Repetitive Operation of an S-Band, Short Pulse Relativistic Klystron Amplifier

  • The operation of a repetitively pulsed relativistic klystron amplifier at 100Hz has been reported. The electron beam was reproducibly modulated to >74%. Using a 700kV, 6.5kA, 25ns electron beam and a 500kW Magnetron as inputs, we extracted 1.2GW radiation power in 20ns FWHM pulses at 2.95GHz. The average power is 2.4kW. The efficiency is 24%, and the gain is about 34dB. Limitations attributing directly to the repetitive pulsing at these levels have not been observed.
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  • [1] . Barker R J et al. High-Power Microwave Sources and Tech-nologies. New York: IEEE Press, 2001. 452. Friedman M et al. Intense Microwave and Particle Beams.II ed. Proc. SPIE, 1992, 1629: 83. Friedman M et al. Phys. Rev. Lett., 1995, 75(6): 12144. HUANG Hua, WANG Ping-Shan, WU Zhong-Fa et al.High Power Laser and Particle Beams, 1998, 10(1): 135(in Chinese)(黄华,王平山,吴中发等,强激光与粒子束, 1998, 10(1): 135)5. HUANG Hua, MENG Fan-Bao, CHANG An-Bi et al. High Power Laser and Particle Beams, 2004, 16(10): 1291 (in Chinese)(黄华,孟凡宝,常安碧等,强激光与粒子束, 2004, 16(10):1291)6. HUANG Hua, FAN Zhi-Kai, MENG Fan-Bao et al. HighPower Laser and Particle Beams, 2006, 18(6): 990 (in Chinese)(黄华,范植开,孟凡宝等,强激光与粒子束 2006, 18(6): 990)7. HUANG Hua. Theoretical and Experimental Investigationon S-band Long Pulse Relativistic Klystron Ampli er. Bei-jing: Beijing Graduate School, CAEP, 2006 (in Chinese)(黄华,S波段长脉冲相对论速调管放大器设计的理论与实验研究,北京:中国工程物理研究院研究生部, 2006)8. Levine J S, Harteneck B D. Appl. Phys. Lett. 1994, 65(17):2133
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HUANG Hua, FENG Di-Chao, LUO Guang-Yao, CHEN Zhi-Gang, LEI Lu-Rong, LIAO Yong, ZHANG Yun-Jian, YU Ai-Ming, TAN Jie, YANG Zhou-Bin, JIN Xiao and MENG Fan-Bao. Repetitive Operation of an S-Band, Short Pulse Relativistic Klystron Amplifier[J]. Chinese Physics C, 2007, 31(3): 288-291.
HUANG Hua, FENG Di-Chao, LUO Guang-Yao, CHEN Zhi-Gang, LEI Lu-Rong, LIAO Yong, ZHANG Yun-Jian, YU Ai-Ming, TAN Jie, YANG Zhou-Bin, JIN Xiao and MENG Fan-Bao. Repetitive Operation of an S-Band, Short Pulse Relativistic Klystron Amplifier[J]. Chinese Physics C, 2007, 31(3): 288-291. shu
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Received: 2006-06-26
Revised: 2006-09-01
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Repetitive Operation of an S-Band, Short Pulse Relativistic Klystron Amplifier

    Corresponding author: HUANG Hua,
  • Institute of Applied Electronics, CAEP, Mianyang 621900, China

Abstract: The operation of a repetitively pulsed relativistic klystron amplifier at 100Hz has been reported. The electron beam was reproducibly modulated to >74%. Using a 700kV, 6.5kA, 25ns electron beam and a 500kW Magnetron as inputs, we extracted 1.2GW radiation power in 20ns FWHM pulses at 2.95GHz. The average power is 2.4kW. The efficiency is 24%, and the gain is about 34dB. Limitations attributing directly to the repetitive pulsing at these levels have not been observed.

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