Comparison of 2D simulations of detached divertor plasmas with divertor Thomson measurements in the DIII-D tokamak

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Rognlien, T. D.
dc.contributor.author McLean, A. G.
dc.contributor.author Fenstermacher, M. E.
dc.contributor.author Groth, M.
dc.contributor.author Jaervinen, A. E.
dc.contributor.author Joseph, I.
dc.contributor.author Lasnier, C. J.
dc.contributor.author Meyer, W.
dc.contributor.author Moser, A.
dc.contributor.author Porter, G. D.
dc.contributor.author Umansky, M. V.
dc.date.accessioned 2017-05-11T09:14:45Z
dc.date.available 2017-05-11T09:14:45Z
dc.date.issued 2017
dc.identifier.citation Rognlien , T D , McLean , A G , Fenstermacher , M E , Groth , M , Jaervinen , A E , Joseph , I , Lasnier , C J , Meyer , W , Moser , A , Porter , G D & Umansky , M V 2017 , ' Comparison of 2D simulations of detached divertor plasmas with divertor Thomson measurements in the DIII-D tokamak ' Nuclear Materials and Energy . DOI: 10.1016/j.nme.2016.12.002 en
dc.identifier.issn 2352-1791
dc.identifier.other PURE UUID: efb305d5-b273-44fd-9c85-7ed68e95937c
dc.identifier.other PURE ITEMURL: https://research.aalto.fi/en/publications/comparison-of-2d-simulations-of-detached-divertor-plasmas-with-divertor-thomson-measurements-in-the-diiid-tokamak(efb305d5-b273-44fd-9c85-7ed68e95937c).html
dc.identifier.other PURE LINK: http://www.scopus.com/inward/record.url?scp=85010869462&partnerID=8YFLogxK
dc.identifier.other PURE FILEURL: https://research.aalto.fi/files/15916603/1_s2.0_S2352179116302423_main.pdf
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/25955
dc.description.abstract A modeling study is reported using new 2D data from DIII-D tokamak divertor plasmas and improved 2D transport model that includes large cross-field drifts for the numerically difficult low anomalous transport regime associated with the H-mode. The data set, which spans a range of plasma densities for both forward and reverse toroidal magnetic field (Bt ), is provided by divertor Thomson scattering (DTS). Measurements utilizing X-point sweeping give corresponding 2D profiles of electron temperature (Te ) and density (ne ) across both divertor legs for individual discharges. The simulations focus on the open magnetic field-line regions, though they also include a small region of closed field lines. The calculations show the same features of in/out divertor plasma asymmetries as measured in the experiment, with the normal Bt direction (ion ∇. B drift toward the X-point) having higher ne and lower Te in the inner divertor leg than outer. Corresponding emission data for total radiated power shows a strong inner-divertor/outer-divertor asymmetry that is reproduced by the simulations. These 2D UEDGE transport simulations are enabled for steep-gradient H-mode conditions by newly implemented algorithms to control isolated grid-scale irregularities. en
dc.format.extent 7
dc.format.mimetype application/pdf
dc.language.iso en en
dc.relation.ispartofseries Nuclear Materials and Energy en
dc.rights openAccess en
dc.subject.other Nuclear and High Energy Physics en
dc.subject.other Materials Science (miscellaneous) en
dc.subject.other Nuclear Energy and Engineering en
dc.subject.other 114 Physical sciences en
dc.title Comparison of 2D simulations of detached divertor plasmas with divertor Thomson measurements in the DIII-D tokamak en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department Lawrence Livermore National Laboratory
dc.contributor.department Department of Applied Physics
dc.contributor.department General Atomics
dc.subject.keyword 00-01
dc.subject.keyword 99-00
dc.subject.keyword DIII-D
dc.subject.keyword Divertor modeling
dc.subject.keyword UEDGE
dc.subject.keyword Nuclear and High Energy Physics
dc.subject.keyword Materials Science (miscellaneous)
dc.subject.keyword Nuclear Energy and Engineering
dc.subject.keyword 114 Physical sciences
dc.identifier.urn URN:NBN:fi:aalto-201705114330
dc.identifier.doi 10.1016/j.nme.2016.12.002
dc.type.version proof


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