Two-cavity wide-gap klystron amplifier driven by relativistic backward-wave oscillator

Bai Xianchen; Yang Jianhua; Zhang Jiande; Jin Zhenxing

doi:10.3788/HPLPB20132505.1231

Volume 25 Issue 05

Mar. 2013

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Article Navigation > High Power Laser and Particle Beams > 2013 > 25(05): 1231-1235

Bai Zhen, Li Guolin, Zhang Jun. X-band high power microwave mode-selective directional coupler[J]. High Power Laser and Particle Beams, 2013, 25: 1747-1750. doi: 10.3788/HPLPB20132507.1747

Citation:

Bai Xianchen, Yang Jianhua, Zhang Jiande, et al. Two-cavity wide-gap klystron amplifier driven by relativistic backward-wave oscillator[J]. High Power Laser and Particle Beams, 2013, 25: 1231-1235. doi: 10.3788/HPLPB20132505.1231

Bai Zhen, Li Guolin, Zhang Jun. X-band high power microwave mode-selective directional coupler[J]. High Power Laser and Particle Beams, 2013, 25: 1747-1750. doi: 10.3788/HPLPB20132507.1747

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Two-cavity wide-gap klystron amplifier driven by relativistic backward-wave oscillator

doi: 10.3788/HPLPB20132505.1231

1.
College of Opto-electric Science and Engineering,National University of Defense Technology,Changsha 410073,China

Received Date: 2012-10-17
Rev Recd Date: 2012-11-21
Publish Date: 2013-03-12

Abstract

Abstract

An inductively-loaded two-cavity wide-gap klystron amplifier (WKA) with high power injection driven by a relativistic backward wave oscillator (RBWO) is studied theoretically and experimentally for solving the problem of power insufficiency of existing seed sources. The electric power of the amplifier and oscillator is supplied by a single accelerator capable of producing dual electron beams. The main switch is electrically triggered to stabilize the diode voltage and the frequency of the RBWO. In the experiments, the frequency and phase of the WKA are locked by the RBWO. The relative phase difference of the applied microwave devices is locked within 16 in a single shot, and a phase jitter of 11 is obtained within a series of 4 shots with a duration of about 40 ns. Under a diode voltage of 530 kV and injection power of about 22 MW, an output power of 230 MW is achieved from the RBWO-WKA system with a conversion efficiency of approximately 11% and power gain of approximately 10 dB.
- power combination,
- wide-gap klystron amplifier,
- high power injection,
- phase locking

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