中国物理B ›› 2008, Vol. 17 ›› Issue (3): 939-942.doi: 10.1088/1674-1056/17/3/032

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Theoretical investigation of an electron beam propagating through a wide gap cavity

林郁正1, 宋玮2, 刘国治3, 邵浩3   

  1. (1)Department of Engineering Physics, Tsinghua University, Beijing 100084, China; (2)Department of Engineering Physics, Tsinghua University, Beijing 100084, China；Northwest Institute of Nuclear Technology, Xian rm 710024, China; (3)Northwest Institute of Nuclear Technology, Xian rm 710024, China
  • 收稿日期:2007-06-05 修回日期:2007-07-19 出版日期:2008-03-04 发布日期:2008-03-04

Theoretical investigation of an electron beam propagating through a wide gap cavity

Song Wei(宋玮)a)b), Lin Yu-Zheng(林郁正)a),Liu Guo-Zhi(刘国治)b), and Shao Hao(邵浩)b)   

  1. a Department of Engineering Physics, Tsinghua University, Beijing 100084, China; b Northwest Institute of Nuclear Technology, Xian rm 710024, China
  • Received:2007-06-05 Revised:2007-07-19 Online:2008-03-04 Published:2008-03-04

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摘要： This paper presents a self-consistent nonlinear theory of the current and energy modulations when an electron beam propagates through an inductively-loaded wide gap cavity. The integro-differential equations are obtained to describe the modulation of the beam current and kinetic energy. A relativistic klystron amplifier (RKA) model is introduced, which uses an inductively-loaded wide gap cavity as an input cavity. And a numerical code is developed for the extended model based on the equations, from which some relations about the modulated current and modulated energy are numerically given.

关键词: RKA, wide gap cavity, intense electron beam, modulation

Abstract: This paper presents a self-consistent nonlinear theory of the current and energy modulations when an electron beam propagates through an inductively-loaded wide gap cavity. The integro-differential equations are obtained to describe the modulation of the beam current and kinetic energy. A relativistic klystron amplifier (RKA) model is introduced, which uses an inductively-loaded wide gap cavity as an input cavity. And a numerical code is developed for the extended model based on the equations, from which some relations about the modulated current and modulated energy are numerically given.

Key words: RKA, wide gap cavity, intense electron beam, modulation

中图分类号:  (Relativistic electron and positron beams)

  • 41.75.Ht
29.25.Bx (Electron sources) 84.40.Fe (Microwave tubes (e.g., klystrons, magnetrons, traveling-wave, backward-wave tubes, etc.))