中国物理B ›› 1996, Vol. 5 ›› Issue (1): 31-38.doi: 10.1088/1004-423X/5/1/005

• CLASSICAL AREAS OF PHENOMENOLOGY • 上一篇    下一篇

PHASE SPACE ANALYSIS OF FREE ELECTRON LASER EFFICIENCY REDUCTION DUE TO RANDOM FIELD ERROR

胡素兴, 傅恩生   

  1. Shanghai Institute of Optics and Fine Mechanics, Academia Sinica, P.O. Box 800-216, Shanghai 201800, China
  • 收稿日期:1994-11-08 出版日期:1996-01-20 发布日期:1996-01-20

PHASE SPACE ANALYSIS OF FREE ELECTRON LASER EFFICIENCY REDUCTION DUE TO RANDOM FIELD ERROR

HU SU-XING (胡素兴), FU EN-SHENG (傅恩生)   

  1. Shanghai Institute of Optics and Fine Mechanics, Academia Sinica, P.O. Box 800-216, Shanghai 201800, China
  • Received:1994-11-08 Online:1996-01-20 Published:1996-01-20

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摘要： Considering the random field error of the wiggler, we deduce the equation of phase motion and calculate the phase volume of interaction in a real helical wiggler. The result was compared with the case of the ideal wiggler field. We analyze how the random field error causes the efficiency of free electron laser (FEL) to reduce, and simulate the FEL efficiency reduction effect according to the mechanisms which we present in this paper. The consequence agrees excellently with the experiment.

Abstract: Considering the random field error of the wiggler, we deduce the equation of phase motion and calculate the phase volume of interaction in a real helical wiggler. The result was compared with the case of the ideal wiggler field. We analyze how the random field error causes the efficiency of free electron laser (FEL) to reduce, and simulate the FEL efficiency reduction effect according to the mechanisms which we present in this paper. The consequence agrees excellently with the experiment.

中图分类号:  (Free-electron lasers)

  • 41.60.Cr
41.75.Ht (Relativistic electron and positron beams)