Formation of Laminar Electron Flow for a High-Power Sub-THz Gyrotron

DOI Web Site 被引用文献7件 参考文献5件
  • YAMAGUCHI Yuusuke
    Research Center for Development of Far-Infrared Region, University of Fukui, Fukui 910-8507, Japan
  • TATEMATSU Yoshinori
    Research Center for Development of Far-Infrared Region, University of Fukui, Fukui 910-8507, Japan
  • SAITO Teruo
    Research Center for Development of Far-Infrared Region, University of Fukui, Fukui 910-8507, Japan
  • IKEDA Ryosuke
    Research Center for Development of Far-Infrared Region, University of Fukui, Fukui 910-8507, Japan
  • MUDIGANTI Jagadish C.
    Research Center for Development of Far-Infrared Region, University of Fukui, Fukui 910-8507, Japan
  • OGAWA Isamu
    Research Center for Development of Far-Infrared Region, University of Fukui, Fukui 910-8507, Japan
  • IDEHARA Toshitaka
    Research Center for Development of Far-Infrared Region, University of Fukui, Fukui 910-8507, Japan

抄録

This paper describes the design of a magnetron-injection gun for a 100 kW, 300 GHz gyrotron. With an increase in power and frequency, performance of the gyrotron becomes quite sensitive to the quality of the electron beam. Formation of a laminar electron flow is essential for the realization of a high quality beam with small velocity spread. In this study, a new method is proposed for the evaluation of the laminarity, and applied to the design optimization of the electrodes. It is found that the laminarity depends not only on the conventional design parameter of the cathode slant angle, but also on the spatial distribution of the electric field inside the beam.

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