L773:1819 7094 OR L773:1027 4510
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Neutron Ray-Tracing Simulations of a New Supermirror Guide for the Osiris Spectrometer
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- Perrichon, Adrien, 1988 (author)
- Uppsala universitet,Institutionen för fysik och astronomi,Rutherford Appleton Lab, ISIS Facil, Didcot OX11 0QX, Oxon, England.
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- Fernandez-Alonso, F. (author)
- STFC Rutherford Appleton Laboratory,University College London (UCL),Rutherford Appleton Lab, ISIS Facil, Didcot OX11 0QX, Oxon, England.;UCL, Dept Phys & Astron, London WC1E 6BT, England.
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- Wolff, Max (author)
- Uppsala universitet,Institutionen för fysik och astronomi
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- PLEIADES PUBLISHING INC, 2020
- 2020
- English.
- In: Journal of Surface Investigation. - : PLEIADES PUBLISHING INC. - 1819-7094 .- 1027-4510. ; 14, s. S169-S174
- Journal article (peer-reviewed)
Abstract
Subject headings
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- A new supermirror guide has been proposed to replace the current neutron guide of the indirect time-of-flight near-backscattering spectrometer OSIRIS at the ISIS facility. Here we present an extensive Monte Carlo simulation study for the design and optimisation of a new guide system. Among the several guide geometry assessed, a curved guide with elliptical defocusing and focusing sections is shown to perform best. The estimated gain in intensity is a factor of 5–6 at the sample position with a homogeneous distribution of the divergence. The elliptic geometry results in a smaller beam spot and smaller samples will particularly benefit from this upgrade. The proposed guide replacement will ensure that the OSIRIS spectrometer will remain competitive in the years to come.
Subject headings
- NATURVETENSKAP -- Fysik -- Acceleratorfysik och instrumentering (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Accelerator Physics and Instrumentation (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Rymd- och flygteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Aerospace Engineering (hsv//eng)
- NATURVETENSKAP -- Matematik -- Sannolikhetsteori och statistik (hsv//swe)
- NATURAL SCIENCES -- Mathematics -- Probability Theory and Statistics (hsv//eng)
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Keyword
- quasielastic neutron scattering
- OSIRIS
- Monte Carlo simulations
- neutron spectrometer
Publication and Content Type
- art (subject category)
- ref (subject category)
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