Enhanced performance in fusion plasmas through turbulence suppression by megaelectronvolt ions

被引：75

作者：

Mazzi, S. ^{[1
,2
,11
]}

Garcia, J. ^{[2
]}

Zarzoso, D. ^{[1
]}

Kazakov, Ye. O. ^{[3
]}

Ongena, J. ^{[3
]}

Dreval, M. ^{[4
,5
]}

Nocente, M. ^{[6
,7
]}

Stancar, Z. ^{[8
,9
,66
]}

Szepesi, G. ^{[9
]}

Eriksson, J. ^{[10
]}

Sahlberg, A. ^{[10
]}

Benkadda, S. ^{[1
]}

Abid, N. ^{[9
]}

Abraham, K. ^{[9
]}

Abreu, P. ^{[12
]}

Adabonyan, O. ^{[9
]}

Adrich, P. ^{[13
]}

Afzal, M. ^{[9
]}

Ahlgren, T. ^{[14
]}

Aho-Mantila, L. ^{[15
]}

Aiba, N. ^{[16
]}

Airila, M. ^{[15
]}

Akhtar, M. ^{[9
]}

Albanese, R. ^{[17
]}

Alderson-Martin, M. ^{[9
]}

Alegre, D. ^{[18
]}

Aleiferis, S. ^{[19
]}

Aleksa, A. ^{[9
]}

Alessi, E. ^{[7
]}

Aleynikov, P. ^{[20
]}

Algualcil, J. ^{[21
]}

Ali, M. ^{[9
]}

Allinson, M. ^{[9
]}

Alper, B. ^{[9
]}

Alves, E. ^{[12
]}

Ambrosino, G. ^{[17
]}

Ambrosino, R. ^{[17
]}

Sunden, E. Andersson ^{[10
]}

Andrew, P. ^{[20
]}

Angelini, B. M. ^{[22
]}

Angioni, C. ^{[23
]}

Antoniou, I. ^{[9
]}

Appel, L. C. ^{[9
]}

Appelbee, C. ^{[9
]}

Aria, S. ^{[9
]}

Ariola, M. ^{[17
]}

Artaserse, G. ^{[22
]}

Arter, W. ^{[9
]}

Artigues, V. ^{[23
]}

Asakura, N. ^{[16
]}

机构：

[1] Aix Marseille Univ, CNRS, PIIM, UMR 7345, Marseille, France

[2] CEA, IRFM, Saint Paul Lez Durance, France

[3] Plasma Phys Lab, LPP ERM KMS, TEC Partner, Brussels, Belgium

[4] Kharkiv Inst Phys & Technol, Inst Plasma Phys, Natl Sci Ctr, Kharkiv, Ukraine

[5] Kharkov Natl Univ, Kharkiv, Ukraine

[6] Univ Milano Bicocca, Milan, Italy

[7] CNR, Inst Plasma Sci & Technol, Milan, Italy

[8] Slovenian Fusion Assoc SFA, Jozef Stefan Inst, Ljubljana, Slovenia

[9] UK Atom Energy Author, Culham Sci Ctr, Abingdon, Oxon, England

[10] Uppsala Univ, Dept Phys & Astron, Uppsala, Sweden

[11] Ecole Polytech Fed Lausanne EPFL, Swiss Plasma Ctr, Lausanne, Switzerland

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

[13] Natl Ctr Nucl Res NCBJ, Otwock, Poland

[14] Univ Helsinki, Helsinki, Finland

[15] VTT Tech Res Ctr Finland, Espoo, Finland

[16] Natl Inst Quantum & Radiol Sci & Technol, Naka, Ibaraki, Japan

[17] Consorzio CREATE, Naples, Italy

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

[19] NCSR Demokritos, Aghia Paraskevi 15310, Greece

[20] ITER Org, St Paul Les Durance, France

[21] Univ Nacl Educ Distancia, Dept Ingn Energet, Madrid, Spain

[22] ENEA CR Frascati, Dipartimento Fus & Tecnol Sicurezza Nucl, Frascati, Italy

[23] Max Planck Inst Plasma Phys, Garching, Germany

[24] Natl Inst Fus Sci, Toki, Gifu, Japan

[25] MIT Plasma Sci & Fus Ctr, Cambridge, MA USA

[26] Univ Politecn Madrid, Grp I2A2, Madrid, Spain

[27] Ctr Energy Res, POB 49, Budapest, Hungary

[28] Consorzio RFX, Padua, Italy

[29] Univ Latvia, Riga, Latvia

[30] Univ Cagliari, Dept Elect & Elect Engn, Cagliari, Italy

[31] Natl Tech Univ Athens, Athens, Greece

[32] Univ Catania, Dipartimento Ingn Elettr Elettron & Informat, Catania, Italy

[33] Oak Ridge Natl Lab, Oak Ridge, TN USA

[34] Culham Sci Ctr, EUROfus Programme Management Unit, Culham, England

[35] Karlsruhe Inst Technol, Karlsruhe, Germany

[36] GEN Atom, San Diego, CA USA

[37] Univ Basel, Dept Phys, Basel, Switzerland

[38] KTH Royal Inst Technol, Fus Plasma Phys, EECS, Stockholm, Sweden

[39] Univ Lorraine, Inst Jean Lamour, UMR 7198, CNRS, Vandoeuvre Les Nancy, France

[40] Max Planck Inst Plasma Phys, Teilinst Greifswald, Greifswald, Germany

[41] Maritime Univ Szczecin, Fac Marine Engn, Szczecin, Poland

[42] Inst Nucl Phys, Krakow, Poland

[43] CAS, Inst Plasma Phys, Prague, Czech Republic

[44] Ecole Polytech Fed Lausanne, SPC, Lausanne, Switzerland

[45] Univ Wisconsin, Madison, WI USA

[46] Lviv Polytech Natl Univ, Magnet Sensor Lab, Lvov, Ukraine

[47] Princeton Plasma Phys Lab, POB 451, Princeton, NJ 08543 USA

[48] Forschungszentrum Julich GmbH, Inst Energie & Klimaforsch, TEC Partner, Julich, Germany

[49] Univ Cote Azur, CNRS, INRIA, LJAD, Nice, France

[50] Rudjer Boskovic Inst, Zagreb, Croatia

来源：

NATURE PHYSICS | 2022年 / 18卷 / 07期

关键词：

TRANSPORT; PHYSICS; CONFINEMENT; SIMULATION;

D O I：

10.1038/s41567-022-01626-8

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Alpha particles with energies on the order of megaelectronvolts will be the main source of plasma heating in future magnetic confinement fusion reactors. Instead of heating fuel ions, most of the energy of alpha particles is transferred to electrons in the plasma. Furthermore, alpha particles can also excite Alfvenic instabilities, which were previously considered to be detrimental to the performance of the fusion device. Here we report improved thermal ion confinement in the presence of megaelectronvolts ions and strong fast ion-driven Alfvenic instabilities in recent experiments on the Joint European Torus. Detailed transport analysis of these experiments reveals turbulence suppression through a complex multi-scale mechanism that generates large-scale zonal flows. This holds promise for more economical operation of fusion reactors with dominant alpha particle heating and ultimately cheaper fusion electricity.

引用

页码：776 / +

页数：14

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