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| Application of MAFIA in Three-Dimensional Dynamic PIC Simulation of TWT Multistage Depressed Collector |
| Liao Ping; Yang Zhong-hai; Li Bing; Lei Wen-qiang; Liao Li; Gao Xun-hong |
| School of Physical Electronics Univ. of Electronic Sci. and Tech. of China Chengdu 610054 China |
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Abstract After analyzing the classic 2-D steady-state trajectory method for multistage depressed collectors simulation and design and its limitation, a novel method of full three-dimensional (3-D) dynamic PIC simulation using MAFIA a three 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.
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Received: 27 October 2003
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2005, Vol. 27 
