Modeling of A Converging Hollow Beam Electron Optic System for a Ka-Band EIK

被引：0
|
作者：
Ma, Tongli [1 ,2 ]
Zhao, Ding [1 ]
Zhang, Zhaochuan [1 ]
机构：
[1] Chinese Acad Sci, Inst Elect, Key Lab High Power Microwave Sources & Technol, Beijing 100407, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100408, Peoples R China
来源：
2019 INTERNATIONAL VACUUM ELECTRONICS CONFERENCE (IVEC) | 2019年
关键词：
Hollow beam; annular gun; electron optic system; high compression ratio; Ka-band;
D O I：
10.1109/ivec.2019.8744963
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In this paper, the design of a 25 kV, 2.5 A hollow beam electron gun for a Ka-band extended interaction klystron has been analyzed in detail. The hollow beam electron gun has two control focus electrodes, which can switch on/off the device quickly. The influence about the geometry parameters on perveance, beam waist, beam throw and beam laminearity are studied. The simulation result shows a hollow beam with 8% outer envelope ripple amplitude, 100 transmission ratio, 122.8 area compression ratio can propagates 49.4mm (from the cathode to the entrance of collector) with good laminarity under a uniform magnetic flux density of 0.7 T.
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页数：2
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