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Forum: Processes Involving Optical Photons
Re: Question Air Gap (Eric)
Date: 04 Oct, 2011
From: Gumplinger Peter <Gumplinger Peter>

> It seems there should be a way with surfaces to do this, but my experience with > optical surfaces in Geant is that they are designed to simulate reflective
> wrappings and wouldn't be real useful in this case.


> Any suggestions?

A small air gap - no matter how small - will cut your rate down. That's why PMTs are coupled to scintillators using optical grease.

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