MHD stability analysis against pressure and current-driven modes in the SMall Aspect Ratio Tokamak
Year: 2024
Type: article
Abstract: 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.
Source: Nuclear Fusion
Institutions: Consejo Superior de Investigaciones Científicas, Centro Nacional de Aceleradores, Universidad de Sevilla, General Atomics (United States), Princeton Plasma Physics Laboratory, University of Maryland, College Park, National Institutes of Natural Sciences, National Institute for Fusion Science, Universitat Politècnica de Catalunya
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,470
Funders: U.S. Department of Energy, Ministerio de Ciencia, Innovación y Universidades, EUROfusion, Consejería de Transformación Económica, Industria, Conocimiento y Universidades, European Commission, Junta de Andalucía, Euratom Research and Training Programme, National Institutes of Natural Sciences, European Regional Development Fund, Basic Energy Sciences, National Institute for Fusion Science, H2020 European Research Council, Princeton Plasma Physics Laboratory
Awards: G115085052, G157624241, Implementation of activities described in the Roadmap to Fusion during Horizon Europe through a joint programme of the members of the EUROfusion consortium, G2293481551, G3165681204, G3452984486, G3562821882, G434337789, G5172252545, G5344189563, G6112334466, G6384555317, G6397180327, G6429894085, G654012778, G6619328984, Taming the particle transport in magnetized plasmas via perturbative fields
OpenAlex ID: W4402889826