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Mechanism of Edge Localized Mode Mitigation by Resonant Magnetic Perturbations

hal.structure.identifierInstitut de Recherche sur la Fusion par confinement Magnétique [IRFM]
dc.contributor.authorBECOULET, Marina
hal.structure.identifierInstitut de Recherche sur la Fusion par confinement Magnétique [IRFM]
dc.contributor.authorORAIN, F.
dc.contributor.authorHUIJSMANS, G. T. A.
hal.structure.identifierPhysique des interactions ioniques et moléculaires [PIIM]
dc.contributor.authorPAMELA, S.
hal.structure.identifierInstitute of Plasma Physics [Praha]
dc.contributor.authorCAHYNA, P.
dc.contributor.authorHOELZL, M.
hal.structure.identifierInstitut de Recherche sur la Fusion par confinement Magnétique [IRFM]
dc.contributor.authorGARBET, X.
dc.contributor.authorFRANCK, E.
hal.structure.identifierMax-Planck-Gesellschaft
dc.contributor.authorSONNENDRÜCKER, E.
hal.structure.identifierInstitut de Recherche sur la Fusion par confinement Magnétique [IRFM]
dc.contributor.authorDIF-PRADALIER, Guilhem
hal.structure.identifierInstitut de Recherche sur la Fusion par confinement Magnétique [IRFM]
dc.contributor.authorPASSERON, C.
hal.structure.identifierInstitut de Recherche sur la Fusion par confinement Magnétique [IRFM]
dc.contributor.authorLATU, G.
hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.authorMORALES, J.
hal.structure.identifierInstitut de Recherche sur la Fusion par confinement Magnétique [IRFM]
dc.contributor.authorNARDON, E.
dc.contributor.authorFIL, Alexandre
hal.structure.identifierLaboratoire Jean Alexandre Dieudonné [LJAD]
dc.contributor.authorNKONGA, B.
hal.structure.identifierLaboratoire Jean Alexandre Dieudonné [LJAD]
dc.contributor.authorRATNANI, A.
hal.structure.identifierInstitut de Recherche sur la Fusion par confinement Magnétique [IRFM]
dc.contributor.authorGRANDGIRARD, V.
dc.date.issued2014-09
dc.identifier.issn0031-9007
dc.description.abstractEnA possible mechanism of edge localized modes (ELMs) mitigation by resonant magnetic perturbations (RMPs) is proposed based on the results of nonlinear resistive magnetohydrodynamic modeling using the JOREK code, realistic JET-like plasma parameters and an RMP spectrum of JET error-field correction coils (EFCC) with a main toroidal number n ¼ 2 were used in the simulations. Without RMPs, a large ELM relaxation is obtained mainly due to the most unstable medium-n ballooning mode. The externally imposed RMP drives nonlinearly the modes coupled to n ¼ 2 RMP which produce small multimode relaxations, mitigated ELMs. The modes driven by RMPs exhibit a tearinglike structure and produce additional islands. Mitigated ELMs deposit energy into the divertor mainly in the structures ("footprints") created by n ¼ 2 RMPs, however, slightly modulated by other nonlinearly driven even harmonics. The divertor power flux during a ELM phase mitigated by RMPs is reduced almost by a factor of 10. The mechanism of ELM mitigation by RMPs proposed here reproduces generic features of high collisionality RMP experiments, where large ELMs are replaced by small, much more frequent ELMs or magnetic turbulence. Total ELM suppression was also demonstrated in modeling at higher RMP amplitude.
dc.description.sponsorshipAdvanced Numeric for Elm's: Models and Optimized Strategies.
dc.language.isoen
dc.publisherAmerican Physical Society
dc.title.enMechanism of Edge Localized Mode Mitigation by Resonant Magnetic Perturbations
dc.typeArticle de revue
dc.identifier.doi10.1103/PhysRevLett.113.115001
dc.subject.halPhysique [physics]
dc.subject.halScience non linéaire [physics]
bordeaux.journalPhysical Review Letters
bordeaux.volume113
bordeaux.issue11
bordeaux.peerReviewedoui
hal.identifierhal-02184565
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02184565v1
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