Study of relativistic klystron amplifier input cavity with dual coupling holes by equivalent circuit method

zhang zehai; shu ting; zhang jun; zhong xiaojun; zhu jun

Volume 23 Issue 09

Sep. 2012

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Article Navigation > High Power Laser and Particle Beams > 2011 > 23(09): 0-

cao hongzhang, tang dawei, xu hongbo, et al. Micro-channel heat sink based on boiling-cavitation coupling effect for LD bar[J]. High Power Laser and Particle Beams, 2011, 23.

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zhang zehai, shu ting, zhang jun, et al. Study of relativistic klystron amplifier input cavity with dual coupling holes by equivalent circuit method[J]. High Power Laser and Particle Beams, 2011, 23.

cao hongzhang, tang dawei, xu hongbo, et al. Micro-channel heat sink based on boiling-cavitation coupling effect for LD bar[J]. High Power Laser and Particle Beams, 2011, 23.

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Study of relativistic klystron amplifier input cavity with dual coupling holes by equivalent circuit method

1.
College of Opto-Electric Science and Engineering,National University of Defense Technology,Changsha 410073,China;
2.
Yuanwang2 Tracking Ship,China Satellite Maritime Tracking and Controlling Department,Wuxi 214400,China

Publish Date: 2011-09-15

Abstract

Abstract

An RKA(relativistic klystron amplifier) input cavity with dual coupling holes is analyzed by means of equivalent circuit method, and the scattering matrix (S-matrix) of the coupling system is obtained. Based on the derivative of phase of S21 with respect to its angular frequency, the expression of loaded quality(Q) factor of the system is derived. The value of loaded Q factor can be obtained upon the resonant frequency and group delay, given by high frequency field analysis software. The result is validated against that derived by field decaying method, with good agreement. Moreover, the study method is fast and can realize structure optimization with parameter scanning.
- relativistic klystron amplifier,
- input cavity,
- equivalent circuit,
- loaded quality factor,
- group delay

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