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Forum: Processes Involving Optical Photons
Re: None Optical Photons don't cross boundary (Vincent Clochard)
Date: 06 Aug, 2004
From: Gumplinger Peter <Gumplinger Peter>

In G4, before release 6.2 (earlier than 19th February 2004) the skin surface was only supposed to be used as the surrounding skin of a volume, certainly not between your scintillator and your fiber. On the other hand, the border-surface should work. I can't tell you why not without seeing the code snippets.

However there is something even simpler you might want to try; i.e. do NOT even bother define a surface between your fiber and your scintillator. All you need to do is define the refractive index of your fiber and your scintillator so long as you are happy to simulate a perfectly smooth / polished interface between the two. In this case, the surface model defaults to 'glisur' and the surface finish to 'polished'

I suggest you update to geant4.6.2.p01. In this latest release, we have a new extended example in: /geant4/examples/extended/optical/LXe which demonstrates how to define cladded WLS fibers within a scintillator.

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