中国物理B ›› 2006, Vol. 15 ›› Issue (2): 319-323.doi: 10.1088/1009-1963/15/2/015

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Physical design and cooling test of C-band standing wave accelerating tube

柏伟, 许州, 金晓, 黎明   

  1. Institute of Applied Electronics, China Academy of Engineering Physics, Mianyang 621900, China
  • 收稿日期:2005-03-18 修回日期:2005-10-12 出版日期:2006-02-20 发布日期:2006-02-20
  • 基金资助:
    Project supported by the Technology Research of Picosecond Electron Beam Source (Grant No 42105).

Physical design and cooling test of C-band standing wave accelerating tube

Bai Wei (柏伟), Xu Zhou (许州), Jin Xiao (金晓), Li Ming (黎明)   

  1. Institute of Applied Electronics, China Academy of Engineering Physics, Mianyang 621900, China
  • Received:2005-03-18 Revised:2005-10-12 Online:2006-02-20 Published:2006-02-20
  • Supported by:
    Project supported by the Technology Research of Picosecond Electron Beam Source (Grant No 42105).

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摘要： The physical design and cooling test of a C-band 2MeV standing wave (SW) accelerating tube are described in this paper. The designed accelerating structure consists of 3-cell buncher and 4-cell accelerating section with a total length of about 163mm，excited with 1MW magnetron. Dynamic simulation presents that about 150mA beam pulse current and 30{\%} capture efficiency can be achieved. By means of nonlinear Gauss fit on electron transverse distribution, the diameter of beam spot FWHM (full width at half maximum of density distribution) is about 0.55mm. Cooling test results of the accelerating tube show that frequencies of cavities are tuned to 5527MHz and the field distribution of bunching section is about 3:9:10.

关键词: C-band, standing wave, accelerating tube, space charge effect

Abstract: The physical design and cooling test of a C-band 2MeV standing wave (SW) accelerating tube are described in this paper. The designed accelerating structure consists of 3-cell buncher and 4-cell accelerating section with a total length of about 163mm，excited with 1MW magnetron. Dynamic simulation presents that about 150mA beam pulse current and 30% capture efficiency can be achieved. By means of nonlinear Gauss fit on electron transverse distribution, the diameter of beam spot FWHM (full width at half maximum of density distribution) is about 0.55mm. Cooling test results of the accelerating tube show that frequencies of cavities are tuned to 5527MHz and the field distribution of bunching section is about 3:9:10.

Key words: C-band, standing wave, accelerating tube, space charge effect

中图分类号:  (Accelerators)

  • 29.20.-c
29.27.Bd (Beam dynamics; collective effects and instabilities) 29.27.Eg (Beam handling; beam transport) 29.27.Ac (Beam injection and extraction) 41.60.Cr (Free-electron lasers)