Current profile modification experiments in EXTRAP T2R (Articolo in rivista)

Type
Label
  • Current profile modification experiments in EXTRAP T2R (Articolo in rivista) (literal)
Anno
  • 2004-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1088/0741-3335/46/1/009 (literal)
Alternative label
  • Cecconello, M; Malmberg, JA; Spizzo, G; Chapman, BE; Gravestjin, RM; Franz, P; Piovesan, P; Martin, P; Drake, JR (2004)
    Current profile modification experiments in EXTRAP T2R
    in Plasma physics and controlled fusion (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Cecconello, M; Malmberg, JA; Spizzo, G; Chapman, BE; Gravestjin, RM; Franz, P; Piovesan, P; Martin, P; Drake, JR (literal)
Pagina inizio
  • 145 (literal)
Pagina fine
  • 161 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://stacks.iop.org/pp/46/145 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 46 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 17 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Cecconello, M; Malmberg, JA; Drake, JR: Division of Fusion Plasma Physics (Association EURATOM/VR), Alfvén Laboratory, Royal Institute of Technology, SE 100 44, Stockholm, Sweden Spizzo, Franz, Piovesan, Martin: Consorzio RFX, Associazione EURATOM-ENEA sulla Fusione, Padova, Italy Chapman: Department of Physics, University of Wisconsin-Madison, Madison, WI 53706, USA Gravestjin, RM: Department of Atomic and Molecular Physics, Royal Institute of Technology, SE 100 44, Stockholm, Sweden (literal)
Titolo
  • Current profile modification experiments in EXTRAP T2R (literal)
Abstract
  • Pulsed poloidal current drive (PPCD) experiments have been conducted in the resistive shell EXTRAP T2R reversed-field pinch experiment. During the current profile modification phase, the fluctuation level of the m = 1 internally resonant tearing modes decreases, and the velocity of these modes increases. The m = 0 modes are not affected during PPCD, although termination occurs with a burst in the m = 0 amplitude. The PPCD phase is characterized by an increase in the central electron temperature (up to 380 eV) and in the soft x-ray signal. Spectroscopic observations confirm an increase in the central electron temperature. During PPCD, the plasma poloidal beta increases to 14%, and the estimated energy confinement time doubles, reaching 380?s. The reduction in the fluctuation level and the corresponding increase in the energy confinement time are qualitatively consistent with a reduction in parallel transport along stochastic magnetic field lines. (literal)
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