Power and bandwidth studies for W-band free-electron masers

Authors
Freund, HP Jackson, RH Danly, BG Levush, B
Citation
Hp. Freund et al., Power and bandwidth studies for W-band free-electron masers, NUCL INST A, 429(1-3), 1999, pp. 70-75
Citations number
18
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
70 - 75
Database
ISI
SICI code
0168-9002(19990611)429:1-3<70:PABSFW>2.0.ZU;2-N
Abstract
Power and bandwidth studies for a high power W-band (approximate to 94 GHz) FEM amplifier is presented for a helical wiggler/cylindrical waveguide con figuration using 3D ARACHNE simulation code (H.P. Freund, T.M. Antonsen, Jr ., Principles of Free-electron Lasers. 2nd edn., Chapman & Hall, London, 19 96, Ch. 5). Using a 300 kV/20 A electron beam with a normalized emittance o f 95 mm mrad, a 600 G wiggler field with a 0.88 cm period, and a strong gui de field of 20 kG, efficiencies of greater than 8% are possible with a FWHM bandwidth of 4.5 GHz. (C) 1999 Elsevier Science B.V. All rights reserved.