Analysis of radiative disruptions in RF-heated Tore Supra plasmas using infrared imaging

被引：25

作者：

Ekedahl, A. ^{[1
]}

Bucalossi, J. ^{[1
]}

Corre, Y. ^{[1
]}

Delchambre, E. ^{[1
]}

Dunand, G. ^{[1
]}

Meyer, O. ^{[1
]}

Mitteau, R. ^{[1
]}

Monier-Garbet, P. ^{[1
]}

Pegourie, B. ^{[1
]}

Rimini, F. G. ^{[1
]}

Saint-Laurent, F. ^{[1
]}

Schwob, J. L. ^{[1
]}

Tsitrone, E. ^{[1
]}

机构：

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

来源：

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

基金：

欧盟地平线“2020”;

关键词：

LIMITS;

D O I：

10.1016/j.jnucmat.2009.01.213

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The precursors and following sequential events leading to radiative disruptions in Tore Supra have been analysed using infrared imaging, together with visible and ultraviolet spectroscopy of impurity species. A common feature observed prior to the disruptions is the appearance of a small (similar to cm(2)) hot spot on the main plasma facing component, the Toroidal Pumped Limiter (TPL), clearly localised in a Zone of thick carbon re-deposition (> 100 mu m). A MARFE (Multifaceted Asymmetric Radiation From the Edge) is often triggered, followed by disruption. Such hot spots have been observed in similar to 24% of the analysed disruptions, which is consistent with the fact that only 4/18 (22%) of the total area of the TPL is monitored with infrared cameras. These results suggest that over-heating of thick carbon re-deposition layers may play a role in the operational limits (MARFE, disruption) encountered. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：806 / 809

页数：4

共 15 条

[1]

BUCALOSSI J, 2007, P 34 EPS C PLASM P F, V31

[2]

CARPENTIER S, 2008, J NUCL MAT UNPUB

[3] Understanding the spatial structure of RF-induced SOL modifications [J].

Colas, L. ;

Ekedahl, A. ;

Goniche, M. ;

Gunn, J. P. ;

Nold, B. ;

Corre, Y. ;

Bobkov, V. ;

Dux, R. ;

Braun, F. ;

Noterdaeme, J-M ;

Mayoral, M-L ;

Kirov, K. ;

Mailloux, J. ;

Heuraux, S. ;

Faudot, E. ;

Ongena, J. .

PLASMA PHYSICS AND CONTROLLED FUSION, 2007, 49 (12B) :B35-B45

[4] Characterization of the carbon erosion on the limiter of Tore Supra [J].

Delchambre, E. ;

Beaute, A. ;

Brezinsek, S. ;

Carpentier, S. ;

Corre, Y. ;

Dunand, G. ;

Ekedahl, A. ;

Escarguel, A. ;

Gunn, J. ;

Marandet, Y. ;

Moncada, V. ;

Monier-Garbet, P. ;

Travere, J. M. ;

Tsitrone, E. ;

Pegourie, B. .

JOURNAL OF NUCLEAR MATERIALS, 2009, 390-91 :65-67

[5]

Ekedahl A, 2007, AIP CONF PROC, V933, P237

[6] Density limits in toroidal plasmas [J].

Greenwald, M .

PLASMA PHYSICS AND CONTROLLED FUSION, 2002, 44 (08) :R27-R80

[7]

Guilhem D, 1997, J NUCL MATER, V241, P542, DOI 10.1016/S0022-3115(96)00561-2

[8]

HONG S, 2008, J NUCL MAT UNPUB

[9] Impurity production monitoring during RF experiments in Tore Supra [J].

Meyer, O. ;

Monier-Garbet, P. ;

Devynck, P. ;

Ekedahl, A. ;

Oddon, P. ;

Pegourie, B. ;

Vartanian, S. .

JOURNAL OF NUCLEAR MATERIALS, 2009, 390-91 :1013-1016

[10] A possible method of carbon deposit mapping on plasma facing components using infrared thermography [J].

Mitteau, R. ;

Spruytte, J. ;

Vallet, S. ;

Travere, J. M. ;

Guilhem, D. ;

Brosset, C. .

JOURNAL OF NUCLEAR MATERIALS, 2007, 363 :206-210

← 1 2 →