G. Baranov et al., THE UCLA IR FEL PROJECT, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 331(1-3), 1993, pp. 228-231
A 10.6 mum free electron laser (FEL) operating in the high gain regime
is under construction at UCLA. FEL physics significant to future shor
t wavelength operation will be emphasized including optical guiding, s
uperradiance, saturation and self-amplified spontaneous emission (SASE
). A 5 MeV rf photocathode gun illuminated by a UV laser will supply a
high brightness electron beam which will be injected into a plane wav
e transformer (PWT) linac for acceleration to 20 MeV. Recent measureme
nts of the gun emittance as well as quantum efficiency are presented.
The undulator is of a modified hybrid design producing approximately 7
.5 kG peak field on axis with 5 mm gap spacing and 1.5 cm pole period.
Simulation results which include three-dimensional effects are furnis
hed. The present status and future plans of the project are summarized
.