JET quasistationary internal-transport-barrier operation with active control of the pressure profile

F. Crisanti, X. Litaudon, J. Mailloux, D. Mazon, E. Barbato, Y. Baranov, A. Bécoulet, M. Bécoulet, C.D. Challis, G.D. Conway, R. Dux, L.-G. Eriksson, B. Esposito, D. Frigione, P. Hennequin, C. Giroud, N. Hawkes, G.T.A. Huysmans, F. Imbeaux, E. JoffrinP.J. Lomas, P. Lotte, P. Maget, M.J. Mantsinen, D.J.J.S.M. Moreau, F. Rimini, M. Riva, Y. Sarazin, G. Tresset, A.A. Tuccillo, K.-D. Zastrow

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71 Citations (Scopus)

Abstract

Quasistationary operation has been achieved on the Joint European Torus tokamak in internal-transport-barrier (ITB) scenarios, with the discharge time limited only by plant constraints. Full current drive was obtained over all the high performance phase by using lower hybrid current drive. For the first time feedback control on the total pressure and on the electron temperature profile was implemented by using, respectively, the neutral beams and the ion-cyclotron waves. Although impurity accumulation could be a problem in steady state ITBs, these experiments bring some elements to answer to it.
Original languageEnglish
Article number145004
JournalPhysical Review Letters
Volume88
Issue number14
DOIs
Publication statusPublished - 1 Apr 2002
Externally publishedYes

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