Measurement of electron-beam bunch length and emittance using shot-noise-driven fluctuations in incoherent radiation

Authors
Catravas, P Leemans, WP Wurtele, JS Zolotorev, MS Babzien, M Ben-Zvi, I Segalov, Z Wang, XJ Yakimenko, V
Citation
P. Catravas et al., Measurement of electron-beam bunch length and emittance using shot-noise-driven fluctuations in incoherent radiation, PHYS REV L, 82(26), 1999, pp. 5261-5264
Citations number
21
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
00319007 → ACNP
Volume
82
Issue
26
Year of publication
1999
Pages
5261 - 5264
Database
ISI
SICI code
0031-9007(19990628)82:26<5261:MOEBLA>2.0.ZU;2-B
Abstract
Longitudinal and transverse phase space information has been obtained from a statistical analysis of fluctuations in the radiation spectrum of an elec tron bunch. Uncorrelated shot noise fluctuations in longitudinal beam densi ty result in incoherent radiation with a spectrum that consists of spikes, with width inversely proportional to the bunch length. Measurements were pe rformed at lambda = 620 nm on a 1-5 ps long, 44 MeV bunch propagating throu gh a wiggler. Bunch length and emittance obtained with this single shot tec hnique agree with independent measurements.