Flow measurements and modelling in helical RFX-mod equilibria (Articolo in rivista)

Type
Label
  • Flow measurements and modelling in helical RFX-mod equilibria (Articolo in rivista) (literal)
Anno
  • 2011-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1088/0029-5515/51/12/123007 (literal)
Alternative label
  • F. Bonomo; D. Bonfiglio; P. Piovesan; L. Piron; B. Zaniol; S. Cappello; L. Carraro; R. Cavazzana; M. Gobbin; L. Marrelli; E. Martines; B. Momo; M.E. Puiatti; M. Valisa (2011)
    Flow measurements and modelling in helical RFX-mod equilibria
    in Nuclear fusion; International Atomic Energy Agency, Vienna (Austria)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • F. Bonomo; D. Bonfiglio; P. Piovesan; L. Piron; B. Zaniol; S. Cappello; L. Carraro; R. Cavazzana; M. Gobbin; L. Marrelli; E. Martines; B. Momo; M.E. Puiatti; M. Valisa (literal)
Pagina inizio
  • 123007 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#altreInformazioni
  • Article Number 123007. La rivista è pubblicata anche online con ISSN 1741-4326 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://iopscience.iop.org/0029-5515/51/12/123007/ (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 51 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#note
  • Number 12, Article Number 123007 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 10 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 12 (literal)
Note
  • Scopu (literal)
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Consorzio RFX, Euratom/ENEA Association, Padova, Italy (literal)
Titolo
  • Flow measurements and modelling in helical RFX-mod equilibria (literal)
Abstract
  • In the reversed field pinch experiment RFX-mod, plasma currents larger than 1 MA show a spontaneous transition from an axisymmetric to a helical configuration, where electron internal transport barriers (eITB) are observed in the proximity of the maximum of the q safety factor. 3D MHD simulations predict a helical flow pattern associated with the helical deformation of the magnetic flux surfaces. This paper reports the recent experimental findings on plasma flow in these helical regimes. Passive spectroscopy measurements of carbon and boron line Doppler shift allow the reconstruction of the m = 1 component of the velocity pattern associated with the helical equilibrium in a poloidal cross-section. The helical plasma flow is observed to form a m = 1 convective cell creating a localized sheared flow outside the region of strong electron temperature gradients characterizing the eITB. The experimental pattern is compared with the results of 3D MHD simulations (by means of the SpeCyl code). While the code predicts a flow shear peaking in the proximity of the null of the magnetic shear, where the safety factor is maximum, experimentally the maximum flow shear is found to be more external, leaving as a still open question the role played by the flow shear for the thermal barrier formation in RFX-mod helical plasmas. (literal)
Editore
Prodotto di
Autore CNR
Insieme di parole chiave

Incoming links:


Autore CNR di
Prodotto
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi
Editore di
Insieme di parole chiave di
data.CNR.it