First operation of a photocathode radio frequency gun injector at high duty factor

Journal Article · Mon Oct 11 00:00:00 EDT 1993 · Applied Physics Letters; (United States)

DOI:https://doi.org/10.1063/1.110583· OSTI ID:5987737

Dowell, D H; Davis, K J; Friddell, K D; Tyson, E L; Lancaster, C A; Milliman, L; Rodenburg, R E; Aas, T; Bemes, M; Bethel, S Z; Johnson, P E; Murphy, K; Whelen, C ^[1]; Busch, G E; Remelius, D K ^[2]

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1. Boeing Defense Space Group, Seattle, Washington 98124-2499 (United States)
2. Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)

Tests of the electron beam injector for the Boeing/Los Alamos Average Power Laser Experiment have demonstrated first time operation of a photocathode radio frequency gun accelerator at 25% duty factor, exceeding previous photocathode operating parameters by three orders of magnitude. The macropulse format was 30 Hz and 8.3 ms with a micropulse frequency of 27 MHz. Average beam currents of up to 32 mA have been accelerated to 5 MeV for an average beam power of 160 kW. The macropulse peak current was 128 mA. The 32 mA average beam current exceeds previous cathode performance by a factor of 1000. Emittance measurements demonstrate excellent electron beam quality.

• OSTI ID: 5987737
• Journal Information: Applied Physics Letters; (United States), Vol. 63:15; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
Ta
FREE ELECTRON LASERS
ELECTRON BEAMS
ACCELERATION
ELECTRON GUNS
ELECTRON SOURCES
PHOTOCATHODES
PULSES
QUANTUM EFFICIENCY
RF SYSTEMS
BEAMS
CATHODES
EFFICIENCY
ELECTRODES
LASERS
LEPTON BEAMS
PARTICLE BEAMS
PARTICLE SOURCES
RADIATION SOURCES
426002* - Engineering- Lasers & Masers- (1990-)
661220 - Particle Beam Production & Handling
Targets- (1992-)