http://www.cnr.it/ontology/cnr/individuo/prodotto/ID26077
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)
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- Article Number: 084005 -
La rivista è pubblicata anche online con ISSN 1361-6587. (literal)
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- Issue 8; Article Number 084005 (literal)
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- 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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