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dc.contributor.authorLoarte, A.
dc.contributor.authorReinke, M. L.
dc.contributor.authorPolevoi, A. R.
dc.contributor.authorHosokawa, M.
dc.contributor.authorKöchl, F.
dc.contributor.authorPütterich, T.
dc.contributor.authorDux, R.
dc.contributor.authorZhogolev, V. E.
dc.contributor.authorChilenski, Mark Alan
dc.contributor.authorHoward, Nathaniel Thomas
dc.contributor.authorHubbard, Amanda E
dc.contributor.authorHughes Jr, Jerry
dc.contributor.authorRice, John E
dc.contributor.authorWalk Jr, John R
dc.date.accessioned2017-09-13T15:33:46Z
dc.date.available2017-09-13T15:33:46Z
dc.date.issued2015-05
dc.date.submitted2014-11
dc.identifier.issn1070-664X
dc.identifier.issn1089-7674
dc.identifier.urihttp://hdl.handle.net/1721.1/111188
dc.description.abstractExperiments in Alcator C-Mod tokamak plasmas in the Enhanced D-alpha H-mode regime with ITER-like mid-radius plasma density peaking and Ion Cyclotron Resonant heating, in which tungsten is introduced by the laser blow-off technique, have demonstrated that accumulation of tungsten in the central region of the plasma does not take place in these conditions. The measurements obtained are consistent with anomalous transport dominating tungsten transport except in the central region of the plasma where tungsten transport is neoclassical, as previously observed in other devices with dominant neutral beam injection heating, such as JET and ASDEX Upgrade. In contrast to such results, however, the measured scale lengths for plasma temperature and density in the central region of these Alcator C-Mod plasmas, with density profiles relatively flat in the core region due to the lack of core fuelling, are favourable to prevent inter and intra sawtooth tungsten accumulation in this region under dominance of neoclassical transport. Simulations of ITER H-mode plasmas, including both anomalous (modelled by the Gyro-Landau-Fluid code GLF23) and neoclassical transport for main ions and tungsten and with density profiles of similar peaking to those obtained in Alcator C-Mod show that accumulation of tungsten in the central plasma region is also unlikely to occur in stationary ITER H-mode plasmas due to the low fuelling source by the neutral beam injection (injection energy ∼ 1 MeV), which is in good agreement with findings in the Alcator C-Mod experiments.en_US
dc.description.sponsorshipUnited States. Department of Energy (DE-FC02-99ER54512)en_US
dc.language.isoen_US
dc.publisherAmerican Institute of Physics (AIP)en_US
dc.relation.isversionofhttp://dx.doi.org/10.1063/1.4921253en_US
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.en_US
dc.sourceMIT Web Domainen_US
dc.titleTungsten impurity transport experiments in Alcator C-Mod to address high priority research and development for ITERen_US
dc.typeArticleen_US
dc.identifier.citationLoarte, A. et al. “Tungsten Impurity Transport Experiments in Alcator C-Mod to Address High Priority Research and Development for ITER.” Physics of Plasmas 22, 5 (May 2015): 056117 © 2015 AIP Publishingen_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Nuclear Science and Engineeringen_US
dc.contributor.departmentMassachusetts Institute of Technology. Plasma Science and Fusion Centeren_US
dc.contributor.mitauthorChilenski, Mark Alan
dc.contributor.mitauthorHoward, Nathaniel Thomas
dc.contributor.mitauthorHubbard, Amanda E
dc.contributor.mitauthorHughes Jr, Jerry
dc.contributor.mitauthorRice, John E
dc.contributor.mitauthorWalk Jr, John R
dc.relation.journalPhysics of Plasmasen_US
dc.eprint.versionAuthor's final manuscripten_US
dc.type.urihttp://purl.org/eprint/type/JournalArticleen_US
eprint.statushttp://purl.org/eprint/status/PeerRevieweden_US
dspace.orderedauthorsLoarte, A.; Reinke, M. L.; Polevoi, A. R.; Hosokawa, M.; Chilenski, M.; Howard, N.; Hubbard, A.; Hughes, J. W.; Rice, J. E.; Walk, J.; Köchl, F.; Pütterich, T.; Dux, R.; Zhogolev, V. E.en_US
dspace.embargo.termsNen_US
dc.identifier.orcidhttps://orcid.org/0000-0002-3616-8484
dc.identifier.orcidhttps://orcid.org/0000-0002-0026-6939
dc.identifier.orcidhttps://orcid.org/0000-0001-8319-5971
dc.identifier.orcidhttps://orcid.org/0000-0001-8324-4227
mit.licensePUBLISHER_POLICYen_US


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