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Simultaneous detection of neoclassical tearing mode and electron cyclotron current drive locations using electron cyclotron emission in DIII-D

Author(s): Nelson, AO; La Haye, RJ; Austin, ME; Welander, AS; Kolemen, Egemen

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DC FieldValueLanguage
dc.contributor.authorNelson, AO-
dc.contributor.authorLa Haye, RJ-
dc.contributor.authorAustin, ME-
dc.contributor.authorWelander, AS-
dc.contributor.authorKolemen, Egemen-
dc.date.accessioned2021-10-08T20:19:48Z-
dc.date.available2021-10-08T20:19:48Z-
dc.date.issued2019en_US
dc.identifier.citationNelson, AO, La Haye, RJ, Austin, ME, Welander, AS, Kolemen, E. (2019). Simultaneous detection of neoclassical tearing mode and electron cyclotron current drive locations using electron cyclotron emission in DIII-D. Fusion Engineering and Design, 141 (25 - 29. doi:10.1016/j.fusengdes.2019.02.089en_US
dc.identifier.urihttp://arks.princeton.edu/ark:/88435/pr1mw0s-
dc.description.abstractAccurate real-time measurements of magnetic island and electron cyclotron current drive (ECCD) locations are essential for efficient suppression of the neoclassical tearing mode (NTM). To determine these locations, many control systems rely on motional Stark effect constrained equilibria reconstruction and real-time Thomson scattering with TORBEAM current drive evaluation and therefore require time-intensive cross-calibration of at least two different diagnostics. Here we present a simpler, proof-of-concept analysis that uses only a single diagnostic (a radial array electron cyclotron emission radiometer) for the simultaneous determination of both the radial position of a magnetic island and the deposition location of ECCD. Measurements are compared with the modified Rutherford equation to demonstrate the effect of ECCD alignment on NTM suppression.en_US
dc.format.extent25 - 29en_US
dc.language.isoen_USen_US
dc.relation.ispartofFusion Engineering and Designen_US
dc.rightsAuthor's manuscripten_US
dc.titleSimultaneous detection of neoclassical tearing mode and electron cyclotron current drive locations using electron cyclotron emission in DIII-Den_US
dc.typeJournal Articleen_US
dc.identifier.doidoi:10.1016/j.fusengdes.2019.02.089-
pu.type.symplectichttp://www.symplectic.co.uk/publications/atom-terms/1.0/journal-articleen_US

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