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Forum: Processes Involving Optical Photons
Re: Question About the simulation of optical photon. (MaTao)
Date: 08 Jan, 2014
From: Gumplinger Peter <Gumplinger Peter>

Please, read:

http://geant4.web.cern.ch/geant4/UserDocumentation/UsersGuides/ForApplicationDeveloper/html/ch05s02.html#sect.PhysProc.Photo

> i don't know how to left one side unpolished or no reflection.

You can specify this surface to be 'dielectric_metal', with a reflectivity of 0.

> want to get the optical photon counts through the side what can i do to
> make it possible or is there any example that can do the job?

and efficiency = 1, see for example:

http://www-geant4.kek.jp/lxr/source/examples/extended/optical/LXe/src/LXeDetectorConstruction.cc#L274

To count the photons, you can implement code similar to:

http://www-geant4.kek.jp/lxr/source/examples/extended/optical/wls/src/WLSSteppingAction.cc#L328

where what is relevant is only that you require the case of 'Detection' and count; e.g. you don't necessarily have to implement the sensitive detector/hits mechanism.

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