GAIN MEASUREMENTS ON A WAVE-GUIDE FEL AMPLIFIER WITH PRE-BUNCHED ELECTRON-BEAM

Authors
DEARDEN G MAYHEW SE LUCAS J STUART RA HARTLEY JR SHAW A ALSHAMMAA A
Citation
G. Dearden et al., GAIN MEASUREMENTS ON A WAVE-GUIDE FEL AMPLIFIER WITH PRE-BUNCHED ELECTRON-BEAM, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 375(1-3), 1996, pp. 183-185
Citations number
5
Categorie Soggetti
Nuclear Sciences & Tecnology","Physics, Particles & Fields","Instument & Instrumentation",Spectroscopy
Journal title
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment → ACNP
ISSN journal
01689002
Volume
375
Issue
1-3
Year of publication
1996
Pages
183 - 185
Database
ISI
SICI code
0168-9002(1996)375:1-3<183:GMOAWF>2.0.ZU;2-5
Abstract
A recently proposed theory suggests that a synchronous, pre-bunched el ectron beam should amplify radiation with a power gain which is invers ely proportional to the square root of the input power. We have measur ed the power gain experimentally for a waveguide FEL system using a 1 mA nominal low-voltage (55.5 kV) electron beam, pre-bunched in a waveg uide cavity. The gain in the wiggler has been observed as a function o f the beam energy, beam current and wiggler waveguide input power; and good agreement with theory was obtained.