction about a field null line. As the stream proceeds across the separatrix between the two field line directions, the electric field must change direction if the stream drift is to continue. The stream halts in the region of the separatrix while large currents are measured along magnetic field lines connecting the front of the stream with the following portions. Insulators placed to interrupt the current allow the stream to proceed into the reversed field region. By making use of the inductance associated with the depolarization current when magnetic field lines are tied at some distance to the side of the stream, a separation of fast and slow stream components can be made. The cutoff of the slow stream component is observed with the He-Ne laser interferometry techniques. Electric field measurements at several points along the stream show some of the more complicated features of the plasma flow. (author)

1966-04-01

407

Simulator experiments: effects of NPP operator experience on performance  

International Nuclear Information System (INIS)

During the FY83 research, a simulator experiment was conducted at the control room simulator for a GE Boiling Water Reactor (BWR) NPP. The research subjects were licensed operators undergoing requalification training and shift technical advisors (STAs). This experiment was designed to investigate the effects of senior reactor operator (SRO) experience, operating crew augmentation with an STA and practice, as a crew, upon crew and individual operator performance, in response to anticipated plant transients. Sixteen two-man crews of licensed operators were employed in a 2 x 2 factorial design. The SROs leading the crews were split into high and low experience groups on the basis of their years of experience as an SRO. One half of the high- and low-SRO experience groups were assisted by an STA. The crews responded to four simulated plant casualties. A five-variable set of content-referenced performance measures was derived from task analyses of the procedurally correct responses to the four casualties. System parameters and control manipulations were recorded by the computer controlling the simulator. Data on communications and procedure use were obtained from analysis of videotapes of the exercises. Questionnaires were used to collect subject biographical information and data on subjective workload during each simulated casualty. For four of the five performance measures, no significant differences were found between groups led by high (25 to 114 months) and low (1 to 17 months as an SRO) experience SROs. However, crews led by low experience SROs tended to have significantly shorter task performance times than crews led by high experience SROs. The presence of the STA had no significant effect on overall team performance in responding to the four simulated casualties. The FY84 experiments are a partial replication and extension of the FY83 experiment, but with PWR operators and simulator

1984-10-23

408

Data analysis for electronic experiments  

International Nuclear Information System (INIS)

In this lecture I schell attempt to cover the principal off-line software aspects in electronic experiments. Of course, this is too ambitious an undertaking for two reasons: Firstly the field is vast, and some important aspect will certainly have escaped my attention. Secondly, the choice of methods, features, algorithms, and packages presented will be biased through my personal opinion and experience, although to some extent it is influenced as well by the opinion and experience of my colleagues, who, like myself, are working in this field at CERN. Therefore, beware. Whenever I shall claim something to be evident, a matter of experience -- a fact --it ain't necessarily so. On the other hand, it will not be entirely wrong, since our experience is based on something like 30 experiments in high-energy physics using electronic for other people, and although these people are of course misled, one has to admit their existence. (orig.)

1981-03-12

409

2XIIB plasma confinement experiments  

International Nuclear Information System (INIS)

This paper discusses results of plasma confinement experiments in the 2XIIB magnetic mirror device. Experiments attempting to achieve field-reversal using neutral-beam injection in which the central magnetic field is reduced by 90% but field lines are not closed are reported. Experiments with different neutral-beam aiming show that at constant beta both electron temperature and the energy-confinement parameter (ntau) increase at larger radius. Finally, recent improvements in electron temperature and microinstability measurements are discussed. (author)

1978-08-30

410

Experiments at CERN in 1986  

International Nuclear Information System (INIS)

This report is a compilation of the current experimental programme at CERN. The experiments listed are being performed at one of the following machines: The Super Proton Synchrotron, the Proton Synchrotron and the Synchro-Cyclotron. The four experiments planned for the Large Electron Positron machine are also listed. Each experiment is briefly described and a schematic layout of its apparatus is included, together with lists of participants and institutions. (orig./HSI)

1986-01-01

411

Narrative experiments and imaginative inquiry  

Digital Repository Infrastructure Vision for European Research (DRIVER)

In this semi-autobiographical essay I explore the representation and performance of imaginative inquiry practices in educational inquiry and other disciplines, with particular reference to 'thought experiments' in the natural sciences and comparable practices in the arts, humanities, and social sciences. I share a number of experiences of writing as a mode of educational inquiry, with particular reference to narrative experiments inspired by Gilles Deleuze and Félix Guattari's figuration of ...

Noel Gough

2008-01-01

412

View of the LHCb experiment  

CERN Multimedia

Unlike the other large barrel-like experiments at the LHC, the LHCb detector consists of a series of large wall-like sub-detectors. The proton beams will collide at one end of the experiment hall and the detector will observe particles produced which travel close to the axis of the beam. This experiment will observe the production and subsequent decay of bottom quarks to look for rare 'CP violating' processes.

