MHD stability analysis against pressure and current-driven modes in the SMall Aspect Ratio Tokamak

Dominguez-Palacios, J.; Garcia-Munoz, M.; Toscano-Jimenez, M.; Liu, Y. Q.; Mancini, A.; Cruz-Zabala, D. J.; Berkery, J. W.; Labbate, J. A.; Parisi, J.; Todo, Y.; Reyner-Viñolas, A.; Podestà, M.; Viezzer, E.; Oyola, P.; Futatani, S.

doi:10.1088/1741-4326/ad7fd3

Title: MHD stability analysis against pressure and current-driven modes in the SMall Aspect Ratio Tokamak

Journal Article · 08 October 2024 · Nuclear Fusion

DOI: https://doi.org/10.1088/1741-4326/ad7fd3 · OSTI ID:2472935

^[1];

^[2]; Toscano-Jimenez, M. ^[2];

^[3]; Mancini, A. ^[2];

^[2];

^[4]; Labbate, J. A. ^[5];

^[4]; Todo, Y. ^[6]; Reyner-Viñolas, A. ^[2]; Podestà, M. ^[7];

^[2];

^[8]

University of Seville (Spain); Fiat Lux, San Diego, CA (United States)
University of Seville (Spain)
General Atomics, San Diego, CA (United States)
Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)
Univ. of Maryland, College Park, MD (United States)
National Inst. of Natural Sciences (NINS), Toki (Japan)
Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States); Ecole Polytechnique Federale Lausanne (EPFL) (Switzerland)
Universitat Politècnica de Catalunya, Barcelona (Spain)

Linear magnetohydrodynamic (MHD) simulations for the SMall Aspect Ratio Tokamak (SMART) have been carried out for the first time, for both positive (PT) and negative triangularity (NT) shaped plasmas using the MARS-F code. The MHD stability of projected SMART plasmas against internal kinks, infernal modes and edge peeling-ballooning modes have been analyzed for a wide range of realistic equilibria. A stabilization of internal kinks and infernal modes is observed when increasing the safety factor profile and reducing plasma beta. PT shaped plasmas are more stable against both internal kinks and infernal modes than their counterpart NT shaped plasmas. Toroidal flows have little impact on the MHD stability of the internal kinks, but they have a strong stabilizing effect on infernal modes, which can be further mitigated in NT shaped plasmas. The MHD stability of peeling-ballooning modes is reduced in NT shaped plasmas, as observed in conventional tokamaks.

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Research Organization:: Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)

Sponsoring Organization:: USDOE; Ministry of Science, Innovation and Universities (MICIU)

Grant/Contract Number:: AC02-09CH11466

OSTI ID:: 2472935

Journal Information:: Nuclear Fusion, Journal Name: Nuclear Fusion Journal Issue: 12 Vol. 64; ISSN 0029-5515

Publisher:: IOP ScienceCopyright Statement

Country of Publication:: United States

Language:: English

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70 PLASMA PHYSICS AND FUSION TECHNOLOGY
MHD
SMART
negative triangularity

Title: MHD stability analysis against pressure and current-driven modes in the SMall Aspect Ratio Tokamak

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