| Re: Cherenkov photons generation (FairBoxGenerator) [message #10943 is a reply to message #10941] |
Sat, 21 August 2010 12:35   |
StefanoSpataro
Messages: 2736
Registered: June 2005
Location: Torino
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first-grade participant |
From: *236-95-r.retail.telecomitalia.it
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Hi,
to have cherenkov photons you should use pid code "50000050", and not "22". But I suppose you could have interaction to materials (i.e. air), if you shoot it from 0,0,0.
Your crash could be due to the fact that cherenkov propagation maybe is switched off by deafult. Please check your gconfig/g3Config.C and be sure that geant3->SetCKOV(1) is ON.
To change the particle vertex, you can just check wiki, on event generators -> uniform generator:
boxGen->SetXYZ(0., 0., 0.); // vertex coordinates [cm]
If you have still problem, maybe it is better to tell exactly which macro are you using, your changes, so that it is possible to crosscheck your crashes.
Bye
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