空间行波管对周期永磁聚焦系统的要求

摘要

基于周期永磁聚焦系统结构和磁聚焦原理,提出了空间行波管对周期永磁聚焦系统的要求:(1)低横向场;(2)磁场随温度变化小;(3)低衰退率;(4)体积小,重量轻.稀土钴永磁材料能较好地满足这些要求,因而成为行波管周期永磁聚焦系统的首选.%Based on the structure of periodic permanent magnetic focusing system and the magnetic focusing principle, requirements of space traveling-wave tube (TWT) for the periodic permanent magnetic focusing system were proposed as follows: (1) low cross field, (2)high stability of magnetic field versus temperature, (3) low attenuation, and (4) small size and light weight. Rare earth cobalt magnet can better meet these requirements, and resultantly becomes the first choice for the TWT periodic permanent magnetic focusing system.