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We have investigated the pulse shortening problem of relativistic klystron amplifier. It is shown that non-working mode self-excitation is an important cause of pulse shortening. Theoretical and numerical analyses show the mechanism of non-working mode self-excitation caused by the coupling between cavities. By the use of radio frequency absorbers, the problem of non-working mode self-excitation can be solved. In the experiment, the RF output power is 920 MW, the output power pulse width of the device can be increased from 77 ns to 137 ns.
[1] Benford J, Swegle J A, Schamiloglu E 2007 High Power Microwaves (New Mexico: CRC Press) p313
[2] Agee F J 1998 High Power Microw. Sources 26 235
[3] Chen Y D, Jin X, Li Z H, Wu Y 2012 Acta Phys. Sin. 61 228501 (in Chinese) [陈永东, 金晓, 李正红, 吴洋 2012 61 228501]
[4] Roybal W T 2005 Ph. D. Dissertation (America: University of New Mexico) p102
[5] Zhang Z H, Shu T, Zhang J, Liu J, Zhu J 2012 High Power Laser Particle Beams 23 2989 (in Chinese) [张泽海, 舒挺, 张军, 刘静, 朱俊 2012 强激光与粒子束 23 2989]
[6] Xie J L, Zhao Y X 1966 Klystron Bunching Theory (Beijing: Science Press) p32 (in Chinese) [谢家麟, 赵永翔 1966 速调管群聚理论 (北京: 科学出版社) 第32页]
[7] Li Z H, Meng F B, Chang A B, Huang H, Ma Q S 2005 Acta Phys. Sin. 54 3578 (in Chinese) [李正红, 孟凡宝, 常安碧, 黄华, 马乔生 2005 54 3578]
[8] Luo J R, Cui J, Zhu M, Guo W 2013 Chin. Phys. B 22 067803
[9] Ding Y G 2010 Design, Manufacture and Application of High Power Klystron (Beijing: National Defense Industry Press) p356 (in Chinese) [丁耀根 2010 大功率速调管的设计制造和应用 (北京: 国防工业出版社) 第356页]
[10] Ma Z, Cao C T, Liu Q F, Wang J B 2012 Chin. Phys. Lett. 29 038401
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[1] Benford J, Swegle J A, Schamiloglu E 2007 High Power Microwaves (New Mexico: CRC Press) p313
[2] Agee F J 1998 High Power Microw. Sources 26 235
[3] Chen Y D, Jin X, Li Z H, Wu Y 2012 Acta Phys. Sin. 61 228501 (in Chinese) [陈永东, 金晓, 李正红, 吴洋 2012 61 228501]
[4] Roybal W T 2005 Ph. D. Dissertation (America: University of New Mexico) p102
[5] Zhang Z H, Shu T, Zhang J, Liu J, Zhu J 2012 High Power Laser Particle Beams 23 2989 (in Chinese) [张泽海, 舒挺, 张军, 刘静, 朱俊 2012 强激光与粒子束 23 2989]
[6] Xie J L, Zhao Y X 1966 Klystron Bunching Theory (Beijing: Science Press) p32 (in Chinese) [谢家麟, 赵永翔 1966 速调管群聚理论 (北京: 科学出版社) 第32页]
[7] Li Z H, Meng F B, Chang A B, Huang H, Ma Q S 2005 Acta Phys. Sin. 54 3578 (in Chinese) [李正红, 孟凡宝, 常安碧, 黄华, 马乔生 2005 54 3578]
[8] Luo J R, Cui J, Zhu M, Guo W 2013 Chin. Phys. B 22 067803
[9] Ding Y G 2010 Design, Manufacture and Application of High Power Klystron (Beijing: National Defense Industry Press) p356 (in Chinese) [丁耀根 2010 大功率速调管的设计制造和应用 (北京: 国防工业出版社) 第356页]
[10] Ma Z, Cao C T, Liu Q F, Wang J B 2012 Chin. Phys. Lett. 29 038401
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