Influence of external 3D magnetic fields on helical equilibrium and plasma flow in RFX-mod (Articolo in rivista)

Type
Label
  • Influence of external 3D magnetic fields on helical equilibrium and plasma flow in RFX-mod (Articolo in rivista) (literal)
Anno
  • 2011-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1088/0741-3335/53/8/084005 (literal)
Alternative label
  • P. Piovesan; D. Bonfiglio; F. Bonomo; S. Cappello; L. Carraro; R. Cavazzana; M. Gobbin; L. Marrelli; P. Martin; E. Martines; B. Momo; L. Piron; M. E. Puiatti; A. Soppelsa; M. Valisa; P. Zanca; B. Zaniol, the RFX-mod team (2011)
    Influence of external 3D magnetic fields on helical equilibrium and plasma flow in RFX-mod
    in Plasma physics and controlled fusion (Print); IOP Publishing Ltd., Bristol BS1 6BE (Regno Unito)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • P. Piovesan; D. Bonfiglio; F. Bonomo; S. Cappello; L. Carraro; R. Cavazzana; M. Gobbin; L. Marrelli; P. Martin; E. Martines; B. Momo; L. Piron; M. E. Puiatti; A. Soppelsa; M. Valisa; P. Zanca; B. Zaniol, the RFX-mod team (literal)
Pagina inizio
  • 084005 (literal)
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  • Article Number: 084005 - La rivista è pubblicata anche online con ISSN 1361-6587. (literal)
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  • http://iopscience.iop.org/0741-3335/53/8/084005/ (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 53 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#note
  • Issue 8; Article Number 084005 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 14 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 8 (literal)
Note
  • ISI Web of Science (WOS) (literal)
  • Scopu (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Consorzio RFX, EURATOM-ENEA Association, Corso Stati Uniti 4, 35127 Padova, Italy (literal)
Titolo
  • Influence of external 3D magnetic fields on helical equilibrium and plasma flow in RFX-mod (literal)
Abstract
  • A spontaneous transition to a helical equilibrium with an electron internal transport barrier is observed in RFX-mod as the plasma current is raised above 1MA (Lorenzini Ret al2009Nature Phys. 5570). The helical magnetic equilibrium can be controlled with external three-dimensional (3D) magnetic fields applied by 192 active coils, providing proper helical boundary conditions either rotating or static. The persistence of the helical equilibrium is strongly increased in this way. A slight reduction in the energy confinement time of about 15% is observed, likely due to the increased plasma-wall interaction associated with the finite radial magnetic field imposed at the edge. A global helical flow develops in these states and is expected to play a role in the helical self-organization. In particular, its shear may contribute to the ITB formation and is observed to increasewith the externally applied radial field. The possible origins of this flow, from nonlinear visco-resistive magnetohydrodynamic (MHD) and/or ambipolar electric fields, will be discussed. (literal)
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