A Sheet Beam Electron Gun With High Compression Ratio and Long Transmission Distance Performance for W-Band TWT Applications

被引：7

作者：

Li, Ying ^{[1
,2
]}

Wen, Zheng ^{[1
,2
]}

Wang, Xiaoxia ^{[1
]}

Fan, Yu ^{[1
]}

Luo, Jirun ^{[1
,2
]}

Zhu, Min ^{[1
]}

Guo, Wei ^{[1
]}

Ding, Yaogen ^{[1
]}

机构：

[1] Chinese Acad Sci, Aerosp Informat Res Inst, Key Lab Sci & Technol High Power Microwave Source, Beijing 100094, Peoples R China

[2] Univ Chinese Acad Sci, Sch Elect Elect & Commun Engn, Beijing 100049, Peoples R China

来源：

IEEE TRANSACTIONS ON PLASMA SCIENCE | 2021年 / 49卷 / 02期

基金：

美国国家科学基金会;

关键词：

Cathodes; Electron guns; Focusing; Electron beam applications; Power generation; Force; Shape; Electron gun; high compression ratio; permanent magnetic focusing; sheet beam; DESIGN; SYSTEM;

D O I：

10.1109/TPS.2021.3051162

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

A sheet beam electron gun with high compression ratio and long transmission distance performance for $W$ -band traveling-wave tube (TWT) is presented. A beam focusing electrode (BFE) with two pairs of unequal length outstretched structures is designed to provide equal positions of beam waist in both horizontal and vertical planes, which is beneficial to obtain large compression ratio and keep the beam cross section shape over a long distance. The operational voltage is set as 30 kV. The beam current is 0.505 A, and the corresponding cathode current density is about 5.59 A/cm(2). The simulation results show that the electron gun can provide a stable sheet beam under a 0.85-T magnet field. The compression ratio of the obtained sheet beam can be over 35, and the sheet beam can be transported through a 126-mm beam tunnel without interception with a 0.6 fill factor. The parameter sensitivities of the gun are analyzed and discussed as well.

引用

页码：734 / 741

页数：8

共 21 条

[1]

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