| 微波管电子枪三维粒子模拟研究 |
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| 引用本文： | 廖平,杨中海,雷文强,肖礼.微波管电子枪三维粒子模拟研究[J].强激光与粒子束,2004,16(3):353-357. |
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| 作者姓名： | 廖平 杨中海 雷文强 肖礼 |
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| 作者单位： | 电子科技大学 物理电子学院，四川 成都 610054 |
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| 基金项目： | 国防科技基础研究基金资助课题(G02010401,AW010310-1) |
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| 摘 要： | 分析了以往电子光学模型进行电子枪模拟工作过程及存在的缺陷，指出粒子模拟方法能够全面考虑空间电荷限制和温度限制、阴极热初速、电子注非层流性等因素，研究电子注的瞬态和噪声特性，是一种更准确的电子枪模拟方法。以某电子枪为例，运用Mafia PIC模块进行了模拟计算，与实验结果对比表明Mafia粒子模拟具有相当精度，可用于指导微波管电子枪工程设计。
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| 关 键 词： | 电子枪 计算机辅助设计 粒子模拟 MAFIA |
| 文章编号： | 1001-4322(2004)03-0353-05 |
| 收稿时间： | 2003/4/21 |
| 修稿时间： | 2003年4月21日 |
Study on 3-D MAFIA PIC simulation for microwave tube electron gun |
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| LIAO Ping,YANG Zhong-hai,LEI Wen-qiang,XIAO Li.Study on 3-D MAFIA PIC simulation for microwave tube electron gun[J].High Power Laser and Particle Beams,2004,16(3):353-357. |
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| Authors: | LIAO Ping YANG Zhong-hai LEI Wen-qiang XIAO Li |
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| Institution: | School of Physical Electronics，University of Electronic Science and Technology of China，Chengdu 610054, China |
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| Abstract: | After analyzing the design process with previous electron beam optics simulation and modeling tools and their shortcomings, this paper presents that MAFIA PIC simulation is a more accurate method as it can wholly support space-charge-limited (Child's law) and temperature-limited emission, cathode thermal initial velocity and non-laminar flow. The 3-dimensional time-dependent PIC code is also desired for studying the beam transient and noise character. Using MAFIA PIC code to simulate an electron gun, some useful data are obtained, which show that the simulation results are close to the experimental data within acceptable error range. It can be used to instruct the engineering design of microwave tube electron optics. |
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| Keywords: | Electron gun Computer-aided design (CAD) Particle-in-cell (PIC) MAFIA |
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