Claudia Marcelloni

2006-01-01

413

Laser driven hydrodynamic instability experiments  

International Nuclear Information System (INIS)

An extensive series of experiments has been conducted on the Nova laser to measure hydrodynamic instabilities in planar foils accelerated by x-ray ablation. Single mode experiments allow a measurement of the fundamental growth rates from the linear well into the nonlinear regime. Two-mode foils allow a first direct observation of mode coupling. Surface-finish experiments allow a measurement of the evolution of a broad spectrum of random initial modes

1992-11-16

414

Solar Neutrino Experiments: New Physics?  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Physics beyond the simplest version of the standard electroweak model is required to reconcile the results of the chlorine and the Kamiokande solar neutrino experiments. None of the 1000 solar models in a full Monte Carlo simulation is consistent with the results of the chlorine or the Kamiokande experiments. Even if the solar models are forced articficially to have a ${}^8 B$ neutrino flux in agreement with the Kamiokande experiment, none of the fudged models agrees with th...

Bahcall, John N.

1993-01-01

415

The theory of experience orientation  

DEFF Research Database (Denmark)

This paper describes the theory of experience orientation, which builds on the division of experiences in two categories: Goal-oriented and Omni-oriented. The theory comes from preliminary studies of userexperiences in a work-context, where I have found this distinction to be beneficial. In this paper I explain the theory behind it and the practical application of such a distinction when designing for an experience.

Jensen, Jesper Legaard

416

Quantum control in foundational experiments  

Digital Repository Infrastructure Vision for European Research (DRIVER)

We describe a new class of experiments designed to probe the foundations of quantum mechanics. Using quantum controlling devices, we show how to attain a freedom in temporal ordering of the control and detection of various phenomena. We consider wave-particle duality in the context of quantum-controlled and the entanglement-assisted delayed-choice experiments. Then we discuss a quantum-controlled CHSH experiment and measurement of photon's transversal position and momentum i...

Celeri, Lucas C.; Gomes, Rafael M.; Ionicioiu, Radu; Jennewein, Thomas; Mann, Robert B.; Terno, Daniel R.

2013-01-01

417

OSMOSE experiment representativity studies.  

Energy Technology Data Exchange (ETDEWEB)

The OSMOSE program aims at improving the neutronic predictions of advanced nuclear fuels through measurements in the MINERVE facility at the CEA-Cadarache (France) on samples containing the following separated actinides: Th-232, U-233, U-234, U-235, U-236, U-238, Np-237, Pu-238, Pu-239, Pu-240, Pu-241, Pu-242, Am-241, Am-243, Cm-244 and Cm-245. The goal of the experimental measurements is to produce a database of reactivity-worth measurements in different neutron spectra for the separated heavy nuclides. This database can then be used as a benchmark for integral reactivity-worth measurements to verify and validate reactor analysis codes and integral cross-section values for the isotopes tested. In particular, the OSMOSE experimental program will produce very accurate sample reactivity-worth measurements for a series of actinides in various spectra, from very thermalized to very fast. The objective of the analytical program is to make use of the experimental data to establish deficiencies in the basic nuclear data libraries, identify their origins, and provide guidelines for nuclear data improvements in coordination with international programs. To achieve the proposed goals, seven different neutron spectra can be created in the MINERVE facility: UO2 dissolved in water (representative of over-moderated LWR systems), UO2 matrix in water (representative of LWRs), a mixed oxide fuel matrix, two thermal spectra containing large epithermal components (representative of under-moderated reactors), a moderated fast spectrum (representative of fast reactors which have some slowing down in moderators such as lead-bismuth or sodium), and a very hard spectrum (representative of fast reactors with little moderation from reactor coolant). The different spectra are achieved by changing the experimental lattice within the MINERVE reactor. The experimental lattice is the replaceable central part of MINERVE, which establishes the spectrum at the sample location. This configuration leads to a uniform well-behaved system so that the reactor configuration is in the fundamental mode. In fact, an important property of the oscillation experiments performed in the OSMOSE program is that the neutron flux at the sample location has reached the asymptotic fundamental mode of the MINERVE lattice. This property allows the use of simple spatial methods for the analysis (e.g. a lattice code with axial buckling representing the leakage), without loss of accuracy. The computational challenge is then reduced to the need of an appropriate cross-section processing and of accurate resonance shielding algorithms. In the present study, calculations have been performed to investigate the similarity of the flux spectra at the sample position of different OSMOSE configurations with the neutron energy distributions characterizing existing thermal and fast reactors proposed under the advanced reactor programs Gen-IV, GNEP and NGNP.

Aliberti, G.; Klann, R.; Nuclear Engineering Division

2007-10-10

418

Designing experiments through compressed sensing.  

Energy Technology Data Exchange (ETDEWEB)

In the following paper, we discuss how to design an ensemble of experiments through the use of compressed sensing. Specifically, we show how to conduct a small number of physical experiments and then use compressed sensing to reconstruct a larger set of data. In order to accomplish this, we organize our results into four sections. We begin by extending the theory of compressed sensing to a finite product of Hilbert spaces. Then, we show how these results apply to experiment design. Next, we develop an efficient reconstruction algorithm that allows us to reconstruct experimental data projected onto a finite element basis. Finally, we verify our approach with two computational experiments.

Young, Joseph G.; Ridzal, Denis

2013-06-01

419

Short Baseline Neutrino Oscillation Experiments  

CERN Document Server

Series of short baseline neutrino oscillation experiments provided unexpected results, and now they are called short baseline anomalies, and all indicates an existence of sterile neutrinos with a mass scale around 1~eV. The signals of short baseline anomalies are reported from 4 different classes of experiments. However, at this moment, there is no convincing theoretical model to explain such sterile neutrinos, and a single experiment to confirm 1~eV sterile neutrinos may be challenging. In this short note, we describe classes of short baseline neutrino oscillation experiments and their goals.

