Development of Magnetohydrodynamic Modes During Sawteeth in Tokamak Plasmas

A dynamical analysis applied to a reduced resistive magnetohydrodynamics model is shown to explain the chronology of the nonlinear destabilization of modes observed in tokamak sawteeth. A special emphasis is put on the nonlinear self-consistent perturbation of the axisymmetric m = n = 0 mode that ma...

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Detalles Bibliográficos
Autores: Firpo, Marie C., Ettoumi, W., Farengo, R., Ferrari, Hugo Emilio, Garcia Martinez, Pablo Luis, Lifschitz, A. F.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2013
País:Argentina
Institución:Consejo Nacional de Investigaciones Científicas y Técnicas
Repositorio:CONICET Digital (CONICET)
Idioma:inglés
OAI Identifier:oai:ri.conicet.gov.ar:11336/8982
Acceso en línea:http://hdl.handle.net/11336/8982
Access Level:acceso abierto
Palabra clave:PLASMA CONFINEMENT
PLASMA MAGNETOHYDRODYNAMICS
PLASMA INSTABILTY
TOKAMAK
https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
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repository_id_str
spelling Development of Magnetohydrodynamic Modes During Sawteeth in Tokamak PlasmasFirpo, Marie C.Ettoumi, W.Farengo, R.Ferrari, Hugo EmilioGarcia Martinez, Pablo LuisLifschitz, A. F.PLASMA CONFINEMENTPLASMA MAGNETOHYDRODYNAMICSPLASMA INSTABILTYTOKAMAKhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1A dynamical analysis applied to a reduced resistive magnetohydrodynamics model is shown to explain the chronology of the nonlinear destabilization of modes observed in tokamak sawteeth. A special emphasis is put on the nonlinear self-consistent perturbation of the axisymmetric m = n = 0 mode that manifests through the q-profile evolution. For the very low fusion-relevant resistivity values, the q-profile is shown to remain almost unchanged on the early nonlinear timescale within the central tokamak region, which supports a partial reconnection scenario. Within the resistive region, indications for a local flattening or even a local reversed-shear of the q-profile are given. The impact of this ingredient in the occurrence of the sawtooth crash is discussed.Fil: Firpo, Marie C.. Ecole Polytechnique; Francia. Centre National de la Recherche Scientifique; FranciaFil: Ettoumi, W.. Ecole Polytechnique; Francia. Centre National de la Recherche Scientifique; FranciaFil: Farengo, R.. Comision Nacional de Energia Atomica. Gerencia del Area de Investigaciones y Aplicaciones no Nucleares. Gerencia de Fisica (CAB); Argentina. Comisión Nacional de Energía Atómica. Gerencia del Area de Energía Nuclear. Instituto Balseiro; ArgentinaFil: Ferrari, Hugo Emilio. Comision Nacional de Energia Atomica. Gerencia del Area de Investigaciones y Aplicaciones no Nucleares. Gerencia de Fisica (CAB); Argentina. Comisión Nacional de Energía Atómica. Gerencia del Area de Energía Nuclear. Instituto Balseiro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Garcia Martinez, Pablo Luis. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Lifschitz, A. F.. Ecole Polytechnique; Francia. Centre National de la Recherche Scientifique; FranciaAmerican Institute Of Physics2013-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/8982Firpo, Marie C.; Ettoumi, W.; Farengo, R.; Ferrari, Hugo Emilio; Garcia Martinez, Pablo Luis; et al.; Development of Magnetohydrodynamic Modes During Sawteeth in Tokamak Plasmas; American Institute Of Physics; Physics Of Plasmas; 20; 7; 7-2013; 72305-723151070-664Xenginfo:eu-repo/semantics/altIdentifier/url/http://scitation.aip.org/content/aip/journal/pop/20/7/10.1063/1.4816025info:eu-repo/semantics/altIdentifier/arxiv/http://dx.doi.org/10.1063/1.4816025info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2024-05-08T13:39:25Zoai:ri.conicet.gov.ar:11336/8982instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982024-05-08 13:39:25.594CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Development of Magnetohydrodynamic Modes During Sawteeth in Tokamak Plasmas
