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Forum: Processes Involving Optical Photons
Re: Question Detection of photons on photocathode (Lafont Fabien)
Date: 24 Jun, 2013
From: Gumplinger Peter <Gumplinger Peter>

> My objectives are :
> - Detect the hits of photons - Score the total number of photons coming
> to the photocathode - Divide my photocathode into sectors (pixels) in
> order to able to count photons coming to each pixel.

I'd follow the LXe example in how to 'detect' photons arriving at the photocathode. For each photon I can then get the local coordinates of the photo cathode (x and y). See, for example:

You can then simply assign this information to your assumed pixels and you are done. No need to define a "read-out geometry".

> Could some experts help me?

I am not an expert in ROG and I have never tried using it in conjunction with optical photon detection. You may have more success getting advice on (which ever) Forum is suited for questions regarding 'read-out geometry' if you insist in learning how to get this right.

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