Gyrokinetic study of turbulent convection of heavy impurities in tokamak plasmas at comparable ion and electron heat fluxes

被引：33

作者：

Angioni, C. ^{[1
]}

Bilato, R. ^{[1
]}

Casson, F. J. ^{[2
]}

Fable, E. ^{[1
]}

Mantica, P. ^{[3
]}

Odstrcil, T. ^{[1
]}

Valisa, M. ^{[4
]}

Abhangi, M. ^{[38
]}

Abreu, P. ^{[44
]}

Aftanas, M. ^{[41
]}

Afzal, M. ^{[7
]}

Aggarwal, K. M. ^{[24
]}

Aho-Mantila, L. ^{[98
]}

Ahonen, E. ^{[5
]}

Aints, M. ^{[94
]}

Airila, M. ^{[98
]}

Albanese, R. ^{[92
]}

Alegre, D. ^{[50
]}

Alessi, E. ^{[37
]}

Aleynikov, P. ^{[46
]}

Alfier, A. ^{[11
]}

Alkseev, A. ^{[59
]}

Allan, P. ^{[7
]}

Almaviva, S. ^{[83
]}

Alonso, A. ^{[50
]}

Alper, B. ^{[7
]}

Alsworth, I. ^{[7
]}

Alves, D. ^{[44
]}

Ambrosino, G. ^{[92
]}

Ambrosino, R. ^{[93
]}

Amosov, V. ^{[76
]}

Andersson, F. ^{[15
]}

Andersson Sunden, E. ^{[19
]}

Angelone, M. ^{[78
]}

Anghel, A. ^{[73
]}

Anghel, M. ^{[72
]}

Appel, L. ^{[7
]}

Apruzzese, G. ^{[78
]}

Arena, P. ^{[25
]}

Ariola, M. ^{[93
]}

Arnichand, H. ^{[8
]}

Arnoux, G. ^{[7
]}

Arshad, S. ^{[34
]}

Ash, A. ^{[7
]}

Asp, E. ^{[19
]}

Asunta, O. ^{[5
]}

Atanasiu, C. V. ^{[73
]}

Austin, Y. ^{[7
]}

Avotina, L. ^{[91
]}

Axton, M. D. ^{[7
]}

机构：

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

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

[3] CNR, ENEA, Ist Fis Plasma, Milan, Italy

[4] Consorzio RFX CNR ENEA, I-35127 Padua, Italy

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

[6] BCS, Barcelona, Spain

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

[26] Dublin City Univ, Dublin, Ireland

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

[49] Univ Nice Sophia Antipolis, Lab JA Dieudonne, F-06108 Nice 2, France

[50] CIEMAT, Lab Nacl Fus, Madrid, Spain

来源：

NUCLEAR FUSION | 2017年 / 57卷 / 02期

关键词：

impurity transport; gyrokinetic simulations; tokamaks; NEOCLASSICAL TRANSPORT; H-MODE; IMPURE PLASMA; COLLISIONALITY;

D O I：

10.1088/0029-5515/57/2/022009

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：

In tokamaks, the role of turbulent transport of heavy impurities, relative to that of neoclassical transport, increases with increasing size of the plasma, as clarified by means of general scalings, which use the ITER standard scenario parameters as reference, and by actual results from a selection of discharges from ASDEX Upgrade and JET. This motivates the theoretical investigation of the properties of the turbulent convection of heavy impurities by nonlinear gyrokinetic simulations in the experimentally relevant conditions of comparable ion and electron heat fluxes. These conditions also correspond to an intermediate regime between dominant ion temperature gradient turbulence and trapped electron mode turbulence. At moderate plasma toroidal rotation, the turbulent convection of heavy impurities, computed with nonlinear gyrokinetic simulations, is found to be directed outward, in contrast to that obtained by quasi-linear calculations based on the most unstable linear mode, which is directed inward. In this mixed turbulence regime, with comparable electron and ion heat fluxes, the nonlinear results of the impurity transport can be explained by the coexistence of both ion temperature gradient and trapped electron modes in the turbulent state, both contributing to the turbulent convection and diffusion of the impurity. The impact of toroidal rotation on the turbulent convection is also clarified.

引用

页数：11

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