https://doi.org/10.1051/epjconf/201715702013
Recent progress on improving ICRF coupling and reducing RF-specific impurities in ASDEX Upgrade
1 Max-Planck-Institut für Plasmaphysik, Garching, Germany
2 Applied Physics Department, University of Ghent, Ghent, Belgium
3 Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, P. R. China
4 Instituto de Plasmas e Fusão Nuclear, IST, Universidade de Lisboa, Portugal
5 CEA, IRFM, F-13108 Saint-Paul-Lez-Durance, France
6 Laboratory for Plasma Physics, ERM/KMS, Brussels, Belgium
7 Max-Planck-Institut für Plasmaphysik, Greifswald, Germany
8 CCFE, Culham Science Centre, Abingdon, UK
9 Politecnico di Torino, Torino, Italy
10 ENEA, Fusion Physics Division, Frascati, Italy
* Corresponding author: wei.zhang@ipp.mpg.de
Published online: 23 October 2017
The recent scientific research on ASDEX Upgrade (AUG) has greatly advanced solutions to two issues of Radio Frequency (RF) heating in the Ion Cyclotron Range of Frequencies (ICRF): (a) the coupling of ICRF power to the plasma is significantly improved by density tailoring with local gas puffing; (b) the release of RF-specific impurities is significantly reduced by minimizing the RF near field with 3-strap antennas. This paper summarizes the applied methods and reviews the associated achievements.
© The authors, published by EDP Sciences, 2017
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
