| Re: Problem using EvtGen [message #10891 is a reply to message #10889] |
Mon, 26 July 2010 16:49  |
Jens Sören Lange
Messages: 193
Registered: June 2005
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first-grade participant |
From: *web.vodafone.de
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Hi Dipanwita,
I think your problem could be that probably you didn't set the CERN library.
export CERN_ROOT=....
(whereever your CERN library is).
However, there is now another (probably easier) way to run EvtGen,
namely the PndEvtGenDirect, developed by Björn Spruck (but undocumented yet).
I think so far we only have a small tutorial example existing.
http://panda-wiki.gsi.de/cgi-bin/view/Computing/PandaRootCharmoniumTutor ial
under item (3).
PndEvtGenDirect *EvtGen = new PndEvtGenDirect("psi(2S)","PSI2S.DEC");
primGen->AddGenerator(EvtGen);
is how to use it directly in your simulation macro.
You need a few ASCII files (evt.pdl, DECAY.DEC and your own decay file, e.g. PSI2S.DEC in this case), but it is maybe easier than compiling simpleEvtGen.cc.
cheers, Soeren
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