Nanoscopium: a Scanning Hard X-ray Nanoprobe Beamline at Synchrotron Soleil

Science.gov (United States)

Somogyi, A.; Polack, F.; Moreno, T.

2010-06-01

Nanoscopium is the single scanning hard X-ray nano-probe beamline planned at SOLEIL. This ˜155 m long beamline will fully exploit the high brilliance and coherence characteristics of the X-ray beam both for diffraction limited focusing and for contrast formation. It will offer the most advanced imaging techniques in multimodal mode and will be a research tool for a wide user community working in the fields of earth-, environmental-, and life-sciences. The different μ-μnano-probe techniques offered by the beamline will permit elemental mapping at trace (ppm) levels (scanning XRF), speciation mapping (XANES), phase gradient mapping (scanning differential phase contrast), and density-contrast based imaging of internal structures (coherent diffraction imaging) in the 30 nm to 1 μm spatial resolution range, also in "in situ conditions". Nanoscopium will cover the 5-20 keV energy range. The stability of the nanobeam will be ensured by horizontally reflecting beamline optics (a sagitally and a tangentially pre-focusing mirror, horizontally reflecting monochromators) in front of the overfilled secondary source. Trade-off between high energy resolution (ΔE/E˜10-4) and high flux (1011 ph/s with ΔE/E˜10-2) will be achieved by two interchangeable monochromators (a double crystal and a double multilayer one). KB mirror and FZP lenses will be used as focusing devices. The beamline is in the design and construction phase. It is foreseen to be open for users at the beginning of 2013.

The INE-Beamline for Actinide Research at ANKA

Science.gov (United States)

Brendebach, Boris; Denecke, Melissa A.; Rothe, Jörg; Dardenne, Kathy; Römer, Jürgen

2007-02-01

The INE-Beamline for actinide research at the synchrotron source ANKA is now fully operational. This beamline was designed, built, and commissioned by the Institut für Nukleare Entsorgung (INE) at the Forschungszentrum Karlsruhe (FZK), Germany. It is dedicated to actinide speciation investigations related to nuclear waste disposal as well as applied and basic actinide research. Experiments on radioactive samples with activities up to 106 times the limit of exemption inside a safe and flexible double containment concept are possible. The close proximity of the beamline to INE's active laboratories is unique in Europe. Currently, experiments can be performed in an X-ray energy range from around 2.15 keV (P K edge) to 24.35 keV (Pd K edge). The INE-Beamline design is optimized for spectroscopy with emphasis on surface sensitive techniques. A microfocus option is presently being installed at the INE-Beamline. Access to the INE-Beamline is possible through cooperation with INE, through the ANKA proposal system and via the European Network of Excellence for Actinide Sciences (ACTINET).

The current status of small-angle x-ray scattering beamline at Diamond Light Source

International Nuclear Information System (INIS)

Inoue, Katsuaki; Doutch, James; Terrill, Nick

2013-01-01

The small-angle X-ray scattering (SAXS) covers the major disciplines of biology, chemistry and physics delivering structural and dynamic information in nanoscience, mesoscopic architectures, supramolecular structures, and nucleation/growth of crystals. SAXS is also proving to be important in archaeological, environmental, and conservation sciences, and has further indicated its ability to span wide-ranging scientific disciplines. Thus, strong needs for SAXS studies are increasing significantly in a broad range of scientific fields year by year. Based on such a background, the demand for high throughput SAXS experiments is increasing. At the synchrotron facility, Diamond Light Source, one SAXS beamline, Non-crystalline diffraction I22 is now operational and highly automated throughput small-angle X-ray scattering (HATSAXS) beamline B21 is now under construction. I22 is the Undulator beamline and wide varieties of experiments, including time-resolved experiments are attempted. Based on the concept of HATSAXS, the key feature of B21 will focuses on the automation of end-station equipment. A automated sample changer has been purchased for solution SAXS measurements on biomolecules. A robotic-arm-type automated sample changer that is capable of handling several kinds of samples in material science is also being constructed. B21 is expected to successfully provide all users highly automated throughput measurements with the highest possible reliability and accuracy. Construction of this beamline will end in the second half of 2012, and will be open for users in the early summer of 2013 after commissioning. (author)

First results from the high-brightness x-ray spectroscopy beamline at ALS

Energy Technology Data Exchange (ETDEWEB)

Perera, R.C.C.; Ng, W.; Jones, G. [Lawrence Berkeley National Lab., CA (United States)] [and others

1997-04-01

Beamline 9.3.1 at the Advanced Light Source (ALS) is a windowless beamline, covering the 1-6 keV photon-energy range, designed to achieve the goal of high brightness at the sample for use in the X-ray Atomic and Molecular Spectroscopy (XAMS) science, surface and interface science, biology and x-ray optical development programs at ALS. X-ray absorption and time of flight photo emission measurements in 2 - 5 keV photon energy in argon along with the flux, resolution, spot size and stability of the beamline will be discussed. Prospects for future XAMS measurements will also be presented.

The High Energy Materials Science Beamline (HEMS) at PETRA III

International Nuclear Information System (INIS)

Schell, Norbert; King, Andrew; Beckmann, Felix; Ruhnau, Hans-Ulrich; Kirchhof, Rene; Kiehn, Ruediger; Mueller, Martin; Schreyer, Andreas

2010-01-01

The HEMS Beamline at the German high-brilliance synchrotron radiation storage ring PETRA III is fully tunable between 30 and 250 keV and optimized for sub-micrometer focusing. Approximately 70 % of the beamtime will be dedicated to Materials Research. Fundamental research will encompass metallurgy, physics and chemistry with first experiments planned for the investigation of the relationship between macroscopic and micro-structural properties of polycrystalline materials, grain-grain-interactions, and the development of smart materials or processes. For this purpose a 3D-microsctructure-mapper has been designed. Applied research for manufacturing process optimization will benefit from high flux in combination with ultra-fast detector systems allowing complex and highly dynamic in-situ studies of micro-structural transformations, e.g. during welding processes. The beamline infrastructure allows accommodation of large and heavy user provided equipment. Experiments targeting the industrial user community will be based on well established techniques with standardized evaluation, allowing full service measurements, e.g. for tomography and texture determination. The beamline consists of a five meter in-vacuum undulator, a general optics hutch, an in-house test facility and three independent experimental hutches working alternately, plus additional set-up and storage space for long-term experiments. HEMS is under commissioning as one of the first beamlines running at PETRA III.

I12: the Joint Engineering, Environment and Processing (JEEP) beamline at Diamond Light Source

International Nuclear Information System (INIS)

Drakopoulos, Michael; Connolley, Thomas; Reinhard, Christina; Atwood, Robert; Magdysyuk, Oxana; Vo, Nghia; Hart, Michael; Connor, Leigh; Humphreys, Bob; Howell, George; Davies, Steve; Hill, Tim; Wilkin, Guy; Pedersen, Ulrik; Foster, Andrew; De Maio, Nicoletta; Basham, Mark; Yuan, Fajin; Wanelik, Kaz

2015-01-01

JEEP is a high-energy (50–150 keV) multi-purpose beamline offering polychromatic and monochromatic modes. It can accommodate large samples and experimental rigs, enabling in situ studies using radiography, tomography, energy-dispersive diffraction, monochromatic and white-beam two-dimensional diffraction/scattering and small-angle X-ray scattering. I12 is the Joint Engineering, Environmental and Processing (JEEP) beamline, constructed during Phase II of the Diamond Light Source. I12 is located on a short (5 m) straight section of the Diamond storage ring and uses a 4.2 T superconducting wiggler to provide polychromatic and monochromatic X-rays in the energy range 50–150 keV. The beam energy enables good penetration through large or dense samples, combined with a large beam size (1 mrad horizontally × 0.3 mrad vertically). The beam characteristics permit the study of materials and processes inside environmental chambers without unacceptable attenuation of the beam and without the need to use sample sizes which are atypically small for the process under study. X-ray techniques available to users are radiography, tomography, energy-dispersive diffraction, monochromatic and white-beam two-dimensional diffraction/scattering and small-angle X-ray scattering. Since commencing operations in November 2009, I12 has established a broad user community in materials science and processing, chemical processing, biomedical engineering, civil engineering, environmental science, palaeontology and physics

Beamlines on Indus-1 and Indus-2: present status

International Nuclear Information System (INIS)

Lodha, G.S.; Deb, S.K.

2010-01-01

Indus-1 (450 MeV) is an efficient synchrotron radiation (SR) source in the soft X-ray/vacuum ultra violet region of the electromagnetic spectrum. For Indus-1 the higher order energy contamination in soft X-ray region, heat load and radiation safety problems are also significantly low. At present five beamlines are operational. This SR source is a national science facility being used by various research group across the country. Strong efforts are underway to increase the user base of Indus-1. The talk presents some of the recent studies carried out using Indus-1. Indus-2 (2.5 GeV) synchrotron source is one of the most important accelerator based science facilities being setup in India. A few beamlines have been commissioned and are being used by researchers from different institutes. This talk gives present status of the various beamlines and experimental stations on Indus-2. It is envisaged that the atomic and molecular science community can actively participate in planning experiments on Indus-1 and Indus-2 and setup experimental stations on Indus-2. (author)

DCS - A high flux beamline for time resolved dynamic compression science – Design highlights

Energy Technology Data Exchange (ETDEWEB)

Capatina, D., E-mail: capatina@aps.anl.gov; D’Amico, K., E-mail: kdamico@aps.anl.gov; Nudell, J., E-mail: jnudell@aps.anl.gov; Collins, J., E-mail: collins@aps.anl.gov; Schmidt, O., E-mail: oschmidt@aps.anl.gov [Advanced Photon Source, Argonne National Laboratory, 9700 S. Cass Avenue, Lemont, IL 60439 (United States)

2016-07-27

The Dynamic Compression Sector (DCS) beamline, a national user facility for time resolved dynamic compression science supported by the National Nuclear Security Administration (NNSA) of the Department of Energy (DOE), has recently completed construction and is being commissioned at Sector 35 of the Advanced Photon Source (APS) at Argonne National Laboratory (ANL). The beamline consists of a First Optics Enclosure (FOE) and four experimental enclosures. A Kirkpatrick–Baez focusing mirror system with 2.2 mrad incident angles in the FOE delivers pink beam to the experimental stations. A refocusing Kirkpatrick–Baez mirror system is situated in each of the two most downstream enclosures. Experiments can be conducted in either white, monochromatic, pink or monochromatic-reflected beam mode in any of the experimental stations by changing the position of two interlocked components in the FOE. The beamline Radiation Safety System (RSS) components have been designed to handle the continuous beam provided by two in-line revolver undulators with periods of 27 and 30 mm, at closed gap, 150 mA beam current, and passing through a power limiting aperture of 1.5 x 1.0 mm{sup 2}. A novel pink beam end station stop [1] is used to stop the continuous and focused pink beam which can achieve a peak heat flux of 105 kW/mm{sup 2}. A new millisecond shutter design [2] is used to deliver a quick pulse of beam to the sample, synchronized with the dynamic event, the microsecond shutter, and the storage ring clock.

Soft x-ray beamline BL7A at the UVSOR

International Nuclear Information System (INIS)

Murata, T.; Matsukawa, T.; Naoe, S.; Horigome, T.; Matsudo, O.; Watanabe, M.

1992-01-01

A vacuum-compatible double-crystal monochromator with constant exit-beam height has been installed and operated for several years at beamline BL7A at the UVSOR facility at the Institute for Molecular Science, Okazaki, Japan, The beamline is used both for the photons from a normal bending-magnet section and those from a 4 T superconducting three-pole horizontal wiggler. Various pairs of monochromator crystals are being used with sufficient intensity and signal to noise ratio of the output signal. Basic structure of the beamline, the mechanism of the monochromator, and some typical spectra of materials with absorption edges between 850 eV and 4 keV are reported

New ambient pressure photoemission endstation at Advanced Light Source beamline 9.3.2

KAUST Repository

Grass, Michael E.; Karlsson, Patrik G.; Aksoy, Funda; Lundqvist, Måns; Wannberg, Björn; Mun, Bongjin S.; Hussain, Zahid; Liu, Zhi

2010-01-01

During the past decade, the application of ambient pressure photoemission spectroscopy (APPES) has been recognized as an important in situ tool to study environmental and materials science, energy related science, and many other fields. Several APPES endstations are currently under planning or development at the USA and international light sources, which will lead to a rapid expansion of this technique. The present work describes the design and performance of a new APPES instrument at the Advanced Light Source beamline 9.3.2 at Lawrence Berkeley National Laboratory. This new instrument, Scienta R4000 HiPP, is a result of collaboration between Advanced Light Source and its industrial partner VG-Scienta. The R4000 HiPP provides superior electron transmission as well as spectromicroscopy modes with 16 μm spatial resolution in one dimension and angle-resolved modes with simulated 0.5° angular resolution at 24° acceptance. Under maximum transmission mode, the electron detection efficiency is more than an order of magnitude better than the previous endstation at beamline 9.3.2. Herein we describe the design and performance of the system, which has been utilized to record spectra above 2 mbar. © 2010 American Institute of Physics.

Imaging in real and reciprocal space at the Diamond beamline I13

International Nuclear Information System (INIS)

Rau, C.; Wagner, U. H.; Vila-Comamala, J.; Bodey, A.; Parson, A.; García-Fernández, M.; Pešić, Z.; De Fanis, A.

2016-01-01

The Diamond Imaging and Coherence beamline I13 consists of two independent branchlines for imaging in real and reciprocal space. Different microscopies are available providing a range of spatial resolution from 5µm to potentially 5nm. The beamline operates in the energy range of 6-35keV covering different scientific areas such as biomedicine, materials science and geophysics. Several original devices have been developed at the beamline, such as the EXCALIBUR photon counting detector and the combined robot arms for coherent X-ray diffraction

Imaging in real and reciprocal space at the Diamond beamline I13

Energy Technology Data Exchange (ETDEWEB)

Rau, C., E-mail: Christoph.rau@diamond.ac.uk [Diamond Light Source Ltd., Harwell Science and Innovation Campus, Didcot, OX 11 0DE (United Kingdom); University of Manchester, School of Materials Grosvenor St., Manchester, M1 7HS (United Kingdom); Northwestern University School of Medicine, 303 E. Chicago Avenue, Chicago, IL 60611-3008 (United States); Wagner, U. H.; Vila-Comamala, J.; Bodey, A.; Parson, A.; García-Fernández, M.; Pešić, Z. [Diamond Light Source Ltd., Harwell Science and Innovation Campus, Didcot, OX 11 0DE (United Kingdom); De Fanis, A. [Diamond Light Source Ltd., Harwell Science and Innovation Campus, Didcot, OX 11 0DE (United Kingdom); European XFEL GmbH, Notkestraße 85, 22607 Hamburg (Germany)

2016-01-28

The Diamond Imaging and Coherence beamline I13 consists of two independent branchlines for imaging in real and reciprocal space. Different microscopies are available providing a range of spatial resolution from 5µm to potentially 5nm. The beamline operates in the energy range of 6-35keV covering different scientific areas such as biomedicine, materials science and geophysics. Several original devices have been developed at the beamline, such as the EXCALIBUR photon counting detector and the combined robot arms for coherent X-ray diffraction.

Secure network for beamline control

International Nuclear Information System (INIS)

Ohata, T.; Fukui, T.; Ishii, M.; Furukawa, Y.; Nakatani, T.; Matsushita, T.; Takeuchi, M.; Tanaka, R.; Ishikawa, T.

2001-01-01

In SPring-8, beamline control system is constructed with a highly available distributed network system. The socket based communication protocol is used for the beamline control mainly. Beamline users can control the equipment by sending simple control commands to a server process, which is running on a beamline-managing computer (Ohata et al., SPring-8 beamline control system, ICALEPCS'99, Trieste, Italy, 1999). At the beginning the network was based on the shared topology at all beamlines. Consequently, it has a risk for misapplication of the user's program to access different machines on the network system cross over beamlines. It is serious problem for the SPring-8 beamline control system, because all beamlines controlled with unified software interfaces. We introduced the switching technology and the firewalls to support network access control. Also the virtual networking (VLAN: IEEE 802.1Q) and the gigabit Ethernet technology (IEEE 802.3ab) are introduced. Thus the network security and the reliability are guaranteed at the higher level in SPring-8 beamline

CAT Guide and Beamline Directory. A key to APS Collaborative Access Teams

International Nuclear Information System (INIS)

1999-01-01

The Advanced Photon Source (APS), a national user facility for synchrotrons radiation research, is located at Argonne National Laboratory, approximately 25 miles southwest of Chicago, Illinois. The APS is considered a third-generation synchrotrons radiation facility (specifically designed to accommodate insertion devices to serve as radiation sources) and is one of three such facilities in the world. Currently, it is the most brilliant source in the United States for research in such diverse fields as biology, medicine, materials science, chemistry, geology, agriculture and soil science, physics, and manufacturing technology. Researchers use the APS either as members of Collaborative Access Teams (CATS) or as Independent Investigators (IIs). CATS are responsible for designing, building, and operating beamlines in one or more sectors, each sector consisting of an insertion-device (ID) beamline and a bending-magnet (BM) beamline. Each beamline is designed to accommodate a specific type of research program(s) and is optimized accordingly. CAT members are entitled to use 75% of the available beam time to pursue CAT research goals. The remaining 25% of the available beam time must be made available to IIs. This document was written to help prospective IIs determine which beamlines are suitable for their specific experiments

Research at and Operation of the Materials Science Beamline (X-11) at the National Synchrotron Light Source. Final Report

International Nuclear Information System (INIS)

Sayers, Dale E.

2003-01-01

This is the final report for DOE DE-FG02-89ER45384. An overview of the operational history and status of beamline X-11A at the end of the contract period, and a brief review of the core science program at NCSU and the scientific results of X-11A since the last progress report is also presented

APS beamline standard components handbook

International Nuclear Information System (INIS)

Kuzay, T.M.

1992-01-01

It is clear that most Advanced Photon Source (APS) Collaborative Access Team (CAT) members would like to concentrate on designing specialized equipment related to their scientific programs rather than on routine or standard beamline components. Thus, an effort is in progress at the APS to identify standard and modular components of APS beamlines. Identifying standard components is a nontrivial task because these components should support diverse beamline objectives. To assist with this effort, the APS has obtained advice and help from a Beamline Standardization and Modularization Committee consisting of experts in beamline design, construction, and operation. The staff of the Experimental Facilities Division identified various components thought to be standard items for beamlines, regardless of the specific scientific objective of a particular beamline. A generic beamline layout formed the basis for this identification. This layout is based on a double-crystal monochromator as the first optical element, with the possibility of other elements to follow. Pre-engineering designs were then made of the identified standard components. The Beamline Standardization and Modularization Committee has reviewed these designs and provided very useful input regarding the specifications of these components. We realize that there will be other configurations that may require special or modified components. This Handbook in its current version (1.1) contains descriptions, specifications, and pre-engineering design drawings of these standard components. In the future, the APS plans to add engineering drawings of identified standard beamline components. Use of standard components should result in major cost reductions for CATs in the areas of beamline design and construction

Control and data acquisition system for the macromolecular crystallography beamline of SSRF

International Nuclear Information System (INIS)

Wang Qisheng; Huang Sheng; Sun Bo; Tang Lin; He Jianhua

2012-01-01

The macromolecular crystallography beamline BL17U1 of Shanghai Synchrotron Radiation Facility (SSRF) is an important platform for structure biological science. High performance of the beamline would benefit the users greatly in their experiment and data acquisition. To take full advantage of the state-of-the-art mechanical and physical design of the beamline, we have made a series of efforts to develop a robust control and data acquisition system, with user-friendly GUI. These were done by adopting EPICS and Blu-Ice systems on the BL17U1 beamline, with considerations on easy accommodation of new beeline components. In this paper, we report the integration of EPICS and Blu-Ice systems. By using the EPICS gateway interface and several new DHS, Blu-Ice was successfully established for the BL17U1 beamline. As a result, the experiment control and data acquisition system is reliable and functional for users. (authors)

PF-AR NW14, a new time-resolved diffraction/scattering beamline

Science.gov (United States)

Nozawa, Shunsuke; Adachi, Shin-ichi; Tazaki, Ryoko; Takahashi, Jun-ichi; Itatani, Jiro; Daimon, Masahiro; Mori, Takeharu; Sawa, Hiroshi; Kawata, Hiroshi; Koshihara, Shin-ya

2005-01-01

NW14 is a new insertion device beamline at the Photon Factory Advanced Ring (PF-AR), which is a unique ring with full-time single-bunched operation, aiming for timeresolved x-ray diffraction/scattering and XAFS experiments. The primary scientific goal of this beamline is to observe the ultrafast dynamics of condensed matter systems such as organic and inorganic crystals, biological systems and liquids triggered by optical pulses. With the large photon fluxes derived from the undulator, it should become possible to take a snapshoot an atomic-scale image of the electron density distribution. By combining a series of images it is possible to produce a movie of the photo-induced dynamics with 50-ps resolution. The construction of the beamline is being funded by the ERATO Koshihara Non-equilibrium Dynamics Project of the Japan Science and Technology Agency (JST), and the beamline will be operational from autumn 2005.

PF-AR NW14, a new time-resolved diffraction/scattering beamline

International Nuclear Information System (INIS)

Nozawa, Shunsuke; Adachi, Shin-ichi; Tazaki, Ryoko; Takahashi, Jun-ichi; Itatani, Jiro; Daimon, Masahiro; Mori, Takeharu; Sawa, Hiroshi; Kawata, Hiroshi; Koshihara, Shin-ya

2005-01-01

NW14 is a new insertion device beamline at the Photon Factory Advanced Ring (PF-AR), which is a unique ring with full-time single-bunched operation, aiming for timeresolved x-ray diffraction/scattering and XAFS experiments. The primary scientific goal of this beamline is to observe the ultrafast dynamics of condensed matter systems such as organic and inorganic crystals, biological systems and liquids triggered by optical pulses. With the large photon fluxes derived from the undulator, it should become possible to take a snapshoot an atomic-scale image of the electron density distribution. By combining a series of images it is possible to produce a movie of the photo-induced dynamics with 50-ps resolution. The construction of the beamline is being funded by the ERATO Koshihara Non-equilibrium Dynamics Project of the Japan Science and Technology Agency (JST), and the beamline will be operational from autumn 2005

Phase II and III the next generation of CLS beamline control and data acquisition systems

International Nuclear Information System (INIS)

Matias, E.; Beauregard, D.; Berg, R.; Black, G.; Boots, M.J.; Dolton, W.; Hunter, D.; Igarashi, R.; Liu, D.; Maxwell, D.; Miller, C.D.; Wilson, T.; Wright, G.

2012-01-01

The Canadian Light Source (CLS) is nearing the completion of its suite of Phase II Beamlines and in detailed design of its Phase III Beamlines. The paper presents an overview of the overall approach adopted by CLS in the development of beamline control and data acquisition systems. Building on the experience of our first phase of beamlines the CLS has continued to make extensive use of EPICS with EDM and QT based user interfaces. Increasing interpretive languages such as Python are finding a place in the beamline control systems. Web based environment such as ScienceStudio have also found a prominent place in the control system architecture as we move to tighter integration between data acquisition, visualization and data analysis. (authors)

Status of the ELIMED multidisciplinary and medical beam-line at ELI-Beamlines

International Nuclear Information System (INIS)

Romano, F; Cirrone, G A P; Cuttone, G; Schillaci, F; Scuderi, V; Amico, A; Candiano, G; Larosa, G; Leanza, R; Manna, R; Marchese, V; Milluzzo, G; Petringa, G; Pipek, J; Giordanengo, S; Guarachi, L F; Marchetto, F; Sacchi, R; Korn, G; Margarone, D

2017-01-01

Nowadays, one of the biggest challenges consists in using high intensity laser-target interaction to generate high-energy ions for medical purposes, eventually replacing the old paradigm of acceleration characterized by huge and complex machines. In order to investigate the feasibility of using laser-driven ion beams for multidisciplinary application, a dedicated beam transport line will be installed at the ELI-Beamlines facility in Prague (CZ), as a part of the User-oriented ELIMAIA beam-line dedicated to ion acceleration and their potential applications. The beam-line section dedicated to transport and dosimetric endpoints is called ELIMED (ELI-Beamlines MEDical and multidisciplinary applications) and will be developed by the INFN-LNS. (paper)

Characterization of γ-ray background at IMAT beamline of ISIS Spallation Neutron Source

Science.gov (United States)

Festa, G.; Andreani, C.; Arcidiacono, L.; Burca, G.; Kockelmann, W.; Minniti, T.; Senesi, R.

2017-08-01

The environmental γ -ray background on the IMAT beamline at ISIS Spallation Neutron Source, Target Station 2, is characterized via γ spectroscopy. The measurements include gamma exposure at the imaging detector position, along with the gamma background inside the beamline. Present results are discussed and compared with previous measurements recorded at INES and VESUVIO beamlines operating at Target Station 1. They provide new outcome for expanding and optimizing the PGAA experimental capability at the ISIS neutron source for the investigation of materials, engineering components and cultural heritage objects at the ISIS neutron source.

Characterization of γ-ray background at IMAT beamline of ISIS Spallation Neutron Source

International Nuclear Information System (INIS)

Festa, G.; Andreani, C.; Arcidiacono, L.; Senesi, R.; Burca, G.; Kockelmann, W.; Minniti, T.

2017-01-01

The environmental γ -ray background on the IMAT beamline at ISIS Spallation Neutron Source, Target Station 2, is characterized via γ  spectroscopy. The measurements include gamma exposure at the imaging detector position, along with the gamma background inside the beamline. Present results are discussed and compared with previous measurements recorded at INES and VESUVIO beamlines operating at Target Station 1. They provide new outcome for expanding and optimizing the PGAA experimental capability at the ISIS neutron source for the investigation of materials, engineering components and cultural heritage objects at the ISIS neutron source.

I12: the Joint Engineering, Environment and Processing (JEEP) beamline at Diamond Light Source.

Science.gov (United States)

Drakopoulos, Michael; Connolley, Thomas; Reinhard, Christina; Atwood, Robert; Magdysyuk, Oxana; Vo, Nghia; Hart, Michael; Connor, Leigh; Humphreys, Bob; Howell, George; Davies, Steve; Hill, Tim; Wilkin, Guy; Pedersen, Ulrik; Foster, Andrew; De Maio, Nicoletta; Basham, Mark; Yuan, Fajin; Wanelik, Kaz

2015-05-01

I12 is the Joint Engineering, Environmental and Processing (JEEP) beamline, constructed during Phase II of the Diamond Light Source. I12 is located on a short (5 m) straight section of the Diamond storage ring and uses a 4.2 T superconducting wiggler to provide polychromatic and monochromatic X-rays in the energy range 50-150 keV. The beam energy enables good penetration through large or dense samples, combined with a large beam size (1 mrad horizontally × 0.3 mrad vertically). The beam characteristics permit the study of materials and processes inside environmental chambers without unacceptable attenuation of the beam and without the need to use sample sizes which are atypically small for the process under study. X-ray techniques available to users are radiography, tomography, energy-dispersive diffraction, monochromatic and white-beam two-dimensional diffraction/scattering and small-angle X-ray scattering. Since commencing operations in November 2009, I12 has established a broad user community in materials science and processing, chemical processing, biomedical engineering, civil engineering, environmental science, palaeontology and physics.

An object model for beamline descriptions

International Nuclear Information System (INIS)

Hill, B.W.; Martono, H.; Gillespie, J.S.

1997-01-01

Translation of beamline model descriptions between different accelerator codes presents a unique challenge due to the different representations used for various elements and subsystems. These differences range from simple units conversions to more complex translations involving multiple beamline components. A representation of basic accelerator components is being developed in order to define a meta-structure from which beamline models, in different codes, can be described and to facilitate the translation of models between these codes. Sublines of basic components will be used to represent more complex beamline descriptions and bridge the gap between codes which may represent a beamline element as a single entity, and those which use multiple elements to describe the same physical device. A C++ object model for supporting this beamline description and a grammar for describing beamlines in terms of these components is being developed. The object model will support a common graphic user interface and translation filters for representing native beamline descriptions for a variety of accelerator codes. An overview of our work on the object model for beamline descriptions is presented here. copyright 1997 American Institute of Physics

Applications of synchrotron-based X-ray fluorescence technique in materials science-possibilities at INDUS-2

International Nuclear Information System (INIS)

Tiwari, Manoj K.

2016-01-01

X-ray fluorescence (XRF) spectroscopy has seen remarkable progress over the last few decades. Numerous applications in basic and applied sciences demonstrate its importance. Various advantages of XRF technique have motivated us to construct a microfocus XRF beamline (BL-16) on Indus-2 national synchrotron radiation facility. The BL-16 beamline offers a wide range of usages - both from research laboratories and industries; and for researchers working in diverse fields. Apart from the fields of pure sciences like physics and chemistry, the beamline provides an attractive platform to exercise material science applications, interdisciplinary applied sciences like medical, forensic and environmental studies etc. In addition to micro-XRF characterization, BL-16 beamline allows a user to perform studies using other advanced synchrotron based experimental methodologies, viz; grazing incidence X-ray fluorescence (GIXRF) analysis, chemical speciation, near-edge absorption spectroscopy and X-ray reflectivity studies of thin layered materials etc. The combined XRR-GIXRF analysis feature of the BL-16 beamline offers a novel capability to perform GIXRF assisted depth resolved X-ray studies to investigate chemical state and electronic structure of the thin nano-structured materials. The design aspects and various salient features of the BL-16 beamline X-ray reflectometer will be presented along with the measured performance. (author)

SPring-8 Structural Biology Beamlines / Current Status of Public Beamlines for Protein Crystallography at SPring-8

International Nuclear Information System (INIS)

Kawamoto, Masahide; Hasegawa, Kazuya; Shimizu, Nobutaka; Sakai, Hisanobu; Shimizu, Tetsuya; Nisawa, Atsushi; Yamamoto, Masaki

2007-01-01

SPring-8 has 2 protein crystallography beamlines for public use, BL38B1 (Structural Biology III) and BL41XU (Structural Biology I). The BL38B1 is a bending magnet beamline for routine data collection, and the BL41XU is an undulator beamline specially customized for micro beam and ultra-high resolutional experiment. The designs and the performances of each beamline are presented

Computer science handbook. Vol. 13.3. Environmental computer science. Computer science methods for environmental protection and environmental research

International Nuclear Information System (INIS)

Page, B.; Hilty, L.M.

1994-01-01

Environmental computer science is a new partial discipline of applied computer science, which makes use of methods and techniques of information processing in environmental protection. Thanks to the inter-disciplinary nature of environmental problems, computer science acts as a mediator between numerous disciplines and institutions in this sector. The handbook reflects the broad spectrum of state-of-the art environmental computer science. The following important subjects are dealt with: Environmental databases and information systems, environmental monitoring, modelling and simulation, visualization of environmental data and knowledge-based systems in the environmental sector. (orig.) [de

Nanotomography endstation at the P05 beamline: Status and perspectives

Science.gov (United States)

Greving, I.; Ogurreck, M.; Marschall, F.; Last, A.; Wilde, F.; Dose, T.; Burmester, H.; Lottermoser, L.; Müller, M.; David, C.; Beckmann, F.

2017-06-01

The Imaging Beamline IBL/P05 at the DESY storage ring PETRA III, operated by the Helmholtz-Zentrum Geesthacht, has two dedicated endstations optimized for micro- and nanotomography experiments [1-3]. Here we present the status of the nanotomography endstation, highlight the latest instrumentation upgrades and present first experimental results. In particular in materials science, where structures with ceramics or metallic materials are of interest, X-ray energies of 15 keV and above are required even for sample sizes of several 10 μm in diameter. The P05 imaging beamline is dedicated to materials science and is designed to allow for imaging applications with X-ray energies of 10 to 50 keV. In addition to the full field X-ray microscopy setup, the layout of the nanotomography endstation allows switching to cone-beam configuration. Kinematics for X-ray optics like compound refractive lenses (CRLs), Fresnel zone plates (FZP) or beam-shaping optics are implemented and the installation of a Kirkpatrick Baez-mirror (KB mirror) system is foreseen at a later stage of the beamline development. Altogether this leads to a high flexibility of the nanotomography setup such that the instrument can be tailored to the specific experimental requirements of a range of sample systems.

I19, the small-molecule single-crystal diffraction beamline at Diamond Light Source.

Science.gov (United States)

Nowell, Harriott; Barnett, Sarah A; Christensen, Kirsten E; Teat, Simon J; Allan, David R

2012-05-01

The dedicated small-molecule single-crystal X-ray diffraction beamline (I19) at Diamond Light Source has been operational and supporting users for over three years. I19 is a high-flux tunable-wavelength beamline and its key details are described in this article. Much of the work performed on the beamline involves structure determination from small and weakly diffracting crystals. Other experiments that have been supported to date include structural studies at high pressure, studies of metastable species, variable-temperature crystallography, studies involving gas exchange in porous materials and structural characterizations that require analysis of the diffuse scattering between Bragg reflections. A range of sample environments to facilitate crystallographic studies under non-ambient conditions are available as well as a number of options for automation. An indication of the scope of the science carried out on the beamline is provided by the range of highlights selected for this paper.

Nuclear resonant scattering beamline at SPring-8

Energy Technology Data Exchange (ETDEWEB)

Harami, Taikan [Japan Atomic Energy Research Inst., Kamigori, Hyogo (Japan). Kansai Research Establishment

1996-04-01

Mainly by Japan Atomic Energy Research Institute, the Institute of Physical and Chemical Research and Japan Synchrotron Radiation Research Institute, the construction of the Super Photon ring-8 GeV (SPring-8) which is the large scale synchrotron radiation facility for a high luminance light source placing emphasis on short wavelength region (shorter than about 1 nm) is in progress at the Harima Science Park City, Hyogo Prefecture. The features of the SPring-8 are the high luminance of light, the good parallelism and directionality of light, the quasi-monochromatic light with variable wavelength, and the possibility of design from straight polarization to circular polarization. The injection system that accelerates electrons up to 8 GeV and the storage ring storing the 8 GeV electrons for long hours, and 61 beamlines are explained. The manufacture of the nuclear resonant scattering beamline as the beamline for joint utilization was begun. Its transport channel and the experiment hutch are shown. By the features of undulator synchrotron radiation, the research on the matters with small recoilless fraction such as biological substances, liquid, gas and others and the research on time-dependent phenomena become feasible anew. The research on the dynamic structural analysis of heme protein is planned. (K.I.)

An undulator based high flux and high resolution beamline for atomic, molecular and optical science (AMOS) research at INDUS-2 synchrotron radiation source (SRS)

International Nuclear Information System (INIS)

Das, Asim Kumar; Rajasekhar, B.N.; Sahoo, N.K.

2014-08-01

A dedicated UV-VUV and soft X-ray beamline to provide several new research opportunities in Photon induced processes in the energy range of 6-250 eV for Atomic Molecular and Optical Science (AMOS) research, a domain still less explored both at national as well international level, has been proposed by Atomic and Molecular Physics Division, BARC. This beamline will use a planar permanent magnet (PPM) undulator based on Indus-2 Synchrotron Radiation Source (SRS), a 2.5 GeV third generation electron storage ring at RRCAT, Indore, India and is expected to offer a variety of opportunities for more advanced and sustained investigations for AMOS research. A plane mirror and a toroidal mirror are used as the pre-focusing optics of the AMOS beamline. A varied line spacing plane grating monochromator (VLSPGM) in a converging beam, constant included angle mode containing one toroidal focusing mirror and four interchangeable gratings is to be used to cover the energy range of 6 to 250 eV and obtain resolving powers ∼10 4 and intensity ∼10 12 ph/s at the sample position. A toroidal mirror is used to focus the diverging monochromatic light from the monochromator at a distance of 150 cm with a 1:1 magnification. As the first step towards the beamline optics design, the evaluation of the PPM undulator radiation characteristics relevant to beamline design has been performed using the Indus-2 SRS parameters in the long straight section of the ring, PPM undulator parameters, and the empirical expressions available in literature. The software resources such as XOPS, ESRF, France and SPECTRA, Photon factory, Japan have been used for detailed modelling and verification of the empirical computations. Beamline layout preparation, optimization, imaging performance evaluation, and resolving power calculations for ideal beamline optics are carried out using SHADOWVUI, an extension of XOPS software resource. A new mounting of the optical components in the monochromator has been proposed

Modeling of X-ray beamlines and devices

International Nuclear Information System (INIS)

Ice, G.E.

1996-01-01

X-ray beamlines on synchrotron sources are similar in size and complexity to beamlines at state-of-the-art neutron sources. The design principles, tools, and optimization strategies for synchrotron beamlines are also similar to those of neutron beamlines. The authors describe existing design tools for modeling synchrotron radiation beamlines and describe how these tools have evolved over the last two decades. The development of increasingly powerful modeling tools has been driven by the escalating cost and sophistication of state-of-the-art beamlines and by a world-wide race to exploit advanced synchrotron radiation sources

Support for Synchrotron Access by Environmental Scientists

International Nuclear Information System (INIS)

Daly, Michael; Madden, Andrew; Palumbo, Anthony; Qafoku, N.

2006-01-01

To support ERSP-funded scientists in all aspects of synchrotron-based research at the Advanced Photon Source (APS). This support comes in one or more of the following forms: (1) writing proposals to the APS General User (GU) program, (2) providing time at MRCAT/EnviroCAT beamlines via the membership of the Molecular Environmental Science (MES) Group in MRCAT/EnviroCAT, (3) assistance in experimental design and sample preparation, (4) support at the beamline during the synchrotron experiment, (5) analysis and interpretation of the synchrotron data, and (6) integration of synchrotron experimental results into manuscripts

Beamline Design and Instrumentation for the Imaging and Coherence Beamline I13L at the Diamond Light Source

Science.gov (United States)

Wagner, U. H.; Pešić, Z. D.; De Fanis, A.; Rau, C.

2013-03-01

I13L is a 250 m long hard x-ray beamline (6 keV to 35 keV) at the Diamond Light Source. The beamline comprises of two independent experimental endstations: one for imaging in direct space using x-ray microscopy and one for imaging in reciprocal space using coherent diffraction based imaging techniques. In this paper we will discuss the fundamental design concepts of the beamline and explain their implications for the civil engineering of the endstation building and the beamline instrumentation. For the latter this paper will focus on the beamline mirror systems and monochromators.

Beamline Design and Instrumentation for the Imaging and Coherence Beamline I13L at the Diamond Light Source

International Nuclear Information System (INIS)

Wagner, U H; Pešić, Z D; Fanis, A De; Rau, C

2013-01-01

I13L is a 250 m long hard x-ray beamline (6 keV to 35 keV) at the Diamond Light Source. The beamline comprises of two independent experimental endstations: one for imaging in direct space using x-ray microscopy and one for imaging in reciprocal space using coherent diffraction based imaging techniques. In this paper we will discuss the fundamental design concepts of the beamline and explain their implications for the civil engineering of the endstation building and the beamline instrumentation. For the latter this paper will focus on the beamline mirror systems and monochromators.

The actinide beamline - A new AMS facility at ANTARES

International Nuclear Information System (INIS)

Hotchkis, M.A.C.; Lee, P.J.; Mino, N.

1998-01-01

At the ANTARES accelerator a new beamline has been commissioned, incorporating new magnetic and electrostatic analysers, to optimise the efficiency for Actinides detection by Accelerator Mass Spectrometry. The detection of Actinides, particularly the isotopic ratios of uranium and plutonium, provide unique signatures for nuclear safeguards purposes. We are currently engaged in a project to evaluate the application of AMS to the measurement of Actinides in environmental samples for nuclear safeguards. Measurement of 236 U is of particular interest as a means of tracing the anthropogenic component of uranium. 236 U is expected to be present in natural samples at an extremely low level ( 236 U: 238 U ratio ∼10 -10 ). It has recently been demonstrated that AMS has sufficient sensitivity to detect 236 U at this level. The principal components of the new beamline include: an electrostatic quadrupole, a 12 deg electrostatic deflector, a 90 deg electrostatic analyser, a multi-isotope detection system including ion counters and Faraday cups. The beamline was completed in September 1998 and initial tests have been performed with iodine samples

CERN announces the fourth annual Beamline for Schools competition

CERN Multimedia

BL4S team

2016-01-01

CERN is pleased to announce the fourth annual Beamline for Schools (BL4S) competition. Once again, in 2017, a fully equipped beamline will be made available at CERN for students. As in previous years, two teams will be invited to the Laboratory to execute the experiments they proposed in their applications. The 2017 competition is being made possible thanks to support from the Alcoa Foundation for the second consecutive year.   The competition is open to teams of high-school students aged 16 or older who, if they win, are invited (with two supervisors) to CERN to carry out their experiment. Teams must have at least five students but there is no upper limit to a team’s size (although just nine students per winning team will be invited to CERN). Teams may be composed of pupils from a single school, or from a number of schools working together. As science-loving mega-celebrity Will.I.Am told us: “If you’re interested in science, technology, engineering or ...

Limiting effects in double EEX beamline

Science.gov (United States)

Ha, G.; Power, J. G.; Conde, M.; Doran, D. S.; Gai, W.

2017-07-01

The double emittance exchange (EEX) beamline is suggested to overcome the large horizontal emittance and transverse jitter issues associated with the single EEX beamline while preserving its powerful phase-space manipulation capability. However, the double EEX beamline also has potential limitations due to coherent synchrotron radiation (CSR) and transverse jitter. The former limitation arises because double EEX uses twice as many bending magnets as single EEX which means stronger CSR effects degrading the beam quality. The latter limitation arises because a longitudinal jitter in front of the first EEX beamline is converted into a transverse jitter in the middle section (between the EEX beamlines) which can cause beam loss or beam degradation. In this paper, we numerically explore the effects of these two limitations on the emittance and beam transport.

Limiting effects in double EEX beamline

International Nuclear Information System (INIS)

Ha, G; Power, J G; Conde, M; Doran, D S; Gai, W

2017-01-01

The double emittance exchange (EEX) beamline is suggested to overcome the large horizontal emittance and transverse jitter issues associated with the single EEX beamline while preserving its powerful phase-space manipulation capability. However, the double EEX beamline also has potential limitations due to coherent synchrotron radiation (CSR) and transverse jitter. The former limitation arises because double EEX uses twice as many bending magnets as single EEX which means stronger CSR effects degrading the beam quality. The latter limitation arises because a longitudinal jitter in front of the first EEX beamline is converted into a transverse jitter in the middle section (between the EEX beamlines) which can cause beam loss or beam degradation. In this paper, we numerically explore the effects of these two limitations on the emittance and beam transport. (paper)

Performance of the undulator based ultraviolet and soft x-ray beamline for catalysis and surface science at National Synchrotron Radiation Laboratory

Energy Technology Data Exchange (ETDEWEB)

Du, Liangliang [University of Science and Technology of China, Department of Precision Machinery and Precision Instrumentation, Hefei, Anhui 230029 (China); University of Science and Technology of China, National Synchrotron Radiation Laboratory, Hefei, Anhui 230029 (China); Du, Xuewei, E-mail: xwdu@ustc.edu.cn [University of Science and Technology of China, National Synchrotron Radiation Laboratory, Hefei, Anhui 230029 (China); Wei, Shen [University of Science and Technology of China, National Synchrotron Radiation Laboratory, Hefei, Anhui 230029 (China); Li, Chaoyang [China Academy of Engineering Physics, Mianyang, Sichuan 621900 (China); Pan, Congyuan; Ju, Huanxin [University of Science and Technology of China, National Synchrotron Radiation Laboratory, Hefei, Anhui 230029 (China); Wang, Qiuping, E-mail: qiuping@ustc.edu.cn [University of Science and Technology of China, National Synchrotron Radiation Laboratory, Hefei, Anhui 230029 (China); Zhu, Junfa [University of Science and Technology of China, National Synchrotron Radiation Laboratory, Hefei, Anhui 230029 (China)

2016-12-01

The undulator based ultraviolet and soft x-ray beamline BL11U for catalysis and surface science at National Synchrotron Radiation Laboratory (NSRL) has been under opteration for months and the present performance is described. This beamline utilizes radiation from an in-vacuum undulator, which has 30 magnetic periods with the period length of 40 mm. A varied-line-spacing plane grating monochromator is employed tto cover the photon energy region of 20–600 eV by two gratings with nominal groove densities of 400 llmm and 1200 l/mm respectively. The energy resolution power E/ΔE is measured with a gas ionization chamber and the photon flux is measured by a photodiode. Results show that the resolution power is better than 10,000 at a photon energy of 29.2 eV. And the flux is higher than 1×10{sup 10} phs/s under 300 mA ring beam current for most of the covered photon energy.

Doublet III beamline: as-built

International Nuclear Information System (INIS)

Harder, C.R.; Holland, M.M.; Parker, J.W.; Gunn, J.; Resnick, L.

1980-03-01

In order to fully exploit Doublet III capabilities and to study new plasma physics regimes, a Neutral Beam Injector System has been constructed. Initially, a two beamline system will supply 7 MW of heat to the plasma. The system is currently being expanded to inject approx. 20 MW of power (6 beamlines). Each beamline is equipped with two Lawrence Berkeley Laboratory type rectangular ion sources with 10 cm x 40 cm extraction grids. These sources will accelerate hydrogen ions to 80 keV, with extracted beam currents in excess of 80 A per source expected. The first completed source is currently being tested and conditioned on the High Voltage Test Stand at Lawrence Livermore Laboratory. This paper pictorially reviews the as-built Doublet III neutral beamline with emphasis on component relation and configuration relative to spatial and source imposed design constraints

A Remote and Virtual Synchrotron Beamline

Science.gov (United States)

Jackson, J. M.; Alp, E.; Sturhahn, W.

2012-12-01

National facilities offer one-of-a-kind opportunities to apply state-of-the-art experimental techniques to the pressing scientific problems of today. Yet, few students are able to experience research projects at national facilities due to limited accessibility caused in part by limited involvement in the local academic institution, constrained working areas at the experimental stations, and/or travel costs. We present a virtual and remote beam-line for Earth science studies using nuclear resonant and inelastic x-ray scattering methods at Sector 3 of the Advanced Photon Source at Argonne National Laboratory. Off-site students have the capability of controlling their measurements via secure internet connections and webcams. Students can access a 'view only mode' for ease of interaction and safety-control. More experienced users have exclusive control of the experiment and can remotely change variables within the experimental setup. Students may also access the virtual aspects these experiments by simulating certain conditions with our newly developed software. We evaluate such a tool by giving "before" and "after" assignments to students at different levels. These levels include high-school students from the Pasadena and greater Los Angeles area school districts, undergraduate students from Caltech's SURF/MURF program, and graduate students at Caltech. We specifically target underrepresented groups. Our results thus far show that the capabilities offered by our remote and virtual beamline show improved knowledge and understanding of applying experimental-based studies at the synchrotron to solve problems in the Earth sciences.

Geometrical layout and optics modelling of the surface science beamline station at the SESAME synchrotron radiation facility.

Science.gov (United States)

Salah, Wa'el; Sanchez del Rio, Manuel

2011-05-01

The layout and the optical performance of the SGM branch of the D09 bending-magnet beamline, under construction at SESAME, are presented. The beamline is based on the Dragon-type design and delivers photons over the spectral range 15-250 eV. One fixed entrance slit and a movable exit slit are used. The performance of the beamline has been characterized by calculating the mirror reflectivities and the grating efficiencies. The flux and resolution were calculated by ray-tracing using SHADOW. The grating diffraction efficiencies were calculated using the GRADIF code. The results and the overall shapes of the predicted curves are in reasonable agreement with those obtained using an analytical formula.

Beamlines on the SPring-8 project

Energy Technology Data Exchange (ETDEWEB)

Ohno, Hideo [Japan Atomic Energy Research Inst., Kamigori, Hyogo (Japan). Kansai Research Establishment

1997-03-01

SPring-8 project is going to construct a ultrahigh-brilliance X-ray synchrotron radiation facility and commissioning of the storage ring is expected in Spring 1977. The facility will be available to scientists and engineers of universities, national laboratories and industries not only from Japan but also from abroad. 20 proposals for public beamlines are submitted to the Beamline Committee and the ten public beamlines are scheduled for completion by the end of 1997. (author)

Status of Indus-1 and Indus-2 beamlines

CERN Document Server

Nandedkar, R V

2003-01-01

Indus-1 and Indus-2 are two synchrotron radiation sources that are planned in India. Indus-1 is a 450 MeV electron storage ring for vacuum ultra-violet soft X-ray radiation. This source is operational. Two beamlines, viz. a soft X-ray/vacuum ultra-violet reflectometry beamline and an angle integrated photoelectron spectroscopy beamline are already operational. Angle resolved photoelectron spectroscopy and photophysics beamlines are going to be operational soon. The second Indian synchrotron source is the 2.5 GeV Indus-2 electron storage ring that is under construction and is expected to be ready for commissioning in the year 2003. Of the total 27 beamlines possible on this ring, about 10 beamlines are already planned and are in the design stage.

Status of Indus-1 and Indus-2 beamlines

International Nuclear Information System (INIS)

Nandedkar, R.V.; Sawhney, K.J.S.

