PERIODIC LOOP - ANTENNA COUPLING TO ALFVEN WAVES
Radiofrequency coupling to the Alfven resonance using a periodic loop antenna array is studied in a slab plasma model. The plasma surface impedance required for the coupling calculations is, however, computed in the cylindrical geometry. For the ASDEX UPGRADE and the NET like parameters it is possible to attain a antenna loading of R about 1 OMEGA and Q about under optimal conditions, with the stipulation that the resonant Alfven surface may be located at two-thirds the plasma radius. The coupling remains efficient over a wide range of density and magnetic field variations and scales favorably with respect to increasing machine dimensions.
Bibliographic Reference: COURSE AND WORKSHOP ON APPLICATIONS OF RF WAVES TO TOKAMAK PLASMAS, VILLA MONASTERO, VARENNA (ITALY), SEPT. 5-14, 1985 PP. 817-828, VOL. II 908 P., 1985, VOL. I AND VOL. II WRITE TO MONOTYPIA FRANCHI, VIALE UMBRIA 28/C, 06012 CITTA DI CASTELLO, PERUGIA (I
Record Number: 1989124100800 / Last updated on: 1987-01-01
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