A MODULAR HELICAL ANTENNA FOR ALFVEN WAVE HEATING IN TOKAMAKS
The performance of a modular helical antenna for Alfven wave heating is analyzed in the framework of 1-D cylindrical theory, including finite frequency (i.e. Hall current) effects. It is shown that modes with either positive or negative helicity can be preferentially excited in the plasma by tilting the antenna with respect to the polodial magnetic field. Excitation of pure modes, which is crucial for optimizing the power deposition profile, can be achieved with surprisingly small tilt angles.
Bibliographic Reference: NUCLEAR FUSION, VOL.24 (1984), NO. 12, PP. 1679-1682
Record Number: 1989123048100 / Last updated on: 1987-01-01
Available languages: en