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Analysing neutron scattering data using McStas virtual experiments

Udby, L.; Willendrup, P. K.; Knudsen, E.; Niedermayer, Ch.; Filges, U.; Christensen, N. B.; Farhi, E.; Wells, B. O. and Lefmann, Kim LU (2011) International Workshop on Neutron Optics In Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 634. p.138-143
Abstract
With the intention of developing a new data analysis method using virtual experiments we have built a detailed virtual model of the cold triple-axis spectrometer RITA-II at PSI, Switzerland, using the McStas neutron ray-tracing package. The parameters characterising the virtual instrument were carefully tuned against real experiments. In the present paper we show that virtual experiments reproduce experimentally observed linewidths within 1-3% for a variety of samples. Furthermore we show that the detailed knowledge of the instrumental resolution found from virtual experiments, including sample mosaicity, can be used for quantitative estimates of linewidth broadening resulting from, e.g., finite domain sizes in single-crystal samples. (C)... (More)
With the intention of developing a new data analysis method using virtual experiments we have built a detailed virtual model of the cold triple-axis spectrometer RITA-II at PSI, Switzerland, using the McStas neutron ray-tracing package. The parameters characterising the virtual instrument were carefully tuned against real experiments. In the present paper we show that virtual experiments reproduce experimentally observed linewidths within 1-3% for a variety of samples. Furthermore we show that the detailed knowledge of the instrumental resolution found from virtual experiments, including sample mosaicity, can be used for quantitative estimates of linewidth broadening resulting from, e.g., finite domain sizes in single-crystal samples. (C) 2010 Elsevier B.V. All rights reserved. (Less)
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author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
Virtual experiments, Neutron triple axis spectrometers, Deconvolution, of finite-size effects, Resolution
in
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
volume
634
pages
138 - 143
publisher
Elsevier
conference name
International Workshop on Neutron Optics
external identifiers
  • wos:000290355100031
  • scopus:79952984983
ISSN
0168-9002
DOI
10.1016/j.nima.2010.06.235
language
English
LU publication?
yes
id
b36a9f27-2f50-480b-94b5-cda2cdba45d8 (old id 1987667)
date added to LUP
2011-06-29 09:17:51
date last changed
2017-11-05 04:00:19
@inproceedings{b36a9f27-2f50-480b-94b5-cda2cdba45d8,
  abstract     = {With the intention of developing a new data analysis method using virtual experiments we have built a detailed virtual model of the cold triple-axis spectrometer RITA-II at PSI, Switzerland, using the McStas neutron ray-tracing package. The parameters characterising the virtual instrument were carefully tuned against real experiments. In the present paper we show that virtual experiments reproduce experimentally observed linewidths within 1-3% for a variety of samples. Furthermore we show that the detailed knowledge of the instrumental resolution found from virtual experiments, including sample mosaicity, can be used for quantitative estimates of linewidth broadening resulting from, e.g., finite domain sizes in single-crystal samples. (C) 2010 Elsevier B.V. All rights reserved.},
  author       = {Udby, L. and Willendrup, P. K. and Knudsen, E. and Niedermayer, Ch. and Filges, U. and Christensen, N. B. and Farhi, E. and Wells, B. O. and Lefmann, Kim},
  booktitle    = {Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment},
  issn         = {0168-9002},
  keyword      = {Virtual experiments,Neutron triple axis spectrometers,Deconvolution,of finite-size effects,Resolution},
  language     = {eng},
  pages        = {138--143},
  publisher    = {Elsevier},
  title        = {Analysing neutron scattering data using McStas virtual experiments},
  url          = {http://dx.doi.org/10.1016/j.nima.2010.06.235},
  volume       = {634},
  year         = {2011},
}