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Three-dimensional and nonlinear analysis of efficiency enhancement in the E × B drifting electron laser with a prebunched electron beam and a planar wiggler

Published online by Cambridge University Press:  12 April 2013

B. MARAGHECHI ,
M. JOKAR ,
F. JAFARI BAHMAN  and
A. NAEIMABADI
B. MARAGHECHI
Affiliation:
Department of Physics, Amirkabir University of Technology, P.O. Box 15875-4413, Tehran, Iran ([email protected])
M. JOKAR
Affiliation:
Department of Physics, Amirkabir University of Technology, P.O. Box 15875-4413, Tehran, Iran ([email protected])
F. JAFARI BAHMAN
Affiliation:
Department of Physics, Amirkabir University of Technology, P.O. Box 15875-4413, Tehran, Iran ([email protected])
A. NAEIMABADI
Affiliation:
Department of Physics, Amirkabir University of Technology, P.O. Box 15875-4413, Tehran, Iran ([email protected])
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Abstract

A nonlinear simulation of the E × B drifting electron laser (DEL) and the free-electron laser (FEL), in three dimensions, is presented for a prebunched electron beam to study efficiency enhancement. For the planar wiggler with flat pole faces, prebunching considerably shortens the saturation length, which favors the DEL compared to the FEL. Operation of the DEL with the planar wiggler with parabolic pole faces was not found to be possible due to the modulation of the E × B drift by the wiggler. However, simulation results of the FEL with this type of wiggler are reported.

Type
Papers
Information
Journal of Plasma Physics , Volume 79 , Issue 5 , October 2013 , pp. 739 - 749
Copyright
Copyright © Cambridge University Press 2013 

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