SIMULATION OF PLASMA CONTROL IN THE TCV TOKAMAK WITH HIGH FREQUENCY STABILIZATION
The Tokamak Simulation Code (TSC) is used to study evolution, control, and growth rates of resistive, axisymmetric vertical instability in the TCV tokamak. TCV is currently under construction, its parameters are: B=1.43 T, R=0.87 m, a=0.24 m, b/a up to 3/1, l-p up to 1200 kAmp. The axisymmetric resistive growth rate is calculated for various equilibria, passively stabilized by the TCV vacuum vessel. There exists a range of plasmas which are ideally stable, but which have resistive growth rates faster than can be controlled with 100 Hz, 12 pulse thyristor power supplies planned for the shaping coils. We consider controlling these high growth rate plasmas by a high frequency, relatively low power radial field superposed on the slower, higher moment shaping fields. Detailed TSC evolutions showing the response of the plasma to these high frequency fields and the augmented operational range of TCV will be presented.
Bibliographic Reference: 15TH EUROPEAN CONFERENCE ON CONTROLLED FUSION AND PLASMA HEATING, DUBROVNIK (YUGOSLAVIA), MAY, 16-20, 1988, AVAILABILITY: CEC-LUXEMBOURG, DG-XIII-C-3, POB 1907, MENTIONING PAPER EN 34069 ORA
Availability: Can be ordered online
Record Number: 1989126118600 / Last updated on: 1989-06-01
Available languages: en