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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.

Additional information

Authors: CRISANTI F ET AL, Associazione EURATOM-ENEA sulla Fusione, Centro Ricerche Frascati (IT);LITAUDON X ET AL, Association EURATOM-CEA, CEA Cadarache, F-13108 St. Paul lez Durance (FR);MAILLOUX J ET AL, Euratom-UKAEA Fusion Association, Culham Science Centre, Abingdon (GB);CONWAY G D, IPP-EURATOM Association, Max-Planck-Institut für Plasmaphysik, Garching (DE);DUX R, IPP-EURATOM Association, Max-Planck-Institut für Plasmaphysik, Garching (DE);MANTSINEN M, Association Euratom-Tekes, Espoo (FI)
Bibliographic Reference: An article published in: Physical Review Letters, Vol 88, No 14, pp.145004/1-4 (2002)
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