[mcstas-users] Bugfix-release of the ESS_moderator.comp

[Peter Kjær Willendrup]

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



[cid:image002.gif at 01CCCAF1.5E6331F0]


Department of Physics
Fysikvej

Building 307

DK-2800 Kongens Lyngby

Direct +45 2125 4612

Mobil +45 2125 4612
Fax +45 4593 2399


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

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