Simulation of waviness in neutron guides

Ursula Bengård Hansen; Mads Bertelsen; Kim Lefmann; Erik Bergbäck Knudsen

doi:10.3233/JNR-150023

Simulation of waviness in neutron guides

Ursula Bengård Hansen, Mads Bertelsen, Kim Lefmann, Erik Bergbäck Knudsen

Xray and Neutron Science

3 Citations (Scopus)

Abstract

As the trend of neutron guide designs points towards longer and more complex guides, imperfections such as waviness becomes increasingly important. Simulations of guide waviness has so far been limited by a lack of reasonable waviness models. We here present a stochastic description of waviness and its implementation in the McStas simulation package. The effect of this new implementation is compared to the guide simulations without waviness and the simple, yet unphysical, waviness model implemented in McStas 1.12c and 2.0.

Original language	English
Article number	45-59
Journal	Journal of Neutron Research
Volume	18
Issue number	2-3
ISSN	1023-8166
DOIs	https://doi.org/10.3233/JNR-150023
Publication status	Published - 2016

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title = "Simulation of waviness in neutron guides",

abstract = "As the trend of neutron guide designs points towards longer and more complex guides, imperfections such as waviness becomes increasingly important. Simulations of guide waviness has so far been limited by a lack of reasonable waviness models. We here present a stochastic description of waviness and its implementation in the McStas simulation package. The effect of this new implementation is compared to the guide simulations without waviness and the simple, yet unphysical, waviness model implemented in McStas 1.12c and 2.0.",

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T1 - Simulation of waviness in neutron guides

AU - Hansen, Ursula Bengård

AU - Bertelsen, Mads

AU - Lefmann, Kim

AU - Bergbäck Knudsen, Erik

PY - 2016

Y1 - 2016

N2 - As the trend of neutron guide designs points towards longer and more complex guides, imperfections such as waviness becomes increasingly important. Simulations of guide waviness has so far been limited by a lack of reasonable waviness models. We here present a stochastic description of waviness and its implementation in the McStas simulation package. The effect of this new implementation is compared to the guide simulations without waviness and the simple, yet unphysical, waviness model implemented in McStas 1.12c and 2.0.

AB - As the trend of neutron guide designs points towards longer and more complex guides, imperfections such as waviness becomes increasingly important. Simulations of guide waviness has so far been limited by a lack of reasonable waviness models. We here present a stochastic description of waviness and its implementation in the McStas simulation package. The effect of this new implementation is compared to the guide simulations without waviness and the simple, yet unphysical, waviness model implemented in McStas 1.12c and 2.0.

U2 - 10.3233/JNR-150023

DO - 10.3233/JNR-150023

M3 - Journal article

SN - 1023-8166

VL - 18

JO - Journal of Neutron Research

JF - Journal of Neutron Research

IS - 2-3

M1 - 45-59

ER -

Simulation of waviness in neutron guides

Abstract

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