Design of a 330-GHz Frequency-Tunable Gyrotron With a Prebunched Circuit

被引：4

作者：

Gao, Zi-Chao ^{[1
]}

Du, Chao-Hai ^{[1
]}

Li, Fan-Hong ^{[1
]}

Zhang, Zi-Wen ^{[1
]}

Li, Si-Qi ^{[1
]}

Qi, Xiang-Bo ^{[2
]}

Liu, Pu-Kun ^{[1
]}

机构：

[1] Peking Univ, Sch Elect, Beijing 100871, Peoples R China

[2] Beijing Inst Long March Vehicle, Beijing 100076, Peoples R China

来源：

IEEE TRANSACTIONS ON ELECTRON DEVICES | 2022年 / 69卷 / 04期

基金：

北京市自然科学基金; 中国国家自然科学基金;

关键词：

Broadband tunability; harmonic gyrotron; magnetron injection gun (MIG); prebunched circuit; DYNAMIC NUCLEAR-POLARIZATION; NMR; OPERATION; GHZ;

D O I：

10.1109/TED.2022.3152461

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：

The design of a 330-GHz second harmonic gyrotron with broadband tunability is presented in this article. Loaded with a prebunched cavity, the output power is almost doubled (similar to 216 W, corresponding to the output efficiency of 3.6%) compared with a conventional open-cavity scheme, and the tuning range is similar to 1.85 GHz. To further reveal the feasibility of the prebunching section for the harmonic operations, it is theoretically demonstrated that the phase shift inside the prebunching section plays an important role in improving the interaction performance. The dependence of the phase shift on the cavity dimension and propagation constant is explored, which instructs the circuit optimization. Moreover, the engineering designs of the magnetron injection gun, the output window, and the collector are presented under a 10-T super-conducting magnet. The overall configuration of the tube is exhibited at the end of the article.

引用

页码：2058 / 2065

页数：8

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