中国物理B ›› 2012, Vol. 21 ›› Issue (8): 84101-084101.doi: 10.1088/1674-1056/21/8/084101

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

HEM11 mode magnetically insulated transmission[2mm] line oscillator: simulation and experiment

王冬, 秦奋, 文杰, 陈代兵, 金晓, 安海狮, 张新凯   

  1. Laboratory of High Power Microwave Technology, Institute of Applied Electronics, China Academy of Engineering Physics, Mianyang 621900, China
  • 收稿日期:2011-10-15 修回日期:2012-01-04 出版日期:2012-07-01 发布日期:2012-07-01

HEM11 mode magnetically insulated transmission[2mm] line oscillator: simulation and experiment

Wang Dong (王冬), Qin Fen (秦奋), Wen Jie (文杰), Chen Dai-Bing (陈代兵), Jin Xiao (金晓), An Hai-Shi (安海狮), Zhang Xin-Kai (张新凯 )   

  1. Laboratory of High Power Microwave Technology, Institute of Applied Electronics, China Academy of Engineering Physics, Mianyang 621900, China
  • Received:2011-10-15 Revised:2012-01-04 Online:2012-07-01 Published:2012-07-01
  • Contact: Wang Dong E-mail:mr20001@sina.com

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摘要： A novel magnetically insulated transmission line oscillator (MILO) in which a modified HEM11 mode is taken as its main interaction mode (HEM11 mode MILO) is simulated and experimented in this paper. The excitation of the oscillation mode is made possible by carefully adjusting the arrangement of each resonant cavity in a two-dimensional slow wave structure. The special feature of such a device is that in the slow-wave-structure region, the interaction mode is HEM11 mode which is a TM-like one that could interact with electron beams effectively; and in the coaxial output region, the microwave mode is TE11 mode which has a favourable field density pattern to be directly radiated. Employing an electron beam of about 441 kV and 39.7 kA, HEM11 mode MILO generates a high power microwave output of about 1.47 GW at 1.45 GHz in particle-in-cell simulation. The power conversion efficiency is about 8.4 % and the generated microwave is in a TE11-like circular polarization mode. In a preliminary experiment investigation, high power microwave is detected from the device with a frequency of 1.46 GHz, an output energy of 43 J-47 J, and a pulse duration of 44 ns-49 ns when the input voltage is 430 kV-450 kV, and the diode current is 37 kA-39 kA.

关键词: high power microwave, magnetically insulated transmission line oscillator, asymmetric mode, HEM11 mode

Abstract: A novel magnetically insulated transmission line oscillator (MILO) in which a modified HEM11 mode is taken as its main interaction mode (HEM11 mode MILO) is simulated and experimented in this paper. The excitation of the oscillation mode is made possible by carefully adjusting the arrangement of each resonant cavity in a two-dimensional slow wave structure. The special feature of such a device is that in the slow-wave-structure region, the interaction mode is HEM11 mode which is a TM-like one that could interact with electron beams effectively; and in the coaxial output region, the microwave mode is TE11 mode which has a favourable field density pattern to be directly radiated. Employing an electron beam of about 441 kV and 39.7 kA, HEM11 mode MILO generates a high power microwave output of about 1.47 GW at 1.45 GHz in particle-in-cell simulation. The power conversion efficiency is about 8.4 % and the generated microwave is in a TE11-like circular polarization mode. In a preliminary experiment investigation, high power microwave is detected from the device with a frequency of 1.46 GHz, an output energy of 43 J-47 J, and a pulse duration of 44 ns-49 ns when the input voltage is 430 kV-450 kV, and the diode current is 37 kA-39 kA.

Key words: high power microwave, magnetically insulated transmission line oscillator, asymmetric mode, HEM11 mode

中图分类号:  (Cherenkov radiation)

  • 41.60.Bq
41.75.Ht (Relativistic electron and positron beams)