2003-01-01

Indus-1 and Indus-2 are two synchrotron radiation sources that are planned in India. Indus-1 is a 450 MeV electron storage ring for vacuum ultra-violet soft X-ray radiation. This source is operational. Two beamlines, viz. a soft X-ray/vacuum ultra-violet reflectometry beamline and an angle integrated photoelectron spectroscopy beamline are already operational. Angle resolved photoelectron spectroscopy and photophysics beamlines are going to be operational soon. The second Indian synchrotron source is the 2.5 GeV Indus-2 electron storage ring that is under construction and is expected to be ready for commissioning in the year 2003. Of the total 27 beamlines possible on this ring, about 10 beamlines are already planned and are in the design stage

Rotary Valve & Beamline Highlights for Fiscal Year 2017

Energy Technology Data Exchange (ETDEWEB)

Fitsos, P [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

2017-09-21

This Fiscal Year (FY) work was divided between continued testing and characterization work of the Rotary Valve (RV) and mechanical engineering support for the beamline hardware stands. This configuration is more like the final setup with the accelerator firing deuterons down the evacuated beamline toward the RV for interaction with the deuterium and neutron production. The beamline cells were part of an experiment to reduce the impact that RV gas would have on the beamline vacuum. This work will be reported separately from this report. Previous testing had been with the beamline at atmospheric pressure and now the goal was to get test results of the RV with it connected to a beamline that’s running at some level of vacuum.

Chemical sciences, annual report 1993

International Nuclear Information System (INIS)

1994-10-01

The Chemical Sciences Division (CSD) is one of eleven research Divisions of the Lawrence Berkeley Laboratory, a DOE National Laboratory. In FY 1993, the Division made considerable progress on developing two end-stations and a beamline to advance combustion dynamics at the Advanced Light Source (ALS). In support of DOE's national role in combustion research and chemical science, the beamline effort will enable researchers from around the world to make fundamental advances in understanding the structure and reactivity of critical reaction intermediates and transients, and in understanding the dynamics of elementary chemical reactions. The Division has continued to place a strong emphasis on full compliance with environmental health and safety guidelines and regulations and has made progress in technology transfer to industry. Finally, the Division has begun a new program in advanced battery research and development that should help strengthen industrial competitiveness both at home and abroad

Chemical sciences, annual report 1993

Energy Technology Data Exchange (ETDEWEB)

1994-10-01

The Chemical Sciences Division (CSD) is one of eleven research Divisions of the Lawrence Berkeley Laboratory, a DOE National Laboratory. In FY 1993, the Division made considerable progress on developing two end-stations and a beamline to advance combustion dynamics at the Advanced Light Source (ALS). In support of DOE`s national role in combustion research and chemical science, the beamline effort will enable researchers from around the world to make fundamental advances in understanding the structure and reactivity of critical reaction intermediates and transients, and in understanding the dynamics of elementary chemical reactions. The Division has continued to place a strong emphasis on full compliance with environmental health and safety guidelines and regulations and has made progress in technology transfer to industry. Finally, the Division has begun a new program in advanced battery research and development that should help strengthen industrial competitiveness both at home and abroad.

Beamline instrumentation and experiment automation for the Rossendorf Beamline at ESRF/Grenoble (F)

International Nuclear Information System (INIS)

Oehme, W.; Dienel, S.; Proehl, D.

2000-03-01

The Rossendorf research center finished the work (from 1996 - 1998) for building its own beamline for experiments with synchrotron radiation at the ESRF (European Synchrotron Radiation Facility) at Grenoble/France. The beamline has two measuring systems for alternative use for experiments investigating radioactive samples by means of X-ray absorption spectrometry, and materials structures by means of X-ray diffraction analyses. The report in hand focuses on work performed required for the control equipment for optical systems and performance of the measuring systems with respect to electronics, calculation methods, and software. Hardware components of importance to system instrumentation are explained, as well as the basic computing tasks and general software principles, and are illustrated with some examples. The general setting of the beamline is represented in a tabulated overview. The literature list serves as a guideline for detailed documentation. (orig./CB) [de

Beamline 9.3.2 - a high-resolution, bend-magnet beamline with circular polarization capability

Energy Technology Data Exchange (ETDEWEB)

Moler, E.J.; Hussain, Z.; Howells, M.R. [Lawrence Berkeley National Lab., CA (United States)] [and others

1997-04-01

Beamline 9.3.2 is a high resolution, SGM beamline on an ALS bending magnet with access to photon energies from 30-1500 eV. Features include circular polarization capability, a rotating chamber platform that allows switching between experiments without breaking vacuum, an active feedback system that keeps the beam centered on the entrance slit of the monochromator, and a bendable refocusing mirror. The beamline optics consist of horizontally and vertically focussing mirrors, a Spherical Grating Monochromator (SGM) with movable entrance and exit slits, and a bendable refocussing mirror. In addition, a movable aperature has been installed just upstream of the vertically focussing mirror which can select the x-rays above or below the plane of the synchrotron storage ring, allowing the user to select circularly or linearly polarized light. Circularly polarized x-rays are used to study the magnetic properties of materials. Beamline 9.3.2 can supply left and right circularly polarized x-rays by a computer controlled aperture which may be placed above or below the plane of the synchrotron storage ring. The degree of linear and circular polarization has been measured and calibrated.

The synchrotron radiation beamline as a pedagogical tool in engineering schools and universities

International Nuclear Information System (INIS)

Bernaud, Pascal; Ceppi, Antonia; Morenton, Pascal; Gillet, Jean-Michel; Fournier, Benjamin

2009-01-01

As many superior education systems, French Grandes Ecoles have a need for a renewal of their pedagogy when teaching technical and scientific disciplines. The necessity of a multidisciplinary approach and a more efficient presentation of new collaborative tools (based on NICT) are among new key issues teachers are facing. We report an original pedagogical activity at Ecole Centrale Paris based on the multiple scientific aspects provided by the design of storage ring based synchrotron radiation beamlines. We intend to explain why this course has become a unique occasion for the student to discover how their basic knowledge in physics, heat transfer, mechanics, choice of materials and even social sciences can be put into practice. After five years, this course named 'integrated design of a synchrotron beamline' has significantly increased the students' interest for basic and applied sciences. Results from a survey taken over the last four years are given. (author)

A Test Beamline on Diamond Light Source

International Nuclear Information System (INIS)

Sawhney, K. J. S.; Dolbnya, I. P.; Tiwari, M. K.; Alianelli, L.; Scott, S. M.; Preece, G. M.; Pedersen, U. K.; Walton, R. D.

2010-01-01

A Test beamline B16 has been built on the 3 GeV Diamond synchrotron radiation source. The beamline covers a wide photon energy range from 2 to 25 keV. The beamline is highly flexible and versatile in terms of the available beam size (a micron to 100 mm) and the range of energy resolution and photon flux; by virtue of its several operational modes, and the different inter-changeable instruments available in the experiments hutch. Diverse experimental configurations can be flexibly configured using a five-circle diffractometer, a versatile optics test bench, and a suite of detectors. Several experimental techniques including reflectivity, diffraction and imaging are routinely available. Details of the beamline and its measured performance are presented.

Radiation-resistant beamline components at LAMPF

International Nuclear Information System (INIS)

Macek, R.J.; Grisham, D.L.; Lambert, J.e.; Werbeck, R.

1983-01-01

A variety of highly radiation-resistant beamline components have been successfully developed at LAMPF primarily for use in the target cells and beam stop area of the intense proton beamline. Design features and operating experience are reviewed for magnets, instrumentation, targets, vacuum seals, vacuum windows, collimators, and beam stops

Social Science Collaboration with Environmental Health.

Science.gov (United States)

Hoover, Elizabeth; Renauld, Mia; Edelstein, Michael R; Brown, Phil

2015-11-01

Social science research has been central in documenting and analyzing community discovery of environmental exposure and consequential processes. Collaboration with environmental health science through team projects has advanced and improved our understanding of environmental health and justice. We sought to identify diverse methods and topics in which social scientists have expanded environmental health understandings at multiple levels, to examine how transdisciplinary environmental health research fosters better science, and to learn how these partnerships have been able to flourish because of the support from National Institute of Environmental Health Sciences (NIEHS). We analyzed various types of social science research to investigate how social science contributes to environmental health. We also examined NIEHS programs that foster social science. In addition, we developed a case study of a community-based participation research project in Akwesasne in order to demonstrate how social science has enhanced environmental health science. Social science has informed environmental health science through ethnographic studies of contaminated communities, analysis of spatial distribution of environmental injustice, psychological experience of contamination, social construction of risk and risk perception, and social impacts of disasters. Social science-environmental health team science has altered the way scientists traditionally explore exposure by pressing for cumulative exposure approaches and providing research data for policy applications. A transdisciplinary approach for environmental health practice has emerged that engages the social sciences to paint a full picture of the consequences of contamination so that policy makers, regulators, public health officials, and other stakeholders can better ameliorate impacts and prevent future exposure. Hoover E, Renauld M, Edelstein MR, Brown P. 2015. Social science collaboration with environmental health. Environ Health

Beamline for Schools Safety Awareness Day

CERN Multimedia

Photo Service, CERN

2014-01-01

The first two teams to participate in CERN's Beamline for Schools project spent their first day at CERN at the Safety Training Center in Prévessin. They covered amongst others radiation protection, cryogenics and fire-fighting. The teams will spend the rest of the week at the T9 beamline.

The BEAR Beamline at Elettra

International Nuclear Information System (INIS)

Nannarone, S.; Pasquali, L.; Selvaggi, G.; Borgatti, F.; DeLuisa, A.; Doyle, B.P.; Gazzadi, G.C.; Giglia, A.; Finetti, P.; Pedio, M.; Mahne, N.; Naletto, G.; Pelizzo, M.G.; Tondello, G.

2004-01-01

The BEAR (Bending Magnet for Emission Absorption and Reflectivity) beamline is installed at the right exit of the 8.1 bending magnet at ELETTRA. The beamline - in operation since January 2003 - delivers linear and circularly polarized radiation in the 5 - 1600 eV energy range. The experimental station is composed of a UHV chamber for reflectivity, absorption, fluorescence and angle resolved photoemission measurements and a UHV chamber for in-situ sample preparation

EPICS and its role in data acquisition and beamline control

International Nuclear Information System (INIS)

Mooney, T. M.; Arnold, N. D.; Boucher, E.; Cha, B. K.; Goetze, K. A.; Kraimer, M. R.; Rivers, M. L.; Sluiter, R. L.; Sullivan, J. P.; Wallis, D. B.

1999-01-01

Beamline-control and data-acquisition software based on EPICS (a tool kit for building distributed control systems) has been running on many Advanced Photon Source beamlines for several years. EPICS itself, the collaborative software-development effort surrounding it, and EPICS-based beamline software have been described previously in general terms. This talk will review and update that material, focusing on the role EPICS core software plays in beamline applications and on the effects of a few defining characteristics of EPICS on the beamline software we have developed with it

Distributed control of protein crystallography beamline 5.0 using CORBA

International Nuclear Information System (INIS)

Timossi, Chris

1999-01-01

The Protein Crystallography Beamline at Berkeley Lab's Advanced Light Source is a facility that is being used to solve the structure of proteins. The software that is being used to control this beamline uses Java for user interface applications which communicate via CORBA with workstations that control the beamline hardware. We describe the software architecture for the beamline and our experiences after two years of operation

The BESSY X-ray microfocus beamline project

International Nuclear Information System (INIS)

Erko, A.; Schaefers, F.; Firsov, A.; Peatman, W.B.; Eberhardt, W.; Signorato, R.

2004-01-01

The design and construction of a beamline dedicated to X-ray absorption spectroscopy, X-ray fluorescence analysis, X-ray diffraction and X-ray small-angle scattering measurements with micron and submicron spatial resolution in the photon energy range of 1.9-30 keV are reported here. The main feature of the beamline is a combination of all these methods in one experimental station. The source will be a BESSY 7-T wavelength shifter, which is already in operation. Such a wavelength shifter with its continuous spectrum is an optimum source for these experiments. Glass capillaries and the combination of a linear Bragg-Fresnel lens and bimorph mirror were chosen as the special optical components in the beamline. This beamline will open for BESSY users the possibility to perform experiments on the same sample applying a microfocused X-ray beam in combination with advanced experimental methods

Environmental Science for All? Considering Environmental Science for Inclusion in the High School Core Curriculum

Science.gov (United States)

Edelson, Daniel C.

2007-01-01

With the dramatic growth of environmental science as an elective in high schools over the last decade, educators have the opportunity to realistically consider the possibility of incorporating environmental science into the core high school curriculum. Environmental science has several characteristics that make it a candidate for the core…

Automation in structural biology beamlines of the Photon Factory

International Nuclear Information System (INIS)

Igarashi, Noriyuki; Hiraki, Masahiko; Matsugaki, Naohiro; Yamada, Yusuke; Wakatsuki, Soichi

2007-01-01

The Photon Factory currently operates four synchrotron beamlines for protein crystallography and two more beamlines are scheduled to be constructed in the next years. Over the last years these beamlines have been upgraded and equipped with a fully automated beamline control system based on a robotic sample changer. The current system allows for remote operation, controlled from the user's area, of sample mounting, centering and data collection of pre-frozen crystals mounted in Hampton-type cryo-loops on goniometer head. New intuitive graphical user interfaces have been developed so as to control the complete beamline operation. Furthermore, algorithms for automatic sample centering based on pattern matching and X-ray beam scanning are being developed and combined with newly developed diffraction evaluation programs in order to complete entire automation of the data collection. (author)

Generic radiation safety design for SSRL synchrotron radiation beamlines

Energy Technology Data Exchange (ETDEWEB)

Liu, James C. [Radiation Protection Department, Stanford Linear Accelerator Center (SLAC), MS 48, P.O. Box 20450, Stanford, CA 94309 (United States)]. E-mail: james@slac.stanford.edu; Fasso, Alberto [Radiation Protection Department, Stanford Linear Accelerator Center (SLAC), MS 48, P.O. Box 20450, Stanford, CA 94309 (United States); Khater, Hesham [Radiation Protection Department, Stanford Linear Accelerator Center (SLAC), MS 48, P.O. Box 20450, Stanford, CA 94309 (United States); Prinz, Alyssa [Radiation Protection Department, Stanford Linear Accelerator Center (SLAC), MS 48, P.O. Box 20450, Stanford, CA 94309 (United States); Rokni, Sayed [Radiation Protection Department, Stanford Linear Accelerator Center (SLAC), MS 48, P.O. Box 20450, Stanford, CA 94309 (United States)

2006-12-15

To allow for a conservative, simple, uniform, consistent, efficient radiation safety design for all SSRL beamlines, a generic approach has been developed, considering both synchrotron radiation (SR) and gas bremsstrahlung (GB) hazards. To develop the methodology and rules needed for generic beamline design, analytic models, the STAC8 code, and the FLUKA Monte Carlo code were used to pre-calculate sets of curves and tables that can be looked up for each beamline safety design. Conservative beam parameters and standard targets and geometries were used in the calculations. This paper presents the SPEAR3 beamline parameters that were considered in the design, the safety design considerations, and the main pre-calculated results that are needed for generic shielding design. In the end, the rules and practices for generic SSRL beamline design are summarized.

Environmental science: A new opportunity for soil science

Energy Technology Data Exchange (ETDEWEB)

Pepper, I.L.

2000-01-01

During the golden era of soil science--from the 1950s to the 1980s--the main focus of this discipline was on the role of soil in production agriculture. More recently, renewed interest in the area of environmental science has offered new opportunities to soil scientists. Thus, many soil scientists are now working in areas such as bioremediation, waste recycling, and/or contaminant transport. Environmental science has, therefore, not only changed the traditional research role of soil scientists at land grant institutions but has also influenced student enrollment, the traditional soil science curriculum, and faculty recruitment. These changes require a new breed of soil scientist, one with a background not only in soil science but also in other areas of environmental science as well.

Rossendorf Beamline at ESRF (ROBL-CRG). Bi-annual report 2009/2010

International Nuclear Information System (INIS)

Scheinost, Andreas C.; Baehtz, Carsten

2011-01-01

The Rossendorf Beamline (ROBL) - located at BM20 of the European Synchrotron Radiation Facility (ESRF) in Grenoble, France - is in operation since 1998. This 7th report covers the period from January 2009 to December 2010. In these two years, 67 peer- reviewed papers have been published based on experiments done at the beamline, more than in any biannual period before. Six highlight reports have been selected for this report to demonstrate the scientific strength and diversity of the experiments performed on the two end-stations of the beamline, dedicated to Radiochemistry (RCH) and Materials Research (MRH). The beamtime was more heavily overbooked than ever before, with an acceptance rate of only 25% experiments. We would like to thank our external proposal review members, Prof. Andre Maes (KU Leuven, Belgium), Prof. Laurent Charlet (UJF Grenoble, France), Dr. Andreas Leinweber (MPI Metallforschung, Stuttgart, Germany), Prof. David Rafaja (TU Bergakademie Freiberg, Germany), Prof. Dirk Meyer (TU Dresden, Germany), who evaluated the inhouse proposals in a thorough manner, thereby ensuring that beamtime was distributed according to scientific merit. The period was not only characterized by very successful science, but also by intense work on the optics upgrade. In spring 2009, a workshop was held at ROBL, assembling beamline experts from German, Spanish and Swiss synchrotrons, to evaluate the best setup for the new optics. These suggestions was used to prepare the call for tender published in July 2009. From the tender acceptance in November 2009 on, a series of design review meetings and factory acceptance tests followed. Already in July 2010, the first piece of equipment was delivered, the new double-crystal, double-multilayer monochromator. The disassembly of the old optics components started end of July, 2011, followed by the installation of the new components. As of December 2011, the new optics have seen the first test beam and thorough hot commissioning will

Rossendorf Beamline at ESRF (ROBL-CRG). Bi-annual report 2009/2010

Energy Technology Data Exchange (ETDEWEB)

Scheinost, Andreas C; Baehtz, Carsten [eds.

2011-07-01

The Rossendorf Beamline (ROBL) - located at BM20 of the European Synchrotron Radiation Facility (ESRF) in Grenoble, France - is in operation since 1998. This 7th report covers the period from January 2009 to December 2010. In these two years, 67 peer- reviewed papers have been published based on experiments done at the beamline, more than in any biannual period before. Six highlight reports have been selected for this report to demonstrate the scientific strength and diversity of the experiments performed on the two end-stations of the beamline, dedicated to Radiochemistry (RCH) and Materials Research (MRH). The beamtime was more heavily overbooked than ever before, with an acceptance rate of only 25% experiments. We would like to thank our external proposal review members, Prof. Andre Maes (KU Leuven, Belgium), Prof. Laurent Charlet (UJF Grenoble, France), Dr. Andreas Leinweber (MPI Metallforschung, Stuttgart, Germany), Prof. David Rafaja (TU Bergakademie Freiberg, Germany), Prof. Dirk Meyer (TU Dresden, Germany), who evaluated the inhouse proposals in a thorough manner, thereby ensuring that beamtime was distributed according to scientific merit. The period was not only characterized by very successful science, but also by intense work on the optics upgrade. In spring 2009, a workshop was held at ROBL, assembling beamline experts from German, Spanish and Swiss synchrotrons, to evaluate the best setup for the new optics. These suggestions was used to prepare the call for tender published in July 2009. From the tender acceptance in November 2009 on, a series of design review meetings and factory acceptance tests followed. Already in July 2010, the first piece of equipment was delivered, the new double-crystal, double-multilayer monochromator. The disassembly of the old optics components started end of July, 2011, followed by the installation of the new components. As of December 2011, the new optics have seen the first test beam and thorough hot commissioning will

APS 6BM-B Large Volume High Pressure Beamline: A Workhorse for Rock and Mineral Physics

Science.gov (United States)

Chen, H.; Whitaker, M. L.; Baldwin, K. J.; Huebsch, W. R.; Vaughan, M. T.; Weidner, D. J.

2017-12-01

With the inheritance of decades of technical innovations at the NSLS X17B2 Beamline, APS 6BM-B Beamline was established in 2015 and is a dedicated beamline for synchrotron-based large volume high pressure research in earth sciences, especially rock and mineral physics. Currently a 250-ton hydraulic press equipped with a D-DIA module is installed and a Rotational Drickamer Apparatus from Yale University is hosted every cycle, covering a pressure range from crust to lower mantle. 6BM-B operates in white beam mode with an effective energy range of 20-100 keV. Energy dispersive X-ray diffraction data is collected using a 10-element solid state Ge array detector arranged in a circular geometry to allow for the real time assessment of stress. Direct radiographic imaging using Prosillica CCD camera and scintillating YAG crystals yields sample strain and strain rate. In addition to applications in phase transitions, equation of states measurements, sound velocity measurements, this setup is ideal for studies of steady state and dynamic deformation process. In this presentation, technical features and strengths of 6BM-B will be discussed. Most recent progress and science highlights of our user community will be showcased.

A dedicated superbend x-ray microdiffraction beamline for materials, geo-, and environmental sciences at the advanced light source

Energy Technology Data Exchange (ETDEWEB)

Advanced Light Source; Kunz, Martin; Tamura, Nobumichi; Chen, Kai; MacDowell, Alastair A.; Celestre, Richard S.; Church, Matthew M.; Fakra, Sirine; Domning, Edward E.; Glossinger, James M.; Kirschman, Jonathan L.; Morrison, Gregory Y.; Plate, Dave W.; Smith, Brian V.; Warwick, Tony; Padmore, Howard A.; Ustundag, Ersan; Yashchuk, Valeriy V.

2009-03-24

A new facility for microdiffraction strain measurements and microfluorescence mapping has been built on beamline 12.3.2 at the advanced light source of the Lawrence Berkeley National Laboratory. This beamline benefits from the hard x-radiation generated by a 6 T superconducting bending magnet (superbend) This provides a hard x-ray spectrum from 5 to 22 keV and a flux within a 1 mu m spot of ~;;5x109 photons/ s (0.1percent bandwidth at 8 keV). The radiation is relayed from the superbend source to a focus in the experimental hutch by a toroidal mirror. The focus spot is tailored bytwo pairs of adjustable slits, which serve as secondary source point. Inside the lead hutch, a pair of Kirkpatrick-Baez (KB) mirrors placed in a vacuum tank refocuses the secondary slit source onto the sample position. A new KB-bending mechanism with active temperature stabilization allows for more reproducible and stable mirror bending and thus mirror focusing. Focus spots around 1 um are routinely achieved and allow a variety of experiments, which have in common the need of spatial resolution. The effective spatial resolution (~;;0.2 mu m) is limited by a convolution of beam size, scan-stage resolution, and stage stability. A four-bounce monochromator consisting of two channel-cut Si(111) crystals placed between the secondary source and KB-mirrors allows for easy changes between white-beam and monochromatic experiments while maintaining a fixed beam position. High resolution stage scans are performed while recording a fluorescence emission signal or an x-ray diffraction signal coming from either a monochromatic or a white focused beam. The former allows for elemental mapping, whereas the latter is used to produce two-dimensional maps of crystal-phases, -orientation, -texture, and -strain/stress. Typically achieved strain resolution is in the order of 5x10-5 strain units. Accurate sample positioning in the x-ray focus spot is achieved with a commercial laser-triangulation unit. A Si

Muon Beamline Commissioning and Feasibility Study for μSR at a New DC Muon Beamline, MuSIC-RCNP, Osaka University

Science.gov (United States)

Tomono, Dai; Fukuda, Mitsuhiro; Hatanaka, Kichiji; Higemoto, Wataru; Kawashima, Yoshitaka; Kojima, Kenji M.; Kuno, Yoshitaka; Matsuda, Yugo; Matsuzaki, Teiichiro; Miyake, Yasuhiro; Miyamoto, Koichiro; Morita, Yasuyuki; Motoishi, Takahiro; Nakazawa, Yu; Ninomiya, Kazuhiko; Nishikawa, Ryo; Ohta, Saki; Sato, Akira; Shimomura, Koichiro; Takahisa, Keiji; Weichao, Yao; Wong, Ming L.

At the new DC muon beamline MuSIC at Research Center for Nuclear Physics (RCNP), Osaka University, the beamline construction from the solenoid system of the muon production to the experimental port was completed. A beamline commissioning and a feasibility study for μSR are now in progress. With newly refurbished spectrometer installed at the experimental port, we succeeded in observing μSR spectra and μ-e decay asymmetry in a simple setup down to 4 K. We are still under development of other μSR appratuses.

Upgrade of Spring-8 Beamline Network with Vlan Technology Over Gigabit Ethernet

OpenAIRE

Ishii, M.; Fukui, T.; Furukawa, Y.; Nakatani, T.; Ohata, T.; Tanaka, R.

2001-01-01

The beamline network system at SPring-8 consists of three LANs; a BL-LAN for beamline component control, a BL-USER-LAN for beamline experimental users and an OA-LAN for the information services. These LANs are interconnected by a firewall system. Since the network traffic and the number of beamlines have increased, we upgraded the backbone of BL-USER-LAN from Fast Ethernet to Gigabit Ethernet. And then, to establish the independency of a beamline and to raise flexibility of every beamline, we...

Baking controller for synchrotron beamline vacuum systems

International Nuclear Information System (INIS)

Garg, C.K.; Kane, S.R.; Dhamgaye, V.P.

2003-01-01

The 2.5 GeV electron storage ring Indus-2 is a hard X-ray Synchrotron Radiation (SR) Source. Nearly 27 beamlines will be installed on Indus-2 and they will cater to different experiments and applications. Most of the beamlines will be in Ultra High Vacuum (UHV) the only exception being hard X-rays beamlines. However the front ends of all the beamlines will be in UHV. Practicing UHV requires efforts and patience. Evacuating any chamber, volume gases can be removed easily. However, outgassing phenomena like desorption, diffusion and permeation restricts the system to attain UHV. All processes except the volume gas removal are temperature dependent. At ambient temperature, gas pressure decreases so slowly that outgassing limit (i.e. 10 -10 1/s/cm 2 ) can hardly be achieved on a practical time scale. Also there are three orders of magnitude difference in outgassing between baked and unbaked systems. Depending on the vacuum chamber and the components inside it, the thermal outgassing (baking) of system is required and can be done at various temperatures between 150 degC to 450 deg C. For whole baking cycle, constant monitoring and controlling of the systems is required which takes tens of hours. This paper describes the automation for such baking system, which will be used for SR beamlines

Diamond Beamline I16 (Materials and Magnetism)

International Nuclear Information System (INIS)

Collins, S. P.; Bombardi, A.; Marshall, A. R.; Williams, J. H.; Barlow, G.; Day, A. G.; Pearson, M. R.; Woolliscroft, R. J.; Walton, R. D.; Beutier, G.; Nisbet, G.

2010-01-01

We describe the key features and performance specifications of a facility for high-resolution single-crystal x-ray diffraction at Diamond Light Source. The scientific emphasis of the beamline is materials- and x-ray-physics, including resonant and magnetic scattering. We highlight some of the more novel aspects of the beamline design.

Beamline for Schools 2016: How to be a CERN scientist

CERN Document Server

2016-01-01

Two teams of high-school students from the UK and Poland had the opportunity to conduct their own experiments at a fully equipped CERN beamline.   Students from the 2016 Beamline for Schools competition working on their experiment. (Image: Noemí Carabán Gonzalez/CERN) Two teams of high-school students from the UK and Poland had the opportunity to conduct their own experiments at a fully equipped CERN beamline, after winning the Beamline for Schools competition. The teams, ”Pyramid Hunters” from Poland and “Relatively Special” from the United Kingdom, spent 10 days at CERN conducting the experiments they had dreamt up in their winning proposals. The Beamline for Schools competition gives high-school students the chance to run an experiment on a fully equipped CERN beamline, in the same way researchers do at the Large Hadron Collider and other CERN facilities every day. To know more about their stay at CERN and the experiments they&r...

Recent Major Improvements to the ALS Sector 5 Macromolecular Crystallography Beamlines

International Nuclear Information System (INIS)

Morton, Simon A.; Glossinger, James; Smith-Baumann, Alexis; McKean, John P.; Trame, Christine; Dickert, Jeff; Rozales, Anthony; Dauz, Azer; Taylor, John; Zwart, Petrus; Duarte, Robert; Padmore, Howard; McDermott, Gerry; Adams, Paul

2007-01-01

Although the Advanced Light Source (ALS) was initially conceived primarily as a low energy (1.9GeV) 3rd generation source of VUV and soft x-ray radiation it was realized very early in the development of the facility that a multipole wiggler source coupled with high quality, (brightness preserving), optics would result in a beamline whose performance across the optimal energy range (5-15keV) for macromolecular crystallography (MX) would be comparable to, or even exceed, that of many existing crystallography beamlines at higher energy facilities. Hence, starting in 1996, a suite of three beamlines, branching off a single wiggler source, was constructed, which together formed the ALS Macromolecular Crystallography Facility. From the outset this facility was designed to cater equally to the needs of both academic and industrial users with a heavy emphasis placed on the development and introduction of high throughput crystallographic tools, techniques, and facilities--such as large area CCD detectors, robotic sample handling and automounting facilities, a service crystallography program, and a tightly integrated, centralized, and highly automated beamline control environment for users. This facility was immediately successful, with the primary Multiwavelength Anomalous Diffraction beamline (5.0.2) in particular rapidly becoming one of the foremost crystallographic facilities in the US--responsible for structures such as the 70S ribosome. This success in-turn triggered enormous growth of the ALS macromolecular crystallography community and spurred the development of five additional ALS MX beamlines all utilizing the newly developed superconducting bending magnets ('superbends') as sources. However in the years since the original Sector 5.0 beamlines were built the performance demands of macromolecular crystallography users have become ever more exacting; with growing emphasis placed on studying larger complexes, more difficult structures, weakly diffracting or smaller

Computer control of the ISX-B neutral injection beamlines

International Nuclear Information System (INIS)

Hanna, P.C.

1982-09-01

A system of controls for the Impurity Study Experiment (ISX-B) neutral injection beamlines at the Oak Ridge National Laboratory is presented. The system uses standard CAMAC equipment interfaced to the actual beamline controls and driven by a PDP-11/34 mini-computer. It is designed to relieve the operator of most of the mundane tasks of beam injection and also to reduce the number of operators needed to monitor multiple beamlines

10 years of protein crystallography at AR-NW12A beamline

Science.gov (United States)

Chavas, L. M. G.; Yamada, Y.; Hiraki, M.; Igarashi, N.; Matsugaki, N.; Wakatsuki, S.

2013-03-01

The exponential growth of protein crystallography can be observed in the continuously increasing demand for synchrotron beam time, both from academic and industrial users. Nowadays, the screening of a profusion of sample crystals for more and more projects is being implemented by taking advantage of fully automated procedures at every level of the experiments. The insertion device AR-NW12A beamline is one of the five macromolecular crystallography (MX) beamlines at the Photon Factory (PF). Currently the oldest MX beamline operational at the High Energy Accelerator Research Organization (KEK), the end-station was launched in 2001 as part of an upgrade of the PF Advanced Ring. Since its commissioning, AR-NW12A has been operating as a high-throughput beamline, slowly evolving to a multipurpose end-station for MX experiments. The development of the beamline took place about a decade ago, in parallel with a drastic development of protein crystallography and more general synchrotron technology. To keep the beamline up-to-date and competitive with other MX stations in Japan and worldwide, new features have been constantly added, with the goal of user friendliness of the various beamline optics and other instruments. Here we describe the evolution of AR-NW12A for its tenth anniversary. We also discuss the plans for upgrades for AR-NW12A, the future objectives in terms of the beamline developments, and especially the strong desire to open the beamline to a larger user community.

Data Management System at the Photon Factory Macromolecular Crystallography Beamline

International Nuclear Information System (INIS)

Yamada, Y; Matsugaki, N; Chavas, L M G; Hiraki, M; Igarashi, N; Wakatsuki, S

2013-01-01

Macromolecular crystallography is a very powerful tool to investigate three-dimensional structures of macromolecules at the atomic level, and is widely spread among structural biology researchers. Due to recent upgrades of the macromolecular crystallography beamlines at the Photon Factory, beamline throughput has improved, allowing more experiments to be conducted during a user's beam time. Although the number of beamlines has increased, so has the number of beam time applications. Consequently, both the experimental data from users' experiments and data derived from beamline operations have dramatically increased, causing difficulties in organizing these diverse and large amounts of data for the beamline operation staff and users. To overcome this problem, we have developed a data management system by introducing commercial middleware, which consists of a controller, database, and web servers. We have prepared several database projects using this system. Each project is dedicated to a certain aspect such as experimental results, beam time applications, beam time schedule, or beamline operation reports. Then we designed a scheme to link all the database projects.

The ELIMED transport and dosimetry beamline for laser-driven ion beams

Energy Technology Data Exchange (ETDEWEB)

Romano, F., E-mail: francesco.romano@lns.infn.it [Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali del Sud, Via Santa Sofia 62, Catania (Italy); Schillaci, F.; Cirrone, G.A.P.; Cuttone, G. [Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali del Sud, Via Santa Sofia 62, Catania (Italy); Scuderi, V. [Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali del Sud, Via Santa Sofia 62, Catania (Italy); ELI-Beamlines Project, Institute of Physics ASCR, v.v.i. (FZU), 182 21 Prague (Czech Republic); Allegra, L.; Amato, A.; Amico, A.; Candiano, G.; De Luca, G.; Gallo, G. [Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali del Sud, Via Santa Sofia 62, Catania (Italy); Giordanengo, S.; Guarachi, L. Fanola [Istituto Nazionale di Fisica Nucleare, Sezione di Torino, Via P. Giuria 1, Torino (Italy); Universita' di Torino, Dipartimento di Fisica, Via P. Giuria 1, Torino (Italy); Korn, G. [ELI-Beamlines Project, Institute of Physics ASCR, v.v.i. (FZU), 182 21 Prague (Czech Republic); Larosa, G. [Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali del Sud, Via Santa Sofia 62, Catania (Italy); Leanza, R. [Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali del Sud, Via Santa Sofia 62, Catania (Italy); Universita' di Catania, Dipartimento di Fisica e Astronomia, Via S. Sofia 64, Catania (Italy); Manna, R.; Marchese, V. [Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali del Sud, Via Santa Sofia 62, Catania (Italy); Marchetto, F. [Istituto Nazionale di Fisica Nucleare, Sezione di Torino, Via P. Giuria 1, Torino (Italy); Margarone, D. [ELI-Beamlines Project, Institute of Physics ASCR, v.v.i. (FZU), 182 21 Prague (Czech Republic); and others

2016-09-01

A growing interest of the scientific community towards multidisciplinary applications of laser-driven beams has led to the development of several projects aiming to demonstrate the possible use of these beams for therapeutic purposes. Nevertheless, laser-accelerated particles differ from the conventional beams typically used for multiscipilinary and medical applications, due to the wide energy spread, the angular divergence and the extremely intense pulses. The peculiarities of optically accelerated beams led to develop new strategies and advanced techniques for transport, diagnostics and dosimetry of the accelerated particles. In this framework, the realization of the ELIMED (ELI-Beamlines MEDical and multidisciplinary applications) beamline, developed by INFN-LNS (Catania, Italy) and that will be installed in 2017 as a part of the ELIMAIA beamline at the ELI-Beamlines (Extreme Light Infrastructure Beamlines) facility in Prague, has the aim to investigate the feasibility of using laser-driven ion beams for multidisciplinary applications. In this contribution, an overview of the beamline along with a detailed description of the main transport elements as well as the detectors composing the final section of the beamline will be presented.

The Pharmaceutical Industry Beamline of Pharmaceutical Consortium for Protein Structure Analysis

International Nuclear Information System (INIS)

Nishijima, Kazumi; Katsuya, Yoshio

2002-01-01

The Pharmaceutical Industry Beamline was constructed by the Pharmaceutical Consortium for Protein Structure Analysis which was established in April 2001. The consortium is composed of 22 pharmaceutical companies affiliating with the Japan Pharmaceutical Manufacturers Association. The beamline is the first exclusive on that is owned by pharmaceutical enterprises at SPring-8. The specification and equipments of the Pharmaceutical Industry Beamline is almost same as that of RIKEN Structural Genomics Beamline I and II. (author)

Earth, soil and environmental science research facility at sector 13 of the Advanced Photon Source. I. Sector layout and optical design

Energy Technology Data Exchange (ETDEWEB)

Eng, P.; Jaski, Y.R.; Lazarz, N.; Murray, P.; Pluth, J.; Rarback, H.; Rivers, M.; Sutton, S. [CARS, University of Chicago, 5640 S. Ellis Avenue, Chicago, IL (United States)

1996-09-01

The earth, soil and environmental science component (GSECARS) of the Consortium of Advanced Radiation Sources (CARS), is designing a national research facility to be built at sector 13 of the Advanced Photon Source. The bending magnet beam will be split to allow simultaneous operation of two stations, a monochromatic (8{endash}15 keV) side station and a multipurpose, white beam/monochromatic end station. The undulator beamline will have two white beam stations, which may operate simultaneously using a double-crystal monochromator (cryogenic Si) with a thin first crystal. In this mode, the upstream station will accept the monochromatized (4.5{endash}22 keV) beam deflected horizontally by a third (bendable) Ge crystal, while the end station accepts the high energy component (blue beam) transmitted by the first crystal. The need for small x-ray beams and broad spectral range have led us to base the focusing aspects of the optic design on grazing incidence mirrors. Both our bending magnet and insertion device beamlines will have long ({approximately}1 m), bendable mirrors (demagnification {lt}11, E(cut-off) {approx_gt}70 keV; beam sizes {approx_gt}tens of micrometers). For smaller focal spots, we will use small, dynamically bent Kirpatrick-Baez mirrors (demagnification 100{endash}400; E(cut-off) {lt}70 keV; beam sizes {approximately}1 micrometer). A unique aspect of our insertion device beamline is the ability to deliver focused white beam to the sample, through the incorporation of a power management pinhole in the first optics enclosure. {copyright} {ital 1996 American Institute of Physics.}

The Effect of Environmental Science Projects on Students' Environmental Knowledge and Science Attitudes

Science.gov (United States)

Al-Balushi, Sulaiman M.; Al-Aamri, Shamsa S.

2014-01-01

The current study explores the effectiveness of involving students in environmental science projects for their environmental knowledge and attitudes towards science. The study design is a quasi-experimental pre-post control group design. The sample was 62 11th-grade female students studying at a public school in Oman. The sample was divided into…

USGS Environmental health science strategy: providing environmental health science for a changing world: public review release

Science.gov (United States)

Bright, Patricia R.; Buxton, Herbert T.; Balistrieri, Laurie S.; Barber, Larry B.; Chapelle, Francis H.; Cross, Paul C.; Krabbenhoft, David P.; Plumlee, Geoffrey S.; Sleeman, Jonathan M.; Tillitt, Donald E.; Toccalino, Patricia L.; Winton, James R.

2012-01-01

America has an abundance of natural resources. We have bountiful clean water, fertile soil, and unrivaled national parks, wildlife refuges, and public lands. These resources enrich our lives and preserve our health and wellbeing. These resources have been maintained because of our history of respect for their value and an enduring commitment to their vigilant protection. Awareness of the social, economic, and personal value of the health of our environment is increasing. The emergence of environmentally driven diseases caused by environmental exposure to contaminants and pathogens is a growing concern worldwide. New health threats and patterns of established threats are affected by both natural and anthropogenic changes to the environment. Human activities are key drivers of emerging (new and re-emerging) health threats. Societal demands for land and natural resources, a better quality of life, improved economic prosperity, and the environmental impacts associated with these demands will continue to increase. Natural earth processes, climate trends, and related climatic events will add to the environmental impact of human activities. These environmental drivers will influence exposure to disease agents, including viral, bacterial, prion, and fungal pathogens, parasites, natural earth materials, toxins and other biogenic compounds, and synthetic chemicals and substances. The U.S. Geological Survey (USGS) defines environmental health science broadly as the interdisciplinary study of relations among the quality of the physical environment, the health of the living environment, and human health. The interactions among these three spheres are driven by human activities, ecological processes, and natural earth processes; the interactions affect exposure to contaminants and pathogens and the severity of environmentally driven diseases in animals and people. This definition provides USGS with a framework for synthesizing natural science information from across the Bureau

Opening of material analysis beamline (BL-5) at NewSUBARU for industrial enterprises

International Nuclear Information System (INIS)

Hasegawa, Takayuki; Uemura, Masaharu; Tsurui, Takafumi; Shimizu, Masayoshi; Amemiya, Kenta; Fukushima, Sei; Ohta, Toshiaki; Motoyama, Muneyuki; Kanda, Kazuhiro

2010-01-01

A material analysis beamline for the industrial enterprises' use was completed at BL-5 of NewSUBARU synchrotron radiation facility in University of Hyogo in March 2008. BL-5 consists of two branch lines, one is a double crystal monochromator beamline (BL-5A) for the use in the higher-energy region (1300-4000 eV) and the other is a varied line spacing plane grating (VLSPG) monochromator beamline (BL-5B) for the use in the lower-energy region (50-1300 eV). These two branch lines can be operated simultaneously. BL-5 covers the soft X-ray region from 50 to 4000 eV and X-ray absorption spectrum can be measured with a high-energy resolution. The XAFS measurements in the total electron yield (TEY) and fluorescence yield (FLY) can be performed at BL-5A and BL-5B. In addition, the XPS spectra can be measured at BL-5B. BL-5 will be managed and maintained by the Synchrotron Analysis L.L.C. (SALLC), which is composed of the industrial companies, in cooperation with the staffs of the Laboratory of Advanced Science and Technology for Industry in University of Hyogo. Industrial users can be assisted by staffs of SALLC in the measurement at BL-5. (author)

The protein micro-crystallography beamlines for targeted protein research program

International Nuclear Information System (INIS)

Hirata, Kunio; Yamamoto, Masaki; Matsugaki, Naohiro; Wakatsuki, Soichi

2010-01-01

In order to collect proper diffraction data from outstanding micro-crystals, a brand-new data collection system should be designed to provide high signal-to noise ratio in diffraction images. SPring-8 and KEK-PF are currently developing two micro-beam beamlines for Targeted Proteins Research Program by MEXT of Japan. The program aims to reveal the structure and function of proteins that are difficult to solve but have great importance in both academic research and industrial application. At SPring-8, a new 1-micron beam beamline for protein micro-crystallography, RIKEN Targeted Proteins Beamline (BL32XU), is developed. At KEK-PF a new low energy micro-beam beamline, BL-1A, is dedicated for SAD micro-crystallography. The two beamlines will start operation in the end of 2010. The present status of the research and development for protein micro-crystallography will be presented. (author)

WIFIP: a web-based user interface for automated synchrotron beamlines.

Science.gov (United States)

Sallaz-Damaz, Yoann; Ferrer, Jean Luc

2017-09-01

The beamline control software, through the associated graphical user interface (GUI), is the user access point to the experiment, interacting with synchrotron beamline components and providing automated routines. FIP, the French beamline for the Investigation of Proteins, is a highly automatized macromolecular crystallography (MX) beamline at the European Synchrotron Radiation Facility. On such a beamline, a significant number of users choose to control their experiment remotely. This is often performed with a limited bandwidth and from a large choice of computers and operating systems. Furthermore, this has to be possible in a rapidly evolving experimental environment, where new developments have to be easily integrated. To face these challenges, a light, platform-independent, control software and associated GUI are required. Here, WIFIP, a web-based user interface developed at FIP, is described. Further than being the present FIP control interface, WIFIP is also a proof of concept for future MX control software.

National synchrotron light source user's manual: Guide to the VUV and x-ray beamlines: Third edition

International Nuclear Information System (INIS)

Gmuer, N.F.; Thomlinson, W.; White-DePace, S.

1989-01-01

This report contains information on the following topics: A Word on the Writing of Beamline Descriptions; Beamline Equipment Utilization for General Users; the Vacuum Ultraviolet (VUV) Storage Ring and Beamlines; VUV Beamline Descriptions--An Explanation; VUV Beamline Descriptions; X-Ray Storage Ring and Beamlines; X-Ray Beamline Descriptions--An Explanation; and X-Ray Beamline Descriptions

Radiation protection of a proton beamline at ELI-Beamlines

Czech Academy of Sciences Publication Activity Database

Bechet, Sabrina; Versaci, Roberto; Rollet, S.; Olšovcová, Veronika; Fajstavr, Antonín; Žáková, Martina; Margarone, Daniele

2016-01-01

Roč. 11, č. 12 (2016), 1-5, č. článku C12019. ISSN 1748-0221 R&D Projects: GA MŠk EF15_008/0000162 Grant - others:ELI Beamlines(XE) CZ.02.1.01/0.0/0.0/15_008/0000162 Institutional support: RVO:68378271 Keywords : models * simulations * wake-field acceleration Subject RIV: BL - Plasma and Gas Discharge Physics Impact factor: 1.220, year: 2016

Life sciences and environmental sciences

Energy Technology Data Exchange (ETDEWEB)

1992-02-01

The DOE laboratories play a unique role in bringing multidisciplinary talents -- in biology, physics, chemistry, computer sciences, and engineering -- to bear on major problems in the life and environmental sciences. Specifically, the laboratories utilize these talents to fulfill OHER's mission of exploring and mitigating the health and environmental effects of energy use, and of developing health and medical applications of nuclear energy-related phenomena. At Lawrence Berkeley Laboratory (LBL) support of this mission is evident across the spectrum of OHER-sponsored research, especially in the broad areas of genomics, structural biology, basic cell and molecular biology, carcinogenesis, energy and environment, applications to biotechnology, and molecular, nuclear and radiation medicine. These research areas are briefly described.

Life sciences and environmental sciences

Energy Technology Data Exchange (ETDEWEB)

1992-02-01

The DOE laboratories play a unique role in bringing multidisciplinary talents -- in biology, physics, chemistry, computer sciences, and engineering -- to bear on major problems in the life and environmental sciences. Specifically, the laboratories utilize these talents to fulfill OHER`s mission of exploring and mitigating the health and environmental effects of energy use, and of developing health and medical applications of nuclear energy-related phenomena. At Lawrence Berkeley Laboratory (LBL) support of this mission is evident across the spectrum of OHER-sponsored research, especially in the broad areas of genomics, structural biology, basic cell and molecular biology, carcinogenesis, energy and environment, applications to biotechnology, and molecular, nuclear and radiation medicine. These research areas are briefly described.

A second beam-diagnostic beamline for the advanced light source

International Nuclear Information System (INIS)

Sannibale, Fernando; Baum, Dennis; Kelez, Nicholas; Scarvie, Tom; Holldack, Karsten

2003-01-01

A second beamline, BL 7.2, completely dedicated to beam diagnostics is being installed at the Advanced Light Source (ALS). The design has been optimized for the measurement of the momentum spread and emittance of the stored beam in combination with the existing diagnostic beamline, BL 3.1. A detailed analysis of the experimental error has allowed the definition of the system parameters. The obtained requirements found a good matching with a simple and reliable system based on the detection of X-ray synchrotron radiation (SR) through a pinhole system. The actual beamline, which also includes a port for visible and infrared SR as well as an X-ray beam position monitor (BPM), is mainly based on the design of two similar diagnostic beamlines at BESSY II. This approach allowed a significant saving in time, cost and engineering effort. The design criteria, including a summary of the experimental error analysis, as well as a brief description of the beamline are presented

A beamline for macromolecular crystallography at the Advanced Light Source

International Nuclear Information System (INIS)

Padmore, H.A.; Earnest, T.; Kim, S.H.; Thompson, A.C.; Robinson, A.L.

1994-08-01

A beamline for macromolecular crystallography has been designed for the ALS. The source will be a 37-pole wiggler with a, 2-T on-axis peak field. The wiggler will illuminate three beamlines, each accepting 3 mrad of horizontal aperture. The central beamline will primarily be used for multiple-wavelength anomalous dispersion measurements in the wavelength range from 4 to 0.9 angstrom. The beamline optics will comprise a double-crystal monochromator with a collimating pre-mirror and a double-focusing mirror after the monochromator. The two side stations will be used for fixed-wavelength experiments within the wavelength range from 1.5 to 0.95 angstrom. The optics will consist of a conventional vertically focusing cylindrical mirror followed by an asymmetrically cut curved-crystal monochromator. This paper presents details of the optimization of the wiggler source for crystallography, gives a description of the beamline configuration, and discusses the reasons for the choices made

The monitoring system for macromolecular crystallography beamlines at BSRF

International Nuclear Information System (INIS)

Guo Xian; Chang Guangcai; Gan Quan; Shi Hong; Liu Peng; Sun Gongxing

2012-01-01

The monitoring system for macromolecular crystallography beamlines at BSRF (Beijing Synchrotron Radiation Facility) based on LabVIEW is introduced. In order to guarantee a safe, stable, and reliable running for the beamline devices, the system monitors the state of vacuum, cooling-water, optical components, beam, Liquid nitrogen in the beamlines in real time, detects faults and gives the alarm timely. System underlying uses the driver developed for the field devices for data acquisition, Data of collection is uploaded to the data-sharing platform makes it accessible via a network share. The upper system divides modules according to the actual function, and establishes the main interface of the monitoring system of beamline. To Facilitate data storage, management and inquiry, the system use LabSQL toolkit to achieve the interconnection with MySQL database which data of collection is sent to. (authors)

Inelastic X-ray Scattering Beamline Collaborative Development Team Final Report

International Nuclear Information System (INIS)

Burns, Clement

2008-01-01

This is the final report for the project to create a beam line for inelastic x-ray scattering at the Advanced Photon Source. The facility is complete and operating well, with spectrometers for both high resolution and medium resolution measurements. With the advent of third generation synchrotron sources, inelastic x-ray scattering (IXS) has become a valuable technique to probe the electronic and vibrational states of a wide variety of systems of interest in physics, chemistry, and biology. IXS is a weak probe, and experimental setups are complex and require well-optimized spectrometers which need a dedicated beamline to function efficiently. This project was the result of a proposal to provide a world-class, user friendly beamline for IXS at the Advanced Photon Source. The IXS Collaborative Development Team (IXS-CDT) was formed from groups at the national laboratories and a number of different universities. The beamline was designed from the front end to the experimental stations. Two different experimental stations were provided, one for medium resolution inelastic x-ray scattering (MERIX) and a spectrometer for high resolution inelastic x-ray scattering (HERIX). Funding for this project came from several sources as well as the DOE. The beamline is complete with both spectrometers operating well. The facility is now open to the general user community and there has been a tremendous demand to take advantage of the beamline's capabilities. A large number of different experiments have already been carried out on the beamline. A detailed description of the beamline has been given in the final design report (FDR) for the beamline from which much of the material in this report came. The first part of this report contains a general overview of the project with more technical details given later.

