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Chin. Phys. B, 2009, Vol. 18(12): 5507    DOI: 10.1088/1674-1056/18/12/063
CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES Prev   Next  

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

Liu Di-Wei, Yuan Xue-Song, Yan Yang, Liu Sheng-Gang
THz Research Center, Research Institute of High Energy Electronics, University of Electronic Science and Technology of China, Chengdu 610054, China
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.
Keywords:  terahertz      frequency-quadrupling gyroklystron      self-consistent nonlinear analysis  
Received:  27 February 2009      Revised:  07 April 2009      Published:  20 December 2009
PACS:  84.40.Fe (Microwave tubes (e.g., klystrons, magnetrons, traveling-wave, backward-wave tubes, etc.))  
  41.75.Fr (Electron and positron beams)  
  41.85.Ct (Particle beam shaping, beam splitting)  
  84.40.Ik (Masers; gyrotrons (cyclotron-resonance masers))  
Fund: Project supported by National Natural Science Foundation of China (Grant No 10676110) and 973 Program of China (Grant No 2007CB310401).

Cite this article: 

Liu Di-Wei, Yuan Xue-Song, Yan Yang, Liu Sheng-Gang Self-consistent nonlinear analysis of a frequency-quadrupling terahertz gyroklystron 2009 Chin. Phys. B 18 5507

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