Angular momentum studies with NBI modulation in JET (Articolo in rivista)

Type
Label
  • Angular momentum studies with NBI modulation in JET (Articolo in rivista) (literal)
Anno
  • 2009-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1088/0029-5515/49/8/085010 (literal)
Alternative label
  • Tardini, G.[ 1 ] ; Ferreira, J.[ 2 ] ; Mantica, P.[ 3 ] ; Peeters, A. G.[ 4 ] ; Tala, T.[ 5 ] ; Zastrow, K. D.[ 6 ] ; Brix, M.[ 6 ] ;Giroud, C.[ 6 ] ; Pereverzev, G. V.[ 1 ]; and JET-EFDA contributors (2009)
    Angular momentum studies with NBI modulation in JET
    in Nuclear fusion
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Tardini, G.[ 1 ] ; Ferreira, J.[ 2 ] ; Mantica, P.[ 3 ] ; Peeters, A. G.[ 4 ] ; Tala, T.[ 5 ] ; Zastrow, K. D.[ 6 ] ; Brix, M.[ 6 ] ;Giroud, C.[ 6 ] ; Pereverzev, G. V.[ 1 ]; and JET-EFDA contributors (literal)
Pagina inizio
  • 085010 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://iopscience.iop.org/0029-5515/49/8/085010/ (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 49 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • [ 1 ] EURATOM MPI Assoc, Max Planck Inst Plasmaphys, D-85748 Garching, Germany [ 2 ] EURATOM IST Assoc, Ctr Fusao Nucl, P-1049001 Lisbon, Portugal [ 3 ] EURATOM ENEA CNR Assoc, Istituto di Fisica del Plasma, I-20125 Milan, Italy [ 4 ] Univ Warwick, Dept Phys, Ctr Fus Space & Astrophys, Coventry CV4 7AL, W Midlands, England [ 5 ] Assoc EURATOM Tekes, FIN-02044 Espoo, Finland [ 6 ] Culham Sci Ctr, EURATOM UKAEA Fus Assoc, Abingdon OX14 3DB, Oxon, England [ 7 ] Culham Sci Ctr, JET EFDA, Abingdon OX14 3DB, Oxon, England (literal)
Titolo
  • Angular momentum studies with NBI modulation in JET (literal)
Abstract
  • In this work we apply the neutral beam modulation technique to a set of JET discharges in order to obtain information on the radial transport of the toroidal angular momentum. This perturbative technique allows one to separate possible pinch terms from the momentum diffusivity, otherwise impossible to decouple with a steady-state momentum balance analysis alone. In this paper a model based on the ion temperature gradient turbulence, which consists of a constant and uniform Prandtl number of the order unity combined with an inward Coriolis pinch term predicted by the gyro-kinetic theory, is validated against data from the JET experiment. The machine size and the good space and time resolution of the charge exchange system make JET particularly suitable for this study. The experimental data are matched with good accuracy, both the steady-state and the transient propagation of the momentum perturbation, choosing a Prandtl number slightly above one, provided the Coriolis pinch is included. Sensitivity studies assess the accuracy range of our predictive modelling. (literal)
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