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Document Version Version Comment Date Status
59920.0 [No comment] 15.11.2006 15:44 Released

ID: 59920.0, MPI für Plasmaphysik / Conference Papers
Progress towards steady-state operation and real time control of internal transport barriers in JET
Authors:Litaudon, X.; Bécoulet, A.; Crisanti, F.; Wolf, R. C.; Baranov, Yu. F.; Barbato, E.; Bécoulet, M.; Budny, R.; Castaldo, C.; Cesario, R.; Challis, C. D.; Conway, G. D.; De Baar, M. R.; De Vries, P.; Dux, R.; Eriksson, L. G.; Esposito, B.; Felton, R.; Fourment, C.; Frigione, D.; Garbet, X.; Giannella, R.; Giroud, C.; Gorini, G.; Hawkes, N. C.; Hellsten, T.; Hender, T. C.; Hennequin, P.; Hogeweij, G. M. D.; Huysmans, G. T. A.; Imbeaux, F.; Joffrin, E.; Lomas, P. J.; Lotte, Ph.; Maget, P.; Mailloux, J.; Mantica, P.; Mantsinen, M. J.; Mazon, D.; Moreau, D.; Parail, V.; Pericoli, V.; Rachlew, E.; Riva, M.; Rimini, F.; Sarazin, Y.; Stratton, B. C.; Tala, T. J. J.; Tresset, G.; Tudisco, O.; Zabeo, L.; Zastrow, K.-D.; JET EFDA Contributors
Publisher:International Atomic Energy Agency
Place of Publication:Vienna
Date of Publication (YYYY-MM-DD):2003
Title of Proceedings:Fusion Energy 2002
Sequence Number:EX/C3-4
Physical Description:CD-ROM
Name of Conference/Meeting:19. Conference on Fusion Energy
Place of Conference/Meeting:Lyon (FR)
(Start) Date of Conference/Meeting
End Date of Conference/Meeting 
Review Status:Internal review
Audience:Experts Only
Abstract / Description:In JET advanced tokamak research mainly focuses on plasmas with internal transport barriers (ITBs), generated by modifications of the current profile. The formerly developed optimised shear regime with low magnetic shear in the plasma center has been extended to deeply reversed magnetic shear configurations. ITBs occur at much lower access powers. The achievement of high fusion performance is reported in deeply reversed magnetic shear configuration. The generation of plasmas with wide ITBs in this configuration has allowed an extension of the accessible normalised toroidal beta at high magnetic field. We report on the successful sustainement and control of the electron and ion ITB in full current drive operation with a large fraction of bootstrap current. Progress towards the steady state capability of ITB plasmas includes techniques to avoid strong ELM activity and the newly developed real time control of the local ITB strength. Thanks to the real time control of the ITB characteristics the improved confinement state is maintained in a more reproducible and stable manner in quasi-stationary conditions.
External Publication Status:published
Document Type:Conference-Paper
Communicated by:N. N.
Affiliations:MPI für Plasmaphysik/E2
External Affiliations:Association Euratom CEA-FRANCE, St Paul Lez Durance, France; Associazione EURATOM-ENEA sulla Fusione, Centre Ricerche Frascati, Italy; Institut für Plasmaphysik, Association EURATOM-FZJ, Jülich, Germany; UKAEA-EURATOM Association, Culham Science Centre, Abingdon, UK; Princeton Plasma Physics Laboratory, Princeton, USA; Associatie EURATOM-FOM, TEC Cluster, Nieuwegein, The Netherlands; Instituto di Fisica del Plasma, EURATOM-ENEA-CNR Association, Milan, Italy; Alfven Laboratory, KTH, Association EURATOM/VR, Stockholm, Sweden; Association EURATOM-TEKES, VTT Chemical Technology, Finland