一种新型低电感磁绝缘传输线的冷腔特性  

Cold cavity characteristics of a new type of low-inductance magnetically insulated transmission line

作　　者：刘燕[1] 刘腊群[1] 周良骥[2] 蒋吉昊[2] 刘大刚[1] 王辉辉[1] 王启昂 Liu Yan;Liu Laqun;Zhou Liangji;Jiang Jihao;Liu Dagang;Wang Huihui;Wang Qi’ang(School of Electronic Science and Engineering,University of Electronic Science and Technology of China,Chengdu 610054,China;Institute of Fluid Physics,CAEP,Mianyang 621900,China)

机构地区：[1]电子科技大学电子科学与工程学院,成都610054 [2]中国工程物理研究院流体物理研究所,四川绵阳621900

出　　处：《强激光与粒子束》2022年第6期47-51,共5页High Power Laser and Particle Beams

基　　金：国家自然科学基金项目(12075051,11775045,11905026)。

摘　　要：研究了一种新型低电感花瓣形磁绝缘传输线的冷腔特性。该传输线构型的横向剖面的真空部分由12个类似花瓣形状的周期组成,而每个周期又由平行板和同轴圆弧两种基本传输线构型组成。该构型的整体轮廓有效增加了电极面积,使得传输线的电感大大降低,从而实现使用单层磁绝缘传输线即可获得较低的阻抗,规避了多层汇流结构带来的复杂的PHC结构和磁零位区损失问题。首先,分别计算出两种基本构型单元的电磁场分布、电感、电容和阻抗;而后,再整体计算分析出花瓣形磁绝缘传输线的电磁特性参数;同时,还通过数值模拟来分析该传输线的冷腔特性,获得了该传输线的阻抗值及电磁场分布,并将数值模拟结果与理论计算值进行了对比分析,结果验证了理论计算方法的正确性。The vacuum part of the transverse section of this configuration is composed of 12 petal-like periods,and each period is composed of two basic transmission line configurations:parallel plates and coaxial arcs.The overall outline of this configuration effectively increases the electrode area,which greatly reduces the inductance of the transmission line,so that a lower impedance can be obtained by using a single-layer magnetically insulated transmission line,which avoids the complex PHC structure and the loss of the magnetic null region caused by the multi-layer bus structure.The electromagnetic field distribution,inductance,capacitance,and impedance of the two basic configuration units are calculated separately,and then the electromagnetic characteristic parameters of the petal-shaped magnetic insulated transmission line are calculated and analyzed as a whole.At the same time,the cold cavity characteristics of the transmission line are analyzed through numerical simulation,the impedance value and electromagnetic field distribution of the transmission line are obtained,and the numerical simulation results are compared with the theoretical calculation values for verification and analysis.

关 键 词：花瓣形 低电感 磁绝缘传输线 冷腔特性 数值模拟 

分 类 号：TM89[电气工程—高电压与绝缘技术]