Title :
Preliminary study on the effects of emitter surface roughness on gyrotron electron beam quality
Author :
Zhang, Juyong ; Illy, Stefan ; Pagonakis, Ioannis Gr ; Jelonnek, John
Author_Institution :
Inst. for Pulsed Power & Microwave Technol. (IHM), Karlsruhe Inst. of Technol. (KIT), Karlsruhe, Germany
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.
Keywords :
electron beams; electron guns; finite difference methods; gyrotrons; ESRAY; MIG; electron beam quality; emitter surface roughness; finite-difference beam optics code; gyrotron; magnetron injection gun; Electric fields; Electron beams; Gyrotrons; Microstructure; Numerical models; Rough surfaces; Surface roughness;
Conference_Titel :
Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), 2013 38th International Conference on
Conference_Location :
Mainz
DOI :
10.1109/IRMMW-THz.2013.6665464
