Novel transit-time oscillator (TTO) combining advantages of radial-line and axial TTO

doi:10.1088/1674-1056/28/8/085201

中国物理B ›› 2019, Vol. 28 ›› Issue (8): 85201-085201.doi: 10.1088/1674-1056/28/8/085201

• PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES • 上一篇下一篇

Novel transit-time oscillator (TTO) combining advantages of radial-line and axial TTO

Wei-Li Xu(徐伟力), Jun-Tao He(贺军涛), Jun-Pu Ling(令钧溥), Li-Li Song(宋莉莉), Bing-Fang Deng(邓秉方), Ouzhixiong Dai(戴欧志雄), Xing-Jun Ge(葛行军)

College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha 410073, China

收稿日期:2019-04-02 修回日期:2019-05-21 出版日期:2019-08-05 发布日期:2019-08-05
通讯作者: Jun-Tao He E-mail:hejuntao12@163.com
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. 61701516).

Novel transit-time oscillator (TTO) combining advantages of radial-line and axial TTO

Wei-Li Xu(徐伟力), Jun-Tao He(贺军涛), Jun-Pu Ling(令钧溥), Li-Li Song(宋莉莉), Bing-Fang Deng(邓秉方), Ouzhixiong Dai(戴欧志雄), Xing-Jun Ge(葛行军)

College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha 410073, China

Received:2019-04-02 Revised:2019-05-21 Online:2019-08-05 Published:2019-08-05
Contact: Jun-Tao He E-mail:hejuntao12@163.com
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 61701516).

摘要/Abstract

摘要： A novel transit-time oscillator (TTO) is proposed in this paper. An axial cathode which has been widely used in high power microwave (HPM) source and an extractor with radial feature are adopted. In this way, the inherent advantages of axial and radial TTO, both of which can be utilized as high-quality intense relativistic electron beam (IREB), can be generated and the power capacity is also increased. The working mode is π/2 mode of TM₀₁ based on small-signal theory, and under the same energy storage, the maximum electric field in extractor decreases 16.3%. Besides, by utilizing the natural bending of the solenoid, this TTO saves over 60% of the length required by the uniform magnetic field, and consequently reduces the energy consumed by solenoid. The PIC simulation shows that by using 1.0-T decreasing magnetic field generated by the shorter solenoid, 3.37-GW microwave at 12.43 GHz is generated with 620-kV and 13.27-kA input, and the overall conversion efficiency is 41%.

关键词: axial TTO, radial-feature extractor, larger power capacity, shorter uniform magnetic field

Abstract: A novel transit-time oscillator (TTO) is proposed in this paper. An axial cathode which has been widely used in high power microwave (HPM) source and an extractor with radial feature are adopted. In this way, the inherent advantages of axial and radial TTO, both of which can be utilized as high-quality intense relativistic electron beam (IREB), can be generated and the power capacity is also increased. The working mode is π/2 mode of TM₀₁ based on small-signal theory, and under the same energy storage, the maximum electric field in extractor decreases 16.3%. Besides, by utilizing the natural bending of the solenoid, this TTO saves over 60% of the length required by the uniform magnetic field, and consequently reduces the energy consumed by solenoid. The PIC simulation shows that by using 1.0-T decreasing magnetic field generated by the shorter solenoid, 3.37-GW microwave at 12.43 GHz is generated with 620-kV and 13.27-kA input, and the overall conversion efficiency is 41%.

Key words: axial TTO, radial-feature extractor, larger power capacity, shorter uniform magnetic field

中图分类号: (Electrostatic waves and oscillations (e.g., ion-acoustic waves))

52.35.Fp

徐伟力, 贺军涛, 令钧溥, 宋莉莉, 邓秉方, 戴欧志雄, 葛行军. Novel transit-time oscillator (TTO) combining advantages of radial-line and axial TTO[J]. 中国物理B, 2019, 28(8): 85201-085201.

Wei-Li Xu(徐伟力), Jun-Tao He(贺军涛), Jun-Pu Ling(令钧溥), Li-Li Song(宋莉莉), Bing-Fang Deng(邓秉方), Ouzhixiong Dai(戴欧志雄), Xing-Jun Ge(葛行军). Novel transit-time oscillator (TTO) combining advantages of radial-line and axial TTO[J]. Chin. Phys. B, 2019, 28(8): 85201-085201.

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Novel transit-time oscillator (TTO) combining advantages of radial-line and axial TTO

Novel transit-time oscillator (TTO) combining advantages of radial-line and axial TTO

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