LNLS soft x-ray spectroscopy (SXS) beamline

International Nuclear Information System (INIS)

Tolentino, Helio; Rocha, Milton C.; Tamura, Edilson; Cezar, Julio C.; Vicentin, Flavio C.; Giles, Carlos; Compagnon-Cailhol, Valerie; Abbate, Miguel; Cruz, Daniela Z.N.; Mocellin, Alexandra

1996-01-01

The Soft X-ray Spectroscopy beamline will be dedicated to the study of structural, electronic and magnetic properties of materials by using photoabsorption and photoemission techniques, X-ray dischroism will be used to study magnetism of transition metals and rare earths compounds. This beamline is one of the first seven beamlines which were decided to start operation along with the storage ring. Part of the beamline - mostly importations - has been granted by fundings from the state of Sao Paulo (Fapesp). The electron energy analyser came through EEC from a cooperation with a French group at LURE. All components of the beamline are either constructed or bougth and being mounted at the storage ring. The monochromator has already been commissioned under UHV, attaining the specification of 5x10 -9 Torr. To cover the whole energy range, from 800 eV up to 4000 eV, many crystals have been bought, cut and tested. The mirror has been specified in order to focus the source in both directions. Simulations using the Shadow code (source simulation and ray tracing technique) were performed in order to optimize the performance of the optics. We expert to focus 10 mrad down to a spot of 3.0x1.5 mm 2 . The mirror chamber has already been constructed and commissioned under UHV conditions (pressure -9 Torr). The mechanics (mechanical feedthroughs, stability, etc..) has been tested using an X-ray source and has been approved. The experimental chamber has already been used for photoemission experiments using a conventional AL/Mg X-ray source. Many results have been obtained and two master thesis have been performed using this set-up. (author)

VUV-soft x-ray beamline for spectroscopy and calibration

International Nuclear Information System (INIS)

Bartlett, R.J.; Trela, W.J.; Michaud, F.D.; Southworth, S.H.; Rothe, R.; Alkire, R.W.

1986-01-01

The authors describe the design and performance of the Los Alamos VUV synchrotron radiation beamline, U3C, on the VUV ring of the National Synchrotron Light Source at Brookhaven National Laboratory. The beamline uses separate function optics to collect and focus the horizontally and vertically diverging beam. The monochromator is a grazing incidence Roland circle instrument of the extended grasshopper design (ERG). A post monochromator refocusing mirror is used to focus or collimate the diverging beam from the monochromator. The beamline control and diagnostics systems are also discussed

Beamline for X-ray Free Electron Laser of SACLA

International Nuclear Information System (INIS)

Tono, K; Togashi, T; Ohashi, H; Kimura, H; Takahashi, S; Takeshita, K; Tomizawa, H; Goto, S; Inubushi, Y; Sato, T; Yabashi, M

2013-01-01

A beamline for X-ray free electron laser (XFEL) has been developed at SACLA, SPring-8 Angstrom Compact free electron LAser. The beamline delivers and diagnoses an XFEL beam without degrading the beam quality. The transport optics are applicable in the range of 4–30 keV with a double-crystal monochromator or 4–15 keV with either of two double-mirror systems. A photon diagnostic system of the beamline monitors intensity, photon energy, center-of-mass position, and spatial profile in shot-by-shot and non-destructive manners.

Global Journal of Environmental Sciences

African Journals Online (AJOL)

Global Journal of Environmental Sciences is aimed at promoting research in all areas of Environmental Sciences including waste management, pollution control, and remediation of hazards. The journal is published twice a year. Visit the Global Journal Series website here: http://www.globaljournalseries.com/ ...

Simulation and optimization of the SIRIUS IPE soft x-ray beamline

Science.gov (United States)

Meyer, Bernd C.; Rocha, Tulio C. R.; Luiz, Sergio A. L.; C. Pinto, Artur; Westfahl, Harry

2017-08-01

The soft X-ray beamline IPE is one of the first phase SIRIUS beamlines at the LNLS, Brazil. Divided into two branches, IPE is designed to perform ambient pressure X-ray photo-electron spectroscopy (AP-XPS) and high resolution resonant inelastic X-ray scattering (RIXS) for samples in operando/environmental conditions inside cells and liquid jets. The aim is to maximize the photon flux in the energy range 200-1400 eV generated by an elliptically polarizing undulator source (EPU) and focus it to a 1 μm vertical spot size at the RIXS station and 10 μm at the AP-XPS station. In order to achieve the required resolving power (40.000 at 930 eV) for RIXS both the dispersion properties of the plane grating monochromator (PGM) and the thermal deformation of the optical elements need special attention. The grating parameters were optimized with the REFLEC code to maximize the efficiency at the required resolution. Thermal deformation of the PGM plane mirror limits the possible range of cff parameters depending of the photon energy used. Hence, resolution of the PGM and thermal deformation effects define the boundary conditions of the optical concept and the simulations of the IPE beamline. We compare simulations performed by geometrical ray-tracing (SHADOW) and wave front propagation (SRW) and show that wave front diffraction effects (apertures, optical surface error profiles) has a small effect on the beam spot size and shape.

Protein crystallography beamline (PX-BL21); its utilization and research highlights

International Nuclear Information System (INIS)

Kumar, Ashwani; Ghosh, Biplab; Singh, Rahul; Makde, Ravindra; Sharma, Surinder M.

2016-01-01

The protein crystallography beamline (PX-BL21) is sourced on 1.5 T bending magnet of 2.5 GeV Indus-2 synchrotron. This beamline has been designed to perform monochromatic and anomalous diffraction experiments on single crystals of biological macromolecules such as protein, DNA and their complexes. PX beamline also has a state-of-art ancillary biochemical laboratory to prepare single crystals of biological macromolecules. Since the commissioning of the beamline, it has been utilized by more than 70% of research groups working in the area of protein crystallography in India. About 30 crystal structures of proteins, determined using this beamline, have been deposited in Protein Data Bank (PDB). Some of these structures have been determined using experimental phasing, such as the single wavelength anomalous diffraction (SAD) experiments. The energy tunability of the synchrotron have been exploited to carry our various SAD experiments: Selenium-SAD, Zinc-SAD and Manganese-SAD and Sulphar-SAD. In the present talk, the key results from the PX-BL21 beamline will be discussed. (author)

Low cost ESR based X-ray beamline for lithography experimentation

Energy Technology Data Exchange (ETDEWEB)

Kovacs, S.; Doumas, A.; Truncale, M. (Grumman Corp., Bethpage, NY (United States). Space and Electronics Div.)

1992-08-01

Any application of the electron storage ring (ESR) based X-ray lithography technology requires an X-ray radiation transport system to transfer the synchrotron radiation into a spectrum defined by the lithography process requirements. Structure of this transport system (i.e. the beamline) depends on the nature of the application. In this paper a beamline conceptual design will be discussed. The beamline is intended for the developmment of X-ray lithography technology. (orig.).

Advanced light source vacuum policy and vacuum guidelines for beamlines and experiment endstations

International Nuclear Information System (INIS)

Hussain, Z.

1995-08-01

The purpose of this document is to: (1) Explain the ALS vacuum policy and specifications for beamlines and experiment endstations. (2) Provide guidelines related to ALS vacuum policy to assist in designing beamlines which are in accordance with ALS vacuum policy. This document supersedes LSBL-116. The Advanced Light Source is a third generation synchrotron radiation source whose beam lifetime depends on the quality of the vacuum in the storage ring and the connecting beamlines. The storage ring and most of the beamlines share a common vacuum and are operated under ultra-high-vacuum (UHV) conditions. All endstations and beamline equipment must be operated so as to avoid contamination of beamline components, and must include proper safeguards to protect the storage ring vacuum from an accidental break in the beamline or endstation vacuum systems. The primary gas load during operation is due to thermal desorption and electron/photon induced desorption of contaminants from the interior of the vacuum vessel and its components. The desorption rates are considerably higher for hydrocarbon contamination, thus considerable emphasis is placed on eliminating these sources of contaminants. All vacuum components in a beamline and endstation must meet the ALS vacuum specifications. The vacuum design of both beamlines and endstations must be approved by the ALS Beamline Review Committee (BRC) before vacuum connections to the storage ring are made. The vacuum design is first checked during the Beamline Design Review (BDR) held before construction of the beamline equipment begins. Any deviation from the ALS vacuum specifications must be approved by the BRC prior to installation of the equipment on the ALS floor. Any modification that is incorporated into a vacuum assembly without the written approval of the BRC is done at the user's risk and may lead to rejection of the whole assembly

Dedicated Beamline Facilities for Catalytic Research. Synchrotron Catalysis Consortium (SCC)

Energy Technology Data Exchange (ETDEWEB)

Chen, Jingguang [Columbia Univ., New York, NY; Frenkel, Anatoly [Yeshiva Univ., New York, NY (United States); Rodriguez, Jose [Brookhaven National Lab. (BNL), Upton, NY (United States); Adzic, Radoslav [Brookhaven National Lab. (BNL), Upton, NY (United States); Bare, Simon R. [UOP LLC, Des Plaines, IL (United States); Hulbert, Steve L. [Brookhaven National Lab. (BNL), Upton, NY (United States); Karim, Ayman [Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Mullins, David R. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Overbury, Steve [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

2015-03-04

Synchrotron spectroscopies offer unique advantages over conventional techniques, including higher detection sensitivity and molecular specificity, faster detection rate, and more in-depth information regarding the structural, electronic and catalytic properties under in-situ reaction conditions. Despite these advantages, synchrotron techniques are often underutilized or unexplored by the catalysis community due to various perceived and real barriers, which will be addressed in the current proposal. Since its establishment in 2005, the Synchrotron Catalysis Consortium (SCC) has coordinated significant efforts to promote the utilization of cutting-edge catalytic research under in-situ conditions. The purpose of the current renewal proposal is aimed to provide assistance, and to develop new sciences/techniques, for the catalysis community through the following concerted efforts: Coordinating the implementation of a suite of beamlines for catalysis studies at the new NSLS-II synchrotron source; Providing assistance and coordination for catalysis users at an SSRL catalysis beamline during the initial period of NSLS to NSLS II transition; Designing in-situ reactors for a variety of catalytic and electrocatalytic studies; Assisting experimental set-up and data analysis by a dedicated research scientist; Offering training courses and help sessions by the PIs and co-PIs.

First experimental results from IBM/TENN/TULANE/LLNL/LBL undulator beamline at the advanced light source

International Nuclear Information System (INIS)

Jia, J.J.; Callcott, T.A.; Yurkas, J.; Ellis, A.W.; Himpsel, F.J.; Samant, M.G.; Stoehr, J.; Ederer, D.L.; Carlisle, J.A.; Hudson, E.A.; Terminello, L.J.; Shuh, D.K.; Perera, R.C.C.

1995-01-01

The IBM/TENN/TULANE/LLNL/LBL Beamline 8.0 at the advanced light source combining a 5.0 cm, 89 period undulator with a high-throughput, high-resolution spherical grating monochromator, provides a powerful excitation source over a spectral range of 70--1200 eV for surface physics and material science research. The beamline progress and the first experimental results obtained with a fluorescence end station on graphite and titanium oxides are presented here. The dispersive features in K emission spectra of graphite excited near threshold, and found a clear relationship between them and graphite band structure are observed. The monochromator is operated at a resolving power of roughly 2000, while the spectrometer has a resolving power of 400 for these fluorescence experiments

Wavefront propagation simulations for a UV/soft x-ray beamline: Electron Spectro-Microscopy beamline at NSLS-II

Science.gov (United States)

Canestrari, N.; Bisogni, V.; Walter, A.; Zhu, Y.; Dvorak, J.; Vescovo, E.; Chubar, O.

2014-09-01

A "source-to-sample" wavefront propagation analysis of the Electron Spectro-Microscopy (ESM) UV / soft X-ray beamline, which is under construction at the National Synchrotron Light Source II (NSLS-II) in the Brookhaven National Laboratory, has been conducted. All elements of the beamline - insertion device, mirrors, variable-line-spacing gratings and slits - are included in the simulations. Radiation intensity distributions at the sample position are displayed for representative photon energies in the UV range (20 - 100 eV) where diffraction effects are strong. The finite acceptance of the refocusing mirrors is the dominating factor limiting the spatial resolution at the sample (by ~3 μm at 20 eV). Absolute estimates of the radiation flux and energy resolution at the sample are also obtained from the electromagnetic calculations. The analysis of the propagated UV range undulator radiation at different deflection parameter values demonstrates that within the beamline angular acceptance a slightly "red-shifted" radiation provides higher flux at the sample and better energy resolution compared to the on-axis resonant radiation of the fundamental harmonic.

Emittance Measurement for Beamline Extension at the PET Cyclotron

Directory of Open Access Journals (Sweden)

Sae-Hoon Park

2016-01-01

Full Text Available Particle-induced X-ray emission is used for determining the elemental composition of materials. This method uses low-energy protons (of several MeV, which can be obtained from high-energy (of tens MeV accelerators. Instead of manufacturing an accelerator for generating the MeV protons, the use of a PET cyclotron has been suggested for designing the beamline for multipurpose applications, especially for the PIXE experiment, which has a dedicated high-energy (of tens MeV accelerator. The beam properties of the cyclotron were determined at this experimental facility by using an external beamline before transferring the ion beam to the experimental chamber. We measured the beam profile and calculated the emittance using the pepper-pot method. The beam profile was measured as the beam current using a wire scanner, and the emittance was measured as the beam distribution at the beam dump using a radiochromic film. We analyzed the measurement results and are planning to use the results obtained in the simulations of external beamline and aligned beamline components. We will consider energy degradation after computing the beamline simulation. The experimental study focused on measuring the emittance from the cyclotron, and the results of this study are presented in this paper.

African Journals Online: Environmental Sciences

African Journals Online (AJOL)

Items 1 - 28 of 28 ... African Journals Online: Environmental Sciences ... Anthropology, Technology, Computer Science & Engineering, Veterinary Science ... and Metabolism (AJEM) is a biomedical peer-reviewed journal with international circulation. ... AFRREV STECH: An International Journal of Science and Technology.

Environmental Management Science Program Workshop. Proceedings

Energy Technology Data Exchange (ETDEWEB)

None

1998-07-01

The Department of Energy Office of Environmental Management (EM), in partnership with the Office of Energy Research (ER), designed, developed, and implemented the Environmental Management Science Program as a basic research effort to fund the scientific and engineering understanding required to solve the most challenging technical problems facing the government's largest, most complex environmental cleanup program. The intent of the Environmental Management Science Program is to: (1) Provide scientific knowledge that will revolutionize technologies and cleanup approaches to significantly reduce future costs, schedules, and risks. (2) Bridge the gap between broad fundamental research that has wide-ranging applications such as that performed in the Department's Office of Energy Research and needs-driven applied technology development that is conducted in Environmental Management's Office of Science and Technology. (3) Focus the nation's science infrastructure on critical Department of Energy environmental problems. In an effort to share information regarding basic research efforts being funded by the Environmental Management Science Program and the Environmental Management/Energy Research Pilot Collaborative Research Program (Wolf-Broido Program), this CD includes summaries for each project. These project summaries, available in portable document format (PDF), were prepared in the spring of 1998 by the principal investigators and provide information about their most recent project activities and accomplishments.

Discussions for the shielding materials of synchrotron radiation beamline hutches

International Nuclear Information System (INIS)

Asano, Y.

2006-01-01

Many synchrotron radiation facilities are now under operation such as E.S.R.F., APS, and S.P.ring-8. New facilities with intermediated stored electron energy are also under construction and designing such as D.I.A.M.O.N.D., S.O.L.E.I.L., and S.S.R.F.. At these third generation synchrotron radiation facilities, the beamline shielding as well as the bulk shield is very important for designing radiation safety because of intense and high energy synchrotron radiation beam. Some reasons employ lead shield wall for the synchrotron radiation beamlines. One is narrow space for the construction of many beamlines at the experimental hall, and the other is the necessary of many movable mechanisms at the beamlines, for examples. Some cases are required to shield high energy neutrons due to stored electron beam loss and photoneutrons due to gas Bremsstrahlung. Ordinary concrete and heavy concrete are coming up to shield material of synchrotron radiation beamline hutches. However, few discussions have been performed so far for the shielding materials of the hutches. In this presentation, therefore, we will discuss the characteristics of the shielding conditions including build up effect for the beamline hutches by using the ordinary concrete, heavy concrete, and lead for shielding materials with 3 GeV and 8 GeV class synchrotron radiation source. (author)

The Nanoscience Beamline (I06) at Diamond Light Source

International Nuclear Information System (INIS)

Dhesi, S. S.; Cavill, S. A.; Potenza, A.; Marchetto, H.; Mott, R. A.; Steadman, P.; Peach, A.; Shepherd, E. L.; Ren, X.; Wagner, U. H.; Reininger, R.

2010-01-01

The Nanoscience beamline (I06) is one of seven Diamond Phase-I beamlines which has been operational since January 2007 delivering polarised soft x-rays, for a PhotoEmission Electron Microscope (PEEM) and branchline, in the energy range 80-2100 eV. The beamline is based on a collimated plane grating monochromator with sagittal focusing elements, utilising two APPLE II helical undulator sources, and has been designed for high flux density at the PEEM sample position. A ∼5 μm (σ) diameter beam is focussed onto the sample in the PEEM allowing a range of experiments using x-ray absorption spectroscopy (XAS), x-ray magnetic circular dichroism (XMCD) and x-ray magnetic linear dichroism (XMLD) as contrast mechanisms. The beamline is also equipped with a branchline housing a 6T superconducting magnet for XMCD and XMLD experiments. The magnet is designed to move on and off the branchline which allows a diverse range of experiments.

Insertion devices and beamlines for the proposed Australian synchrotron light source

International Nuclear Information System (INIS)

Garrett, R.F.; Boldeman, J.W.

1999-01-01

Full text: The proposed Australian synchrotron light source, Boomerang, is a third generation 3 GeV storage ring which is designed to provide for the great majority of Australian requirements for synchrotron radiation well into the next century. The storage ring could accommodate up to 60 experimental stations, including beamlines from 9 insertion devices, which far exceeds the projected Australian requirements over the life of the facility. Undulator radiation will be available up to 20 keV. The first phase construction of Boomerang includes funding for 9 beamlines, comprising 5 bending magnet and 4 insertion device beamlines. The beamline complement has been chosen to cater for approximately 95% of the current and projected Australian demand for synchrotron radiation over the first 5 years operation of the facility. Details will be shown of the performance of the proposed insertion devices, and the initial beamline complement will be presented

Proceedings of the 6. Banska Stiavnica Days 2004. Environmental impacts on the environment. Trends in environmental sciences and radio-environmental sciences

International Nuclear Information System (INIS)

Hybler, P.; Maruskova, A.

2004-12-01

Scientific conference deals with problems in environmental sciences and radio-environmental sciences. The conference proceeded in two sections: (A) Environmental engineering, (B) Nuclear technologies. Sixty registered people and fifty guests participated on this conference. Twenty-seven presentations and eleven posters were presented. Proceedings contain twenty-six papers from which fourteen papers deal with the scope of INIS

The bio-crystallography beamline (BL41XU) at SPring-8

CERN Document Server

Kawamoto, M; Kamiya, N

2001-01-01

The bio-crystallography beamline (BL41XU), one of two pilot beamlines at SPring-8, was constructed using a standard in-vacuum-type undulator and opened for general users from domestic and overseas countries. Many tests and improvements were carried out on beamline elements and equipment for macromolecular crystallography, especially on the so-called 'pin-post' water cooling crystal of rotated-inclined double crystal monochromator. The maximum brilliance at sample position reached to 4x10 sup 1 sup 5 photons/s/mm sup 2 /mrad sup 2 at an X-ray energy of 11 keV. Commercially available X-ray detectors of CCD and imaging plate were installed in the experimental station. A beamline control software system for beam tracking and an on-line reader for large-format imaging plate were newly developed.

Environmental science and technology

Energy Technology Data Exchange (ETDEWEB)

NONE

2008-07-01

The environmental Science and Technology Program was structured based on the continuous growth of environmental activities on areas related to nuclear programs at IPEN. The program comprehends five main areas: Environmental analysis: Chemical technology; Polymer technology nucleus: Chemical and Isotope characterization and Analytical Chemistry for the Nuclear Fuel Cycle samples.

The ANTARES accelerator: a facility for environmental monitoring and materials characterisation

International Nuclear Information System (INIS)

Tuniz, C.

1997-01-01

An analytical facility for Accelerator Mass Spectrometry (AMS) and Ion Beam Analysis (IBA) has been under development since 1989 on the 8-MV tandem accelerator ANTARES at the Lucas Heights Science and Technology Centre. Three beamlines are presently dedicated to the AMS analysis of long-lived radionuclides and one is used for the study of multilayered semiconductor structures by heavy ion recoil spectrometry. Having accomplished the task of transforming the old nuclear physics accelerator from Rutgers University into a world-class analytical facility, ANSTO scientists are now promoting research projects based on the capability of the ANTARES instruments. New instruments are being constructed on the ANTARES accelerator for future programs in environmental monitoring, safeguards, nuclear waste disposal and applications in advanced materials. A new AMS beamline has been designed that is expected to be capable of measuring rare heavy radionuclides, such as 236 U, 229 , 230T h and 244 Pu, in natural samples with ultra-high sensitivity. A novel, heavy ion microprobe will allow IBA of surfaces with a spatial resolution of 10 μm for high-energy ions (20-100 MeV) from chlorine to iodine. These instruments are complementary to other advanced analytical tools developed by ANSTO, such as the synchrotron radiation beamline at the Australian National Beamline Facility

SPring-8 beamline control system.

Science.gov (United States)

Ohata, T; Konishi, H; Kimura, H; Furukawa, Y; Tamasaku, K; Nakatani, T; Tanabe, T; Matsumoto, N; Ishii, M; Ishikawa, T

1998-05-01

The SPring-8 beamline control system is now taking part in the control of the insertion device (ID), front end, beam transportation channel and all interlock systems of the beamline: it will supply a highly standardized environment of apparatus control for collaborative researchers. In particular, ID operation is very important in a third-generation synchrotron light source facility. It is also very important to consider the security system because the ID is part of the storage ring and is therefore governed by the synchrotron ring control system. The progress of computer networking systems and the technology of security control require the development of a highly flexible control system. An interlock system that is independent of the control system has increased the reliability. For the beamline control system the so-called standard model concept has been adopted. VME-bus (VME) is used as the front-end control system and a UNIX workstation as the operator console. CPU boards of the VME-bus are RISC processor-based board computers operated by a LynxOS-based HP-RT real-time operating system. The workstation and the VME are linked to each other by a network, and form the distributed system. The HP 9000/700 series with HP-UX and the HP 9000/743rt series with HP-RT are used. All the controllable apparatus may be operated from any workstation.

ALS beamline design requirements: A guide for beamline designers

Energy Technology Data Exchange (ETDEWEB)

NONE

1996-06-01

This manual is written as a guide for researchers in designing beamlines and endstations acceptable for use at the ALS. It contains guidelines and policies related to personnel safety and equipment and vacuum protection. All equipment and procedures must ultimately satisfy the safety requirements set aside in the Lawrence Berkeley National Laboratory (LBNL) Health and Safety Manual (PUB-3000) which is available from the ALS User Office or on the World WideWeb from the LBNL Homepage (http:// www.lbl.gov).

G4Beamline Program for Radiation Simulations

International Nuclear Information System (INIS)

Beard, Kevin; Roberts, Thomas J.; Degtiarenko, Pavel

2008-01-01

G4beamline, a program that is an interface to the Geant4 toolkit that we have developed to simulate accelerator beamlines, is being extended with a graphical user interface to quickly and efficiently model experimental equipment and its shielding in experimental halls. The program is flexible, user friendly, and requires no programming by users, so that even complex systems can be simulated quickly. This improved user interface is of much wider application than just the shielding simulations that are the focus of this project. As an initial application, G4beamline is being extended to provide the simulations that are needed to determine the radiation sources for the proposed experiments at Jefferson Laboratory so that shielding issues can be evaluated. Since the program already has the capabilities needed to simulate the transport of all known particles, including scattering, attenuation, interactions, and decays, the extension involves implementing a user-friendly graphical user inter

How good can our beamlines be?

Energy Technology Data Exchange (ETDEWEB)

Liebschner, Dorothee; Dauter, Miroslawa; Rosenbaum, Gerold, E-mail: rosenbaum@anl.gov; Dauter, Zbigniew, E-mail: rosenbaum@anl.gov [Argonne National Laboratory, Argonne, IL 60439 (United States)

2012-10-01

A repetitive measurement of the same diffraction image allows to judge the performance of a data collection facility. The accuracy of X-ray diffraction data depends on the properties of the crystalline sample and on the performance of the data-collection facility (synchrotron beamline elements, goniostat, detector etc.). However, it is difficult to evaluate the level of performance of the experimental setup from the quality of data sets collected in rotation mode, as various crystal properties such as mosaicity, non-uniformity and radiation damage affect the measured intensities. A multiple-image experiment, in which several analogous diffraction frames are recorded consecutively at the same crystal orientation, allows minimization of the influence of the sample properties. A series of 100 diffraction images of a thaumatin crystal were measured on the SBC beamline 19BM at the APS (Argonne National Laboratory). The obtained data were analyzed in the context of the performance of the data-collection facility. An objective way to estimate the uncertainties of individual reflections was achieved by analyzing the behavior of reflection intensities in the series of analogous diffraction images. The multiple-image experiment is found to be a simple and adequate method to decompose the random errors from the systematic errors in the data, which helps in judging the performance of a data-collection facility. In particular, displaying the intensity as a function of the frame number allows evaluation of the stability of the beam, the beamline elements and the detector with minimal influence of the crystal properties. Such an experiment permits evaluation of the highest possible data quality potentially achievable at the particular beamline.

Simulating the Beam-line at CERN's ISOLDE Experiment

CERN Document Server

McGrath, Casey

2013-01-01

Maximizing the optical matching along portions of the ISOLDE beam-line and automating this procedure will make it easier for scientists to determine what the strengths of the electrical elds of each beam-line element should be in order to reduce particle loss. Simulations are run using a program called MAD-X, however, certain issues were discovered that hindered an immediate success of the simulations. Specifically, the transfer matrices for electrostatic components like the switchyards, kickers, and electric quadrupoles were missing from the original coding. The primary aim of this project was to design these components using AutoCAD and then extract the transfer matrices using SIMION. Future work will then implement these transfer matrices into the MAD-X code to make the simulations of the beam-line more accurate.

Design of a High-Throughput Biological Crystallography Beamline for Superconducting Wiggler

International Nuclear Information System (INIS)

Tseng, P.C.; Chang, C.H.; Fung, H.S.; Ma, C.I.; Huang, L.J.; Jean, Y.C.; Song, Y.F.; Huang, Y.S.; Tsang, K.L.; Chen, C.T.

2004-01-01

We are constructing a high-throughput biological crystallography beamline BL13B, which utilizes the radiation generated from a 3.2 Tesla, 32-pole superconducting multipole wiggler, for multi-wavelength anomalous diffraction (MAD), single-wavelength anomalous diffraction (SAD), and other related experiments. This beamline is a standard double crystal monochromator (DCM) x-ray beamline equipped with a collimating mirror (CM) and a focusing mirror (FM). Both the CM and FM are one meter long and made of Si substrate, and the CM is side-cooled by water. Based on detailed thermal analysis, liquid nitrogen (LN2) cooling for both crystals of the DCM has been adopted to optimize the energy resolution and photon beam throughput. This beamline will deliver, through a 100 μm diameter pinhole, photon flux of greater than 1011 photons/sec in the energy range from 6.5 keV to 19 keV, which is comparable to existing protein crystallography beamlines from bending magnet source at high energy storage rings

Australian synchrotron radiation science

International Nuclear Information System (INIS)

White, J.W.

1996-01-01

Full text: The Australian Synchrotron Radiation Program, ASRP, has been set up as a major national research facility to provide facilities for scientists and technologists in physics, chemistry, biology and materials science who need access to synchrotron radiation. Australia has a strong tradition in crystallography and structure determination covering small molecule crystallography, biological and protein crystallography, diffraction science and materials science and several strong groups are working in x-ray optics, soft x-ray and vacuum ultra-violet physics. A number of groups whose primary interest is in the structure and dynamics of surfaces, catalysts, polymer and surfactant science and colloid science are hoping to use scattering methods and, if experience in Europe, Japan and USA can be taken as a guide, many of these groups will need third generation synchrotron access. To provide for this growing community, the Australian National Beamline at the Photon Factory, Tsukuba, Japan, has been established since 1990 through a generous collaboration with Japanese colleagues, the beamline equipment being largely produced in Australia. This will be supplemented in 1997 with access to the world's most powerful synchrotron x-ray source at the Advanced Photon Source, Argonne National Laboratory, USA. Some recent experiments in surface science using neutrons as well as x-rays from the Australian National Beamline will be used to illustrate one of the challenges that synchrotron x-rays may meet

Safety upgrades for NSRRC beamlines in the upcoming top-up operation

International Nuclear Information System (INIS)

Liu, Joseph C.; Sheu, R.-J.; Wang, J.-P.; Chen, C.-R.; Chang, F.-D.; Kao, S.-P.

2006-01-01

The original beamline shielding of NSRRC was designed for the decay mode operation that safety shutter was closed during injection. The proposed top-up operation that opens safety shutter during top-up injection will introduce additional beam loss scenarios and radiation sources, especially when the injection efficiency needs to be improved. Careful comparison was made to differentiate the radiation doses into beamlines for both operation modes. Detailed evaluation was made to identify the possible inadequacies of the old beamline shielding and safety control procedures. Remedy actions and safety upgrades for each individual beamline were issued to ensure that dose limit of 2 mSv/yr for users can be fulfilled when running top-up operation

Science Theatre as dissemination of environmental awareness

DEFF Research Database (Denmark)

Chemi, Tatiana; Kastberg, Peter

2015-01-01

hides behind this label? Is this concept at all new? The purpose of this article is threefold: 1) to describe Science Theatre in terms of typology with specific focus on environmental subjects, 2) to address Science Theatre as a borderline meeting place (agora or arena) between science and theatre 3......A community project with the intention of developing specific communication on environmental issues for children age 3-7 allies with a theatre artist and storyteller. The result is a meeting between science and theatre. Theatre, with its borderline praxis between entertainment and reflection...... offered a precious opportunity to deliver difficult scientific or social issues within the environmental mindset to such youngsters, an opportunity well exploited and well received. But what makes Science Theatre an obvious choice in order to communicate natural sciences or environmental issues? What...

Medical research and multidisciplinary applications with laser-accelerated beams: the ELIMED netwotk at ELI-Beamlines

Science.gov (United States)

Tramontana, A.; Anzalone, A.; Candiano, G.; Carpinelli, M.; Cirrone, G. A. P.; Cuttone, G.; Korn, G.; Licciardello, T.; Maggiore, M.; Manti, L.; Margarone, D.; Musumarra, A.; Perozziello, F.; Pisciotta, P.; Raffaele, L.; Romano, F.; Romano, F. P.; Stancampiano, C.; Schillaci, F.; Scuderi, V.; Torrisi, L.; Tudisco, S.

2014-04-01

Laser accelerated proton beams represent nowadays an attractive alternative to the conventional ones and they have been proposed in different research fields. In particular, the interest has been focused in the possibility of replacing conventional accelerating machines with laser-based accelerators in order to develop a new concept of hadrontherapy facilities, which could result more compact and less expensive. With this background the ELIMED (ELIMED: ELI-Beamlines MEDical applications) research project has been launched by LNS-INFN researchers (Laboratori Nazionali del Sud-Istituto Nazionale di Fisica Nucleare, Catania, IT) and ASCR-FZU researchers (Academy of Sciences of the Czech Republic-Fyzikální ústar, Prague, Cz), within the pan-European ELI-Beamlines facility framework. Its main purposes are the demonstration of future applications in hadrontherapy of optically accelerated protons and the realization of a laser-accelerated ion transport beamline for multidisciplinary applications. Several challenges, starting from laser-target interaction and beam transport development, up to dosimetric and radiobiological issues, need to be overcome in order to reach the final goals. The design and the realization of a preliminary beam handling and dosimetric system and of an advanced spectrometer for high energy (multi-MeV) laser-accelerated ion beams will be shortly presented in this work.

Wavefront propagation through the beamline designed for seeding the DESY XUV FEL

CERN Document Server

Reininger, R; Gürtler, P; Bahrdt, J

2001-01-01

A beamline designed to reduce the spectral bandwidth of the DESY XUV FEL is described. The beamline is intended to cover the wavelength range from 6.4 to 50 nm with three variable line spacing gratings. A plane mirror in front of the grating is used to maintain constant magnification in the dispersion direction. The electric field generated by the first undulator at three wavelengths, 6.4, 13, and 25 nm, is propagated through the beamline. The results show that the beamline has the resolution and imaging properties required for seeding the second undulator at these wavelengths.

An overview of what is required and when for developing a beamline at the ALS

International Nuclear Information System (INIS)

Hussain, Z.

1995-08-01

This report discusses these topics: reviews required for developing a beamline at the ALS; work items and documentation required for the beamline design review; information to be communicated to the ALS staff before the beamline readiness review; work items and documentation required for the beamline readiness review; contacts for information, technical questions, and sources of additional information; and checklist of what is required and when for developing a beamline

The microspectroscopy beamline for the Australian synchrotron project

International Nuclear Information System (INIS)

Boldeman, J.W.; Ryan, C.; Cohen, D.D.

2005-01-01

A new multi-million dollar synchrotron facility is currently being built in Clayton, Victoria. This is a 3GeV electron machine, it will be a world class machine and contain state of the art beamline facilities for both Australian and overseas scientists. It is due for completion in mid-2007. This specialised beamline will provide sub-micron spatial resolution with the highest flux possible. It will combine 2D mapping with micro X-ray fluorescence (μ-XRF), micro X-ray absorption near edge spectroscopy (μ-XANES) and micro X-ray absorption fine structure spectroscopy (μ-XAFS) for elemental and chemical analysis to solve scientific problems that can only be understood using X-ray beams with sub-micron resolutions. In this paper we describe some key beamline components and give details about their performance specifications. 7 refs., 4 figs.; 1 tab

High-brightness beamline for x-ray spectroscopy at the ALS

Energy Technology Data Exchange (ETDEWEB)

Perera, R.C.C.; Jones, G. [Ernest Orlando Lawrence Berkeley National Lab., CA (United States); Lindle, D.W. [Univ. of Nevada, Las Vegas, NV (United States)

1997-04-01

Beamline 9.3.1 at the Advanced Light Source (ALS) is a windowless beamline, covering the 1-6 keV photon-energy range, designed to achieve the goals of high energy resolution, high flux, and high brightness at the sample. When completed later this year, it will be the first ALS monochromatic hard x-ray beamline, and its brightness will be an order of magnitude higher than presently available in this energy range. In addition, it will provide flux and resolution comparable to any other beamline now in operation. To achieve these goals, two technical improvements, relative to existing x-ray beamlines, were incorporated. First, a somewhat novel optical design for x-rays, in which matched toroidal mirrors are positioned before and after the double-crystal monochromator, was adopted. This configuration allows for high resolution by passing a collimated beam through the monochromator, and for high brightness by focusing the ALS source on the sample with unit magnification. Second, a new {open_quotes}Cowan type{close_quotes} double-crystal monochromator based on the design used at NSLS beamline X-24A was developed. The measured mechanical precision of this new monochromator shows significant improvement over existing designs, without using positional feedback available with piezoelectric devices. Such precision is essential because of the high brightness of the radiation and the long distance (12 m) from the source (sample) to the collimating (focusing) mirror. This combination of features will provide a bright, high resolution, and stable x-ray beam for use in the x-ray spectroscopy program at the ALS.

New features at the LURE-D22 SAXS beamline

International Nuclear Information System (INIS)

Lesieur, P.; Lombardo, D.; Beauchet, L; Creof, C.; Decamps, T.; Dubuisson, J.M.; Perilhous, G.

1999-01-01

The D22 beamline of the DCI storage ring at LURE is dedicated to the study of structural properties in the field of material science by way of the small-angle X ray scattering (SAXS) technique. The D2 bending magnet of the DCI ring offers a stable source of limited brilliance but long decay time (200 hours) so that the beam can be used up to 110 hours after an injection of the positrons in the ring. Two different settings respectively dedicated to metallurgy and soft matter share the beam time. The latter which is considered here mainly deals with ill condensed matter: non ideal solutions of amphiphiles or polymers, liquid crystals, colloids, gels, xerogels, aerogels. (author)

MxCuBE: a synchrotron beamline control environment customized for macromolecular crystallography experiments

International Nuclear Information System (INIS)

Gabadinho, José; Beteva, Antonia; Guijarro, Matias; Rey-Bakaikoa, Vicente; Spruce, Darren

2010-01-01

MxCuBE is a beamline control environment optimized for the needs of macromolecular crystallography. This paper describes the design of the software and the features that MxCuBE currently provides. The design and features of a beamline control software system for macromolecular crystallography (MX) experiments developed at the European Synchrotron Radiation Facility (ESRF) are described. This system, MxCuBE, allows users to easily and simply interact with beamline hardware components and provides automated routines for common tasks in the operation of a synchrotron beamline dedicated to experiments in MX. Additional functionality is provided through intuitive interfaces that enable the assessment of the diffraction characteristics of samples, experiment planning, automatic data collection and the on-line collection and analysis of X-ray emission spectra. The software can be run in a tandem client-server mode that allows for remote control and relevant experimental parameters and results are automatically logged in a relational database, ISPyB. MxCuBE is modular, flexible and extensible and is currently deployed on eight macromolecular crystallography beamlines at the ESRF. Additionally, the software is installed at MAX-lab beamline I911-3 and at BESSY beamline BL14.1

Scientific knowledge and environmental policy. Why science needs values. Environmental essay

Energy Technology Data Exchange (ETDEWEB)

Carolan, M.S. [Department of Sociology, Colorado State University, Fort Collins (United States)

2006-12-15

While the term 'science' is evoked with immense frequency in the political arena, it continues to be misunderstood. Perhaps the most repeated example of this - particularly when dealing with environmental policy and regulatory issues - is when science is called upon to provide the unattainable: namely, proof. What is scientific knowledge and, more importantly, what is it capable of providing us? These questions must be answered - by policymakers, politicians, the public, and scientists themselves - if we hope to ever resolve today's environmental controversies in a just and equitable way. This paper begins by critically examining the concepts of uncertainty and proof as they apply to science. Discussion then turns to the issue of values in science. This is to speak of the normative decisions that are made routinely in the environmental sciences (but often without them being recognized as such). To conclude, insights are gleaned from the preceding sections to help us understand how science should be utilized and conducted, particularly as it applies to environmental policy.

Science teacher’s idea about environmental concepts in science learning as the first step of science teacher training

Science.gov (United States)

Tapilouw, M. C.; Firman, H.; Redjeki, S.; Chandra, D. T.

2018-05-01

To refresh natural environmental concepts in science, science teacher have to attend a teacher training. In teacher training, all participant can have a good sharing and discussion with other science teacher. This study is the first step of science teacher training program held by education foundation in Bandung and attended by 20 science teacher from 18 Junior High School. The major aim of this study is gathering science teacher’s idea of environmental concepts. The core of questions used in this study are basic competencies linked with environmental concepts, environmental concepts that difficult to explain, the action to overcome difficulties and references in teaching environmental concepts. There are four major findings in this study. First finding, most environmental concepts are taught in 7th grade. Second finding, most difficult environmental concepts are found in 7th grade. Third finding, there are five actions to overcome difficulties. Fourth finding, science teacher use at least four references in mastering environmental concepts. After all, teacher training can be a solution to reduce difficulties in teaching environmental concepts.

Statistics for environmental science and management

National Research Council Canada - National Science Library

Manly, B.F.J

2009-01-01

.... Additional topics covered include environmental monitoring, impact assessment, censored data, environmental sampling, the role of statistics in environmental science, assessing site reclamation...

Performance of beamline 9.3.1 at the ALS: Flux and resolution measurements

Energy Technology Data Exchange (ETDEWEB)

Uehara, Y. [Univ. of Nevada, Las Vegas, NV (United States); Fischer, G.; Kring, J.; Perera, R.C.C. [Ernest Orlando Lawrence Berkeley National Lab., CA (United States)

1997-04-01

Beamline 9.3.1 at the ALS is a windowless beamline, covering the 1-6 keV photon-energy range. This beamline is the first monochromatic hard x-ray beamline in the ALS, and designed to achieve the goals of high energy resolution, and preservation of the high brightness from the ALS. It consists of a new {open_quotes}Cowan type{close_quotes} double-crystal monochromator and two toroidal mirrors which are positioned before and after the monochromator. The construction of the beamline was completed in December of 1995, with imperfect mirrors. In this report, the authors describe the experimental results of absolute flux measurements and x-ray absorption measurements of gases and solid samples using the present set of mirrors.

Energy-dispersive X-ray diffraction beamline at Indus-2 synchrotron ...

Indian Academy of Sciences (India)

An energy-dispersive X-ray diffraction beamline has been designed, developed and commissioned at BL-11 bending magnet port of the Indian synchrotron source, Indus-2. The performance of this beamline has been benchmarked by measuring diffraction patterns from various elemental metals and standard inorganic ...

Conceptual design of an undulator system for a dedicated bio-imaging beamline at the European X-ray FEL

Energy Technology Data Exchange (ETDEWEB)

Geloni, Gianluca [European XFEL GmbH, Hamburg (Germany); Kocharyan, Vitali; Saldin, Evgeni [Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)

2012-05-15

We describe a future possible upgrade of the European XFEL consisting in the construction of an undulator beamline dedicated to life science experiments. The availability of free undulator tunnels at the European XFEL facility offers a unique opportunity to build a beamline optimized for coherent diffraction imaging of complex molecules, like proteins and other biologically interesting structures. Crucial parameters for such bio-imaging beamline are photon energy range, peak power, and pulse duration. Key component of the setup is the undulator source. The peak power is maximized in the photon energy range between 3 keV and 13 keV by the use of a very efficient combination of self-seeding, fresh bunch and tapered undulator techniques. The unique combination of ultra-high peak power of 1 TW in the entire energy range, and ultrashort pulse duration tunable from 2 fs to 10 fs, would allow for single shot coherent imaging of protein molecules with size larger than 10 nm. Also, the new beamline would enable imaging of large biological structures in the water window, between 0.3 keV and 0.4 keV. In order to make use of standardized components, at present we favor the use of SASE3-type undulator segments. The number segments, 40, is determined by the tapered length for the design output power of 1 TW. The present plan assumes the use of a nominal electron bunch with charge of 0.1 nC. Experiments will be performed without interference with the other three undulator beamlines. Therefore, the total amount of scheduled beam time per year is expected to be up to 4000 hours.

Moly99 Production Facility: Report on Beamline Components, Requirements, Costs

Energy Technology Data Exchange (ETDEWEB)

Bishofberger, Kip A. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

2015-12-23

In FY14 we completed the design of the beam line for the linear accelerator production design concept. This design included a set of three bending magnets, quadrupole focusing magnets, and octopoles to flatten the beam on target. This design was generic and applicable to multiple different accelerators if necessary. In FY15 we built on that work to create specifications for the individual beam optic elements, including power supply requirements. This report captures the specification of beam line components with initial cost estimates for the NorthStar production facility.This report is organized as follows: The motivation of the beamline design is introduced briefly, along with renderings of the design. After that, a specific list is provided, which accounts for each beamline component, including part numbers and costs, to construct the beamline. After that, this report details the important sections of the beamline and individual components. A final summary and list of follow-on activities completes this report.

Understanding leadership in the environmental sciences

Directory of Open Access Journals (Sweden)

Louisa S. Evans

2015-03-01

Full Text Available Leadership is often assumed, intuitively, to be an important driver of sustainable development. To understand how leadership is conceptualized and analyzed in the environmental sciences and to discover what this research says about leadership outcomes, we conducted a review of environmental leadership research over the last 10 years. We found that much of the environmental leadership literature focuses on a few key individuals and desirable leadership competencies. The literature also reports that leadership is one of the most important of a number of factors contributing to effective environmental governance. Only a subset of the literature highlights interacting sources of leadership, disaggregates leadership outcomes, or evaluates leadership processes in detail. We argue that the literature on environmental leadership is highly normative. Leadership is typically depicted as an unequivocal good, and its importance is often asserted rather than tested. We trace how leadership studies in the management sciences are evolving and argue that, taking into account the state of the art in environmental leadership research, more critical approaches to leadership research in environmental science can be developed.

Center for Environmental Health Sciences

Data.gov (United States)

Federal Laboratory Consortium — The primary research objective of the Center for Environmental Health Sciences (CEHS) at the University of Montana is to advance knowledge of environmental impacts...

The ELSA laser beamline for electron polarization measurements via Compton backscattering

Energy Technology Data Exchange (ETDEWEB)

Switka, Michael; Hinterkeuser, Florian; Koop, Rebecca; Hillert, Wolfgang [Electron Stretcher Facility ELSA, Physics Institute of Bonn University (Germany)

2016-07-01

The Electron Stretcher Facility ELSA provides a spin polarized electron beam with energies of 0.5 - 3.2 GeV for double polarization hadron physics experiments. As of 2015, the laser beamline of the polarimeter based on Compton backscattering restarted operation. It consists of a cw disk laser with design total beam power of 40 W and features two polarized 515 nm photon beams colliding head-on with the stored electron beam in ELSA. The polarization measurement is based on the vertical profile asymmetry of the back-scattered photons, which is dependent on the polarization degree of the stored electron beam. After recent laser repairs, beamline and detector modifications, the properties of the beamline have been determined and first measurements of the electron polarization degree were conducted. The beamline performance and first measurements are presented.

I18--the microfocus spectroscopy beamline at the Diamond Light Source.

Science.gov (United States)

Mosselmans, J Frederick W; Quinn, Paul D; Dent, Andrew J; Cavill, Stuart A; Moreno, Sofia Diaz; Peach, Andrew; Leicester, Peter J; Keylock, Stephen J; Gregory, Simon R; Atkinson, Kirk D; Rosell, Josep Roque

2009-11-01

The design and performance of the microfocus spectroscopy beamline at the Diamond Light Source are described. The beamline is based on a 27 mm-period undulator to give an operable energy range between 2 and 20.7 keV, enabling it to cover the K-edges of the elements from P to Mo and the L(3)-edges from Sr to Pu. Micro-X-ray fluorescence, micro-EXAFS and micro-X-ray diffraction have all been achieved on the beamline with a spot size of approximately 3 microm. The principal optical elements of the beamline consist of a toroid mirror, a liquid-nitrogen-cooled double-crystal monochromator and a pair of bimorph Kirkpatrick-Baez mirrors. The performance of the optics is compared with theoretical values and a few of the early experimental results are summarized.

Water Pollution, Environmental Science Curriculum Guide Supplement.

Science.gov (United States)

McKenna, Harold J.

This curriculum guide is a 40-day unit plan on water pollution developed, in part, from the National Science Foundation Environmental Science Institutes' Ninth Grade Environmental Science Curriculum Guide. This unit contains teacher lesson plans, suggested teacher and student modules, case studies, and activities to be developed by teachers…

TARA beamline and injection system

International Nuclear Information System (INIS)

Post, R.S.; Brindza, P.; Coleman, J.W.; Torti, R.P.; Blackfield, D.T.; Goodrich, P.

