【摘要】 评述了传统二维稳态轨迹程序模拟多级降压收集极计算方法,同时提出了使用MAFIA+大信号分析软件对多级降压收集极进行全三维动态PIC模拟的方法和收集极效率简化计算公式。初步模拟实例表明该方法与实验结果吻合较好,为收集极的精确模拟和优化设计提供了新的途径。同时也指出了该方法存在的不足。更多还原

【Abstract】 After analyzing the classic 2-D steady-state trajectory method for multistage depressed collectors simulationand design and its limitation, a novel method of full three-dimensional (3-D) dynamic PIC simulation using MAFIA--athree dimensional electromagnetic finite integration code and large signal analysis code is presented. The simplified formula of collector efficiency is also put forward. The process and primary result of this method are described, which shows that the simulation results close to the experimental data within acceptable error range. It is the new approach to accurate simulation and engineering design and optimizing of multistage depressed collectors. Simultaneausly, the deficiency of this method is also pointed out.更多还原