电子束二极管脉冲磁场的涡流分析及抑制
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摘要
针对强流脉冲电子束二极管金属表面涡流引起的器件内部磁场分布不均、电子束辐照材料表面处理效果不佳等现象,提出了多板钢联接式内壁与玻璃外壁相结合的双层结构设计。基于有限元仿真软件对电子束系统的磁场与涡流进行了数值计算,分析了涡流的影响因素和涡流对于电子束源磁场的影响。通过数值计算表明,设计的新型介质壁结构能有效降低涡流对于电子束的影响。该分析为消除感应涡流对真空二极管内部磁场的影响提供了理论依据,具有良好的参考价值。
In view of the uneven distribution of magnetic field in the devices caused by the metal surface eddy current in the high-current pulse electron beam diode,the surface treatment effect of the electron beam irradiated material is not good,and the double structure design of the multi plate steel connecting inner wall with the glass outer wall is proposed.Based on the finite element simulation software,the magnetic field and eddy current of the electron beam system are numerically calculated.The influence factors of the eddy current and the influence of the eddy current on the magnetic field of the electron beam source are analyzed.The result shows that the design of the new dielectric wall structure can effectively reduce the effect of eddy current on the electron beam.The analysis provides a theoretical basis for eliminating the influence of induction eddy current on the magnetic field of diode.
In view of the uneven distribution of magnetic field in the devices caused by the metal surface eddy current in the high-current pulse electron beam diode,the surface treatment effect of the electron beam irradiated material is not good,and the double structure design of the multi plate steel connecting inner wall with the glass outer wall is proposed.Based on the finite element simulation software,the magnetic field and eddy current of the electron beam system are numerically calculated.The influence factors of the eddy current and the influence of the eddy current on the magnetic field of the electron beam source are analyzed.The result shows that the design of the new dielectric wall structure can effectively reduce the effect of eddy current on the electron beam.The analysis provides a theoretical basis for eliminating the influence of induction eddy current on the magnetic field of diode.
引文
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[14]徐琳,王恒,黄祯,等.基于COMSOL有限元法的电涡流传感器仿真[J].排灌机械工程学报,2015,33(12):1097-1104.(Xu Lin,Wang Heng,Huang Zhen,et al.Simulation of eddy current sensor based on COMSOL finite element method.Journal of Drainage and Irrigation Machinery Engineering,2015,33(12):1097-1104)
[15]厚康,周海婷,王清,等.基于有限元仿真的薄板焊缝缺陷涡流检测信号分析[J].仪表技术与传感器,2016(5):99-102.(Hou Kang,Zhou Haiting,Wang Qing,et al.Analysis of eddy current testing signal of sheet metal weld defects based on finite element simulation.Instrument Technique and Sensor,2016(5):99-102)
[16]袁欢,黄华,刘振帮,等.强流脉冲电子束特性对相对论速调管相位的影响分析[J].电子学报,2017,45(8):1957-1963.(Yuan Huan,Huang Hua,Liu Zhenbang,et al.Impact on phase of relativistic klystron amplifier by intense current pulse electron beam property.Acta Electronica Sinica,2017,45(8):1957-1963)
[2] Murr L E,Gaytan S M,Ramirez D A,et al.Metal fabrication by additive manufacturing using laser and electron beam melting technologies[J].Journal of Materials Science&Technology,2012,28(1):1-14.
