Development of powerful spatially extended Cherenkov masers of planar geometry is currently in progress in collaboration between BINP RAS (Novosibirsk) and IAP RAS (Nizhny Novgorod) based on the “ELMI” accelerator 1 MeV / 5–7 kA / 3 µs. To ensure the radiation coherence in conditions of substantial oversize of the interaction space, these projects use a two-dimensional distributed feedback mechanism, which is implemented in 2D-periodic slow-wave structures. The paper presents the results of simulations and optimization aimed at the output power enhancement and increasing the stability of the narrow-band generation regime in the developed relativistic masers. The current stage of their experimental implementation is discussed.
Peskov et al. (Wed,) studied this question.