Characterization of 3-strap antennas in ASDEX Upgrade

Volodymyr Bobkov, Roberto Bilato, Laurent Colas, Ralph Dux, Eric Faudot, Helmut Faugel, Helmut Fünfgelder, Albrecht Herrmann, Jonathan Jacquot, Arne Kallenbach, Daniele Milanesio, Riccardo Maggiora, Rudolf Neu, Jean Marie Noterdaeme, Roman Ochoukov, Thomas Pütterich, Wouter Tierens, Wei Zhang

Research output: Contribution to journalConference articlepeer-review

13 Scopus citations


The response of the local RF current measured at limiters of 3-strap ICRF antenna to variations of power balance and phasing at fICRF=30MHz agrees qualitatively well with EM calculations by TOPICA and RAPLICASOL codes. Measurements of tungsten sputtering yield and DC current at the limiters correlate strongly with the local RF current. In contrast to findings for the 2-strap antennas, values of DC current are predominantly positive, and negative only for some locations and feeding parameters. Explanations can involve more physical mechanisms than only parallel sheath dynamics.

Original languageEnglish
Article number03005
JournalEPJ Web of Conferences
StatePublished - 23 Oct 2017
Event22nd Topical Conference on Radio-Frequency Power in Plasmas 2017 - Aix en Provence, France
Duration: 30 May 20172 Jun 2017


Dive into the research topics of 'Characterization of 3-strap antennas in ASDEX Upgrade'. Together they form a unique fingerprint.

Cite this