Measured free-electron laser microbunching using coherent transition radiation

Authors
Tremaine, A Rosenzweig, J Anderson, S Frigola, P Hogan, M Murokh, A Pellegrini, C Nguyen, D Sheffield, R
Citation
A. Tremaine et al., Measured free-electron laser microbunching using coherent transition radiation, NUCL INST A, 429(1-3), 1999, pp. 209-212
Citations number
11
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
209 - 212
Database
ISI
SICI code
0168-9002(19990611)429:1-3<209:MFLMUC>2.0.ZU;2-C
Abstract
The microbunch distribution of an electron beam exiting a SASE free-electro n laser has been measured using the emitted coherent transition radiation ( CTR) produced from a thin aluminum foil placed at the end of the undulator. The wavelength of the coherent transition radiation is shown to be the sam e as the FEL wavelength, and thus a measure of the beam microbunch spacing. Also, the study of the CTR linewidth and angular acceptance of the radiati on captured are shown to be derived from this coherent radiative process. S cattering effects on the forward emitted transition radiation from the elec tron beam traversing an aluminum foil are also considered. (C) 1999 Elsevie r Science B.V. All rights reserved.