|Message: Re: Photon Not Moving||Not Logged In (login)|
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I have an identical problem where photons at very different energies seem to stop with a ~e-14 stepsize well inside the .gdml defined volume. It does seem that they stop on the boundary of voxels and if I dig in to the geant4 part of the code (G4ParallelWorldScoringProcess.cc) it turns out that fOnBoundary=true .
I have seen it happen several times, and I'm able to reproduce it consistently reusing the random seeds. I don't think I can supply a cut down version that would reproduce this elsewhere, though.
Michael, were you able to find a solution to this? Is there some way to catch these events and force them to have a bigger step inside the user action code? thanks, Andrzej
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