Experimental studies of microwave amplification in the ion-focused regime

Journal Article · Mon Feb 01 00:00:00 EST 1993 · IEEE Transactions on Plasma Science (Institute of Electrical and Electronics Engineers); (United States)

DOI:https://doi.org/10.1109/27.221112· OSTI ID:6386408

Whittum, D H; Ebihara, K; Hiramatsu, S; Kishiro, J; Ozaki, T; Takayama, K ^[1]

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1. National Lab. for High Energy Physics, Ibaraki (Japan)

Studies are reported of microwave amplification with an ion-focused electron beam drawn from an induction injector. A free-electron laser (FEL) operating at 9.4 GHz and employing ion-focusing within the interaction region has achieved power in excess of 30 MW at 9.4 GHz, with a beam energy of 0.8 MeV and current of 0.7 kA. Peak gain is 20 dB/m, with no saturation after 15 wiggler periods. Also reported are the first evolution and detuning data for an ion-channel laser/maser (ICL). Two shortcomings of the prematurely halted ICL studies are noted: poor frequency discrimination and a large axial plasma gradient. Prospects for operation with an upgraded 1.6 MeV accelerator are discussed.

• OSTI ID: 6386408
• Journal Information: IEEE Transactions on Plasma Science (Institute of Electrical and Electronics Engineers); (United States), Vol. 21:1; ISSN 0093-3813
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
43 PARTICLE ACCELERATORS
FREE ELECTRON LASERS
BEAM TRANSPORT
LINEAR COLLIDERS
MICROWAVE EQUIPMENT
MICROWAVE RADIATION
AMPLIFICATION
ACCELERATORS
ELECTRON BEAMS
FOCUSING
LASER-PRODUCED PLASMA
OPERATION
PERFORMANCE
POWER
POWER SUPPLIES
TUNING
WIGGLER MAGNETS
BEAMS
ELECTRICAL EQUIPMENT
ELECTROMAGNETIC RADIATION
ELECTROMAGNETS
ELECTRONIC EQUIPMENT
EQUIPMENT
LASERS
LEPTON BEAMS
LINEAR ACCELERATORS
MAGNETS
PARTICLE BEAMS
PLASMA
RADIATIONS
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