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Saturation-power enhancement of a free-electron laser amplifier through parameters adjustment

Published online by Cambridge University Press:  24 February 2015

Yu-Pin Ji ,
Y.-G. Xu ,
S.-J. Wang ,
J.-Y. Xu ,
X.-X. Liu  and
S.-C. Zhang
Yu-Pin Ji
Affiliation:
School of Physics and Chemistry, Xihua University, Chengdu SC610039, P. R. of China
Y.-G. Xu
Affiliation:
School of Physics and Chemistry, Xihua University, Chengdu SC610039, P. R. of China
S.-J. Wang
Affiliation:
School of Physics and Chemistry, Xihua University, Chengdu SC610039, P. R. of China
J.-Y. Xu
Affiliation:
School of Physics and Chemistry, Xihua University, Chengdu SC610039, P. R. of China
X.-X. Liu
Affiliation:
School of Physics and Chemistry, Xihua University, Chengdu SC610039, P. R. of China
S.-C. Zhang*
Affiliation:
School of Physics and Chemistry, Xihua University, Chengdu SC610039, P. R. of China Institute of Photoelectronics, Southwest Jiaotong University, Chengdu SC610031, P. R. of China
*
†Email address for correspondence: [email protected]
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Abstract

Saturation-power enhancement of a free-electron laser (FEL) amplifier by using tapered wiggler amplitude is based on the postponement of the saturation length of the uniform wiggler. In this paper, we qualitatively and quantitatively demonstrate that the saturation-power enhancement can be approached by means of the parameters adjustment, which is comparable to that by using a tapered wiggler. Compared to the method by tapering the wiggler amplitude, the method of parameters adjustment substantially shortens the saturation length, which is favorable to cutting down the manufacture and operation costs of the device.

Type
Research Article
Information
Journal of Plasma Physics , Volume 81 , Issue 3 , June 2015 , 905810317
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Copyright
Copyright © Cambridge University Press 2015 

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References

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