1983-01-01

The TARA beamline for neutral beam injection will permit one to three sources to fire into each plug (60 degree or optional 90 degree injection with respect to the TARA axis) or into each anchor (90 degree injection only). The sources, pre-aimed on their mounting plate at the NB test stand, may be fired into neutralizer ducts or optionally through a magnesium curtain, and the unneutralized fraction is dumped by the TARA fringing field onto a receiver plate. The beamline is housed in a cylindrical tank with the beam axis along the tank diameter at the midplane. The tank will be sorption pumped using LN + T/sub I/ or N/sub B/ and/or e-beam gettering. The beam burial tank contains sed arrays and a thin foil dump which reaches sufficiently high temperatures during the shot to boil out gas between shots

EMA beamline at SIRIUS: extreme condition X-ray methods of analysis

International Nuclear Information System (INIS)

Souza Neto, Narcizo

2016-01-01

Full text: The EMA beamline (Extreme condition X-ray Methods of Analysis) is one of the hard x-ray undulator beamlines within the first phase of the new synchrotron source in Brazil (Sirius project). This beamline is thought to make a difference where a high brilliance (high flux of up to 2 x 10 14 photons/sec with beam size down to 0.5 x 0.5 μm 2 ) is essential, which is the case for extreme pressures that require small focus and time-resolved that require high photon flux. With that in mind we propose the beamline to have two experimental hutches to cover most of the extreme condition techniques today employed at synchrotron laboratories worldwide. These two stations are thought to provide the general infrastructure for magnets and lasers experiments, which may evolve as new scientific problems appear. In addition to the hutches, support laboratories will be strongly linked and supportive to the experiments at the beamline, covering high pressure instrumentations using diamond anvil cells and pump-and-probe requirements for ultrafast and high power lasers. Along these lines, we will describe the following techniques covered at this beamline: magnetic spectroscopy (XMCD) and scattering (XRMS) under high pressure and very low temperature in order to fully probe both ferromagnetic and antiferromagnetic materials and the dependence with pressure; extreme pressure and temperature XRD and XAS experiments using very small diamond culet anvils and high power lasers. (author)

EMA beamline at SIRIUS: extreme condition X-ray methods of analysis

Energy Technology Data Exchange (ETDEWEB)

Souza Neto, Narcizo, E-mail: narcizo.souza@lnls.br [Centro Nacional de Pesquisa em Energia e Materiais (CNPEM), Campinas, SP (Brazil)

2016-07-01

Full text: The EMA beamline (Extreme condition X-ray Methods of Analysis) is one of the hard x-ray undulator beamlines within the first phase of the new synchrotron source in Brazil (Sirius project). This beamline is thought to make a difference where a high brilliance (high flux of up to 2 x 10{sup 14} photons/sec with beam size down to 0.5 x 0.5 μm{sup 2}) is essential, which is the case for extreme pressures that require small focus and time-resolved that require high photon flux. With that in mind we propose the beamline to have two experimental hutches to cover most of the extreme condition techniques today employed at synchrotron laboratories worldwide. These two stations are thought to provide the general infrastructure for magnets and lasers experiments, which may evolve as new scientific problems appear. In addition to the hutches, support laboratories will be strongly linked and supportive to the experiments at the beamline, covering high pressure instrumentations using diamond anvil cells and pump-and-probe requirements for ultrafast and high power lasers. Along these lines, we will describe the following techniques covered at this beamline: magnetic spectroscopy (XMCD) and scattering (XRMS) under high pressure and very low temperature in order to fully probe both ferromagnetic and antiferromagnetic materials and the dependence with pressure; extreme pressure and temperature XRD and XAS experiments using very small diamond culet anvils and high power lasers. (author)

Environmental Studies and Environmental Science at GCE '0' and 'A' Level.

Science.gov (United States)

Gayford, Christopher G.

1983-01-01

Reports on environmental studies/science at General Certificate of Examination (GCE) ordinary ("0") and advanced ("A") levels. Questionnaires were used to survey teachers (focusing on their professional training and why they teach environmental studies/science courses) and to determine the relationship between environmental…

Activity and Action: Bridging Environmental Sciences and Environmental Education

Science.gov (United States)

Tal, Tali; Abramovitch, Anat

2013-01-01

The main goal of this study was to examine the Environmental Workshop unit taught to Environmental Sciences majors in the high schools in Israel and learn if, and in what ways, this unit could become a model for environmental education throughout the high school curriculum. We studied the special characteristics of the Environmental Workshop (EW)…

Long-pulse beamlines for the mirror fusion test facility

International Nuclear Information System (INIS)

Stone, R.R.; Goldner, A.I.; Poulsen, P.

1984-01-01

We have recently obtained test results indicating that a beam of pure full-energy deuterium particles can be delivered to the plasma targets in MFTF-B. We used a close-coupled separator magnet with the ion source to separate the impurities from the full-energy deuterium particles. Our completed studies show that the usual iron-core sweep magnet and shielding used in neutral beamlines can be eliminated and the gas flow out of the beamline decreased. This design also reduces beam losses. We will use smooth-bore OFHC tube arrays brazed to manifolds for the active heat transfer surfaces. Tests indicate that both burnout and life requirements are met by this design. In this paper, we present test results and discuss the MFTF-B long-pulse beamline configuration

CHARACTERIZATION OF THE NEW NSLS INFARED MICROSPECTROSCOPY BEAMLINE U10B.

Energy Technology Data Exchange (ETDEWEB)

CARR,G.L.

1999-07-19

The first of several new infrared beamlines, built on a modified bending magnet port of the NSLS VUV ring, is now operational for mid-infrared microspectroscopy. The port simultaneously delivers 40 mrad by 40 mrad to two separate beamlines and spectrometer endstations designated U10A and U10B. The latter is equipped with a scanning infrared microspectrometer. The combination of this instrument and high brightness synchrotron radiation makes diffraction-limited microspectroscopy practical. This paper describes the beamline's performance and presents quantitative information on the diffraction-limited resolution.

Characterization of the new NSLS infrared microspectroscopy beamline U10B

Energy Technology Data Exchange (ETDEWEB)

Carr, G.L.

1999-07-19

The first of several new infrared beamlines, built on a modified bending magnet port of the NSLS VUV ring, is now operational for mid-infrared microspectroscopy. The port simultaneously delivers 40 mrad by 40 mrad to two separate beamlines and spectrometer endstations designated U10A and U10B. The latter is equipped with a scanning infrared microspectrometer. The combination of this instrument and high brightness synchrotron radiation makes diffraction-limited microspectroscopy practical. This paper describes the beamline's performance and presents quantitative information on the diffraction-limited resolution.

Status of the Nanoscopium Scanning Hard X-ray Nanoprobe Beamline of Synchrotron Soleil

Science.gov (United States)

Somogyi, A.; Kewish, C. M.; Ribbens, M.; Moreno, T.; Polack, F.; Baranton, G.; Desjardins, K.; Samama, J. P.

2013-10-01

The Nanoscopium 155 m-long scanning hard X-ray nanoprobe beamline of Synchrotron Soleil (St Aubin, France) is dedicated to quantitative multi-modal 2D/3D imaging. The beamline aims to reach down to 30 nm spatial resolution in the 5-20 keV energy range. Two experimental stations working in consecutive operation mode will be dedicated to coherent diffractive imaging and scanning X-ray nanoprobe techniques. The beamline is in the construction phase, the first user experiments are expected in 2014. The main characteristics of the beamline and an overview of its status are given in this paper.

Status of the Nanoscopium Scanning Hard X-ray Nanoprobe Beamline of Synchrotron Soleil

International Nuclear Information System (INIS)

Somogyi, A; Kewish, C M; Ribbens, M; Moreno, T; Polack, F; Baranton, G; Desjardins, K; Samama, J P

2013-01-01

The Nanoscopium 155 m-long scanning hard X-ray nanoprobe beamline of Synchrotron Soleil (St Aubin, France) is dedicated to quantitative multi-modal 2D/3D imaging. The beamline aims to reach down to 30 nm spatial resolution in the 5–20 keV energy range. Two experimental stations working in consecutive operation mode will be dedicated to coherent diffractive imaging and scanning X-ray nanoprobe techniques. The beamline is in the construction phase, the first user experiments are expected in 2014. The main characteristics of the beamline and an overview of its status are given in this paper

Environmental science and technology

Energy Technology Data Exchange (ETDEWEB)

Manahan, S.E. [Univ. of Missouri, Columbia, MO (United States)

1998-12-31

This complete survey of modern environmental science covers the four traditional spheres of the environment: water, air, earth, and life, and introduces a fifth sphere -- the anthrosphere -- which the author defines as the sphere of human activities, especially technology, that affect the earth. The book discusses how technology can be used in a manner that minimizes environmental disruption.

APS beamline standard components handbook, Version 1.3

International Nuclear Information System (INIS)

Hahn, U.; Shu, D.; Kuzay, T.M.

1993-02-01

This Handbook in its current version (1.3) contains descriptions, specifications, and preliminary engineering design drawings for many of the standard components. The design status and schedules have been provided wherever possible. In the near future, the APS plans to update engineering drawings of identified standard beamline components and complete the Handbook. The completed version of this Handbook will become available to both the CATs and potential vendors. Use of standard components should result in major cost reductions for CATs in the areas of beamline design and construction

Development environmental attitude of prospective science teachers

International Nuclear Information System (INIS)

Iqbal, H.M.

2000-01-01

Since the last three decades or so, we have witnessed the growing concern of human beings, all over the world, to adopt measures to conserve and preserve environment of the planet earth, because the same has been threatened by human activity and by way of our unparalleled intervention in the otherwise balanced environment. This awareness and concern has emerged as a need of incorporating environmental Issues into the normal curricula, so that we can educate the young generation to become informed decision-makers of the future. UNESCO and UNEP have advocated (since the last three decades) to teach environmentalised science to students. In Pakistan, there have been attempts to change curricula in accordance with the need of the time. Teachers need new kinds of skills, attitudes and commitment to teach science in an environmentalised fashion. This article discusses the impact of a semester-course on change in environmental attitudes of prospective science-teachers. A pre-test, post-test method was used to ascertain any change in environmental attitude of prospective science-teachers, after studying the environmental education course. It has been shown that there was a change in the environmental attitude of science-teachers as a result of the one-semester course, but the change or the level of attitude was not substantial or satisfactory. There seems to be a need of adopting a comprehensive approach to environmental education, and introducing teaching of environmental concepts at a very early age. (author)

75 FR 65365 - National Institute of Environmental Health Sciences;

Science.gov (United States)

2010-10-22

... Environmental Health Sciences; Notice of Closed Meetings Pursuant to section 10(d) of the Federal Advisory... clearly unwarranted invasion of personal privacy. Name of Committee: Environmental Health Sciences Review... evaluate grant applications. Place: Nat. Inst. of Environmental Health Sciences, Building 101, Rodbell...

SUNY beamline facilities at the National Synchrotron Light Source (Final Report)

International Nuclear Information System (INIS)

Coppens, Philip

2003-01-01

The DOE sponsored SUNY synchrotron project has involved close cooperation among faculty at several SUNY campuses. A large number of students and postdoctoral associates have participated in its operation which was centered at the X3 beamline of the National Synchrotron Light Source at Brookhaven National Laboratory. Four stations with capabilities for Small Angle Scattering, Single Crystal and Powder and Surface diffraction and EXAFS were designed and operated with capability to perform experiments at very low as well as elevated temperatures and under high vacuum. A large amount of cutting-edge science was performed at the facility, which in addition provided excellent training for students and postdoctoral scientists in the field

SUNY beamline facilities at the National Synchrotron Light Source (Final Report)

Energy Technology Data Exchange (ETDEWEB)

Coppens, Philip

2003-06-22

The DOE sponsored SUNY synchrotron project has involved close cooperation among faculty at several SUNY campuses. A large number of students and postdoctoral associates have participated in its operation which was centered at the X3 beamline of the National Synchrotron Light Source at Brookhaven National Laboratory. Four stations with capabilities for Small Angle Scattering, Single Crystal and Powder and Surface diffraction and EXAFS were designed and operated with capability to perform experiments at very low as well as elevated temperatures and under high vacuum. A large amount of cutting-edge science was performed at the facility, which in addition provided excellent training for students and postdoctoral scientists in the field.

ADLIB: A simple database framework for beamline codes

International Nuclear Information System (INIS)

Mottershead, C.T.

1993-01-01

There are many well developed codes available for beamline design and analysis. A significant fraction of each of these codes is devoted to processing its own unique input language for describing the problem. None of these large, complex, and powerful codes does everything. Adding a new bit of specialized physics can be a difficult task whose successful completion makes the code even larger and more complex. This paper describes an attempt to move in the opposite direction, toward a family of small, simple, single purpose physics and utility modules, linked by an open, portable, public domain database framework. These small specialized physics codes begin with the beamline parameters already loaded in the database, and accessible via the handful of subroutines that constitute ADLIB. Such codes are easier to write, and inherently organized in a manner suitable for incorporation in model based control system algorithms. Examples include programs for analyzing beamline misalignment sensitivities, for simulating and fitting beam steering data, and for translating among MARYLIE, TRANSPORT, and TRACE3D formats

Environmental Science and Technology

Energy Technology Data Exchange (ETDEWEB)

NONE

2011-07-01

The Program on Environmental Science and Technology comprehends environmental chemistry (water, soil and atmospheric chemistry), clean technologies (desulfurization of diesel and oil, biodegradable polymers and structural modification of polymers, recycling, pyrolysis of dangerous chemicals by molten salt technology), nanotechnology (magnetic nanoparticles, dendrimers, nano biomarkers, catalyzers) and chemical characterization of nuclear fuel and nuclear fuel cycle waste (chemical and isotopic characterization)

Indus-I beamlines for condensed matter physics

International Nuclear Information System (INIS)

Nandedkar, R.V.

2001-01-01

Full text: A 450 MeV electron storage ring Indus-I is now operational. This storage ring gives synchrotron radiation in soft x-ray vacuum ultra violet (VUV) and to visible region. On this storage ring six beamlines are now being set up for atomic and molecular spectroscopy experiments, solid state spectroscopy experiments and soft and VUV reflectivity experiments. In this talk, present status of beamlines which condense matter physicists will be interested in will be given along with some commissioning experiments. These beam lines are based on a toroidal grating monochromators in the range 40 - 1000 A with moderate energy resolution. Some experiments which can be conducted using these beam lines will be discussed

Microspectroscopy At Beamline 73 MAX-lab

International Nuclear Information System (INIS)

Engdahl, Anders

2010-01-01

Presentation of some projects at the infrared microspectroscopy experimental station at beamline 73 MAX-lab. Among the subjects are found identification of organic residues in fossil material and examination of the chemistry in an old oak wood wreck.

Citizen science can improve conservation science, natural resource management, and environmental protection

Science.gov (United States)

McKinley, Duncan C.; Miller-Rushing, Abe J.; Ballard, Heidi L.; Bonney, Rick; Brown, Hutch; Cook-Patton, Susan; Evans, Daniel M.; French, Rebecca A.; Parrish, Julia; Phillips, Tina B.; Ryan, Sean F.; Shanley, Lea A.; Shirk, Jennifer L.; Stepenuck, Kristine F.; Weltzin, Jake F.; Wiggins, Andrea; Boyle, Owen D.; Briggs, Russell D.; Chapin, Stuart F.; Hewitt, David A.; Preuss, Peter W.; Soukup, Michael A.

2017-01-01

Citizen science has advanced science for hundreds of years, contributed to many peer-reviewed articles, and informed land management decisions and policies across the United States. Over the last 10 years, citizen science has grown immensely in the United States and many other countries. Here, we show how citizen science is a powerful tool for tackling many of the challenges faced in the field of conservation biology. We describe the two interwoven paths by which citizen science can improve conservation efforts, natural resource management, and environmental protection. The first path includes building scientific knowledge, while the other path involves informing policy and encouraging public action. We explore how citizen science is currently used and describe the investments needed to create a citizen science program. We find that:Citizen science already contributes substantially to many domains of science, including conservation, natural resource, and environmental science. Citizen science informs natural resource management, environmental protection, and policymaking and fosters public input and engagement.Many types of projects can benefit from citizen science, but one must be careful to match the needs for science and public involvement with the right type of citizen science project and the right method of public participation.Citizen science is a rigorous process of scientific discovery, indistinguishable from conventional science apart from the participation of volunteers. When properly designed, carried out, and evaluated, citizen science can provide sound science, efficiently generate high-quality data, and help solve problems.

Upgrade of the Proton West secondary beamline

International Nuclear Information System (INIS)

Spiegel, L.

1989-01-01

As originally designed and operated, protons entering PW6 were steered by a series of EPB dipoles into a single interaction length beryllium target, some 43 feet from the enclosure wall. Ensuing secondary beams, either p + /π + or p - /π - , were collected by a string of quadrupoles following the target, steered westward, away from the Proton Center line, through PW6 and PW7, and ultimately focussed on experiment production targets located within the large PW8 hall. Around the Spring of 1988 it was decided to upgrade the existing Proton West secondary beamline to allow for transport of a primary proton beam, anticipated to be either 800 or 900 GeV/c, through PW8. This upgrade project, which is now nearing completion, was largely motivated by the then recent approval of E-771, a hadronic beauty production experiment located in PW8. E-771 represents the third in a series of experiments for the large-acceptance dimuon spectrometer presently located at the end of the Proton West beamline. This Technical Memo is a summary of the upgrade --- an explanation of the underlying strategy and a documentation of the final locations of the secondary beamline elements. 6 refs., 2 figs., 2 tabs

Soft x-ray spectroscopy undulator beamline at the Advanced Photon Source

Energy Technology Data Exchange (ETDEWEB)

Randall, K.J.; Xu, Z.; Moore, J.F.; Gluskin, E.

1997-09-01

Construction of the high-resolution soft x ray spectroscopy undulator beamline, 2ID-C, at the Advanced Photon Source (APS) has been completed. The beamline, one of two soft x ray beamlines at the APS, will cover the photon energy range from 500 to 3,000 eV, with a maximum resolving power between 7,000 and 14,000. The optical design is based on a spherical grating monochromator (SGM) giving both high resolution and high flux throughput. Photon flux is calculated to be approximately 10{sup 12}--10{sup 13} photons per second with a beam size of approximately 1 x 1 mm{sup 2} at the sample.

eBooking of beam-time over internet for beamlines of Indus synchrotron radiation sources

International Nuclear Information System (INIS)

Jain, Alok; Verma, Rajesh; Rajan, Alpana; Modi, M.H.; Rawat, Anil

2015-01-01

Users from various research labs and academic institutes carry out experiments on beamlines of two Synchrotron Radiation Sources Indus-1 and Indus-2 available at RRCAT, Indore. To carry out experimental work on beamlines of both synchrotron radiation sources, beam-time is booked over Internet by the users of beamlines using user portal designed, developed and deployed over Internet. This portal has made the process of beamtime booking fast, hassle free and paperless as manual booking of beam-time for carrying out experiment on a particular beamline is cumbersome. The portal facilitates in-charge of Indus-1 and Indus-2 beamlines to keep track of users' records, work progress and other activities linked to experiments carried on beamlines. It is important to keep record and provide statistics about the usage of the beam lines from time-to-time. The user portal for e-booking of beam-time has been developed in-house using open source software development tools. Multi-step activities of users and beamline administrators are workflow based with seamless flow of information across various modules and fully authenticated using role based mechanism for different roles of software usage. The software is in regular use since November 2013 and has helped beamline in- charges in efficiently managing various activities related to user registration, booking of beam-time, booking of Guest House, Generation of Security permits, User feedback etc. Design concept, role based authentication mechanism and features provided by the web portal are discussed in detail in this paper. (author)

The DOE/NREL Environmental Science Program

International Nuclear Information System (INIS)

Douglas R. Lawson; Michael Gurevich

2001-01-01

This paper summarizes the several of the studies in the Environmental Science Program being sponsored by DOE's Office of Heavy Vehicle Technologies (OHVT) through the National Renewable Energy Laboratory (NREL). The goal of the Environmental Science Program is to understand atmospheric impacts and potential health effects that may be caused by the use of petroleum-based fuels and alternative transportation fuels from mobile sources. The Program is regulatory-driven, and focuses on ozone, airborne particles, visibility and regional haze, air toxics, and health effects of air pollutants. Each project in the Program is designed to address policy-relevant objectives. Current projects in the Environmental Science Program have four areas of focus: improving technology for emissions measurements; vehicle emissions measurements; emission inventory development/improvement; ambient impacts, including health effects

The DOE/NREL Environmental Science Program

Energy Technology Data Exchange (ETDEWEB)

Douglas R. Lawson; Michael Gurevich

2001-05-14

This paper summarizes the several of the studies in the Environmental Science Program being sponsored by DOE's Office of Heavy Vehicle Technologies (OHVT) through the National Renewable Energy Laboratory (NREL). The goal of the Environmental Science Program is to understand atmospheric impacts and potential health effects that may be caused by the use of petroleum-based fuels and alternative transportation fuels from mobile sources. The Program is regulatory-driven, and focuses on ozone, airborne particles, visibility and regional haze, air toxics, and health effects of air pollutants. Each project in the Program is designed to address policy-relevant objectives. Current projects in the Environmental Science Program have four areas of focus: improving technology for emissions measurements; vehicle emissions measurements; emission inventory development/improvement; ambient impacts, including health effects.

Construction Status of the Beamline for Radio-Isotope Production in the Korea Multi-purpose Accelerator Complex

Energy Technology Data Exchange (ETDEWEB)

Chung, B. H.; Yoon, S. P.; Seol, K. T.; Kim, H. S.; Kwon, H. J.; Cho, Y. S. [Korea Atomic Energy Research Institute, Daejeon (Korea, Republic of)

2015-10-15

The 100-MeV beamline consist of 5 target room, a TR 103 as one of these is operating beamline, and a TR 101 as the other beamline is under construction as shown in Fig. 1. The TR 101 as beamline target room will be used for the high value-added medical isotope production and increased utilization of the proton accelerator. The optical system of the beamline consisted of dipole and quadrupole, and it included beam position monitor (BPM) and current transformer (CT) for beam diagnostics. The beamline was inserted into the carbon block and the aluminum collimator, the end of pipe as beam window was used for the aluminum to reduce the radioactive of materials. The target transfer equipment is being installed for RI production. The RI Beamline was aligned using the laser tracker, and vacuum leak was not detected by the helium leak detector. This facility is expected to the high value-added medical isotope production and increased utilization of the proton accelerator.

Trichromatic concept at the SPring-8 RIKEN beamline I

International Nuclear Information System (INIS)

Yamamoto, Masaki; Kumasaka, Takashi; Ueki, Tatzuo

1998-01-01

At the SPring-8, RIKEN beamline I has been designed and developed for structural biology research by the Institute of Physical and Chemical Research (RIKEN). RIKEN beamline I consists of two experimental stations, protein crystallography (PX) and small-angle X-ray scattering (SAXS). Both experiments can be carried out simultaneously, with dichromatic synchrotron radiation emitted from two coaxial undulators with vertical polarization. The branched beams are generated by a transparent diamond crystal. With synchrotron radiation, the multi-wavelength anomalous diffraction (MAD) method, which gives phases from a single anomalous scatterer, has been developed. Anomalous scattering contributes a small portion of diffraction intensity so that the accuracy of intensity data is definitely important. The PX branch of RIKEN beamline I has been designed based on a 'trichromatic concept' to optimize for the MAD data collection. This concept is that three kinds of intensity data sets with three different wavelengths are taken quasi-simultaneously for the single protein crystal without changing any setting by 'trichromator'. The main feature of this concept is to minimize systematic errors in the measurements of anomalous diffraction for the MAD method. The construction of RIKEN beamline I had been progressed satisfactorily until June 1997. The initial commissioning successfully provided the three different monochromatized undulator beams were successfully observed on the phosphor screen, which located at the near end of the trichromator. (author)

High Power Primary Slits For The ESRF Beamlines

International Nuclear Information System (INIS)

Marion, Philippe; Zhang Lin

2004-01-01

At the ESRF, in order to face the increased heatload on the beamlines, new Primary slits have been developed. The main features of the new slits are: beam size = 0 to 4mm; accuracy = 10μm; acceptable power density: 600 W/mm2; acceptable total power: 7kW; total length: 740mm. The adopted design offers a wide water cooled area; the shapes of the heated parts have been optimized to reduce the local thermal stresses. The maximum calculated temperature and stress are 353C and 606MPa. Six of these new slits are now in operation on ESRF Beamlines

Kinematic mounting systems for NSLS beamlines and experiments

International Nuclear Information System (INIS)

Oversluizen, T.; Stoeber, W.; Johnson, E.D.

1991-01-01

Methods for kinematically mounting equipment are well established, but applications at synchrotron radiation facilities are subject to constraints not always encountered in more traditional laboratory settings. Independent position adjustment of beamline components can have significant benefits in terms of minimizing time spent aligning, and maximizing time spent acquiring data. In this paper, we use examples taken from beamlines at the NSLS to demonstrate approaches for optimization of the reproducibility, stability, excursion, and set-up time for various situations. From our experience, we extract general principles which we hope will be useful for workers at other synchrotron radiation facilities. 7 refs., 4 figs

Ronchi test for characterization of X-ray nanofocusing optics and beamlines.

Science.gov (United States)

Uhlén, Fredrik; Rahomäki, Jussi; Nilsson, Daniel; Seiboth, Frank; Sanz, Claude; Wagner, Ulrich; Rau, Christoph; Schroer, Christian G; Vogt, Ulrich

2014-09-01

A Ronchi interferometer for hard X-rays is reported in order to characterize the performance of the nanofocusing optics as well as the beamline stability. Characteristic interference fringes yield qualitative data on present aberrations in the optics. Moreover, the visibility of the fringes on the detector gives information on the degree of spatial coherence in the beamline. This enables the possibility to detect sources of instabilities in the beamline like vibrations of components or temperature drift. Examples are shown for two different nanofocusing hard X-ray optics: a compound refractive lens and a zone plate.

The initial scientific program at the NSLS infrared beamline

International Nuclear Information System (INIS)

Williams, G.P.

1989-01-01

Unique extraction optics (90 x 90 mrads) at the NSLS U4IR line offer high brightness beams at up to mm wavelengths with a ∼1ns pulse structure. Radiation from this port has now been carefully characterized and agrees well with calculations, making it 100--1000 times brighter than conventional sources in the middle and far infrared regions. Using rapid scan Michelson interferometers with liquid He cooled bolometer detectors we have been able for the first time to measure molecule substrate vibrations in surface science. We have also made the first measurements of the transmission of a film of the high Tc material YBaCuO in the BCS gap region. These initial experiments have demonstrated the advantages of the superior signal to noise available from this infrared beamline. 19 refs., 6 figs

Uncovering Students' Environmental Identity: An Exploration of Activities in an Environmental Science Course

Science.gov (United States)

Blatt, Erica

2014-01-01

This study at a public high school in the Northeastern United States explores how students' environmental identities are affected by various activities in an Environmental Science course. Data was collected as part of an ethnographic study involving an Environmental Science teacher and her tenth-twelfth grade students. The results focus on…

Synchrotron Environmental Science-I Workshop Report

International Nuclear Information System (INIS)

1999-01-01

Attendees of the Synchrotrons Environmental Science 1 (SES-1) workshop represented a broad spectrum of environmental science research areas and expertise in all of the current synchrotrons techniques (X-ray scattering and diffraction, X-ray absorption spectroscopy, and two- and three-dimensional X-ray imaging). These individuals came together to discuss current measurement obstacles in environmental research and, more specifically, ways to overcome such obstacles by applying synchrotrons radiation techniques. Significant obstacles in measurement affect virtually all of the research issues described. Attendees identified synchrotrons approaches of potential value in their research. A number of the environmental research studies discussed are currently being addressed with some success by synchrotron-based approaches. Nevertheless, improvements in low-Z measurement capabilities are needed to facilitate the use of synchrotrons radiation methodologies in environmental research

Synchrotron Environmental Science-I Workshop Report.

Energy Technology Data Exchange (ETDEWEB)

NONE

1999-07-08

Attendees of the Synchrotrons Environmental Science 1 (SES-1) workshop represented a broad spectrum of environmental science research areas and expertise in all of the current synchrotrons techniques (X-ray scattering and diffraction, X-ray absorption spectroscopy, and two- and three-dimensional X-ray imaging). These individuals came together to discuss current measurement obstacles in environmental research and, more specifically, ways to overcome such obstacles by applying synchrotrons radiation techniques. Significant obstacles in measurement affect virtually all of the research issues described. Attendees identified synchrotrons approaches of potential value in their research. A number of the environmental research studies discussed are currently being addressed with some success by synchrotron-based approaches. Nevertheless, improvements in low-Z measurement capabilities are needed to facilitate the use of synchrotrons radiation methodologies in environmental research.

Current schemes for National Synchrotron Light Source UV beamlines

International Nuclear Information System (INIS)

Williams, G.P.; Howells, M.R.; McKinney, W.R.

1979-01-01

We describe in some detail four beamlines proposed for the National Synchrotron Light Source uv ring at Brookhaven National Laboratory. Three grazing-incidence instruments, one of the plane grating Mijake type and two with toroidal gratings at grazing angles of 2-1/2 0 and 15 0 are described. Two normal incidence instruments, one using the source as entrance slit and accepting 75 milliradians horizontally are also discussed. In each case we have estimated the output fluxes expected from such beamlines

The precautionary principle in environmental science.

Science.gov (United States)

Kriebel, D; Tickner, J; Epstein, P; Lemons, J; Levins, R; Loechler, E L; Quinn, M; Rudel, R; Schettler, T; Stoto, M

2001-01-01

Environmental scientists play a key role in society's responses to environmental problems, and many of the studies they perform are intended ultimately to affect policy. The precautionary principle, proposed as a new guideline in environmental decision making, has four central components: taking preventive action in the face of uncertainty; shifting the burden of proof to the proponents of an activity; exploring a wide range of alternatives to possibly harmful actions; and increasing public participation in decision making. In this paper we examine the implications of the precautionary principle for environmental scientists, whose work often involves studying highly complex, poorly understood systems, while at the same time facing conflicting pressures from those who seek to balance economic growth and environmental protection. In this complicated and contested terrain, it is useful to examine the methodologies of science and to consider ways that, without compromising integrity and objectivity, research can be more or less helpful to those who would act with precaution. We argue that a shift to more precautionary policies creates opportunities and challenges for scientists to think differently about the ways they conduct studies and communicate results. There is a complicated feedback relation between the discoveries of science and the setting of policy. While maintaining their objectivity and focus on understanding the world, environmental scientists should be aware of the policy uses of their work and of their social responsibility to do science that protects human health and the environment. The precautionary principle highlights this tight, challenging linkage between science and policy. PMID:11673114

NSLS [National Synchrotron Light Source] X-19A beamline performance for x-ray absorption measurements

International Nuclear Information System (INIS)

Yang, C.Y.; Penner-Hahn, J.E.; Stefan, P.M.

1989-01-01

Characterization of the X-19A beamline at the National Synchrotron Light Source (NSLS) is described. The beamline is designed for high resolution x-ray absorption spectroscopy over a wide energy range. All of the beamline optical components are compatible with ultrahigh vacuum (UHV) operation. This permits measurements to be made in a window-less mode, thereby facilitating lower energy (<4 KeV) studies. To upgrade the beamline performance, several possible improvements in instrumentation and practice are discussed to increase photon statistics with an optimum energy resolution, while decreasing the harmonic contamination and noise level. A special effort has been made to improve the stability and UHV compatibility of the monochromator system. Initial x-ray absorption results demonstrate the capabilities of this beamline for x-ray absorption studies of low Z elements (e.g. S) in highly dilute systems. The future use of this beamline for carrying out various x-ray absorption experiments is presented. 10 refs., 4 figs

BNL ATF II beamlines design

Energy Technology Data Exchange (ETDEWEB)

Fedurin, M. [Brookhaven National Lab. (BNL), Upton, NY (United States); Jing, Y. [Brookhaven National Lab. (BNL), Upton, NY (United States); Stratakis, D. [Brookhaven National Lab. (BNL), Upton, NY (United States); Swinson, C. [Brookhaven National Lab. (BNL), Upton, NY (United States)

2015-05-03

The Brookhaven National Laboratory. Accelerator Test Facility (BNL ATF) is currently undergoing a major upgrade (ATF-II). Together with a new location and much improved facilities, the ATF will see an upgrade in its major capabilities: electron beam energy and quality and CO₂ laser power. The electron beam energy will be increased in stages, first to 100-150 MeV followed by a further increase to 500 MeV. Combined with the planned increase in CO₂ laser power (from 1-100 TW), the ATF-II will be a powerful tool for Advanced Accelerator research. A high-brightness electron beam, produced by a photocathode gun, will be accelerated and optionally delivered to multiple beamlines. Besides the energy range (up to a possible 500 MeV in the final stage) the electron beam can be tailored to each experiment with options such as: small transverse beam size (<10 um), short bunch length (<100 fsec) and, combined short and small bunch options. This report gives a detailed overview of the ATFII capabilities and beamlines configuration.

A science data gateway for environmental management: A SCIENCE DATA GATEWAY FOR ENVIRONMENTAL MANAGEMENT

Energy Technology Data Exchange (ETDEWEB)

Agarwal, Deborah A. [Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Faybishenko, Boris [Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Freedman, Vicky L. [Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Krishnan, Harinarayan [Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Kushner, Gary [Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Lansing, Carina [Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Porter, Ellen [Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Romosan, Alexandru [Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Shoshani, Arie [Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Wainwright, Haruko [Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Weidmer, Arthur [Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Wu, Kesheng [Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)

2015-10-12

Science data gateways are effective in providing complex science data collections to the world-wide user communities. In this paper we describe a gateway for the Advanced Simulation Capability for Environmental Management (ASCEM) framework. Built on top of established web service technologies, the ASCEM data gateway is specifically designed for environmental modeling applications. Its key distinguishing features include: (1) handling of complex spatiotemporal data, (2) offering a variety of selective data access mechanisms, (3) providing state of the art plotting and visualization of spatiotemporal data records, and (4) integrating seamlessly with a distributed workflow system using a RESTful interface. ASCEM project scientists have been using this data gateway since 2011.

Physical optics simulations with PHASE for SwissFEL beamlines

Energy Technology Data Exchange (ETDEWEB)

Flechsig, U.; Follath, R.; Reiche, S. [Paul Scherrer Institut, Swiss Light Source, 5232 Villigen PSI (Switzerland); Bahrdt, J. [Helmholtz Zentrum Berlin (Germany)

2016-07-27

PHASE is a software tool for physical optics simulation based on the stationary phase approximation method. The code is under continuous development since about 20 years and has been used for instance for fundamental studies and ray tracing of various beamlines at the Swiss Light Source. Along with the planning for SwissFEL a new hard X-ray free electron laser under construction, new features have been added to permit practical performance predictions including diffraction effects which emerge with the fully coherent source. We present the application of the package on the example of the ARAMIS 1 beamline at SwissFEL. The X-ray pulse calculated with GENESIS and given as an electrical field distribution has been propagated through the beamline to the sample position. We demonstrate the new features of PHASE like the treatment of measured figure errors, apertures and coatings of the mirrors and the application of Fourier optics propagators for free space propagation.

CERN’s 2016 Beamline for Schools competition starts on 17 November

CERN Document Server

2015-01-01

Spread the word: CERN is offering high-school students from around the world the chance to create and perform a scientific experiment on a CERN accelerator beamline. What better way to learn about physics?    (Video: Noemi Caraban​/CERN ) Now in its third year, the Beamline for Schools competition is open to teams of at least five students aged 16 and with at least one adult supervisor or “coach”. Students can find out about the beamline and facilities via http://cern.ch/bl4s, then think of a simple, creative experiment. They can register their team from 17 November to start receiving e-mail updates. They then submit a written proposal and a short video by 31 March 2016. The winners will be announced in June and will come to CERN, preferably in September 2016. Previous winners have tested webcams and classroom-grown crystals at the beamline, others have studied how particles decay and investigated high-energy gamma rays. All participants will receive...

Experimental stations at I13 beamline at Diamond Light Source

Science.gov (United States)

Pešić, Z. D.; De Fanis, A.; Wagner, U.; Rau, C.

2013-03-01

The I13 beamline of Diamond Light Source has been operational since December 2011. The beamline encompass two fully independent branches devoted to coherent imaging experiments (coherent x-ray diffraction, coherent diffraction imaging and ptychography) and x-ray imaging (in-line phase contrast imaging, tomography and full-field microscopy). This paper gives an overview of the current status of experimental stations on both branches and outlines planned developments.

Experimental stations at I13 beamline at Diamond Light Source

International Nuclear Information System (INIS)

Pešić, Z D; Fanis, A De; Wagner, U; Rau, C

2013-01-01

The I13 beamline of Diamond Light Source has been operational since December 2011. The beamline encompass two fully independent branches devoted to coherent imaging experiments (coherent x-ray diffraction, coherent diffraction imaging and ptychography) and x-ray imaging (in-line phase contrast imaging, tomography and full-field microscopy). This paper gives an overview of the current status of experimental stations on both branches and outlines planned developments.

Neutron imaging options at the BOA beamline at Paul Scherrer Institut

International Nuclear Information System (INIS)

Morgano, M.; Peetermans, S.; Lehmann, E.H.; Panzner, T.; Filges, U.

2014-01-01

The BOA beamline at the Swiss spallation neutron source SINQ at Paul Scherrer Institut is a flexible instrument used mainly for testing novel techniques and devices for neutron scattering and optics, but, due to the large and relatively homogeneous field of view, it can be successfully used for experiments in the field of neutron imaging. The beamline allows also for the exploitation of advanced imaging concepts such as polarized neutron imaging and diffractive neutron imaging. In this paper we present the characterization of the BOA beamline in the light of its neutron imaging capabilities. We show also the different techniques that can be employed there as user-friendly plugins for non-standard neutron imaging experiments

GDA and EPICS: working in unison for science driven data acquisition and control at Diamond light source

International Nuclear Information System (INIS)

Gibbons, E.P.; Heron, M.T.; Rees, N.P.

2012-01-01

Diamond Light Source has recently received funding for an additional 10 photon beamlines, bringing the total to 32 beamlines and around 40 end-stations. These all use EPICS (Experimental Physics and Industrial Control System) for the control of the underlying instrumentation associated with photon delivery, the experiment and most of the data acquisition hardware. For the scientific users Diamond has developed the Generic Data Acquisition (GDA) application framework to provide a consistent science interface across all beamlines. While each application is customized to the science of its beamline, all applications are built from the framework and predominantly interface to the underlying instrumentation through the EPICS abstraction. We will describe the complete system, illustrate how it can be configured for a specific beamline application, and how other synchrotrons are, and can, adapt these tools for their needs. (authors)

Archives: African Journal of Environmental Science and Technology

African Journals Online (AJOL)

Items 1 - 50 of 117 ... Archives: African Journal of Environmental Science and Technology. Journal Home > Archives: African Journal of Environmental Science and Technology. Log in or Register to get access to full text downloads.

Performance of a novel VUV bending magnet beamline

CERN Document Server

Song, Y F; Hsieh, T F; Huang, L R; Chung, S C; Cheng, N F; Hsiung, G Y; Wang, D J; Chen, C T; Tsang, K L

2001-01-01

A novel high resolution, high flux bending magnet beamline with an energy range from 5 to 40 eV has been constructed at SRRC. This Dragon-like beamline, which horizontally collects 50 mrad of synchrotron radiation from a bending magnet source, uses four cylindrical gratings with an included angle of 140 deg. and a movable curved exit slit. The average photon flux with an energy resolving power of 1000 is about 2x10 sup 1 sup 2 photons/s, which is among the highest of all existing VUV bending magnet beamlines. An energy resolving power of 24,000 at 6.8 eV has been obtained from the Schumann-Runge bands (B sup 3 limit construction operator in a limit construction/sum L: summation operator operator End lower limit of a limit construction u lower limit End limit End sup - /leftarrow/gets A: =leftward arrow X sup 3 limit construction operator in a limit construction/sum L: summation operator operator End lower limit of a limit construction g lower limit End limit End sup -) absorption spectra of O sub 2 gas. A pho...

Pulsed beam tests at the SANAEM RFQ beamline

Science.gov (United States)

Turemen, G.; Akgun, Y.; Alacakir, A.; Kilic, I.; Yasatekin, B.; Ergenlik, E.; Ogur, S.; Sunar, E.; Yildiz, V.; Ahiska, F.; Cicek, E.; Unel, G.

2017-07-01

A proton beamline consisting of an inductively coupled plasma (ICP) source, two solenoid magnets, two steerer magnets and a radio frequency quadrupole (RFQ) is developed at the Turkish Atomic Energy Authority’s (TAEA) Saraykoy Nuclear Research and Training Center (SNRTC-SANAEM) in Ankara. In Q4 of 2016, the RFQ was installed in the beamline. The high power tests of the RF power supply and the RF transmission line were done successfully. The high power RF conditioning of the RFQ was performed recently. The 13.56 MHz ICP source was tested in two different conditions, CW and pulsed. The characterization of the proton beam was done with ACCTs, Faraday cups and a pepper-pot emittance meter. Beam transverse emittance was measured in between the two solenoids of the LEBT. The measured beam is then reconstructed at the entrance of the RFQ by using computer simulations to determine the optimum solenoid currents for acceptance matching of the beam. This paper will introduce the pulsed beam test results at the SANAEM RFQ beamline. In addition, the high power RF conditioning of the RFQ will be discussed.

New beamline dedicated to solution scattering from biological macromolecules at the ESRF

International Nuclear Information System (INIS)

Pernot, P; Theveneau, P; Giraud, T; Fernandes, R Nogueira; Nurizzo, D; Spruce, D; Surr, J; McSweeney, S; Round, A; Felisaz, F; Foedinger, L; Gobbo, A; Huet, J; Villard, C; Cipriani, F

2010-01-01

The new bio-SAXS beamline (ID14-3 at the ESRF, Grenoble, France) is dedicated exclusively to small-angle scattering experiments of biological macromolecules in solution and has been in user operation since November 2008. Originally a protein crystallography beamline, ID14-3 was refurbished, still as a part of the ESRF Structural Biology group, with the main aim to provide a facility with 'quick and easy' access to satisfy rapidly growing demands from crystallographers, biochemists and structural biologists. The beamline allows manual and automatic sample loading/unloading, data collection, processing (conversion of a 2D image to a normalized 1D X-ray scattering profile) and analysis. The users obtain on-line standard data concerning the size (radius of gyration, maximum dimension and volume) and molecular weight of samples which allow on-the fly ab-inito shape reconstruction in order to provide feedback enabling the data collection strategies to be optimized. Automation of sample loading is incorporated on the beamline using a device constructed in collaboration between the EMBL (Grenoble and Hamburg outstations) and the ESRF. Semi/automated data analysis is implemented following the model of the SAXS facility at X33, EMBL Hamburg. This paper describes the bio-SAXS beamline and set-up characteristics together with the examples of user data obtained.

Geography and environmental science

OpenAIRE

Milinčić, Miroljub; Souliotis, Lily; Mihajlović, Ljiljana; Požar, Tea

2014-01-01

Geography is one of the oldest academic disciplines with a strong holistic approach in conceptualizing the interaction between nature and society, i.e. animate and inanimate parts of the environment. Over time, geography has been increasing and improving its conceptual and terminological abilities for studying and understanding complex relationships among environmental systems. For this reason, geography has advanced from a well-known science about nature and society into a relevant science a...

Laser-induced damage threshold tests of ultrafast multilayer dielectric coatings in various environmental conditions relevant for operation of ELI beamlines laser systems

Science.gov (United States)

Ďurák, Michal; Velpula, Praveen Kumar; Kramer, Daniel; Cupal, Josef; Medřík, Tomáš; Hřebíček, Jan; Golasowski, Jiří; Peceli, Davorin; Kozlová, Michaela; Rus, Bedřich

2017-01-01

Increasing the laser-induced damage resistance of optical components is one of the major challenges in the development of Peta-watt (PW) class laser systems. The extreme light infrastructure (ELI) beamlines project will provide ultrafast laser systems with peak powers up to 10 PW available every minute and PW class beams at 10 Hz complemented by a 5-TW, 1-kHz beamline. Sustainable performance of PW class laser systems relies on the durability of the employed optical components. As part of an effort to evaluate the damage resistance of components utilized in ELI beamlines systems, damage thresholds of several optical multilayer dielectric coatings were measured with different laser parameters and in different environments. Three coatings were tested with 10 Hz and 1 kHz pulse repetition rates, and the effect of a cleaning treatment on their damage resistance was examined. To explore the damage threshold behavior at different vacuum levels, one coating was subject to tests at various residual gas pressures. No change of damage threshold in a high vacuum with respect to ambient pressure was recorded. The effect of the cleaning treatment was found to be inconsistent, suggesting that development of the optimal cleaning treatment for a given coating requires consideration of its specific properties.

Circular dichroism beamline B23 at the Diamond Light Source.

Science.gov (United States)

Hussain, Rohanah; Jávorfi, Tamás; Siligardi, Giuliano

2012-01-01

Synchrotron radiation circular dichroism (SRCD) is a well established technique in structural biology. The first UV-VIS beamline, dedicated to circular dichroism, at Diamond Light Source Ltd, a third-generation synchrotron facility in south Oxfordshire, UK, has recently become operational and it is now available for the user community. Herein the main characteristics of the B23 SRCD beamline, the ancillary facilities available for users, and some of the recent advances achieved are summarized.

Infrared Spectroscopy Beamline Based on a Tabletop Storage Ring

OpenAIRE

Haque, Md. Monirul; Moon, Ahsa; Yamada, Hironari

2012-01-01

An optical beamline dedicated to the infrared (IR) spectroscopy has been constructed at MIRRORCLE, a tabletop storage ring. The beamline has been designed for the use of infrared synchrotron radiation (IRSR) emitted from a bending magnet of 156 mm bending radius with the acceptance angle of 355(H) × 138(V) mrad to obtain high flux. The IR emission is forced by an exactly circular optics, named photon storage ring (PhSR), placed around the electron orbit and is collected by a “magic mirror” as...

A compact cost-effective beamline for a PET Cyclotron

International Nuclear Information System (INIS)

Dehnel, M.P.; Jackle, P.; Roeder, M.; Stewart, T.; Theroux, J.; Brasile, J.P.; Sirot, P.; Buckley, K.R.; Bedue, M.

2007-01-01

Most commercial PET Cyclotrons have targets mounted on or near the main cyclotron vacuum chamber. There is often little or no system capability for centering or focusing the extracted beam on target to achieve maximum production. This paper describes the ion-optics, design and development of a compact cost-effective beamline comprised of low activation and radiation resistant materials. The beamline, complete with suitable diagnostic devices, permits the extracted proton beam to be centered (X-Y steering magnet), and focused (quadrupole doublet) on target eliminating unnecessary beamspill and ensuring high production

Beamline for low-energy transport of highly charged ions at HITRAP

International Nuclear Information System (INIS)

Andelkovic, Z.; Herfurth, F.; Kotovskiy, N.; König, K.; Maaß, B.; Murböck, T.; Neidherr, D.; Schmidt, S.; Steinmann, J.; Vogel, M.; Vorobjev, G.

2015-01-01

A beamline for transport of highly charged ions with energies as low as a few keV/charge has been constructed and commissioned at GSI. Complementary to the existing infrastructure of the HITRAP facility for deceleration of highly charged ions from the GSI accelerator, the new beamline connects the HITRAP ion decelerator and an EBIT with the associated experimental setups. Therefore, the facility can now transport the decelerated heavy highly charged ions to the experiments or supply them offline with medium-heavy highly charged ions from the EBIT, both at energies as low as a few keV/charge. Here we present the design of the 20 m long beamline with the corresponding beam instrumentation, as well as its performance in terms of energy and transport efficiency

MX1: a bending-magnet crystallography beamline serving both chemical and macromolecular crystallography communities at the Australian Synchrotron

International Nuclear Information System (INIS)

Cowieson, Nathan Philip; Aragao, David; Clift, Mark; Ericsson, Daniel J.; Gee, Christine; Harrop, Stephen J.; Mudie, Nathan; Panjikar, Santosh; Price, Jason R.; Riboldi-Tunnicliffe, Alan; Williamson, Rachel; Caradoc-Davies, Tom

2015-01-01

The macromolecular crystallography beamline MX1 at the Australian Synchrotron is described. MX1 is a bending-magnet crystallography beamline at the 3 GeV Australian Synchrotron. The beamline delivers hard X-rays in the energy range from 8 to 18 keV to a focal spot at the sample position of 120 µm FWHM. The beamline endstation and ancillary equipment facilitate local and remote access for both chemical and biological macromolecular crystallography. Here, the design of the beamline and endstation are discussed. The beamline has enjoyed a full user program for the last seven years and scientific highlights from the user program are also presented

A comparison of three different ray trace programs for x-ray and infrared synchrotron beamline designs

International Nuclear Information System (INIS)

Irick, S.C.; Jung, C.R.

1997-07-01

There are a number of ray trace programs currently used for the design of synchrotron beamlines. While several of these programs have been written and used mostly within the programmer''s institution, many have also been available to the general public. This paper discusses three such programs. One is a commercial product oriented for the general optical designer (not specifically for synchrotron beamlines). One is designed for synchrotron beamlines and is free with restricted availability. Finally, one is designed for synchrotron beamlines and is used primarily in one institution. The wealth of information from general optical materials and components catalogs is readily available in the commercial program for general optical designs. This makes the design of an infrared beamline easier from the standpoint of component selection. However, this program is not easily configured for synchrotron beamline designs, particularly for a bending magnet source. The synchrotron ray trace programs offer a variety of sources, but generally are not as easy to use from the standpoint of the user interface. This paper shows ray traces of the same beamline Optikwerks, SHADOW, and RAY, and compares the results

Design and simulation of the nuSTORM pion beamline

Energy Technology Data Exchange (ETDEWEB)

Liu, A., E-mail: aoliu@fnal.gov; Neuffer, D.; Bross, A.

2015-11-21

The nuSTORM (neutrinos from STORed Muons) proposal presents a detailed design for a neutrino facility based on a muon storage ring, with muon decay in the production straight section of the ring providing well defined neutrino beams. The facility includes a primary high-energy proton beam line, a target station with pion production and collection, and a pion beamline for pion transportation and injection into a muon decay ring. The nuSTORM design uses “stochastic injection”, in which pions are directed by a chicane, referred to as the Orbit Combination Section (OCS), into the production straight section of the storage ring. Pions that decay within that straight section provide muons within the circulating acceptance of the ring. The design enables injection without kickers or a separate pion decay transport line. The beam line that the pions traverse before being extracted from the decay ring is referred to as the pion beamline. This paper describes the design and simulation of the pion beamline, and includes full beam dynamics simulations of the system.

Critical materialism: science, technology, and environmental sustainability.

