Current Drive by Fast Magnetosonic Waves near the Lower Hybrid Frequency in the JIPP T-IIU Tokamak
- 12 May 1986
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 56 (19) , 2040-2043
- https://doi.org/10.1103/physrevlett.56.2040
Abstract
Current drive by fast magnetosonic waves is successfully performed in the JIPP T-IIU tokamak by means of a four-element dipole antenna array with a Faraday shield. A plasma current of about 50 kA is sustained by an rf power of about 80 kW in a low-density plasma (3 × ) with an efficiency comparable to that of slow-wave current drive. A density limit for fast magnetosonic current drive is observed, contrary to theoretical expectations based on linear wave propagation.
Keywords
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