Katori, Teppei

2014-01-01

420

Evaluation of Saxton critical experiments  

Energy Technology Data Exchange (ETDEWEB)

As a part of International Criticality Safety Benchmark Evaluation Project (ICSBEP), SAXTON critical experiments were reevaluated. The effects of k{sub eff} of the uncertainties in experiment parameters, fuel rod characterization, soluble boron, critical water level, core structure, {sup 241}Am and {sup 241}Pu isotope number densities, random pitch error, duplicated experiment, axial fuel position, model simplification, etc., were evaluated and added in benchmark-model k{sub eff}. In addition to detailed model, the simplified model for Saxton critical experiments was constructed by omitting the top, middle, and bottom grids and ignoring the fuel above water. 6 refs., 1 fig., 3 tabs. (Author)

Joo, Hyung Kook; Noh, Jae Man; Jung, Hyung Guk; Kim, Young Il; Kim, Young Jin [Korea Atomic Energy Research Institute, Taejon (Korea, Republic of)

1997-12-31

 
 
 
 
421

DHS Research Experience Summary  

Energy Technology Data Exchange (ETDEWEB)

I learned a great deal during my summer internship at Lawrence Livermore National Laboratory (LLNL). I plan to continue a career in research, and I feel that my experience at LLNL has been formative. I was exposed to a new area of research, as part of the Single Particle Aerosol Mass Spectrometry (SPAMS) group, and I had the opportunity to work on projects that I would not have been able to work on anywhere else. The projects both involved the use of a novel mass spectrometer that was developed at LLNL, so I would not have been able to do this research at any other facility. The first project that Zachary and I worked on involved using SPAMS to detect pesticides. The ability to rapidly detect pesticides in a variety of matrices is applicable to many fields including public health, homeland security, and environmental protection. Real-time, or near real-time, detection of potentially harmful or toxic chemical agents can offer significant advantages in the protection of public health from accidental or intentional releases of harmful pesticides, and can help to monitor the environmental effects of controlled releases of pesticides for pest control purposes. The use of organophosphate neurotoxins by terrorists is a possibility that has been described; this is a legitimate threat, considering the ease of access, toxicity, and relatively low cost of these substances. Single Particle Aerosol Mass Spectrometry (SPAMS) has successfully been used to identify a wide array of chemical compounds, including drugs, high explosives, biological materials, and chemical warfare agent simulants. Much of this groundbreaking work was carried out by our group at LLNL. In our work, we had the chance to show that SPAMS fulfills a demonstrated need for a method of carrying out real-time pesticide detection with minimal sample preparation. We did this by using a single particle aerosol mass spectrometer to obtain spectra of five different pesticides. Pesticide samples were chosen to represent four common classes of pesticides that are currently used in the US. Permethrin (a pyrethrin insecticide), dichlorvos and malathion (organophosphates), imidacloprid (a chloronicotinyl pesticide), and carbaryl (a carbamate) were selected for analysis. Samples were aerosolized either in water (using a plastic nebulizer) or in ethanol (using a glass nebulizer), and the particles entered the SPAMS instrument through a focusing lens stack. The particles then passed through a stage with three tracking lasers that were used to determine each particle's velocity. This velocity was used to calculate when to fire a desorption/ionization (D/I) laser in order to fragment the particle for analysis in a dual polarity time of flight mass spectrometer. Signals were digitized, and then analyzed using LLNL-developed software. We obtained chemical mass spectral signatures for each pesticide, and assigned peaks to the mass spectra based on our knowledge of the pesticides chemical structures. We then proved the robustness of our detection method by identifying the presence of pesticides in two real-world matrices: Raid{trademark} Ant Spray and a flea collar. To sample these, we simply needed to direct aerosolized particles into the SPAMS instrument. The minimal sample preparation required makes SPAMS very attractive as a detector. Essentially, we were able to show that SPAMS is a reliable and effective method for detecting pesticides at extremely low concentrations in a variety of matrices and physical states. The other project that I had the opportunity to be a part of did not involve data collection in the lab; it consisted of analyzing a large amount of data that had already been collected. We got to look at data collected over the course of about two months, when the SPAMS instrument was deployed to a public place. The machine sampled the air and collected spectra for over two months, storing all the spectra and associated data; we then looked at an approximately two-month subset of this data to search for patterns in the types of particles being detected. Essentially,

Venkatachalam, V

2008-10-24

422

Pharmacology Experiments on the Computer.  

Science.gov (United States)

A computer program that replaces a set of pharmacology and physiology laboratory experiments on live animals or isolated organs is described and illustrated. Five experiments are simulated: dose-effect relationships on smooth muscle, blood pressure and catecholamines, neuromuscular signal transmission, acetylcholine and the circulation, and…

Keller, Daniel

1990-01-01

423

Driving term experiments at CERN  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Driving Term experiments have been performed both at small [PS (Proton Synchrotron) Booster] and large accelerators [SPS (Super Proton Synchrotron)] at CERN. The theory of how to measure driving terms is reviewed. A wealth of SPS experiments is shown together with a successful comparison with model calculations. The PS Booster studies aimed at optimizing the machine performance by measuring and correcting selected driving terms.

