Numerical modelling of an enhanced perpendicular transport regime in the scrape-off layer of ASDEX Upgrade

dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorZito, A.en_US
dc.contributor.authorWischmeier, M.en_US
dc.contributor.authorCarralero, D.en_US
dc.contributor.authorManz, P.en_US
dc.contributor.authorPérez, I. Paradelaen_US
dc.contributor.authorPassoni, M.en_US
dc.contributor.departmentDepartment of Applied Physicsen
dc.contributor.organizationMax-Planck-Institut für Plasmaphysiken_US
dc.contributor.organizationCentro de Investigaciones Energéticas, Medioambientales y Tecnológicas - CIEMATen_US
dc.contributor.organizationPolytechnic University of Milanen_US
dc.date.accessioned2021-07-01T13:05:45Z
dc.date.available2021-07-01T13:05:45Z
dc.date.issued2021-07en_US
dc.descriptionPublisher Copyright: © Max-Planck-Institut fuer Plasmaphysik.
dc.description.abstractA desirable scenario for future fusion devices is one in which dissipative processes in the scrape-off layer (SOL) are maximized, aiming to detach the divertor plasma. The access to such a regime in current devices is thought to be correlated to the increase of the perpendicular particle transport in the SOL. In this work we investigated numerically how increasing perpendicular transport globally affects the SOL plasma through the SOLPS-ITER code package. For this we modelled one L-mode discharge, performed at the ASDEX Upgrade tokamak, trying to obtain the most accurate fit to the experimental data at the outer midplane. Studying the plasma solutions and analyzing the resulting momentum and power balances in the SOL allowed to characterize how enhancing perpendicular SOL transport leads to the experimentally observed phenomena, i.e. the formation of a density shoulder at the midplane and the partial detachment of the divertor plasma. The results suggest that strong momentum losses caused by the increase of transport are able to explain the qualitatively observed detachment in the modelled discharge. The concurrent enhanced ionization of neutrals resulting from divertor recycling, triggered by an increase of radial energy transport in the SOL, can be invoked as a cause for the shoulder formation.en
dc.description.versionPeer revieweden
dc.format.mimetypeapplication/pdfen_US
dc.identifier.citationZito, A, Wischmeier, M, Carralero, D, Manz, P, Pérez, I P & Passoni, M 2021, ' Numerical modelling of an enhanced perpendicular transport regime in the scrape-off layer of ASDEX Upgrade ', Plasma Physics and Controlled Fusion, vol. 63, no. 7, 075003 . https://doi.org/10.1088/1361-6587/abfcb6en
dc.identifier.doi10.1088/1361-6587/abfcb6en_US
dc.identifier.issn0741-3335
dc.identifier.issn1361-6587
dc.identifier.otherPURE UUID: 29965e30-5021-4dee-a9d0-83b85b6c03e0en_US
dc.identifier.otherPURE ITEMURL: https://research.aalto.fi/en/publications/29965e30-5021-4dee-a9d0-83b85b6c03e0en_US
dc.identifier.otherPURE LINK: http://www.scopus.com/inward/record.url?scp=85107293232&partnerID=8YFLogxKen_US
dc.identifier.otherPURE FILEURL: https://research.aalto.fi/files/65046827/Zito_2021_Plasma_Phys._Control._Fusion_63_075003.pdfen_US
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/108579
dc.identifier.urnURN:NBN:fi:aalto-202107017833
dc.language.isoenen
dc.publisherIOP Publishing Ltd.
dc.relation.ispartofseriesPlasma Physics and Controlled Fusionen
dc.relation.ispartofseriesVolume 63, issue 7en
dc.rightsopenAccessen
dc.titleNumerical modelling of an enhanced perpendicular transport regime in the scrape-off layer of ASDEX Upgradeen
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi
dc.type.versionpublishedVersion
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