Title :
Interaction circuit design and RF behavior of a 236 GHz gyrotron for DEMO
Author :
Kalaria, P. ; Avramidis, K.A. ; Franck, J. ; Gantenbein, G. ; Illy, S. ; Pagonakis, I. Gr ; Thumm, M. ; Jelonnek, J.
Author_Institution :
Inst. for Pulsed Power & Microwave Technol. (IHM, Karlsruhe Inst. of Technol. (KIT), Karlsruhe, Germany
Abstract :
The Demonstration Fusion Power Reactor (DEMO) to follow ITER by 2050 demands high frequency (>230 GHz), high power (in the range from 1 MW to 2 MW) gyrotrons as RF sources for electron cyclotron resonance heating and current drive (ECRH&CD). In the frame of the EUROfusion programme at KIT, the designs of conventional-cavity type and coaxial-cavity type DEMO-compatible gyrotrons are under investigation. In this presentation, the physical design of the interaction circuit of a 236 GHz conventional cavity gyrotron and its RF behavior are presented. The simulation results show a stable single mode RF output power without serious mode competition.
Keywords :
fusion reactor design; gyrotrons; millimetre wave generation; millimetre wave tubes; plasma radiofrequency heating; DEMO; DEMO-compatible gyrotrons; ECRH&CD systems; EUROfusion programme; ITER; RF behavior; coaxial-cavity type; conventional cavity gyrotron; conventional-cavity type; demonstration fusion power reactor; electron cyclotron resonance heating and current drive; frequency 236 GHz; interaction circuit design; power 1 MW to 2 MW; Cavity resonators; Cyclotrons; Electron beams; Gyrotrons; Loading; Power generation; Radio frequency; DEMO; RF behavior; cavity design; gyrotron; multi-mode calculations; plasma heating; tokamak;
Conference_Titel :
Microwave Conference (GeMiC), 2015 German
Conference_Location :
Nuremberg
DOI :
10.1109/GEMIC.2015.7107804
