Abstract

A multi-electron-beam Cherenkov maser has the potential of using an electron beam with large spot and an interaction cavity of large transverse dimensions with respect to its operation wavelength to generate high-power microwave radiation. This paper describes a joint experimental research on such a device in which a multi-dielectric cavity of transverse dimensions of 20 mm × 34 mm and a total current of 1036 A at 374 kV, in four sheet beams, were employed to generate 9.1 MW microwave radiation at 36.05 GHz. The conversion efficiency was 2.3%.

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