Evidence and relevance of spatially chaotic magnetic field lines in MCF devices

Autores
Firpo, Marie Christine; Lifschitz, Agustin Federico; Ettoumi, Wahb; Farengo, Ricardo; Ferrari, Hugo Emilio; Garcia Martinez, Pablo Luis
Año de publicación
2017
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Numerical evidence for the existence of spatially chaotic magnetic field lines about the collapse phase of tokamak sawteeth with incomplete reconnection is presented. This uses the results of
extensive test particle simulations in different sets of electromagnetic perturbations tested against experimental JET measurements. In tokamak sawteeth, that form a laboratory prototype of magnetic reconnection, the relative magnetic perturbation dB B may reach a few percents. This does not apply to tokamak operating regimes dominated by turbulence where dB B is usually not larger than 10^- 4 . However, this small magnetic perturbation being sustained by a large spectrum of modes is shown to be sufficient to ensure the existence of stochastic magnetic field lines. This has important consequences for magnetic confinement fusion where electrons are dominantly governed by the magnetic force. Indeed some overlap between magnetic resonances can locally induce chaotic magnetic field lines enabling the spatial redistribution of the electron population and of its thermal content. As they are the swiftest plasma particles, electrons feed back the most rapid perturbations of the magnetic field.
Fil: Firpo, Marie Christine. Centre National de la Recherche Scientifique; Francia
Fil: Lifschitz, Agustin Federico. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Centre National de la Recherche Scientifique; Francia
Fil: Ettoumi, Wahb. Centre National de la Recherche Scientifique; Francia. Universidad de Ginebra; Suiza
Fil: Farengo, Ricardo. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina
Fil: Ferrari, Hugo Emilio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina
Fil: Garcia Martinez, Pablo Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina
Materia
Magnetic confinement fusion
Chaotic magnetic field lines
Stochasticity
Magnetic turbulence
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:11336/66254
Acceder
id CONICETDig_17fe0e29f30a326956acf7b134ae67f4
oai_identifier_str oai:ri.conicet.gov.ar:11336/66254
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Evidence and relevance of spatially chaotic magnetic field lines in MCF devicesFirpo, Marie ChristineLifschitz, Agustin FedericoEttoumi, WahbFarengo, RicardoFerrari, Hugo EmilioGarcia Martinez, Pablo LuisMagnetic confinement fusionChaotic magnetic field linesStochasticityMagnetic turbulencehttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Numerical evidence for the existence of spatially chaotic magnetic field lines about the collapse phase of tokamak sawteeth with incomplete reconnection is presented. This uses the results of<br />extensive test particle simulations in different sets of electromagnetic perturbations tested against experimental JET measurements. In tokamak sawteeth, that form a laboratory prototype of magnetic reconnection, the relative magnetic perturbation dB B may reach a few percents. This does not apply to tokamak operating regimes dominated by turbulence where dB B is usually not larger than 10^- 4 . However, this small magnetic perturbation being sustained by a large spectrum of modes is shown to be sufficient to ensure the existence of stochastic magnetic field lines. This has important consequences for magnetic confinement fusion where electrons are dominantly governed by the magnetic force. Indeed some overlap between magnetic resonances can locally induce chaotic magnetic field lines enabling the spatial redistribution of the electron population and of its thermal content. As they are the swiftest plasma particles, electrons feed back the most rapid perturbations of the magnetic field.Fil: Firpo, Marie Christine. Centre National de la Recherche Scientifique; FranciaFil: Lifschitz, Agustin Federico. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Centre National de la Recherche Scientifique; FranciaFil: Ettoumi, Wahb. Centre National de la Recherche Scientifique; Francia. Universidad de Ginebra; SuizaFil: Farengo, Ricardo. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; ArgentinaFil: Ferrari, Hugo Emilio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; ArgentinaFil: Garcia Martinez, Pablo Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; ArgentinaIOP Publishing2017-03-31info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/66254Firpo, Marie Christine; Lifschitz, Agustin Federico; Ettoumi, Wahb; Farengo, Ricardo; Ferrari, Hugo Emilio; et al.; Evidence and relevance of spatially chaotic magnetic field lines in MCF devices; IOP Publishing; Plasma Physics And Controlled Fusion; 59; 3; 31-3-2017; 034005/1 - 034005/90741-3335CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1088/1361-6587/aa570dinfo:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1088/1361-6587/aa570dinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:23:38Zoai:ri.conicet.gov.ar:11336/66254instacron: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:34982025-10-22 11:23:39.012CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Evidence and relevance of spatially chaotic magnetic field lines in MCF devices
title Evidence and relevance of spatially chaotic magnetic field lines in MCF devices
spellingShingle Evidence and relevance of spatially chaotic magnetic field lines in MCF devices
