Development of Magnetohydrodynamic Modes During Sawteeth in Tokamak Plasmas

Autores
Firpo, Marie C.; Ettoumi, W.; Farengo, R.; Ferrari, Hugo Emilio; Garcia Martinez, Pablo Luis; Lifschitz, A. F.
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
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.
Fil: Firpo, Marie C.. Ecole Polytechnique; Francia. Centre National de la Recherche Scientifique; Francia
Fil: Ettoumi, W.. Ecole Polytechnique; Francia. Centre National de la Recherche Scientifique; Francia
Fil: 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; Argentina
Fil: 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; Argentina
Fil: Garcia Martinez, Pablo Luis. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Lifschitz, A. F.. Ecole Polytechnique; Francia. Centre National de la Recherche Scientifique; Francia
Materia
PLASMA CONFINEMENT
PLASMA MAGNETOHYDRODYNAMICS
PLASMA INSTABILTY
TOKAMAK
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/8982
Acceder
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network_name_str CONICET Digital (CONICET)
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 Técnicas2025-09-29T09:41:21Zoai: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:34982025-09-29 09:41:22.025CONICET 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
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
topic PLASMA CONFINEMENT
PLASMA MAGNETOHYDRODYNAMICS
PLASMA INSTABILTY
TOKAMAK
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv 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.
Fil: Firpo, Marie C.. Ecole Polytechnique; Francia. Centre National de la Recherche Scientifique; Francia
Fil: Ettoumi, W.. Ecole Polytechnique; Francia. Centre National de la Recherche Scientifique; Francia
Fil: 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; Argentina
Fil: 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; Argentina
Fil: Garcia Martinez, Pablo Luis. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Lifschitz, A. F.. Ecole Polytechnique; Francia. Centre National de la Recherche Scientifique; Francia
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
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
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
_version_ 1844613306709442560
score 13.069144

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