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: firstname.lastname@example.org
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
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