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Proceedings Paper

Neutron instrument simulation and optimization using the software package VITESS
Author(s): Klaus Lieutenant; Geza Zsigmond; Sergey Manoshin; Michael Fromme; Heloisa N. Bordallo; Dickon Champion; Judith Peters; Ferenc Mezei
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Paper Abstract

The software package VITESS for the simulation of neutron scattering instruments is presented. The concept, the main features and the use of the program are described. The new features of version 2.5 are explained in detail. A survey of the existing modules is given. Particular emphasis is given to modules that are used to simulate optical components, such as 'supermirror ensemble', 'monochromator/analyser' or 'bender'. Examples of simulations of existing and planned instruments are presented, e.g. a powder diffractometer installed on a long pulse target station using wavelength frame multiplication. Simulation results of the existing instrument HET at ISIS are compared to experimental results. Furthermore, a view to the coming version 2.6 is presented. One of its features is discussed in detail: It will be possible to optimize parts of the instruments numerically. As a first application, focusing guides were optimized. General results of this method as well as results for a special instrument are shown. Finally, a general outlook to the planned developments of VITESS is presented.

Paper Details

Date Published: 21 October 2004
PDF: 12 pages
Proc. SPIE 5536, Advances in Computational Methods for X-Ray and Neutron Optics, (21 October 2004); doi: 10.1117/12.562814
Show Author Affiliations
Klaus Lieutenant, Hahn-Meitner Institut (Germany)
Geza Zsigmond, Hahn-Meitner Institut (Germany)
Paul Scherrer Institut (Switzerland)
Sergey Manoshin, Hahn-Meitner Institut (Germany)
Michael Fromme, Hahn-Meitner Institut (Germany)
Heloisa N. Bordallo, Hahn-Meitner Institut (Germany)
Dickon Champion, Rutherford Appleton Lab. (United Kingdom)
Judith Peters, Hahn-Meitner Institut (Germany)
Ferenc Mezei, Hahn-Meitner Institut (Germany)
Los Alamos National Lab. (United States)


Published in SPIE Proceedings Vol. 5536:
Advances in Computational Methods for X-Ray and Neutron Optics
Manuel Sanchez del Rio, Editor(s)

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