Benedikt, M.; Schmidt, F.; Toma?s, Ricard; Urschu?tz, P.; Faus, A?ngeles

2007-01-01

424

The track imaging Cerenkov experiment  

Energy Technology Data Exchange (ETDEWEB)

The Track Imaging Cerenkov Experiment (TrICE) aims for a ground-based measurement of high energy cosmic-ray composition using a novel technique. By separating the Cerenkov emission from the primary and secondary particles, nearly elemental charge resolution can be established. Here the status of the TrICE experiment is discussed.

Wissel, S A [Enrico Fermi Institute and Department of Physics, University of Chicago, Chicago IL 60637 (United States); Hays, E [Enrico Fermi Institute and Department of Physics, University of Chicago, Chicago IL 60637 (United States)

2007-03-15

425

Status of rare decay experiments  

International Nuclear Information System (INIS)

Some results are given for rare muon decay experiments currently running. Also, plans are discussed for rare kaon decay experiments. Some of the events sought come from processes which violate lepton flavor conservation. Several apparatuses used in the search are described. 35 references

1984-03-04

426

A Classroom Experiment on Banking  

Science.gov (United States)

This classroom experiment uses double oral auction credit markets to illustrate the role of banks as financial intermediaries. The experiment demonstrates how risk affects market interest rates in the presence of asymmetric information. It provides fodder for a discussion of the moral-hazard problem of deposit insurance and its impact on depositor…

Kassis, Mary Mathewes; Hazlett, Denise; Ygosse Battisti, Jolanda E.

2012-01-01

427

Experiences on IGSCC crack manufacturing  

Energy Technology Data Exchange (ETDEWEB)

The author presents his experience in manufacturing IGSCC realistic defects, mainly in INCONEL 600 MA Steam Generator Tubes. From that experience he extracts some knowledge about this cracking (influence of chemistry in the environment, stress state, crack growth rate, and occurrence in laboratory condition of break before leak).

Veron, P. [Equipos Nucleares, S.A., Maliano (Spain)

1997-02-01

428

Multicultural Education: The Mexican Experience  

Science.gov (United States)

Ethnicity, culturalism, and multicultural education are discussed with reference to Mexico's history and brief experiment with multicultural training. The author suggests that the common cultural experience of United States education should be retained, along with an awareness of all ethnic groups' contribution to American society. (MF)

Ivie, Stanley D.

1978-01-01

429

Axion experiment makes its debut  

CERN Multimedia

An experiment built from components recycled from other experiments has put new limits on the properties of particles that might be the "dark matter" that makes up about 25% of the universe. The CERN Axion Solar telescope (CAST) was built to search for exotic particles called axions that might be produced inside the sun (1 page)

Dumé, Belle

2004-01-01

430

Experience economy brimming with potential  

DEFF Research Database (Denmark)

In these days of economic uncertainty, businesses ought to make better use of recent research into the experience economy. Perhaps co-creation and individualisation can save us from the crisis, argue the editors of a new book about the latest research into the experience economy.

Sørensen, Flemming; Sundbo, Jon

431

Non-accelerator neutrino experiments  

Energy Technology Data Exchange (ETDEWEB)

The current status of non-accelerator neutrino experiments is described. After a short summary on reactor neutrino experiments, the efforts to measure atmospheric, solar and supernova neutrinos are reviewed along with the implications of the results obtained so far. Finally, the prospects for high energy neutrino astronomy are discussed. (author). 55 refs., 10 figs., 3 tabs.

Hampel, W. [Max-Planck-Institut fuer Kernphysik, Heidelberg (Germany)

1994-12-31

432

Non-tokamak experiments. Summary  

International Nuclear Information System (INIS)

This is a summary report concerning circular (helical systems, RFPs, FRCs, CTs, dipoles, spheromaks) and non-circular (mirrors, foci, traps) non-tokamak fusion experiments. The major experiments are listed and their main parameters and points of interest are given

1999-12-01

433

Status of rare decay experiments  

Energy Technology Data Exchange (ETDEWEB)

Some results are given for rare muon decay experiments currently running. Also, plans are discussed for rare kaon decay experiments. Some of the events sought come from processes which violate lepton flavor conservation. Several apparatuses used in the search are described. 35 references. (LEW)

Littenberg, L.S.

1984-01-01

434

Experiences reviewing scientific C++ code  

International Nuclear Information System (INIS)

In this paper I present several issues related to the use of C++ in scientific code, drawing from my experience reviewing large bodies of such code for the Fermilab community, especially for the CDF and DOe experiments at the Fermi National Accelerator Laboratory

2001-08-20

435

An Experiment on Wind Energy  

Science.gov (United States)

We discuss an experiment on wind energy performed with home-made apparatus. The experiment reproduces a laboratory windmill, which can pump water from a lower level to a higher one. By measuring the gain of the gravitational potential energy of the pumped water, one can determine the power extracted from the wind. The activity was carried out with…

Lombardo, Vincenzo; Fiordilino, Emilio; Gallitto, Aurelio Agliolo; Aglieco, Pasquale

2012-01-01

436

The track imaging Cerenkov experiment  

International Nuclear Information System (INIS)

The Track Imaging Cerenkov Experiment (TrICE) aims for a ground-based measurement of high energy cosmic-ray composition using a novel technique. By separating the Cerenkov emission from the primary and secondary particles, nearly elemental charge resolution can be established. Here the status of the TrICE experiment is discussed

2007-03-01

437

Remote handling experience at FFTF  

International Nuclear Information System (INIS)

This paper briefly describes the remote handling experience at the FFTF's Interim Examination and Maintenance Cell, a vertical 55-ft shielded compex with an Ar atmosphere, within the FFTF containment, for remote disassembly and NDE of FFTF experiments and for remote maintenance of reactor components

1982-11-19

438

Small Break Air Ingress Experiment.  

