Neutron Ray-Tracing Simulations of a New Supermirror Guide for the Osiris Spectrometer View Full Text


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Article Info

DATE

2020-10-08

AUTHORS

A. Perrichon, F. Fernandez-Alonso, M. Wolff, M. Karlsson, F. Demmel

ABSTRACT

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. More... »

PAGES

s169-s174

References to SciGraph publications

Identifiers

URI

http://scigraph.springernature.com/pub.10.1134/s1027451020070381

DOI

http://dx.doi.org/10.1134/s1027451020070381

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1131539895


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