Influence of the adiabatic-magnetic-field distribution at the entrance of wiggler on the output power and efficiency in a free electron laser

S.C. Zhang

doi:10.1117/12.2298189

14 December 1992 Influence of the adiabatic-magnetic-field distribution at the entrance of wiggler on the output power and efficiency in a free electron laser

S.C. Zhang

Author Affiliations +

Proceedings Volume 1929, 17th International Conference on Infrared and Millimeter Waves; 192920 (1992) https://doi.org/10.1117/12.2298189
Event: 17th International Conference on Infrared and Millimeter Waves, 1992, Pasadena, CA, United States

Abstract

The influence of the adiabatic-magnetic-field distribution at the entrance of wiggler on the output power,gain,and efficiency in a free- electron laser is investigated in teams of nonlinear simulation. The results show that the distribution f(ic,Ã¢â‚¬Å¾z)= (1c,,,z/2aR.,)3 is better and closer to the measured data than both f(ky,z)=sin2(kÃ¢â‚¬Å¾z/41Ã¢â‚¬Â¢1,) and f(lc,,z)= (ky,z/2aNw) 2 Ã¢â‚¬Â¢ It is well known that the initial states of electrons in the interaction region of wiggler in a free-electron laser depend on the adiabatic- magnetic-field distribution. Previously ,a sine-squared adiabatic-magnetic-field distribution is usually used ,and the corresponding three- dimensional wiggler field Ell is

Citation Download Citation

S.C. Zhang "Influence of the adiabatic-magnetic-field distribution at the entrance of wiggler on the output power and efficiency in a free electron laser", Proc. SPIE 1929, 17th International Conference on Infrared and Millimeter Waves, 192920 (14 December 1992); https://doi.org/10.1117/12.2298189

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