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It is examined a vircator with a circular cavity placed transversally in a cylindrical waveguide driven by two counter-streaming electron beams. Results from three-dimensional particle-in-cell (PIC) simulations show a conversion efficiency of 32.0%.
We describe the construction and emission tests of an electron gun used to accelerate and inject a hollow electron beam into a cylindrical cavity to produce high-power microwaves at 6.7 GHz, a frequency suitable for communications, medical and industrial applications. In addition to the monotron components, a hard-tube pulser with three tetrodes in parallel is also discussed, able to generate negative...
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