학술논문
Completion of the 8 MW Multi-Frequency ECRH System at ASDEX Upgrade
Document Type
Conference
Author
Wagner, D.; Stober, J.; Kircher, M.; Leuterer, F.; Monaco, F.; Munich, M.; Schubert, M.; Zohm, H.; Gantenbein, G.; Jelonnek, J.; Thumm, M.; Meier, A.; Scherer, T.; Strauss, D.; Kasparek, W.; Lechte, C.; Plaum, B.; Zach, A.; Litvak, A.G.; Denisov, G.G.; Chirkov, A.; Malygin, V.; Popov, L.G.; Nichiporenko, V.O.; Myasnikov, V.E.; Tai, E.M.; Solyanova, E.A.
Source
2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), 2019 44th International Conference on. :1-2 Sep, 2019
Subject
Language
ISSN
2162-2035
Abstract
Over the last 15 years, the Electron Cyclotron Resonance Heating (ECRH) system at the ASDEX Upgrade tokamak has been upgraded from a 2 MW, 2 s, 140 GHz system to an 8 MW, 10 s, dual frequency system (105/140 GHz). Eight gyrotrons were in routine operation during the current experimental campaign. All gyrotrons are step-tunable operating at 105 and 140 GHz with a maximum output power of about 1 MW and 10 s pulse length. The system includes 8 transmission lines, mainly consisting of oversized corrugated waveguides (I.D. = 87 mm) with overall lengths between 50 and 70 meters including quasi-optical sections at both ends. Further improvements of the transmission lines with respect to power handling and reliability are underway.