Firpo, Marie Christine
Magnetic confinement fusion
Chaotic magnetic field lines
Stochasticity
Magnetic turbulence
title_short Evidence and relevance of spatially chaotic magnetic field lines in MCF devices
title_full Evidence and relevance of spatially chaotic magnetic field lines in MCF devices
title_fullStr Evidence and relevance of spatially chaotic magnetic field lines in MCF devices
title_full_unstemmed Evidence and relevance of spatially chaotic magnetic field lines in MCF devices
title_sort Evidence and relevance of spatially chaotic magnetic field lines in MCF devices
dc.creator.none.fl_str_mv Firpo, Marie Christine
Lifschitz, Agustin Federico
Ettoumi, Wahb
Farengo, Ricardo
Ferrari, Hugo Emilio
Garcia Martinez, Pablo Luis
author Firpo, Marie Christine
author_facet Firpo, Marie Christine
Lifschitz, Agustin Federico
Ettoumi, Wahb
Farengo, Ricardo
Ferrari, Hugo Emilio
Garcia Martinez, Pablo Luis
author_role author
author2 Lifschitz, Agustin Federico
Ettoumi, Wahb
Farengo, Ricardo
Ferrari, Hugo Emilio
Garcia Martinez, Pablo Luis
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Magnetic confinement fusion
Chaotic magnetic field lines
Stochasticity
Magnetic turbulence
topic Magnetic confinement fusion
Chaotic magnetic field lines
Stochasticity
Magnetic turbulence
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Numerical evidence for the existence of spatially chaotic magnetic field lines about the collapse phase of tokamak sawteeth with incomplete reconnection is presented. This uses the results of<br />extensive test particle simulations in different sets of electromagnetic perturbations tested against experimental JET measurements. In tokamak sawteeth, that form a laboratory prototype of magnetic reconnection, the relative magnetic perturbation dB B may reach a few percents. This does not apply to tokamak operating regimes dominated by turbulence where dB B is usually not larger than 10^- 4 . However, this small magnetic perturbation being sustained by a large spectrum of modes is shown to be sufficient to ensure the existence of stochastic magnetic field lines. This has important consequences for magnetic confinement fusion where electrons are dominantly governed by the magnetic force. Indeed some overlap between magnetic resonances can locally induce chaotic magnetic field lines enabling the spatial redistribution of the electron population and of its thermal content. As they are the swiftest plasma particles, electrons feed back the most rapid perturbations of the magnetic field.
Fil: Firpo, Marie Christine. Centre National de la Recherche Scientifique; Francia
Fil: Lifschitz, Agustin Federico. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Centre National de la Recherche Scientifique; Francia
Fil: Ettoumi, Wahb. Centre National de la Recherche Scientifique; Francia. Universidad de Ginebra; Suiza
Fil: Farengo, Ricardo. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina
Fil: Ferrari, Hugo Emilio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina
Fil: Garcia Martinez, Pablo Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina
description Numerical evidence for the existence of spatially chaotic magnetic field lines about the collapse phase of tokamak sawteeth with incomplete reconnection is presented. This uses the results of<br />extensive test particle simulations in different sets of electromagnetic perturbations tested against experimental JET measurements. In tokamak sawteeth, that form a laboratory prototype of magnetic reconnection, the relative magnetic perturbation dB B may reach a few percents. This does not apply to tokamak operating regimes dominated by turbulence where dB B is usually not larger than 10^- 4 . However, this small magnetic perturbation being sustained by a large spectrum of modes is shown to be sufficient to ensure the existence of stochastic magnetic field lines. This has important consequences for magnetic confinement fusion where electrons are dominantly governed by the magnetic force. Indeed some overlap between magnetic resonances can locally induce chaotic magnetic field lines enabling the spatial redistribution of the electron population and of its thermal content. As they are the swiftest plasma particles, electrons feed back the most rapid perturbations of the magnetic field.
publishDate 2017
dc.date.none.fl_str_mv 2017-03-31
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/11336/66254
Firpo, Marie Christine; Lifschitz, Agustin Federico; Ettoumi, Wahb; Farengo, Ricardo; Ferrari, Hugo Emilio; et al.; Evidence and relevance of spatially chaotic magnetic field lines in MCF devices; IOP Publishing; Plasma Physics And Controlled Fusion; 59; 3; 31-3-2017; 034005/1 - 034005/9
0741-3335
CONICET Digital
CONICET
url http://hdl.handle.net/11336/66254
identifier_str_mv Firpo, Marie Christine; Lifschitz, Agustin Federico; Ettoumi, Wahb; Farengo, Ricardo; Ferrari, Hugo Emilio; et al.; Evidence and relevance of spatially chaotic magnetic field lines in MCF devices; IOP Publishing; Plasma Physics And Controlled Fusion; 59; 3; 31-3-2017; 034005/1 - 034005/9
0741-3335
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1088/1361-6587/aa570d
info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1088/1361-6587/aa570d
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
dc.publisher.none.fl_str_mv IOP Publishing
publisher.none.fl_str_mv IOP Publishing
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_ 1846781767605813248
score 12.982451

Publicaciones similares