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Title: Improvement of nonlinear harmonics in free electron laser with planar wiggler

Abstract

Spontaneous emission of free electron laser with planar wiggler and ion-channel guiding is calculated analytically and possibility of emission at up-shifted wiggler or ion-channel betatron frequency and their harmonics has been found. To investigate the nonlinear odd harmonics, a set of self-consistent nonlinear differential equations that governs the evolution of radiation and electron beam are derived and solved numerically by Runge-Kutta method. Using the simulation code, gain improvement of third harmonic is studied in the range of microwave frequency by applying ion-channel guiding for a cold beam. It is shown that the combination of the ion-channel and a prebunched electron beam increases the amplitude of the third harmonic of the radiation and decreases its saturation length. The relation between the linear and nonlinear harmonics is discussed.

Authors:
;  [1]
  1. Department of Physics, Amirkabir University of Technology, Post code 15875-4413, Tehran (Iran, Islamic Republic of)
Publication Date:
OSTI Identifier:
22072599
Resource Type:
Journal Article
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 19; Journal Issue: 11; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1070-664X
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; BEAM BUNCHING; BETATRONS; COMPUTERIZED SIMULATION; DIFFERENTIAL EQUATIONS; ELECTRON BEAMS; FREE ELECTRON LASERS; HARMONIC GENERATION; IONS; MICROWAVE RADIATION; NONLINEAR PROBLEMS; RUNGE-KUTTA METHOD

Citation Formats

Bazouband, F., and Maraghechi, B. Improvement of nonlinear harmonics in free electron laser with planar wiggler. United States: N. p., 2012. Web. doi:10.1063/1.4766471.
Bazouband, F., & Maraghechi, B. Improvement of nonlinear harmonics in free electron laser with planar wiggler. United States. doi:10.1063/1.4766471.
Bazouband, F., and Maraghechi, B. Thu . "Improvement of nonlinear harmonics in free electron laser with planar wiggler". United States. doi:10.1063/1.4766471.
@article{osti_22072599,
title = {Improvement of nonlinear harmonics in free electron laser with planar wiggler},
author = {Bazouband, F. and Maraghechi, B.},
abstractNote = {Spontaneous emission of free electron laser with planar wiggler and ion-channel guiding is calculated analytically and possibility of emission at up-shifted wiggler or ion-channel betatron frequency and their harmonics has been found. To investigate the nonlinear odd harmonics, a set of self-consistent nonlinear differential equations that governs the evolution of radiation and electron beam are derived and solved numerically by Runge-Kutta method. Using the simulation code, gain improvement of third harmonic is studied in the range of microwave frequency by applying ion-channel guiding for a cold beam. It is shown that the combination of the ion-channel and a prebunched electron beam increases the amplitude of the third harmonic of the radiation and decreases its saturation length. The relation between the linear and nonlinear harmonics is discussed.},
doi = {10.1063/1.4766471},
journal = {Physics of Plasmas},
issn = {1070-664X},
number = 11,
volume = 19,
place = {United States},
year = {2012},
month = {11}
}