30-60 MHz FWCD system on DIII-D: power division, phase control and tuning for a four-event antenna array

30-60 MHz FWCD system on DIII-D: power division, phase control and tuning for a four-event antenna array

The 2-MW fast wave current drive system on DIII-D is intended to provide near-term demonstration of up to 0.3 MA of current driven by the fast wave. The system used to drive the four-element phased antenna array which produces the required directional spectrum is presented. This system must be able...

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Bibliographische Detailangaben
Hauptverfasser: Pinsker, R.I., Mayberry, M.J., Petty, C.C., Cary, W.P., Pusl, J., Remsen, D., Baity, F., Goulding, R.H., Hofmann, D.J.
Format: Tagungsbericht
Sprache:eng
Schlagworte:
Antenna arrays
Directive antennas
Feeds
Impedance matching
Inductance
Loaded antennas
Mutual coupling
Phase control
Phased arrays
Tokamaks
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Beschreibung
Zusammenfassung:The 2-MW fast wave current drive system on DIII-D is intended to provide near-term demonstration of up to 0.3 MA of current driven by the fast wave. The system used to drive the four-element phased antenna array which produces the required directional spectrum is presented. This system must be able to cope with strong coupling between antenna elements and the time-varying plasma load seen by the antennas. Computer modeling shows that this system should be able to maintain a directional spectrum at full power under most anticipated load conditions.< >
DOI:10.1109/FUSION.1991.218938