Science.gov (United States)

The small break air-ingress experiment, described in this report, is designed to investigate air-ingress phenomena postulated to occur in pipes in a very high temperature gas-cooled reactor (VHTRs). During this experiment, air-ingress rates were measured ...

C. H. Oh E. S. Kim

2011-01-01

439

Crucial Experiments in Quantum Physics.  

Science.gov (United States)

The six experiments included in this monography are titled Blackbody Radiation, Collision of Electrons with Atoms, The Photoelectric Effect, Magnetic Properties of Atoms, The Scattering of X-Rays, and Diffraction of Electrons by a Crystal Lattice. The discussion provides historical background by giving description of the original experiments and…

Trigg, George L.

440

High School Physics Teaching Experience  

Science.gov (United States)

We divided our high school physics teaching experience into three groups: first year teaching physics, second or third year teaching physics, and four or more years of experience teaching physics. We did this because everything is new for teachers teaching a course for the first time. The second and third time through the course, teachers learn…

Physics Teacher, 2012

2012-01-01

 
 
 
 
441

Long baseline neutrino oscillation experiments  

International Nuclear Information System (INIS)

In this paper I will review briefly the experimental results which established the existence of neutrino mixing, the current generation of long baseline accelerator experiments, and the prospects for the future. In particular I will focus on the recent analysis of the MINOS experiment. (author)

2006-07-06

442

Experiments with a DC Motor  

Science.gov (United States)

Experiments with an electric motor provide good opportunity to demonstrate some basic laws of electricity and magnetism. The aim of the experiments with a low-power dc motor is to show how the motor approaches its steady rotation and how its torque, mechanical power and efficiency depend on the rotation velocity. The tight relationship between the…

Kraftmakher, Yaakov

2010-01-01

443

The UCI mobile neutrino experiment  

International Nuclear Information System (INIS)

Preliminary results are reported from the Irvine Neutrino Oscillation Experiment. This is an electron-antineutrino disappearance experiment at a reactor, and is sensitive to mass squared differences in the range ?.02 to ?6. eV2. 4 refs., 5 figs. (author)

1985-06-01

444

Impossibility, God, and Religious Experience  

Directory of Open Access Journals (Sweden)

Full Text Available This essay responds to John Caputo’s suggestion that the experience of the impossible serves as a bridge to the experience of God. While his axiology of the impossible supports a postmodern phenomenology of religious experience, Caputo connects the experience of impossibility to a radically personal theism, interpreting it too closely to a Kierkegaardian and biblical faith that ‘with God, all things are possible’. The current essay argues two things: first, that such an axiom of impossibility can indeed operate outside a narrow ‘loving-father’ theism, and second, that a form of faith that rejects this notion that God simply turns impossibility into possibility better maintains religious faith at a threshold of human manipulation and respects the freedom of Reality; it thereby responds more adequately to a postmodern challenge for authentic religious experience that is grounded in responsibility.

Yadlapati, Madhuri M.

2006-01-01

445

Status of neutrino mass experiments  

Energy Technology Data Exchange (ETDEWEB)

In 1980 two experiments ignited a fertile field of research the determination of the neutrino masses. Subsequently, over 35 experiments using a variety of techniques have probed or are probing this question. Primarily I will discuss electron antineutrino (hereafter referred to as neutrino) mass experiments. However, let me begin in Section I to discuss astronomical and terrestrial observations which motivated these experiments. In Section II, I will quote limits from muon and tau mass determinations. These limits are more thoroughly discussed in other papers. I will continue by describing the four approaches used to measure the electron neutrino mass. In Section III, tritium beta decay mass determinations will be reviewed. This section includes a general summary of previous experimental results, and discussion of the major ongoing experiments. Section IV offers concluding remarks. 24 refs., 24 figs.

Fackler, O.

1985-12-01

446

Transcendental experiences during meditation practice.  

