Advances in understanding and utilising ELM control in JET

被引：8

作者：

Chapman, I. T. ^{[1
,11
]}

de la Luna, E. ^{[2
,54
]}

Lang, P. T. ^{[3
,57
]}

Liang, Y. ^{[4
,37
]}

Alper, B. ^{[1
,11
]}

Denner, P. ^{[4
,37
]}

Frigione, D. ^{[5
,82
]}

Garzotti, L. ^{[1
,11
]}

Ham, C. J. ^{[1
]}

Huijsmans, G. T. A. ^{[6
]}

Jachmich, S. ^{[4
,34
,55
]}

Kocsis, G. ^{[7
,103
]}

Lennholm, M. ^{[8
,35
]}

Lupelli, I. ^{[1
,11
]}

Rimini, F. G. ^{[1
,11
]}

Sips, A. C. C. ^{[8
,35
]}

Abhangi, M. ^{[42
]}

Abreu, P. ^{[48
]}

Aftanas, M. ^{[45
]}

Afzal, M. ^{[11
]}

Aggarwal, K. M. ^{[28
]}

Aho-Mantila, L. ^{[102
]}

Ahonen, E. ^{[9
]}

Aints, M. ^{[98
]}

Airila, M. ^{[102
]}

Albanese, R. ^{[96
]}

Alegre, D. ^{[54
]}

Alessi, E. ^{[41
]}

Aleynikov, P. ^{[50
]}

Alfier, A. ^{[15
]}

Alkseev, A. ^{[63
]}

Allan, P. ^{[11
]}

Almaviva, S. ^{[87
]}

Alonso, A. ^{[54
]}

Alper, B. ^{[1
,11
]}

Alsworth, I. ^{[11
]}

Alves, D. ^{[48
]}

Ambrosino, G. ^{[96
]}

Ambrosino, R. ^{[97
]}

Amosov, V. ^{[80
]}

Andersson, F. ^{[19
]}

Andersson Sunden, E. ^{[23
]}

Angelone, M. ^{[82
]}

Anghel, A. ^{[77
]}

Anghel, M. ^{[76
]}

Angioni, C. ^{[57
]}

Appel, L. ^{[11
]}

Apruzzese, G. ^{[82
]}

Arena, P. ^{[29
]}

Ariola, M. ^{[97
]}

机构：

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

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

[3] Max Planck Inst Plasma Phys, D-85748 Garching, Germany

[4] TEC, FZJ, IEK 4, Inst Energie & Klimaforsch, D-52425 Julich, Germany

[5] ENEA Fus, I-00044 Rome, Italy

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

[7] Wigner RCP RMI, H-1121 Budapest, Hungary

[8] Commiss European Communities, JET Exploitat Unit, Culham Sci Ctr, Abingdon OX14 3DB, Oxon, England

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

[10] BCS, Barcelona, Spain

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

[30] Dublin City Univ, Dublin, Ireland

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

来源：

PLASMA PHYSICS AND CONTROLLED FUSION | 2016年 / 58卷 / 01期

关键词：

ELM control; ELM pacing; plasma shaping; ITER; EDGE-LOCALIZED MODES; STABILITY; PEDESTAL; PHYSICS;

D O I：

10.1088/0741-3335/58/1/014017

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：

Edge localised mode (ELM) control may be essential to develop ITER scenarios with a reasonable lifetime of divertor components, whilst ELM pacing may be essential to develop stationary ITER scenarios with a tungsten divertor. Resonant magnetic perturbations (RMPs) have mitigated ELMs in high collisionality plasmas in JET. The efficacy of RMPs in mitigating the ELMs is found to depend on plasma shaping, with the change in magnetic boundary achieved when non-axisymmetric fields are applied facilitating access to small ELM regimes. The understanding of ELM pacing by vertical kicks or pellets has also been improved in a range of pedestal conditions in JET (T-ped = 0.7-1.3 keV) encompassing the ITER-expected domain (beta(N) = 1.4-2.4, H-98(y,H- 2) = 0.8-1.2, f(GW) similar to 0.7). ELM triggering is reliable provided the perturbation is above a threshold which depends on pedestal parameters. ELM triggering is achieved even in the first 10% of the natural ELM cycle suggesting no inherent maximum frequency. At high normalised pressure, the peeling-ballooning modes are stabilised as predicted by ELITE, necessitating a larger perturbation from either kicks or pellets in order to trigger ELMs. Both kicks and pellets have been used to pace ELMs for tungsten flushing. This has allowed stationary plasma conditions with low gas injection in plasmas where the natural ELM frequency is such that it would normally preclude stationary conditions.

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