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Pulse-shape calculations and applications using the AGATAGeFEM software package
The European Physical Journal A ( IF 2.7 ) Pub Date : 2021-06-18 , DOI: 10.1140/epja/s10050-021-00512-w
J. Ljungvall

A software package for modeling segmented High-Purity Segmented Germanium detectors, AGATAGeFEM, is presented. The choices made for geometry implementation and the calculations of the electric and weighting fields are discussed and models used for charge-carrier velocities are described. Numerical integration of the charge-carrier transport equation is explained. The impact of noise and crosstalk on the achieved position resolution in AGATA detectors is investigated. The results suggest that crosstalk, as seen in the AGATA detectors, is of minor importance for the position resolution. The sensitivity of the pulse shapes to the parameters in the pulse-shape calculations is determined as a function of position in the detectors. Finally, AGATAGeFEM has been used to produce pulse-shape data bases for pulse-shape analyses of experimental data. The results with the new data base indicate improvement with respect to those with the standard AGATA data base. The AGATAGeFEM package sets itself apart with its high precision of the detector geometry description. This lends itself to numerical studies of the impact of segmentation lines and charge diffusion in the next step of code development.



中文翻译:

使用 AGTAGeFEM 软件包的脉冲形状计算和应用

介绍了用于对分段高纯度分段锗探测器建模的软件包 AGATAGeFEM。讨论了几何实现的选择以及电场和加权场的计算,并描述了用于电荷载流子速度的模型。解释了电荷载流子传输方程的数值积分。研究了噪声和串扰对 AGATA 探测器实现的位置分辨率的影响。结果表明,在 AGATA 检测器中看到的串扰对位置分辨率的重要性不大。脉冲形状对脉冲形状计算中的参数的敏感性被确定为检测器中位置的函数。最后,AGATAGeFEM 已用于生成脉冲形状数据库,用于对实验数据进行脉冲形状分析。新数据库的结果表明相对于标准 AGATA 数据库的结果有所改进。AGTAGeFEM 软件包以其探测器几何描述的高精度而与众不同。这有助于在代码开发的下一步中对分割线和电荷扩散的影响进行数值研究。

更新日期:2021-06-18
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