ELM-induced cold pulse propagation in ASDEX Upgrade

In ASDEX Upgrade, the propagation of cold pulses induced by type-I edge localized modes (ELMs) is studied using electron cyclotron emission measurements, in a dataset of plasmas with moderate triangularity. It is found that the edge safety factor or the plasma current are the main determining parame...

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Autores: Trier, E., Wolfrum, E., Willensdorfer, M., Yu, Q., Hoelzl, M., Orain, F., ASDEX Upgrade Team, EUROfusion MST1 Team, García López, Francisco Javier, García Muñoz, Manuel, Rodríguez Ramos, Mauricio
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:11441/98787
Acceso en línea:https://hdl.handle.net/11441/98787
https://doi.org/10.1088/1361-6587/aaf9c3
Access Level:acceso abierto
Palabra clave:Cold pulse
ELMs
Magnetic islands
MHD instabilities
Stochastic field
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repository_id_str
spelling ELM-induced cold pulse propagation in ASDEX UpgradeTrier, E.Wolfrum, E.Willensdorfer, M.Yu, Q.Hoelzl, M.Orain, F.ASDEX Upgrade TeamEUROfusion MST1 TeamGarcía López, Francisco JavierGarcía Muñoz, ManuelRodríguez Ramos, MauricioCold pulseELMsMagnetic islandsMHD instabilitiesStochastic fieldIn ASDEX Upgrade, the propagation of cold pulses induced by type-I edge localized modes (ELMs) is studied using electron cyclotron emission measurements, in a dataset of plasmas with moderate triangularity. It is found that the edge safety factor or the plasma current are the main determining parameters for the inward penetration of the T e perturbations. With increasing plasma current the ELM penetration is more shallow in spite of the stronger ELMs. Estimates of the heat pulse diffusivity show that the corresponding transport is too large to be representative of the inter-ELM phase. Ergodization of the plasma edge during ELMs is a possible explanation for the observed properties of the cold pulse propagation, which is qualitatively consistent with non-linear magneto-hydro-dynamic simulations.EURATOM 633053IOP PublishingFísica Atómica, Molecular y Nuclear2019info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfapplication/pdfhttps://hdl.handle.net/11441/98787https://doi.org/10.1088/1361-6587/aaf9c3reponame:idUS. Depósito de Investigación de la Universidad de Sevillainstname:Universidad de Sevilla (US)InglésPlasma Physics and Controlled Fusion, 61 (4), 045003.633053https://doi.org/10.1088/1361-6587/aaf9c3info:eu-repo/semantics/openAccessoai:idus.us.es:11441/987872026-06-17T12:51:07Z
dc.title.none.fl_str_mv ELM-induced cold pulse propagation in ASDEX Upgrade
title ELM-induced cold pulse propagation in ASDEX Upgrade
spellingShingle ELM-induced cold pulse propagation in ASDEX Upgrade
Trier, E.
Cold pulse
ELMs
Magnetic islands
MHD instabilities
Stochastic field
title_short ELM-induced cold pulse propagation in ASDEX Upgrade
title_full ELM-induced cold pulse propagation in ASDEX Upgrade
title_fullStr ELM-induced cold pulse propagation in ASDEX Upgrade
title_full_unstemmed ELM-induced cold pulse propagation in ASDEX Upgrade
title_sort ELM-induced cold pulse propagation in ASDEX Upgrade
dc.creator.none.fl_str_mv Trier, E.
Wolfrum, E.
Willensdorfer, M.
Yu, Q.
Hoelzl, M.
Orain, F.
ASDEX Upgrade Team
EUROfusion MST1 Team
García López, Francisco Javier
García Muñoz, Manuel
Rodríguez Ramos, Mauricio
author Trier, E.
author_facet Trier, E.
Wolfrum, E.
Willensdorfer, M.
Yu, Q.
Hoelzl, M.
Orain, F.
ASDEX Upgrade Team
EUROfusion MST1 Team
García López, Francisco Javier
García Muñoz, Manuel
Rodríguez Ramos, Mauricio
author_role author
author2 Wolfrum, E.
Willensdorfer, M.
Yu, Q.
Hoelzl, M.
Orain, F.
ASDEX Upgrade Team
EUROfusion MST1 Team
García López, Francisco Javier
García Muñoz, Manuel
Rodríguez Ramos, Mauricio
author2_role author
author
author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Física Atómica, Molecular y Nuclear
dc.subject.none.fl_str_mv Cold pulse
ELMs
Magnetic islands
MHD instabilities
Stochastic field
topic Cold pulse
ELMs
Magnetic islands
MHD instabilities
Stochastic field
description In ASDEX Upgrade, the propagation of cold pulses induced by type-I edge localized modes (ELMs) is studied using electron cyclotron emission measurements, in a dataset of plasmas with moderate triangularity. It is found that the edge safety factor or the plasma current are the main determining parameters for the inward penetration of the T e perturbations. With increasing plasma current the ELM penetration is more shallow in spite of the stronger ELMs. Estimates of the heat pulse diffusivity show that the corresponding transport is too large to be representative of the inter-ELM phase. Ergodization of the plasma edge during ELMs is a possible explanation for the observed properties of the cold pulse propagation, which is qualitatively consistent with non-linear magneto-hydro-dynamic simulations.
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/11441/98787
https://doi.org/10.1088/1361-6587/aaf9c3
url https://hdl.handle.net/11441/98787
https://doi.org/10.1088/1361-6587/aaf9c3
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Plasma Physics and Controlled Fusion, 61 (4), 045003.
633053
https://doi.org/10.1088/1361-6587/aaf9c3
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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score 15.301603

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