Title :
Multi-frequency ECRH system at ASDEX upgrade
Author :
Wagner, D. ; Stober, J. ; Bäumel, S. ; Franke, T. ; Leuterer, F. ; Poli, E. ; Monaco, F. ; Munich, M. ; Schütz, H. ; Zohm, H. ; Thumm, M. ; Scherer, T. ; Meier, A. ; Gantenbein, G. ; Flamm, J. ; Kasparek, W. ; Lechte, C. ; Hohnle, H. ; Litvak, A.G. ; Deni
Author_Institution :
EURATOM-IPP, Max-Planck-Inst. fur Plasmaphysik, Garching, Germany
Abstract :
A new ECRH system is currently under construction at the ASDEX Upgrade tokamak. It employs for the first time depressed collector gyrotrons, step-tunable in the range 105-140 GHz. In its final stage it will consist of 4 gyrotrons with a total output power of 4 MW and a pulse length of 10 s. In this paper we describe recent extensions of the system and some experimental results.
Keywords :
Tokamak devices; gyrotrons; millimetre wave tubes; plasma radiofrequency heating; plasma toroidal confinement; ASDEX upgrade tokamak; depressed collector gyrotrons; electron cyclotron resonance heating system; frequency 105 GHz to 140 GHz; multifrequency ECRH system; power 4 MW; step-tunable gyrotrons; Cyclotrons; Gyrotrons; Heating; Plasma materials processing; Power generation; Probes; Radiation detectors; Tokamaks; Tungsten; Variable speed drives;
Conference_Titel :
Infrared, Millimeter, and Terahertz Waves, 2009. IRMMW-THz 2009. 34th International Conference on
Conference_Location :
Busan
Print_ISBN :
978-1-4244-5416-7
Electronic_ISBN :
978-1-4244-5417-4
DOI :
10.1109/ICIMW.2009.5324733
