Two-Dimensional Effects In Gain Modeling For Free-Electron Lasers

Ralph A. Cover; Anup Bhowmik

doi:10.1117/12.934755

7 November 1983 Two-Dimensional Effects In Gain Modeling For Free-Electron Lasers

Ralph A. Cover, Anup Bhowmik

Proceedings Volume 0380, Los Alamos Conf on Optics '83; (1983) https://doi.org/10.1117/12.934755
Event: Los Alamos Conference on Optics, 1983, New Mexico, United States

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.

Citation Download Citation

Ralph A. Cover and Anup Bhowmik "Two-Dimensional Effects In Gain Modeling For Free-Electron Lasers", Proc. SPIE 0380, Los Alamos Conf on Optics '83, (7 November 1983); https://doi.org/10.1117/12.934755

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