0440114 - ÚFP 2015 RIV AT eng J - Článek v odborném periodiku
Bobkov, Vl.V. - Braun, F. - Dux, R. - Herrmann, A. - Giannone, L. - Kallenbach, A. - Křivská, Alena - Müller, H.W. - Neu, R. - Noterdaeme, J.-M. - Pütterich, T. - Rohde, V. - Schweinzer, J. - Sips, A. - Zammuto, I.
Assessment of compatibility of ICRF antenna operation with full W wall in ASDEX Upgrade.
Nuclear Fusion. Roč. 50, č. 3 (2010), 035004-035004. ISSN 0029-5515. E-ISSN 1741-4326.
[Workshop on Stochasticity in Fusion Plasmas/4./. Julich, 02.03.2009-04.03.2009]
Institucionální podpora: RVO:61389021
Klíčová slova: tokamak * ICRF
Kód oboru RIV: BL - Fyzika plazmatu a výboje v plynech
Impakt faktor: 3.303, rok: 2010
http://iopscience.iop.org/0029-5515/50/3/035004/pdf/0029-5515_50_3_035004.pdf

The compatibility of ICRF (ion cyclotron range of frequencies)antenna operation with high-Z plasma facing components is assessed in ASDEX Upgrade (AUG)with its tungsten (W) first wall. The mechanism of ICRF-related W sputtering was studied by various diagnostics including the local spectroscopic measurements of W sputtering yield YW on antenna limiters.Modification of one antenna with triangular shields,which cover the locations where long magnetic field lines pass only one out of two (0π)-phased antenna straps,did not influence the locally measured YW values markedly.In the experiments with antennas powered individually,poloidal profiles of YW on limiters of powered antennas show high YW close to the equatorial plane and at the very edge of the antenna top.The YW-profile on an unpowered antenna limiter peaks at the location projecting to the top of the powered antenna.An interpretation of the YW measurements is presented, assuming a direct link between theWsputtering and the
Trvalý link: http://hdl.handle.net/11104/0243227