High ICRF power in Tore Supra
- Association Euratom-CEA sur la Fusion Controlee, CEA-Cadarache, 13108 Saint Paul lez Durance Cedex (France)
- TRINITI, Troitsk, Moscow region 142092 (Russian Federation)
The aim of the ICRF system of Tore Supra is to provide high power to the plasma and to sustain long pulse operation. Good results have been obtained at high power in minority heating at 57 MHz on He(H) plasmas: 10 MW of ICRH alone have been coupled and 12 MW of combined heating (minority ICRH+LH) have been sustained for 2 s. The new lateral bumpers installed on one antenna are very satisfactory for power handling. ICRH experiments in {sup 3}He minority (42 MHz, B{sub 0}=3.7 T) have also been carried out. In particular, 6 MW have been coupled in D plasma. The influence of the {sup 3}He concentration has been studied. There is experimental evidence of electron heating with mode conversion at high concentration (10-20%) of {sup 3}He. Without {sup 3}He, 3 MW have been coupled in FWEH on similar D target plasma. A scan in plasma current has been performed (1.5{yields}1.1 MA). The bootstrap current is estimated. Some edge phenomena are observed: heating of the septum and other parts of the Faraday screen occurs when a cyclotron resonance layer is in front of the lateral protections.
- OSTI ID:
- 21210435
- Journal Information:
- AIP Conference Proceedings, Vol. 485, Issue 1; Conference: 13. topical conference on radio frequency power in plasmas, Annapolis, MD (United States), 12-14 Apr 1999; Other Information: DOI: 10.1063/1.59741; (c) 1999 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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