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Question energy deposition through multilayer geometry 

Keywords: energy depositon interface multilayer
Forum: Event and Track Management
Date: 02 Dec, 2004
From: Luís <perles@dfm.ffclrp.usp.br>

Dear Geant4 users and developers

I am trying to get energy deposition from a multilayer geometry, but I am getting energy bumps in the interface region. My geometry set up is quite simple: four layers constructed with G4Box inside a world filled with vacuum where I shoot electrons. For testing purpose I used the same material in all layers (in this case water). But I got strange energy bumps around the interfaces!

My simulation is based on the brachytherapy example and novice example N04. But there are some differences: I am using one SensitiveDetector and one ReadOutGeometry for whole target, just because I want one plot with the energy distribution through the layers.

Am I doing something wrong? Or, is this a Geant4 bug?

Before someone ask me I tested two other cases, where the layers are sharing interfaces and with a small gap between them (50nm). In both cases I got the same strange energy depositions around interfaces.

If someone need, I can provide plots and other data.

Cheers,

Luís A. Perles

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1 None: Re: energy deposition through multilayer geometry   (Jeremy McCormick - 02 Dec, 2004)
3 None: Re: energy deposition through multilayer geometry   (michel maire - 03 Dec, 2004)
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