CHINESE JOURNAL OF COMPUTATIONAL PHYSICS ›› 1994, Vol. 11 ›› Issue (3): 262-268.

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ANALYSIS OF THE BEAM EMITTANCE ON SG-1 FEL DEVICE

Yang Zhenhua, Wu Yupu   

  1. Beijing institute of Applied Physics and Computational Mathematics, Beijing 100088
  • Received:1992-10-03 Revised:1993-09-08 Online:1994-09-25 Published:1994-09-25

Abstract: The theoretical analyses of the beam emittance on SG-1 FEL device have been presented in this paper. The measured beam emittance is about (0.4-0.5) rad·cm. From the experimental beam quantity and numerical simulation resalt, it appears that the quantity of beam current is good enough to abandom the 9-m-long beam modulated system, while substituting with 2-m-long drifting focusing regiou.

Key words: free electron laser, emittance, wiggler

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