[3]陈宇航,龙继东,刘尔祥,等.磁场引起的潘宁离子源阻抗变化研究[J].强激光与粒子束,2016,28:045107.(Cheng Yuhang,Long Jidong,Liu Erxiang,et al.Impact of magnetic field on Penning discharge.High Power Laser and Particle Beams,2016,28:045107)
[4]莫金海,杨亚伟,乔艳平.基于PWM-Zeta型电子束焊机高压稳定电源优化设计[J].现代电子技术,2018,41(4):96-100.(Mo Jinhai,Yang Yawei,Qiao Yanping.Optimization design of EBW high-voltage stabilized power supply based on PWM-Zeta.Modern Electronics Technique,2018,41(4):96-100)
[5]古亮,尹泽龙,孙军,等.一种强流脉冲电子束源光遥控点火驱动器:CN107165758A[P].2017-09-15.(Gu Liang,Yin Zelong,Sun Jun,et al.A remote controlled ignition driver for intense pulsed electron beam source:CN107165758A.2017-09-15)
[6]孔龙.径向电子束的产生与传输[D].成都:西南交通大学,2017:44-48.(Kong Long.Generation and transmission of the radial electron beam.Chengdu:Southwest Jiaotong University,2017:44-48)
[7]马国武,胡林林,宋睿,等.涡流对电真空器件内磁分布的影响及抑制方法[J].强激光与粒子束,2017,29:113101.(Ma Guowu,Hu Linlin,Song Rui,et al.Influence of eddy-current on inside magnetic field distribution in vacuum electronic devices and corresponding suppression methods.High Power Laser and Particle Beams,2017,29:113101)
[8]刘鹏飞,张海峰,李正熙,等.大功率电子束熔炼炉高压电源散热设计与仿真[J].计算机仿真,2015,32(5):239-242.(Liu Pengfei,Zhang Haifeng,Li Zhengxi,et al.Cooling design and simulation of high-power and high-voltage source of electron beam melting furnace.Computer Simulation,2015,32(5):239-242)
[9]杨长鸿,蒙林,张开志,等.直线感应加速器中聚束磁场的数值计算方法[J].强激光与粒子束,2010,22(6):1331-1334.(Yang Changhong,Meng Lin,Zhang Kaizhi,et al.Numerical simulation of beam focusing magnetic field in linear induction accelerator.High Power Laser and Particle Beams,2010,22(6):1331-1334)
[10]郝胜智,李向南.大口径脉冲潘宁放电装置设计及实验研究[J].真空科学与技术学报,2014,34(4):377-380.(Hao Shengzhi,Li Xiangnan.Design and experimental study of large diameter pulsed Penning discharge device.Chinese Journal of Vacuum Science and Technology,2014,34(4):377-380)
[11]姜磊,王钰,熊又星.基于矩形亥姆霍兹线圈的大均匀区改进型三维磁场发生器设计与特性[J].磁性材料及器件,2016,47(5):45-50.(Jiang Lei,Wang Yu,Xiong Youxing.Design and characteristics of an improved 3D magnetic field generator with larger uniform region based on rectangular Helmholtz coil.Journal of Magnetic Materials and Devices,2016,47(5):45-50)
[12] WangYi,Li Qin,Yang Zhiyong,et al.Energy-spread measurement of triple-pulse electron beams based on the magnetic dispersion principle[J].Nuclear Science and Techniques,2017,28(4):62-66.
[13]吴中发,王玉芝,黄益新.脉冲磁场中波导管涡流影响的数值模拟[J].强激光与粒子束,1997,9(2):265-270.(Wu Zhongfa,Wang Yuzhi,Huang Yixin.Numerical simulations about eddy current influences of waveguide pipe in pulsed magnetic fields.High Power Laser and Particle Beams,1997,9(2):265-270)
[14]徐琳,王恒,黄祯,等.基于COMSOL有限元法的电涡流传感器仿真[J].排灌机械工程学报,2015,33(12):1097-1104.(Xu Lin,Wang Heng,Huang Zhen,et al.Simulation of eddy current sensor based on COMSOL finite element method.Journal of Drainage and Irrigation Machinery Engineering,2015,33(12):1097-1104)
[15]厚康,周海婷,王清,等.基于有限元仿真的薄板焊缝缺陷涡流检测信号分析[J].仪表技术与传感器,2016(5):99-102.(Hou Kang,Zhou Haiting,Wang Qing,et al.Analysis of eddy current testing signal of sheet metal weld defects based on finite element simulation.Instrument Technique and Sensor,2016(5):99-102)
[16]袁欢,黄华,刘振帮,等.强流脉冲电子束特性对相对论速调管相位的影响分析[J].电子学报,2017,45(8):1957-1963.(Yuan Huan,Huang Hua,Liu Zhenbang,et al.Impact on phase of relativistic klystron amplifier by intense current pulse electron beam property.Acta Electronica Sinica,2017,45(8):1957-1963)