Analysis of disruptive discharges during density limit experiments on the HT-7 Tokamak

Detalhes bibliográficos
Autor(a) principal: Asif,M.
Data de Publicação: 2006
Outros Autores: Gao,X.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Brazilian Journal of Physics
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332006000200011
Resumo: In this work, we discuss the preliminary analysis of some disruptive plasma discharges with a moveable graphite limiter on the HT-7 tokamak, which has been developed in order to investigate the influence of the horizontal plasma position on the density limit. What we have observed is that the m=2, MHD component dominates during almost the whole discharge duration, when the density limit is approached at values of the edge safety factor 3 < q(a) < 3.5. For the poloidal-magnetic-field fluctuations observed at the Mirnov coils, Mirnov-coil analysis shows that the m = 2 mode is unstable, which finally causes disruption.
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spelling Analysis of disruptive discharges during density limit experiments on the HT-7 TokamakMoveable limiterMagneto-hydrodynamicMirnov coilDisruptionsIn this work, we discuss the preliminary analysis of some disruptive plasma discharges with a moveable graphite limiter on the HT-7 tokamak, which has been developed in order to investigate the influence of the horizontal plasma position on the density limit. What we have observed is that the m=2, MHD component dominates during almost the whole discharge duration, when the density limit is approached at values of the edge safety factor 3 < q(a) < 3.5. For the poloidal-magnetic-field fluctuations observed at the Mirnov coils, Mirnov-coil analysis shows that the m = 2 mode is unstable, which finally causes disruption.Sociedade Brasileira de Física2006-03-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332006000200011Brazilian Journal of Physics v.36 n.1b 2006reponame:Brazilian Journal of Physicsinstname:Sociedade Brasileira de Física (SBF)instacron:SBF10.1590/S0103-97332006000200011info:eu-repo/semantics/openAccessAsif,M.Gao,X.eng2006-04-10T00:00:00Zoai:scielo:S0103-97332006000200011Revistahttp://www.sbfisica.org.br/v1/home/index.php/pt/ONGhttps://old.scielo.br/oai/scielo-oai.phpsbfisica@sbfisica.org.br||sbfisica@sbfisica.org.br1678-44480103-9733opendoar:2006-04-10T00:00Brazilian Journal of Physics - Sociedade Brasileira de Física (SBF)false
dc.title.none.fl_str_mv Analysis of disruptive discharges during density limit experiments on the HT-7 Tokamak
title Analysis of disruptive discharges during density limit experiments on the HT-7 Tokamak
spellingShingle Analysis of disruptive discharges during density limit experiments on the HT-7 Tokamak
Asif,M.
Moveable limiter
Magneto-hydrodynamic
Mirnov coil
Disruptions
title_short Analysis of disruptive discharges during density limit experiments on the HT-7 Tokamak
title_full Analysis of disruptive discharges during density limit experiments on the HT-7 Tokamak
title_fullStr Analysis of disruptive discharges during density limit experiments on the HT-7 Tokamak
title_full_unstemmed Analysis of disruptive discharges during density limit experiments on the HT-7 Tokamak
title_sort Analysis of disruptive discharges during density limit experiments on the HT-7 Tokamak
author Asif,M.
author_facet Asif,M.
Gao,X.
author_role author
author2 Gao,X.
author2_role author
dc.contributor.author.fl_str_mv Asif,M.
Gao,X.
dc.subject.por.fl_str_mv Moveable limiter
Magneto-hydrodynamic
Mirnov coil
Disruptions
topic Moveable limiter
Magneto-hydrodynamic
Mirnov coil
Disruptions
description In this work, we discuss the preliminary analysis of some disruptive plasma discharges with a moveable graphite limiter on the HT-7 tokamak, which has been developed in order to investigate the influence of the horizontal plasma position on the density limit. What we have observed is that the m=2, MHD component dominates during almost the whole discharge duration, when the density limit is approached at values of the edge safety factor 3 < q(a) < 3.5. For the poloidal-magnetic-field fluctuations observed at the Mirnov coils, Mirnov-coil analysis shows that the m = 2 mode is unstable, which finally causes disruption.
publishDate 2006
dc.date.none.fl_str_mv 2006-03-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332006000200011
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332006000200011
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0103-97332006000200011
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Sociedade Brasileira de Física
publisher.none.fl_str_mv Sociedade Brasileira de Física
dc.source.none.fl_str_mv Brazilian Journal of Physics v.36 n.1b 2006
reponame:Brazilian Journal of Physics
instname:Sociedade Brasileira de Física (SBF)
instacron:SBF
instname_str Sociedade Brasileira de Física (SBF)
instacron_str SBF
institution SBF
reponame_str Brazilian Journal of Physics
collection Brazilian Journal of Physics
repository.name.fl_str_mv Brazilian Journal of Physics - Sociedade Brasileira de Física (SBF)
repository.mail.fl_str_mv sbfisica@sbfisica.org.br||sbfisica@sbfisica.org.br
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