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          Institute: MPI für Plasmaphysik     Collection: Articles, Books, Inbooks     Display Documents

ID: 20902.0, MPI für Plasmaphysik / Articles, Books, Inbooks
Towards fully non-inductive current drive operation in JET
Authors:Litaudon, X.; Crisanti, F.; Alper, B.; Artaud, J. F.; Baranov, Y. F.; Barbato, E.; Basiuk, V.; Becoulet, A.; Becoulet, M.; Castaldo, C.; Challis, C. H.; Conway, G. D.; Dux, R.; Eriksson, L. G.; Esposito, B.; Fourment, C.; Frigione, D.; Garbet, X.; Giroud, C.; Hawkes, N. C.; Hennequin, P.; Huysmans, G. T. A.; Imbeaux, F.; Joffrin, E.; Lomas, P. J.; Lotte, P.; Maget, P.; Mantsinen, M.; Mailloux, J.; Mazon, D.; Milani, F.; Moreau, D.; Parail, V.; Pohn, E.; Rimini, F. G.; Sarazin, Y.; Tresset, G.; Zastrow, K. D.; Zerbini, M.; EFDA-JET Work Programme Collaborators
Date of Publication (YYYY-MM-DD):2002-07
Title of Journal:Plasma Physics and Controlled Fusion
Journal Abbrev.:Plasma Phys. Control. Fusion
Issue / Number:7
Start Page:1057
End Page:1086
Review Status:Peer-review
Audience:Experts Only
Abstract / Description:Quasi-steady operation has been achieved at JET in the high- confinement regime with internal transport barriers (ITBs). The ITB has been maintained up to 11s. This duration, much larger than the energy confinement time, is already approaching a current resistive time. The high-performance phase is limited only by plant constraints. The radial profiles of the thermal electron and ion pressures have steep gradients typically at mid-plasma radius. A large fraction of non-inductive current (above 80%) is sustained throughout the high-performance phase with a poloidal beta exceeding unity. The safety factor profile plays an important role in sustaining the ITB characteristics. In this regime where the self-generated bootstrap current (up to 1.0 MA) represents 50% of the total current, the resistive evolution of the non-monotonic q-profile is slowed down by using off-axis lower-hybrid current drive.
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Plasmaphysik/E2
External Affiliations:Assoc EURATOM CEA, Dept Rech Fus Controlee, CEA Cadarache, F-; 13108 St Paul Les Durance, France; EURATOM, ENEA Fus, Ctr Ric Frascati, I-00044 Frascati, Italy; EURATOM, Culham Sci Ctr, Abingdon OX14 3DB, Oxon, England; Assoc Euratom Tekes, Espoo, Finland; Assoc EURATOM OAW, OAW EURATOM Coordinat Off, A-1030 Vienna, Austria
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