Characterisation, modelling and optimisation of the model of a HPGe detector with the aid of point sources.
A virtual model of a Canberra HPGe detector was produced with the aid of MCNPX and of different point sources. The measured and expected count rates were compared. The initial results showed significant discrepancies, therefore additional parametric simulations have been used to improve the model. As a result, the agreement between theoretical and measured performances in the middle-upper part of the spectrum improved, while low energy photons still score the worst, due to incomplete knowledge of the inner structure of the housing that would require additional extensive measurements.
Marzocchi
O
O
Forschungszentrum Karlsruhe GmbH (KIT), Institute of Radiation Research (ISF), Eggenstein-Leopoldshafen, Germany. olaf.marzocchi@kit.edu
Breustedt
B
B
Urban
M
M