|Message: Possible to generate particles on a hemisphere with GPS?||Not Logged In (login)|
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Hi all, Is it possible to generate particles on a hemisphere with the GPS? I could not find anything about it in the documentation available at http://reat.space.qinetiq.com/gps/ . Poking around in the code (G4SPSPosDistribution.cc, lines 436-) it does not seem possible. Maybe with some sort of biasing? It seems possible to bias (pos) theta... I guess that might result in particles with weight=0 running around in the simulation though? Perhaps not good solution. In case it is not possible to control the position of particles generated on a sphere with the GPS, is it "safe" to control it in my own "PrimaryGeneratorAction::GeneratePrimaries(G4Event* event)"? If I am not satisfied with the generated primary vertex, can I do a delete event->GetPrimaryVertex(0) and try again? Or would that mess up Geant4 internals? Thanks in advance. (I am using Geant4 7.1) Cheers, Tore
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