Electron beam matching and its influence on the performance of high-gain free-electron lasers

Authors
Freund, HP O'Shea, PG
Citation
Hp. Freund et Pg. O'Shea, Electron beam matching and its influence on the performance of high-gain free-electron lasers, NUCL INST A, 429(1-3), 1999, pp. 219-224
Citations number
20
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences","Instrumentation & Measurement
Journal title
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
ISSN journal
01689002 → ACNP
Volume
429
Issue
1-3
Year of publication
1999
Pages
219 - 224
Database
ISI
SICI code
0168-9002(19990611)429:1-3<219:EBMAII>2.0.ZU;2-L
Abstract
We consider the influence of electron beam on the performance of high-gain FELs. We test this hypothesis for a SASE configuration using a 3-D multimod e simulation. The gain length predicted for a matched beam agrees well with analytic theory, and the simulation indicates that while the gain length i s optimized for a matched beam the saturated power may not be optimized. In previous work we have considered a flat-top beam model while we also consi der a Gaussian beam model, and conclude the two are in substantial agreemen t. (C) 1999 Elsevier Science B.V. All rights reserved.