Science.gov (United States)

York, Richard; Clark, Brett

2010-01-01

There are widely divergent views on how science and technology are connected to environmental problems. A view commonly held among natural scientists and policy makers is that environmental problems are primarily technical problems that can be solved via the development and implementation of technological innovations. This technologically optimistic view tends to ignore power relationships in society and the political-economic order that drives environmental degradation. An opposed view, common among postmodernist and poststructuralist scholars, is that the emergence of the scientific worldview is one of the fundamental causes of human oppression. This postmodernist view rejects scientific epistemology and often is associated with an anti-realist stance, which ultimately serves to deny the reality of environmental problems, thus (unintentionally) abetting right-wing efforts to scuttle environmental protection. We argue that both the technologically optimistic and the postmodernist views are misguided, and both undermine our ability to address environmental crises. We advocate the adoption of a critical materialist stance, which recognizes the importance of natural science for helping us to understand the world while also recognizing the social embeddedness of the scientific establishment and the need to challenge the manipulation of science by the elite.

Journal of Applied Sciences and Environmental Management - Vol ...

African Journals Online (AJOL)

Journal of Applied Sciences and Environmental Management. ... AFRICAN JOURNALS ONLINE (AJOL) · Journals · Advanced Search · USING ... Journal of Applied Sciences and Environmental Management - Vol 22, No 5 (2018) .... Growth Performance of Five Bean (Phaseolus spp) Varieties as Influenced by Organic ...

Workshop on cooling of x-ray monochromators on high power beamlines

International Nuclear Information System (INIS)

Matsushita, T.; Ishikawa, T.

1989-03-01

This report is a Workshop on Cooling of X-ray Monochromators on High Power Beamlines held on August 31, 1988 at the Photon Factory during the Third International Conference on Synchrotron Radiation Instrumentation (SRI88). On high power beamlines, especially on insertion device beamlines, heating of crystal monochromators is becoming a serious problem: Researchers observe that the intensity of the X-ray beam on the sample is not proportional to the source intensity because of thermal distortion of the monochromator crystal. This problem will be even more serious on beamlines for the next generation X-ray rings. In the very tight program of the SRI88 conference, only 2 speakers were able to give invited talks closely related to this problem in the session of OPTICAL COMPONENTS FOR HIGH POWER BEAMLINES on Wednesday morning of August 31, 1988. We held this workshop in the afternoon of the same day with the intention of offering further opportunities to exchange information on efforts underway at various laboratories and to discuss ideas how to solve this problem. We also intended that the workshop would be a 'follow-up' to the X-ray optics workshop held at ESRF, Grenoble in September 1987, where the importance of crystal cooling was strongly pointed out. There were 32 participants from 7 countries. 12 people represented their experiences and ideas for reducing thermal distortion of crystal monochromators. Following those presentations, there were discussions on collaborations for solving this important problem. The attendees agreed that exchange of information should be continued by holding such meetings at reasonable intervals. (J.P.N.)

Commissioning and first results of scanning type EXAFS beamline (BL-09) at INDUS-2 synchrotron source

Energy Technology Data Exchange (ETDEWEB)

Poswal, A. K., E-mail: poswalashwini@gmail.com; Agrawal, A., E-mail: poswalashwini@gmail.com; Yadav, A. K., E-mail: poswalashwini@gmail.com; Nayak, C., E-mail: poswalashwini@gmail.com; Basu, S., E-mail: poswalashwini@gmail.com; Bhattachryya, D.; Jha, S. N.; Sahoo, N. K. [Atomic and Molecular Physics Division, Bhabha Atomic Research Centre, Mumbai -400085 (India); Kane, S. R.; Garg, C. K. [Indus Synchrotrons Utilization Division, Raja Ramanna Centre for Advanced Technology, Indore- 452013 (India)

2014-04-24

An Energy Scanning X-ray Absorption Fine Structure spectroscopy beamline has recently been installed and commissioned at BL-09 bending magnet port of INDUS-2 synchrotron source, Indore. The beamline uses an UHV compatible fixed exit double crystal monochromator (DCM) with two Si (111) crystals. Two grazing incidence cylindrical mirrors are also used in this beamline; the pre-mirror is used as a collimating mirror while the post mirror is used for vertical focusing and higher harmonic rejection. In this beamline it is possible to carry out EXAFS measurements both in transmission and fluorescence mode on various types of samples, using Ionization chamber detectors and solid state drift detector respectively. In this paper, results from first experiments of the Energy Scanning EXAFS beamline are presented.

Correlated single-crystal electronic absorption spectroscopy and X-ray crystallography at NSLS beamline X26-C

International Nuclear Information System (INIS)

Orville, A.M.; Buono, R.; Cowan, M.; Heroux, A.; Shea-McCarthy, G.; Schneider, D.K.; Skinner, J.M.; Skinner, M.J.; Stoner-Ma, D.; Sweet, R.M.

2011-01-01

The research philosophy and new capabilities installed at NSLS beamline X26-C to support electronic absorption and Raman spectroscopies coupled with X-ray diffraction are reviewed. This beamline is dedicated full time to multidisciplinary studies with goals that include revealing the relationship between the electronic and atomic structures in macromolecules. The beamline instrumentation has been fully integrated such that optical absorption spectra and X-ray diffraction images are interlaced. Therefore, optical changes induced by X-ray exposure can be correlated with X-ray diffraction data collection. The installation of Raman spectroscopy into the beamline is also briefly reviewed. Data are now routinely generated almost simultaneously from three complementary types of experiments from the same sample. The beamline is available now to the NSLS general user population.

Journal of Applied Sciences and Environmental Management - Vol ...

African Journals Online (AJOL)

Journal of Applied Sciences and Environmental Management. ... AFRICAN JOURNALS ONLINE (AJOL) · Journals · Advanced Search · USING ... Journal of Applied Sciences and Environmental Management - Vol 22, No 4 (2018) ... Evaluating the effect of mobility speed on the performance of three handover algorithms in ...

Design and development of PEEM/ARPES beamline for Indus-2 synchrotron radiation source

International Nuclear Information System (INIS)

Goutam, U.K.; Sharma, R.K.; Jagannath; Gadkari, S.C.; Yakhmi, J.V.; Sahni, V.C.

2008-06-01

A high resolution beamline having two branches dedicated to Photo Emission Electron Microscopy (PEEM) and Angle Resolved Photo Electron Spectroscopy (ARPES) is planned for Indus-2 synchrotron radiation source. These two techniques open a wide field of new applications in materials research and have proven to be powerful tools to investigate topological, elemental, chemical state, electronic and magnetic properties of surfaces, thin films, and multilayers at high resolutions.The beamline will cover a large energy range from 10 to 4000 eV and is expected to deliver a flux of the order of ∼10 13 ph/s/0.1%B.W. with an energy resolution of ∼10 -4 . This report describes the optical design, beamline layout, effects of heat load on various components and the expected performance of the beamline. This beamline would have a collimating mirror for vertical collimation of the beam, plane grating/double crystal monochromator to make the white synchrotron beam monochromatic in entire energy range, toroidal mirror for splitting the beam as well as for intermediate focusing and a Kirkpatrick-Baez (K-B) mirror system for focusing the beam both in vertical and horizontal directions at the final sample location. Total beamline will be 36m long. Optical design has been carried out involving various computer codes such as XOP2.1, SHADOWVUI, SPECTRA 8.0 etc. Head load calculations have been performed using ANSYS, a finite element analysis code. Using this code, temperature distribution, thermal deformation and slope error values for collimating mirror, grating monochromator and double crystal monochromator using several possible cooling arrangements have been calculated and depending on these parameters, best options for different components have been selected for the beamline. Experimental stations of this beamline consist of ultra-high vacuum compatible chambers in which various probes, analyzers, detectors and other facilities are housed. A toroidal electron energy analyzer will

Plastique: A synchrotron radiation beamline for time resolved fluorescence in the frequency domain

Science.gov (United States)

De Stasio, Gelsomina; Zema, N.; Antonangeli, F.; Savoia, A.; Parasassi, T.; Rosato, N.

1991-06-01

PLASTIQUE is the only synchrotron radiation beamline in the world that performs time resolved fluorescence experiments in frequency domain. These experiments are extremely valuable sources of information on the structure and dynamics of molecules. We describe the beamline and some initial data.

Characteristics and performance of the Los Alamos VUV beamline at the NSLS

International Nuclear Information System (INIS)

Bartlett, R.J.; Trela, W.J.; Michaud, F.D.; Southworth, S.H.; Alkire, R.W.; Roy, P.; Rothe, R.; Walsh, P.J.; Shinn, N.

1988-01-01

We describe the design and performance of the Los Alamos VUV synchrotron radiation beamline, U3C, on the VUV ring of the National Synchrotron Light Source at Brookhaven National Laboratory. The beamline uses separate function optics to collect and focus the horizontally and vertically diverging beam. The monochromator is a grazing incidence Rowland circle instrument of the extended grasshopper design (ERG). A postmonochromator refocusing mirror is used to focus or collimate the diverging beam from the monochromator. The beamline control and diagnostics systems are also discussed. Particular emphasis in the design has been placed on the reduction of stray and harmonic light. Higher order light is reduced by a grazing angle mirror low pass filter installed immediately downstream from the monochromator while stray light is reduced through the use of baffles and thin film filters. Also included in the line is a differential pumping section that permits gas phase and other experiments requiring pressures in the 10 -5 to 10 -4 Torr range to be coupled to the beamline. (orig.)

Beyond Science and Technology: The need to incorporate Environmental Ethics to solve Environmental Problems

Directory of Open Access Journals (Sweden)

Fesseha Mulu

2018-01-01

Full Text Available The emergence and development of science and technology has been critical in improving the lives of mankind. It helps mankind to cope with a number of manmade and natural challenges and disasters. Science cannot totally diminish the level of human dependency on nature; but, with the existing availability of natural resources, science has increased our productivity. However, science and technology can also have its own negative impacts on the natural environment. For the purpose of increasing productivity and satisfying human needs, humans have been egoistically exploiting nature but disregarding the effects of their activities on nature. Science has also been trying its level best to mitigate the negative effects that results from mankind’s exploitation of nature. However, science alone is incapable of solving all environmental problems. This desk research employs secondary sources of data, and argues that environmental ethics should come to the fore in order to address the gap left by science with regard to resolving environmental problems that mankind faces today.

The status of the first infrared beamline at Shanghai Synchrotron Radiation Facility

International Nuclear Information System (INIS)

Ji, Te; Tong, Yajun; Zhu, Huachun; Zhang, Zengyan; Peng, Weiwei; Chen, Min; Xiao, Tiqiao; Xu, Hongjie

2015-01-01

Construction of the first infrared beamline BL01B1 at Shanghai Synchrotron Radiation Facility (SSRF) was completed at the end of 2013. The IR beamline collects both edge radiation (ER) and bending magnet radiation (BMR) from a port, providing a solid angle of 40 mrad and 20 mrad in the horizontal and vertical directions, respectively. The optical layout of the infrared beamline and the design of the extraction mirror are described in this paper. A calculation of the beam propagation has been used to optimize the parameters of the optical components. The photon flux and spatial resolution have been measured at the end-station, and the experimental results are in good agreement with the theoretical calculation

The status of the first infrared beamline at Shanghai Synchrotron Radiation Facility

Energy Technology Data Exchange (ETDEWEB)

Ji, Te; Tong, Yajun; Zhu, Huachun; Zhang, Zengyan; Peng, Weiwei; Chen, Min, E-mail: chenmin@sinap.ac.cn; Xiao, Tiqiao; Xu, Hongjie

2015-07-11

Construction of the first infrared beamline BL01B1 at Shanghai Synchrotron Radiation Facility (SSRF) was completed at the end of 2013. The IR beamline collects both edge radiation (ER) and bending magnet radiation (BMR) from a port, providing a solid angle of 40 mrad and 20 mrad in the horizontal and vertical directions, respectively. The optical layout of the infrared beamline and the design of the extraction mirror are described in this paper. A calculation of the beam propagation has been used to optimize the parameters of the optical components. The photon flux and spatial resolution have been measured at the end-station, and the experimental results are in good agreement with the theoretical calculation.

The status of the first infrared beamline at Shanghai Synchrotron Radiation Facility

Science.gov (United States)

Ji, Te; Tong, Yajun; Zhu, Huachun; Zhang, Zengyan; Peng, Weiwei; Chen, Min; Xiao, Tiqiao; Xu, Hongjie

2015-07-01

Construction of the first infrared beamline BL01B1 at Shanghai Synchrotron Radiation Facility (SSRF) was completed at the end of 2013. The IR beamline collects both edge radiation (ER) and bending magnet radiation (BMR) from a port, providing a solid angle of 40 mrad and 20 mrad in the horizontal and vertical directions, respectively. The optical layout of the infrared beamline and the design of the extraction mirror are described in this paper. A calculation of the beam propagation has been used to optimize the parameters of the optical components. The photon flux and spatial resolution have been measured at the end-station, and the experimental results are in good agreement with the theoretical calculation.

PLASTIQUE: A synchrotron radiation beamline for time resolved fluorescence in the frequency domain

International Nuclear Information System (INIS)

De Stasio, G.; Zema, N.; Antonangeli, F.; Parasassi, T.; Rosato, N.

1991-01-01

PLASTIQUE is the only synchrotron radiation beamline in the world that performs time resolved fluorescence experiments in the frequency domain. These experiments are extremely valuable sources of informations on the structure and dynamics of molecules. The beamline and some examples of initial data are described

Research report 1987-1989: Environmental Quality Laboratory and Environmental Engineering Science, W. M. Keck Laboratories

OpenAIRE

Brooks, Norman H.

1990-01-01

This research biennial report for 1987-89 covers the activities of both the Environmental Engineering Science program and the Environmental Quality Laboratory for the period October 1987-November 1989. Environmental Engineering Science is the degree-granting academic program housed in the Keck Laboratories, with associated research projects. The Environmental Quality Laboratory is a research center focusing on large scale problems of environmental quality and natural resources. All the facult...

Support for the Advanced Polymers Beamline at the National Synchrotron Light Source

Energy Technology Data Exchange (ETDEWEB)

Hsiao, Benjamin S. [State Univ. of New York (SUNY), Stonybrook, NY (United States)

2008-10-01

The primary focus of the X27C beamline is to investigate frontier polymer science and engineering problems with emphasis on real-time studies of structures, morphologies and dynamics from atomic, nanoscopic, microscopic to mesoscopic scales using simultaneous small-angle X-ray scattering (SAXS) and wide-angle X-ray diffraction (WAXD) techniques. The scientific merit of this project is as follows. Currently, many unique sample chambers for in-situ synchrotron studies, developed by the PI (B. Hsiao) and Co-PI (B. Chu), are available for general users of X27C at NSLS. These instruments include a gel/melt spinning apparatus, a continuous fiber drawing apparatus, a tensile stretching apparatus, a high pressure X-ray cell using supercritical carbon dioxide, a parallel plate strain-controlled shear stage and a dynamic rheometer for small-strain oscillatory deformation study. Based on the use of these instruments in combination with synchrotron X-rays, many new insights into the relationships between processing and structure have been obtained in recent years. The broader impact of this project is as follows. The X27C beamline is the first synchrotron facility in the United States dedicated to chemistry/materials research (with emphasis on polymers). The major benefit of this facility to the materials community is that no extensive synchrotron experience and equipment preparation are required from general users to carry out cutting-edge experiments.

Environmental health science at the U.S. Geological Survey

Science.gov (United States)

Buxton, Herbert T.; Bright, Patricia R.

2013-01-01

USGS environmental health science focuses on the environment-health interface. Research characterizes the processes that affect the interaction among the physical environment, the living environment, and people, as well as the factors that affect ecological and human exposure to disease agents and the resulting toxicologic or infectious disease. The mission of USGS in environmental health science is to contribute scientific information to environmental, natural resource, agricultural, and public-health managers, who use that information to support sound decisionmaking. Coordination with partners and stakeholders will enable USGS to focus on the highest priority environmental health issues, to make relevant, timely, and useable contributions, and to become a “partner of first choice” for environmental health science.

Science during crisis: the application of social science during major environmental crises

Science.gov (United States)

Machlis, Gary; Ludwig, Kris; Manfredo, Michael J.; Vaske, Jerry J.; Rechkemmer, Andreas; Duke, Esther

2014-01-01

Historical and contemporary experience suggests that science plays an increasingly critical role in governmental and institutional responses to major environmental crises. Recent examples include major western wildfires (2009), the Deepwater Horizon oil spill (2010), the Fukushima nuclear accident (2011), and Hurricane Sandy (2012). The application of science during such crises has several distinctive characteristics, as well as essential requirements if it is to be useful to decision makers. these include scope conditions that include coupled natural/human systems, clear statement of uncertainties and limitations, description of cascading consequences, accurate sense of place, estimates of magnitude of impacts, identification of beneficiaries and those adversely affected, clarity and conciseness, compelling visualization and presentation, capacity to speak "truth to power", and direct access to decision makers. In this chapter, we explore the role and significance of science – including all relevant disciplines and focusing attention on the social sciences – in responding to major environmental crises. We explore several important questions: How is science during crisis distinctive? What social science is most useful during crises? What distinctive characteristics are necessary for social science to make meaningful contributions to emergency response and recovery? How might the social sciences be integrated into the strategic science needed to respond to future crises? The authors, both members of the Department of the Interior's innovative Strategic Sciences Group, describe broad principles of engagement as well as specific examples drawn from history, contemporary efforts (such as during the Deepwater Horizon oil spill), and predictions of environmental crises still to be confronted.

Magnetic shielding tests for MFTF-B neutral beamlines

International Nuclear Information System (INIS)

Kerns, J.; Fabyan, J.; Wood, R.; Koger, P.

1983-01-01

A test program to determine the effectiveness of various magnetic shielding designs for MFTF-B beamlines was established at Lawrence Livermore National Laboratory (LLNL). The proposed one-tenth-scale shielding-design models were tested in a uniform field produced by a Helmholtz coil pair. A similar technique was used for the MFTF source-injector assemblies, and the model test results were confirmed during the Technology Demonstration in 1982. The results of these tests on shielding designs for MFTF-B had an impact on the beamline design for MFTF-B. The iron-core magnet and finger assembly originally proposed were replaced by a simple, air-core, race-track-coil, bending magnet. Only the source injector needs to be magnetically shielded from the fields of approximately 400 gauss

Evaluation of Students' Energy Conception in Environmental Science

Science.gov (United States)

Park, Mihwa; Johnson, Joseph A.

2016-01-01

While significant research has been conducted on students' conceptions of energy, alternative conceptions of energy have not been actively explored in the area of environmental science. The purpose of this study is to examine students' alternative conceptions in the environmental science discipline through the analysis of responses of first year…

Emotions in teaching environmental science

Science.gov (United States)

Quigley, Cassie

2016-09-01

This op-ed article examines the emotional impact of teaching environmental science and considers how certain emotions can broaden viewpoints and other emotions narrow them. Specifically, it investigates how the topic of climate change became an emotional debate in a science classroom because of religious beliefs. Through reflective practice and examination of positionality, the author explored how certain teaching practices of pre-service science teachers created a productive space and other practices closed down the conversations. This article is framed with theories that explore both divergent and shared viewpoints.

High pressure XAFS experiments at the XAFS beamline, INDUS-2

International Nuclear Information System (INIS)

Ramanan, Nitya; Lahiri, Debdutta; Garg, Nandini; Sharma, Surinder M.; Bhattacharyya, D.; Jha, S.N.; Sahoo, N.K.

2011-01-01

The dispersive EXAFS beamline at the INDUS-2 synchrotron source, RRCAT, Indore uses a bent Si (111) crystal as a dispersive-cum-focusing element and a position sensitive CCD detector to enable instantaneous measurement of the whole EXAFS spectrum around the absorption edge of a particular atom. One of the proposed activities with this beamline is the characterization of amorphous materials under high pressure. Polychromator-based beamline is ideal for high pressure studies using Diamond Anvil Cell (DAC) with ∼ 50 μm sample size. Larger spot size would give rise to unwanted diffraction peaks from diamond, superimposed on the XAFS data. Micro-focusing by polychromator crystal and absence of its mechanical movement (unlike monochromator-based scanning-mode beamlines), during data collection, lead to required focal spot stability for DAC experiments. Currently, the theoretically determined spot size (Horizontal x vertical) varies between 17 x 137 μm and 37 x 142 μm for the X-ray energy range 5 keV-20 keV. To reduce the vertical spot size to <50 μm, we have designed an additional focusing mirror between the polychromator and sample position. The mirror, fabricated at SESO, France will be installed shortly. Meanwhile, we have carried out preliminary XAFS experiments on Sr-compounds at ∼16 keV, under ambient conditions and inside diamond anvil cell, in order to assess the signal intensity and quality. We have obtained reasonably good signal. (author)

1993 CAT workshop on beamline optical designs

Energy Technology Data Exchange (ETDEWEB)

1993-11-01

An Advanced Photon Source (APS) Collaborative Access Team (CAT) Workshop on Beamline Optical Designs was held at Argonne National Laboratory on July 26--27, 1993. The goal of this workshop was to bring together experts from various synchrotron sources to provide status reports on crystal, reflecting, and polarizing optics as a baseline for discussions of issues facing optical designers for CAT beamlines at the APS. Speakers from the European Synchrotron Radiation Facility (ESRF), the University of Chicago, the National Synchrotron Light Source, and the University of Manchester (England) described single- and double-crystal monochromators, mirrors, glass capillaries, and polarizing optics. Following these presentations, the 90 participants divided into three working groups: Crystal Optics Design, Reflecting Optics, and Optics for Polarization Studies. This volume contains copies of the presentation materials from all speakers, summaries of the three working groups, and a ``catalog`` of various monochromator designs.

1993 CAT workshop on beamline optical designs

International Nuclear Information System (INIS)

1993-11-01

An Advanced Photon Source (APS) Collaborative Access Team (CAT) Workshop on Beamline Optical Designs was held at Argonne National Laboratory on July 26--27, 1993. The goal of this workshop was to bring together experts from various synchrotron sources to provide status reports on crystal, reflecting, and polarizing optics as a baseline for discussions of issues facing optical designers for CAT beamlines at the APS. Speakers from the European Synchrotron Radiation Facility (ESRF), the University of Chicago, the National Synchrotron Light Source, and the University of Manchester (England) described single- and double-crystal monochromators, mirrors, glass capillaries, and polarizing optics. Following these presentations, the 90 participants divided into three working groups: Crystal Optics Design, Reflecting Optics, and Optics for Polarization Studies. This volume contains copies of the presentation materials from all speakers, summaries of the three working groups, and a ''catalog'' of various monochromator designs

Status and developmental strategy of nuclear agricultural sciences in researches of eco-environmental sciences in agriculture

International Nuclear Information System (INIS)

Hua Luo; Wang Xunqing

2001-01-01

The concept, research scopes, research progress and achievement of nuclear agricultural sciences in past several decades in China, as well as the relationship between nuclear agriculture research and eco-environmental sciences were described. The disciplinary frontier, major research fields and priority developmental fields of nuclear agriculture in eco-environmental sciences was displayed. Suggestions were made to improve and strengthen nuclear agriculture research. Those provided basic source materials and consideration for application developmental strategy of nuclear agriculture in eco-environmental sciences

MARS, a new beamline for radioactive matter studies at SOLEIL

International Nuclear Information System (INIS)

Solari, Pier Lorenzo; Schlutig, Sandrine; Hermange, Herve; Sitaud, Bruno

2009-01-01

MARS (Multi Analyses on Radioactive Samples) beamline is the hard X-ray bending magnet beamline dedicated to the study of radioactive matter of the new French synchrotron SOLEIL. The beamline, which has been built thanks to a close partnership and support by the CEA, has been designed to provide X-rays in the energy range of 3.5 keV to 35 keV. This allows to encompass M and L absorption edges of actinides, as well as K edges of transition metals (that are present in alloys and fuel claddings) up to heavy halogens, rare gases and alkalis (fission products in nuclear fuels). The MARS project aims to extend the possibilities of synchrotron based X-ray characterizations towards a wider variety of radioactive elements and a wider variety of techniques than what is currently available at other facilities. Thus, its specific and innovative infrastructure has been optimized in order to carry out analyses on materials with activities up to 18.5 GBq per sample for α and β emitters and 2 GBq for γ and n emitters. So, today, more than 70 different elements and more than 350 different isotopes have been proposed for studies on the beamline by the involved user community. The arrangement of the different elements in the optics hutch is based on an original scheme which permits to have two alternative optical configurations (monochromatic or dispersive) depending on the nature of experiments to be performed. At least three main techniques are progressively being proposed on the three complementary end-stations located in the experimental hutch: transmission and high resolution powder diffraction (TXRD and HRXRD), standard and dispersive X-ray absorption spectroscopy (XAS and EDXAS) and X-ray fluorescence (XRF). In addition, by using the KB optics, a micro-focused beam will be available on the second station of the monochromatic branch. The beamline is currently under commissioning. The first two experimental stations, using the monochromatic branch, are scheduled to be

How do marine and coastal citizen science experiences foster environmental engagement?

Science.gov (United States)

Dean, Angela J; Church, Emma K; Loder, Jenn; Fielding, Kelly S; Wilson, Kerrie A

2018-05-01

Citizen science programs enable community involvement in scientific research. In addition to fostering greater science literacy, some citizen science programs aim to foster engagement in environmental issues. However, few data are available to indicate whether and how citizen science programs can achieve greater environmental engagement. We survey individuals choosing to attend one of seventeen reef citizen science events and examine the extent to which attendees reported three indicators of greater environmental engagement: (i) willingness to share information, (ii) increased support for marine conservation and citizen science, and (iii) intentions to adopt a new behavior. Most participants reported being willing to share information about reef conservation (91%) and described increased support for marine science and conservation (87%). Half of participants (51%) reported intentions to adopt a new conservation behavior. We found that key elements of the citizen science experience associated with these outcomes were learning about actions to protect reefs and coasts (procedural learning), experiencing surprise, and experiencing negative emotions about environmental problems. Excitement was also associated with positive outcomes, but only in participants who were less likely to see themselves as environmental, or were less frequent visitors to reefs and coasts. Importantly, the association between factual learning and environmental engagement outcomes was limited or negative. These findings suggest that the way citizen science experiences make people feel, may be more important for fostering future environmental engagement than factual-based learning. When designing citizen science programs for community members, these findings provide a reminder to not focus on provision of factual information alone, but to highlight environmental impacts while providing meaningful experiences and building environmental skills. Copyright © 2018 Elsevier Ltd. All rights reserved.

ENVIRONMENTAL SYSTEMS MANAGEMENT: TOWARDS A NEW SCIENCE OF SUSTAINABLE ENVIRONMENTAL MANAGEMENT

Science.gov (United States)

Environmental Systems Management (ESM) is the management of environmental problems at the systems level fully accounting for the multi-dimensional nature of the environment. This includes socio-economic dimensions as well as the usual physical and life science aspects of environm...

Design and Construction of a High-speed Network Connecting All the Protein Crystallography Beamlines at the Photon Factory

International Nuclear Information System (INIS)

Matsugaki, Naohiro; Yamada, Yusuke; Igarashi, Noriyuki; Wakatsuki, Soichi

2007-01-01

A private network, physically separated from the facility network, was designed and constructed which covered all the four protein crystallography beamlines at the Photon Factory (PF) and Structural Biology Research Center (SBRC). Connecting all the beamlines in the same network allows for simple authentication and a common working environment for a user who uses multiple beamlines. Giga-bit Ethernet wire-speed was achieved for the communication among the beamlines and SBRC buildings

Vacuum ultraviolet beamline at the Swiss Light Source for chemical dynamics studies

International Nuclear Information System (INIS)

Johnson, Melanie; Bodi, Andras; Schulz, Lothar; Gerber, Thomas

2009-01-01

A bend-magnet vacuum ultraviolet (VUV) beamline, intended for chemical dynamics studies, was constructed and brought into operation at the Swiss Light Source (SLS) of the Paul Scherrer Institut. The beamline delivers synchrotron radiation in the 5-30 eV photon energy range with a photon flux of 10 11 photons/s at 10 eV and 10 12 photons/s at 20 eV with a resolving power of 2500. The resolving power increases to 10 4 at the cost of photon flux. An in-house designed rare gas filter is used to suppress higher harmonic radiation by a factor of >10 4 , yielding purely monochromatic light in the energy range of 5-21.6 eV. The filter is compact, easy to align, requires a total pumping power of less than 645 l/s and consumes only 3 normal l/h of filter gas. It is located at the end of the beamline, right in front of the experimental endstation. It is usually operated at a higher pressure than the endstation, which offers the additional benefit of protecting the beamline vacuum from sample contamination.

Hard x-ray nanoprobe of beamline P06 at PETRA III

Energy Technology Data Exchange (ETDEWEB)

Schroer, C. G., E-mail: christian.schroer@desy.de [Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, D-22607 Hamburg (Germany); Department Physik, Universität Hamburg, Luruper Chaussee 149, D-22761 Hamburg (Germany); Baumbach, C. [Institute of Optics and Photonics of Condensed Matter, Technische Universität Chemnitz, D-09126 Chemnitz (Germany); Döhrmann, R.; Kahnt, M.; Reinhardt, J.; Scholz, M.; Schropp, A.; Seyrich, M.; Wittwer, F.; Falkenberg, G. [Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, D-22607 Hamburg (Germany); Klare, S.; Hoppe, R.; Patommel, J.; Ritter, S.; Samberg, D.; Seiboth, F. [Institut für Strukturphysik, Technische Universität Dresden, D-01062 Dresden (Germany)

2016-07-27

The hard x-ray scanning microscope at beamline P06 of PETRA III at DESY in Hamburg serves a large user community, from physics, chemistry, and nanotechnology to the bio-medical, materials, environmental, and geosciences. It has been in user operation since 2012, and is mainly based on nanofocusing refractive x-ray lenses. Using refractive optics, nearly gaussian-limited nanobeams in the range from 50 to 100 nm can be generated in the hard x-ray energy range from 8 to 30 keV. The degree of coherence can be traded off against the flux in the nanobeam by a two-stage focusing scheme. We give a brief overview on published results from this instrument and describe its most important components and parameters.

Construction and characterization of a laser-driven proton beamline at GSI

OpenAIRE

Busold, Simon

2014-01-01

The thesis includes the first experiments with the new 100 TW laser beamline of the PHELIX laser facility at GSI Darmstadt to drive a TNSA (Target Normal Sheath Acceleration) proton source at GSI's Z6 experimental area. At consecutive stages a pulsed solenoid has been applied for beam transport and energy selection via chromatic focusing, as well as a radiofrequency cavity for energy compression of the bunch. This novel laser-driven proton beamline, representing a central experiment of the...

Laser-induced damage threshold tests of ultrafast multilayer dielectric coatings in various environmental conditions relevant for operation of ELI beamlines laser systems

Czech Academy of Sciences Publication Activity Database

Ďurák, Michal; Velpula, Praveen K.; Kramer, Daniel; Cupal, Josef; Medřík, Tomáš; Hřebíček, Jan; Golasowski, Jiří; Peceli, Davorin; Kozlová, Michaela; Rus, Bedřich

2017-01-01

Roč. 56, č. 1 (2017), s. 1-6, č. článku 011024. ISSN 0091-3286 R&D Projects: GA MŠk LQ1606; GA MŠk LM2015065; GA MŠk ED1.1.00/02.0061; GA MŠk EE.2.3.20.0091; GA MŠk EF15_008/0000162 Grant - others:ELI Beamlines(XE) CZ.1.05/1.1.00/02.0061; OP VK 1 Laser Sys(XE) CZ.1.07/2.3.00/20.0091; ELI Beamlines(XE) CZ.02.1.01/0.0/0.0/15_008/0000162 Institutional support: RVO:68378271 Keywords : Peta-watt class laser s * ultrafast laser s * behavior at different vacuum levels * cleaning treatment Subject RIV: BH - Optics, Masers, Laser s OBOR OECD: Optics (including laser optics and quantum optics) Impact factor: 1.082, year: 2016

7-GeV advanced photon source beamline initiative: Conceptual design report

International Nuclear Information System (INIS)

1993-05-01

The DOE is building a new generation 6-7 GeV Synchrotron Radiation Source known as the Advanced Photon Source (APS) at Argonne National Laboratory. This facility, to be completed in FY 1996, can provide 70 x-ray sources of unprecedented brightness to meet the research needs of virtually all scientific disciplines and numerous technologies. The technological research capability of the APS in the areas of energy, communications and health will enable a new partnership between the DOE and US industry. Current funding for the APS will complete the current phase of construction so that scientists can begin their applications in FY 1996. Comprehensive utilization of the unique properties of APS beams will enable cutting-edge research not currently possible. It is now appropriate to plan to construct additional radiation sources and beamline standard components to meet the excess demands of the APS users. In this APS Beamline Initiative, 2.5-m-long insertion-device x-ray sources will be built on four straight sections of the APS storage ring, and an additional four bending-magnet sources will also be put in use. The front ends for these eight x-ray sources will be built to contain and safeguard access to these bright x-ray beams. In addition, funds will be provided to build standard beamline components to meet scientific and technological research demands of the Collaborative Access Teams. The Conceptual Design Report (CDR) for the APS Beamline Initiative describes the scope of all the above technical and conventional construction and provides a detailed cost and schedule for these activities. The document also describes the preconstruction R ampersand D plans for the Beamline Initiative activities and provides the cost estimates for the required R ampersand D

New developments at the INE-Beamline for actinide research at ANKA

Science.gov (United States)

Dardenne, K.; Brendebach, B.; Denecke, M. A.; Liu, X.; Rothe, J.; Vitova, T.

2009-11-01

The INE-Beamline for actinide research at the synchrotron source ANKA is operated by the Institut für Nukleare Entsorgung (INE) at the Forschungszentrum Karlsruhe. Experiments on radioactive samples with activities up to 106 times the limit of exemption inside a safe and flexible double containment concept are possible. One great advantage of the beamline is its close proximity to INE's active laboratories with its equipment for manipulation of actinide materials and state-of-the-art spectroscopic, analytical, and microscopic instrumentation. This constellation is unique in Europe. The INE-Beamline is built primarily to serve INE in-house research associated with safe disposal of high level nuclear waste such as actinide speciation or coordination-, redox-, and geo-chemistry of actinides. A wide energy range from around 2.1 keV to 25 keV covering the K-edges from P to Pd and the L3, L2, and L1 edges for actinides from Th to Cm can be used. The INE-Beamline is optimized for X-ray absorption spectroscopy techniques (XANES/EXAFS), but x-ray fluorescence (XRF) analysis and powder diffraction (XRD) are also possible, as well as surface sensitive measurements in grazing incidence geometry (GI-XAFS). Upgrades of instrumentation and extension of experimental capabilities at the INE-Beamline are driven by user needs. Two of the recent upgrades are presented: 1) installation of a microfocus option for spatially resolved studies (μ-XRF, μ-XANES, μ-XRD) and investigations of small volumes (e.g., heterogeneous natural samples and diamond anvil high pressure cells); 2) construction, and commissioning of a high resolution x-ray emission spectrometer (HRXES); 3) availability of an electrochemical cell for investigation of redox sensitive systems.

Development of the XFP beamline for x-ray footprinting at NSLS-II

Energy Technology Data Exchange (ETDEWEB)

Bohon, Jen, E-mail: jbohon@bnl.gov; Sullivan, Michael; Abel, Don; Toomey, John; Chance, Mark R., E-mail: mark.chance@case.edu [Case Center for Synchrotron Biosciences, Center for Proteomics and Bioinformatics, Case Western Reserve University, Cleveland, OH (United States); Dvorak, Joseph [Brookhaven National Laboratory, Upton, NY (United States)

2016-07-27

For over a decade, synchrotron-based footprinting studies at the NSLS X28C beamline have provided unique insights and approaches for examining the solution-state structures of large macromolecular assemblies, membrane proteins, and soluble proteins, for time-resolved studies of macromolecular dynamics, and most recently for in vivo studies of RNA-protein complexes. The transition from NSLS to NSLS-II has provided the opportunity to create an upgraded facility for the study of increasingly complex systems; progress on the development of the XFP (X-ray Footprinting for In Vitro and In Vivo Structural Studies of Biological Macromolecules) beamline at NSLS-II is presented here. The XFP beamline will utilize a focused 3-pole wiggler source to deliver a high flux density x-ray beam, where dynamics can be studied on the microsecond to millisecond timescales appropriate for probing biological macromolecules while minimizing sample perturbation. The beamline optics and diagnostics enable adaptation of the beam size and shape to accommodate a variety of sample morphologies with accurate measurement of the incident beam, and the upgrades in sample handling and environment control will allow study of highly sensitive or unstable samples. The XFP beamline is expected to enhance relevant flux densities more than an order of magnitude from that previously available at X28C, allowing static and time-resolved structural analysis of highly complex samples that have previously pushed the boundaries of x-ray footprinting technology. XFP, located at NSLS-II 17-BM, is anticipated to become available for users in 2016.

Highlights from e-EPS: New milestone for ELI Beamlines facility

CERN Multimedia

Jorge Rivero González, e-EPS News

2013-01-01

e-EPS News is a monthly addition to the CERN Bulletin line-up, showcasing articles from e-EPS – the European Physical Society newsletter – as part of a collaboration between the two publications.   On 16 September 2013, the Extreme Light Infrastructure (ELI) Beamlines facility awarded a contract worth approximately €34.5m to Lawrence Livermore National Security LLC (LLNS, California, USA) to develop and deliver a state-of-the-art laser system that will be at the heart of the ELI Beamlines user facility. Located in the village of Dolní Břežany, Czech Republic, the ELI Beamlines facility aims to pioneer work in a number of research fields using ultra-high intensity lasers. The facility will host a cutting-edge research laser, around 100 times more powerful than any other laser in operation today. In particular, it will focus on providing users with ultra-short energetic particle beams (10 GeV) and radiation beams (up to a few MeV), produced by...

76 FR 67748 - National Institute of Environmental Health Sciences; Notice of Meeting

Science.gov (United States)

2011-11-02

... Environmental Health Sciences; Notice of Meeting Pursuant to section 10(a) of the Federal Advisory Committee Act...., Director, Division of Extramural Research and Training, Nat. Inst. of Environmental Health Sciences... Manpower Development in the Environmental Health Sciences; 93.113, Biological Response to Environmental...

National Synchrotron Light Source user's manual: Guide to the VUV and x-ray beamlines

International Nuclear Information System (INIS)

Gmuer, N.F.

1993-04-01

The success of the National Synchrotron Light Source is based, in large part, on the size of the user community and the diversity of the scientific and technical disciplines represented by these users. As evidence of this success, the VUV Ring has just celebrated its 10th anniversary and the X-ray Ring will do the same in 1995. In order to enhance this success, the NSLS User's Manual: Guide to the VUV and X-Ray Beamlines - Fifth Edition, is being published. This Manual presents to the scientific community-at-large the current and projected architecture, capabilities and research programs of the various VUV and X-ray beamlines. Also detailed is the research and computer equipment a General User can expect to find and use at each beamline when working at the NSLS. The Manual is updated periodically in order to keep pace with the constant changes on these beamlines

Publications in biomedical and environmental sciences programs, 1980

Energy Technology Data Exchange (ETDEWEB)

Pfuderer, H.A.; Moody, J.B.

1981-07-01

This bibliography contains 690 references to articles in journals, books, and reports published in the subject area of biomedical and environmental sciences during 1980. There are 529 references to articles published in journals and books and 161 references to reports. Staff members in the Biomedical and Environmental Sciences divisions have other publications not included in this bibliography; for example, theses, book reviews, abstracts published in journals or symposia proceedings, pending journal publications and reports such as monthly and bimonthly progress reports, contractor reports, and reports for internal distribution. This document is sorted by the division, and then alphabetically by author. The sorting by divisions separates the references by subject area in a simple way. The divisions represented in the order that they appear in the bibliography are Analytical Chemistry, Biology, Chemical Technology, Information R and D, Health and Safety Research, Energy, Environmental Sciences, and Computer Sciences.

Publications in biomedical and environmental sciences programs, 1980

International Nuclear Information System (INIS)

Pfuderer, H.A.; Moody, J.B.

1981-07-01

This bibliography contains 690 references to articles in journals, books, and reports published in the subject area of biomedical and environmental sciences during 1980. There are 529 references to articles published in journals and books and 161 references to reports. Staff members in the Biomedical and Environmental Sciences divisions have other publications not included in this bibliography; for example, theses, book reviews, abstracts published in journals or symposia proceedings, pending journal publications and reports such as monthly and bimonthly progress reports, contractor reports, and reports for internal distribution. This document is sorted by the division, and then alphabetically by author. The sorting by divisions separates the references by subject area in a simple way. The divisions represented in the order that they appear in the bibliography are Analytical Chemistry, Biology, Chemical Technology, Information R and D, Health and Safety Research, Energy, Environmental Sciences, and Computer Sciences

BEAMLINE-CONTROLLED STEERING OF SOURCE-POINT ANGLE AT THE ADVANCED PHOTON SOURCE

Energy Technology Data Exchange (ETDEWEB)

Emery, L.; Fystro, G.; Shang, H.; Smith, M.

2017-06-25

An EPICS-based steering software system has been implemented for beamline personnel to directly steer the angle of the synchrotron radiation sources at the Advanced Photon Source. A script running on a workstation monitors "start steering" beamline EPICS records, and effects a steering given by the value of the "angle request" EPICS record. The new system makes the steering process much faster than before, although the older steering protocols can still be used. The robustness features of the original steering remain. Feedback messages are provided to the beamlines and the accelerator operators. Underpinning this new steering protocol is the recent refinement of the global orbit feedback process whereby feedforward of dipole corrector set points and orbit set points are used to create a local steering bump in a rapid and seamless way.

How science makes environmental controversies worse

International Nuclear Information System (INIS)

Sarewitz, Daniel

2004-01-01

I use the example of the 2000 US Presidential election to show that political controversies with technical underpinnings are not resolved by technical means. Then, drawing from examples such as climate change, genetically modified foods, and nuclear waste disposal, I explore the idea that scientific inquiry is inherently and unavoidably subject to becoming politicized in environmental controversies. I discuss three reasons for this. First, science supplies contesting parties with their own bodies of relevant, legitimated facts about nature, chosen in part because they help make sense of, and are made sensible by, particular interests and normative frameworks. Second, competing disciplinary approaches to understanding the scientific bases of an environmental controversy may be causally tied to competing value-based political or ethical positions. The necessity of looking at nature through a variety of disciplinary lenses brings with it a variety of normative lenses, as well. Third, it follows from the foregoing that scientific uncertainty, which so often occupies a central place in environmental controversies, can be understood not as a lack of scientific understanding but as the lack of coherence among competing scientific understandings, amplified by the various political, cultural, and institutional contexts within which science is carried out. In light of these observations, I briefly explore the problem of why some types of political controversies become 'scientized' and others do not, and conclude that the value bases of disputes underlying environmental controversies must be fully articulated and adjudicated through political means before science can play an effective role in resolving environmental problems

Beam-line considerations for experiments with highly-charged ions

International Nuclear Information System (INIS)

Johnson, B.M.

1990-01-01

The APS offers exciting possibilities for a bright future in x-ray research. For example, measurements on the inner-shell photoionization of ions will be feasible using stored ions in ions traps or ion beams from an electron-cyclotron-resonance ion source, or perhaps even a heavy-ion storage ring. Such experiments with ionic targets are the focus for the discussion given here on the optimization of photon flux on a generic beamline at the APS. The performance of beam lines X26C, X26A, and X17 on the x-ray ring of the National Synchrotron Light Source will be discussed as specific examples of beam-line design considerations

Beam-line considerations for experiments with highly-charged ions

Energy Technology Data Exchange (ETDEWEB)

Johnson, B.M.

1990-01-01

The APS offers exciting possibilities for a bright future in x-ray research. For example, measurements on the inner-shell photoionization of ions will be feasible using stored ions in ions traps or ion beams from an electron-cyclotron-resonance ion source, or perhaps even a heavy-ion storage ring. Such experiments with ionic targets are the focus for the discussion given here on the optimization of photon flux on a generic beamline at the APS. The performance of beam lines X26C, X26A, and X17 on the x-ray ring of the National Synchrotron Light Source will be discussed as specific examples of beam-line design considerations.

Molecular Environmental Science and Synchrotron Radiation Facilities An Update of the 1995 DOE-Airlie Report on Molecular Environmental Science

Energy Technology Data Exchange (ETDEWEB)

Bargar, John R

1999-05-07

This workshop was requested by Dr. Robert Marianelli, Director of the DOE-BES Chemical Sciences Division, to update the findings of the Workshop on Molecular Environmental Sciences (MES) held at Airlie, VA, in July 1995. The Airlie Workshop Report defined the new interdisciplinary field referred to as Molecular Environmental Science (MES), reviewed the synchrotron radiation methods used in MES research, assessed the adequacy of synchrotron radiation facilities for research in this field, and summarized the beam time requirements of MES users based on a national MES user survey. The objectives of MES research are to provide information on the chemical and physical forms (speciation), spatial distribution, and reactivity of contaminants in natural materials and man-made waste forms, and to develop a fundamental understanding of the complex molecular-scale environmental processes, both chemical and biological, that affect the stability, transformations, mobility, and toxicity of contaminant species. These objectives require parallel studies of ''real'' environmental samples, which are complicated multi-phase mixtures with chemical and physical heterogeneities, and of simplified model systems in which variables can be controlled and fundamental processes can be examined. Only by this combination of approaches can a basic understanding of environmental processes at the molecular-scale be achieved.

Molecular Environmental Science and Synchrotron Radiation Facilities An Update of the 1995 DOE-Airlie Report on Molecular Environmental Science

International Nuclear Information System (INIS)

Bargar, John R

1999-01-01

This workshop was requested by Dr. Robert Marianelli, Director of the DOE-BES Chemical Sciences Division, to update the findings of the Workshop on Molecular Environmental Sciences (MES) held at Airlie, VA, in July 1995. The Airlie Workshop Report defined the new interdisciplinary field referred to as Molecular Environmental Science (MES), reviewed the synchrotron radiation methods used in MES research, assessed the adequacy of synchrotron radiation facilities for research in this field, and summarized the beam time requirements of MES users based on a national MES user survey. The objectives of MES research are to provide information on the chemical and physical forms (speciation), spatial distribution, and reactivity of contaminants in natural materials and man-made waste forms, and to develop a fundamental understanding of the complex molecular-scale environmental processes, both chemical and biological, that affect the stability, transformations, mobility, and toxicity of contaminant species. These objectives require parallel studies of ''real'' environmental samples, which are complicated multi-phase mixtures with chemical and physical heterogeneities, and of simplified model systems in which variables can be controlled and fundamental processes can be examined. Only by this combination of approaches can a basic understanding of environmental processes at the molecular-scale be achieved

Understanding leadership in the environmental sciences

OpenAIRE

Evans, L.; Hicks, C.; Cohen, P.; Case, P.; Prideaux, M.; Mills, D.

2015-01-01

Leadership is often assumed, intuitively, to be an important driver of sustainable development. To understand how leadership is conceptualised and analysed in the environmental sciences and to discover what this research says about leadership outcomes, we conducted a review of environmental leadership research over the last ten years. We find that much of the environmental leadership literature we reviewed focuses on a few key individuals and desirable leadership competencies. It also reports...

Status of the Nanoscopium scanning nanoprobe beamline of Synchrotron Soleil

Science.gov (United States)

Somogyi, A.; Medjoubi, K.; Kewish, C. M.; Leroux, V.; Ribbens, M.; Baranton, G.; Polack, F.; Samama, J. P.

2013-09-01

The Nanoscopium 155 m-long scanning nanoprobe beamline of Synchrotron Soleil (St Aubin, France) is dedicated to quantitative multi-modal imaging. Dedicated experimental stations, working in consecutive operation mode, will provide coherent scatter imaging and spectro-microscopy techniques in the 5-20 keV energy range for various user communities. Next to fast scanning, cryogenic cooling will reduce the radiation damage of sensitive samples during the measurements. Nanoscopium is in the construction phase, the first user experiments are expected in 2014. The main characteristics of the beamline and an overview of its status are given in this contribution.

75 FR 55805 - National Institute of Environmental Health Sciences; Notice of Meeting

Science.gov (United States)

2010-09-14

... Environmental Health Sciences; Notice of Meeting Pursuant to section 10(a) of the Federal Advisory Committee Act... Environmental Health Sciences, 615 Davis Dr., KEY615/3112, Research Triangle Park, NC 27709. (919) 541-4980... Environmental Health Sciences; 93.113, Biological Response to Environmental Health Hazards; 93.114, Applied...

Optical Design in Phase-Space for the I13L X-Ray Imaging and Coherence Beamline at Diamond using XPHASY

International Nuclear Information System (INIS)

Wagner, Ulrich H.; Rau, Christoph

2010-01-01

I13L is a 250 m long beamline for imaging and coherent diffraction currently under construction at the Diamond Light Source. For modeling the beamline optics the phase-space based ray-tracing code XPHASY was developed, as general ray-tracing codes for x-rays do not easily allow studying the propagation of coherence along the beamline. In contrast to computational intensive wave-front propagation codes, which fully describe the propagation of a photon-beam along a beamline but obscure the impact of individual optical components onto the beamline performance, this code allows to quickly calculate the photon-beam propagation along the beamline and estimate the impact of individual components.In this paper we will discuss the optical design of the I13L coherence branch from the perspective of phase-space by using XPHASY. We will demonstrate how the phase-space representation of a photon-beam allows estimating the coherence length at any given position along the beamline. The impact of optical components on the coherence length and the effect of vibrations on the beamline performance will be discussed. The paper will demonstrate how the phase-space representation of photon-beams allows a more detailed insight into the optical performance of a coherence beamline than ray-tracing in real space.

