Achievement of Reactor-Relevant Performance in Negative Triangularity Shape in the DIII-D Tokamak

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dc.contributor.authorAustin, M. E.ko
dc.contributor.authorMarinoni, A.ko
dc.contributor.authorWalker, M. L.ko
dc.contributor.authorBrookman, M. W.ko
dc.contributor.authordeGrassie, J. S.ko
dc.contributor.authorHyatt, A. W.ko
dc.contributor.authorMcKee, G. R.ko
dc.contributor.authorPetty, C. C.ko
dc.contributor.authorRhodes, T. L.ko
dc.contributor.authorSmith, S. P.ko
dc.contributor.authorSung, Choongkiko
dc.contributor.authorThome, K. E.ko
dc.contributor.authorTurnbull, A. D.ko
dc.date.accessioned2020-03-19T02:25:01Z-
dc.date.available2020-03-19T02:25:01Z-
dc.date.created2020-03-05-
dc.date.created2020-03-05-
dc.date.issued2019-03-
dc.identifier.citationPHYSICAL REVIEW LETTERS, v.122, no.11-
dc.identifier.issn0031-9007-
dc.identifier.urihttp://hdl.handle.net/10203/272652-
dc.description.abstractPlasma discharges with a negative triangularity (delta = -0.4) shape have been created in the DIII-D tokamak with a significant normalized beta (beta(N) = 2.7) and confinement characteristic of the high confinement mode (H-98y2 = 1.2) despite the absence of an edge pressure pedestal and no edge localized modes (ELMs). These inner-wall-limited plasmas have a similar global performance as a positive triangularity (delta = +0.4) ELMing H-mode discharge with the same plasma current, elongation and cross sectional area. For cases both of dominant electron cyclotron heating with T-e/T-i > 1 and dominant neutral beam injection heating with T-e/T-i = 1, turbulent fluctuations over radii 0.5 < rho < 0.9 were reduced by 10-50% in the negative triangularity shape compared to the matching positive triangularity shape, depending on the radius and conditions.-
dc.languageEnglish-
dc.publisherAMER PHYSICAL SOC-
dc.titleAchievement of Reactor-Relevant Performance in Negative Triangularity Shape in the DIII-D Tokamak-
dc.typeArticle-
dc.identifier.wosid000461920500003-
dc.identifier.scopusid2-s2.0-85063303318-
dc.type.rimsART-
dc.citation.volume122-
dc.citation.issue11-
dc.citation.publicationnamePHYSICAL REVIEW LETTERS-
dc.identifier.doi10.1103/PhysRevLett.122.115001-
dc.contributor.localauthorSung, Choongki-
dc.contributor.nonIdAuthorAustin, M. E.-
dc.contributor.nonIdAuthorMarinoni, A.-
dc.contributor.nonIdAuthorWalker, M. L.-
dc.contributor.nonIdAuthorBrookman, M. W.-
dc.contributor.nonIdAuthordeGrassie, J. S.-
dc.contributor.nonIdAuthorHyatt, A. W.-
dc.contributor.nonIdAuthorMcKee, G. R.-
dc.contributor.nonIdAuthorPetty, C. C.-
dc.contributor.nonIdAuthorRhodes, T. L.-
dc.contributor.nonIdAuthorSmith, S. P.-
dc.contributor.nonIdAuthorThome, K. E.-
dc.contributor.nonIdAuthorTurnbull, A. D.-
dc.description.isOpenAccessN-
dc.type.journalArticleArticle-
dc.subject.keywordPlusCONFINEMENT-
dc.subject.keywordPlusPLASMAS-
dc.subject.keywordPlusLIMITS-
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