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Proceedings Paper

Simulation of free-electron lasers in the presence of measured magnetic field errors of the undulator
Author(s): William P. Marable; Cha-Mei Tang; Eric Esarey
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Paper Abstract

The intrinsic errors of actual magnetic undulators yield a degraded performance of the free electron laser (FEL) with respect to that obtained from ideal models of the magnetic undulator. The impact of these errors have been theoretically and computationally investigated for simple error models, in which the field errors have uniform or sinusoidal spatial extent and amplitudes which are statistically independent for each magnet pole piece. These simple models have been recently extended to include more complicated spatial structures and statistically correlated field errors in the analysis of the FEL performance. The measured data of the National Institute of Standards and Technology (NIST) undulator will be fit by the more advanced models. We present numerical simulation of the FEL in the presence of measured field errors.

Paper Details

Date Published: 1 December 1991
PDF: 7 pages
Proc. SPIE 1552, Short-Wavelength Radiation Sources, (1 December 1991); doi: 10.1117/12.50595
Show Author Affiliations
William P. Marable, Hampton Univ. (United States)
Cha-Mei Tang, Naval Research Lab. (United States)
Eric Esarey, Naval Research Lab. (United States)

Published in SPIE Proceedings Vol. 1552:
Short-Wavelength Radiation Sources
Phillip Sprangle, Editor(s)

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