Exploring Environmental Identity and Behavioral Change in an Environmental Science Course

Science.gov (United States)

Blatt, Erica N.

2013-01-01

This ethnographic study at a public high school in the Northeastern United States investigates the process of change in students' environmental identity and proenvironmental behaviors during an Environmental Science course. The study explores how sociocultural factors, such as students' background, social interactions, and classroom structures,…

The design of an automatically-tuned beamline

International Nuclear Information System (INIS)

Ball, M.S.; Ellison, T.J.P.; Hamilton, B.J.; Jones, W.P.

1994-01-01

A new 30 m beamline (BL1C) is being assembled to connect the new High Intensity Polarized Ion Source (HIPIOS) to the IUCF cyclotrons. This line is being instrumented for complete automatic optimization of all transverse and longitudinal ion optical elements by providing a unique feedback signal for each controllable device. Transversely, steerers and 4-quadrant electrostatic pickups are located approximately 90 degree apart in betatron phase advance along the beamline. Each pickup is instrumented with a single-board, 4-layer op-amp circuit (BPM system) which measures the beam intensity, horizontal (H) and vertical (V) position, and H and V 10 Hz position modulation. The transverse beam ellipse parameters are first automatically determined at the entrance to the beamline by measuring the beam size using a wire scanner as a function of the strength of a quadrupole. The computer then programs the amplitude and phase of four 10 Hz modulators which vary the current in 4 steerers to move the beam centroid around this (reduced area) ellipse in 4-dimensional phase space. The BPM system then outputs voltages proportional to the beam intensity, centroid location, and envelope. Computer algorithms will then set the steerers and quadrupoles to correct the beam position, dispersion, and envelope. Longitudinally, hardware feedback loops, with a bandwidth adjustable from 10 Hz to 30 kHz, will phase-lock the beam to the two bunching systems; another hardware system will automatically vary the buncher amplitudes to compensate for the significant and varying space charge defocusing as the beam current fluctuates. The bunchers' quiescent phases and amplitudes will be optimized using software ''synchronous detectors.''

The first synchrotron infrared beamlines at the Advanced Light Source: Spectromicroscopy and fast timing

International Nuclear Information System (INIS)

Martin, Michael C.; McKinney, Wayne R.

1999-01-01

Two recently commissioned infrared beamlines on the 1.4 bending magnet port at the Advanced Light Source, LBNL, are described. Using a synchrotron as an IR source provides three primary advantages: increased brightness, very fast light pulses, and enhanced far-IR flux. The considerable brightness advantage manifests itself most beneficially when performing spectroscopy on a microscopic length scale. Beamline (BL) 1.4.3 is a dedicated FTIR spectromicroscopy beamline, where a diffraction-limited spot size using the synchrotron source is utilized. BL 1.4.2 consists of a vacuum FTIR bench with a wide spectral range and step-scan capability. This BL makes use of the pulsed nature of the synchrotron light as well as the far-IR flux. Fast timing is demonstrated by observing the pulses from the electron bunch storage pattern at the ALS. Results from several experiments from both IR beamlines will be presented as an overview of the IR research currently being done at the ALS

Publications in biomedical and environmental sciences programs, 1981

Energy Technology Data Exchange (ETDEWEB)

Moody, J.B. (comp.)

1982-07-01

This bibliography contains 698 references to articles in journals, books, and reports published in the subject area of biomedical and environmental sciences during 1981. There are 520 references to articles published in journals and books and 178 references to reports. Staff members in the Biomedical and Environmental Sciences divisions have other publications not included in this bibliography; for example, theses, book reviews, abstracts published in journals or symposia proceedings, pending journal publications and reports such as monthly, bimonthly, and quarterly progress reports, contractor reports, and reports for internal distribution. This document is sorted by the division, and then alphabetically by author. The sorting by divisions separates the references by subject area in a simple way. The divisions represented in the order that they appear in the bibliography are Analytical Chemistry, Biology, Chemical Technology, Information R and D, Health and Safety Research, Instrumentation and Controls, Computer Sciences, Energy, Engineering Technology, Solid State, Central Management, Operations, and Environmental Sciences. Indexes are provided by author, title, and journal reference.

Publications in biomedical and environmental sciences programs, 1981

International Nuclear Information System (INIS)

Moody, J.B.

1982-07-01

This bibliography contains 698 references to articles in journals, books, and reports published in the subject area of biomedical and environmental sciences during 1981. There are 520 references to articles published in journals and books and 178 references to reports. Staff members in the Biomedical and Environmental Sciences divisions have other publications not included in this bibliography; for example, theses, book reviews, abstracts published in journals or symposia proceedings, pending journal publications and reports such as monthly, bimonthly, and quarterly progress reports, contractor reports, and reports for internal distribution. This document is sorted by the division, and then alphabetically by author. The sorting by divisions separates the references by subject area in a simple way. The divisions represented in the order that they appear in the bibliography are Analytical Chemistry, Biology, Chemical Technology, Information R and D, Health and Safety Research, Instrumentation and Controls, Computer Sciences, Energy, Engineering Technology, Solid State, Central Management, Operations, and Environmental Sciences. Indexes are provided by author, title, and journal reference

Optical design of an x-ray absorption spectroscopy beamline at Indus-2 synchrotron radiation source

International Nuclear Information System (INIS)

Das, N.C.; Jha, S.N.; Roy, A.P.

1999-10-01

Details of optical design of EXAFS beamline at Indus-2 SRS, under development at CAT, Indore, have been discussed in this report. This beamline will cover the photon energy range of 5 keV to 20 keV and will use a bent crystal of Si(111) having 2d value equal to 6.2709 A. It will accept a horizontal divergence of 1.5 mrad. The heart of the beamline is the bent crystal polychromator which will disperse and focus the synchrotron beam at the experimental sample position. The transmitted radiation from the sample will be, subsequently, detected by a position sensitive detector (CCD type). The detector length is 25 mm. Assuming a suitable value for the distance between the source and the crystal, we have computed several geometrical parameters of the beamline, such as, Bragg angle, crystal length, crystal radius, crystal to sample distance, sample to detector distance, etc. for three different photon energies, namely, 5 keV, 10 keV, and 20 keV. The band passes around these photon energies are 0.3 keV, 1 keV and 2 keV respectively. It has been found that computed geometrical parameters are well within acceptable limits. An extensive ray tracing work was done using the software program SHADOW to evaluate the imaging properties of the beamline. It was established that the image spot size at the sample position improved substantially when the crystal is changed from spherical cylinder shape to elliptic cylinder shape. From the ray intensity plots, the average resolution of the crystal bender was estimated to be 1 eV per channel. Finally based on the optical layout of the beamline, a schematic mechanical layout of the beamline has been prepared. (author)

Biological sciences teaching undergraduates’ environmental knowledge: a critical analysis

Directory of Open Access Journals (Sweden)

Silvana do Nascimento Silva

2013-12-01

Full Text Available Nowadays, environmental issues have been addressed in a way that goes beyond the natural impacts, embracing socio-economic, political and cultural aspects. This paper makes a description of the types of environmental conceptions, giving special emphasis to the interactions that permeate it, and develops an empirical work by analyzing the conceptions about the environmental knowledge of students majoring in a teacher preparation course on biological sciences of a university in the State of Bahia, Brazil. In a qualitative research, data were collected by application of a questionnaire with open questions with answers in text and drawings. The results revealed a predominance of naturalistic conceptions, while socio-environmental conceptions of systemic or socio-metabolic characteristics were not found. These findings lead to the need for the integration of these critical approaches about the environmental issue in Sciences and Biology teachers’ training, emphasizing the interactions between work, nature and society. Finally, some suggestions also emerge for future research, among which to analyze the biological sciences university teachers’ environmental conceptions and an action-research with these investigated undergraduates concerning environmental critical approaches.

A Reconstructed Vision of Environmental Science Literacy: The Case of Qatar

Science.gov (United States)

Khishfe, Rola

2014-01-01

The purpose of this study was twofold: (a) develop a conceptual framework for environmental science literacy; and consequently (b) examine the potential of science standards/curricula to prepare environmentally literate citizens. The framework comprised four pillars: science content knowledge, scientific inquiry, nature of science (NOS), and…

Environmental science and technology

International Nuclear Information System (INIS)

2014-01-01

The Program on Environmental Science and Technology developed at the Chemical and Environmental Technology Center comprehends environmental chemistry (water, soil and atmospheric chemistry), clean technologies (desulfurization of diesel and oil, biodegradable polymers and structural modification of polymers, recycling, pyrolysis of dangerous chemicals by molten salt technology), nanotechnology (magnetic nanoparticles, dendrimers, nano biomarkers, catalysts) and chemical characterization of nuclear fuel and nuclear fuel cycle waste (chemical and isotopic characterization). The Chemical and Environmental Technology Center was established in 1995, as an evolution of the former Department of Chemistry Engineering (1970). The program on environment science and technology was structured as consequence of the continuous growth of environmental activities on areas related to nuclear programs of IPEN. Moreover, it was an answer to the society concerning the climate changes and biodiversity preservation. All activities of research and development, services, supervision of graduate and under graduated students and courses performance at the center were related to the development, improvement and establishment of new technologies. The highlights of this period (2011 - 2013) were: - Development and use of modern analytical technology for the characterization of persistent pollutants and endocrine disrupters (metals, PAHA’s, PCBs, Pesticides, hormones, surfactants, plasticizer and human pharmaceuticals) in order to evaluate water quality and/or sediments; - Atmospheric chemistry and greenhouse gases: Evaluating an estimation of surface trace gas fluxes from aircraft measurements above the Amazon; - Cooperation with SABESP (Water and Sewage Company) and CETESB (State Environment Agency) in program for the development of public policies; - Studies and development in biodegradable polymers, polyolefins and advanced methods for polymer and rubber recycling and re-use; - Studies

Environmental science and technology

Energy Technology Data Exchange (ETDEWEB)

NONE

2014-07-01

The Program on Environmental Science and Technology developed at the Chemical and Environmental Technology Center comprehends environmental chemistry (water, soil and atmospheric chemistry), clean technologies (desulfurization of diesel and oil, biodegradable polymers and structural modification of polymers, recycling, pyrolysis of dangerous chemicals by molten salt technology), nanotechnology (magnetic nanoparticles, dendrimers, nano biomarkers, catalysts) and chemical characterization of nuclear fuel and nuclear fuel cycle waste (chemical and isotopic characterization). The Chemical and Environmental Technology Center was established in 1995, as an evolution of the former Department of Chemistry Engineering (1970). The program on environment science and technology was structured as consequence of the continuous growth of environmental activities on areas related to nuclear programs of IPEN. Moreover, it was an answer to the society concerning the climate changes and biodiversity preservation. All activities of research and development, services, supervision of graduate and under graduated students and courses performance at the center were related to the development, improvement and establishment of new technologies. The highlights of this period (2011 - 2013) were: - Development and use of modern analytical technology for the characterization of persistent pollutants and endocrine disrupters (metals, PAHA’s, PCBs, Pesticides, hormones, surfactants, plasticizer and human pharmaceuticals) in order to evaluate water quality and/or sediments; - Atmospheric chemistry and greenhouse gases: Evaluating an estimation of surface trace gas fluxes from aircraft measurements above the Amazon; - Cooperation with SABESP (Water and Sewage Company) and CETESB (State Environment Agency) in program for the development of public policies; - Studies and development in biodegradable polymers, polyolefins and advanced methods for polymer and rubber recycling and re-use; - Studies

Environmental science-policy interactions

DEFF Research Database (Denmark)

Kamelarczyk, Kewin Bach Friis

+ (Reduced Emissions from Deforestation and forest Degradation and enhancement of forest carbon stocks) process and the phenomenon of deforestation in Zambia as research examples. The research was carried out from mid 2008 and to mid 2013 and applies a mixed methods research design. Fieldwork was carried out...... to science? This PhD thesis contributes to answering this questions; however it does this by questioning the conceptions of science that contribute to political decision-making and by exploring the relationship between scientific knowledge, other types of knowledge and policy. This PhD study employs the REDD...... in future REDD+ design and implementation. To curtail potential negative consequences of the identified mode of science-policy interaction in Zambia, the study concludes by making a number of proposals. The proposals are generic in nature and may be found relevant in environmental policy processes outside...

The design of the beamline for magnetic circular dichroism study at HNSRL

CERN Document Server

ShengWeiFan; Li Da Shi; Yan Yong Lia

2000-01-01

A synchrotron radiation beamline for MCD study is being developed at Hefei National Synchrotron Radiation Laboratory (HNSRL) in the P. R. China. As a key component on the beamline, the varied line-spacing plane grating (VLSPG) monochromator is designed to cover a broad photon energy range from 100 to 1000 eV with a medium energy resolving power of 2000. The design is analyzed and optimized to meet the high requirements of MCD studying.

Panarchy use in environmental science for risk and resilience ...

Science.gov (United States)

Environmental sciences have an important role in informing sustainable management of built environments by providing insights about the drivers and potentially negative impacts of global environmental change. Here, we discuss panarchy theory, a multi-scale hierarchical concept that accounts for the dynamism of complex socio-ecological systems, especially for those systems with strong cross-scale feedbacks. The idea of panarchy underlies much of system resilience, focusing on how systems respond to known and unknown threats. Panarchy theory can provide a framework for qualitative and quantitative research and application in the environmental sciences, which can in turn inform the ongoing efforts in socio-technical resilience thinking and adaptive and transformative approaches to management. The environmental sciences strive for understanding, mitigating and reversing the negative impacts of global environmental change, including chemical pollution, to maintain sustainability options for the future, and therefore play an important role for informing management.

An unique synchrotron beamline for fine X ray characterizations of nuclear fuel cycle materials

Energy Technology Data Exchange (ETDEWEB)

Sitaud, B.; Lequien, S

2004-07-01

A beamline dedicated to the study of highly radioactive samples up to 18.5 GBq will be constructed on the new third generation synchrotron SOLEIL. Based on the use of X ray beam of very high flux, this beamline named MARS will give true opportunities for new studies of chemistry and physics on fuel cycle materials with the respect of safety conditions. Complementary investigations should be carried out on different experimental stations. The three main techniques will be the micro fluorescence, the micro absorption and the high resolution diffraction. The MARS beamline should be up and working for the international community by the beginning of 2007. (authors)

An unique synchrotron beamline for fine X ray characterizations of nuclear fuel cycle materials

International Nuclear Information System (INIS)

Sitaud, B.; Lequien, S.

2004-01-01

A beamline dedicated to the study of highly radioactive samples up to 18.5 GBq will be constructed on the new third generation synchrotron SOLEIL. Based on the use of X ray beam of very high flux, this beamline named MARS will give true opportunities for new studies of chemistry and physics on fuel cycle materials with the respect of safety conditions. Complementary investigations should be carried out on different experimental stations. The three main techniques will be the micro fluorescence, the micro absorption and the high resolution diffraction. The MARS beamline should be up and working for the international community by the beginning of 2007. (authors)

TREFF: Reflectometer and instrument component test beamline at MLZ

Directory of Open Access Journals (Sweden)

Peter Link

2017-11-01

Full Text Available TREFF is a high resolution polarized neutron reflectometer and instrument component test beamline resulting in a highly modular instrument providing a flexible beam line for various applications.

Intensity interferometry at the X13A undulator beamline

International Nuclear Information System (INIS)

Gluskin, E.; McNulty, I.; Yang, L.; Randall, K.J.; Johnson, E.D.

1993-01-01

We are constructing a soft x-ray intensity interferometer and an undulator based beamline to demonstrate intensity interferometry in the x-ray region. The 10-period soft x-ray undulator at the NSLS provides the necessary coherent flux; the X13A beamline is designed to preserve the spatial coherence of the bright x-ray beam and provide sufficient temporal coherence using a horizontally deflecting spherical grating monochromator. Using the interferometer, which consists of an array of small slits, a wedge-shaped beamsplitter and two fast microchannel plate detectors, we expect to measure the spatial coherence of the undulator beam and therefore the size of the source in the vertical plane. Details of the bean-dine design and the interferometer experiment are discussed

76 FR 50235 - National Institute of Environmental Health Sciences; Notice of Meetings

Science.gov (United States)

2011-08-12

... Environmental Health Sciences; Notice of Meetings Pursuant to section 10(a) of the Federal Advisory Committee... (DERT), Nat. Inst. of Environmental Health Sciences, National Institutes of Health, 615 Davis Dr... of Extramural Research and Training (DERT), Nat. Inst. of Environmental Health Sciences, National...

76 FR 7574 - National Institute of Environmental Health Sciences; Notice of Meetings

Science.gov (United States)

2011-02-10

... Environmental Health Sciences; Notice of Meetings Pursuant to section 10(a) of the Federal Advisory Committee... Cancer and Environmental Research Coordinating Committee State of the Science Subcommittee. These... Environmental Research Coordinating Committee (IBCERC) State of the Science Subcommittee. Date: March 29, 2011...

Accelerate synthesis in ecology and environmental sciences

Science.gov (United States)

Synthesis of diverse knowledge is a central part of all sciences, but especially those such as ecology and environmental sciences which draw information from many disciplines. Research and education in ecology are intrinsically synthetic, and synthesis is increasingly needed to find solutions for en...

1998 Environmental Management Science Program Annual Report

International Nuclear Information System (INIS)

1999-01-01

The Environmental Management Science Program (EMSP) is a collaborative partnership between the DOE Office of Environmental Management (EM), Office of Science (DOE-SC), and the Idaho Operations Office (DOE-ID) to sponsor basic environmental and waste management related research. Results are expected to lead to reduction of the costs, schedule, and risks associated with cleaning up the nation's nuclear complex. The EMSP research portfolio addresses the most challenging technical problems of the EM program related to high level waste, spent nuclear fuel, mixed waste, nuclear materials, remedial action, decontamination and decommissioning, and health, ecology, or risk. The EMSP was established in response to a mandate from Congress in the fiscal year 1996 Energy and Water Development Appropriations Act. Congress directed the Department to ''provide sufficient attention and resources to longer-term basic science research which needs to be done to ultimately reduce cleanup costs, develop a program that takes advantage of laboratory and university expertise, and seek new and innovative cleanup methods to replace current conventional approaches which are often costly and ineffective''. This mandate followed similar recommendations from the Galvin Commission to the Secretary of Energy Advisory Board. The EMSP also responds to needs identified by National Academy of Sciences experts, regulators, citizen advisory groups, and other stakeholders

78 FR 18997 - National Institute of Environmental Health Sciences; Notice of Meeting

Science.gov (United States)

2013-03-28

... Environmental Health Sciences; Notice of Meeting Pursuant to section 10(d) of the Federal Advisory Committee Act... personnel issues. Place: Nat. Inst. of Environmental Health Sciences, Building 101, Rodbell Auditorium, 111.... Agenda: Poster Sessions. Place: Nat. Inst. of Environmental Health Sciences, Building 101, Rodbell...

76 FR 79201 - National Institute of Environmental Health Sciences; Notice of Meeting

Science.gov (United States)

2011-12-21

... Environmental Health Sciences; Notice of Meeting Pursuant to section 10(a) of the Federal Advisory Committee Act...: Nat. Inst. of Environmental Health Sciences, Building 101, Rodbell Auditorium, 111 T. W. Alexander...., Director, Division of Extramural Research and Training, Nat. Inst. of Environmental Health Sciences...

77 FR 26300 - National Institute of Environmental Health Sciences; Notice of Meeting

Science.gov (United States)

2012-05-03

... Environmental Health Sciences; Notice of Meeting Pursuant to section 10(d) of the Federal Advisory Committee Act... Structural Biology. Place: Nat. Inst. of Environmental Health Sciences, Building 101, Rodbell Auditorium, 111... Environmental Health Sciences, Building 101, Rodbell Auditorium, 111 T. W. Alexander Drive, Research Triangle...

76 FR 7572 - National Institute of Environmental Health Sciences; Notice of Meetings

Science.gov (United States)

2011-02-10

... Environmental Health Sciences; Notice of Meetings Pursuant to section 10(a) of the Federal Advisory Committee..., Director, Division of Extramural Research and Training, National Institute of Environmental Health Sciences... of Environmental Health Sciences, 615 Davis Dr., KEY615/3112, Research Triangle Park, NC 27709, (919...

76 FR 50234 - National Institute of Environmental Health Sciences Notice of Meetings

Science.gov (United States)

2011-08-12

... Environmental Health Sciences Notice of Meetings Pursuant to section 10(a) of the Federal Advisory Committee Act... of Extramural Research and Training (DERT), Nat. Inst. of Environmental Health Sciences, National..., Division of Extramural Research and Training (DERT), Nat. Inst. of Environmental Health Sciences, National...

76 FR 77239 - National Institute of Environmental Health Sciences; Notice of Meeting

Science.gov (United States)

2011-12-12

... Environmental Health Sciences; Notice of Meeting Pursuant to section 10(a) of the Federal Advisory Committee Act.../boards/ibcercc/ . Place: National Institute of Environmental Health Sciences, Building 101, Rodbell... and Education; 93.894, Resources and Manpower Development in the Environmental Health Sciences; 93.113...

78 FR 26643 - National Institute of Environmental Health Sciences; Notice of Meeting

Science.gov (United States)

2013-05-07

... Environmental Health Sciences; Notice of Meeting Pursuant to section 10(d) of the Federal Advisory Committee Act... Epidemiology Group and Biomarker-Based Epidemiology Group. Place: Nat. Inst. of Environmental Health Sciences.... Place: Nat. Inst. of Environmental Health Sciences, Building 101, Rodbell Auditorium, 111 T. W...

75 FR 7487 - National Institute of Environmental Health Sciences; Notice of Closed Meeting

Science.gov (United States)

2010-02-19

... Environmental Health Sciences; Notice of Closed Meeting Pursuant to section 10(d) of the Federal Advisory..., Scientific Review Administrator, National Inst. of Environmental Health Sciences, Office of Program... Manpower Development in the Environmental Health Sciences; 93.113, Biological Response to Environmental...

ETHICS AND JUSTICE IN ENVIRONMENTAL SCIENCE AND ENGINEERING

Science.gov (United States)

Science and engineering are built on trust. C.P. Snow's famous quote, "the only ethical principle which has made science possible is that the truth shall be told all the time" underscores the importance of honesty in science. Environmental scientists must do work that is useful...

Functional description of APS beamline front ends

International Nuclear Information System (INIS)

Kuzay, T.

1993-02-01

Traditional synchrotron sources were designed to produce bending magnet radiation and have proven to be an essential scientific tool. Currently, a new generation of synchrotron sources is being built that will be able to accommodate a large number of insertion device (ID) and high quality bending magnet (BM) sources. One example is the 7-GeV Advanced Photon Source (APS) now under construction at Argonne National Laboratory. The research and development effort at the APS is designed to fully develop the potential of this new generation of synchrotron sources. Of the 40 straight sections in the APS storage ring, 34 will be available for IDs. The remaining six sections are reserved for the storage ring hardware and diagnostics. Although the ring incorporates 80 BMs, only 40 of them can be used to extract radiation. The accelerator hardware shadows five of these 40 bending magnets, so the maximum number of BM sources on the lattice is 35. Generally, a photon beamline consists of four functional sections. The first section is the ID or the BM, which provides the radiation source. The second section, which is immediately outside the storage ring but inside a concrete shielding tunnel, is the front end, which is designed to control, define, and/or confine the x-ray beam. In the case of the APS, the front ends are designed to confine the photon beam. The third section, just outside the concrete shielding tunnel and on the experimental floor, is the first optics enclosure, which contains optics to filter and monochromatize the photon beam. The fourth section of a beamline consists of beam transports, additional optics, and experiment stations to do the scientific investigations. This document describes only the front ends of the APS beamlines

77 FR 66853 - National Institute of Environmental Health Sciences; Notice of Closed Meetings

Science.gov (United States)

2012-11-07

... Environmental Health Sciences; Notice of Closed Meetings Pursuant to section 10(d) of the Federal Advisory... Health Sciences Special Emphasis Panel Career Grants in the Environmental Health Sciences. Date: November...., Scientific Review Administrator, Nat. Institute of Environmental Health Sciences, Office of Program...

The vacuum interlock system for the PETRA III beamlines

Energy Technology Data Exchange (ETDEWEB)

Degenhardt, Markus; Hahn, Ulrich; Hesse, Mathias; Schulte-Schrepping, Horst [Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)

2008-07-01

The storage ring PETRA at DESY in Hamburg is being reconstructed into the third generation source for synchrotron radiation, PETRA III. The up to 100 m long beamlines are large UHV-systems that guide the synchrotron radiation from the storage ring to the experiments. Each beamline will be equipped with a vacuum interlock system to ensure the safe operation of the vacuum components. In particular the task of the vacuum interlock is to prevent faulty operations that can cause a ventilation of the vacuum system or a damage of vacuum components by the high power synchrotron radiation beam. The interlock system will be implemented as a PLC that is connected to a distributed input/output layer via a field bus system. As a specialty, the PLC will be realised as a soft-PLC running on a PC with a real time windows operating system. Another specialty is the visualisation and remote control of the vacuum interlock system by means of a website. At the beamline the interlock will be operated via a touch panel that displays the visualisation website. Additionally, the interlock can be remotely operated from any location by opening the visualisation website with a browser. The interlock is protected against unauthorised operation by a login page. All relevant interlock data will be fed into the existing network-based archive system.

76 FR 80954 - National Institute of Environmental Health Sciences; Notice of Meeting

Science.gov (United States)

2011-12-27

... Environmental Health Sciences; Notice of Meeting Pursuant to section 10(a) of the Federal Advisory Committee Act.../boards/ibcercc/ . Place: Nat. Inst. of Environmental Health Sciences, Building 101, Rodbell Auditorium... Environmental Health Sciences, National Institutes of Health, 615 Davis Dr., KEY615/3112, Research Triangle Park...

75 FR 3474 - National Institute of Environmental Health Sciences; Notice of Meeting

Science.gov (United States)

2010-01-21

... Environmental Health Sciences; Notice of Meeting Pursuant to section 10(d) of the Federal Advisory Committee Act... Environmental Health Sciences Council. The meeting will be open to the public as indicated below, with... of Committee: National Advisory Environmental Health Sciences Council. Date: February 18-19, 2010...

75 FR 49500 - National Institute of Environmental Health Sciences; Notice of Meeting

Science.gov (United States)

2010-08-13

... Environmental Health Sciences; Notice of Meeting Pursuant to section 10(d) of the Federal Advisory Committee Act... Environmental Health Sciences Council. The meeting will be open to the public as indicated below, with... Committee: National Advisory Environmental Health Sciences Council. Date: September 1-2, 2010. Open...

75 FR 34147 - National Institute of Environmental Health Sciences; Notice of Closed Meeting

Science.gov (United States)

2010-06-16

... Environmental Health Sciences; Notice of Closed Meeting Pursuant to section 10(d) of the Federal Advisory... Review Branch, Division of Extramural Research and Training, Nat. Institute Environmental Health Sciences... Development in the Environmental Health Sciences; 93.113, Biological Response to Environmental Health Hazards...

78 FR 51734 - National Institute of Environmental Health Sciences; Notice of Closed Meeting

Science.gov (United States)

2013-08-21

... Environmental Health Sciences; Notice of Closed Meeting Pursuant to section 10(d) of the Federal Advisory..., Nat. Institute of Environmental Health Sciences, Office of Program Operations, Scientific Review... Development in the Environmental Health Sciences; 93.113, Biological Response to Environmental Health Hazards...

75 FR 32797 - National Institute of Environmental Health Sciences; Notice of Closed Meeting

Science.gov (United States)

2010-06-09

... Environmental Health Sciences; Notice of Closed Meeting Pursuant to section 10(d) of the Federal Advisory... Branch, Division of Extramural Research and Training, Nat. Institute of Environmental Health Sciences, P... Manpower Development in the Environmental Health Sciences; 93.113, Biological Response to Environmental...

78 FR 27410 - National Institute of Environmental Health Sciences; Notice of Closed Meeting

Science.gov (United States)

2013-05-10

... Environmental Health Sciences; Notice of Closed Meeting Pursuant to section 10(d) of the Federal Advisory..., Nat. Institute of Environmental Health Sciences, Office of Program Operations, Scientific Review... the Environmental Health Sciences; 93.113, Biological Response to Environmental Health Hazards; 93.114...

Diagnostics Beamline for the SRF Gun Project

CERN Document Server

Kamps, T; Goldammer, K; Krämer, Dietrich; Kuske, P; Kuszynski, J; Lipka, D; Marhauser, F; Quast, T; Richter, R

2005-01-01

A superconducting rf photo electron injector (SRF gun) is currently under construction by a collaboration between BESSY, DESY, FZR and MBI. The project aims at the design and setup of an CW SRF gun including a diagnostics beamline for the ELBE FEL and to address R&D issues on low emittance injectors for future light sources such as the BESSY FEL. Of critical importance for the injector performance is the control of the electron beam parameters. For this reason a compact diagnostics beamline is under development serving a multitude of operation settings ranging from low-charge (77pC), low-emittance (1 pi mm mrad) mode to high-charge (2.5nC) operation of the gun. For these operation modes beam dynamics simulations are resulting in boundary conditions for the beam instrumentation. Proven and mature technology is projected wherever possible, for example for current and beam position monitoring. The layout of the beam profile and emittance measurement systems is described. For the bunch length, which varies be...

Muon Colliders: the Ultimate Neutrino Beamlines

International Nuclear Information System (INIS)

King, Bruce J.

1999-01-01

It is shown that muon decays in straight sections of muon collider rings will naturally produce highly collimated neutrino beams that can be several orders of magnitude stronger than the beams at existing accelerators. We discuss possible experimental setups and give a very brief overview of the physics potential from such beamlines. Formulae are given for the neutrino event rates at both short and long baseline neutrino experiments in these beams

Nomenclature of SLC Arc beamline components

International Nuclear Information System (INIS)

Silva, J.; Weng, W.T.

1986-01-01

This note defines I and C formal names for beamline components in the Arc as specified in the TRANSPORT decks ARCN FINAL and ARCS FINAL of June 5, 1985. The formal name consists of three fields: the primary name, the zone and the unit number. The general principles and guidelines are explained in Reference 1. The rationale and the final resolutions of the naming conventions for the Arc are explained

The facts on file dictionary of environmental science

Energy Technology Data Exchange (ETDEWEB)

Stevenson, L.H.; Wyman, B. (eds.)

1991-01-01

More than 3000 entries of terms related to environmental science are included in this volume. The terms are defined in words meant to be understood by the nonexpert, for use in reporting to the general public. Definitions are one to two sentences in length and are accurate without being highly technical. The Appendix lists over 500 commonly used environmental science acronyms and abbreviations as well as a table of standard human factors.

Toyota beamline (BL33XU) at SPring-8

Energy Technology Data Exchange (ETDEWEB)

Nonaka, T., E-mail: nonaka@mosk.tytlabs.co.jp; Dohmae, K.; Hayashi, Y.; Yamaguchi, S.; Nagai, Y.; Hirose, Y. [Toyota Central R& D Labs., Inc., 41-1 Nagakute Aichi 480-1192 Japan (Japan); Araki, T. [Diamond Light Source, Harwell Science and Innovation Campus, Didcot, Oxfordshire OX11 0DE UK (United Kingdom); Tanaka, T.; Kitamura, H. [RIKEN Harima Institute 1-1-1 Koto Sayo, Hyogo 679-5148 (Japan); Uruga, T.; Yamazaki, H.; Yumoto, H.; Ohashi, H.; Goto, S. [JASRI/SPring-8 1-1-1 Koto Sayo, Hyogo 679-5148 (Japan)

2016-07-27

The Toyota beamline (BL33XU) at SPring-8 is an undulator beamline developed to assist in the study of various automotive-related materials. The light source is a tapered in-vacuum undulator that provides a variable energy band width as well as a high brilliance X-ray beam. Two different optical arrangements are available: Optics 1 and Optics 2. Optics 1 is dedicated to time-resolved X-ray absorption spectroscopy (XAFS), and consists of two channel-cut crystal monochromators and four water-cooled flat Si mirrors. The Si(111) and Si(220) monochromator crystals cover an energy range of 4.0–46.0 keV and are driven by high-speed AC servo motors. These monochromators, in conjunction with the tapered undulator, enable high-quality XAFS data acquisition with a temporal resolution of 10 ms. Optics 2 is optimized for X-ray diffraction, scattering and imaging and includes a recently installed double crystal monochromator, two water-cooled flat Si mirrors and Kirkpatrick-Baez (KB) focusing mirrors. The monochromator incorporates parallel mounted Si(111) and Si(311) crystals and covers an energy range of 4.5–70 keV. The beamline provides two experimental stations: Exp. Hutch 2 and Exp. Hutch 3. The gas supply system and mass spectrometers installed in Exp. Hutch 2 allow in-operando measurements under various atmospheres. The scanning three-dimensional X-ray diffraction (scanning 3DXRD) microscopy instrumentation developed and installed in Exp. Hutch 3 enables non-destructive orientation and stress mapping of 1 mm-thick steel specimens using a high energy microbeam.

Toyota beamline (BL33XU) at SPring-8

International Nuclear Information System (INIS)

Nonaka, T.; Dohmae, K.; Hayashi, Y.; Yamaguchi, S.; Nagai, Y.; Hirose, Y.; Araki, T.; Tanaka, T.; Kitamura, H.; Uruga, T.; Yamazaki, H.; Yumoto, H.; Ohashi, H.; Goto, S.

2016-01-01

The Toyota beamline (BL33XU) at SPring-8 is an undulator beamline developed to assist in the study of various automotive-related materials. The light source is a tapered in-vacuum undulator that provides a variable energy band width as well as a high brilliance X-ray beam. Two different optical arrangements are available: Optics 1 and Optics 2. Optics 1 is dedicated to time-resolved X-ray absorption spectroscopy (XAFS), and consists of two channel-cut crystal monochromators and four water-cooled flat Si mirrors. The Si(111) and Si(220) monochromator crystals cover an energy range of 4.0–46.0 keV and are driven by high-speed AC servo motors. These monochromators, in conjunction with the tapered undulator, enable high-quality XAFS data acquisition with a temporal resolution of 10 ms. Optics 2 is optimized for X-ray diffraction, scattering and imaging and includes a recently installed double crystal monochromator, two water-cooled flat Si mirrors and Kirkpatrick-Baez (KB) focusing mirrors. The monochromator incorporates parallel mounted Si(111) and Si(311) crystals and covers an energy range of 4.5–70 keV. The beamline provides two experimental stations: Exp. Hutch 2 and Exp. Hutch 3. The gas supply system and mass spectrometers installed in Exp. Hutch 2 allow in-operando measurements under various atmospheres. The scanning three-dimensional X-ray diffraction (scanning 3DXRD) microscopy instrumentation developed and installed in Exp. Hutch 3 enables non-destructive orientation and stress mapping of 1 mm-thick steel specimens using a high energy microbeam.

A beamline systems model for Accelerator-Driven Transmutation Technology (ADTT) facilities

Energy Technology Data Exchange (ETDEWEB)

Todd, A.M.M.; Paulson, C.C.; Peacock, M.A. [Grumman Research and Development Center, Princeton, NJ (United States)] [and others

1995-10-01

A beamline systems code, that is being developed for Accelerator-Driven Transmutation Technology (ADTT) facility trade studies, is described. The overall program is a joint Grumman, G.H. Gillespie Associates (GHGA) and Los Alamos National Laboratory effort. The GHGA Accelerator Systems Model (ASM) has been adopted as the framework on which this effort is based. Relevant accelerator and beam transport models from earlier Grumman systems codes are being adapted to this framework. Preliminary physics and engineering models for each ADTT beamline component have been constructed. Examples noted include a Bridge Coupled Drift Tube Linac (BCDTL) and the accelerator thermal system. A decision has been made to confine the ASM framework principally to beamline modeling, while detailed target/blanket, balance-of-plant and facility costing analysis will be performed externally. An interfacing external balance-of-plant and facility costing model, which will permit the performance of iterative facility trade studies, is under separate development. An ABC (Accelerator Based Conversion) example is used to highlight the present models and capabilities.

X-ray optics simulation and beamline design for the APS upgrade

Science.gov (United States)

Shi, Xianbo; Reininger, Ruben; Harder, Ross; Haeffner, Dean

2017-08-01

The upgrade of the Advanced Photon Source (APS) to a Multi-Bend Achromat (MBA) will increase the brightness of the APS by between two and three orders of magnitude. The APS upgrade (APS-U) project includes a list of feature beamlines that will take full advantage of the new machine. Many of the existing beamlines will be also upgraded to profit from this significant machine enhancement. Optics simulations are essential in the design and optimization of these new and existing beamlines. In this contribution, the simulation tools used and developed at APS, ranging from analytical to numerical methods, are summarized. Three general optical layouts are compared in terms of their coherence control and focusing capabilities. The concept of zoom optics, where two sets of focusing elements (e.g., CRLs and KB mirrors) are used to provide variable beam sizes at a fixed focal plane, is optimized analytically. The effects of figure errors on the vertical spot size and on the local coherence along the vertical direction of the optimized design are investigated.

A beamline systems model for Accelerator-Driven Transmutation Technology (ADTT) facilities

International Nuclear Information System (INIS)

Todd, Alan M. M.; Paulson, C. C.; Peacock, M. A.; Reusch, M. F.

1995-01-01

A beamline systems code, that is being developed for Accelerator-Driven Transmutation Technology (ADTT) facility trade studies, is described. The overall program is a joint Grumman, G. H. Gillespie Associates (GHGA) and Los Alamos National Laboratory effort. The GHGA Accelerator Systems Model (ASM) has been adopted as the framework on which this effort is based. Relevant accelerator and beam transport models from earlier Grumman systems codes are being adapted to this framework. Preliminary physics and engineering models for each ADTT beamline component have been constructed. Examples noted include a Bridge Coupled Drift Tube Linac (BCDTL) and the accelerator thermal system. A decision has been made to confine the ASM framework principally to beamline modeling, while detailed target/blanket, balance-of-plant and facility costing analysis will be performed externally. An interfacing external balance-of-plant and facility costing model, which will permit the performance of iterative facility trade studies, is under separate development. An ABC (Accelerator Based Conversion) example is used to highlight the present models and capabilities

78 FR 42968 - National Institute of Environmental Health Sciences; Notice of Closed Meeting

Science.gov (United States)

2013-07-18

... Environmental Health Sciences; Notice of Closed Meeting Pursuant to section 10(d) of the Federal Advisory... Environmental Health Sciences, Building 101, Rodbell Auditorium, 111 T. W. Alexander Drive, Research Triangle... the Environmental Health Sciences; 93.113, Biological Response to Environmental Health Hazards; 93.114...

76 FR 46823 - National Institute of Environmental Health Sciences; Notice of Meeting

Science.gov (United States)

2011-08-03

... Environmental Health Sciences; Notice of Meeting Pursuant to section 10(d) of the Federal Advisory Committee Act... Environmental Health Sciences Council. The meeting will be open to the public as indicated below, with...: Discussion of program policies and issues. Place: Nat. Inst. of Environmental Health Sciences, Building 101...

76 FR 7225 - National Institute of Environmental Health Sciences; Notice of Meetings

Science.gov (United States)

2011-02-09

... Environmental Health Sciences; Notice of Meetings Pursuant to section 10(a) of the Federal Advisory Committee..., National Institute of Environmental Health Sciences, 615 Davis Dr., KEY615/3112, Research Triangle Park, NC..., National Institute of Environmental Health Sciences, 615 Davis Dr., KEY615/3112, Research Triangle Park, NC...

76 FR 71046 - National Institute of Environmental Health Sciences; Notice of Meeting

Science.gov (United States)

2011-11-16

... Environmental Health Sciences; Notice of Meeting Pursuant to section 10(a) of the Federal Advisory Committee Act... Environmental Health Sciences, National Institutes of Health, 615 Davis Dr., KEY615/3112, Research Triangle Park... and Education; 93.894, Resources and Manpower Development in the Environmental Health Sciences; 93.113...

77 FR 3480 - National Institute of Environmental Health Sciences Notice of Meeting

Science.gov (United States)

2012-01-24

... Environmental Health Sciences Notice of Meeting Pursuant to section 10(d) of the Federal Advisory Committee Act... Environmental Health Sciences Council. The meeting will be open to the public as indicated below, with...: Discussion of program policies and issues. Place: Nat. Inst. of Environmental Health Sciences, Building 101...

Social Cognitive Predictors of Interest in Environmental Science: Recommendations for Environmental Educators

Science.gov (United States)

Quimby, Julie L.; Seyala, Nazar D.; Wolfson, Jane L.

2007-01-01

The authors examined the influence of social cognitive variables on students' interest in environmental science careers and investigated differences between White and ethnic minority students on several career-related variables. The sample consisted of 161 undergraduate science majors (124 White students, 37 ethnic minority students). Results of…

Making the Connection between Environmental Science and Decision Making

Science.gov (United States)

Woodhouse, C. A.; Crimmins, M.; Ferguson, D. B.; Garfin, G. M.; Scott, C. A.

2011-12-01

As society is confronted with population growth, limited resources, and the impacts of climate variability and change, it is vital that institutions of higher education promote the development of professionals who can work with decision-makers to incorporate scientific information into environmental planning and management. Skills for the communication of science are essential, but equally important is the ability to understand decision-making contexts and engage with resource managers and policy makers. It is increasingly being recognized that people who understand the linkages between science and decision making are crucial if science is to better support planning and policy. A new graduate-level seminar, "Making the Connection between Environmental Science and Decision Making," is a core course for a new post-baccalaureate certificate program, Connecting Environmental Science and Decision Making at the University of Arizona. The goal of the course is to provide students with a basic understanding of the dynamics between scientists and decision makers that result in scientific information being incorporated into environmental planning, policy, and management decisions. Through readings from the environmental and social sciences, policy, and planning literature, the course explores concepts including scientific information supply and demand, boundary organizations, co-production of knowledge, platforms for engagement, and knowledge networks. Visiting speakers help students understand some of the challenges of incorporating scientific information into planning and decision making within institutional and political contexts. The course also includes practical aspects of two-way communication via written, oral, and graphical presentations as well as through the interview process to facilitate the transfer of scientific information to decision makers as well as to broader audiences. We aspire to help students develop techniques that improve communication and

General design of the layout for new undulator-only beamline front ends

International Nuclear Information System (INIS)

Shu Deming; Ramanathan, Mohan; Kuzay, Tuncer M.

2001-01-01

A great majority of the Advanced Photon Source (APS) users have chosen an undulator as the only source for their insertion device beamline. Compared with a wiggler source, the undulator source has a much smaller horizontal divergence, providing us with an opportunity to optimize the beamline front-end design further. In this paper, the particular designs and specifications, as well as the optical and bremsstrahlung ray-tracing analysis of the new APS front ends for undulator-only operation are presented

Conceptual design of NBI beamline for VEST plasma heating

Energy Technology Data Exchange (ETDEWEB)

Kim, T.S., E-mail: tskim@kaeri.re.kr; In, S.R.; Jeong, S.H.; Park, M.; Chang, D.H.; Jung, B.K.; Lee, K.W.

2016-11-01

Highlights: • VEST NBI injector is conceptually designed to support further VEST plasma experiment. • VEST NBI injector composed of 2 sets of 20 keV/25A magnetic cusp type bucket ion source, neutralizer ducts, electrostatic ion dumps, NB vessel with cryopump, and rotating calorimerter. • The vacuum vessel of the beamline is divided into two parts for high injection efficiency and different direction (co- and counter-current) of neutral beam injection. • An ion source for the VEST NBI system was also designed to deliver neutral hydrogen beams with a power of 0.3 MW. The plasma generator of the VEST NB ion source has modified TFTR bucket multi-cusp chamber. The plasma generator has twelve hair-pin shaped tungsten filaments used as a cathode and an arc chamber including a bucket and an electron dump which serve as anode. The accelerator system consists of three grids, each having extraction area of 100 mm × 320 mm and 64 shaped slits of 3 mm spacing. • The preliminary structure design and the layout of the main components of the injector have been completed. Simulation and calculation for optimization of the NB beamline design results prove that the parameters of ion source, neutralization efficiency (76%:95% equilibrium neutralization efficiency), and beam power transmission efficiency (higher than 90%) are in agreement with design targets of the VEST NB beamline. • This VEST NBI system will provide a neutral beam of ∼0.6 MW for both heating and current drive in torus plasma. - Abstract: A 10 m s-pulsed NBI (Neutral Beam Injection) system for VEST (Versatile Experiment Spherical Torus) plasma heating is designed to provide a beam power of more than 0.6 MW with 20 keV H° neutrals. The VEST NBI injector is composed of 2 sets of 20 keV/25A magnetic cusp type bucket ion source, neutralizer ducts, residual ion dump, NB vessel with a cryopump, and rotating calorimeter. The position and size of these beamline components are roughly determined with geometric

Conceptual design of NBI beamline for VEST plasma heating

International Nuclear Information System (INIS)

Kim, T.S.; In, S.R.; Jeong, S.H.; Park, M.; Chang, D.H.; Jung, B.K.; Lee, K.W.

2016-01-01

Highlights: • VEST NBI injector is conceptually designed to support further VEST plasma experiment. • VEST NBI injector composed of 2 sets of 20 keV/25A magnetic cusp type bucket ion source, neutralizer ducts, electrostatic ion dumps, NB vessel with cryopump, and rotating calorimerter. • The vacuum vessel of the beamline is divided into two parts for high injection efficiency and different direction (co- and counter-current) of neutral beam injection. • An ion source for the VEST NBI system was also designed to deliver neutral hydrogen beams with a power of 0.3 MW. The plasma generator of the VEST NB ion source has modified TFTR bucket multi-cusp chamber. The plasma generator has twelve hair-pin shaped tungsten filaments used as a cathode and an arc chamber including a bucket and an electron dump which serve as anode. The accelerator system consists of three grids, each having extraction area of 100 mm × 320 mm and 64 shaped slits of 3 mm spacing. • The preliminary structure design and the layout of the main components of the injector have been completed. Simulation and calculation for optimization of the NB beamline design results prove that the parameters of ion source, neutralization efficiency (76%:95% equilibrium neutralization efficiency), and beam power transmission efficiency (higher than 90%) are in agreement with design targets of the VEST NB beamline. • This VEST NBI system will provide a neutral beam of ∼0.6 MW for both heating and current drive in torus plasma. - Abstract: A 10 m s-pulsed NBI (Neutral Beam Injection) system for VEST (Versatile Experiment Spherical Torus) plasma heating is designed to provide a beam power of more than 0.6 MW with 20 keV H° neutrals. The VEST NBI injector is composed of 2 sets of 20 keV/25A magnetic cusp type bucket ion source, neutralizer ducts, residual ion dump, NB vessel with a cryopump, and rotating calorimeter. The position and size of these beamline components are roughly determined with geometric

78 FR 8156 - National Institute of Environmental Health Sciences; Notice of Closed Meeting

Science.gov (United States)

2013-02-05

... Environmental Health Sciences; Notice of Closed Meeting Pursuant to section 10(d) of the Federal Advisory... Environmental Health Sciences Special Emphasis Panel; Studies of Environmental Agents to Induce Immunotoxicity... Research and Training, Nat. Institute of Environmental Health Sciences, P.O. Box 12233, MD EC-30, Research...

76 FR 13650 - National Institute of Environmental Health Sciences; Notice of Closed Meetings

Science.gov (United States)

2011-03-14

... Environmental Health Sciences; Notice of Closed Meetings Pursuant to section 10(d) of the Federal Advisory... Training, Nat. Institute of Environmental Health Sciences, P.O. Box 12233, MD EC-30/Room 3171, Research... Environmental Health Sciences Special Emphasis Panel; Review of Educational Grants with an Environmental Health...

77 FR 40076 - National Institute of Environmental Health Sciences; Notice of Closed Meeting

Science.gov (United States)

2012-07-06

... Environmental Health Sciences; Notice of Closed Meeting Pursuant to section 10(d) of the Federal Advisory... Environmental Health Sciences, P.O. Box 12233, MD EC-30 Research Triangle Park, NC 27709, (919) 541- 0752... Manpower Development in the Environmental Health Sciences; 93.113, Biological Response to Environmental...

12 Experimental Techniques at Synchrotron Lightsource Beamlines

Energy Technology Data Exchange (ETDEWEB)

Lee, Peter L [US Department of Energy Office of Science Office Basic Energy Sciences; Rhyne, James J [US Department of Energy Office of Science Office of Basic Energy Sciences

2015-01-01

The unique properties of synchrotron radiation are its continuous spectrum, high flux and brightness, and high coherence, which make it an indispensable tool in the exploration of matter. The wavelengths of the emitted photons span a range of dimensions from the atomic level to biological cells, thereby providing incisive probes for advanced research in materials science, physical and chemical sciences, metrology, geosciences, environmental sciences, biosciences, medical sciences, and pharmaceutical sciences. The features of synchrotron radiation are especially well matched to the needs of nanoscience.

Incorporating Geographic Information Science in the BSc Environ-mental Science Program in Botswana

Science.gov (United States)

Akinyemi, Felicia O.

2018-05-01

Critical human capacity in Geographic Information Science (GISc) is developed at the Botswana International University of Science and Technology, a specialized, research university. Strategies employed include GISc courses offered each semester to students from various programs, the conduct of field-based projects, enrolment in online courses, geo-spatial initiatives with external partners, and final year research projects utilizing geospatial technologies. A review is made of available GISc courses embedded in the Bachelor of Science Environmental Science program. GISc courses are incorporated in three Bachelor degree programs as distinct courses. Geospatial technologies are employed in several other courses. Student researches apply GIS and Remote Sensing methods to environmental and geological themes. The overarching goals are to equip students in various disciplines to utilize geospatial technologies, and enhance their spatial thinking and reasoning skills.

