THGEM gain calculations using Garfield++: solving discrepancies between simulation and experimental data
THGEM gain calculations using Garfield++: solving discrepancies between simulation and experimental data
复制标题
DOI：
10.1088/1748-0221/11/08/p08018
复制
发表时间：
2016-06
影响因子：
1.3
通讯作者：
C. Azevedo;P. Correia;L. Carramate;A.L.M. Silva;J. Veloso
中科院分区：
文献类型：
--
作者：
C. Azevedo;P. Correia;L. Carramate;A.L.M. Silva;J. Veloso
多个小组已经观察到厚微图案气体探测器 (MPGD)（即 THGEM）中测量增益和模拟增益之间的差异。为了模拟电子雪崩和增益，社区依赖于 Garfield++ 中执行的计算，已知与厚 MPGD 的实验数据相比，会产生 2 个数量级的差异。在本工作中，对 Ne/5%CH4、Ar/5%CH4 和 Ar/30%CO2 混合物进行的模拟表明，如果模拟中包含潘宁效应，Garfield++ 能够完美地描述实验数据。显示了 THGEM 和 GEM 中可能导致潘宁转移的激励数量之间的比较，解释了在 GEM 中观察到的不太明显的增益差异。
Discrepancies between the measured and simulated gain in Thick-Micropatterned gaseous detectors (MPGD), namely THGEM, have been observed by several groups. In order to simulate the electron avalanches and the gain the community relies on the calculations performed in Garfield++, known to produce differences of 2 orders of magnitude in comparison to the experimental data for thick MPGDs. In this work, simulations performed for Ne/5%CH4, Ar/5%CH4 and Ar/30%CO2 mixtures shows that Garfield++ is able to perfectly describe the experimental data if Penning effect is included in the simulation. The comparison between the number of excitations which may lead to a Penning transfer, is shown for THGEM and GEM, explaining the less pronounced gain discrepancies observed in GEM.