@inproceedings{b4ce8bace8544769b2ed9e4bbdced9aa,
title = "Progress in controlling ICRF-edge interactions in ASDEX upgrade",
abstract = "RF measurements during variation of the strap voltage balance of the original 2-strap ICRF antenna in ASDEX Upgrade at constant power are consistent with electromagnetic calculations by HFSS and TOPICA, more so for the latter. RF image current compensation is observed at the antenna limiters in the experiment at a local strap voltage of about half of the value of the remote strap, albeit with a non-negligible uncertainty in phasing. The RF-specific tungsten (W) source at the broad-limiter 2-strap antenna correlates strongly with the RF voltage at the local strap at the locations not connected to opposite side of the antenna along magnetic field lines. The trends of the observed increase of the RF loading with injection of local gas are well described by a combined EMC3-Eirene - FELICE calculations, with the most efficient improvement confirmed for the outer-midplane valves, but underestimated by about 1/3. The corresponding deuterium density tailoring is also likely responsible for the decrease of local W sources observed in the experiment.",
author = "Vl Bobkov and Ph Jacquet and R. Ochoukov and W. Zhang and R. Bilato and F. Braun and D. Carralero and L. Colas and R. Dux and H. Faugel and H. F{\"u}nfgelder and J. Jacquot and A. K{\v r}ivsk{\'a} and T. Lunt and D. Milanesio and R. Maggiora and O. Meyer and Noterdaeme, {J. M.} and S. Potzel and Th P{\"u}tterich and I. Stepanov",
note = "Funding Information: This work has been carried out within the framework of the EUROfusion Consortium and has received funding from the Euratom research and training programme 2014-2018 under grant agreement No 633053. The views and opinions expressed herein do not necessarily reflect those of the European Commission.; 21st Topical Conference on Radiofrequency Power in Plasmas ; Conference date: 27-04-2015 Through 29-04-2015",
year = "2015",
month = dec,
day = "10",
doi = "10.1063/1.4936469",
language = "English",
series = "AIP Conference Proceedings",
publisher = "American Institute of Physics Inc.",
editor = "Pinsker, {Robert I.}",
booktitle = "Radio Frequency Power in Plasmas",
}