Monte Carlo simulation of a novel multipacting cathode

Dong Ye; Liu Qingxiang; Li Xiangqiang; Zhou Haijing; Dong Zhiwei

doi:10.11884/HPLPB201830.170431

Volume 30 Issue 6

Jun. 2018

Turn off MathJax

Article Contents

Abstract

References

Article Navigation > High Power Laser and Particle Beams > 2018 > 30(6): 063005

Peng Yi, Zhang Jingyu, Chen Yixue. Application of improved transmutation trajectory analysis in neutron activation calculation[J]. High Power Laser and Particle Beams, 2017, 29: 036018. doi: 10.11884/HPLPB201729.160194

Citation:

Dong Ye, Liu Qingxiang, Li Xiangqiang, et al. Monte Carlo simulation of a novel multipacting cathode[J]. High Power Laser and Particle Beams, 2018, 30: 063005. doi: 10.11884/HPLPB201830.170431

Citation:

Dong Ye, Liu Qingxiang, Li Xiangqiang, et al. Monte Carlo simulation of a novel multipacting cathode[J]. High Power Laser and Particle Beams, 2018, 30: 063005. doi: 10.11884/HPLPB201830.170431

PDF( 5955 KB)

Monte Carlo simulation of a novel multipacting cathode

doi: 10.11884/HPLPB201830.170431

1.
School of Physical Science and Technology, Southwest Jiaotong University, Chengdu 610031, China
2.
Institute of Applied Physics and Computational Mathematics, Beijing 100094, China

Received Date: 2017-11-02
Rev Recd Date: 2018-01-12
Publish Date: 2018-06-15

Abstract

Abstract

In this paper, a novel high current diode with multipacting cathode is studied and verified by using simplified dynamic theory and Monte Carlo simulation. Firstly, based on the design-prototype and the emission characteristics of secondary electron, the dynamic model is established, the expressions of electron velocity, displacement and transit time are obtained from the simplified dynamic equations. The multipacting cathode's working range (multipacting susceptibility) is obtained, by using dynamic theory and Vaughan's SEY (Secondary Electron Yield) model. Secondly, the importance of the applied electric field in radial direction is discussed, and the characteristics parameters of moving secondary electrons are analyzed theoretically, such as maximum displacement, transit time, and impact energy. Finally, the novel high current diode with multipacting cathode is investigated by using Monte Carlo simulation in detail. The physical images of secondary electron's trajectory, impact energy and the multipacting working range diagram are analyzed and discussed. The theoretical results are verified by Monte Carlo simulation and they agree with the theoretical results. The possible reason of the error between theoretical and simulated results is discussed. Both theoretical and numerical results demonstrate that the concept of the novel high current diode is feasible, by adjusting the magnitude of the applied electric field and magnetic field, the moving status of secondary electrons could be controlled effectively. Under the condition of multipactor saturation, the roughly theoretical estimation indicates that the novel multipacting cathode has the performance of high emission current density, and the emission current density can run up to the level of ~kA/cm². Enhancing the magnitude of applied electrostatic field in radial direction can effectively improve the emission current density. In addition, the design procedure of the multipacting cathode is introduced and discussed in detail.
- multipacting cathode,
- diode,
- dynamic equation,
- Monte Carlo simulation

FullText(HTML)

References(18)

