Understanding the spatial structure of RF-induced SOL modifications

被引：58

作者：

Colas, L. ^{[1
]}

Ekedahl, A. ^{[1
]}

Goniche, M. ^{[1
]}

Gunn, J. P. ^{[1
]}

Nold, B. ^{[1
]}

Corre, Y. ^{[1
]}

Bobkov, V. ^{[2
]}

Dux, R. ^{[2
]}

Braun, F. ^{[2
]}

Noterdaeme, J-M ^{[2
,6
]}

Mayoral, M-L

Kirov, K. ^{[3
]}

Mailloux, J. ^{[3
]}

Heuraux, S. ^{[4
]}

Faudot, E. ^{[4
]}

Ongena, J. ^{[5
]}

机构：

[1] CEA DSM DRFC, Assoc EURATOM CEA, Ctr Cadarache, F-13108 St Paul Les Durance, France

[2] EURATOM, Max Planck Inst Plasmaphys, D-85748 Garching, Germany

[3] UKAEA Euratom Fus Assoc, Culham Sci Ctr, Abingdon OX14 3DB, Oxon, England

[4] CNRS, LPMIA, UMR 7040, F-54506 Vandoeuvre Les Nancy, France

[5] Assoc EURATOM Belgian State, ERM KMS, Brussels, Belgium

[6] Univ Ghent, EESA Dept, B-9000 Ghent, Belgium

来源：

PLASMA PHYSICS AND CONTROLLED FUSION | 2007年 / 49卷 / 12B期

关键词：

TORE-SUPRA TOKAMAK; ICRF ANTENNAS; DENSITY CONVECTION; ASDEX UPGRADE; SHEATH; ACCELERATION; DISCHARGE; ELECTRONS; LIMITERS; WAVES;

D O I：

10.1088/0741-3335/49/12B/S02

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

This paper summarizes recent experimental characterization of radio frequency (RF)-induced scrape-off layer (SOL) modifications in ASDEX-Upgrade (AUG), JET and Tore Supra (TS). Geometrical aspects are emphasized: complex SOL patterns are observed by several indicators visualized in one or two dimensions transverse to the magnetic field lines. Results are ascribed to inhomogeneous R-F-induced SOL biasing around powered ion cyclotron range of frequencies antennas and associated E x B-0 density convection (D'Ippolito et al 1993 Phys. Fluids B 5 3603). Within a simple RF sheath model (Perkins 1989 Nucl. Fusion 29 583), the shape of convective cells on TS can be interpreted in terms of RF-sheath generation by parallel RF currents. Some lessons are drawn for future machines.

引用

页码：B35 / B45

页数：11

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