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Keywords: Ge HPGe Efficiency
Forum: Event and Track Management
Re: Question Charge Collection in HPGe Detector (Richard Longland)
Date: 04 Mar, 2008
From: Laura Harkness <Laura Harkness>

Hi,

I have simulated a HPGe detector also. I find the efficiencies are also about 40% too high at low energies.

I see that a lot of people have had similar problems in their simulations.

I have been as thorough as possible in simulating the experimental setup, and have included the dead layer, guard ring, metal casing and the air in the world. Is this a problem with geant4 or have people been able to rectify their codes?

I am calculating absolute efficiency (%) and this has been calculated using

(full energy deposits / generated events) (*100 to convert to %)

Experimental at 141keV = 0.27 (+/- 0.01) and simulated gives 0.37.

Has anyone found a solution?

Thanks,

Laura

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