强激光与粒子束2011，Vol.23Issue(9)：2552-2556,5.DOI:10.3788/HPLPB20112309.2552
带开口磁环的周期永磁聚焦系统的轴向磁场
Magnetic field along central axis for periodic permanent magnetic focusing system with open magnetic rings
摘要
Abstract
Based on the current element model for magnetic ring, the magnetic field distribution along central axis was analyzed for permanent magnetic ring. Theoretical calculation and measured results show that the whole magnetic ring only exhibits an axial magnetic field without radial component. For the open magnetic ring with a gap, the axial magnetic field decreases and the radial magnetic field increases, producing a non-axis-symmetrical magnetic field along central axis. Therefore, the application of the open magnetic ring in periodic permanent magnet(PPM) focusing system is limited. The structure of the PPM focusing system with open magnetic rings was proposed and optimized, according to the distribution characteristic of the axial magnetic field and radial magnetic field, and the periodic magnetic field along central axis was achieved.关键词
周期永磁聚焦系统/开口磁环/磁场分布/行波管Key words
periodic permanent magnet focusing system/ open magnetic ring/ magnetic field distribution/ traveling wave tube分类
信息技术与安全科学引用本文复制引用
彭龙,李元勋..带开口磁环的周期永磁聚焦系统的轴向磁场[J].强激光与粒子束,2011,23(9):2552-2556,5.基金项目
国家自然科学基金项目(61001025) （61001025）
成都信息工程学院科研基金项目(KYTZ201112) （KYTZ201112）
