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

Creators: Domínguez Palacios Durán, Jesús José; García Muñoz, Manuel; Toscano Jiménez, Manuel; Liu, Y. Q.; Mancini, Alessio; Cruz Zabala, Diego José; Berkery, J. W.; Labbate, J. A.; Viezzer, Eleonora; Oyola Domínguez, Pablo; Futatani, S.

Others:: Universidad de Sevilla. Departamento de Física Aplicada III; Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear; Ministerio de Ciencia e Innovación (MICIN). España; European Union (UE); Junta de Andalucía

Description

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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Spanish Ministry of Science (Grant Nos. FPU17/05703 and PID2020-116822RBI00)

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European Research Council (ERC) (Grant Agreement No. 805162)

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European Regional Development Fund, Junta de Andalucía P18-FR-3812

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

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