|Message: Re: Cerenkov Process Problem 1||Not Logged In (login)|
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On Sat, 10 Oct 2015 09:58:26 GMT, Sage wrote:
> I modify the N06 example in geant4.9.4.p02 novice examples, and find > that without both Ionization and Bremsstrahlung processes, there would > be no generation of Cerenkov photons. > > Could anyone tell me the reason?
G4Cerenkov needs to know the range at which the particle goes below the Cerenkov threshold in order to calculate a step size that is limited by that threshold and no Cerenkov photons are generated beyond it. For this reason you need Ionization.
G4double Range = G4LossTableManager::Instance()-> GetRange(particleType, kineticEnergy, couple);
I'll look into changing G4Cerenkov so it works even when there is no Ionization process attached to the particle.