Optimisation of the MC-model of a p-type Ge-spectrometer for the purpose of efficiency determination

被引:59
作者
Budjas, D. [1 ]
Heisel, M. [1 ]
Maneschg, W. [1 ]
Simgen, H. [1 ]
机构
[1] Max Planck Inst Kernphys, D-69117 Heidelberg, Germany
关键词
Gamma spectrometry; Detection efficiency; Ge detector; Monte Carlo simulation; Geant4; Optimised detector model; GAMMA-RAY SPECTROMETRY; GEANT4; SIMULATION; DETECTOR; PHYSICS; GERDA;
D O I
10.1016/j.apradiso.2009.01.015
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
An optimisation of the geometrical model of a p-type detector used for material screening was carried out to improve the accuracy of Monte Carlo simulations in reproducing spectrometric measurements. Gamma-ray sources were measured to determine the dimensions of the detector dead layer and borehole. An agreement between simulations and measurement within 3% was achieved at energies above 100 keV. In contrast, discrepancies on the order of 23% were encountered using the nominal parameters from the detector manufacturer. (c) 2009 Elsevier Ltd. All rights reserved.
引用
收藏
页码:706 / 710
页数:5
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