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

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; MENG Fan-Bao

Chinese Physics C> 2007, Vol. 31> Issue(3) : 288-291

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

Institute of Applied Electronics, CAEP, Mianyang 621900, China

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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.

References

[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.

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Received: 2006-06-26
Revised: 2006-09-01

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沈阳化工大学材料科学与工程学院沈阳 110142

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

Corresponding author: HUANG Hua,

Institute of Applied Electronics, CAEP, Mianyang 621900, China

Received Date: 2006-06-26
Accepted Date: 2006-09-01
Available Online: 2007-03-05

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.