Title :
Simulations of high power gyrotron operation during window Arc
Author :
Schlaich, Andreas ; Gantenbein, Gerd ; Jelonnek, John ; Thumm, Manfred
Author_Institution :
Inst. fur Hochfrequenztech. und Elektron. (IHE), Karlsruhe Inst. of Technol. (KIT), Karlsruhe, Germany
Abstract :
During tests of a megawatt-class 140 GHz gyrotron for the fusion experiment Wendelstein 7-X, a window RF arc was documented with a high-resolution spectral measurement system. The arc event coincided with strong perturbations of the nominal cavity mode TE-28,8 and a final mode switch to a neighbor mode. Simulations using a self-consistent interaction code (SELFT) have reproduced the main features of the event and provide additional information on the development of the modes during the window RF arc.
Keywords :
arcs (electric); gyrotrons; plasma confinement; frequency 140 GHz; fusion experiment Wendelstein 7-X; high power gyrotron; high-resolution spectral measurement system; megawatt class gyrotron; nominal cavity mode; self-consistent interaction code; window RF arc; window arc; Cavity resonators; Frequency measurement; Gyrotrons; Load modeling; Radio frequency; Reflection; Switches;
Conference_Titel :
Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), 2013 38th International Conference on
Conference_Location :
Mainz
DOI :
10.1109/IRMMW-THz.2013.6665433
