|Message: Re: Problem with GetGlobalTime() / GetLocalTime() for optical photons||Not Logged In (login)|
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thank you for your answer and sorry for my delayed reply.
> Do you have a normal dispersive medium (n monotonously increases with > frequency) for WLSFiberCore?
The fiber core has one and the same refractive index for all photon energies (frequencies), n = 1.60. I only look at photons between 2 eV and 4 eV, so I don't care about dispersive properties.
> Geant4 calculates the group velocity and from this times are > calculated/updated. If you have access to your G4 source, I suggest you debug > G4Track::GetVelocity() and G4Transportation::AlongStepDoIt (deltaTime)
I have access to the G4 source, I am using Geant4 9.2.p01. I took a look into G4Track and G4Transportation and found a comment in G4Track:
// Fix GetVelocity (bug report #741) Horton-Smith Apr 14 2005
So I'm not sure if there is anything to fix anymore.
> (also read bug report: bug report #741 for an explanation of the method).
I would like to read it, but I don't know, where to find it....
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