Recent progress on improving ICRF coupling and reducing RF-specific impurities in ASDEX Upgrade

Wei Zhang; Volodymyr Bobkov; Jean-Marie Noterdaeme; Wouter Tierens; Diogo Aguiam; Roberto Bilato; David Coster; Laurent Colas; Kristel Crombé; Helmut Fuenfgelder; Helmut Faugel; Yuhe Feng; Jonathan Jacquot; Philippe Jacquet; Arne Kallenbach; Ana Kostic; Tilmann Lunt; Riccardo Maggiora; Roman Ochoukov; Antonio Silva; Guillermo Suárez; Angelo A. Tuccilo; Onofrio Tudisco; Mariia Usoltceva; Dirk Van Eester; Yongsheng Wang; Qingxi Yang

doi:10.1051/epjconf/201715702013

All issues

Volume 157 (2017)

EPJ Web Conf., 157 (2017) 02013

Abstract

Open Access

Issue		EPJ Web Conf. Volume 157, 2017 22 Topical Conference on Radio-Frequency Power in Plasmas


Article Number		02013
Number of page(s)		6
Section		Invited Papers
DOI		https://doi.org/10.1051/epjconf/201715702013
Published online		23 October 2017

EPJ Web of Conferences 157, 02013 (2017)
https://doi.org/10.1051/epjconf/201715702013

Recent progress on improving ICRF coupling and reducing RF-specific impurities in ASDEX Upgrade

Wei Zhang¹^,2^,3^*, Volodymyr Bobkov¹, Jean-Marie Noterdaeme¹^,2, Wouter Tierens¹, Diogo Aguiam⁴, Roberto Bilato¹, David Coster¹, Laurent Colas⁵, Kristel Crombé²^,6, Helmut Fuenfgelder¹, Helmut Faugel¹, Yuhe Feng⁷, Jonathan Jacquot¹, Philippe Jacquet⁸, Arne Kallenbach¹, Ana Kostic¹^,2, Tilmann Lunt¹, Riccardo Maggiora⁹, Roman Ochoukov¹, Antonio Silva⁴, Guillermo Suárez¹, Angelo A. Tuccilo¹⁰, Onofrio Tudisco¹⁰, Mariia Usoltceva¹^,2, Dirk Van Eester⁶, Yongsheng Wang³, Qingxi Yang, the ASDEX Upgrade Team ³ and the EUROfusion MST1 Team ¹¹

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

Abstract

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.

¹¹

See the author list of IAEA FEC 2016 OV/P-12 by H. Meyer et al., to be published in Nucl. Fusion

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.

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