The impact of the ITER-like wall at JET on disruptions

被引：66

作者：

de Vries, P. C. ^{[1
]}

Arnoux, G. ^{[2
]}

Huber, A. ^{[3
]}

Flanagan, J. ^{[2
]}

Lehnen, M. ^{[3
]}

Riccardo, V. ^{[2
]}

Reux, C. ^{[4
]}

Jachmich, S. ^{[5
]}

Lowry, C. ^{[6
]}

Calabro, G. ^{[7
]}

Frigione, D. ^{[7
]}

Tsalas, M. ^{[1
]}

Hartmann, N. ^{[3
]}

Brezinsek, S. ^{[3
]}

Clever, M. ^{[3
]}

Douai, D. ^{[8
]}

Groth, M. ^{[9
]}

Hender, T. C. ^{[2
]}

Hodille, E. ^{[10
]}

Joffrin, E. ^{[8
]}

Kruezi, U. ^{[3
]}

Matthews, G. F. ^{[2
]}

Morris, J. ^{[2
]}

Neu, R. ^{[11
]}

Philipps, V. ^{[3
]}

Sergienko, G. ^{[3
]}

Sertoli, M. ^{[10
]}

机构：

[1] EURATOM, FOM Inst DIFFER, Nieuwegein, Netherlands

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

[3] EURATOM, Forschungszentrum Julich, Inst Energie & Klimatforsch IEK 4, D-52425 Julich, Germany

[4] Ecole Polytech, CNRS, F-91128 Palaiseau, France

[5] ERM KMS, Assoc Euratom Etat Belge Belg Staat, Brussels, Belgium

[6] Commiss European Communities, B-1049 Brussels, Belgium

[7] Assoc Euratom ENEA Fus, I-00044 Rome, Italy

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

[9] Aalto Univ, Assoc EURATOM Tekes, Espoo, Finland

[10] Ecole Cent Lyon, F-69134 Ecully, France

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

来源：

PLASMA PHYSICS AND CONTROLLED FUSION | 2012年 / 54卷 / 12期

关键词：

DENSITY LIMIT; ASDEX UPGRADE; MITIGATION; TOKAMAKS; DIVERTOR; PLASMAS;

D O I：

10.1088/0741-3335/54/12/124032

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：

The new full-metal ITER-like wall (ILW) at JET was found to have a profound impact on the physics of disruptions. The main difference is a significantly lower fraction (by up to a factor of 5) of energy radiated during the disruption process, yielding higher plasma temperatures after the thermal quench and thus longer current quench times. Thus, a larger fraction of the total energy was conducted to the wall resulting in larger heat loads. Active mitigation by means of massive gas injection became a necessity to avoid beryllium melting already at moderate levels of thermal and magnetic energy (i.e. already at plasma currents of 2 MA). A slower current quench, however, reduced the risk of runaway generation. Another beneficial effect of the ILW is that disruptions have a negligible impact on the formation and performance of the subsequent discharge.

引用

页数：9

共 50 条

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