Results from the SLAC lasertron

Technical Report · Fri Jan 01 04:00:00 EST 1988

OSTI ID:5020756

Welch, J J

Rf power at 2856 MHz has been obtained from the SLAC proof of principle lasertron. Experiments show that the electron beam is well bunched when the laser beam is well dispersed, the voltage high, and the current density low. However, if any of the criteria is not met, space charge forces can cause significant debunching. The maximum beam power to rf power conversion efficiency was 12.3%, and the maximum rf power was 2 kW. Both maxima were obtained under the same operating conditions, at a beam voltage of 75 kV. When the maximum efficiency was obtained, it was limited by the poor match of the beam impedance to the cavity impedance. The rf measurements, the technical problems that limit available current and voltage, and the theory of the coupling between the beam and the cavity are discussed. 6 refs., 16 figs.

• Research Organization: Stanford Linear Accelerator Center, Menlo Park, CA (USA)
• DOE Contract Number: AC03-76SF00515
• OSTI ID: 5020756
• Report Number(s): SLAC-PUB-4517; ON: DE88007816
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
BEAM BUNCHING
BEAM DYNAMICS
BEAMS
CATHODES
DATA
EFFICIENCY
ELECTRODES
ELECTRON BEAMS
ELECTRON TUBES
ELECTRONIC EQUIPMENT
EQUIPMENT
EXPERIMENTAL DATA
INFORMATION
LASERTRONS
LEPTON BEAMS
MICROWAVE EQUIPMENT
MICROWAVE TUBES
NUMERICAL DATA
PARTICLE BEAMS
PERFORMANCE TESTING
PHOTOGRAPHY
QUANTUM EFFICIENCY
RF SYSTEMS
SPACE CHARGE
STREAK PHOTOGRAPHY
TESTING
WAVE FORMS