Science.gov (United States)

This article explores transcendental experiences during meditation practice and the integration of transcendental experiences and the unfolding of higher states of consciousness with waking, dreaming, and sleeping. The subject/object relationship during transcendental experiences is characterized by the absence of time, space, and body sense--the framework that gives meaning to waking experiences. Physiologically, transcendental experiences during Transcendental Meditation practice are marked by slow inhalation, along with autonomic orientation at the onset of breath changes and heightened ?1 (8-10 Hz) frontal coherence. The integration of transcendental experiences with waking, dreaming, and sleeping is also marked by distinct subjective and objective markers. This integrated state, called Cosmic Consciousness in the Vedic tradition, is subjectively marked by inner self-awareness coexisting with waking, sleeping, and dreaming. Physiologically, Cosmic Consciousness is marked by the coexistence of ?1 electroencephalography (EEG) with delta EEG during deep sleep, and higher brain integration, greater emotional stability, and decreased anxiety during challenging tasks. Transcendental experiences may be the engine that fosters higher human development. PMID:24673148

Travis, Frederick

2014-01-01

447

Customer Experience Management in Retailing  

Directory of Open Access Journals (Sweden)

Full Text Available Survival of fittest & fastest is the mantra of today,s business game. To compete successfully in this business era, the retailer must focus on the customer,s buying experience. To manage a customer,s experience, retailers should understand what "customer experience" actually means. Customer Experience Management is a strategy that focuses the operations and processes of a business around the needs of the individual customer. It represents a strategy that results in a win-win value exchange between the retailer and its customers. The goal of customer experience management is to move customers from satisfied to loyal and then from loyal to advocate. This paper focuses on the role of macro factors in the retail environment and how they can shape customer experiences and behaviors. Several ways (e.g., Brand, Price, Promotion, Supply Chain Management, Location, Advertising,Packaging & labeling, Service Mix, and Atmosphere) to deliver a superior customer experience are identified which should result in higher customer satisfaction, more frequent shopping visits, larger wallet shares, and higher profits.

Kamaladevi B

2010-01-01

448

Experiments at CERN in 1985  

International Nuclear Information System (INIS)

This book is a compilation of the current experimental program at CERN. The experiments listed are being performed at one of the following machines: the Super Proton Synchrotron (SPS), the Proton Synchrotron (PS) and the Synchro-Cyclotron (SC). The four experiments to be done by means of the Large Electron Positron machine (LEP) are also listed. The schematic layouts of beams and experiments at the various machines are given in the beginning of the report. The experiment goals and methods are briefly described and a schematic layout of the apparatus is included. Lists of participants and their institutions are also given. The status of the experiments (preparation, data-taking, completed) corresponds to the situation as of 1st November, 1985. ''Completed'' means only that data-taking is finished, not necessarily the analysis of the results; this status is kept for two years and then the experiment is removed from the catalogue. A complete list of all experiments published in this book since 1975 is given at the end of the catalogue. (orig./HSI)

1985-01-01

449

Handbook on the Experience Economy  

DEFF Research Database (Denmark)

This illuminating Handbook presents the state-of-the-art in the scientific field of experience economy studies. It offers a rich and varied collection of contributions that discuss different issues of crucial importance for our understanding of the experience economy. Each chapter reflects diverse scientific viewpoints from disciplines including management, mainstream economics and sociology to provide a comprehensive overview. The Handbook is divided into three subsections to explore progression in the scientific field of experience economy studies. The first section focuses on fundamental debates surrounding the nature and importance of the experience economy. The second section presents more specific topics including innovation, networks and the design of experiences. Finally, the last section explores issues such as cultural events, cuisine, theatre and video games. Moreover, the Handbook gives an insight into how receivers react to experiential elements of experience economy studies. An innovative presentation of experience economics, this is a remarkable collection of new theory and analyses. This book will prove an invaluable resource to researchers and students in management, marketing, psychology and economics

2013-01-01

450

Electron beam optics for the FEL experiment and IFEL experiment  

International Nuclear Information System (INIS)

Electron beam transport system parameters for the FEL experiment and for the FEL experiment are given. The perturbation of the ''interaction region'' optics due to wiggler focussing is taken into account and a range of solutions are provided for relevant Twiss parameters in the FEL or IFEL region. Modifications of the transport optics in specific sections of the overall beam transport lines, for reasons of enhanced diagnostic capability or enhanced beam momentum analysis resolution, is also presented

1990-01-01

451

Experiments at CERN in 1997  

International Nuclear Information System (INIS)

This book summarises the current experimental programme at CERN. The experiments listed are taking place at one of the following machines: the Large Electron Positron Collider (LEP), the Super Proton Synchroton (SPS), the 28 GeV Proton Synchrotron (PS), including the Antiproton Decelerator (AD) for slow antiprotons and the ISOLDE facility for short-lived ions. The three experiments now approved for installation at the Large Hadron Collider (LHC) and the R and D projects aimed at the development of new detector technologies and data acquisition systems for the LHC experiments are also listed. (orig./WL)

1997-01-01

452

The BRAHMS experiment at RHIC  

International Nuclear Information System (INIS)

The BRAHMS experiment at RHIC was conceived to pursue the understanding of nuclear matter under extreme conditions by detailed measurements of charged hadrons over the widest possible range of rapidity and transverse momentum. The experiment consists of two spectrometers with complementary charged hadron detection capabilities as well as a series of global detectors for event characterization. A series of tracking detectors, time-of-flight arms and Cherenkov detectors enables momentum determination and particle identification over a wide range of rapidity and transverse momentum. Technical details and performance results are presented for the various detector subsystems. The performance of the entire system working together is shown to meet the goals of the experiment

2003-03-01

453

Progress at the WITCH experiment  

CERN Document Server

The WITCH-experiment will measure the energy spectrum of the recoiling daughter ions in beta decay to search for non-standard scalar and tensor type interaction. To facilitate this a Penning trap is used to store the radioactive ions. Thus the recoil ions can leave the source without any energy loss and their energy can be probed by the subsequent retardation spectrometer. The experiment is being set up at present at ISOLDE/CERN. The principle and the status of the WITCH-experiment will be presented. (12 refs).

