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Title: An S-band high gain relativistic klystron amplifier with high phase stability

For the purpose of coherent high power microwave combining, an S-band high gain relativistic klystron amplifier with high phase stability is presented and studied. By the aid of 3D particle-in-cell code and circuit simulation software, the mechanism of parasitic oscillation in the device is investigated. And the RF lossy material is adopted in the simulation and experiment to suppress the oscillation. The experimental results show that with an input RF power of 10 kW, a microwave pulse with power of 1.8 GW is generated with a gain of 52.6 dB. And the relative phase difference fluctuation between output microwave and input RF signal is less than ±10° in 90 ns.
Authors:
 [1] ;  [2] ; ; ;  [1] ;  [3]
  1. Institute of Applied Electronics, China Academy of Engineering Physics, Mianyang 621900 (China)
  2. (China)
  3. College of Science, Southwestern University of Science and Technology, Mianyang 621010 (China)
Publication Date:
OSTI Identifier:
22403288
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 21; Journal Issue: 11; Other Information: (c) 2014 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; AMPLIFIERS; FLUCTUATIONS; GAIN; KLYSTRONS; MICROWAVE RADIATION; OSCILLATIONS; PHASE STABILITY; RELATIVISTIC RANGE; SIMULATION