强激光与粒子束2017，Vol.29Issue(11)：46-50,5.DOI:10.11884/HPLPB201729.170096
涡流对电真空器件内磁分布的影响及抑制方法
Influence of eddy-current on inside magnetic field distribution in vacuum electronic devices and corresponding suppression methods
摘要
Abstract
Excitation of magnetic field with short pulse current coils is one of the important technological approaches for achieving ultra-strong magnetic field in high frequency vacuum electronic devices,in which eddy-current would be excited at the same time and influence the distribution of magnetic field inside the tube.Impact of eddy-current on the distribution of short pulse magnetic field is studied in this paper,the effects of pulse duration,conductivity and thickness of the metallic structure on eddy-current are analyzed.The results show that the influence of eddy current on the internal magnetic field increases with the decrease of the pulse width of the coil current,the increase of the conductivity and the thickness of the metal,which leads to failure of ef-fective excitation of magnetic field inside the tube.Two methods for suppressing eddy current are proposed including electroplated coating of good conductor on high-resistivity metallic material and longitudinal slotting,the calculation results show that the two methods could effectively depress the influence of eddy-current on the distribution of magnetic field in the device.关键词
涡流/电真空器件/短脉冲磁场Key words
eddy-current/vacuum electronic devices/magnetic field with short pulse duration分类
信息技术与安全科学引用本文复制引用
马国武,胡林林,宋睿,孙迪敏,陈洪斌,孟凡宝..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(11):46-50,5.基金项目
国家高技术发展计划项目 （）
