An efficient microwave power source: The free-electron laser afterburner

Journal Article · Fri Oct 15 04:00:00 EDT 1993 · Journal of Applied Physics; (United States)

DOI:https://doi.org/10.1063/1.354312· OSTI ID:5980394

Wang, C; Sessler, A M ^[1]

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1. Accelerator and Fusion Research Division, Lawrence Berkeley Laboratory, University of California, Berkeley, California 94720 (United States)

A kind of microwave power source, called a free-electron laser (FEL) afterburner, that consists of a free-electron laser buncher and a slow-wave output structure sharing a magnetic wiggler field with the buncher is proposed. The buncher and the slow-wave structure can operate in either a traveling-wave state or a standing-wave state. In the buncher, the wiggler field together with the radiation field makes an electron beam bunched, and in the slow-wave structure the wiggler field keeps the beam bunched while the bunched beam interacts strongly with the slow-wave structure and thus produces rf power. The bunching process comes from the free-electron laser mechanism, and the generating process of rf power is in a slow-wave structure. A three-dimensional, time-dependent code is used to simulate a particular standing-wave FEL afterburner and it is shown that rf power of up to 1.4 GW at 17.12 GHz, can be obtained from a 1 kA, 5 MeV electron beam with an energy spread of less than 1% and an emittance of less than 0.5[times]10[sup [minus]3] [pi] rad m.

• DOE Contract Number: AC03-76SF00098
• OSTI ID: 5980394
• Journal Information: Journal of Applied Physics; (United States), Journal Name: Journal of Applied Physics; (United States) Vol. 74:8; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
426002* -- Engineering-- Lasers & Masers-- (1990-)
BEAM BUNCHING
BEAM DYNAMICS
BEAMS
COMPUTERIZED SIMULATION
ELECTRICAL EQUIPMENT
ELECTROMAGNETIC RADIATION
ELECTROMAGNETS
ELECTRON BEAMS
EQUIPMENT
FREE ELECTRON LASERS
LASERS
LEPTON BEAMS
MAGNETS
MICROWAVE RADIATION
PARTICLE BEAMS
RADIATION SOURCES
RADIATIONS
SIMULATION
STANDING WAVES
TRAVELLING WAVES
WIGGLER MAGNETS