论文标题
使用流体动力学方法快速模拟宝石检测器中的雪崩和流媒体
Fast simulation of avalanche and streamer in GEM detector using hydrodynamic approach
论文作者
论文摘要
在COMSOL多物理平台上已经开发了一个快速的流体动力数值模型，以模拟基于气态电子乘数（GEM）的气态电离检测器中带电颗粒的演变和动力学。已经分析了使用二维（2D），2D轴对称和三维（3D）模型的探测器的影响，以选择最佳构型。所选模型已用于遵循单，双重和三重GEM探测器的整个操作制度，包括雪崩和流媒体模式操作。使用优化模型对空间电荷的积累，其对应用电场的扭曲的贡献以及流媒体的产生进行了公平的详细研究。
A fast, hydrodynamic numerical model has been developed on the COMSOL Multi-physics platform to simulate the evolution and dynamics of charged particles in gaseous ionization detectors based on the Gaseous Electron Multipliers (GEM). Effects of using two-dimensional (2D), 2D axisymmetric and three-dimensional(3D) models of the detectors have been analyzed to choose the optimum configuration. The chosen model has been used to follow the entire operating regime of single, double and triple GEM detectors, including avalanche and streamer mode operations. The accumulation of space charge, its contribution towards the distortion of the applied electric field and production of streamers have been investigated in fair detail using the optimized model.
