NSTX-U research advancing the physics of spherical tokamaks

被引：17

作者：

Berkery, J. W. ^{[1
]}

Adebayo-Ige, P. O. ^{[2
]}

Al Khawaldeh, H. ^{[3
]}

Avdeeva, G. ^{[4
]}

Baek, S-g. ^{[5
]}

Banerjee, S. ^{[1
]}

Barada, K. ^{[6
]}

Battaglia, D. J. ^{[7
]}

Bell, R. E. ^{[1
]}

Belli, E. ^{[4
]}

Belova, E. V. ^{[1
]}

Bertelli, N. ^{[1
]}

Bisai, N. ^{[8
]}

Bonoli, P. T. ^{[5
]}

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

Butt, J. ^{[9
]}

Candy, J. ^{[4
]}

Chang, C. S. ^{[1
]}

Clauser, C. F. ^{[5
]}

Corona Rivera, L. D. ^{[1
]}

Curie, M. ^{[9
]}

de Vries, P. C. ^{[10
]}

Diab, R. ^{[5
]}

Diallo, A. ^{[1
]}

Dominski, J. ^{[1
]}

Duarte, V. N. ^{[1
]}

Emdee, E. D. ^{[1
]}

Ferraro, N. M. ^{[1
]}

Fitzpatrick, R. ^{[11
]}

Foley, E. L. ^{[12
]}

Fredrickson, E. ^{[1
]}

Galante, M. E. ^{[12
]}

Gan, K. F. ^{[2
]}

Gerhardt, S. ^{[1
]}

Goldston, R. ^{[1
]}

Guttenfelder, W. ^{[1
,13
]}

Hager, R. ^{[1
]}

Hanson, M. O. ^{[7
]}

Jardin, S. C. ^{[1
]}

Jenkins, T. G. ^{[14
]}

Kaye, S. M. ^{[1
]}

Khodak, A. ^{[1
]}

Kinsey, J. ^{[15
]}

Kleiner, A. ^{[1
]}

Kolemen, E. ^{[9
]}

Ku, S. ^{[1
]}

Lampert, M. ^{[1
]}

Leard, B. ^{[3
]}

LeBlanc, B. P. ^{[1
]}

Lestz, J. B. ^{[4
]}

机构：

[1] Princeton Plasma Phys Lab, Princeton, NJ 08536 USA

[2] Univ Tennessee, Knoxville, TN USA

[3] Lehigh Univ, Bethlehem, PA USA

[4] Gen Atom, San Diego, CA USA

[5] MIT, Cambridge, MA USA

[6] Univ Calif Los Angeles, Los Angeles, CA USA

[7] Commonwealth Fus Syst, Devens, MA USA

[8] Inst Plasma Res Bhat, Gandhinagar, India

[9] Princeton Univ, Princeton, NJ USA

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

[11] Univ Texas Austin, Austin, TX USA

[12] Nova Photon, Princeton, NJ USA

[13] Type One Energy, Madison, WI USA

[14] Tech X Corp, Boulder, CO USA

[15] CompX, Del Mar, CA USA

[16] Seoul Natl Univ, Seoul, South Korea

[17] United Kingdom Atom Energy Author, Abingdon, Oxon, England

[18] Columbia Univ, Columbia, NY USA

[19] Univ Wisconsin, Madison, WI USA

[20] Lawrence Livermore Natl Lab, Livermore, CA USA

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

[22] Tokamak Energy Ltd, Milton Pk, Abingdon, England

[23] Dalian Univ Technol, Dalian, Peoples R China

来源：

NUCLEAR FUSION | 2024年 / 64卷 / 11期

关键词：

spherical tokamak; magnetic confinement fusion; NSTX; NSTX-U; PLASMA; SIMULATION; DESIGN;

D O I：

10.1088/1741-4326/ad3092

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 objectives of NSTX-U research are to reinforce the advantages of STs while addressing the challenges. To extend confinement physics of low-A, high beta plasmas to lower collisionality levels, understanding of the transport mechanisms that set confinement performance and pedestal profiles is being advanced through gyrokinetic simulations, reduced model development, and comparison to NSTX experiment, as well as improved simulation of RF heating. To develop stable non-inductive scenarios needed for steady-state operation, various performance-limiting modes of instability were studied, including MHD, tearing modes, and energetic particle instabilities. Predictive tools were developed, covering disruptions, runaway electrons, equilibrium reconstruction, and control tools. To develop power and particle handling techniques to optimize plasma exhaust in high performance scenarios, innovative lithium-based solutions are being developed to handle the very high heat flux levels that the increased heating power and compact geometry of NSTX-U will produce, and will be seen in future STs. Predictive capabilities accounting for plasma phenomena, like edge harmonic oscillations, ELMs, and blobs, are being tested and improved. In these ways, NSTX-U researchers are advancing the physics understanding of ST plasmas to maximize the benefit that will be gained from further NSTX-U experiments and to increase confidence in projections to future devices.

引用

页数：18

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