[NOBUGS] Bugfix-release of the ESS_moderator.comp

Peter Kjær Willendrup pkwi at fysik.dtu.dk
Thu Feb 19 10:00:26 GMT 2015


Dear all,


Jan Saroun from NPI in Czech Republic (and author of RESTRAX/SIMRES) has spotted an unfortunate error in the ESS_moderator.comp component, relating to the 2014 "pancake" case.

The bug is a missing distance-factor in a solid-angle computation and will lead to a too high brilliance emitted from the source.

Unfortunately was never spotted in our tests since these happen with an instrument where this distance is set to 1 m... (and 1 x 1 = 1... )

The updated source packge for use with McStas 1.12c and 2.x is available for download at http://mcstas.org/download/share/ESS_moderator_February_2015.tgz . A set of “release notes” is available at http://mcstas.org/download/share/ESS_moderator_February_2015.tgz.html


Best and sorry for any inconvenience this may cause,

Peter


Peter Kjær Willendrup
Senior Research Engineer, Special Advisor

DTU Physics



Technical University of Denmark



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Department of Physics
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Direct +45 2125 4612

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pkwi at fysik.dtu.dk<mailto:pkwi at fysik.dtu.dk>

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