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Re: Cherenkov photons generation (FairBoxGenerator) updated! [message #10951 is a reply to message #10923] Tue, 24 August 2010 17:48 Go to previous messageGo to previous message
Jochen Schwiening is currently offline  Jochen Schwiening
Messages: 86
Registered: June 2009
Location: GSI, Darmstadt
continuous participant
 From: *gsi.de
Hi Stefano,

thank you for your helpful response.

I can confirm that we are using Geant 3 and that we set geant3->SetCKOV(1); as you mention.

You identified the reason for the vanishing primary gamma (22). If I lower the cut to 1 eV then the photon propagates a bit until it vanishes inside the quartz or the oil as it goes. If I try to go to 0.1 eV it crashes. Either way it never makes it to the photon detector and it never registers as a hit.

Regarding Geant 4, Dipanwita told me that the DIRC code currently does not work in G4, crashes for an undetermined reason.

Not sure if there's anything else we can test...

Thanks, Jochen

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