APS Science 2007.

Energy Technology Data Exchange (ETDEWEB)

2008-05-30

This report provides research highlights from the Advanced Photon Source (APS). Although these highlights represent less than 10% of the published work from the APS in 2007, they give a flavor of the diversity and impact of user research at the facility. In the strategic planning the aim is to foster the growth of existing user communities and foresee new areas of research. This coming year finds the APS engaged in putting together, along with the users, a blueprint for the next five years, and making the case for a set of prioritized investments in beamlines, the accelerator, and infrastructure, each of which will be transformational in terms of scientific impact. As this is written plans are being formulated for an important user workshop on October 20-21, 2008, to prioritize strategic plans. The fruit from past investments can be seen in this report. Examples include the creation of a dedicated beamline for x-ray photon correlation spectroscopy at Sector 8, the evolution of dedicated high-energy x-ray scattering beamlines at sectors 1 and 11, a dedicated imaging beamline at Sector 32, and new beamlines for inelastic scattering and powder diffraction. A single-pulse facility has been built in collaboration with Sector 14 (BioCARS) and Phil Anfinrud at the National Institutes of Health, which will offer exceptionally high flux for single-pulse diffraction. The nanoprobe at Sector 26, built and operated jointly by the Argonne Center for Nanoscale Materials and the X-ray Operations and Research (XOR) section of the APS X-ray Science Division, has come on line to define the state of the art in nanoscience.

APS Science 2007

International Nuclear Information System (INIS)

2008-01-01

This report provides research highlights from the Advanced Photon Source (APS). Although these highlights represent less than 10% of the published work from the APS in 2007, they give a flavor of the diversity and impact of user research at the facility. In the strategic planning the aim is to foster the growth of existing user communities and foresee new areas of research. This coming year finds the APS engaged in putting together, along with the users, a blueprint for the next five years, and making the case for a set of prioritized investments in beamlines, the accelerator, and infrastructure, each of which will be transformational in terms of scientific impact. As this is written plans are being formulated for an important user workshop on October 20-21, 2008, to prioritize strategic plans. The fruit from past investments can be seen in this report. Examples include the creation of a dedicated beamline for x-ray photon correlation spectroscopy at Sector 8, the evolution of dedicated high-energy x-ray scattering beamlines at sectors 1 and 11, a dedicated imaging beamline at Sector 32, and new beamlines for inelastic scattering and powder diffraction. A single-pulse facility has been built in collaboration with Sector 14 (BioCARS) and Phil Anfinrud at the National Institutes of Health, which will offer exceptionally high flux for single-pulse diffraction. The nanoprobe at Sector 26, built and operated jointly by the Argonne Center for Nanoscale Materials and the X-ray Operations and Research (XOR) section of the APS X-ray Science Division, has come on line to define the state of the art in nanoscience

Environmental Science Program at the Advanced Light Source

Energy Technology Data Exchange (ETDEWEB)

Hubbard, Susan; Shuh, David; Nico, Peter

2005-06-01

Synchrotron Radiation (SR)-based techniques have become an essential and fundamental research tool in Molecular Environmental Science (MES) research. MES is an emerging scientific field that has largely evolved from research interactions at the U.S. Department of Energy (U.S. DOE) SR laboratories in response to the pressing need for understanding fundamental molecular-level chemical and biological processes that involve the speciation, properties, and behavior of contaminants, within natural systems. The role of SR-based investigations in MES and their impact on environmental problems of importance to society has been recently documented in Molecular Environmental Science: An Assessment of Research Accomplishment, Available Synchrotron Radiation Facilities, and Needs (EnviroSync, 2003).

75 FR 45133 - National Institute of Environmental Health Sciences; Notice of Closed Meeting

Science.gov (United States)

2010-08-02

... Environmental Health Sciences; Notice of Closed Meeting Pursuant to section 10(d) of the Federal Advisory.... Institute of Environmental Health Science, P.O. Box 12233, MD EC-30/Room 3170 B, Research Triangle Park, NC... Manpower Development in the Environmental Health Sciences; 93.113, Biological Response to Environmental...

TOF technique for laser-driven proton beam diagnostics for the ELIMED beamline

International Nuclear Information System (INIS)

Milluzzo, G.; Scuderi, V.; Amico, A.G.; Cirrone, G.A.P.; Cuttone, G.; Larosa, G.; Leanza, R.; Petringa, G.; Pipek, J.; Romano, F.; Napoli, M. De; Dostal, J.; Margarone, D.; Schillaci, F.; Velyhan, A.

2017-01-01

The Time of Flight (TOF) method for laser-driven ion beam diagnostics has been extensively investigated so far for low energy ion diagnostics and several works, reported in literature [1,2], have shown its efficiency in the measurement of particle beam characteristics such as ion species, energy spectrum and current. Moreover, such technique allows obtaining a shot-to-shot on-line monitoring of optically accelerated particles, necessary to control the reproducibility of the accelerated beam and to deliver a beam suitable for any kind of applications. For this reason, the ELIMED beamline [3,4], which will be entirely developed at INFN-LNS and installed in 2017 within the ion beamline ELIMAIA (ELI Multidisciplinary Applications of laser-Ion Acceleration) experimental hall at ELI-Beamlines in Prague, will be equipped with an on-line diagnostics system composed by silicon carbide and diamond detectors, using the TOF technique. In this contribution, the procedure developed for TOF signal analysis will be briefly reported.

Blade-type X-ray beam position monitors for SPring-8 undulator beamlines

CERN Document Server

Aoyagi, H; Kitamura, H

2001-01-01

The X-ray beam position monitors had been designed and installed for SPring-8 insertion device beamlines. These monitors are being utilized for photon beam diagnostics. The beam from the standard undulator in SPring-8 has the total power of 11 kW and the power density of 470 kW/mrad sup 2 , typically. Each monitor has four CVD diamond blades coated with metal for detector heads. We have already introduced three styles of monitors to match various insertion devices in SPring-8. A standard style, or a fixed-blade style, is used mainly for a standard in-vacuum undulator beamlines. A horizontal-blade-drive style and a four-blade-drive style are used for beamlines of a wiggler and a twin helical undulator that have wide power distributions, and for figure-8 undulators that have asymmetric power distributions, respectively. This report describes the design and the structure of these monitors and the beam-tests for the photon beam diagnostics in detail.

Quantitative SRXRF analysis on the BL15U1 beamline at SSRF

International Nuclear Information System (INIS)

Zhang Yanle; Yu Xiaohan

2010-01-01

In this paper, we give an introduction first to two quantification methods for synchrotron radiation X-ray fluorescence analysis (SRXRF), namely fundamental parameters method and Monte-Carlo simulation method, for their application on the BL15U1 beamline (hard X-ray microprobe) at SSRF (Shanghai Synchrotron Radiation Facility). Effectiveness of the two methods is demonstrated and the XRF detection limits of the BL15U1 beamline are calculated. The results show that, quantitative analysis at the ppm level can be done using the two methods, with an accuracy of better than 10%. Although both the methods are valid for the SRXRF data analysis,the Monte Carlo method gives better analysis result, as it compares the simulated spectrum with the experiment spectrum, and this helps the determination of experiment parameters and thus minimizes the error caused by incorrect parameters. Finally, the detection limits shows that the BL15U1 beamline is capable of carrying out standard-of-the-art XRF experiment. (authors)

Calibration and standards beamline 6.3.2 at the ALS

International Nuclear Information System (INIS)

Underwood, J.H.; Gullikson, E.M.; Koike, M.

1997-01-01

More sophisticated optics for the x-ray, soft x-ray and far ultraviolet spectral regions being developed for synchrotron radiation research and many other applications, require accurate calibration and standards facilities for measuring reflectivity of mirrors and multilayer coatings, transmission of thin films, bandpass of multilayers, efficiency of gratings or detectors, etc. For this purpose beamline 6.3.2 was built at the ALS. Its energy coverage, versatility, simplicity and convenience also make it useful for a wide range of other experiments. The paper describes the components of this beamline, consisting of: a four jaw aperture; a horizontal focusing mirror; a monochromator; exit slit; vertical focusing mirror; mechanical and vacuum system; reflectometer; filter wheels; and data acquisition system

Calibration and standards beamline 6.3.2 at the ALS

Energy Technology Data Exchange (ETDEWEB)

Underwood, J.H.; Gullikson, E.M.; Koike, M. [Ernest Orlando Lawrence Berkeley National Lab., CA (United States)] [and others

1997-04-01

More sophisticated optics for the x-ray, soft x-ray and far ultraviolet spectral regions being developed for synchrotron radiation research and many other applications, require accurate calibration and standards facilities for measuring reflectivity of mirrors and multilayer coatings, transmission of thin films, bandpass of multilayers, efficiency of gratings or detectors, etc. For this purpose beamline 6.3.2 was built at the ALS. Its energy coverage, versatility, simplicity and convenience also make it useful for a wide range of other experiments. The paper describes the components of this beamline, consisting of: a four jaw aperture; a horizontal focusing mirror; a monochromator; exit slit; vertical focusing mirror; mechanical and vacuum system; reflectometer; filter wheels; and data acquisition system.

Bremsstrahlung scattering calculations for the beam stops and collimators in the APS insertion-device beamlines

International Nuclear Information System (INIS)

Job, P.K.; Haeffner, D.R.; Shu, D.

1994-12-01

Bremsstrahlung is produced in the APS storage ring by the interaction of positrons with the residual gas molecules in the vacuum chamber of the storage ring. The bremsstrahlung production causes a serious challenge in shielding the insertion-device beamlines because the entire straight section (15 meters) is in the line of sight of the beamline. The radiation emerges in a narrow cone tangential to the beam path with the characteristic emission angle 1/γ, where γ is E/mc 2 which is the ratio of the kinetic energy to the rest mass for the positrons. This high-energy gamma radiation has an approximate 1/E spectrum with the maximum energy extending up to the particle energy (7 GeV for the APS). Bremsstrahlung, being high-energy photons, produces an electromagnetic shower when it encounters the beamline elements. A beamline element not thick enough to fully contain an electromagnetic shower can cause considerable scatter of the high-energy bremsstrahlung radiation. The low-energy component of the bremsstrahlung can also be scattered and create high dose rates in the first-optical and white-beam enclosures. The fully developed electromagnetic shower will have a photon spectrum almost independent of the material. The electromagnetic showers in the high-Z materials can also produce photoneutrons. This note reports the summary of EGS4 calculations performed on bremsstrahlung scattering from different beamline components in a typical APS insertion-device beamline. The related recommendations for shielding are also given. The shielding criterion adopted is a total dose rate of 2.5μSv/h (0.25 mrem/h) at 30 cm from the shield

Aladdin: Transforming science at SRC

Science.gov (United States)

Bisognano, J.; Bissen, M.; Green, M.; Jacobs, K.; Moore, C.; Olson, E.; Severson, M.; Wehlitz, R.

2011-09-01

The Synchrotron Radiation Center (SRC) is dedicated to enabling of innovative research using IR, ultraviolet, and soft X-ray synchrotron radiation. It delivers beam time with high reliability (99%) and continues to improve the Aladdin storage ring complex. A lower emittance tuning has been commissioned to support a microfocus capability. SRC successfully installed an APPLE II undulator providing elliptically polarized light with lattice compensation for flexible scanning. Installation of a new IR beamline at SRC is providing synchrotron chemical imaging with unprecedented structural and chemical information, simultaneously. In addition, SRC has established a strong education and outreach program to bring the knowledge and power of light source science to a wider national community. It is moving forward into the future by developing a new micro focus beamline producing a diffraction-limited focus of about 500 nm at 22 eV, proposing an additional diffraction-limited chemical imaging beamline, and advancing the Wisconsin Free Electron Laser (WiFEL) concept.

Aladdin: Transforming science at SRC

International Nuclear Information System (INIS)

Bisognano, J.; Bissen, M.; Green, M.; Jacobs, K.; Moore, C.; Olson, E.; Severson, M.; Wehlitz, R.

2011-01-01

The Synchrotron Radiation Center (SRC) is dedicated to enabling of innovative research using IR, ultraviolet, and soft X-ray synchrotron radiation. It delivers beam time with high reliability (99%) and continues to improve the Aladdin storage ring complex. A lower emittance tuning has been commissioned to support a microfocus capability. SRC successfully installed an APPLE II undulator providing elliptically polarized light with lattice compensation for flexible scanning. Installation of a new IR beamline at SRC is providing synchrotron chemical imaging with unprecedented structural and chemical information, simultaneously. In addition, SRC has established a strong education and outreach program to bring the knowledge and power of light source science to a wider national community. It is moving forward into the future by developing a new micro focus beamline producing a diffraction-limited focus of about 500 nm at 22 eV, proposing an additional diffraction-limited chemical imaging beamline, and advancing the Wisconsin Free Electron Laser (WiFEL) concept.

CAT-ACT—A new highly versatile x-ray spectroscopy beamline for catalysis and radionuclide science at the KIT synchrotron light facility ANKA

Science.gov (United States)

Zimina, A.; Dardenne, K.; Denecke, M. A.; Doronkin, D. E.; Huttel, E.; Lichtenberg, H.; Mangold, S.; Pruessmann, T.; Rothe, J.; Spangenberg, Th.; Steininger, R.; Vitova, T.; Geckeis, H.; Grunwaldt, J.-D.

2017-11-01

CAT-ACT—the hard X-ray beamline for CATalysis and ACTinide/radionuclide research at the KIT synchrotron radiation facility ANKA—is dedicated to X-ray spectroscopy, including "flux hungry" photon-in/photon-out and correlative techniques and combines state-of-the-art optics with a unique infrastructure for radionuclide and catalysis research. Measurements can be performed at photon energies varying between 3.4 keV and 55 keV, thus encompassing the actinide M- and L-edge or potassium K-edge up to the K-edges of the lanthanide series such as cerium. Well-established X-ray absorption fine structure spectroscopy in transmission and fluorescence detection modes is available in combination with high energy-resolution X-ray emission spectroscopy or X-ray diffraction techniques. The modular beamline design with two alternately operated in-line experimental stations enables sufficient flexibility to adapt sample environments and detection systems to many scientific challenges. The ACT experimental station focuses on various aspects of nuclear waste disposal within the mission of the Helmholtz association to contribute to the solution of one of the greatest scientific and social challenges of our time—the safe disposal of heat producing, highly radioactive waste forms from nuclear energy production. It augments present capabilities at the INE-Beamline by increasing the flux and extending the energy range into the hard X-ray regime. The CAT experimental station focuses on catalytic materials, e.g., for energy-related and exhaust gas catalysis. Characterization of catalytically active materials under realistic reaction conditions and the development of in situ and operando cells for sample environments close to industrial reactors are essential aspects at CAT.

Order Theory in Environmental Sciences

DEFF Research Database (Denmark)

Sørensen, P. B.; Brüggemann, R.; Lerche, D. B.

This is the proceeding from the fifth workshop in Order Theory in Environ-mental Science. In this workshop series the concept of Partial Order Theory is development in relation to application and the use is tested based on specific problems. The Partial Order Theory will have a potential use...

Environmental Sciences Division annual progress report for period ending September 30, 1982. Environmental Sciences Division Publication No. 2090

International Nuclear Information System (INIS)

1983-04-01

Separate abstracts were prepared for 12 of the 14 sections of the Environmental Sciences Division annual progress report. The other 2 sections deal with educational activities. The programs discussed deal with advanced fuel energy, toxic substances, environmental impacts of various energy technologies, biomass, low-level radioactive waste management, the global carbon cycle, and aquatic and terrestrial ecology

Thermal, structural, and fabrication aspects of diamond windows for high power synchrotron x-ray beamlines

International Nuclear Information System (INIS)

Khounsary, A.M.; Phillips, W.

1992-01-01

Recent advances in chemical vapor deposition (CVD) technology have made it possible to produce thin free-standing diamond foils that can be used as the window material in high heat load, synchrotron beamlines. Numerical simulations suggest that these windows can offer an attractive and at times the only altemative to beryllium windows for use in third generation x-ray synchrotron radiation beamlines. Utilization, design, and fabrication aspects of diamond windows for high heat load x-ray beamlines are discussed, as are the microstructure characteristics bearing on diamond's performance in this role. Analytic and numerical results are also presented to provide a basis for the design and testing of such windows

The first synchrotron infrared beamlines at the Advanced Light Source: Microspectroscopy and fast timing

International Nuclear Information System (INIS)

Martin, M.C.; McKinney, W.R.

1998-05-01

A set of new infrared (IR) beamlines on the 1.4 bending magnet port at the Advanced Light Source, LBNL, are described. Using a synchrotron as an IR source provides considerable brightness advantages, which manifests itself most beneficially when performing spectroscopy on a microscopic length scale. Beamline (BL) 1.4.3 is a dedicated microspectroscopy beamline, where the much smaller focused spot size using the synchrotron source is utilized. This enables an entirely new set of experiments to be performed where spectroscopy on a truly microscopic scale is now possible. BL 1.4.2 consists of a vacuum FTIR bench with a wide spectral range and step-scan capabilities. The fast timing is demonstrated by observing the synchrotron electron storage pattern at the ALS

77 FR 33472 - National Institute of Environmental Health Sciences; Notice of Closed Meeting

Science.gov (United States)

2012-06-06

... Environmental Health Sciences; Notice of Closed Meeting Pursuant to section 10(d) of the Federal Advisory... Health Sciences Special Emphasis Panel International Collaborations in Environmental Health. Date: June....D., Scientific Review Administrator, Nat. Institute of Environmental Health Sciences, Office of...

78 FR 14562 - National Institute of Environmental Health Sciences; Notice of Closed Meeting

Science.gov (United States)

2013-03-06

... Environmental Health Sciences; Notice of Closed Meeting Pursuant to section 10(d) of the Federal Advisory... Health Sciences Special Emphasis Panel; Studies on Environmental Health Concerns from Superstorm Sandy... Administrator, National Institute of Environmental Health Sciences, Office of Program Operations, Scientific...

76 FR 59147 - National Institute of Environmental Health Sciences Notice of Meetings

Science.gov (United States)

2011-09-23

... Environmental Health Sciences Notice of Meetings Pursuant to section 10(a) of the Federal Advisory Committee Act... Development in the Environmental Health Sciences; 93.113, Biological Response to Environmental Health Hazards... Environmental Research Coordinating Committee. The meetings will be open to the public, with attendance limited...

Optical design study of the PEARL beamline at SLS

Czech Academy of Sciences Publication Activity Database

Oberta, Peter; Flechsig, U.; Muntwiler, M.; Quitmann, C.

2011-01-01

Roč. 635, č. 1 (2011), s. 116-120 ISSN 0168-9002 Institutional research plan: CEZ:AV0Z10100522 Keywords : PGM * beamline design * photo-emision Subject RIV: BH - Optics, Masers, Lasers Impact factor: 1.207, year: 2011

Opportunities for web-based indicators in environmental sciences.

Directory of Open Access Journals (Sweden)

Sergio Malcevschi

Full Text Available This paper proposes a set of web-based indicators for quantifying and ranking the relevance of terms related to key-issues in Ecology and Sustainability Science. Search engines that operate in different contexts (e.g. global, social, scientific are considered as web information carriers (WICs and are able to analyse; (i relevance on different levels: global web, individual/personal sphere, on-line news, and culture/science; (ii time trends of relevance; (iii relevance of keywords for environmental governance. For the purposes of this study, several indicators and specific indices (relational indices and dynamic indices were applied to a test-set of 24 keywords. Outputs consistently show that traditional study topics in environmental sciences such as water and air have remained the most quantitatively relevant keywords, while interest in systemic issues (i.e. ecosystem and landscape has grown over the last 20 years. Nowadays, the relevance of new concepts such as resilience and ecosystem services is increasing, but the actual ability of these concepts to influence environmental governance needs to be further studied and understood. The proposed approach, which is based on intuitive and easily replicable procedures, can support the decision-making processes related to environmental governance.

Environmental protection belongs to the public: A vision for citizen science at EPA

Science.gov (United States)

Parker, A.; Dosemagen, S.

2017-12-01

As a collaborative and open approach to science, citizen science has the potential make science more actionable, applicable, and usable, especially when designed with scientists, communities and decision-makers as partners. In response to recent interest in citizen science from the US Environmental Protection Agency, the National Advisory Council for Environmental Policy and Technology provided EPA with advice and recommendations on how to integrate citizen science into the core work of EPA. The Council's 28 members—representatives of academia; business and industry; nongovernmental organizations; and state, local and tribal governments—identifies citizen science as an invaluable opportunity for EPA to strengthen public support for EPA's mission and the best approach for the Agency to connect with the public on environmental protection. The report recommends that EPA embrace citizen science as a core tenet of environmental protection, invest in citizen science for communities, partners, and the Agency, enable the use of citizen science data at the Agency, integrate citizen science into the full range of work of EPA. This presentation will outline principles and strategy for integrating citizen science into science and policy at the national level, increasing the usability of citizen science data for decision-making and policy, and leveraging citizen science for environmental protection.

76 FR 5184 - National Institute of Environmental Health Sciences; Notice of Closed Meeting

Science.gov (United States)

2011-01-28

... Environmental Health Sciences; Notice of Closed Meeting Pursuant to section 10(d) of the Federal Advisory... Health Sciences Special Emphasis Panel; Outstanding New Environmental Scientist Award. Date: February 24... Environmental Health Sciences, Building 101, Rodbell Auditorium, 111 T. W. Alexander Drive, Research Triangle...

77 FR 61771 - National Institute of Environmental Health Sciences; Notice of Closed Meetings

Science.gov (United States)

2012-10-11

... Environmental Health Sciences; Notice of Closed Meetings Pursuant to section 10(d) of the Federal Advisory... clearly unwarranted invasion of personal privacy. Name of Committee: Environmental Health Sciences Review... applications. Place: National Institute of Environmental Health Sciences, Building 101, Rodbell Auditorium, 111...

76 FR 11500 - National Institute of Environmental Health Sciences; Notice of Closed Meetings

Science.gov (United States)

2011-03-02

... Environmental Health Sciences; Notice of Closed Meetings Pursuant to section 10(d) of the Federal Advisory... Administrator, Nat. Institute of Environmental Health Sciences, Office of Program Operations, Scientific Review... . Name of Committee: National Institute of Environmental Health Sciences Special Emphasis Panel; Novel...

Investing in citizen science can improve natural resource management and environmental protection

Science.gov (United States)

McKinley, Duncan C.; Miller-Rushing, Abraham J.; Ballard, Heidi L.; Bonney, Rick; Brown, Hutch; Evans, Daniel M.; French, Rebecca A.; Parrish, Julia K.; Phillips, Tina B.; Ryan, Sean F.; Shanley, Lea A.; Shirk, Jennifer L.; Stepenuck, Kristine F.; Weltzin, Jake F.; Wiggins, Andrea; Boyle, Owen D.; Briggs, Russell D.; Chapin, Stuart F.; Hewitt, David A.; Preuss, Peter W.; Soukup, Michael A.

2015-01-01

Citizen science has made substantive contributions to science for hundreds of years. More recently, it has contributed to many articles in peer-reviewed scientific journals and has influenced natural resource management and environmental protection decisions and policies across the nation. Over the last 10 years, citizen science—participation by the public in a scientific project—has seen explosive growth in the United States, particularly in ecology, the environmental sciences, and related fields of inquiry. In this report, we explore the current use of citizen science in natural resource and environmental science and decision making in the United States and describe the investments organizations might make to benefit from citizen science.

High resolution inner-shell spectroscopies of atoms and molecules in gas phase using the soft x-ray photochemistry beamline at SPring-8

International Nuclear Information System (INIS)

Ueda, Kiyoshi

2003-01-01

This article describes recent activities on inner-shell spectroscopies of atoms and molecules on beamline 27SU, nicknamed soft X-ray photochemistry beamline, at SPring-8, an 8-GeV synchrotron radiation facility in Japan. This beamline provides linearly polarized monochromatic soft X-rays at the resolution higher than 10,000. The end station is designed so that one can perform various kinds of excitation and de-excitation spectroscopies as well as coincidence spectroscopies. Following the description of the beamline and the end station, we present recent results for inner-shell spectroscopies on Ne, CO 2 , BF 3 , and CF 4 . Emphasis is given to illustrate the strategy of the research on this beamline and performance of the beamline and the end station. (author)

Cleaning and outgassing studies of machinable tungsten for beamline safety shutters

International Nuclear Information System (INIS)

Liu, C.; Ryding, D.; Nielsen, R.W.; Kruy, T.L.; Kuzay, T.M.

1996-01-01

Machinable tungsten blocks are used as safety shutters in the front ends and the beamlines at the Advanced Photon Source (APS). The machinable tungsten used is characterized as a UHV-compatible metal by the vendor and was developed through a joint research effort with the APS. However, because of the inherent porosity in the sintered tungsten metal, it may present a vacuum problem and has to be subjected to strict vacuum testing before it is put on the beamlines. We have chosen specially heat-treated machinable tungsten with a density of 18 g/cm 3 for safety shutters. In-house-developed, environmentally friendly vacuum cleaning procedures were used. In this paper, we present results of thermal outgassing tests for machinable tungsten safety shutter sets. Each set consists of five blocks and has a total area of 4500 cm 2 . A cleaning procedure using alkaline detergent ultrasonic washes, deionized water rinses, and a 500 degree C vacuum furnace baking was used before outgassing measurements. Outgassing rates 10 hours after initial pump down at room temperature reached ∼1.60x10 -10 Torr·l·s -1 ·cm -2 for machinable tungsten and ∼1.56x10 -10 Torr·l·s -1 ·cm -2 for the stainless steel vacuum chamber. The outgassing rate of machinable tungsten 24 hours after an in situ 48 h bake at 160 degree C is also comparable to that of the stainless steel vacuum chamber. The importance of a 500 degree C vacuum furnace baking has been confirmed by outgassing studies for machinable tungsten sets that were not subject to vacuum furnace baking. copyright 1996 American Institute of Physics

Growth of Environmental Science at the NSLS

International Nuclear Information System (INIS)

Northrup, P.; Lanzirotti, A.; Celestian, A.

2007-01-01

In the 25 years since the National Synchrotron Light Source (NSLS) began operations, synchrotron 'user facilities' have had a growing impact on research in molecular environmental science (MES). For example, synchrotron-based analytical techniques have allowed researchers to determine the molecular-level speciation of environmentally relevant elements and evaluate their spatial distribution and phase association at very low concentration levels (low parts per million) with micrometer or nanometer resolution [1]. For the environmental scientist, one of the primary advantages of these synchrotron-based techniques is that samples need not be disturbed or destroyed for study; characterization can often be done in-situ in dilute and heterogeneous natural samples with no need for species separation, pre-concentration, or pre-treatment [2]. Liquids, hydrated solids, and biological samples can also often be directly analyzed, which is of fundamental importance in environmental science for understanding the molecular-scale processes that occur at mineral-water interfaces and in understanding how abiotic and biotic processes are involved in the distribution, mobility and ultimate fate of molecular species in the environment.

Growth of Environmental Science at the NSLS

Energy Technology Data Exchange (ETDEWEB)

Northrup,P.; Lanzirotti, A.; Celestian, A.

2007-01-01

In the 25 years since the National Synchrotron Light Source (NSLS) began operations, synchrotron 'user facilities' have had a growing impact on research in molecular environmental science (MES). For example, synchrotron-based analytical techniques have allowed researchers to determine the molecular-level speciation of environmentally relevant elements and evaluate their spatial distribution and phase association at very low concentration levels (low parts per million) with micrometer or nanometer resolution [1]. For the environmental scientist, one of the primary advantages of these synchrotron-based techniques is that samples need not be disturbed or destroyed for study; characterization can often be done in-situ in dilute and heterogeneous natural samples with no need for species separation, pre-concentration, or pre-treatment [2]. Liquids, hydrated solids, and biological samples can also often be directly analyzed, which is of fundamental importance in environmental science for understanding the molecular-scale processes that occur at mineral-water interfaces and in understanding how abiotic and biotic processes are involved in the distribution, mobility and ultimate fate of molecular species in the environment.

78 FR 25754 - National Institute of Environmental Health Sciences; Notice of Closed Meeting

Science.gov (United States)

2013-05-02

... Environmental Health Sciences; Notice of Closed Meeting Pursuant to section 10(d) of the Federal Advisory... of Extramural Research and Training, Nat. Institute of Environmental Health Science, P.O. Box 12233... Health Sciences; 93.113, Biological Response to Environmental Health Hazards; 93.114, Applied...

76 FR 52672 - National Institute of Environmental Health Sciences; Notice of Closed Meeting

Science.gov (United States)

2011-08-23

... Environmental Health Sciences; Notice of Closed Meeting Pursuant to section 10(d) of the Federal Advisory.... of Environmental Health Sciences, Keystone Building, 530 Davis Drive, Research Triangle Park, NC..., Division of Extramural Research and Training, Nat. Institute of Environmental Health Sciences, P.O. Box...

78 FR 39739 - National Institute of Environmental Health Sciences; Notice of Closed Meeting

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2013-07-02

... Environmental Health Sciences; Notice of Closed Meeting Pursuant to section 10(d) of the Federal Advisory... clearly unwarranted invasion of personal privacy. Name of Committee: Environmental Health Sciences Review... Research and Training, National Institute of Environmental Health Sciences, P.O. Box 12233, MD EC-30...

78 FR 14312 - National Institute of Environmental Health Sciences; Notice of Closed Meetings

Science.gov (United States)

2013-03-05

... Environmental Health Sciences; Notice of Closed Meetings Pursuant to section 10(d) of the Federal Advisory... Health Sciences Special Emphasis Panel; Understanding Environmental Control of Epigenetic/Mechanisms... Extramural Research and Training, Nat. Institute of Environmental Health Sciences, P.O. Box 12233, MD EC-30...

75 FR 61765 - National Institute of Environmental Health Sciences; Notice of Closed Meetings

Science.gov (United States)

2010-10-06

... Environmental Health Sciences; Notice of Closed Meetings Pursuant to section 10(d) of the Federal Advisory... Environmental Health Sciences Special Emphasis Panel, Superfund Research and Training Program. Date: October 26...-Tilotta, PhD, Scientific Review Officer, Nat. Institute of Environmental Health Sciences, Office of...

75 FR 41505 - National Institute of Environmental Health Sciences; Notice of Closed Meeting

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2010-07-16

... Environmental Health Sciences; Notice of Closed Meeting Pursuant to section 10(d) of the Federal Advisory... clearly unwarranted invasion of personal privacy. Name of Committee: Environmental Health Sciences Review... applications. Place: Nat. Inst. of Environmental Health Sciences, Building 101, Rodbell Auditorium, 111 T. W...

77 FR 30019 - National Institute of Environmental Health Sciences; Notice of Closed Meeting

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2012-05-21

... Environmental Health Sciences; Notice of Closed Meeting Pursuant to section 10(d) of the Federal Advisory... of Extramural Research and Training, Nat. Institute of Environmental Health Science, P.O. Box 12233... Health Sciences; 93.113, Biological Response to Environmental Health Hazards; 93.114, Applied...

76 FR 63311 - National Institute of Environmental Health Sciences; Notice of Closed Meetings

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2011-10-12

... Environmental Health Sciences; Notice of Closed Meetings Pursuant to section 10(d) of the Federal Advisory... Environmental Health Sciences, Office of Program Operations, Scientific Review Branch, P.O. Box 12233, Research... Environmental Health Sciences Special Emphasis Panel, Development to Independence Review Meeting. Date: November...

Web portal on environmental sciences "ATMOS''

Directory of Open Access Journals (Sweden)

E. P. Gordov

2006-01-01

Full Text Available The developed under INTAS grant web portal ATMOS (http://atmos.iao.ru and http://atmos.scert.ru makes available to the international research community, environmental managers, and the interested public, a bilingual information source for the domain of Atmospheric Physics and Chemistry, and the related application domain of air quality assessment and management. It offers access to integrated thematic information, experimental data, analytical tools and models, case studies, and related information and educational resources compiled, structured, and edited by the partners into a coherent and consistent thematic information resource. While offering the usual components of a thematic site such as link collections, user group registration, discussion forum, news section etc., the site is distinguished by its scientific information services and tools: on-line models and analytical tools, and data collections and case studies together with tutorial material. The portal is organized as a set of interrelated scientific sites, which addressed basic branches of Atmospheric Sciences and Climate Modeling as well as the applied domains of Air Quality Assessment and Management, Modeling, and Environmental Impact Assessment. Each scientific site is open for external access information-computational system realized by means of Internet technologies. The main basic science topics are devoted to Atmospheric Chemistry, Atmospheric Spectroscopy and Radiation, Atmospheric Aerosols, Atmospheric Dynamics and Atmospheric Models, including climate models. The portal ATMOS reflects current tendency of Environmental Sciences transformation into exact (quantitative sciences and is quite effective example of modern Information Technologies and Environmental Sciences integration. It makes the portal both an auxiliary instrument to support interdisciplinary projects of regional environment and extensive educational resource in this important domain.

The X-ray microscopy beamline UE46-PGM2 at BESSY

International Nuclear Information System (INIS)

Follath, R.; Schmidt, J. S.; Weigand, M.; Fauth, K.

2010-01-01

The Max Planck Institute for Metal Physics in Stuttgart and the Helmholtz Center Berlin operate a soft X-ray microscopy beamline at the storage ring BESSY II. A collimated PGM serves as monochromator for a scanning X-ray microscope and a full field X-ray microscope at the helical undulator UE46. The selection between both instruments is accomplished via two switchable focusing mirrors. The scanning microscope (SM) is based on the ALS STXM microscope and fabricated by the ACCEL company. The full field microscope (FFM) is currently in operation at the U41-SGM beamline and will be relocated to its final location this year.

Motion control system of MAX IV Laboratory soft x-ray beamlines

International Nuclear Information System (INIS)

Sjöblom, Peter; Lindberg, Mirjam; Forsberg, Johan; Persson, Andreas G.; Urpelainen, Samuli; Såthe, Conny

2016-01-01

At the MAX IV Laboratory, five new soft x-ray beamlines are under development. The first is Species and it will be used to develop and set the standard of the control system, which will be common across the facility. All motion axes at MAX IV will be motorized using stepper motors steered by the IcePAP motion controller and a mixture of absolute and incremental encoders following a predefined coordinate system. The control system software is built in Tango and uses the Python-based Sardana framework. The user controls the entire beamline through a synoptic overview and Sardana is used to run the scans.

A pixel detector for the protein crystallography beamline at the SLS

CERN Document Server

Brönnimann, C; Eikenberry, E F; Fischer, P; Florin, S; Horisberger, R P; Lindner, Manfred; Schmitt, B; Schulze, C

2002-01-01

At the Paul Scherrer Institute a new synchrotron light source is currently under construction, the Swiss Light Source (SLS), which will be operational in summer 2001. Among the first beamlines is a high brightness, micro-focusing protein crystallography beamline. It will be equipped with a pixel detector, which has several features of interest for the next generation of protein crystallography detectors. The point spread function and the effect of charge sharing was measured with a prototype detector in a test experiment at the European Synchrotron Radiation Facility in Grenoble. The concepts of the SLS pixel detector is presented as well as test results from radiation hard prototype chips.

Motion control system of MAX IV Laboratory soft x-ray beamlines

Energy Technology Data Exchange (ETDEWEB)

Sjöblom, Peter, E-mail: peter.sjoblom@maxlab.lu.se; Lindberg, Mirjam, E-mail: mirjam.lindberg@maxlab.lu.se; Forsberg, Johan, E-mail: johan.forsberg@maxlab.lu.se; Persson, Andreas G., E-mail: andreas-g.persson@maxlab.lu.se; Urpelainen, Samuli, E-mail: samuli.urpelainen@maxlab.lu.se; Såthe, Conny, E-mail: conny.sathe@maxlab.lu.se [MAX IV Laboratory, Photongatan 2, 225 92 Lund (Sweden)

2016-07-27

At the MAX IV Laboratory, five new soft x-ray beamlines are under development. The first is Species and it will be used to develop and set the standard of the control system, which will be common across the facility. All motion axes at MAX IV will be motorized using stepper motors steered by the IcePAP motion controller and a mixture of absolute and incremental encoders following a predefined coordinate system. The control system software is built in Tango and uses the Python-based Sardana framework. The user controls the entire beamline through a synoptic overview and Sardana is used to run the scans.

1992 Environmental Summer Science Camp Program evaluation. The International Environmental Institute of Westinghouse Hanford Company

Energy Technology Data Exchange (ETDEWEB)

1993-07-01

This report describes the 1992 Westinghouse Hanford Company/US Department of Energy Environmental Summer Science Camp. The objective of the ``camp`` was to motivate sixth and seventh graders to pursue studies in math, science, and the environment. This objective was accomplished through hands-on fun activities while studying the present and future challenges facing our environment. The camp was funded through Technical Task Plan, 424203, from the US Department of Energy-Headquarters, Office of Environmental Restoration and Waste Management, Technology Development,to Westinghouse Hanford Company`s International Environmental Institute, Education and Internship Performance Group.

The Relationship between Environmental Moral Reasoning and Environmental Attitudes of Pre-Service Science Teachers

Science.gov (United States)

Tuncay, Busra; Yilmaz-Tuzun, Ozgul; Tuncer-Teksoz, Gaye

2011-01-01

The aim of the present study was to investigate the relationship between environmental moral reasoning patterns and environmental attitudes of 120 pre-service science teachers. Content analysis was carried out on participants' written statements regarding their concerns about the presented environmental problems and the statements were labeled as…

Environmental Sciences Division. Annual progress report for period ending September 30, 1979

International Nuclear Information System (INIS)

1980-03-01

Progress for the period ending September 30, 1979 by the Environmental Sciences Division is reported. Sections reporting include terrestrial ecoloy; earth sciences; environmental resources; aquatic ecology; synthetic fuels; nuclear program; environmental impacts program; ecosystem studies; and burial ground technology

Environmental Management Science Program Workshop

Energy Technology Data Exchange (ETDEWEB)

None

1998-07-01

This program summary book is a compendium of project summaries submitted by principal investigators in the Environmental Management Science Program and Environmental Management/Energy Research Pilot Collaborative Research Program (Wolf-Broido Program). These summaries provide information about the most recent project activities and accomplishments. All projects will be represented at the workshop poster sessions, so you will have an opportunity to meet with the researchers. The projects will be presented in the same order at the poster session as they are presented in this summary book. Detailed questions about an individual project may be directed to the investigators involved.

DA+ data acquisition and analysis software at the Swiss Light Source macromolecular crystallography beamlines.

Science.gov (United States)

Wojdyla, Justyna Aleksandra; Kaminski, Jakub W; Panepucci, Ezequiel; Ebner, Simon; Wang, Xiaoqiang; Gabadinho, Jose; Wang, Meitian

2018-01-01

Data acquisition software is an essential component of modern macromolecular crystallography (MX) beamlines, enabling efficient use of beam time at synchrotron facilities. Developed at the Paul Scherrer Institute, the DA+ data acquisition software is implemented at all three Swiss Light Source (SLS) MX beamlines. DA+ consists of distributed services and components written in Python and Java, which communicate via messaging and streaming technologies. The major components of DA+ are the user interface, acquisition engine, online processing and database. Immediate data quality feedback is achieved with distributed automatic data analysis routines. The software architecture enables exploration of the full potential of the latest instrumentation at the SLS MX beamlines, such as the SmarGon goniometer and the EIGER X 16M detector, and development of new data collection methods.

The role of metadata in managing large environmental science datasets. Proceedings

Energy Technology Data Exchange (ETDEWEB)

Melton, R.B.; DeVaney, D.M. [eds.] [Pacific Northwest Lab., Richland, WA (United States); French, J. C. [Univ. of Virginia, (United States)

1995-06-01

The purpose of this workshop was to bring together computer science researchers and environmental sciences data management practitioners to consider the role of metadata in managing large environmental sciences datasets. The objectives included: establishing a common definition of metadata; identifying categories of metadata; defining problems in managing metadata; and defining problems related to linking metadata with primary data.

78 FR 18359 - National Institute of Environmental Health Sciences; Notice of Closed Meetings

Science.gov (United States)

2013-03-26

... Environmental Health Sciences; Notice of Closed Meetings Pursuant to section 10(d) of the Federal Advisory... Training, Nat. Institute of Environmental Health Sciences, P.O. Box 12233, MD EC-30, Research Triangle Park... Environmental Health Sciences Special Emphasis Panel; Research Careers in Emerging Technologies. Date: April 30...

77 FR 60445 - National Institute of Environmental Health Sciences; Notice of Closed Meetings

Science.gov (United States)

2012-10-03

... Environmental Health Sciences; Notice of Closed Meetings Pursuant to section 10(d) of the Federal Advisory... Research and Training, National Institute of Environmental Health Science, P.O. Box 12233, MD EC-30/Room... Environmental Health Sciences Special Emphasis Panel; Support for Conferences and Scientific Meetings. Date...

77 FR 22793 - National Institute of Environmental Health Sciences; Notice of Closed Meetings

Science.gov (United States)

2012-04-17

... Environmental Health Sciences; Notice of Closed Meetings Pursuant to section 10(d) of the Federal Advisory.... Institute of Environmental Health Sciences, P.O. Box 12233, MD EC-30, Research Triangle Park, NC 27709, (919....D., Scientific Review Administrator, Nat. Institute of Environmental Health Sciences, Office of...

77 FR 12602 - National Institute of Environmental Health Sciences; Notice of Closed Meetings

Science.gov (United States)

2012-03-01

... Environmental Health Sciences; Notice of Closed Meetings Pursuant to section 10(d) of the Federal Advisory... Environmental Health Sciences, Office of Program Operations, Scientific Review Branch, P.O. Box 12233, Research... Environmental Health Sciences Special Emphasis Panel; Career Development Early Award. Date: March 29, 2012. Time...

77 FR 6569 - National Institute of Environmental Health Sciences; Notice of Closed Meeting

Science.gov (United States)

2012-02-08

... Environmental Health Sciences; Notice of Closed Meeting Pursuant to section 10(d) of the Federal Advisory... Health Sciences, Special Emphasis Panel, Environmental Stem Cells Research. Date: February 29-March 2... of Environmental Health Sciences, P.O. Box 12233, MD EC-30, Research Triangle Park, NC 27709, (919...

76 FR 62080 - National Institute of Environmental Health Sciences; Notice of Closed Meeting

Science.gov (United States)

2011-10-06

... Environmental Health Sciences; Notice of Closed Meeting Pursuant to section 10(d) of the Federal Advisory... clearly unwarranted invasion of personal privacy. Name of Committee: Environmental Health Sciences Review... Extramural Research and Training, Nat'l Institute of Environmental Health Sciences, P.O. Box 12233, MD EC-30...

77 FR 16844 - National Institute of Environmental Health Sciences; Notice of Closed Meetings

Science.gov (United States)

2012-03-22

... Environmental Health Sciences; Notice of Closed Meetings Pursuant to section 10(d) of the Federal Advisory.... Institute Environmental Health Sciences, P.O. Box 12233, MD EC-30, Research Triangle Park, NC 27709, (919) 541-1307, [email protected] . Name of Committee: National Institute of Environmental Health Sciences...

75 FR 10293 - National Institute of Environmental Health Sciences; Notice of Closed Meeting

Science.gov (United States)

2010-03-05

... Environmental Health Sciences; Notice of Closed Meeting Pursuant to section 10(d) of the Federal Advisory.... Institute Environmental Health Sciences, P. O. Box 12233, MD EC-30, Research Triangle Park, NC 27709, (919... Health Sciences; 93.113, Biological Response to Environmental Health Hazards; 93.114, Applied...

Simulation of a high energy neutron irradiation facility at beamline 11 of the China Spallation Neutron Source

Energy Technology Data Exchange (ETDEWEB)

Tairan, Liang [School of Physics and Electronic Information Inner Mongolia University for the Nationalities, Tongliao 028043 (China); Zhiduo, Li [Dongguan Branch, Institute of High Energy Physics, CAS, Beijing 100049 (China); Wen, Yin, E-mail: wenyin@aphy.iphy.ac.cn [Dongguan Branch, Institute of High Energy Physics, CAS, Beijing 100049 (China); Institute of Physics, CAS, P.O. Box 603, Beijing 100190 (China); Fei, Shen [Dongguan Branch, Institute of High Energy Physics, CAS, Beijing 100049 (China); Quanzhi, Yu [Dongguan Branch, Institute of High Energy Physics, CAS, Beijing 100049 (China); Institute of Physics, CAS, P.O. Box 603, Beijing 100190 (China); Tianjiao, Liang [Dongguan Branch, Institute of High Energy Physics, CAS, Beijing 100049 (China)

2017-07-11

The China Spallation Neutron Source (CSNS) will accommodate 20 neutron beamlines at its first target station. These beamlines serve different purposes, and beamline 11 is designed to analyze the degraded models and damage mechanisms, such as Single Event Effects in electronic components and devices for aerospace electronic systems. This paper gives a preliminary discussion on the scheme of a high energy neutron irradiation experiment at the beamline 11 shutter based on the Monte Carlo simulation method. The neutron source term is generated by calculating the neutrons scattering into beamline 11 with a model that includes the target-moderator-reflector area. Then, the neutron spectrum at the sample position is obtained. The intensity of neutrons with energy of hundreds of MeV is approximately 1E8 neutron/cm{sup 2}/s, which is useful for experiments. The displacement production rate and gas productions are calculated for common materials such as tungsten, tantalum and SS316. The results indicate that the experiment can provide irradiation dose rate ranges from 1E-5 to 1E-4 dpa per operating year. The residual radioactivity is also calculated for regular maintenance work. These results give the basic reference for the experimental design.

78 FR 32672 - National Institute of Environmental Health Sciences (NIEHS); Notice of Meeting

Science.gov (United States)

2013-05-31

... Environmental Health Sciences (NIEHS); Notice of Meeting Pursuant to the NIH Reform Act of 2006 (42 U.S.C. 281 (d)(4)), notice is hereby given that the National Institute of Environmental Health Sciences (NIEHS... Popovich, National Institute of Environmental Health Sciences, Division of Extramural Research and Training...

77 FR 61613 - National Institute of Environmental Health Sciences; Notice of Closed Meetings

Science.gov (United States)

2012-10-10

... Environmental Health Sciences; Notice of Closed Meetings Pursuant to section 10(d) of the Federal Advisory... Environmental Health Sciences, P. O. Box 12233, MD EC-30, Research Triangle Park, NC 27709, (919) 541-1307, [email protected] . Name of Committee: National Institute of Environmental Health Sciences Special Emphasis...

75 FR 68367 - National Institute of Environmental Health Sciences; Notice of Closed Meeting

Science.gov (United States)

2010-11-05

... Environmental Health Sciences; Notice of Closed Meeting Pursuant to section 10(d) of the Federal Advisory... Research and Training, Nat. Institute of Environmental Health Science, P.O. Box 12233, MD EC-30/Room 3170 B... Sciences; 93.113, Biological Response to Environmental Health Hazards; 93.114, Applied Toxicological...

76 FR 26311 - National Institute of Environmental Health Sciences; Notice of Closed Meeting

Science.gov (United States)

2011-05-06

... Environmental Health Sciences; Notice of Closed Meeting Pursuant to section 10(d) of the Federal Advisory.... Institute of Environmental Health Sciences, P.O. Box 12233, MD EC-30/Room 3171, Research Triangle Park, NC... and Education; 93.894, Resources and Manpower Development in the Environmental Health Sciences; 93.113...

77 FR 37423 - National Institute of Environmental Health Sciences; Notice of Closed Meetings

Science.gov (United States)

2012-06-21

... Environmental Health Sciences; Notice of Closed Meetings Pursuant to section 10(d) of the Federal Advisory..., [email protected] . Name of Committee: National Institute of Environmental Health Sciences Special... Research and Training, Nat. Institute of Environmental Health Science, P.O. Box 12233, MD EC-30/Room 3170 B...

Characterising the large coherence length at diamond’s beamline I13L

Energy Technology Data Exchange (ETDEWEB)

Wagner, U. H., E-mail: ulrich.wagner@diamond.ac.uk; Parsons, A. [Diamond Light Source Ltd, Didcot, UK, OX11 0DE (United Kingdom); Rahomaki, J.; Vogt, U. [KTH Royal Institute of Technology, Stockholm, Sweden, SE-100 44 (Sweden); Rau, C. [Diamond Light Source Ltd, Didcot, UK, OX11 0DE (United Kingdom); Northwestern University, Chicago, IL 60611-3008 (United States)

2016-07-27

I13 is a 250 m long hard x-ray beamline (6 keV to 35 keV) at the Diamond Light Source. The beamline comprises of two independent experimental endstations: one for imaging in direct space using x-ray microscopy and one for imaging in reciprocal space using coherent diffraction based imaging techniques [1]. An outstanding feature of the coherence branch, due to its length and a new generation of ultra-stable beamline instrumentation [2], is its capability of delivering a very large coherence length well beyond 200 μm, providing opportunities for unique x-ray optical experiments. In this paper we discuss the challenges of measuring a large coherence length and present quantitative measurement based on analyzing diffraction patterns from a boron fiber [3]. We also discuss the limitations of this classical method in respect to detector performance, very short and long coherence lengths. Furthermore we demonstrate how a Ronchi grating setup [4] can be used to quickly establish if the beam is coherent over a large area.

Characterising the large coherence length at diamond’s beamline I13L

International Nuclear Information System (INIS)

Wagner, U. H.; Parsons, A.; Rahomaki, J.; Vogt, U.; Rau, C.

