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Experimental study on a high power microwave amplifier driven by low rf power

## Experimental study on a high power microwave amplifier driven by low rf power

Wu Yang, Tang Chuan-Xiang, Xu Zhou, Xu Yong, Jin Xiao, Chang An-Bi, Li Zheng-Hong, Huang Hua, Liu Zhong, Luo Xiong, Ma Qiao-Sheng
• #### Abstract

In order to suppress high order mode self-oscillation in a high gain amplifier, some special procedures, such as decreasing the coupling between beam and rf field in the forepart of the amplifier, are taken such that the tube works in a fully amplified state in an operation range. In simulation, the rf output power is 1.7 GW with a beam of 7.5 kA at 750 kV when input power is 6.8 kW and the corresponding gain is 53.9dB. Based on the results from 2D PIC simulation, the experiment is performed on the Sinus accelerator. In experiment, the amplifier is driven by a beam of 8 kA at 800 kV, and the maximum output power is 2.04 GW when input power is 62 kW; the maximum gain reaches 46.7dB when the input reduces to 39 kW, the corresponding output power is about 1.84 GW. Both the simulation and the experiment prove that a kW-level rf power can drive the tube to generate a GW-level output power.

• Funds:

#### References

 [1] Barker R J, Schamiloglu E 2001 High-Power Microwave Sources and Technologies(New York: IEEE) Chap 3 [2] Benford J, Swegle J 1992 High Power Microwave Second Edition(New York, London: Taylor & Francis Group) [3] Huang H, Meng F B, Chang A B, Ma Q S, Zhang Y H, Gan Y Q, Chen D B, Luo M, Gong S G 2004 High Power Laser and Particle Beams 16 1291(in Chinese)[黄 华、孟凡宝、常安碧、马乔生、张永辉、甘延清、陈代兵、罗 敏、龚胜刚 2004 强激光与粒子束 16 1291] [4] Huang H, Fan Z K, Tan J, Ma Q S, Gan Y Q, Chang A B 2004 Acta Phys. Sin. 53 1129(in Chinese)[黄 华、范植开、谭 杰、马乔生、 甘延青、常安碧 2004 物理学报 53 1129] [5] Agee F J 1998 IEEE Trans. Plas. Sci. 26 235 [6] Friedman M, Fernsler R, Slinker S, Hubbard R, Lampe M 1995 Phys. Rev. Lett. 75 1214 [7] Lau Y Y, Friedman M, Krall J 1990 IEEE Trans. Plas. Sci. 18 553 [8] Li Z H, Huang H, Chang A B, Meng F B 2005 Acta Phys. Sin. 54 1564(in Chinese) [李正红、黄 华、常安碧、孟凡宝 2005 物理学报54 1564] [9] Li Z H, Chang A B, Ju B Q, Zhang Y H, Xiang F, Zhao D L, Gan Y Q, Liu Z, Su C, Huang H 2007 Acta Phys. Sin. 56 2603(in Chinese)[李正红、常安碧、鞠炳全、张永辉、向 飞、赵殿林、甘延青、刘 忠、苏 昶、黄 华 2007 物理学报 56 2603]

#### Cited By

•  [1] Barker R J, Schamiloglu E 2001 High-Power Microwave Sources and Technologies(New York: IEEE) Chap 3 [2] Benford J, Swegle J 1992 High Power Microwave Second Edition(New York, London: Taylor & Francis Group) [3] Huang H, Meng F B, Chang A B, Ma Q S, Zhang Y H, Gan Y Q, Chen D B, Luo M, Gong S G 2004 High Power Laser and Particle Beams 16 1291(in Chinese)[黄 华、孟凡宝、常安碧、马乔生、张永辉、甘延清、陈代兵、罗 敏、龚胜刚 2004 强激光与粒子束 16 1291] [4] Huang H, Fan Z K, Tan J, Ma Q S, Gan Y Q, Chang A B 2004 Acta Phys. Sin. 53 1129(in Chinese)[黄 华、范植开、谭 杰、马乔生、 甘延青、常安碧 2004 物理学报 53 1129] [5] Agee F J 1998 IEEE Trans. Plas. Sci. 26 235 [6] Friedman M, Fernsler R, Slinker S, Hubbard R, Lampe M 1995 Phys. Rev. Lett. 75 1214 [7] Lau Y Y, Friedman M, Krall J 1990 IEEE Trans. Plas. Sci. 18 553 [8] Li Z H, Huang H, Chang A B, Meng F B 2005 Acta Phys. Sin. 54 1564(in Chinese) [李正红、黄 华、常安碧、孟凡宝 2005 物理学报54 1564] [9] Li Z H, Chang A B, Ju B Q, Zhang Y H, Xiang F, Zhao D L, Gan Y Q, Liu Z, Su C, Huang H 2007 Acta Phys. Sin. 56 2603(in Chinese)[李正红、常安碧、鞠炳全、张永辉、向 飞、赵殿林、甘延青、刘 忠、苏 昶、黄 华 2007 物理学报 56 2603]
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•  Citation:
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• Abstract views:  3460
• Cited By: 0
##### Publishing process
• Received Date:  24 December 2009
• Accepted Date:  26 May 2010
• Published Online:  15 April 2011

## Experimental study on a high power microwave amplifier driven by low rf power

• 1. (1)Department of Engineering Physics, Tsinghua University, Beijing 100084, China; (2)Institute of Applied Electronics, CAEP, Mianyang 621900, China

Abstract: In order to suppress high order mode self-oscillation in a high gain amplifier, some special procedures, such as decreasing the coupling between beam and rf field in the forepart of the amplifier, are taken such that the tube works in a fully amplified state in an operation range. In simulation, the rf output power is 1.7 GW with a beam of 7.5 kA at 750 kV when input power is 6.8 kW and the corresponding gain is 53.9dB. Based on the results from 2D PIC simulation, the experiment is performed on the Sinus accelerator. In experiment, the amplifier is driven by a beam of 8 kA at 800 kV, and the maximum output power is 2.04 GW when input power is 62 kW; the maximum gain reaches 46.7dB when the input reduces to 39 kW, the corresponding output power is about 1.84 GW. Both the simulation and the experiment prove that a kW-level rf power can drive the tube to generate a GW-level output power.

Reference (9)

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