中国物理B ›› 2006, Vol. 15 ›› Issue (2): 315-318.doi: 10.1088/1009-1963/15/2/014

• NUCLEAR PHYSICS • 上一篇    下一篇

A method to measure the nonlinear force caused emittance growth in a RF photoinjector

李正红, 杨振萍   

  1. Science College, South-West University of Science and Technology,Mianyang, 621021, China
  • 收稿日期:2005-07-15 修回日期:2005-08-02 出版日期:2006-02-20 发布日期:2006-02-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No 10347009).

A method to measure the nonlinear force caused emittance growth in a RF photoinjector

Li Zheng-Hong (李正红), Yang Zhen-Ping (杨振萍)   

  1. Science College, South-West University of Science and Technology,Mianyang, 621021, China
  • Received:2005-07-15 Revised:2005-08-02 Online:2006-02-20 Published:2006-02-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No 10347009).

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摘要： Based on the multi-slit method, a new method is introduced to measure the non linear force caused emittance growth in a RF photoinjector. It is possible to reconstruct the phase space of a beam under some conditions by the multi-slit method. Based on the reconstructed phase space, besides the emittance, the emittance growth from the distortion of the phase space can also be measured. The emittance growth results from the effects of nonlinear force acting on electron, which is very important for the high quality beam in a RF photoinjector.

Abstract: Based on the multi-slit method, a new method is introduced to measure the non linear force caused emittance growth in a RF photoinjector. It is possible to reconstruct the phase space of a beam under some conditions by the multi-slit method. Based on the reconstructed phase space, besides the emittance, the emittance growth from the distortion of the phase space can also be measured. The emittance growth results from the effects of nonlinear force acting on electron, which is very important for the high quality beam in a RF photoinjector.

Key words: thermal emittance, RF photoinjector, FEL (free electron laser), multi-slit method

中图分类号:  (Free-electron lasers)

  • 41.60.Cr
29.27.Ac (Beam injection and extraction) 29.27.Eg (Beam handling; beam transport)