Dynamics of the pedestal transport during edge localized mode cycles at ASDEX Upgrade

The dynamic behaviour of the ion and electron energy, particle and momentum transport measured during type-I edge localized mode (ELM) cycles at ASDEX Upgrade is presented. Fast measurements of the ion and electron temperature profiles revelead that the ion and electron energy transport recover on d...

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Autores: Viezzer, Eleonora, Cavedon, M., Cano Megías, Pilar, Fable, E., Wolfrum, Elisabeth, Cruz Zabala, Diego José, Willensdorfer, M.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2020
País:España
Institución:Universidad de Sevilla (US)
Repositorio:idUS. Depósito de Investigación de la Universidad de Sevilla
OAI Identifier:oai:idus.us.es:11441/128578
Acceso en línea:https://hdl.handle.net/11441/128578
https://doi.org/10.1088/1361-6587/ab5b1d
Access Level:acceso abierto
Palabra clave:Magnetic confinement fusion
Plasma transport
Magnetohydrodynamics
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spelling Dynamics of the pedestal transport during edge localized mode cycles at ASDEX UpgradeViezzer, EleonoraCavedon, M.Cano Megías, PilarFable, E.Wolfrum, ElisabethCruz Zabala, Diego JoséWillensdorfer, M.Magnetic confinement fusionPlasma transportMagnetohydrodynamicsThe dynamic behaviour of the ion and electron energy, particle and momentum transport measured during type-I edge localized mode (ELM) cycles at ASDEX Upgrade is presented. Fast measurements of the ion and electron temperature profiles revelead that the ion and electron energy transport recover on different timescales, with the electrons recovering on a slower timescale (Cavedon et al 2017 Plasma Phys. Control. Fusion 59 105007). The dominant mechanism for the additional energy transport in the electron channel that could cause the delay in the electron temperature gradient (VTe) recovery is attributed to the depletion of energy caused by the ELM. The local sources and sinks for the electron channel in the steep gradient region are much smaller compared to the energy flux arriving from the pedestal top, indicating that the core plasma may dictate the local dynamics of the VTe recovery during the ELM cycle. A model for the edge momentum transport based on toroidal torque balance that takes into account the existence of poloidal impurity asymmetries has been developed. The analysis of the profile evolution during the ELM cycle shows that the model captures the dynamics of the rotation both before the ELM crash and during the recovery phase.European Commission (Euratom) Grant agreement No. 633053H2020 Marie-Sklodowska Curie programme (grant agreement No. 708257)European Union’s Horizon 2020 (grant agreement No. 805162)IOP PublishingFísica Atómica, Molecular y NuclearIngeniería EnergéticaEuropean Commission (EC)2020info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfapplication/pdfhttps://hdl.handle.net/11441/128578https://doi.org/10.1088/1361-6587/ab5b1dreponame:idUS. Depósito de Investigación de la Universidad de Sevillainstname:Universidad de Sevilla (US)InglésPlasma Physics and Controlled Fusion, 62, 024009.Grant agreement No. 633053grant agreement No. 708257Grant agreement No. 80516210.1088/1361-6587/ab5b1dinfo:eu-repo/semantics/openAccessoai:idus.us.es:11441/1285782026-06-17T12:51:07Z
dc.title.none.fl_str_mv Dynamics of the pedestal transport during edge localized mode cycles at ASDEX Upgrade
title Dynamics of the pedestal transport during edge localized mode cycles at ASDEX Upgrade
spellingShingle Dynamics of the pedestal transport during edge localized mode cycles at ASDEX Upgrade
Viezzer, Eleonora
Magnetic confinement fusion
Plasma transport
Magnetohydrodynamics
title_short Dynamics of the pedestal transport during edge localized mode cycles at ASDEX Upgrade
title_full Dynamics of the pedestal transport during edge localized mode cycles at ASDEX Upgrade
title_fullStr Dynamics of the pedestal transport during edge localized mode cycles at ASDEX Upgrade
title_full_unstemmed Dynamics of the pedestal transport during edge localized mode cycles at ASDEX Upgrade
title_sort Dynamics of the pedestal transport during edge localized mode cycles at ASDEX Upgrade
dc.creator.none.fl_str_mv Viezzer, Eleonora
Cavedon, M.
Cano Megías, Pilar
Fable, E.
Wolfrum, Elisabeth
Cruz Zabala, Diego José
Willensdorfer, M.
author Viezzer, Eleonora
author_facet Viezzer, Eleonora
Cavedon, M.
Cano Megías, Pilar
Fable, E.
Wolfrum, Elisabeth
Cruz Zabala, Diego José
Willensdorfer, M.
author_role author
author2 Cavedon, M.
Cano Megías, Pilar
Fable, E.
Wolfrum, Elisabeth
Cruz Zabala, Diego José
Willensdorfer, M.
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Física Atómica, Molecular y Nuclear
Ingeniería Energética
European Commission (EC)
dc.subject.none.fl_str_mv Magnetic confinement fusion
Plasma transport
Magnetohydrodynamics
topic Magnetic confinement fusion
Plasma transport
Magnetohydrodynamics
description The dynamic behaviour of the ion and electron energy, particle and momentum transport measured during type-I edge localized mode (ELM) cycles at ASDEX Upgrade is presented. Fast measurements of the ion and electron temperature profiles revelead that the ion and electron energy transport recover on different timescales, with the electrons recovering on a slower timescale (Cavedon et al 2017 Plasma Phys. Control. Fusion 59 105007). The dominant mechanism for the additional energy transport in the electron channel that could cause the delay in the electron temperature gradient (VTe) recovery is attributed to the depletion of energy caused by the ELM. The local sources and sinks for the electron channel in the steep gradient region are much smaller compared to the energy flux arriving from the pedestal top, indicating that the core plasma may dictate the local dynamics of the VTe recovery during the ELM cycle. A model for the edge momentum transport based on toroidal torque balance that takes into account the existence of poloidal impurity asymmetries has been developed. The analysis of the profile evolution during the ELM cycle shows that the model captures the dynamics of the rotation both before the ELM crash and during the recovery phase.
publishDate 2020
dc.date.none.fl_str_mv 2020
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/11441/128578
https://doi.org/10.1088/1361-6587/ab5b1d
url https://hdl.handle.net/11441/128578
https://doi.org/10.1088/1361-6587/ab5b1d
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Plasma Physics and Controlled Fusion, 62, 024009.
Grant agreement No. 633053
grant agreement No. 708257
Grant agreement No. 805162
10.1088/1361-6587/ab5b1d
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 IOP Publishing
publisher.none.fl_str_mv IOP Publishing
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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