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Question Photon Not Moving 

Forum: Geometry
Date: 14 Jul, 2011
From: <Dr_Cards>

Hello,

I am having some problems when using photons in my simulation. A random gamma photon gets stuck in my volume and it just prints out endless step information and the step lingth is 0. I usually encounted a warning message saying the particle has not moved, but in this case I don't get the warning message and it just fills up the terminal with endless steps with zero step length. I have run all of the overlap checks listed in the geant4 users manual and it reported no overlap. I have also verified this externally.

Does anyone know what the problem is?

Kind Regards

Michael Douglass


******************************************************************************************************
* G4Track Information: Particle = gamma, Track ID = 1, Parent ID = 0
******************************************************************************************************

Step# X(mm) Y(mm) Z(mm) KinE(MeV) dE(MeV) StepLeng TrackLeng NextVolume ProcName
    0 0 0 0 0.2 0 0 0 World initStep
    1 -0.0248 -0.0267 -0.00603 0.2 0 0.0369 0.0369 OutsideBox Transportation
0 2 -0.0248 -0.0267 -0.00603 0.2 0 6.14e-006 0.0369 InsideBox Transportation
544 3 -0.0377 -0.0406 -0.00918 0.2 0 0.0193 0.0562 OutsideBox Transportation
544 4 -0.0377 -0.0406 -0.00918 0.2 0 5.85e-006 0.0562 OutsideBox Transportation
544 5 -0.0377 -0.0406 -0.00918 0.2 0 3.83e-018 0.0562 OutsideBox Transportation
545 6 -0.0377 -0.0406 -0.00918 0.2 0 3.83e-018 0.0562 OutsideBox Transportation
544 7 -0.0377 -0.0406 -0.00918 0.2 0 3.83e-018 0.0562 OutsideBox Transportation
545 8 -0.0377 -0.0406 -0.00918 0.2 0 3.83e-018 0.0562 OutsideBox Transportation
544 9 -0.0377 -0.0406 -0.00918 0.2 0 3.83e-018 0.0562 OutsideBox Transportation
545 10 -0.0377 -0.0406 -0.00918 0.2 0 3.83e-018 0.0562 OutsideBox Transportation
544 11 -0.0377 -0.0406 -0.00918 0.2 0 3.83e-018 0.0562 OutsideBox Transportation
545 12 -0.0377 -0.0406 -0.00918 0.2 0 3.83e-018 0.0562 OutsideBox Transportation
544 13 -0.0377 -0.0406 -0.00918 0.2 0 3.83e-018 0.0562 OutsideBox Transportation
545 14 -0.0377 -0.0406 -0.00918 0.2 0 3.83e-018 0.0562 OutsideBox Transportation
544 15 -0.0377 -0.0406 -0.00918 0.2 0 3.83e-018 0.0562 OutsideBox Transportation

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1 More: Re: Photon Not Moving   (Gabriele Cosmo - 18 Jul, 2011)
(_ None: Re: Photon Not Moving   (Andrzej Szelc - 08 Dec, 2011)
(_ Feedback: Re: Photon Not Moving   (Michael Douglass - 09 Dec, 2011)
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