Turbulent transport in the TCV SOL

被引：72
作者：
Garcia, O. E.
Pitts, R. A.
Horacek, J.
Nielsen, A. H.
Fundamenski, W.
Graves, J. P.
Naulin, V.
Rasmussen, J. Juul
机构：
[1] EURATOM, Riso Natl Lab, DK-4000 Roskilde, Denmark
[2] Ecole Polytech Fed Lausanne, Ctr Rech Phys Plasmas, Assoc Euratom Confederat Suisse, CH-1015 Lausanne, Switzerland
[3] UKAEA Euratom Fus Assoc, Culham Sci Ctr, Abingdon OX14 3DB, Oxon, England
来源：
JOURNAL OF NUCLEAR MATERIALS | 2007年 / 363卷
关键词：
TCV; cross-field transport; fluctuations and turbulence; diffusion;
D O I：
10.1016/j.jnucmat.2006.12.063
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
From probe measurements in the far SOL of TCV it is demonstrated that while the particle density profile becomes increasingly broader with increasing line averaged density, the radial variation of the fluctuation statistics remains the same. Excellent agreement is found between the experimental measurements and an interchange turbulence simulation, revealing intermittent plasma transport dominated by radial motion of plasma filaments. On the basis of this favourable code-experiment agreement, it is concluded that no reliable parameterization exists for the turbulent particle flux in terms of effective diffusion and convection coefficients. (c) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：575 / 580
页数：6
相关论文
共 25 条
[1]   Structures, profile consistency, and transport scaling in electrostatic convection [J].
Bian, NH ;
Garcia, OE .
PHYSICS OF PLASMAS, 2005, 12 (04) :1-12
[2]   Transport by intermittency in the boundary of the DIII-D tokamak [J].
Boedo, JA ;
Rudakov, DL ;
Moyer, RA ;
McKee, GR ;
Colchin, RJ ;
Schaffer, MJ ;
Stangeby, PG ;
West, WP ;
Allen, SL ;
Evans, TE ;
Fonck, RJ ;
Hollmann, EM ;
Krasheninnikov, S ;
Leonard, AW ;
Nevins, W ;
Mahdavi, MA ;
Porter, GD ;
Tynan, GR ;
Whyte, DG ;
Xu, X .
PHYSICS OF PLASMAS, 2003, 10 (05) :1670-1677
[3]   Comparison of theoretical models for scrape-off layer widths with data from COMPASS-D, JET and Alcator C-Mod [J].
Connor, JW ;
Counsell, GF ;
Erents, SK ;
Fielding, SJ ;
LaBombard, B ;
Morel, K .
NUCLEAR FUSION, 1999, 39 (02) :169-188
[4]   Radial interchange motions of plasma filaments [J].
Garcia, O. E. ;
Bian, N. H. ;
Fundamenski, W. .
PHYSICS OF PLASMAS, 2006, 13 (08)
[5]   Turbulence simulations of blob formation and radial propagation in toroidally magnetized plasmas [J].
Garcia, OE ;
Naulin, V ;
Nielsen, AH ;
Rasmussen, JJ .
PHYSICA SCRIPTA, 2006, T122 :89-103
[6]   Turbulence and intermittent transport at the boundary of magnetized plasmas [J].
Garcia, OE ;
Naulin, V ;
Nielsen, AH ;
Rasmussen, JJ .
PHYSICS OF PLASMAS, 2005, 12 (06) :1-14
[7]   Interchange turbulence in the TCV scrape-off layer [J].
Garcia, OE ;
Horacek, J ;
Pitts, RA ;
Nielsen, AH ;
Fundamenski, W ;
Graves, JP ;
Naulin, V ;
Rasmussen, JJ .
PLASMA PHYSICS AND CONTROLLED FUSION, 2006, 48 (01) :L1-L10
[8]   Mechanism and scaling for convection of isolated structures in nonuniformly magnetized plasmas [J].
Garcia, OE ;
Bian, NH ;
Naulin, V ;
Nielsen, AH ;
Rasmussen, JJ .
PHYSICS OF PLASMAS, 2005, 12 (09) :1-4
[9]   Computations of intermittent transport in scrape-off layer plasmas [J].
Garcia, OE ;
Naulin, V ;
Nielsen, AH ;
Rasmussen, JJ .
PHYSICAL REVIEW LETTERS, 2004, 92 (16) :165003-1
[10]   Self-similar density turbulence in the TCV tokamak scrape-off layer [J].
Graves, JP ;
Horacek, J ;
Pitts, RA ;
Hopcraft, KI .
PLASMA PHYSICS AND CONTROLLED FUSION, 2005, 47 (03) :L1-L9
123