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Proceedings Paper

Two-Dimensional Effects In Gain Modeling For Free-Electron Lasers
Author(s): Ralph A. Cover; Anup Bhowmik
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Paper Abstract

The Kroll-Morton-Rosenbluth description of FEL amplifiers is utilized to model gain in Rocketdyne's numerical wave-optics analysis of FEL resonators. The tapered-wiggler amplifier model includes the effects of off-axis variations in the initial electron-beam density and azimuthally dependent effects of betatron oscillations on electron orbits. Off-axis variations in the linearly polarized wiggler magnetic field are also included. When run in the amplifier mode it incorporates the standard analysis of Gaussian beam propagation. This numerical model is an elaboration of the one-dimensional computer program FELMOV written by R. K. Cooper of Los Alamos. Computations showing the importance of the above physical effects and sensitivity studies indicating the degree of refinement needed to adequately treat them will be presented.

Paper Details

Date Published: 7 November 1983
PDF: 7 pages
Proc. SPIE 0380, Los Alamos Conf on Optics '83, (7 November 1983); doi: 10.1117/12.934755
Show Author Affiliations
Ralph A. Cover, Rockwell International (United States)
Anup Bhowmik, Rockwell International (United States)


Published in SPIE Proceedings Vol. 0380:
Los Alamos Conf on Optics '83
Robert S. McDowell; Susanne C. Stotlar, Editor(s)

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