Analysis of ELM stability with extended MHD models in JET, JT-60U and future JT-60SA tokamak plasmas

The stability with respect to a peeling–ballooning mode (PBM) was investigated numerically with extended MHD simulation codes in JET, JT-60U and future JT-60SA plasmas. The MINERVA-DI code was used to analyze the linear stability, including the effects of rotation and ion diamagnetic drift ( *w i),...

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Detalles Bibliográficos
Autores: Aiba, N., Pamela, S., Honda, M., Urano, H., Giroud, C., Jet Contributors, García Muñoz, Manuel, Ayllón Guerola, Juan Manuel
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2018
País:España
Institución:Universidad de Sevilla (US)
Repositorio:idUS. Depósito de Investigación de la Universidad de Sevilla
OAI Identifier:oai:idus.us.es:11441/99695
Acceso en línea:https://hdl.handle.net/11441/99695
https://doi.org/10.1088/1361-6587/aa8bec
Access Level:acceso abierto
Palabra clave:ELM
Extended MHD model
Rotation
Tokamaks
H-mode
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spelling Analysis of ELM stability with extended MHD models in JET, JT-60U and future JT-60SA tokamak plasmasAiba, N.Pamela, S.Honda, M.Urano, H.Giroud, C.Jet ContributorsGarcía Muñoz, ManuelAyllón Guerola, Juan ManuelELMExtended MHD modelRotationTokamaksH-modeThe stability with respect to a peeling–ballooning mode (PBM) was investigated numerically with extended MHD simulation codes in JET, JT-60U and future JT-60SA plasmas. The MINERVA-DI code was used to analyze the linear stability, including the effects of rotation and ion diamagnetic drift ( *w i), in JET-ILW and JT-60SA plasmas, and the JOREK code was used to simulate nonlinear dynamics with rotation, viscosity and resistivity in JT-60U plasmas. It was validated quantitatively that the ELM trigger condition in JET-ILW plasmas can be reasonably explained by taking into account both the rotation and *w i effects in the numerical analysis. When deuterium poloidal rotation is evaluated based on neoclassical theory, an increase in the effective charge of plasma destabilizes the PBM because of an acceleration of rotation and a decrease in *w i. The difference in the amount of ELM energy loss in JT-60U plasmas rotating in opposite directions was reproduced qualitatively with JOREK. By comparing the ELM affected areas with linear eigenfunctions, it was confirmed that the difference in the linear stability property, due not to the rotation direction but to the plasma density profile, is thought to be responsible for changing the ELM energy loss just after the ELM crash. A predictive study to determine the pedestal profiles in JT-60SA was performed by updating the EPED1 model to include the rotation and *w i effects in the PBM stability analysis. It was shown that the plasma rotation predicted with the neoclassical toroidal viscosity degrades the pedestal performance by about 10% by destabilizing the PBM, but the pressure pedestal height will be high enough to achieve the target parameters required for the ITER-like shape inductive scenario in JT-60SA.JSPS KAKENHI 15K06656EURATOM 633053IOP PublishingFísica Atómica, Molecular y NuclearRNM138: Física Nuclear Aplicada2018info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfapplication/pdfhttps://hdl.handle.net/11441/99695https://doi.org/10.1088/1361-6587/aa8becreponame:idUS. Depósito de Investigación de la Universidad de Sevillainstname:Universidad de Sevilla (US)InglésPlasma Physics and Controlled Fusion, 60 (1), 1-11.15K06656633053https://doi.org/10.1088/1361-6587/aa8becinfo:eu-repo/semantics/openAccessoai:idus.us.es:11441/996952026-06-17T12:51:07Z
dc.title.none.fl_str_mv Analysis of ELM stability with extended MHD models in JET, JT-60U and future JT-60SA tokamak plasmas
title Analysis of ELM stability with extended MHD models in JET, JT-60U and future JT-60SA tokamak plasmas
spellingShingle Analysis of ELM stability with extended MHD models in JET, JT-60U and future JT-60SA tokamak plasmas
Aiba, N.
ELM
Extended MHD model
Rotation
Tokamaks
H-mode
title_short Analysis of ELM stability with extended MHD models in JET, JT-60U and future JT-60SA tokamak plasmas
title_full Analysis of ELM stability with extended MHD models in JET, JT-60U and future JT-60SA tokamak plasmas
title_fullStr Analysis of ELM stability with extended MHD models in JET, JT-60U and future JT-60SA tokamak plasmas
title_full_unstemmed Analysis of ELM stability with extended MHD models in JET, JT-60U and future JT-60SA tokamak plasmas
title_sort Analysis of ELM stability with extended MHD models in JET, JT-60U and future JT-60SA tokamak plasmas
dc.creator.none.fl_str_mv Aiba, N.
Pamela, S.
Honda, M.
Urano, H.
Giroud, C.
Jet Contributors
García Muñoz, Manuel
Ayllón Guerola, Juan Manuel
author Aiba, N.
author_facet Aiba, N.
Pamela, S.
Honda, M.
Urano, H.
Giroud, C.
Jet Contributors
García Muñoz, Manuel
Ayllón Guerola, Juan Manuel
author_role author
author2 Pamela, S.
Honda, M.
Urano, H.
Giroud, C.
Jet Contributors
García Muñoz, Manuel
Ayllón Guerola, Juan Manuel
author2_role author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Física Atómica, Molecular y Nuclear
RNM138: Física Nuclear Aplicada
dc.subject.none.fl_str_mv ELM
Extended MHD model
Rotation
Tokamaks
H-mode
topic ELM
Extended MHD model
Rotation
Tokamaks
H-mode
description The stability with respect to a peeling–ballooning mode (PBM) was investigated numerically with extended MHD simulation codes in JET, JT-60U and future JT-60SA plasmas. The MINERVA-DI code was used to analyze the linear stability, including the effects of rotation and ion diamagnetic drift ( *w i), in JET-ILW and JT-60SA plasmas, and the JOREK code was used to simulate nonlinear dynamics with rotation, viscosity and resistivity in JT-60U plasmas. It was validated quantitatively that the ELM trigger condition in JET-ILW plasmas can be reasonably explained by taking into account both the rotation and *w i effects in the numerical analysis. When deuterium poloidal rotation is evaluated based on neoclassical theory, an increase in the effective charge of plasma destabilizes the PBM because of an acceleration of rotation and a decrease in *w i. The difference in the amount of ELM energy loss in JT-60U plasmas rotating in opposite directions was reproduced qualitatively with JOREK. By comparing the ELM affected areas with linear eigenfunctions, it was confirmed that the difference in the linear stability property, due not to the rotation direction but to the plasma density profile, is thought to be responsible for changing the ELM energy loss just after the ELM crash. A predictive study to determine the pedestal profiles in JT-60SA was performed by updating the EPED1 model to include the rotation and *w i effects in the PBM stability analysis. It was shown that the plasma rotation predicted with the neoclassical toroidal viscosity degrades the pedestal performance by about 10% by destabilizing the PBM, but the pressure pedestal height will be high enough to achieve the target parameters required for the ITER-like shape inductive scenario in JT-60SA.
publishDate 2018
dc.date.none.fl_str_mv 2018
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/11441/99695
https://doi.org/10.1088/1361-6587/aa8bec
url https://hdl.handle.net/11441/99695
https://doi.org/10.1088/1361-6587/aa8bec
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Plasma Physics and Controlled Fusion, 60 (1), 1-11.
15K06656
633053
https://doi.org/10.1088/1361-6587/aa8bec
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 15.300724

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