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Forum: Processes Involving Optical Photons
Re: Question Optical Photons (5eV) pass simple silicon detector without interaction (David Krapohl)
Date: 14 Jan, 2010
From: Gumplinger Peter <Gumplinger Peter>

Hi David,

Sorry, I can't spent the time looking your code over carefully. Just some observations. You have to decide whether your 'detector' is a dielectric or a metal. - I don't mean now what it is in reality, but how you want it to behave in optical photon tracking. If it is a dielectric, it has only a real index of refraction, but can have an infinite small absorption length, photons will enter it and you can use the 'scorers' of Geant4. If you decide it is a metal and the reflections off its surfaces are important, you have to define the surface as a 'dielectric_metal', and you give the real and imaginary index, but you cannot use the scorers (because photons will not enter the detector volume) and you will have to 'detect' photons as it is done in the LXe example.

Hope this helps a little, Peter

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