Triggering of internal transport barrier in JET (Articolo in rivista)

Type
Label
  • Triggering of internal transport barrier in JET (Articolo in rivista) (literal)
Anno
  • 2002-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1088/0741-3335/44/8/320 (literal)
Alternative label
  • Joffrin E. (1), Gorini G. (2), Challis C. D. (3), Hawkes N. C. (3), Hender T. C. (3), Howell D. F. (3), Maget P. (1), Mantica P. (2), Mazon D. (1), Sharapov S. E. (3), Tresset G. (1); and contributors to the EFDA-JET Workprogramme (2002)
    Triggering of internal transport barrier in JET
    in Plasma physics and controlled fusion (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Joffrin E. (1), Gorini G. (2), Challis C. D. (3), Hawkes N. C. (3), Hender T. C. (3), Howell D. F. (3), Maget P. (1), Mantica P. (2), Mazon D. (1), Sharapov S. E. (3), Tresset G. (1); and contributors to the EFDA-JET Workprogramme (literal)
Pagina inizio
  • 1739 (literal)
Pagina fine
  • 1752 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#altreInformazioni
  • Pubblicazione su rivista scientifica internazionale ad alta diffusione con Impact Factor nel 2002 pari a 2.121 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://iopscience.iop.org/0741-3335/44/8/320/ (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 44 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#descrizioneSinteticaDelProdotto
  • Studio sperimentale sull'innesco di barriere interne nella diffusione del calore correlate allo shear magnetico nel plasma del tokamak JET (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • (1) Euratom-CEA Association, Cadarache, France; (2) IFP CNR, EURATOM-ENEA-CNR Assoc., Milano, Italy; (3) Euratom/UKAEA Fusion Association, Abingdon, UK (literal)
Titolo
  • Triggering of internal transport barrier in JET (literal)
Abstract
  • Internal transport barriers (ITBs) can be produced in JET by the application of strong additional heating during the current rise phase of the plasma discharge. Using up to 3 MW of lower hybrid power to tailor the q-profile prior to the main heating phase, a large variety of q-profiles ranging from low positive to strong negative central shear have been obtained during the current rise (0.4 MA/s). With negative central magnetic shear s = (r/q)(dr/dq), the analysis of ITB triggering reveals a correlation between the formation of the ITB and qmin reaching an integer value (q = 2 or q = 3). This observation is confirmed by the analysis of the Alfven cascades. The minimum power required to access regimes with ITBs is probably related to the transport and magnetohydrodynamic properties of integer magnetic surfaces. Laser ablation and shallow pellet injection have also been attempted in recent JET ITB triggering experiments. (literal)
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