Understanding the physics of ELM pacing via vertical kicks in JET in view of ITER

被引：46

作者：

de la Luna, E. ^{[1
,52
]}

Chapman, I. T. ^{[2
,9
]}

Rimini, F. ^{[2
]}

Lomas, P. J. ^{[2
,9
]}

Saibene, G. ^{[3
,36
]}

Koechl, F. ^{[4
]}

Sartori, R. ^{[3
,36
]}

Saarelma, S. ^{[2
,9
]}

Albanese, R. ^{[5
,94
]}

Flanagan, J. ^{[2
,9
]}

Maviglia, F. ^{[5
,12
,31
]}

Parail, V. ^{[2
,9
]}

Sips, A. C. C. ^{[6
,33
]}

Solano, E. R. ^{[1
,32
,52
]}

Abhangi, M. ^{[40
]}

Abreu, P. ^{[46
]}

Aftanas, M. ^{[43
]}

Afzal, M. ^{[9
]}

Aggarwal, K. M. ^{[26
]}

Aho-Mantila, L. ^{[100
]}

Ahonen, E. ^{[7
]}

Aints, M. ^{[96
]}

Airila, M. ^{[100
]}

Albanese, R. ^{[5
,94
]}

Alegre, D. ^{[52
]}

Alessi, E. ^{[39
]}

Aleynikov, P. ^{[48
]}

Alfier, A. ^{[13
]}

Alkseev, A. ^{[61
]}

Allan, P. ^{[9
]}

Almaviva, S. ^{[85
]}

Alonso, A. ^{[52
]}

Alper, B. ^{[9
]}

Alsworth, I. ^{[9
]}

Alves, D. ^{[46
]}

Ambrosino, G. ^{[94
]}

Ambrosino, R. ^{[95
]}

Amosov, V. ^{[78
]}

Andersson, F. ^{[17
]}

Andersson Sunden, E. ^{[21
]}

Angelone, M. ^{[80
]}

Anghel, A. ^{[75
]}

Anghel, M. ^{[74
]}

Angioni, C. ^{[55
]}

Appel, L. ^{[9
]}

Apruzzese, G. ^{[80
]}

Arena, P. ^{[27
]}

Ariola, M. ^{[95
]}

Arnichand, H. ^{[10
]}

Arnoux, G. ^{[9
]}

机构：

[1] CIEMAT, Lab Nacl Fus, E-28040 Madrid, Spain

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

[3] Fus Energy Joint Undertaking, Barcelona 08019, Spain

[4] TU Wien, Inst Atom, OAW ATI, A-1020 Vienna, Austria

[5] Univ Naples Federico II, Consorzio CREATE, I-80125 Naples, Italy

[6] Culham Sci Ctr, EUROFus JEU, Abingdon OX14 3DB, Oxon, England

[7] Aalto Univ, FIN-00076 Aalto, Finland

[8] BCS, Barcelona, Spain

[9] Culham Sci Ctr, CCFE, Abingdon OX14 3DB, Oxon, England

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

[11] Ctr Brasileiro Pesquisas Fis, BR-22290180 Rio De Janeiro, Brazil

[12] Consorzio CREATE, I-80125 Naples, Italy

[13] Consorzio RFX, I-35127 Padua, Italy

[14] Daegu Univ, Gyongsan 712174, Gyeongbuk, South Korea

[15] Univ Carlos III Madrid, Dept Fis, Madrid 28911, Spain

[16] Univ Ghent, Dept Appl Phys, B-9000 Ghent, Belgium

[17] Chalmers Univ Technol, Dept Earth & Space Sci, SE-41296 Gothenburg, Sweden

[18] Univ Cagliari, Dept Elect & Elect Engn, I-09123 Cagliari, Italy

[19] Comenius Univ, Fac Math Phys & Informat, Dept Expt Phys, Bratislava 84248, Slovakia

[20] Univ Strathclyde, Dept Phys & Appl Phys, Glasgow G4 ONG, Lanark, Scotland

[21] Uppsala Univ, Dept Phys & Astron, SE-75120 Uppsala, Sweden

[22] Lund Univ, Dept Phys, SE-22100 Lund, Sweden

[23] KTH, SCI, Dept Phys, SE-10691 Stockholm, Sweden

[24] Univ Oxford, Dept Phys, Oxford OX1 2JD, England

[25] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England

[26] Queens Univ, Dept Pure & Appl Phys, Belfast BT7 1NN, Antrim, North Ireland

[27] Univ Catania, Dipartimento Ingn Elettr Elettr & Sistemi, I-95125 Catania, Italy

[28] Dublin City Univ, Dublin, Ireland

[29] CRPP, EPFL, CH-1015 Lausanne, Switzerland

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

[31] EUROfus Programme Management Unit, D-85748 Garching, Germany

[32] Culham Sci Ctr, EUROfus Programme Management Unit, Abingdon OX14 3DB, Oxon, England

[33] European Commiss, B-1049 Brussels, Belgium

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

[35] Forsch Zentrum Julich GmbH, Inst Energie & Klimaforsch Plasmaphys, D-52425 Julich, Germany

[36] Fus Energy Joint Undertaking, Barcelona 08019, Spain

[37] KTH, EES, Fus Plasma Phys, SE-10044 Stockholm, Sweden

[38] Gen Atom, San Diego, CA 85608 USA

[39] IFP CNR, I-20125 Milan, Italy

[40] Inst Plasma Res, Gandhinagar 382428G, Gujarat, India

[41] Bulgarian Acad Sci, Inst Elect, BU-1784 Sofia, Bulgaria

[42] Inst Plasma Phys & Laser Microfus, PL-01497 Warsaw, Poland

[43] Inst Plasma Phys AS CR, Prague 182 00 8, Czech Republic

[44] Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China

[45] Univ Sao Paulo, Inst Fis, BR-05508090 Sao Paulo, Brazil

[46] Univ Lisbon, Inst Super Tecn, Inst Plasmas & Fusao Nucl, Lisbon, Portugal

[47] Ioffe Phys Tech Inst, St Petersburg 194021, Russia

[48] ITER Org, F-13067 St Paul Les Durance, France

[49] Naka Fus Res Estab, Japan Atom Energy Agcy, Naka 3110913, Ibaraki, Japan

[50] Karlsruhe Inst Technol, D-76021 Karlsruhe, Germany

来源：

NUCLEAR FUSION | 2016年 / 56卷 / 02期

关键词：

vertical kicks; JET; ELM control; modelling; nuclear fusion; ITER; PARTICLE LOSSES; I ELMS; POSITION; ENERGY; MITIGATION; OPERATION; SHAPE;

D O I：

10.1088/0029-5515/56/2/026001

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：

Experiments on JET, with both the previous carbon wall (JET-C) and the new Be/W wall (JET-ILW), have demonstrated the efficacy of using a fast vertical plasma motion (known as vertical kicks in JET) for active ELM control. In this paper we report on a series of experiments that have been recently conducted in JET-ILW with the goal of further improving the physics understanding of the processes governing the triggering of ELMs via vertical kicks. This is a necessary step to confidently extrapolate this ELM control method to ITER. Experiments have shown that ELMs can be reliably triggered provided a minimum vertical plasma displacement and velocity is imposed. The magnitude of the minimum displacement depends on the plasma parameters, being smaller for higher pedestal temperatures and lower collisionalities, which is encouraging in view of ITER. Modelling and stability analysis suggest that a localized current density induced by the vertical plasma movement close to the separatrix plays a major role in the ELM triggering mechanism, which is consistent with the experimental observations. The implications of these results for the extrapolation of this ELM control scheme to ITER are discussed.

引用

页数：22

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