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Question Photon gets trapped in fiber 

Forum: Processes Involving Optical Photons
Date: 08 Feb, 2015
From: matthew <matthew>

I'm trying to model a scintillating fiber and I have questions regarding surfaces. I'm only generating 10 optical photons, but they get stuck in the fiber and the simulation never ends.

From the PNG image I've attached you can get a glimpse of what I'm talking about.

Because all of the volumes are dielectric I presumed I wouldn't need to define surfaces for boundary conditions. I'm guessing that is the problem. Should I be defining surfaces even between dielectrics? I have several questions about surfaces for optical processes:

1. Do I need a surface between the fiber core and the cladding?
2. Do I need a surface between the fiber and the air?
3. Can I accomplish both of those with dielectric-dielectric G4LogicalBorderSurface?

I've attached the detector construction class with the material properties tables for each volume.

Thanks for any advice.
matt

   Attachment:
      http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2015/02/08/19.14-18403-HepRAppOutput.png
      http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2015/02/08/19.14-5921-etectorConstruction_v2.cc

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1 None: Re: Photon gets trapped in fiber   (Erik Dietz-Laursonn - 09 Feb, 2015)
(_ None: Re: Photon gets trapped in fiber   (Erik Dietz-Laursonn - 09 Feb, 2015)
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