title Development of Magnetohydrodynamic Modes During Sawteeth in Tokamak Plasmas
spellingShingle Development of Magnetohydrodynamic Modes During Sawteeth in Tokamak Plasmas
Firpo, Marie C.
PLASMA CONFINEMENT
PLASMA MAGNETOHYDRODYNAMICS
PLASMA INSTABILTY
TOKAMAK
https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
title_short Development of Magnetohydrodynamic Modes During Sawteeth in Tokamak Plasmas
title_full Development of Magnetohydrodynamic Modes During Sawteeth in Tokamak Plasmas
title_fullStr Development of Magnetohydrodynamic Modes During Sawteeth in Tokamak Plasmas
title_full_unstemmed Development of Magnetohydrodynamic Modes During Sawteeth in Tokamak Plasmas
title_sort Development of Magnetohydrodynamic Modes During Sawteeth in Tokamak Plasmas
dc.creator.none.fl_str_mv Firpo, Marie C.
Ettoumi, W.
Farengo, R.
Ferrari, Hugo Emilio
Garcia Martinez, Pablo Luis
Lifschitz, A. F.
author Firpo, Marie C.
author_facet Firpo, Marie C.
Ettoumi, W.
Farengo, R.
Ferrari, Hugo Emilio
Garcia Martinez, Pablo Luis
Lifschitz, A. F.
author_role author
author2 Ettoumi, W.
Farengo, R.
Ferrari, Hugo Emilio
Garcia Martinez, Pablo Luis
Lifschitz, A. F.
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv PLASMA CONFINEMENT
PLASMA MAGNETOHYDRODYNAMICS
PLASMA INSTABILTY
TOKAMAK
https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
topic PLASMA CONFINEMENT
PLASMA MAGNETOHYDRODYNAMICS
PLASMA INSTABILTY
TOKAMAK
https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
description A dynamical analysis applied to a reduced resistive magnetohydrodynamics model is shown to explain the chronology of the nonlinear destabilization of modes observed in tokamak sawteeth. A special emphasis is put on the nonlinear self-consistent perturbation of the axisymmetric m = n = 0 mode that manifests through the q-profile evolution. For the very low fusion-relevant resistivity values, the q-profile is shown to remain almost unchanged on the early nonlinear timescale within the central tokamak region, which supports a partial reconnection scenario. Within the resistive region, indications for a local flattening or even a local reversed-shear of the q-profile are given. The impact of this ingredient in the occurrence of the sawtooth crash is discussed.
publishDate 2013
dc.date.none.fl_str_mv 2013-07
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/8982
Firpo, Marie C.; Ettoumi, W.; Farengo, R.; Ferrari, Hugo Emilio; Garcia Martinez, Pablo Luis; et al.; Development of Magnetohydrodynamic Modes During Sawteeth in Tokamak Plasmas; American Institute Of Physics; Physics Of Plasmas; 20; 7; 7-2013; 72305-72315
1070-664X
url http://hdl.handle.net/11336/8982
identifier_str_mv Firpo, Marie C.; Ettoumi, W.; Farengo, R.; Ferrari, Hugo Emilio; Garcia Martinez, Pablo Luis; et al.; Development of Magnetohydrodynamic Modes During Sawteeth in Tokamak Plasmas; American Institute Of Physics; Physics Of Plasmas; 20; 7; 7-2013; 72305-72315
1070-664X
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://scitation.aip.org/content/aip/journal/pop/20/7/10.1063/1.4816025
info:eu-repo/semantics/altIdentifier/arxiv/http://dx.doi.org/10.1063/1.4816025
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv American Institute Of Physics
publisher.none.fl_str_mv American Institute Of Physics
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 15.812429

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