Design of transverse magnetic field sweeping solenoids for 140 GHz mega-watt gyrotrons

The Journal of Engineering

Jinjun Feng¹  Xu Zeng²  Bentian Liu³ 

[1]Beijing Vacuum Electronics Research Institute , Beijing 100015 , People&apos

[2]National Key Laboratory of Science and Technology on Vacuum Electronics , Beijing 100015 , People&apos

[3]s Republic of China

关键词: collector;    power density;    Beijing Vacuum Electronics Research Institute;    periodical changing magnetic field;    hot testing;    gyrotron assembly;    mega-watt gyrotrons;    transverse magnetic field;    frequency 140 GHz;    TMFSS;    sweeping solenoids;    electron trajectories;   

DOI  :  10.1049/joe.2018.0104

学科分类：工程和技术（综合）

来源: IET

【 摘 要 】

As the overlarge power density at the collector of mega-watt (MW) gyrotrons limits the increase in their average output power and pulse width, transverse magnetic field sweeping solenoids (TMFSS) with periodical changing magnetic field have been designed for a 140 GHz MW gyrotron developed and tested at Beijing Vacuum Electronics Research Institute. The analysis of the electron trajectories in the collector and the simulation results indicate that the power density could be decreased significantly by applying the solenoids, which will effectively ensure the stable operation of the tube. Meanwhile, different structures of the TMFSS were studied and compared, with the optimised one being used in the future gyrotron assembly and hot testing.

【 授权许可】

CC BY