Use of the disruption mitigation valve in closed loop for routine protection at JET

被引：23

作者：

Reux, Cedric ^{[1
,5
]}

Lehnen, Michael ^{[2
]}

Kruezi, Uron ^{[2
]}

Jachmich, Stefan ^{[3
,4
]}

Card, Peter ^{[8
]}

Heinola, Kalle ^{[7
]}

Joffrin, Emmanuel ^{[6
]}

Lomas, Peter J. ^{[8
]}

Marsen, Stefan ^{[9
]}

Matthews, Guy ^{[8
]}

Riccardo, Valeria ^{[8
]}

Rimini, Fernanda ^{[8
]}

de Vries, Peter ^{[10
]}

机构：

[1] Ecole Polytech, CNRS, UMR 7648, LPP, F-91128 Palaiseau, France

[2] Assoc EURATOM FZJ, Trilateral Euregio Cluster, D-52425 Julich, Germany

[3] Assoc EURATOM Belgian State Inst ERM KMS, Lab Phys Plasmas, Lab Plasmafys, B-1000 Brussels, Belgium

[4] EFDA CSU, Culham Sci Ctr, Abingdon OX14 3DB, Oxon, England

[5] JET EFDA, Culham Sci Ctr, Abingdon OX14 3DB, Oxon, England

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

[7] Univ Helsinki, Dept Phys, FIN-00014 Helsinki, Finland

[8] EURATOM CCFE Assoc, Culham Sci Ctr, Abingdon OX14 3DB, Oxon, England

[9] Max Planck Inst Plasma Phys, EURATOM Assoziat, Teilinst Greifswald, D-17491 Greifswald, Germany

[10] FOM Inst DIFFER, NL-3430 BE Nieuwegein, Netherlands

来源：

FUSION ENGINEERING AND DESIGN | 2013年 / 88卷 / 6-8期

基金：

英国工程与自然科学研究理事会;

关键词：

Disruption; Tokamak; Disruption mitigation; Massive gas injection; Real-time systems; Disruption detection;

D O I：

10.1016/j.fusengdes.2012.12.026

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

Disruptions are a major concern for next-generation tokamaks, including ITER. Heat loads, electromagnetic forces and runaway electrons generated by disruptions have to be mitigated for a reliable operation of future machines. Massive gas injection is one of the methods proposed for disruption mitigation. This article reports the first use of massive gas injection as an active disruption protection system at JET. During the 2011-2012 campaigns, 67 disruptions have been mitigated by the disruption mitigation valve (DMV) following a detection by mode lock amplitude and loop voltage changes. Most of disruptions where the valve was intended to be used were successfully mitigated by the DMV, although at different stages of the typical slow disruptions of the ITER-like wall. The fraction of magnetic and thermal energy radiated during the disruption was found to be increased by the action of the DMV. Vertical forces dispersion was also reduced. No non-sustained breakdown was observed following pulses terminated by the disruption mitigation valve. (C) 2013 EURATOM. Published by Elsevier B.V. All rights reserved.

引用

页码：1101 / 1104

页数：4

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