High-current, short-pulse, RF-synchronized electron gun for the Stanford Linear Accelerator

Conference · Sun Feb 01 04:00:00 EST 1981

OSTI ID:6517989

Sinclair, C K; Miller, R H

For the generation of intense single and multiple bunches of electrons (> 8 nc per bunch) for accelerator studies at SLAC, a high peak current photoemission electron gun has been developed. A gallium arsenide photocathode is illuminated by the optical beam from a frequency doubled, actively mode-locked and Q-switched Nd:YAG laser. The mode-locked optical pulses are of variable, sub-nanosecond width and occur with a spacing of 8.4 nsec, synchronized with the 2856 MHz accelerator rf. The gun is designed to be space charge limited at 15 A and 200 kV, although emission of 60 A was obtained with a 57 kV test structure, corresponding to a current density of 180 A/cm/sup 2/. With the proper choice of laser wavelength, the electron beam may be 40% longitudinally polarized.

• Research Organization: Stanford Linear Accelerator Center, CA (USA)
• DOE Contract Number: AC03-76SF00515
• OSTI ID: 6517989
• Report Number(s): SLAC-PUB-2705; CONF-810314-161
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430301* -- Particle Accelerators-- Ion Sources
ACCELERATORS
AMP BEAM CURRENTS
ARSENIC COMPOUNDS
ARSENIDES
BEAM CURRENTS
CATHODES
CURRENTS
ELECTRODES
ELECTROMAGNETIC RADIATION
ELECTRON GUNS
EMISSION
ENERGY RANGE
GALLIUM ARSENIDES
GALLIUM COMPOUNDS
KEV RANGE
KEV RANGE 100-1000
LASER RADIATION
LINEAR ACCELERATORS
PHOTOCATHODES
PHOTOEMISSION
PNICTIDES
PULSE TECHNIQUES
RADIATIONS
SECONDARY EMISSION
STANFORD 20-GEV LINAC