Title of article
Influence of toroidal and vertical magnetic fields on Ion Cyclotron Wall Conditioning in tokamaks
Author/Authors
Lyssoivan، نويسنده , , A. A. Sergienko، نويسنده , , G. and Rohde، نويسنده , , V. and Philipps، نويسنده , , V. and van Wassenhove، نويسنده , , G. and Vervier، نويسنده , , M. and Bobkov، نويسنده , , V. and Harhausen، نويسنده , , J. and Koch، نويسنده , , R. and Noterdaeme، نويسنده , , J.-M. and van Eester، نويسنده , , D. and Freisinger، نويسنده , , M. and Fahrbach، نويسنده , , H.-U. and Reimer، نويسنده , , H. and Kreter، نويسنده , , A. and Hartmann، نويسنده , , D. Q. Hu، نويسنده , , J. and Weynants، نويسنده , , R. and Gruber، نويسنده , , O. and Herrmann، نويسنده , , A. and Douai، نويسنده , , D. and Bae، نويسنده , , Y.D. and Esser، نويسنده , , H.G. and Kwak، نويسنده , , J.G. and Lerche، نويسنده , , E. and Marchuk، نويسنده , , O. and Mertens، نويسنده , , V. and Neu، نويسنده , , R. and Samm، نويسنده , , U. and Scarabosio، نويسنده , , A. and Schulz، نويسنده , , C. and Wang، نويسنده , , S.J.، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2009
Pages
4
From page
907
To page
910
Abstract
In the present paper, inter-machine studies of Ion Cyclotron Wall Conditioning (ICWC) have been performed in limiter (TEXTOR) and divertor (ASDEX Upgrade, AUG) tokamaks in the presence of toroidal (0.2–2.35 T) and vertical (0–0.04 T) magnetic fields using the conventional ICRF antennas without modifications in hardware. The ICWC effect on both machines was studied by analyzing the removal rate of marker gases which have been loaded to the walls by glow discharge beforehand. Several factors were identified which could have a crucial impact on the conditioning efficiency: (i) RF power coupled to the plasmas; (ii) RF power absorption scheme; (iii) superimposing an additional vertical magnetic field on the toroidal field (BV << BT). All the observed effects are analyzed in terms of RF plasma wave excitation/absorption and compared with the predictions from 1-D RF and 0-D transport codes. ICWC scenarios for ITER are proposed and analyzed.
Journal title
Journal of Nuclear Materials
Serial Year
2009
Journal title
Journal of Nuclear Materials
Record number
1365443
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