Multipactor Experiment on a Micro-pulse Electron Gun

  • The micro-pulse electron gun (MPG) is a new type of cold cathode microwave electron gun that can produce short duration, high current density electron beam. The principle of MPG is multipactor (or multipacting). In this paper, our proof-of-principle experiment on a MPG is presented. One kind of Cu-Al-Mg alloy has been used as the cold cathode. A current with the density up to 100mA/cm2 was observed. The results agree well with the analytical calculation and the computer simulation. The experiment verifies both the analytical theory and the computer code, and prepares the way for the higher current density approach.
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  • [1] . Mako F M, Peter W. A High-Current Micro-Pulse ElectronGun. InμProc. of the 1993 Particle Accelerator Conference.IEEE, 1993. 2702-27042. Len L K, Mako F M. Self-Bunching Electron Guns.InμProc. of the 1999 Particle Accelerator Conference.IEEE, 1999. 2702-27043. Guharay S K, Len L K, Mako F M. High-CurrentMicro-Pulse Electron Guns and Accelerator Applications.In:Proc. of the 2001 Particle Accelerator Conference.IEEE, 2001. 2084-20864. TANG Chuan-Xiang, JIANG Zhan-Feng, TIAN Kai et al.High Energy Phys. and Nucl. Phys., 2003, 27(6): 546-550(in Chinese)(唐传祥,蒋占峰,田凯等.高能物理与核物理,2003, 27(6):546-550)5. TANG Chuan-Xiang, TIAN Kai, CHEN Huai-Bi et al. HighPower Laser and Particle Beams, 2003, 15(8): 788-792(in Chinese)(唐传祥,田凯,陈怀璧等.强激光与粒子束,2003,15(8)788-792)6. PEI Yuan-Ji, HE Wen-Can, JIN Kai. The Simulation andAnalysis of Secondary Emission Microwave Electron Gun.In:Proc. of 2001 APAC. Beijing:Institute of High EnergyPhysics, the Chinese Academy of Sciences, 2001. 562-5647. SUN Hong-Bing, PEI Yuan-Ji, XIE Ai-Gen et al. High EnergyPhys. and Nucl. Phys., 2005, 29(1): 95-98(in Chinese)(孙红兵,裴元吉,谢爱根等.高能物理与核物理,200329(1): 93-98)8. YANG Xing-Fan. A High DF, Thermionic 4+1/2cells RF gun Studies. Ph.D. Thesis. Mianyang: CAEP, 2000(in Chinese)(杨兴繁.高工作比、热阴极4+1/2腔微波电f枪研究.博士论文.绵阳:中国工程物理研究院,2000)9. Vaughan J R M. IEEE Trans. Electron Devices, 1988,35(7): 1172-118010. Kishek R A, Lau Y Y, Ang L K. Phys. Plasmas, 1998, 5(5):2120-212611. Kishek R A. Interaction of Multipactor Discharge and RFStructures. Ph.D. Thesis. Ann Arbor university of Michigan,199712. Valfells A. Multipactor Discharge: Frequency Response,Suppression, and Relation to Window Breakdown. Ph.D.Thesis. Ann Arbor university of Michigan, 200013. Riyopoulos S. Phys. Plasmas, 1998, 5(1): 305-31114. PAN Qi-Han, WANG Xin-Ping, LI Jie-Lan et al. Copper Alloy for Cold-Cathode Material and Production Method Therefor. China Patent, CN1062608-C, 2001-02-28(in Chinese)(潘奇汉,王欣平,李洁兰等.一种用于冷阴极材料的铜合金及其制法.中国专利,CN1062608-C, 2001-02-28)15. PAN Qi-Han. The Chinese Journal of Nonferrous Metals,2000, 10(3): 374-377(in Chinese)(潘奇汉.中国有色金属学报,2000, 10(3):374-377)16. Riyopoulos S, Chernin D, Dialetis D. Phys. Plasmas, 1995,2(8): 3194-321317. Riyopoulos S, Chernin D, Dialetis D. IEEE Trans. Electron Devices, 1997, 44(3): 489-49718. Hhn F, Jacob W, Beckmann R et al. Phys. Plasmas, 1997,4(4): 940-944
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ZHAI Ji-Yuan, TANG Chuan-Xiang, ZHENG Shu-Xin and LI Quan-Feng. Multipactor Experiment on a Micro-pulse Electron Gun[J]. Chinese Physics C, 2006, 30(2): 147-150.
ZHAI Ji-Yuan, TANG Chuan-Xiang, ZHENG Shu-Xin and LI Quan-Feng. Multipactor Experiment on a Micro-pulse Electron Gun[J]. Chinese Physics C, 2006, 30(2): 147-150. shu
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Received: 2005-04-22
Revised: 1900-01-01
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Multipactor Experiment on a Micro-pulse Electron Gun

    Corresponding author: ZHAI Ji-Yuan,
  • Department of Engineering Physics, Tsinghua University, Beijing 100084, China

Abstract: The micro-pulse electron gun (MPG) is a new type of cold cathode microwave electron gun that can produce short duration, high current density electron beam. The principle of MPG is multipactor (or multipacting). In this paper, our proof-of-principle experiment on a MPG is presented. One kind of Cu-Al-Mg alloy has been used as the cold cathode. A current with the density up to 100mA/cm2 was observed. The results agree well with the analytical calculation and the computer simulation. The experiment verifies both the analytical theory and the computer code, and prepares the way for the higher current density approach.

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