Design of a radial collimator for the SEQUOIA direct geometry chopper spectrometer

The SEQUOIA direct geometry chopper spectrometer at the Spallation Neutron Source is considering acquisition of a radial collimator. We present here Monte-Carlo calculations examining the proposed collimator's performance. Through comparison of calculations with and without sample environments...

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Bibliographic Details
Published in:Physica. B, Condensed matter Condensed matter, 2019-07, Vol.564 (C), p.17-21
Main Authors: Stone, M.B., Sala, G., Lin, J.Y.Y.
Format: Article
Language:English
Subjects:
Collimation
Geometry
Inelastic neutron scattering
Monte Carlo simulation
Neutron spectroscopy
Neutrons
Numerical analysis
Scientific apparatus & instruments
Spallation
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Summary:The SEQUOIA direct geometry chopper spectrometer at the Spallation Neutron Source is considering acquisition of a radial collimator. We present here Monte-Carlo calculations examining the proposed collimator's performance. Through comparison of calculations with and without sample environments in place, one can determine appropriate parameters to use in the collimator design. The numerical results provide enough detail to determine the angular collimation for the radial collimator.
ISSN:0921-4526
1873-2135
DOI:10.1016/j.physb.2018.11.042