Observation of alpha-particles in recent D-T experiments on JET

被引：8

作者：

Kiptily, V. G. ^{[1
]}

Challis, C. D. ^{[1
]}

Dumont, R. ^{[2
]}

Fitzgerald, M. ^{[1
]}

Garcia, J. ^{[2
]}

Garzotti, L. ^{[1
]}

Ghani, Z. ^{[1
]}

Hobirk, J. ^{[3
]}

Jacquet, P. ^{[1
]}

Kappatou, A. ^{[3
]}

Keeling, D. ^{[1
]}

Kazakov, Ye. ^{[4
]}

Mantica, P. ^{[5
]}

Mantsinen, M. J. ^{[6
,7
]}

Sharapov, S. E. ^{[1
]}

Solano, E. R. ^{[8
]}

Van Eester, D. ^{[4
]}

Bonofiglo, P. J. ^{[9
]}

Craciunescu, T. ^{[10
]}

Dal Molin, A. ^{[11
]}

Eriksson, J. ^{[12
]}

Goloborodko, V. ^{[13
]}

Iliasova, M. V. ^{[14
]}

Khilkevitch, E. M. ^{[14
]}

King, D. ^{[1
]}

Lengar, I. ^{[15
]}

Nocente, M. ^{[16
]}

Menmuir, S. ^{[1
]}

Podesta, M. ^{[9
]}

Poradzinski, M. ^{[1
]}

Rigamonti, D. ^{[11
]}

Rivero-Rodriguez, J. ^{[1
,17
]}

Stancar, Z. ^{[1
,15
]}

Shevelev, A. E. ^{[14
]}

Siren, P. ^{[1
]}

Sun, H. ^{[1
]}

Taylor, D. M. ^{[1
]}

Tardocchi, M. ^{[16
]}

Beaumont, P. ^{[1
]}

Belli, F. ^{[18
]}

Cecil, F. E. ^{[19
]}

Coelho, R. ^{[20
]}

Curuia, M. ^{[21
]}

Garcia-Munoz, M. ^{[16
]}

Joffrin, E. ^{[2
]}

Lowry, C. ^{[1
]}

Lennholm, M. ^{[1
]}

Lerche, E. ^{[4
]}

Maggi, C. F. ^{[1
]}

Mailloux, J. ^{[1
]}

机构：

[1] United Kingdom Atom Energy Author, Abingdon OX14 3DB, Oxon, England

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

[3] Max Planck Inst Plasma Phys, Boltzmannstr 2, D-85748 Garching, Germany

[4] Assoc EUROFUS Belgian State, LPP ERM, KMS, TEC Partner, Brussels, Belgium

[5] CNR, Ist Sci & Tecnol Plasmi, Milan, Italy

[6] Barcelona Supercomp Ctr, Barcelona, Spain

[7] ICREA, Pg Liuis Co 23, Barcelona 08010, Spain

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

[9] Princeton Plasma Phys Lab, Princeton, NJ 08543 USA

[10] Natl Inst Laser Plasma & Radiat Phys, Bucharest, Romania

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

[12] Uppsala Univ, Dept Phys & Astron, BOX 516, Uppsala, Sweden

[13] Kyiv Inst Nucl Res, Prospekt Nauky 47, UA-03680 Kiev, Ukraine

[14] Ioffe Physico Tech Inst, 26 Politekhnicheskaya, St Petersburg 194021, Russia

[15] Jozef Stefan Inst, Jamova 39, SI-1000 Ljubljana, Slovenia

[16] Univ Milano Bicocca, Dipartimento Fis, Milan, Italy

[17] Univ Seville, Fac Phys, FAMN Dept, Seville 41012, Spain

[18] ENEA C R Frascati, Unita Tecn Fus, Via E Fermi 45, I-00044 Frascati, Roma, Italy

[19] Colorado Sch Mines, Golden, CO 80401 USA

[20] Univ Lisbon, Inst Plasmas & Fusao Nucl, Inst Super Tecn, P-1049001 Lisbon, Portugal

[21] Natl Inst Cryogen & Isotop Technol, Bucharest, Romania

[22] Inst Plasma Phys & Laser Microfus IPPLM, Hery 23, PL-01497 Warsaw, Poland

来源：

NUCLEAR FUSION | 2024年 / 64卷 / 08期

关键词：

JET; DT-plasmas; fusion; alpha-particles; GAMMA-RAY DIAGNOSTICS; FAST-ION LOSS; NEUTRON EMISSION; BRANCHING RATIO; PLASMAS;

D O I：

10.1088/1741-4326/ad5c81

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 fusion reaction between deuterium and tritium, D(T,n)4 He is the main source of energy in future thermonuclear reactors. Alpha-particles (4 He-ions) born with an average energy of 3.5 MeV transferring energy to the thermal plasma during their slowing down, should provide the self-sustained D-T plasma burn. The adequate confinement of alpha-particles is essential to provide efficient heating of the bulk plasma and steady burning of a reactor plasma. That is why the fusion-born alpha-particle studies have been a priority task in the second D-T experiments (DTE2) on the Joint European Torus (JET) to understand the main mechanisms of their slowing down, redistribution and losses and to develop optimal plasma scenarios. JET with Be-wall and W-divertor, enhanced auxiliary heating systems and improved energetic-particle diagnostic capabilities, producing significant population of alpha-particles, provided the possibility for comprehensive studying of the alpha-particle behaviour. Selected results of the confined and lost alpha-particle measurements, evidence of alpha-particle self-heating and assessments of the fusion performance are presented in this paper giving an opportunity for further modelling and extrapolation to the International Thermonuclear Experimental Reactor and burning plasma reactors.

引用

页数：20

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