New developments in the McStas neutron instrument simulation package

International Workshop on Neutron Optics and Detectors

Willendrup, P.K.^1 ; Knudsen, E.B.^1 ; Klinkby, E.^2 ; Nielsen, T.^3,6 ; Farhi, E.^4 ; Filges, U.^5 ; Lefmann, K.^6

NEXMAP, Physics Department, Technical University of Denmark, Denmark^1

Center for Nuclear Technologies, Technical University of Denmark, Denmark^2

ESS-DMSC, Copenhagen, Denmark^3

Institut Laue-Langevin (ILL), France^4

Paul Scherrer Institute (PSI), Switzerland^5

Niels Bohr Institute (NBI), University of Copenhagen, Denmark^6

关键词: Backward compatibility;    Collaborative codes;    Component parameters;    Design and optimization;    European spallation sources;    Neutron instrument simulation packages;    Neutron scattering instruments;    Virtual experiments;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/528/1/012035/pdf
DOI  :  10.1088/1742-6596/528/1/012035

来源: IOP

【 摘 要 】

The McStas neutron ray-tracing software package is a versatile tool for building accurate simulators of neutron scattering instruments at reactors, short- and long-pulsed spallation sources such as the European Spallation Source. McStas is extensively used for design and optimization of instruments, virtual experiments, data analysis and user training. McStas was founded as a scientific, open-source collaborative code in 1997. This contribution presents the project at its current state and gives an overview of the main new developments in McStas 2.0 (December 2012) and McStas 2.1 (expected fall 2013), including many new components, component parameter uniformisation, partial loss of backward compatibility, updated source brilliance descriptions, developments toward new tools and user interfaces, web interfaces and a new method for estimating beam losses and background from neutron optics.