Abstract
The effect of the emitter surface roughness on the quality of an electron beam emitted by a gyrotron magnetron injection gun (MIG) has been studied. Several different shapes of microstructures (imperfections) have been modeled on the emitter surface. A modified version of the two-dimensional, finite-difference beam optics code ESRAY has been used for the numerical simulations. Results for the different shapes and different sizes of the microstructures are shown.
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