Other
Scientific paper
Sep 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aipc..485..124n&link_type=abstract
The thirteenth topical conference on radio frequency power in plasmas. AIP Conference Proceedings, Volume 485, pp. 124-127 (199
Other
2
Theory, Design, And Computerized Simulation, Tokamaks, Spherical Tokamaks, Electromagnetic Waves, Plasma Heating By Particle Beams
Scientific paper
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 3He minority (42 MHz, B0=3.7 T) have also been carried out. In particular, 6 MW have been coupled in D plasma. The influence of the 3He concentration has been studied. There is experimental evidence of electron heating with mode conversion at high concentration (10-20%) of 3He. Without 3He, 3 MW have been coupled in FWEH on similar D target plasma. A scan in plasma current has been performed (1.5-->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.
Basiuk Vincent
Beaumount B.
Becoulet Alain
Bergeaud V.
Bibet Ph.
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