Beck, M; Delauré, B J; Golovko, V V; Kozlov, V Yu; Kraev, I S; Lindroth, A; Phalet, T; Severijns, N; Versyck, S; Beck, D; Quint, W; Ames, F; Delahaye, P; Guenaut, C

2003-01-01

454

Monte Carlo simulation of experiments  

International Nuclear Information System (INIS)

An outline of the technique of computer simulation of particle physics experiments by the Monte Carlo method is presented. Useful special purpose subprograms are listed and described. At each stage the discussion is made concrete by direct reference to the programs SIMUL8 and its variant MONTE-PION, written to assist in the analysis of the radiative decay experiments ?"+ ? e"+? sub(e) anti?? and ?"+ ? e"+? sub(e)?, respectively. These experiments were based on the use of two large sodium iodide crystals, TINA and MINA, as e and ? detectors. Instructions for the use of SIMUL8 and MONTE-PION are given. (author)

1977-01-01

455

Laser driven hydrodynamic instability experiments  

International Nuclear Information System (INIS)

We have conducted an extensive series of experiments on the Nova laser to measure hydrodynamic instabilities in planar foils accelerated by x-ray ablation. Single mode experiments allow a measurement of the fundamental growth rates from the linear well into the nonlinear regime; multimode foils allow an assessment of the degree of mode coupling; and surface-finish experiments allow a measurement of the evolution of a broad spectrum of random initial modes. Experimental results and comparisons with theory and simulations are presented

1992-11-16

456

Bassett healthcare rural surgery experience.  

Science.gov (United States)

The surgical training at Bassett is naturally broader than in many university settings, with a survey showing that nearly 70% of graduates who practice general surgery remain in a rurally designated area. Rural surgery experience falls into 3 categories: undergraduate, graduate, and postgraduate. The general surgery training program has no competing fellowships or subspecialty residencies; residents get significant experience with endoscopy; ear, nose, and throat; plastic and hand surgery; and obstetrics and gynecology. The rural setting lifestyle is valued by the students, residents, and fellows alike. It provides an ideal setting for recognizing the specific nuances of small-town American life, with a high-quality education and surgical experience. PMID:19944814

Borgstrom, David C; Heneghan, Steven J

2009-12-01

457

Narrative experiments and imaginative inquiry  

Scientific Electronic Library Online (English)

Full Text Available SciELO South Africa | Language: English Abstract in english In this semi-autobiographical essay I explore the representation and performance of imaginative inquiry practices in educational inquiry and other disciplines, with particular reference to 'thought experiments' in the natural sciences and comparable practices in the arts, humanities, and social scie [...] nces. I share a number of experiences of writing as a mode of educational inquiry, with particular reference to narrative experiments inspired by Gilles Deleuze and Félix Guattari's figuration of the rhizome a process characterised as rhizosemiotic play and demonstrate the generativity of intertextual readings of selected fictions in catalysing them.

Gough, Noel.

458

AGS experiments - 1994, 1995, 1996  

International Nuclear Information System (INIS)

This report contains the following information on the Brookhaven AGS Accelerator complex: FY 1996 AGS schedule as run; FY 1997 AGS schedule (working copy); AGS beams 1997; AGS experimental area FY 1994 physics program; AGS experimental area FY 1995 physics program; AGS experimental area FY 1996 physics program; AGS experimental area FY 1997 physics program (in progress); a listing of experiments by number; two-phage summaries of each experiment begin here, also ordered by number; listing of publications of AGS experiments begins here; and listing of AGS experimenters begins here

1997-01-01

459

Experiments Planning, Analysis, and Optimization  

CERN Document Server

Praise for the First Edition: "If you . . . want an up-to-date, definitive reference written by authors who have contributed much to this field, then this book is an essential addition to your library."-Journal of the American Statistical Association Fully updated to reflect the major progress in the use of statistically designed experiments for product and process improvement, Experiments, Second Edition introduces some of the newest discoveries-and sheds further light on existing ones-on the design and analysis of experiments and their applications in system optimization, robustness, and tre

Wu, C F Jeff

2011-01-01

460

Bion 11 mission: primate experiments  

Science.gov (United States)

A summary is provided of the major operations required to conduct the wide range of primate experiments on the Bion 11 mission, which flew for 14 days beginning December 24, 1996. Information is given on preflight preparations, including flight candidate selection and training; attachment and implantation of bioinstrumentation; flight and ground experiment designs; onboard life support and test systems; ground and flight health monitoring; flight monkey selection and transport to the launch site; inflight procedures and data collection; postflight examinations and experiments; and assessment of results.

Ilyin, E. A.; Korolkov, V. I.; Skidmore, M. G.; Viso, M.; Kozlovskaya, I. B.; Grindeland, R. E.; Lapin, B. A.; Gordeev, Y. V.; Krotov, V. P.; Fanton, J. W.; Bielitzki, J. T.; Golov, V. K.; Magedov, V. S.; Hines, J. W.

