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Question Charge Collection in HPGe Detector 

Keywords: Ge HPGe Efficiency "charge collection"
Forum: Event and Track Management
Date: 26 Aug, 2005
From: Richard Longland <>

Hi all,

I'm attempting to model a relatively simple Germanium crystal to find the efficiency, that is, the total efficiency (number counted/number emitted) and the full energy peak efficiency.

At the moment, I'm simply looking at the amount of energy deposited in the germanium to find these efficiencies, but it consistantly gives me efficiencies 30-50% too high! I was wondering, it is possible to apply an electric field across the Ge to find the amount of charge collected at the annode, thus finding the efficiency that way?

Does anyone have any tips to finding detection efficiencies? I have the full geommetry and am using one of the standard EM physics sets from the TestEM examples.

Cheers, Richard

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1 None: Re: Charge Collection in HPGe Detector   (Laura Harkness - 04 Mar, 2008)
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