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Applied Physics A

, Volume 74, Supplement 1, pp s1486–s1488 | Cite as

Optimization of the SNS magnetism reflectometer neutron-guide optics using Monte Carlo simulations

  • F. Klose
  • W.-T. Lee

Abstract.

The magnetism reflectometer at the spallation neutron source SNS will employ advanced neutron optics to achieve high data rate, improved resolution, and extended dynamic range. Optical components utilized will include a multi-channel polygonal curved bender and a tapered neutron-focusing guide section. The results of a neutron beam interacting with these devices are rather complex. Additional complexity arises due to the spectral/time-emission profile of the moderator and non-perfect neutron optical coatings. While analytic formulae for the individual components provide some design guidelines, a realistic performance assessment of the whole instrument can only be achieved by advanced simulation methods. In this contribution, we present guide optics optimizations for the magnetism reflectometer using Monte Carlo simulations. We compare different instrument configurations and calculate the resulting data rates.

PACS: 61.12.Ha; 07.05.Tp 

Copyright information

© Springer-Verlag 2002

Authors and Affiliations

  • F. Klose
    • 1
  • W.-T. Lee
    • 1
  1. 1.Spallation Neutron Source, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USAUS

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