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锑锌镉(CZT)探测器γ谱探测系统是一种测量乏燃料组件燃耗的较有效的方法。本工作利用蒙特卡罗方法,借助于Geant4软件包计算了不同准直高度下组件中的137Cs和134Cs的全能峰探测效率,对测量结果的正确评价分析具有一定的意义。图1为CZT探测器屏蔽剖视图。CZT探测器置于屏蔽体的腔内,屏蔽体为中空圆柱形,材料为W0.95(NiFe)0.05。我们采用“双面燃耗测量”方法,并对实验装置进行相应的简化后,建立计算
Antimony-Zinc-Cadmium (CZT) Detector The gamma-ray detection system is a more effective method of measuring the burnup of spent fuel assemblies. In this work, Monte Carlo method was used to calculate the detection efficiencies of 137Cs and 134Cs in different components at different collimation heights by means of Geant4 software package, which has certain significance for the correct evaluation and analysis of measurement results. Figure 1 is a CZT detector shielding cross-section. CZT detector placed in the cavity of the shield, the shield is hollow cylindrical, the material is W0.95 (NiFe) 0.05. We use “double-sided burnup measurement ” method, and the experimental device to be simplified, the establishment of calculation