行波管周期永磁聚焦系统结构优化设计  

Optimization of periodic permanent magnet focusing system for traveling-wave tubes

作　　者：王林梅[1] 甘邠[1] 袁涛[1] 高旭山[1] 王磊[1] 王敬东[1] 张明[1] 

机构地区：[1]西南应用磁学研究所,四川绵阳621000

出　　处：《磁性材料及器件》2012年第5期35-39,共5页Journal of Magnetic Materials and Devices

基　　金：国家重大科技专项资助项目(2008ZX01006-005)

摘　　要：利用Ansoft Maxwell 3D软件,对行波管周期永磁聚焦系统进行了结构优化设计,并研究了磁环尺寸对其轴向磁场分布的影响。在永磁材料性能、周期永磁聚焦系统内外径和周期保持不变的情况下,研究了周期永磁聚焦系统的结构尺寸对轴向峰值磁通密度的影响,确定磁环与极靴的最佳尺寸配合,使系统提供尽可能高的聚焦磁场。文章还总结了行波管周期永磁聚焦系统的设计原则和步骤。The structure and layout of periodic permanent magnet focusing system for traveling wave tube （TWT） was optimized using Ansoft Maxwell 3D software, and the influences of magnetic ring dimensions on the axial magnetic field were investigated. Supposing a condition of unchanging properties of permanent magnet material, inside and external diameter, and period of the magnetic system, the relationship of axial peak flux density and magnetic structure sizes were studied. We found the optimum dimension matching of magnet rings and pole pieces, which can provide focusing magnetic field as high as possible. The design principles and steps of TWT periodic permanent magnet focusing system were summarized.

关 键 词：行波管 周期永磁聚焦系统 永磁材料 磁通密度 优化设计 

分 类 号：TN124[电子电信—物理电子学] TM144[电气工程—电工理论与新技术]