Estimated RF sheath power fluxes on ITER plasma facing components

被引：17

作者：

Coias, L. ^{[1
]}

Milanesio, D. ^{[2
]}

Faudot, E. ^{[3
]}

Goniche, M. ^{[1
]}

Loarte, A. ^{[4
]}

机构：

[1] IRFM, CEA, F-13108 St Paul Les Durance, France

[2] Politecn Torino, Dipartimento Elettron, I-10129 Turin, Italy

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

[4] ITER Org, Fus Sci & Technol Dept Cadarache, F-13108 St Paul Les Durance, France

来源：

JOURNAL OF NUCLEAR MATERIALS | 2009年 / 390-91卷

关键词：

TORE-SUPRA; ICRF ANTENNAS; CONVECTION; PHYSICS;

D O I：

10.1016/j.jnucmat.2009.01.248

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Using numerical simulation, a first estimate is made of power fluxes caused by radio-frequency sheaths on plasma facing components surrounding the ITER Ion Cyclotron Range of Frequencies wave launcher. Three toroidal strap phasings were considered, and four plasma scenarios covering a broad range of Scrape-Off Layer densities. Parallel heat fluxes up to similar to 16 MW/m(2) are obtained, localized in poloidal peaks whose radial extension (initially 4-35 mm) increases when nearby flux tubes are coupled by exchanging RF currents. Quantitative results strongly depend on the local density, both via the unperturbed input profiles and via subsequent RF-induced modifications by E x B-0 convection. Sources of uncertainty and aspects requiring further validation are identified. (C) 2009 Elsevier B.V. All rights reserved.

引用

收藏

页码：959 / 962

页数：4

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