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Forum: Processes Involving Optical Photons
Re: Question Regarding photon detection (Athreya Shankar)
Date: 12 Apr, 2013
From: michel maire <michel maire>

On Fri, 12 Apr 2013 10:59:27 GMT, Athreya Shankar wrote:
> Dear sir,
> 
> I have been following the LXe example so far for processing hits created
> at a Photomultiplier (PMT) photocathode. It has been working properly
> for me. However, I have been thinking as to why the following scheme
> would not work especially when we are interested only in one PMT, and if
> that is the only surface where detection takes place.
> 
> Is it not simpler to check for Detection in Stepping Action and update a
> counter in eventaction every time Detection takes place? Then, at the
> end of the event, we will have the number of PMT hits in that event. Why
> at all go for a sensitive detector if one is interested in only the
> number of photons detected? Is there any flaw in this logic?
> 
> I am asking this because, this may be much simpler than having to create
> a sensitive detector every time I want to count the number of photons
> detected in an application.
> 
> Thank you very much, Athreya
> 

 SensitiveDetector (HitsCollections or scorers) may be a useful tool, but it is not mandatory. Many extended examples (especially electromagnetic) follow the logic that you are suggesting.
 Also example basic/B4 illustrate various strategies to collect informations.

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