收集极对分离打拿极电子倍增器增益影响的模拟计算  

Numerical Simulation of the Influence of Collector on the Gain of Discrete Dynode Electron Multiplier

作　　者：李杨昊 夏章聪 李洁[1] 吴胜利[1] 胡文波[1] 田进寿[2] LI Yang-hao;XIA Zhang-cong;LI Jie;WU Sheng-li;HU Wen-bo;TIAN Jin-shou(Key Laboratory of Physical Electronics and Devices,Ministry of Education,School of Electronic Science and Engineering,Xi'an Jiaotong University,Xi'an710049,China;Key Laboratory of Ultra-fast Photoelectric Diagnostics Technology,Xi'an Institute of Optics and Precision Mechanics,Chinese Academy of Sciences,Xi'an710119,China)

机构地区：[1]西安交通大学电子物理与器件教育部重点实验室电子科学与工程学院,陕西西安710049 [2]中国科学院西安光学精密机械研究所超快诊断技术重点实验室,陕西西安710119

出　　处：《真空电子技术》2022年第4期47-51,80,共6页Vacuum Electronics

基　　金：国家自然科学基金项目(52002313);科工局重点实验室稳定支持科研项目;国家重点研发计划资助项目(2021YFF0700800)。

摘　　要：使用CST粒子工作室对分离打拿极电子倍增器进行建模和仿真,采用控制变量的分析方法调整电子倍增器收集极的参数,得到了电子倍增器内部的电子轨迹图。分析了影响电子倍增器增益的主要因素,研究了收集极对电子倍增器增益的影响,并且通过改变收集极的位置和结构分别对电子倍增器的增益进行优化。研究结果表明,收集极距离第九级打拿极位置为0.6mm时,电子倍增器增益最大;改变收集极上折角度的研究结果表明,收集极两端上折60°时,电子倍增器的增益最大。CST Particle Studio is used to model and simulate the discrete dynode electron multiplier.The col-lector parameters are modified by control variable analysis method to obtain the electron trajectories inside the elec-tron multiplier.Main factors affecting the gain of the electron multiplier are analyzed,and the influence of collector is studied.The gain of the electron multiplier is optimized by changing the position and structure of the col-lector,respectively.The position changing results show that when the collector is 0.6mm away from the 9th dynode,the gain of the electron multiplier is the largest;and the structure changing results show that when the collector is folded upward at 60°,the gain of the electron multiplier is the largest.

关 键 词：分离打拿极电子倍增器 收集极 电子倍增器增益 CST模拟计算 

分 类 号：TN152[电子电信—物理电子学]