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Abstract

In the high power ICRH experiments performed in TFR in 1981, plasma heating was limited by radiation resulting from a large influx of metallic impurities. Protecting the limiters and the sides of the antennas with carbon reduces the central radiation by an order of magnitude : ion heating is now reaching a stationary level instead of decreasing after 25-30 ms as observed before. However, the fast increase of Te, characteristic of the wave conversion mechanism, is abruptly interrupted after 10 ms RF. This new limitation, which tends to indicate an increase of the electron energy transport coefficients during the RF pulse, may be correlated with an increase of the plasma turbulence detected by CO-2 laser scattering.

Additional information

Authors: TFR GROUP, CEA, DEPARTEMENT DE RECHERCHES SUR LA FUSION CONTROLEE, FONTENAY-AUX-ROSES (FRANCE);ADAM J CEA, DEPARTEMENT DE RECHERCHES SUR LA FUSION CONTROLEE, FONTENAY-AUX-ROSES (FRANCE), CEA, DEPARTEMENT DE RECHERCHES SUR LA FUSION CONTROLEE, FONTENAY-AUX-ROSES (FRANCE)
Bibliographic Reference: 4TH INTERNATIONAL SYMPOSIUM ON HEATING IN TOROIDAL PLASMAS, ROMA (ITALY), MARCH 21-28, 1984 VOL. I, PP. 277-290, 1478 P., VOL. I AND VOL. II, 1984 WRITE TO MONOTYPIA FRANCHI, ST. LUCIA + VIALE UMBRIA NO. 28, 06012 CITTA DI CASTELLO, PERUGIA (ITALY), USD 6
Record Number: 1989124025000 / Last updated on: 1987-01-01
Category: PUBLICATION
Available languages: en