K. Takayama et al., EXPERIMENTAL RESULTS ON THE 1.5-MEV ION-CHANNEL GUIDED X-BAND FREE-ELECTRON LASER, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 358(1-3), 1995, pp. 122-125
Experiments on the ion-channel guided X-band free-electron laser ampli
fier (IXFEL) generated peak microwave power exceeding 100 MW at 9.4 GH
z with a gain of 21 dB/m. Saturation in the evolution curve has been a
chieved and a frequency spread of 0.9% was observed. The amplified mic
rowaves were separated from the driving beam line and extracted withou
t breakdown.