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Title: The Spallation Neutron Source: A powerful tool for materials research

Abstract

When completed in 2006, the Spallation Neutron Source (SNS) will use an accelerator to produce the most intense beams of pulsed neutrons in the world. This unique facility is being built by a collaboration of six US Department of Energy laboratories and will serve a diverse community of users drawn from academia, industry, and government labs. The project continues on schedule and within budget, with commissioning and installation of all systems going well. Installation of 14 state-of-the-art instruments is under way, and design work is being completed for several others. These new instruments will enable inelastic and elastic-scattering measurements across a broad range of science such as condensed-matter physics, chemistry, engineering materials, biology, and beyond. Neutron Science at SNS will be complemented by research opportunities at several other facilities under way at Oak Ridge National Laboratory.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [2];  [1];  [3];  [1]
  1. ORNL
  2. University of Illinois, Chicago
  3. Forschungszentrum Julich, Julich, Germany
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Spallation Neutron Source (SNS)
Sponsoring Org.:
USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE Office of Science (SC)
OSTI Identifier:
961755
DOE Contract Number:
DE-AC05-00OR22725
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physica B: Condensed Matter; Journal Volume: 385-386; Journal Issue: 2
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; ACCELERATORS; BEAMS; COMMISSIONING; NEUTRON SOURCES; NEUTRON SOURCE FACILITIES; ORNL; SPALLATION

Citation Formats

Mason, Thom, Anderson, Ian S, Ankner, John Francis, Egami, Takeshi, Ekkebus, Allen E, Herwig, Kenneth W, Hodges, Jason P, Horak, Charlie M, Horton, Linda L, Klose, Frank Richard, Mesecar, Andrew D., Myles, Dean A A, Ohl, M., and Zhao, Jinkui. The Spallation Neutron Source: A powerful tool for materials research. United States: N. p., 2006. Web. doi:10.1016/j.physb.2006.05.281.
Mason, Thom, Anderson, Ian S, Ankner, John Francis, Egami, Takeshi, Ekkebus, Allen E, Herwig, Kenneth W, Hodges, Jason P, Horak, Charlie M, Horton, Linda L, Klose, Frank Richard, Mesecar, Andrew D., Myles, Dean A A, Ohl, M., & Zhao, Jinkui. The Spallation Neutron Source: A powerful tool for materials research. United States. doi:10.1016/j.physb.2006.05.281.
Mason, Thom, Anderson, Ian S, Ankner, John Francis, Egami, Takeshi, Ekkebus, Allen E, Herwig, Kenneth W, Hodges, Jason P, Horak, Charlie M, Horton, Linda L, Klose, Frank Richard, Mesecar, Andrew D., Myles, Dean A A, Ohl, M., and Zhao, Jinkui. Sun . "The Spallation Neutron Source: A powerful tool for materials research". United States. doi:10.1016/j.physb.2006.05.281.
@article{osti_961755,
title = {The Spallation Neutron Source: A powerful tool for materials research},
author = {Mason, Thom and Anderson, Ian S and Ankner, John Francis and Egami, Takeshi and Ekkebus, Allen E and Herwig, Kenneth W and Hodges, Jason P and Horak, Charlie M and Horton, Linda L and Klose, Frank Richard and Mesecar, Andrew D. and Myles, Dean A A and Ohl, M. and Zhao, Jinkui},
abstractNote = {When completed in 2006, the Spallation Neutron Source (SNS) will use an accelerator to produce the most intense beams of pulsed neutrons in the world. This unique facility is being built by a collaboration of six US Department of Energy laboratories and will serve a diverse community of users drawn from academia, industry, and government labs. The project continues on schedule and within budget, with commissioning and installation of all systems going well. Installation of 14 state-of-the-art instruments is under way, and design work is being completed for several others. These new instruments will enable inelastic and elastic-scattering measurements across a broad range of science such as condensed-matter physics, chemistry, engineering materials, biology, and beyond. Neutron Science at SNS will be complemented by research opportunities at several other facilities under way at Oak Ridge National Laboratory.},
doi = {10.1016/j.physb.2006.05.281},
journal = {Physica B: Condensed Matter},
number = 2,
volume = 385-386,
place = {United States},
year = {Sun Jan 01 00:00:00 EST 2006},
month = {Sun Jan 01 00:00:00 EST 2006}
}
  • The wavelengths and energies of thermal and cold neutrons are ideally matched to the length and energy scales in the materials that underpin technologies of the present and future: ranging from semiconductors to magnetic devices, composites to biomaterials and polymers. The Spallation Neutron Source will use an accelerator to produce the most intense beams of neutrons in the world when it is complete in 2006. The project is being built by a collaboration of six U.S. Department of Energy laboratories. It will serve a diverse community of users drawn from academia, industry, and government labs with interests in condensed mattermore » physics, chemistry, engineering materials, biology, and beyond.« less
  • A large experimental program was initiated at GSI to study in detail the spallation reactions. The use of the inverse kinematics allows to determine the production cross section and recoil momentum of the spallation residues with high accuracy. The comparison of the experimental data with model calculation gives valuable information about the reaction mechanism and the application of these reactions to RNB production and to the problematic of nuclear waste transmutation.
  • We have constructed an apparatus to study DC electrical breakdown in liquid helium at temperatures as low as 0.4 K and at pressures between the saturated vapor pressure and ∼600 Torr. The apparatus can house a set of electrodes that are 12 cm in diameter with a gap of 1–2 cm between them, and a potential up to ±50 kV can be applied to each electrode. Initial results demonstrated that it is possible to apply fields exceeding 100 kV/cm in a 1 cm gap between two electropolished stainless steel electrodes 12 cm in diameter for a wide range of pressuresmore » at 0.4 K. We also measured the current between two electrodes. Our initial results, I < 1 pA at 45 kV, correspond to a lower bound on the effective volume resistivity of liquid helium of ρ{sub V} > 5 × 10{sup 18} Ω cm. This lower bound is 5 times larger than the bound previously measured. We report the design, construction, and operational experience of the apparatus, as well as initial results.« less
  • In this study, we have constructed an apparatus to study DC electrical breakdown in liquid helium at temperatures as low as 0.4 K and at pressures between the saturated vapor pressure and ~600 Torr. The apparatus can house a set of electrodes that are 12 cm in diameter with a gap of 1–2 cm between them, and a potential up to ±50 kV can be applied to each electrode. Initial results demonstrated that it is possible to apply fields exceeding 100 kV/cm in a 1 cm gap between two electropolished stainless steel electrodes 12 cm in diameter for a widemore » range of pressures at 0.4 K. We also measured the current between two electrodes. Our initial results, I < 1 pA at 45 kV, correspond to a lower bound on the effective volume resistivity of liquid helium of ρ V > 5 × 10 18 Ω cm. This lower bound is 5 times larger than the bound previously measured. Finally, we report the design, construction, and operational experience of the apparatus, as well as initial results« less