Determination of tungsten sources in the JET-ILW divertor by spectroscopic imaging in the presence of a strong plasma continuum

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dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorHuber, A.en_US
dc.contributor.authorBrezinsek, S.en_US
dc.contributor.authorKirschner, A.en_US
dc.contributor.authorStröm, P.en_US
dc.contributor.authorSergienko, G.en_US
dc.contributor.authorHuber, V.en_US
dc.contributor.authorBorodkina, I.en_US
dc.contributor.authorDouai, D.en_US
dc.contributor.authorJachmich, S.en_US
dc.contributor.authorLinsmeier, C. H.en_US
dc.contributor.authorLomanowski, B.en_US
dc.contributor.authorMatthews, G. F.en_US
dc.contributor.authorMertens, P. H.en_US
dc.contributor.author, JET Contributorsen_US
dc.contributor.departmentDepartment of Applied Physicsen
dc.contributor.organizationForschungszentrum Jülichen_US
dc.contributor.organizationKTH Royal Institute of Technologyen_US
dc.contributor.organizationFrench Alternative Energies and Atomic Energy Commissionen_US
dc.contributor.organizationRoyal Military Academyen_US
dc.contributor.organizationCulham Science Centreen_US
dc.date.accessioned2019-04-02T06:51:46Z
dc.date.available2019-04-02T06:51:46Z
dc.date.issued2019-01-01en_US
dc.description| openaire: EC/H2020/633053/EU//EUROfusion
dc.description.abstractThe identification of the sources of atomic tungsten and the measurement of their radiation distribution in front of all plasma-facing components has been performed in JET with the help of two digital cameras with the same two-dimensional view, equipped with interference filters of different bandwidths centred on the W I (400.88 nm) emission line. A new algorithm for the subtraction of the continuum radiation was successfully developed and is now used to evaluate the W erosion even in the inner divertor region where the strong recombination emission is dominating over the tungsten emission. Analysis of W sputtering and W redistribution in the divertor by video imaging spectroscopy with high spatial resolution for three different magnetic configurations was performed. A strong variation of the emission of the neutral tungsten in toroidal direction and corresponding W erosion has been observed. It correlates strongly with the wetted area with a maximal W erosion at the edge of the divertor tile.en
dc.description.versionPeer revieweden
dc.format.extent7
dc.format.mimetypeapplication/pdfen_US
dc.identifier.citationHuber, A, Brezinsek, S, Kirschner, A, Ström, P, Sergienko, G, Huber, V, Borodkina, I, Douai, D, Jachmich, S, Linsmeier, C H, Lomanowski, B, Matthews, G F, Mertens, P H & JET Contributors 2019, 'Determination of tungsten sources in the JET-ILW divertor by spectroscopic imaging in the presence of a strong plasma continuum', Nuclear Materials and Energy, vol. 18, pp. 118-124. https://doi.org/10.1016/j.nme.2018.12.009en
dc.identifier.doi10.1016/j.nme.2018.12.009en_US
dc.identifier.issn2352-1791
dc.identifier.otherPURE UUID: 0801ec01-c2d8-464f-8d0a-53cd4ffcb294en_US
dc.identifier.otherPURE ITEMURL: https://research.aalto.fi/en/publications/0801ec01-c2d8-464f-8d0a-53cd4ffcb294en_US
dc.identifier.otherPURE LINK: http://www.scopus.com/inward/record.url?scp=85058552880&partnerID=8YFLogxK
dc.identifier.otherPURE FILEURL: https://research.aalto.fi/files/32684470/1_s2.0_S2352179118301406_main.pdfen_US
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/37259
dc.identifier.urnURN:NBN:fi:aalto-201904022390
dc.language.isoenen
dc.publisherElsevier
dc.relationinfo:eu-repo/grantAgreement/EC/H2020/633053/EU//EUROfusionen_US
dc.relation.ispartofseriesNuclear Materials and Energyen
dc.relation.ispartofseriesVolume 18, pp. 118-124en
dc.rightsopenAccessen
dc.subject.keywordJET-ILWen_US
dc.subject.keywordPFCen_US
dc.subject.keywordPSIen_US
dc.subject.keywordTungsten erosionen_US
dc.subject.keywordTungsten imaging spectroscopyen_US
dc.subject.keywordW Divertoren_US
dc.titleDetermination of tungsten sources in the JET-ILW divertor by spectroscopic imaging in the presence of a strong plasma continuumen
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi
dc.type.versionpublishedVersion

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