2016-01-01

I13 is a 250 m long hard x-ray beamline (6 keV to 35 keV) at the Diamond Light Source. The beamline comprises of two independent experimental endstations: one for imaging in direct space using x-ray microscopy and one for imaging in reciprocal space using coherent diffraction based imaging techniques [1]. An outstanding feature of the coherence branch, due to its length and a new generation of ultra-stable beamline instrumentation [2], is its capability of delivering a very large coherence length well beyond 200 μm, providing opportunities for unique x-ray optical experiments. In this paper we discuss the challenges of measuring a large coherence length and present quantitative measurement based on analyzing diffraction patterns from a boron fiber [3]. We also discuss the limitations of this classical method in respect to detector performance, very short and long coherence lengths. Furthermore we demonstrate how a Ronchi grating setup [4] can be used to quickly establish if the beam is coherent over a large area.

Solutions to mitigate heat loads due to electrons on sensitive components of ITER HNB beamlines

Energy Technology Data Exchange (ETDEWEB)

Sartori, Emanuele, E-mail: emanuele.sartori@gmail.com [Consorzio RFX (CNR, ENEA, INFN, Università di Padova, Acciaierie Venete SpA), C.so Stati Uniti 4, 35127 Padova (Italy); Veltri, Pierluigi; Dalla Palma, Mauro; Agostinetti, Piero [Consorzio RFX (CNR, ENEA, INFN, Università di Padova, Acciaierie Venete SpA), C.so Stati Uniti 4, 35127 Padova (Italy); Hemsworth, Ronald; Singh, Mahendrajit [ITER Organization, Route de Vinon sur Verdon, 13115 Saint Paul Lez Durance (France); Serianni, Gianluigi [Consorzio RFX (CNR, ENEA, INFN, Università di Padova, Acciaierie Venete SpA), C.so Stati Uniti 4, 35127 Padova (Italy)

2016-11-01

Highlights: • Energetic electrons leaking out of the ITER HNB accelerator are simulated. • Electrons generated along the ITER HNB beamline are simulated. • Heat loads and heat load maps on cryopumps are calculated for ITER HNB and test facility. • Protection solutions that will be installed are presented and their effect discussed. - Abstract: The operation of neutral beam injectors for plasma heating and current drive in a fusion device provides challenges in the thermal management of beamline components. Sensitive components such as the cryogenic pumps at beamline periphery shall be protected from the heat flux due to stray electrons. These are emitted by the negative ion accelerator or generated along the beamline by interaction of fast electrons, ions or atoms with background gas and surfaces. In this article the case of the ITER Heating Neutral Beam (HNB) and its test facility MITICA is discussed, for which the beam parameters and the required pulse length of one hour is a major leap forward with respect to the present experience with neutral beam systems. The engineering solutions adopted for effective cryopump protection against the heat load from electrons are described. The use of three-dimensional numerical simulations of particle trajectories in the complex geometry of the beamline was needed for the quantitative estimations of the heat loads. The presented solutions were optimized to minimize the impact on gas pumping and on the functionality of other components.

Design and optimization of a compact laser-driven proton beamline.

Science.gov (United States)

Scisciò, M; Migliorati, M; Palumbo, L; Antici, P

2018-04-19

Laser-accelerated protons, generated by irradiating a solid target with a short, energetic laser pulse at high intensity (I > 10 18  W·cm -2 ), represent a complementary if not outperforming source compared to conventional accelerators, due  to their intrinsic features, such as high beam charge and short bunch duration. However, the broadband energy spectrum of these proton sources is a bottleneck that precludes their use in applications requiring a more reduced energy spread. Consequently, in recent times strong effort has been put to overcome these limits and to develop laser-driven proton beamlines with low energy spread. In this paper, we report on beam dynamics simulations aiming at optimizing a laser-driven beamline - i.e. a laser-based proton source coupled to conventional magnetic beam manipulation devices - producing protons with a reduced energy spread, usable for applications. The energy range of investigation goes from 2 to 20 MeV, i.e. the typical proton energies that can be routinely obtained using commercial TW-power class laser systems. Our beamline design is capable of reducing the energy spread below 20%, still keeping the overall transmission efficiency around 1% and producing a proton spot-size in the range of 10 mm 2 . We briefly discuss the results in the context of applications in the domain of Cultural Heritage.

Nuclear analysis techniques and environmental sciences

International Nuclear Information System (INIS)

1997-10-01

31 theses are collected in this book. It introduced molecular activation analysis micro-PIXE and micro-probe analysis, x-ray fluorescence analysis and accelerator mass spectrometry. The applications about these nuclear analysis techniques are presented and reviewed for environmental sciences

76 FR 58521 - National Institute of Environmental Health Sciences; Notice of Closed Meetings

Science.gov (United States)

2011-09-21

... Environmental Health Sciences; Notice of Closed Meetings Pursuant to section 10(d) of the Federal Advisory... and Training, Nat. Institute of Environmental Health Science, P. O. Box 12233, MD EC-30/Room 3170 B... Extramural Research and Training, Nat. Institute of Environmental Health Sciences, P. O. Box 12233, MD EC-30...

MONO: A program to calculate synchrotron beamline monochromator throughputs

International Nuclear Information System (INIS)

Chapman, D.

1989-01-01

A set of Fortran programs have been developed to calculate the expected throughput of x-ray monochromators with a filtered synchrotron source and is applicable to bending magnet and wiggler beamlines. These programs calculate the normalized throughput and filtered synchrotron spectrum passed by multiple element, flat un- focussed monochromator crystals of the Bragg or Laue type as a function of incident beam divergence, energy and polarization. The reflected and transmitted beam of each crystal is calculated using the dynamical theory of diffraction. Multiple crystal arrangements in the dispersive and non-dispersive mode are allowed as well as crystal asymmetry and energy or angle offsets. Filters or windows of arbitrary elemental composition may be used to filter the incident synchrotron beam. This program should be useful to predict the intensities available from many beamline configurations as well as assist in the design of new monochromator and analyzer systems. 6 refs., 3 figs

Epistemic Agency in an Environmental Sciences Watershed Investigation Fostered by Digital Photography

Science.gov (United States)

Zimmerman, Heather Toomey; Weible, Jennifer L.

2018-01-01

This collective case study investigates the role of digital photography to support high school students' engagement in science inquiry practices during a three-week environmental sciences unit. The study's theoretical framework brings together research from digital photography, participation in environmental science practices, and epistemic…

A Comprehensive Course Introducing Environmental Science : Case Study of “Introduction to Environmental Science” as a Common Course in the Graduate School of Environmental Science

OpenAIRE

山中, 康裕; 三井, 翔太

2017-01-01

The course “Introduction to Environmental Science” was designed and held during the academic year 2015-2016 for new masterʼs course students at the Graduate School of Environmental Science, Hokkaido University. The course was designed in accord with societal needs such as consensus building for environmental conservation and associated scientific evidence, bringing together a large number of students from various disciplines. The course was composed of six modules in which multipl...

Differential phase contrast setup for a non coherent beamline at HASYLAB using hard X-ray grating interferometer

Energy Technology Data Exchange (ETDEWEB)

Herzen, Julia; Beckmann, Felix; Haibel, Astrid; Schreyer, Andreas [GKSS Research Centre, Geesthacht (Germany); Donath, Tilman; David, Christian; Gruenzweig, Christian [Paul Scherrer Institute, Villigen PSI (Switzerland); Pfeiffer, Franz [Paul Scherrer Institute, Villigen PSI (Switzerland); EPF Lausanne, Lausanne (Switzerland)

2009-07-01

Phase-contrast imaging is a common technique to visualize soft tissue with much higher contrast than the conventional absorption-contrast imaging. Differential phase contrast (DPC), developed at PSI, Switzerland, makes use of a hard x-ray grating interferometer and allows for phase-contrast imaging with high brilliance synchrotron sources as well as with conventional x-ray tubes. It is recently reported also to provide dark field information that is very sensitive to micro structures like porosity within the materials. Here we present the plans to adopt the DPC technique to the HARWI-II materials science beamline, operated by GKSS Research Centre, in cooperation with DESY, Hamburg. This will offer an amount of new applications especially in the field of materials science like for example characterizing new light weight materials like magnesium and studying its corrosion as implant material.

Using the particle beam optics lab. (PBO LABtm) for beamline design and analysis

International Nuclear Information System (INIS)

Gillespie, G.H.; Hill, B.W.; Martono, H.; Moore, J.M.; Lampel, M.C.; Brown, N.A.

1999-01-01

The Particle Beam Optics Interactive Computer Laboratory (PBO Lab) represents a new approach to providing software for particle beam optics modeling. The PBO Lab includes four key elements: a graphic user interface shell; a graphic beamline construction kit for users to interactively and visually construct optical beam lines; a knowledge database on the physics and technology of optical elements, and various charged particle optics computational engines. A first-order matrix code, including a space charge model, can be used to produce scaled images of beamlines together with overlays of single trajectories and beam envelopes. The qualitative results of graphically sliding beamline components, or adjusting bend angles, can be explored interactively. Quantitative computational engines currently include the third-order TRANSPORT code and the multi-particle ray tracing program TURTLE. The use of the PBO Lab for designing and analyzing a second order achromatic bend is illustrated with the Windows 95/NT version of the software. (authors)

Considerations for a soft x-ray spectromicroscopy beamline

International Nuclear Information System (INIS)

Winn, B.; Hao, X.; Jacobsen, C.

1996-01-01

The X-1A soft x-ray undulator at the NSLS is the source for the experimental programs in spectromicroscopy. The authors require both spatial and temporal coherence. Due to the relatively large horizontal divergence of the electron beam in the low β straight section of the x-ray storage ring, it has been possible to split the beam using a scraping mirror into two branches: X-1A used by the authors' program and X-1B used for high resolution spectroscopy. They are now rebuilding the X-1A beamline to provide improved resolving power and essentially linear trade-off between photon rate at the zone plate and resolving power for the soft x-ray spectromicroscopy experiments. This new beamline will exploit both additional floorspace due to the NSLS building expansion and increases in the brightness of the x-ray ring. The beam will be further split into two separate beamlines, both of which will use toroidal mirrors to focus the source on the monochromator entrance slits horizontally and to focus on the monochromator exit slits vertically. This separation comes at no loss of coherent flux and permits low thermal loading on the optics, since the authors need little more than the coherent fraction of the beam at the Fresnel zone plate for microfocusing. Because of the small angular acceptance for spatially coherent illumination of the zone plates and the use of an approximately satisfied Rowland condition, the monochromators have sufficient resolving power with fixed exit arms. Experiments can then be placed near the exit slits, with spatial coherence established by the exit slit size. Resolving power will be controlled by adjusting the entrance slit alone with no change of spatial coherence. The zone plates will be overfilled to be less sensitive to beam vibration and drift

ELIMED, MEDical and multidisciplinary applications at ELI-Beamlines

International Nuclear Information System (INIS)

Schillaci, F; Anzalone, A; Cirrone, G A P; Cuttone, G; Musumarra, A; Pisciotta, P; Romano, F; Romano, F P; Carpinelli, M; Cutroneo, M; De Martinis, C; Giove, D; Korn, G; Maggiore, M; Margarone, D; Manti, L; Perozziello, F M; Petrovic, I; Ristic-Fira, A; Renis, M

2014-01-01

ELI-Beamlines is one of the pillars of the pan-European project ELI (Extreme Light Infrastructure). It will be an ultra high-intensity, high repetition-rate, femtosecond laser facility whose main goal is generation and applications of high-brightness X-ray sources and accelerated charged particles in different fields. Particular care will be devoted to the potential applicability of laser-driven ion beams for medical treatments of tumors. Indeed, such kind of beams show very interesting peculiarities and, moreover, laser-driven based accelerators can really represent a competitive alternative to conventional machines since they are expected to be more compact in size and less expensive. The ELIMED project was launched thanks to a collaboration established between FZU-ASCR (ELI-Beamlines) and INFN-LNS researchers. Several European institutes have already shown a great interest in the project aiming to explore the possibility to use laser-driven ion (mostly proton) beams for several applications with a particular regard for medical ones. To reach the project goal several tasks need to be fulfilled, starting from the optimization of laser-target interaction to dosimetric studies at the irradiation point at the end of a proper designed transport beam-line. Researchers from LNS have already developed and successfully tested a high-dispersive power Thomson Parabola Spectrometer, which is the first prototype of a more performing device to be used within the ELIMED project. Also a Magnetic Selection System able to produce a small pencil beam out of a wide energy distribution of ions produced in laser-target interaction has been realized and some preliminary work for its testing and characterization is in progress. In this contribution the status of the project will be reported together with a short description of the of the features of device recently developed.

The Relationship between Environmental Moral Reasoning and Environmental Attitudes of Pre-Service Science Teachers

OpenAIRE

TUNCAY, Busra; YILMAZ-TUZUN, Ozgul; TUNCER-TEKSOZ, Gaye

2011-01-01

The aim of the present study was to investigate the relationship between environmental moral reasoning patterns and environmental attitudes of 120 pre-service science teachers. Content analysis was carried out on participants’ written statements regarding their concerns about the presented environmental problems and the statements were labeled as ecocentric, anthropocentric, and non-environmental according to their meanings. Then, descriptive and inferential analyses were conducted ...

Radiation field characterization and shielding studies for the ELI Beamlines facility

Energy Technology Data Exchange (ETDEWEB)

Ferrari, A., E-mail: a.ferrari@hzdr.de [Institute of Radiation Physics, Helmholtz-Zentrum Dresden-Rossendorf, PF 510119, 01314 Dresden (Germany); Amato, E. [Department of Radiological Sciences, Messina University (Italy); Margarone, D. [ELI Beamlines Project, Institute of Physics of the ASCR, Na Slovance 2, 18221 Prague (Czech Republic); PALS Centre, Za Slovankou, 18200 Prague (Czech Republic); Cowan, T. [Institute of Radiation Physics, Helmholtz-Zentrum Dresden-Rossendorf, PF 510119, 01314 Dresden (Germany); Korn, G. [ELI Beamlines Project, Institute of Physics of the ASCR, Na Slovance 2, 18221 Prague (Czech Republic)

2013-05-01

The ELI (Extreme Light Infrastructure) Beamlines facility in the Czech Republic, which is planned to complete the installation in 2015, is one of the four pillars of the ELI European project. Several laser beamlines with ultrahigh intensities and ultrashort pulses are foreseen, offering versatile radiation sources in an unprecedented energy range: laser-driven particle beams are expected to range between 1 and 50 GeV for electrons and from 100 MeV up to 3 GeV for protons. The number of particles delivered per laser shot is estimated to be 10{sup 9}–10{sup 10} for the electron beams and 10{sup 10}–10{sup 12} for the proton beams. The high energy and current values of the produced particles, together with the potentiality to operate at 10 Hz laser repetition rate, require an accurate study of the primary and secondary radiation fields to optimize appropriate shielding solutions: this is a key issue to minimize prompt and residual doses in order to protect the personnel, reduce the radiation damage of electronic devices and avoid strong limitations in the operational time. A general shielding study for the 10 PW (0.016 Hz) and 2 PW (10 Hz) laser beamlines is presented here. Starting from analytical calculations, as well as from dedicated simulations, the main electron and proton fields produced in the laser-matter interaction have been described and used to characterize the “source terms” in full simulations with the Monte Carlo code FLUKA. The secondary radiation fields have been then analyzed to assess a proper shielding. The results of this study and the proposed solutions for the beam dumps of the high energy beamlines, together with a cross-check analysis performed with the Monte Carlo code GEANT4, are presented.

Guide to beamline radiation shielding design at the Advanced Photon Source

International Nuclear Information System (INIS)

Ipe, N.; Haeffner, D.R.; Alp, E.E.; Davey, S.C.; Dejus, R.J.; Hahn, U.; Lai, B.; Randall, K.J.; Shu, D.

1993-11-01

This document is concerned with the general requirements for radiation shielding common to most Advanced Photon Source (APS) users. These include shielding specifications for hutches, transport, stops, and shutters for both white and monochromatic beams. For brevity, only the results of calculations are given in most cases. So-called open-quotes special situationsclose quotes are not covered. These include beamlines with white beam mirrors for low-pass energy filters (open-quotes pink beamsclose quotes), extremely wide band-pass monochromators (multilayers), or novel insertion devices. These topics are dependent on beamline layout and, as such, are not easily generalized. Also, many examples are given for open-quotes typicalclose quotes hutches or other beamline components. If a user has components that differ greatly from those described, particular care should be taken in following these guidelines. Users with questions on specific special situations should address them to the APS User Technical Interface. Also, this document does not cover specifics on hutch, transport, shutter, and stop designs. Issues such as how to join hutch panels, floor-wall interfaces, cable feed-throughs, and how to integrate shielding into transport are covered in the APS Beamline Standard Components Handbook. It is a open-quotes living documentclose quotes and as such reflects the improvements in component design that are ongoing. This document has the following content. First, the design criteria will be given. This includes descriptions of some of the pertinent DOE regulations and policies, as well as brief discussions of abnormal situations, interlocks, local shielding, and storage ring parameters. Then, the various sources of radiation on the experimental floor are discussed, and the methods used to calculate the shielding are explained (along with some sample calculations). Finally, the shielding recommendations for different situations are given and discussed

Using Environmental Science as a Motivational Tool to Teach Physics to Non-Science Majors

Science.gov (United States)

Busch, Hauke C.

2010-01-01

A traditional physical science course was transformed into an environmental physical science course to teach physics to non-science majors. The objective of the new course was to improve the learning of basic physics principles by applying them to current issues of interest. A new curriculum was developed with new labs, homework assignments,…

Material failures observed in Doublet III neutral beamlines

International Nuclear Information System (INIS)

Bailey, E.W.; Colleraine, A.; Doll, D.; Grunloh, H.; Kim, J.; Langhorn, A.; Thurgood, B.

1983-12-01

The Doublet III neutral beam injectors consist of three separable spools two meters in diameter by four meters long overall when assembled. Contained within these spools are the neutralizers, ion dumps, deflecting magnet, calorimeter dumps, cryogenic panels and beam scraping collimators 3,7. To date three beamlines are in operation on Doublet III, and the beams have accumulated operating time of approximately 32 months, with the oldest having been in operation for 18 months. During this time operation of DIII with the neutral beam sources has demonstrated the following: 7.8 MW injected neutrals from three beamlines (6 sources), high β (4.5%), and non-circular plasma shape. The sources have also exhibited a very reliable injected shot history 4, 5, 6, 8. Material failures encountered during the operation of DIII N.B. injectors and the solutions to these failures are described. Failures include cracking of the neutralizer exit collimator due to heating cycles, failure of cyropanel support rods due to cooling cycles, failure of the sliding drive of the moveable calorimeter due to friction

Science Education for Environmental Awareness: Approaches to Integrating Cognitive and Affective Domains

Science.gov (United States)

Littledyke, Michael

2008-01-01

Science education has an important part in developing understanding of concepts that underpin environmental issues, leading potentially to pro-environmental behaviour. However, science is commonly perceived negatively, leading to inappropriate and negative models of science that do not connect to people's experiences. The article argues that the…

A Reconstructed Vision of Environmental Science Literacy: The case of Qatar

Science.gov (United States)

Khishfe, Rola

2014-12-01

The purpose of this study was twofold: (a) develop a conceptual framework for environmental science literacy; and consequently (b) examine the potential of science standards/curricula to prepare environmentally literate citizens. The framework comprised four pillars: science content knowledge, scientific inquiry, nature of science (NOS), and socioscientific issues (SSI). A conceptual understanding of these pillars as interconnected was presented and justified. Then the developed framework was used to examine the potential of the Qatari science standards to prepare environmentally literate citizens. Results showed that the secondary Qatari science standards generally take up the pillars of science content and scientific inquiry in an explicit manner. The NOS pillar is rarely addressed, while the SSI pillar is not addressed in the objectives and activities in a way that aligns with the heavy emphasis given in the overall aims. Moreover, the connections among pillars are mostly manifested within the activities and between the science content and scientific inquiry. The objectives and activities targeting the environment were less frequent among the four pillars across the Qatari standards. Again, the connections related to the environment were less frequent in conformity with the limited environmental objectives and activities. Implications from this study relate to the need for the distribution of the four pillars across the standards as well as the presentation of the different pillars as interconnected.

A study on radiation shielding and safety analysis for a synchrotron radiation beamline

International Nuclear Information System (INIS)

Asano, Yoshihiro

2001-03-01

Methods of shielding design and safety analysis are presented for a beam-line of synchrotron radiation. This paper consists of the shielding and safety study of synchrotron radiation with extremely intense and low energy photon below several hundreds keV, and the study for the behavior of remarkable high-energy photons up to 8 GeV, which can creep into beam-lines. A new shielding design code, STAC8 was developed to estimate the leakage dose outside the beam line hutch (an enclosure of the beam, optical elements or experimental instruments) easily and quickly with satisfactory accuracy. The code can calculate consistently from sources of synchrotron radiation to dose equivalent outside hutches with considering the build up effect and polarization effect. Validity of the code was verified by comparing its calculations with those of Monte Carlo simulations and measurement results of the doses inside the hutch of the BL14C of Photon Factory in the High Energy Accelerator Research Organization (KEK), showing good agreements. The shielding design calculations using STAC8 were carried out to apply to the practical beam-lines with the considering polarization effect and clarified the characteristics of the typical beam-line of the third generation synchrotron radiation facility, SPring-8. In addition, the shielding calculations were compared with the measurement outside the shield wall of the bending magnet beam-line of SPring-8, and showed fairly good agreement. The new shielding problems, which have usually been neglected in shielding designs for existing synchrotron radiation facilities, are clarified through the analysis of the beam-line shielding of SPring-8. The synchrotron radiation from the SPring-8 has such extremely high-intensity involving high energy photons that the scattered synchrotron radiation from the concrete floor of the hutch, the ground shine, causes a seriously high dose. The method of effective shielding is presented. For the estimation of the gas

A study on radiation shielding and safety analysis for a synchrotron radiation beamline

Energy Technology Data Exchange (ETDEWEB)

Asano, Yoshihiro [Japan Atomic Energy Research Inst., Kansai Research Establishment, Synchrotron Radiation Research Center, Mikazuhi, Hyogo (Japan)

2001-03-01

Methods of shielding design and safety analysis are presented for a beam-line of synchrotron radiation. This paper consists of the shielding and safety study of synchrotron radiation with extremely intense and low energy photon below several hundreds keV, and the study for the behavior of remarkable high-energy photons up to 8 GeV, which can creep into beam-lines. A new shielding design code, STAC8 was developed to estimate the leakage dose outside the beam line hutch (an enclosure of the beam, optical elements or experimental instruments) easily and quickly with satisfactory accuracy. The code can calculate consistently from sources of synchrotron radiation to dose equivalent outside hutches with considering the build up effect and polarization effect. Validity of the code was verified by comparing its calculations with those of Monte Carlo simulations and measurement results of the doses inside the hutch of the BL14C of Photon Factory in the High Energy Accelerator Research Organization (KEK), showing good agreements. The shielding design calculations using STAC8 were carried out to apply to the practical beam-lines with the considering polarization effect and clarified the characteristics of the typical beam-line of the third generation synchrotron radiation facility, SPring-8. In addition, the shielding calculations were compared with the measurement outside the shield wall of the bending magnet beam-line of SPring-8, and showed fairly good agreement. The new shielding problems, which have usually been neglected in shielding designs for existing synchrotron radiation facilities, are clarified through the analysis of the beam-line shielding of SPring-8. The synchrotron radiation from the SPring-8 has such extremely high-intensity involving high energy photons that the scattered synchrotron radiation from the concrete floor of the hutch, the ground shine, causes a seriously high dose. The method of effective shielding is presented. For the estimation of the gas

77 FR 4572 - National Institute of Environmental Health Sciences; Notice of Closed Meeting

Science.gov (United States)

2012-01-30

... Environmental Health Sciences; Notice of Closed Meeting Pursuant to section 10(d) of the Federal Advisory... Development in the Environmental Health Sciences; 93.113, Biological Response to Environmental Health Hazards... clearly unwarranted invasion of personal privacy. Name of Committee: National Institute of Environmental...

The ELIMED transport and dosimetry beamline for laser-driven ion beams

Czech Academy of Sciences Publication Activity Database

Romano, F.; Schillaci, F.; Cirrone, G.A.P.; Cuttone, G.; Scuderi, Valentina; Allegra, L.; Amato, A.; Amico, A.; Candiano, G.; De Luca, G.; Gallo, G.; Giordanengo, S.; Guarachi, L.F.; Korn, Georg; Larosa, G.; Leanza, R.; Manna, R.; Marchese, V.; Marchetto, F.; Margarone, Daniele; Milluzzo, G.; Petringa, G.; Pipek, J.; Pulvirenti, S.; Rizzo, D.; Sacchi, R.; Salamone, S.; Sedita, M.; Vignati, A.

2016-01-01

Roč. 829, Sep (2016), s. 153-158 ISSN 0168-9002 R&D Projects: GA MŠk LQ1606; GA MŠk EF15_008/0000162; GA MŠk EE2.3.30.0057; GA ČR(CZ) GA15-02964S; GA MŠk ED1.1.00/02.0061 Grant - others:ELI Beamlines(XE) CZ.02.1.01/0.0/0.0/15_008/0000162; OP VK 4 POSTDOK(XE) CZ.1.07/2.3.00/30.0057; ELI Beamlines(XE) CZ.1.05/1.1.00/02.0061 Institutional support: RVO:68378271 Keywords : laser-driven beams * beam handling Subject RIV: BL - Plasma and Gas Discharge Physics Impact factor: 1.362, year: 2016

AILES: the infrared and THz beamline on SOLEIL synchrotron radiation source

International Nuclear Information System (INIS)

Roy, P.; Brubach, J.B.; Rouzieres, M.; Pirali, O.; Kwabia Tchana, F.; Manceron, L.

2008-01-01

The development of a new infrared beamline (ligne de lumiere AILES) at the third generation Synchrotron Radiation source SOLEIL is underway. This beamline utilizes infrared synchrotron radiation from both the edge emission and the constant field conventional source. The expected performances including flux, spatial distribution of the photons, spectral range and stability are calculated and discussed. The optical system, spectroscopic stations and workspace are described. The calculation in the near field approach and the simulation by ray tracing show that the source with its adapted optics offers high flux and brilliance for a variety of infrared experiments. We also review the main research themes and the articulation and developments of the infrared sources at SOLEIL. (authors)

Journal of Applied Sciences and Environmental Management ...

African Journals Online (AJOL)

Journal of Applied Sciences and Environmental Management. ... Types Of Contributions. Original research papers; review articles; case studies and short communications. 3. Copyright ... Example: Chukwu, M; Olusegun, AW; Mohammed, SSD.

Aberration analysis calculations for synchrotron radiation beamline design

International Nuclear Information System (INIS)

McKinney, W.R.; Howells, M.; Padmore, H.A.

1997-09-01

The application of ray deviation calculations based on aberration coefficients for a single optical surface for the design of beamline optical systems is reviewed. A systematic development is presented which allows insight into which aberration may be causing the rays to deviate from perfect focus. A new development allowing analytical calculation of line shape is presented

Developing Preservice Science Teachers' Self-Determined Motivation toward Environment through Environmental Activities

Science.gov (United States)

Karaarslan, Guliz; Sungur, Semra; Ertepinar, Hamide

2014-01-01

The aim of this study was to develop pre-service science teachers' self-determined motivation toward environment before, after and five months following the environmental course activities guided by self-determination theory. The sample of the study was 33 pre-service science teachers who participated in an environmental science course. This…

Gas delivery system and beamline studies for the test beam facility of the Collider Detector at Fermilab

International Nuclear Information System (INIS)

Franke, H.G. III.

1987-12-01

A fixed-target test beam facility has been designed and constructed at the Meson Test (MT) site to support studies of components of the Collider Detector at Fermi National Accelerator Laboratory (CDF). I assisted in the design and constuction of the test beam facility gas delivery system, and I conducted the initial studies to document the ability of the MT beamline to meet the needs of CDF. Analysis of the preliminary performance data on MT beamline components and beam tunes at required particle energies is presented. Preliminary studies show that the MT beamline has the necessary flexibility to satisfy most CDF requirements now

Do natural science experiments influence public attitudes towards environmental problems?

International Nuclear Information System (INIS)

Wallner, A.; Hunziker, M.; Kienast, F.

2003-01-01

We investigated the significance of risk assessment studies in the public discussion on CO 2 emissions. Politicians and representatives from the public were interviewed by using the social-science technique of qualitative in-depth interviews. Three different types of attitudes towards natural science were found among politicians. Depending on which attitude a politician holds, risk assessment studies can have an impact on his/her readiness to support environmental policy measures. Regarding lay people, key factors affecting the acceptance of environmental policy measures are knowledge of environmental problems, their impacts on ecosystems or human health as well as direct personal perception of those impacts. Since direct perception is not always possible in everyday life, natural science experiments might be a means for successfully mediating this lacking perception. (author)

Service-Learning in the Environmental Sciences for Teaching Sustainability Science

Science.gov (United States)

Truebe, S.; Strong, A. L.

2016-12-01

Understanding and developing effective strategies for the use of community-engaged learning (service-learning) approaches in the environmental geosciences is an important research need in curricular and pedagogical innovation for sustainability. In 2015, we designed and implemented a new community-engaged learning practicum course through the Earth Systems Program in the School of Earth, Energy and Environmental Sciences at Stanford University focused on regional open space management and land stewardship. Undergraduate and graduate students partnered with three different regional land trust and environmental stewardship organizations to conduct quarter-long research projects ranging from remote sensing studies of historical land use, to fire ecology, to ranchland management, to volunteer retention strategies. Throughout the course, students reflected on the decision-making processes and stewardship actions of the organizations. Two iterations of the course were run in Winter and Fall 2015. Using coded and analyzed pre- and post-course student surveys from the two course iterations, we evaluate undergraduate and graduate student learning outcomes and changes in perceptions and understanding of sustainability science. We find that engagement with community partners to conduct research projects on a wide variety of aspects of open space management, land management, and environmental stewardship (1) increased an understanding of trade-offs inherent in sustainability and resource management and (2) altered student perceptions of the role of scientific information and research in environmental management and decision-making. Furthermore, students initially conceived of open space as purely ecological/biophysical, but by the end of the course, (3) their understanding was of open space as a coupled human/ecological system. This shift is crucial for student development as sustainability scientists.

Design of a dedicated beamline for THz coherent synchrotron radiation at UVSOR-III

International Nuclear Information System (INIS)

Kimura, Shin-ichi; Nakamura, Eiken; Imura, Keiichiro; Katoh, Masahiro; Hosaka, Masahito; Takahashi, Toshiharu

2012-01-01

We report the design of a THz beamline for coherent synchrotron radiation (CSR) at the UVSOR-III very-low-emittance synchrotron radiation light source. The emitted THz-CSR is collected by a three-dimensional 'magic mirror', which is a perfect collecting mirror for bending-magnet radiation with an acceptance angle of 288 mrad (H) × 80 mrad (V). A quasi-monochromatic THz-CSR with an average flux of 104 μW/0.1 % b.w. and a peak power of 120 nJ/pulse/0.1 % b.w. is expected at the beamline.

Environmental Molecular Sciences Laboratory 2004 Annual Report

Energy Technology Data Exchange (ETDEWEB)

White, Julia C.

2005-04-17

This 2004 Annual Report describes the research and accomplishments of staff and users of the W.R. Wiley Environmental Molecular Sciences Laboratory (EMSL), located in Richland, Washington. EMSL is a multidisciplinary, national scientific user facility and research organization, operated by Pacific Northwest National Laboratory (PNNL) for the U.S. Department of Energy's Office of Biological and Environmental Research. The resources and opportunities within the facility are an outgrowth of the U.S. Department of Energy's (DOE) commitment to fundamental research for understanding and resolving environmental and other critical scientific issues.

1. National Congress of Environmental Science: Abstracts

International Nuclear Information System (INIS)

1995-01-01

The First National Congress of Environmental Sciences had a plural participation in the environmental thematic. The public universities and the research institutes of the different states of Mexico submitted papers containing proposals of scientific and technological solutions to the problems of management of hazardous wastes: water and land pollution; new methods of evaluation to pollutants of air and water; protection and conservation of relevant species of the ecology; control of genetic alterations; development and conservation of natural resources, and environmental education. Another part of the abstracts is dedicated to the posters session (Author)

CARNAÚBA: The Coherent X-Ray Nanoprobe Beamline for the Brazilian Synchrotron SIRIUS/LNLS

Science.gov (United States)

Tolentino, Hélio C. N.; Soares, Márcio M.; Perez, Carlos A.; Vicentin, Flávio C.; Abdala, Dalton B.; Galante, Douglas; Teixeira, Verônica de C.; de Araújo, Douglas H. C.; Westfahl, Harry, Jr.

2017-06-01

The CARNAÚBA beamline is the tender-to-hard X-ray (2 - 15 keV) scanning nanoprobe planned for the 4th generation storage ring SIRIUS at the LNLS. CARNAÚBA uses an undulator source with vertical linear polarization in a low-beta straight section and grazing incidence-focusing mirrors to create a nanoprobe at 143 m from the source. The beamline optic is based on KB mirrors and provides high brilliance at an achromatic focal spot down to the diffraction limit diameter of ˜30 nm with a working distance of ˜6 cm. These characteristics are crucial for studying nanometric samples in experiments involving complex stages and environments. The CARNAÚBA beamline aims to perform raster scans using x-ray fluorescence, x-ray absorption spectroscopy, x-ray diffraction and coherent x-ray imaging techniques. Computed tomography will extend these methods to three dimensions.

Crafting Disaster Risk Science: Environmental and geographical science sans frontières

Directory of Open Access Journals (Sweden)

Ailsa Holloway

2009-11-01

Full Text Available In keeping with the University of Cape Town’s commitment to social responsiveness (http://www.socialresponsiveness.uct.ac.za/, this article traces the process that underpinned the development and introduction of a postgraduate programme in Disaster Risk Science (DRS. It foregrounds the programme’s conceptualisation within the Department of Environmental and Geographical Science (EGS at the University of Cape Town (UCT, with particular emphasis on examining how disciplinary and theoretical coherence was balanced with cross-disciplinary application and social responsiveness. The article begins by describing the contextual conditions external to UCT’s formal teaching and learning environment that provided the necessary impetus for the new programme. It also traces the iterative relationship between context and curriculum that occurred over the period 1998–2008. This engagement was facilitated and mediated by the Disaster Mitigation for Sustainable Livelihoods Programme (DiMP, an interfacing research and advocacy unit, located within UCT’s Department of Environmental and Geographical Science. An explanation of subsequent content and sequencing of the postgraduate curriculum then follow. They illustrate the programme’s articulation with South Africa’s newly promulgated disaster management legislation, as well as its relevance and rigour in relation to the complex risk environment of South Africa’s Western Cape. The article specifically applies a transdisciplinary lens to the new programmme, in which Disaster Risk Science is conceptualized as a Mode 2 knowledge, but one that draws theoretically and methodologically on environmental and geographical science as its foundation or Mode 1 domain. It concludes by examining the DRS programme’s positive contributions both to scholarship and local risk management practices as well as the obstacles that constrained the new programme and continue to challenge its institutional sustainability.

Eight statements on environmental research in the social sciences

International Nuclear Information System (INIS)

Prittwitz, V.

1985-01-01

Social science research on environmental problems has two main tasks: (1) to provide critical practice-oriented contributions to present and threatening environmental problems, and (2) to draw the humans-and-nature problematique into social science concepts and theoretical frameworks. In this paper, the prerequisites for achieving both tasks as well as the theoretical, political, and institutional aspects that affect them are discussed. The focus of the discussion is the interdependence between practical problem solving and development of theory. (orig.) [de

Science and Mathematics Teacher Candidates' Environmental Knowledge, Awareness, Behavior and Attitudes

Science.gov (United States)

Yumusak, Ahmet; Sargin, Seyid Ahmet; Baltaci, Furkan; Kelani, Raphael R.

2016-01-01

The purpose of this study was to measure science and mathematics teacher candidates' environmental knowledge level, awareness, behavior and environmental attitudes. Four instruments comprising Environmental Sensitivity Scale, environmental Behavior Scale, Environmental Attitudes Scale and Environmental Knowledge Test were administered to a total…

Ultrabroadband terahertz source and beamline based on coherent transition radiation

Directory of Open Access Journals (Sweden)

S. Casalbuoni

2009-03-01

Full Text Available Coherent transition radiation (CTR in the THz regime is an important diagnostic tool for analyzing the temporal structure of the ultrashort electron bunches needed in ultraviolet and x-ray free-electron lasers. It is also a powerful source of such radiation, covering an exceptionally broad frequency range from about 200 GHz to 100 THz. At the soft x-ray free-electron laser FLASH we have installed a beam transport channel for transition radiation (TR with the intention to guide a large fraction of the radiation to a laboratory outside the accelerator tunnel. The radiation is produced on a screen inside the ultrahigh vacuum beam pipe of the linac, coupled out through a diamond window and transported to the laboratory through an evacuated tube equipped with five focusing and four plane mirrors. The design of the beamline has been based on a thorough analysis of the generation of TR on metallic screens of limited size. The optical propagation of the radiation has been computed taking into account the effects of near-field (Fresnel diffraction. The theoretical description of the TR source is presented in the first part of the paper, while the design principles and the technical layout of the beamline are described in the second part. First experimental results demonstrate that the CTR beamline covers the specified frequency range and preserves the narrow time structure of CTR pulses emitted by short electron bunches.

Human/Nature Discourse in Environmental Science Education Resources

Science.gov (United States)

Chambers, Joan M.

2008-01-01

It is argued that the view of nature and the relationship between human beings and nature that each of us holds impacts our decisions, actions, and notions of environmental responsibility and consciousness. In this study, I investigate the discursive patterns of selected environmental science classroom resources produced by three disparate…

Ultra-high performance mirror systems for the imaging and coherence beamline I13 at the Diamond Light Source

Science.gov (United States)

Wagner, U. H.; Alcock, S.; Ludbrook, G.; Wiatryzk, J.; Rau, C.

2012-05-01

I13L is a 250m long hard x-ray beamline (6 keV to 35 keV) currently under construction at the Diamond Light Source. The beamline comprises of two independent experimental endstations: one for imaging in direct space using x-ray microscopy and one for imaging in reciprocal space using coherent diffraction based imaging techniques. To minimise the impact of thermal fluctuations and vibrations onto the beamline performance, we are developing a new generation of ultra-stable beamline instrumentation with highly repeatable adjustment mechanisms using low thermal expansion materials like granite and large piezo-driven flexure stages. For minimising the beam distortion we use very high quality optical components like large ion-beam polished mirrors. In this paper we present the first metrology results on a newly designed mirror system following this design philosophy.

Choosing and Using Images in Environmental Science Education

Science.gov (United States)

Muthersbaugh, Debbie Smick

2012-01-01

Although using images for teaching has been a common practice in science classrooms (Gordon & Pea, 1995) understanding the purpose or how to choose images has not typically been intentional. For this dissertation three separate studies relating to choosing and using images are prepared with environmental science in mind. Each of the studies…

Environmental Sciences Division annual progress report for period ending September 30, 1982. Environmental Sciences Division Publication No. 2090. [Lead abstract

Energy Technology Data Exchange (ETDEWEB)

1983-04-01

Separate abstracts were prepared for 12 of the 14 sections of the Environmental Sciences Division annual progress report. The other 2 sections deal with educational activities. The programs discussed deal with advanced fuel energy, toxic substances, environmental impacts of various energy technologies, biomass, low-level radioactive waste management, the global carbon cycle, and aquatic and terrestrial ecology. (KRM)

G4beamline Simulations for H8

CERN Document Server

Thoresen, Freja

2015-01-01

Detailed simulations of the H8 beam line at the North Area, using the G4beamline software were performed in the framework of this study. The conventions used by the program are analysed. Having modelled precisely the beam line, several studies examining the beam transmission and composition were performed. The results were compared with measurements, where a satisfactory agreement was found. The muon production and transport is studied in details throughout the beam line.

Successful test of SPS-to-LHC beamline

CERN Multimedia

Maximilien Brice

2004-01-01

On 23 October there was great excitement in the Prevessin control room when, on the first attempt, a beam passed over 2.5 km down the new SPS-to-LHC transfer line, TI8, to within a few metres of the LHC tunnel. Members of the AB, AT and TS departments involved in the beamline and its test, celebrate their success with the Director General, Robert Aymar, and the LHC Project Leader, Lyn Evans.

Successful test of SPS-to-LHC beamline

CERN Multimedia

2004-01-01

On 23 October there was great excitement in the Prevessin control room when, on the first attempt, a beam passed over 2.5 km down the new SPS-to-LHC transfer line, TI8, to within a few metres of the LHC tunnel. Above: members of the AB, AT and TS departments involved in the beamline and its test, celebrate their success with the Director General, Robert Aymar, and the LHC Project Leader, Lyn Evans.

Leaving the classroom: a didactic framework for education in environmental sciences

Science.gov (United States)

Dopico, Eduardo; Garcia-Vazquez, Eva

2011-06-01

In Continuous Education curricula in Spain, the programs on sciences of the environment are aimed toward understandings of sustainability. Teaching practice rarely leaves the classroom for outdoor field studies. At the same time, teaching practice is generally focused on examples of how human activities are harmful for ecosystems. From a pedagogic point of view, it is less effective to teach environmental science with negative examples such as catastrophe, tragedy, and crisis. Rather, teaching environmental sciences and sustainable development might be focused on positive human-environment relationships, which is both important for the further development of students and educators. Within rural settings, there are many such examples of positive relationships that can be emphasized and integrated into the curriculum. In this article, we propose teaching environmental sciences through immersion in rural cultural life. We discuss how fieldwork serves as a learning methodology. When students are engaged through research with traditional cultural practices of environmental management, which is a part of the real and traditional culture of a region, they better understand how positive pedagogy instead of pedagogy structured around how not-to-do examples, can be used to stimulate the interactions between humans and the environment with their students. In this way, cultural goods serve as teaching resources in science and environmental education. What we present is authentic cases where adults involved in a course of Continuous Education explore `environmentally-friendly' practices of traditional agriculture in Asturias (north of Spain), employing methodologies of cultural studies.

A Superbend X-Ray Microdiffraction Beamline at the Advanced Light Source

Energy Technology Data Exchange (ETDEWEB)

Tamura, N.; Kunz, M.; Chen, K.; Celestre, R.S.; MacDowell, A.A.; Warwick, T.

2009-03-10

Beamline 12.3.2 at the Advanced Light Source is a newly commissioned beamline dedicated to x-ray microdiffraction. It operates in both monochromatic and polychromatic radiation mode. The facility uses a superconducting bending magnet source to deliver an X-ray spectrum ranging from 5 to 22 keV. The beam is focused down to {approx} 1 um size at the sample position using a pair of elliptically bent Kirkpatrick-Baez mirrors enclosed in a vacuum box. The sample placed on high precision stages can be raster-scanned under the microbeam while a diffraction pattern is taken at each step. The arrays of diffraction patterns are then analyzed to derive distribution maps of phases, strain/stress and/or plastic deformation inside the sample.

Fully automated data collection and processing system on macromolecular crystallography beamlines at the PF

International Nuclear Information System (INIS)

Yamada, Yusuke; Hiraki, Masahiko; Matsugaki, Naohiro; Chavas, Leonard M.G.; Igarashi, Noriyuki; Wakatsuki, Soichi

2012-01-01

Fully automated data collection and processing system has been developed on macromolecular crystallography beamlines at the Photon Factory. In this system, the sample exchange, centering and data collection are sequentially performed for all samples stored in the sample exchange system at a beamline without any manual operations. Data processing of collected data sets is also performed automatically. These results are stored into the database system, and users can monitor the progress and results of automated experiment via a Web browser. (author)

Beamline standard component designs for the Advanced Photon Source

International Nuclear Information System (INIS)

Shu, D.; Barraza, J.; Brite, C.; Chang, J.; Sanchez, T.; Tcheskidov, V.; Kuzay, T.M.

1994-01-01

The Advanced Photon Source (APS) has initiated a design standardization and modularization activity for the APS synchrotron radiation beamline components. These standard components are included in components library, sub-components library and experimental station library. This paper briefly describes these standard components using both technical specifications and side view drawings

Description and calibration beamline SEM/Ion Chamber Current Digitizer

International Nuclear Information System (INIS)

Schoo, D.

1994-05-01

This report discusses the following on beamline SEM/ion chamber current digitizers: Module description; testing and calibration; common setup procedures; summary of fault indications and associated causes; summary of input and output connections; SEM conversion constant table; ion chamber conversion constant table; hexadecimal to decimal conversion table; and schematic diagram

The CAT-ACT Beamline at ANKA: A new high energy X-ray spectroscopy facility for CATalysis and ACTinide research

Science.gov (United States)

Zimina, A.; Dardenne, K.; Denecke, M. A.; Grunwaldt, J. D.; Huttel, E.; Lichtenberg, H.; Mangold, S.; Pruessmann, T.; Rothe, J.; Steininger, R.; Vitova, T.

2016-05-01

A new hard X-ray beamline for CATalysis and ACTinide research has been built at the synchrotron radiation facility ANKA. The beamline design is dedicated to X-ray spectroscopy, including ‘flux hungry’ photon-in/photon-out and correlative techniques with a special infrastructure for radionuclide and catalysis research. The CAT-ACT beamline will help serve the growing need for high flux/hard X-ray spectroscopy in these communities. The design, the first spectra and the current status of this project are reported.

75 FR 41506 - National Institute of Environmental Health Sciences; Notice of Closed Meeting

Science.gov (United States)

2010-07-16

... Environmental Health Sciences; Notice of Closed Meeting Pursuant to section 10(d) of the Federal Advisory... Sciences; 93.113, Biological Response to Environmental Health Hazards; 93.114, Applied Toxicological... clearly unwarranted invasion of personal privacy. Name of Committee: National Institute of Environmental...

A new approach to environmental education: environment-challenge for science, technology and society

International Nuclear Information System (INIS)

Popovic, D.

2002-01-01

The paper presents a new approach to environmental education within the project Environment: Challenge for Science, Technology and Education, realized on the Alternative Academic Education Network (AAEN) in Belgrade. The project is designed for graduate or advanced undergraduate students of science, medicine, engineering, biotechnology, political and law sciences. It is multidisciplinary and interdisciplinary project aimed to support students interest in different areas of the environmental sciences through strong inter-connection between modern scientific ideas, technological achievements and society. The project contains four basic courses (Living in the Environment; Physical and Chemical Processes in the Environment; Industrial Ecology and Sustainable Development; Environmental Philosophy and Ethics) and a number of elective courses dealing with environmental biology, adaptation processes , global eco politics, environmental ethics, scientific and public policy, environmental consequences of warfare, environmental pollution control, energy management, environmental impact assessment, etc. The standard ex catedra teaching is replaced with active student-teacher communication method enabling students to participate actively in the subject through seminars, workshops, short essays and individual research projects

Investigation of collisional effects within the bending magnet region of a DIII-D neutral beamline

International Nuclear Information System (INIS)

Kessler, D.N.; Hong, R.; Kellman, D.H.

1993-10-01

The region between the pole faces of the DIII-D neutral beamline residual ion bending magnets is an area of transient high gas pressure which may cause beam defocusing and increased heating of beamline internal components due to collisional effects. An investigation of these effects helps in understanding residual ion trajectories and in providing information for studying in the beamline capability for operation with increased pulse duration. Examination of collisional effects, and of the possible existence of space charge blow-up, was carried out by injecting deuterium gas into the region between the magnet pole faces with rates varying from 0 to 18 torr-ell/sec. Thermocouple and waterflow calorimetry data were taken to measure the beamline component heating and beam powder deposition on the magnet pole shields, magnet louvers, ion dump, beam collimators, and calorimeter. Data was also taken at gas flow rates varying from 0 to 25 torr-ell/sec into the neutralizer cell and is compared with the magnet region gas injection data obtained. Results show that both collisional effects and space charge blow-up play a role in magnet region component heating and that neutralizer gas flow sufficiently reduces component heating without incurring unacceptable power losses through collisional effects

Improvement of Students’ Environmental Literacy by Using Integrated Science Teaching Materials

Science.gov (United States)

Suryanti, D.; Sinaga, P.; Surakusumah, W.

2018-02-01

This study aims to determine the improvement of student environmental literacy through the use of integrated science teaching materials on pollution topics. The research is used weak experiment method with the one group pre-test post-test design. The sample of the study were junior high school students in Bandung amounted to 32 people of 7th grade. Data collection in the form of environmental literacy test instrument consist of four components of environmental literacy that is (1) Knowledge, (2) Competencies (Cognitive Skill), (3) Affective and (4) Environmentally Responsible Behavior. The results show that the student’s environmental literacy ability is improved after using integrated science teaching materials. An increase in the medium category is occurring in the knowledge (N-gain=46%) and cognitive skill (N-gain=31%), while the increase in the low category occurs in the affective component (N-gain=25%) and behaviour (N-gain=24%). The conclusions of this study as a whole the improvement of students’ environmental literacy by using integrated science teaching material is in the medium category (N-gain=34%).

Strengthening Science-based Environmental Policy Development in ...

International Development Research Centre (IDRC) Digital Library (Canada)

Strengthening Science-based Environmental Policy Development in Burma's Democratic ... IDRC is providing funding to Simon Fraser University to support a network of ... The project will also encourage and assist in the creation of a business ...

Journal of Applied Sciences and Environmental Management

African Journals Online (AJOL)