LAUSR

We present a numerical model of a plasma maser—an ultra-wideband generator of microwave radiation operating at frequencies varying from 15 to 8 GHz during a single pulse, with output power reaching up to 1 GW. The relativistic high-current electron beam parameters—550 keV energy, 80 ns pulse duration, and 14 kA current—approximate the performance of existing accelerators. In contrast to earlier implementations, which utilized beam currents around 2 kA, our model fully exploits the accelerator's potential. The results demonstrate both the feasibility and implications of operating plasma masers with significantly higher currents, including the impact on radiation frequency dynamics and beam–plasma interactions.