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Abstract

Fully non-inductive discharges are performed on the Tore Supra tokamak using Lower Hybrib (LH) waves in a current drive scheme. The MHD aspect is a crucial issue for these discharges, since after hitting an MHD limit it may run into a regime where a strong permanent MHD activity develops. This so-called MHD regime degrades fast electron confinement as well as LHCD efficiency and electron confinement in the plasma core. In the 2003 campaign, a milestone has been reached with the injection of more than 1 GJ of energy in the tokamak, in stationary discharges lasting more than 6 minutes. But the MHD regime as been encountered in several discharges, while the record discharges have shown a very stationary MHD activity in the plasma core without triggering the MHD regime.

Additional information

Authors: MAGET P, Departement de Recherches sur la Fusion Controlee, Association Euratom-CEA sur la Fusion, CEA Cadarache, Saint-Paul-lez-Durance (FR) 2004
Bibliographic Reference: An oral paper given at: 12th International Congress on Plasma Physics Organised by:CEA Research Centres, France Held at: Acropolis conference center, Nice (FR)
Availability: Available from Association EURATOM-CEA, Departement de Recherches sur la Fusion Controlee, CEA Cadarache, F-13108 St Paul-Lez-Durance, France Tel: (+33) 4 42 25 70 01; Fax: (+33) 4 42 25 64 21 E-mail: dirdrfc@drfc.cad.cea.fr
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