Jl. Rullier et al., STRONG-COUPLING OPERATION OF A FEL AMPLIFIER WITH AN AXIAL MAGNETIC-FIELD, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 358(1-3), 1995, pp. 118-121
This paper presents the results of a FEL experiment at 35 GHz, using a
highly relativistic electron beam (T = 1.75 MeV). The electron pulse
length is 30 ns FWHM with a peak current of 400 A. The FEL is designed
to operate in the high-gain Compton regime, with a negative coupling
parameter (Phi < 0) leading to a stong growth rate. More than 50 MW of
RF power in the TE11 mode (43 dB gain) has been obtained with good re
producibility. The experimental results are in good agreement with pre
dictions made using the 3D stationary simulation code SOLITUDE.