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Question Energy release in segmented detector 

Forum: Geometry
Date: 20 Apr, 2012
From: Nicola Mori <Nicola Mori>

Hello, I have a layer of scintillating fibers where an electromagnetic shower deposits some energy. The layer is made of 448 polistyrene fibers whose dimensions (x,y,z) are 1mm x 44.8 cm x 1mm, to give a square 44.8x44.8 cm^2 layer whose thickness is 1mm. I simulate the shower coming along the Z direction using the QGSP_BERT physics list in Geant4.9.5. I see some differences when simulating the fully segmented layer and a non-segmented 44.8x44.8 cm^2 layer: in the former case the total energy release is lower than in the second case, and this is wrong since the total material is the same. I think the problem might be that the segmented version has volumes which are very small (1 mm) and this may interact with some cuts/thresholds which have to be accordingly tuned for precision. I am quite new to Genat4, so I need some hints about this problem and eventually some suggestion on what to tune to improve the situation. Thanks

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1 Idea: Re: Energy release in segmented detector   (Vladimir Ivanchenko - 23 May, 2012)
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