References

[1]	Farnsworth P T. Television by electron image scanning[J]. J Franklin Inst, 1934, 218(4): 411-444. doi: 10.1016/S0016-0032(34)90415-4
[2]	Vaughan J R M. A new formula for secondary emission yield[J]. IEEE Trans. Electron Devices, 1989, 36(9): 1963-1967.
[3]	Furman M A, Pivi M T F. Probabilistic model for the simulation of secondary electron emission[J]. Phys Rev Special Topics Accel Beams, 2002, 5: 124404. doi: 10.1103/PhysRevSTAB.5.124404
[4]	Vaughan J R M. Multipactor[J]. IEEE Trans on Electron Devices, 1988, 35(7): 1172-1180.
[5]	Kishek R A, Lau Y Y, et al. Multipactor discharge on metals and dielectrics: Historical review and recent theories[J]. Phys Plasmas, 1998, 5(5): 2120-2126. doi: 10.1063/1.872883
[6]	Kim H C, Verboncoeur J P. Time-dependent physics of a single-surface multipactor discharge[J]. Phys Plasmas, 2005, 12: 123504. doi: 10.1063/1.2148963
[7]	Foster J, Krompholz H, Neuber A. Statistical analysis of high power microwave surface flashover delay times in nitrogen with metallic field enhancements[J]. Phys Plasmas, 2011, 18: 113505. doi: 10.1063/1.3662108
[8]	Perkins M P, Houck T L, Javedani J B, et al. Progress on simulating the initiation of vacuum insulator flashover[C]//Proc 17th IEEE Int Pulsed Power Conf. 2009: 441-446.
[9]	Neuber A, Butcher M, Hatfield L L, et al. Electric current in dc surface flashover in vacuum[J]. J Appl Phy, 1999, 85(6): 3084-3091. doi: 10.1063/1.369647
[10]	Liu Y S, Zhang G J, Zhao W B, et al. Analysis on surface charging of insulator prior to flashover in vacuum[J]. Applied Surface Science, 2004, 230(1): 12-17.
[11]	程国新, 程新兵, 刘列, 等. 刻槽绝缘子真空表面闪络特性分析[J]. 强激光与粒子束, 2012, 24(4): 801-805. doi: 10.3788/HPLPB20122404.0801 Cheng Guoxin, Cheng Xinbing, Liu Lie, et al. Vacuum surface flashover of grooved dielectrics. High Power Laser and Particle Beams, 2012, 24(4): 801-805 doi: 10.3788/HPLPB20122404.0801
[12]	Cai L B, Wang J G, Zhang D H, et al, Self-consistent simulation of the initiation of the flashover discharge on vacuum insulator surface[J]. Phys Plasmas, 2012, 19: 073516. doi: 10.1063/1.4737195
[13]	王勐, 丁伯南, 谢卫平. 多层长渡越时间轴向绝缘堆的闪络概率分析[J]. 强激光与粒子束, 2004, 16(7): 934-938. http://www.hplpb.com.cn/article/id/640 Wang Meng, Ding Bo'nan, Xie Weiping, Flashover probability analysis of vacuum insulator stack with many stages and large transit time. High Power Laser and Particle Beams, 2004, 16(7): 934-938 http://www.hplpb.com.cn/article/id/640
[14]	Barker R J, Schamiloglu E. High-power microwaves sources and technologies. Beijing: Tsinghua University Press, 2005
[15]	Mako F M. Electron gun for producing incident and secondary electrons: United States, 7285915[P]. 2007-10-23.
[16]	翟纪元, 唐传祥, 郑曙昕. 微脉冲电子枪动力学实验研究[J]. 高能物理与核物理, 2006, 30(s1): 99-101. https://www.cnki.com.cn/Article/CJFDTOTAL-KNWL2006S1033.htm Zhai Jiyuan, Tang Chuan-xiang, Zheng Shuxin. Experimental study on the beam dynamics of the micro-pulse electron gun. High Energy Physics and Nuclear Physics, 2006, 30(s1): 99-101 https://www.cnki.com.cn/Article/CJFDTOTAL-KNWL2006S1033.htm
[17]	孙红兵, 裴元吉, 谢爱根, 等. 二次发射微波电子枪的倍增特性[J]. 强激光与粒子束, 2004, 16(11): 1477-1480. http://www.hplpb.com.cn/article/id/495 Sun Hongbing, Pei Yuanji, Xie Aigen, et al. Multiplication effect of the secondary emission microwave electron gun. High Power Laser and Particle Beams, 2004, 16(11): 1477-1480 http://www.hplpb.com.cn/article/id/495
[18]	杨兴繁, 许州, 刘锡三, 等. 微脉冲电子枪理论分析与实验设计[J]. 中国核科技报告, 2002(0): 143-152. https://www.cnki.com.cn/Article/CJFDTOTAL-ZHBG200200013.htm Yang Xingfan, Xu Zhou, Liu Xisan, et al. Analysis and experimental design of micro-pulse gun. China Nuclear Science and Technology Report, 2002(0): 143-152 https://www.cnki.com.cn/Article/CJFDTOTAL-ZHBG200200013.htm