LOW-Q MHD ACTIVITY STUDIES ON TFR.
T.F.R. has been operated in low q(a) conditions, with a special emphasis on the understanding of the so called current limit. Several schemes have been used, one of the most promising being magnetic surface skinning with a variable toroidal field. Detailed analysis of Mirnov coil and soft X-ray signals is presented and the results discussed. Low q(a) - i.e. high current - discharges have a high poloidal magnetic energy content, which has to be dissipated during the post-disruptive current decrease. The electromagnetic energy balance during this phase is analyzed and the dissipation mechanisms identified. Consequences for large tokamaks concerning low-q operation and thermal load associated to major disruptions are deduced.
Bibliographic Reference: WRITE TO CEA MENTIONING REPORT EUR-CEA-FC 1196 EN, 1983
Availability: Can be ordered online
Record Number: 1989122017600 / Last updated on: 1987-01-01
Available languages: en