ALFVEN WAVE COUPLING IN LARGE TOKAMAKS
The possible problems and advantages of plasma heating in a large tokamak using Alfv'en waves are considered. We discuss changes in the physics of the Alfv'en Wave Heating scheme which result from an increase in the size and performance of the tokamak. The results of calculations are presented which demonstrate that antenna loading scales with frequency and vessel dimensions according to ideal MHD theory. A sample scaling of experimental antenna loading measured on TCA to the loading predicted for NET is presented. We discuss whether this loading leads to a realistic antenna design. The choice of a suitable antenna configuration, mode number and operating frequency is presented for NET parameters with a typical operating scenario. The question of designing recessed antennas for a NET geometry is addressed with respect to the predicted coupling.
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 34064 ORA
Availability: Can be ordered online
Record Number: 1989126118100 / Last updated on: 1989-06-01
Available languages: en