2000-01-01

 
 
 
 
461

AGS experiments - 1994, 1995, 1996  

Energy Technology Data Exchange (ETDEWEB)

This report contains the following information on the Brookhaven AGS Accelerator complex: FY 1996 AGS schedule as run; FY 1997 AGS schedule (working copy); AGS beams 1997; AGS experimental area FY 1994 physics program; AGS experimental area FY 1995 physics program; AGS experimental area FY 1996 physics program; AGS experimental area FY 1997 physics program (in progress); a listing of experiments by number; two-phage summaries of each experiment begin here, also ordered by number; listing of publications of AGS experiments begins here; and listing of AGS experimenters begins here.

Depken, J.C.

1997-01-01

462

Narrative experiments and imaginative inquiry  

Directory of Open Access Journals (Sweden)

Full Text Available In this semi-autobiographical essay I explore the representation and performance of imaginative inquiry practices in educational inquiry and other disciplines, with particular reference to 'thought experiments' in the natural sciences and comparable practices in the arts, humanities, and social sciences. I share a number of experiences of writing as a mode of educational inquiry, with particular reference to narrative experiments inspired by Gilles Deleuze and Félix Guattari's figuration of the rhizome a process characterised as rhizosemiotic play and demonstrate the generativity of intertextual readings of selected fictions in catalysing them.

Noel Gough

2008-08-01

463

Status of the VIRGO experiment  

International Nuclear Information System (INIS)

The VIRGO experiment was approved in September 1993. The goal of the French-Italian collaboration is to detect Gravitational Waves using a 3 km arm-length Michelson interferometer. The construction of this detector, which will be installed in Pisa, is under way. The experiment is planned to take data, in a large bandwidth (10Hz-10kHz), at the beginning of year 2000 with nominal sensitivity close to h=3x10-23/?Hz. The motivations, detection principle, main sources of noise and status of the experiment are presented. (author). 14 refs., 4 figs

1994-01-01

464

The latest general chemistry experiment  

Energy Technology Data Exchange (ETDEWEB)

This book lists thirty-nine experiments, safety regulations in the laboratory and method of experiments. The contents of experiments are hut and bolt for chemistry, separation of mixture, molecular weight and vapor density, solubility and fractional crystallization, colloid, pH and an indicator, properties of acid-base, reaction speed, synthesizing of Nylon, synthesizing of aspirin, reaction of alcohol, a natural substance ; extraction of caffeine, extraction of solvent, chromatography, refining water and water analysis and periodicity of the periodic table of the elements.

Bae, Jun Hyeon; Seo, Jong Won; Lee, Dong Seop; Jang, Chel Hyeon; Cho, Yeong Bong; Hong, Jong Sun

1992-01-15

465

Sketching user experiences the workbook  

CERN Document Server

In Sketching User Experiences: The Workbook, you will learn, through step-by-step instructions and exercises, various sketching methods that will let you express your design ideas about user experiences across time. Collectively, these methods will be your sketching repertoire: a toolkit where you can choose the method most appropriate for developing your ideas, which will help you cultivate a culture of experience-based design and critique in your workplace. Features standalone modules detailing methods and exercises for practitioners who want to learn and develop their sketching skills E

Greenberg, Saul; Marquardt, Nicolai; Buxton, Bill

2012-01-01

466

Experiments with a dc motor  

International Nuclear Information System (INIS)

Experiments with an electric motor provide good opportunity to demonstrate some basic laws of electricity and magnetism. The aim of the experiments with a low-power dc motor is to show how the motor approaches its steady rotation and how its torque, mechanical power and efficiency depend on the rotation velocity. The tight relationship between the mechanical and electrical parameters of the motor is clearly seen. The measurements are carried out with the ScienceWorkshop data-acquisition system and the DataStudio software from PASCO scientific. The experiments are well related to university courses of electricity and magnetism and can be used in undergraduate laboratories or for lecture demonstrations.

2010-07-01

467

Experiments with a dc motor  

Energy Technology Data Exchange (ETDEWEB)

Experiments with an electric motor provide good opportunity to demonstrate some basic laws of electricity and magnetism. The aim of the experiments with a low-power dc motor is to show how the motor approaches its steady rotation and how its torque, mechanical power and efficiency depend on the rotation velocity. The tight relationship between the mechanical and electrical parameters of the motor is clearly seen. The measurements are carried out with the ScienceWorkshop data-acquisition system and the DataStudio software from PASCO scientific. The experiments are well related to university courses of electricity and magnetism and can be used in undergraduate laboratories or for lecture demonstrations.

Kraftmakher, Yaakov, E-mail: krafty@mail.biu.ac.i [Department of Physics, Bar-Ilan University, Ramat-Gan 52900 (Israel)

2010-07-15

468

AGS experiments: 1993 - 1994 - 1995  

International Nuclear Information System (INIS)

This report contains: FY 1995 AGS Schedule as Run; FY 1996-97 AGE Schedule (working copy); AGS Beams 1995; AGS Experimental Area FY 1993 Physics Program; AGS Experimental Area FY 1994 Physics Program; AGS Experimental Area FY 1995 Physics Program; AGS Experimental Area FY 1996 Physics Program (In progress); A listing of experiments by number; Two-page summaries of each experiment begin here, also ordered by number; Listing of publications of AGS experiments begins here; and Listing of AGS experimenters begins here. This is the twelfth edition

1996-01-01

469