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Title: An X-band phase-locked relativistic backward wave oscillator

For the purpose of coherent high power microwave combining at high frequency band, an X-band phase-locked relativistic backward wave oscillator is presented and investigated. The phase-locking of the oscillator is accomplished by modulation of the electron beam before it reaches the oscillator. To produce a bunched beam with an acceptable injected RF power requirement, an overmoded input cavity is employed to provide initial density modulation. And a buncher cavity is introduced to further increase the modulation depth. When the beam enters the oscillator, the modulation depth is enough to lock the frequency and phase of the output microwave generated by the oscillator. Particle-in-cell simulation shows that an input power of 90 kW is sufficient to lock the frequency and phase of 1.5 GW output microwave with locking bandwidth of 60 MHz.
Authors:
 [1] ;  [2] ; ; ; ;  [1]
  1. Institute of Applied Electronics, China Academy of Engineering Physics, Mianyang 621900 (China)
  2. (China)
Publication Date:
OSTI Identifier:
22490076
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 22; Journal Issue: 8; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; BLOCKING OSCILLATORS; COMPUTERIZED SIMULATION; DENSITY; ELECTRON BEAMS; MHZ RANGE; MICROWAVE RADIATION; MODE LOCKING; MODULATION; RELATIVISTIC RANGE