Simulated characteristics of the DEGAS gamma-detector array
Simulated characteristics of the DEGAS gamma-detector array
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DEGAS 伽马探测器阵列的模拟特性
DOI：
10.1016/j.nima.2018.02.062
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发表时间：
2018
期刊：
影响因子：
--
通讯作者：
Wang J G
中科院分区：
文献类型：
--
作者：
Li G S;Lizarazo C;Gerl J;Kojouharov I;Schaffner H;Gorska M;Pietralla N;Saha S;Liu M L;Wang J G
新的HPGe簇阵列DEGAS在FAIR的性能进行了研究，通过GEANT 4模拟使用精确的几何形状的大多数探测器组件。通过比较不同探测器设置的实验数据，对仿真框架进行了测试。该研究表明，DEGAS系统与以前的RISING阵列相比，可以明显提高光峰效率。此外，有源BGO后捕器可以大大提高背景抑制能力。加回分析表明，即使在γ多重数为6时，通过加回相邻Ge晶体的能量沉积，灵敏度也得到改善。
The performance of the novel HPGe-Cluster array DEGAS to be used at FAIR has been studied through GEANT4 simulations using accurate geometries of most of the detector components. The simulation framework has been tested by comparing experimental data of various detector setups. The study showed that the DEGAS system could provide a clear improvement of the photo-peak efficiency compared to the previous RISING array. In addition, the active BGO Back-catcher could greatly enhance the background suppression capability. The add-back analysis revealed that even at a γ multiplicity of six the sensitivity is improved by adding back the energy depositions of the neighboring Ge crystals.