From BASIS to MIRACLES: Benchmarking and perspectives for high-resolution neutron spectroscopy at the ESS

Nikolaos Tsapatsaris, Peter Kjær Willendrup, Ruep E. Lechner, Heloisa N. Bordallo

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Abstract

Results based on virtual instrument models for the first high-flux, high-resolution, spallation based, backscattering spectrometer, BASIS are presented in this paper. These were verified using the Monte Carlo instrument simulation packages McStas and VITESS. Excellent agreement of the neutron count rate at the sample position between the virtual instrument simulation and experiments was found, in both time and energy distributions. This achievement was only possible after a new component for a bent single crystal analyser in McStas, using a Gaussian approximation, was developed. These findings are pivotal to the conceptual design of the next generation backscattering spectrometer, MIRACLES at the European Spallation Source.
Original languageEnglish
Article number03015
JournalE P J Web of Conferences
Volume83
ISSN2100-014X
DOIs
Publication statusPublished - 2015
Event11th International Conference on Quasielastic Neutron Scattering / 6th International Workshop on Inelastic Neutron Spectrometers - Autrans, France
Duration: 11 May 201416 May 2014
Conference number: 11 / 6

Conference

Conference11th International Conference on Quasielastic Neutron Scattering / 6th International Workshop on Inelastic Neutron Spectrometers
Number11 / 6
CountryFrance
CityAutrans
Period11/05/201416/05/2014

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