Qy. Wang et al., A MULTI-ELECTRON-BEAM CHERENKOV OSCILLATOR OPERATING AT MM WAVELENGTHS, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 349(2-3), 1994, pp. 299-301
A multi-electron-beam Cherenkov maser has the potential of using an el
ectron beam with large spot and an interaction cavity of large transve
rse dimensions with respect to its operation wavelength to generate hi
gh-power microwave radiation. This paper describes a joint experimenta
l research on such a device in which a multi-dielectric cavity of tran
sverse dimensions of 20 mm x 34 mm and a total current of 1036 A at 37
4 kV, in four sheet beams, were employed to generate 9.1 MW microwave
radiation at 36.05 GHz. The conversion efficiency was 2.3%.