Design of C-band 50 MW klystron with traveling wave output structure

Zhang Rui; Wang Yong

doi:10.3788/HPLPB20122412.2858

Volume 24 Issue 12

Nov. 2012

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Article Navigation > High Power Laser and Particle Beams > 2012 > 24(12): 2858-2864

Li Shiwen, Feng Guoying, Li wei, et al. Preparation and phase analysis of Cu nano-power by electrical explosion[J]. High Power Laser and Particle Beams, 2013, 25: 2408-2412. doi: 10.3788/HPLPB20132509.2408

Citation:

Zhang Rui, Wang Yong. Design of C-band 50 MW klystron with traveling wave output structure[J]. High Power Laser and Particle Beams, 2012, 24: 2858-2864. doi: 10.3788/HPLPB20122412.2858

Citation:

Zhang Rui, Wang Yong. Design of C-band 50 MW klystron with traveling wave output structure[J]. High Power Laser and Particle Beams, 2012, 24: 2858-2864. doi: 10.3788/HPLPB20122412.2858

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Design of C-band 50 MW klystron with traveling wave output structure

doi: 10.3788/HPLPB20122412.2858

Zhang Rui^1,2,
Wang Yong¹

1.
Institute of Electronics,Chinese Academy of Sciences,Beijing 100190,China;
2.
Graduate University of Chinese Academy of Sciences,Beijing 100049,China

Received Date: 2012-01-12
Rev Recd Date: 2012-09-10
Publish Date: 2012-11-05

Abstract

Abstract

This paper presents the simulation study of a C-band 50 MW klystron with disc-loaded waveguide traveling wave output structure. The electron gun with a perveance of 1.53 P is designed. The gun has a voltage gradient lower than 22.1 kV/mm and a cathode load current lower than 6.3 A/cm2. The beam focusing system is a space-charge balanced flow type with solenoid magnet structure and the focusing beam trajectories have a good laminar condition. A single gap cavity is adopted instead of the traveling wave output structure in the initial beam-wave interaction simulation to decide the parameters of the cavities except the output structure. A C-band disc-loaded waveguide output structure working at /2 mode is designed and the dispersion and interaction impedance of the structure are determined by the CST code. The beam-wave interaction system with disc-loaded waveguide output structure is simulated by a three-dimensional PIC code. More than 50 MW output power is obtained. The efficiency is more than 45% and the saturate gain is more than 50 dB. The voltage gradient of the disc-loaded waveguide output structure is 30 percent less than that of the single gap cavity and there is an increase of 4% in efficiency above that of the single gap cavity.
- klystron,
- disc-loaded waveguide,
- traveling wave output structure,
- beam-wave interaction

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