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

The 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 bandwid...

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Autores: Huber, A., Brezinsek, S., Kirschner, A., Ström, P., Sergienko, G., Jet Contributors, García Muñoz, Manuel
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2019
País:España
Institución:Universidad de Sevilla (US)
Repositorio:idUS. Depósito de Investigación de la Universidad de Sevilla
OAI Identifier:oai:idus.us.es:11441/99063
Acceso en línea:https://hdl.handle.net/11441/99063
https://doi.org/10.1016/j.nme.2018.12.009
Access Level:acceso abierto
Palabra clave:Tungsten erosion
Tungsten imaging spectroscopy
W Divertor
JET-ILW
PSI
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spelling Determination of tungsten sources in the JET-ILW divertor by spectroscopic imaging in the presence of a strong plasma continuumHuber, A.Brezinsek, S.Kirschner, A.Ström, P.Sergienko, G.Jet ContributorsGarcía Muñoz, ManuelTungsten erosionTungsten imaging spectroscopyW DivertorJET-ILWPSIThe 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.EURATOM 633053ElsevierFísica Atómica, Molecular y NuclearRNM138: Física Nuclear Aplicada2019info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfapplication/pdfhttps://hdl.handle.net/11441/99063https://doi.org/10.1016/j.nme.2018.12.009reponame:idUS. Depósito de Investigación de la Universidad de Sevillainstname:Universidad de Sevilla (US)InglésNuclear Materials and Energy, 18, 119-124.633053https://doi.org/10.1016/j.nme.2018.12.009info:eu-repo/semantics/openAccessoai:idus.us.es:11441/990632026-06-17T12:51:07Z
dc.title.none.fl_str_mv Determination of tungsten sources in the JET-ILW divertor by spectroscopic imaging in the presence of a strong plasma continuum
title Determination of tungsten sources in the JET-ILW divertor by spectroscopic imaging in the presence of a strong plasma continuum
spellingShingle Determination of tungsten sources in the JET-ILW divertor by spectroscopic imaging in the presence of a strong plasma continuum
Huber, A.
Tungsten erosion
Tungsten imaging spectroscopy
W Divertor
JET-ILW
PSI
title_short Determination of tungsten sources in the JET-ILW divertor by spectroscopic imaging in the presence of a strong plasma continuum
title_full Determination of tungsten sources in the JET-ILW divertor by spectroscopic imaging in the presence of a strong plasma continuum
title_fullStr Determination of tungsten sources in the JET-ILW divertor by spectroscopic imaging in the presence of a strong plasma continuum
title_full_unstemmed Determination of tungsten sources in the JET-ILW divertor by spectroscopic imaging in the presence of a strong plasma continuum
title_sort Determination of tungsten sources in the JET-ILW divertor by spectroscopic imaging in the presence of a strong plasma continuum
dc.creator.none.fl_str_mv Huber, A.
Brezinsek, S.
Kirschner, A.
Ström, P.
Sergienko, G.
Jet Contributors
García Muñoz, Manuel
author Huber, A.
author_facet Huber, A.
Brezinsek, S.
Kirschner, A.
Ström, P.
Sergienko, G.
Jet Contributors
García Muñoz, Manuel
author_role author
author2 Brezinsek, S.
Kirschner, A.
Ström, P.
Sergienko, G.
Jet Contributors
García Muñoz, Manuel
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Física Atómica, Molecular y Nuclear
RNM138: Física Nuclear Aplicada
dc.subject.none.fl_str_mv Tungsten erosion
Tungsten imaging spectroscopy
W Divertor
JET-ILW
PSI
topic Tungsten erosion
Tungsten imaging spectroscopy
W Divertor
JET-ILW
PSI
description The 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.
publishDate 2019
dc.date.none.fl_str_mv 2019
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/11441/99063
https://doi.org/10.1016/j.nme.2018.12.009
url https://hdl.handle.net/11441/99063
https://doi.org/10.1016/j.nme.2018.12.009
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Nuclear Materials and Energy, 18, 119-124.
633053
https://doi.org/10.1016/j.nme.2018.12.009
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:idUS. Depósito de Investigación de la Universidad de Sevilla
instname:Universidad de Sevilla (US)
instname_str Universidad de Sevilla (US)
reponame_str idUS. Depósito de Investigación de la Universidad de Sevilla
collection idUS. Depósito de Investigación de la Universidad de Sevilla
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.301603

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