First Experiments on a Compact MILO Device

In this paper, we present a compact MILO device working at 2.44 GHz. Fast electrical sensors such as I-dot and D-dot probes are installed along the tube in order to characterize at any time the current emitted from the cylindrical velvet cathode and the high voltage delivered by the Marx generator. Cold tests (without electrons) allow predicting the operating frequency and lead to a precise characterization of the periodic slow wave structure (SWS). First results presented here show the physical limitations of the high voltage generator and prepare future experiments under magnetically insulated conditions