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Forum: Event and Track Management
Re: Question Particle Question (Novice Level) (E Askan)
Date: 30 Jul, 2008
From: Gumplinger Peter <Gumplinger Peter>

> I am working on a Cerenkov simulation that uses Cerenkov electrons to

> set a beam of photons towards a set of 4 mirrors and reflect into PMTs.

I must assume that you are talking about 'electrons sending a beam of Cerenkov (optical) photons towards....'.

If you place material in the way of 'optical photons' for which you have not specified an index of refraction - or a mirrow dielectric_metal surface - all photons hitting this plane will be killed. However, it is up to you, in your G4UserSteppingAction, to count the number of photons killed by the program in this way. There are numerous Geant4 examples showing you how to tally in G4UserSteppingAction (asking for a specific volume by name, specific type of particle by name, and tracking status 'StopAndKill'.)

As for counting optical photons hitting your PMTs, please take a look at /examples/extended/optical/LXe.

As for counting all optical photons produced in an event, please take a look at the Tips page:

http://geant4.slac.stanford.edu/Tips/event/4.html

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1 Question: Re: Particle Question (Novice Level)   (E Askan - 30 Jul, 2008)
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