中国物理B ›› 2009, Vol. 18 ›› Issue (12): 5507-5510.doi: 10.1088/1674-1056/18/12/063

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Self-consistent nonlinear analysis of a frequency-quadrupling terahertz gyroklystron

刘頔威, 袁学松, 鄢扬, 刘盛纲   

  1. THz Research Center, Research Institute of High Energy Electronics, University of Electronic Science and Technology of China, Chengdu 610054, China
  • 收稿日期:2009-02-27 修回日期:2009-04-07 出版日期:2009-12-20 发布日期:2009-12-20
  • 基金资助:
    Project supported by National Natural Science Foundation of China (Grant No 10676110) and 973 Program of China (Grant No 2007CB310401).

Self-consistent nonlinear analysis of a frequency-quadrupling terahertz gyroklystron

Liu Di-Wei(刘頔威)†,Yuan Xue-Song(袁学松), Yan Yang(鄢扬), and Liu Sheng-Gang(刘盛纲)   

  1. THz Research Center, Research Institute of High Energy Electronics, University of Electronic Science and Technology of China, Chengdu 610054, China
  • Received:2009-02-27 Revised:2009-04-07 Online:2009-12-20 Published:2009-12-20
  • Supported by:
    Project supported by National Natural Science Foundation of China (Grant No 10676110) and 973 Program of China (Grant No 2007CB310401).

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摘要： This paper analyses a three-cavity frequency-quadrupling terahertz gyroklystron with successive frequency-doubling in each cavity with self-consistent nonlinear theory. The beam--wave interaction efficiency and the electron bunching process are studied. The variation of output efficiency with the length of drift tubes and output power and the variation of Ohmic loss with the length of output cavity are considered. Numerical simulations predict an optimal output efficiency of 1.8%, a power output of more than 2~kW and a gain of 33~dB after taking into account Ohmic losses when the frequency-quadrupling gyroklystron, driven by a 40-kV, 3-A electron beam and 1 Watt input power, operates at 225~GHz.

Abstract: This paper analyses a three-cavity frequency-quadrupling terahertz gyroklystron with successive frequency-doubling in each cavity with self-consistent nonlinear theory. The beam--wave interaction efficiency and the electron bunching process are studied. The variation of output efficiency with the length of drift tubes and output power and the variation of Ohmic loss with the length of output cavity are considered. Numerical simulations predict an optimal output efficiency of 1.8%, a power output of more than 2 kW and a gain of 33 dB after taking into account Ohmic losses when the frequency-quadrupling gyroklystron, driven by a 40-kV, 3-A electron beam and 1 Watt input power, operates at 225 GHz.

Key words: frequency-quadrupling gyroklystron, terahertz, self-consistent nonlinear analysis

中图分类号:  (Microwave tubes (e.g., klystrons, magnetrons, traveling-wave, backward-wave tubes, etc.))

  • 84.40.Fe
41.75.Fr (Electron and positron beams) 41.85.Ct (Particle beam shaping, beam splitting) 84.40.Ik (Masers; gyrotrons (cyclotron-resonance masers))