Improvement Of The Power Handling Capability Of The Upgraded Multi-Frequency ECRH System At ASDEX Upgrade
Paper (FACIL 3)Tue, 10 Nov 2020 06:30pm to 06:45pm
Room: Seneca
8 gyrotrons are in routine operation in the Electron
Cyclotron Resonance Heating (ECRH) system at the ASDEX
Upgrade tokamak. 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. The transmission lines are
operating in air and transmission at maximum power levels was
limited by arcing in the past. Several measures led to a significant
improvement
Presenter: Anonymous
Authors: Wagner, Dietmar; Stober, Jörg; Kircher, Michael; Leuterer, Fritz; Monaco, Francesco; Münich, Max; Schubert, Martin; Zohm, Hartmut; Gantenbein, Gerd; Jelonnek, John; Thumm, Manfred; Meier, Andreas; Scherer, Theo; Strauss, Dirk; Kasparek, Walter; Lechte, Carsten; Plaum, Burkhard; Zach, Alexander; Litvak, Alexander; Denisov, Gregory; Chirkov, Alexey; Malygin, Vladimir; Popov, Leonid; Nichiporenko, Vadim; Myasnikov, Vadim; Tai, Evgeny; Solyanova, Elena
GYCOM Ltd., Institute of Applied Physics, KIT Karlsruhe, Max-Planck-Institut fuer Plasmaphysik, University of Stuttgart