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The ECRH/ECCD system on Tore Supra, with its front steering antenna and its long pulse capability makes it ideal for testing essential technical and physics issues for ITER. This paper reports the experimental results obtained and the technical evolution of the system since the last �Strong microwaves in Plasmas� workshop. The observation of a clear synergistic effect between Electron cyclotron current drive and Lower Hybrid Current Drive in fully non-inductively driven plasmas allowing a significant reduction in the Lower hybrid power required to drive the plasma current is one of the major results of recent experiments. In another series of experiments ECCD has been exploited for studies of advanced scenarios with strongly or weakly reversed shear, resulting in high core electron temperatures and steep gradients. The operation of the system was halted for a year following a water leak in the armoured water bellows feeding cooling water to the antenna mobile mirror. This incident highlighted the difficulty of cooling mobile components inside the vacuum vessel and a major modification in the mirror cooling system was implemented as a consequence. With these modifications in the first test of control of the ECRH/CD injection angle in real time should proceed in upcoming experimental campaign.

Additional information

Authors: LENNHOLM M, Département de Recherches sur la Fusion Contrôlée, Association Euratom-CEA sur la Fusion, CEA Cadarache, Saint-Paul-lez-Durance (FR)
Bibliographic Reference: An oral paper given at: 6th International Workshop on Strong Microwaves in Plasmas Organised by: Institute of Applied Physics of the Russian Academy of Sciences (RU) Held on board a river cruise boat from Nizhny Novgorod to Saint Petersb
Availability: Available from Association EURATOM-CEA, Département de Recherches sur la Fusion Contrôlée, 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:
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