Measurements of the oscillating fields and the time-averaged forces in rotating magnetic field current drive

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Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/231689

Title: Measurements of the oscillating fields and the time-averaged forces in rotating magnetic field current drive
Author(s): Collins, G. A.; Durance, G.; Tendys, J.
Abstract: Measurement of the RF (radio-frequency) magnetic field about the equatorial plane of the rotamak has enabled the distribution of the oscillating currents to be derived. The time-averaged forces, produced by the interaction of these currents with the oscillating field, have been estimated. In the standard field-reversed configuration there is a radial force, which helps to confine the plasma pressure, and a toroidal force, which drives the equilibrium current. In compact tokamak configurations there is an additional poloidal force, which produces a diamagnetic current. As the toroidal field increases, penetration of the RF fields improves owing to the excitation of a whistler wave mode. The connection between the rotating magnetic field technique and fast wave current drive is explained.
Publication type: Journal article
Source: Journal of Plasma Physics, Vol. 40, no. 1 (Aug 1988), pp. 127-142
Publication year: 1988
FOR Code(s): 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
Keyword(s): Magnetohydrodynamics; Oscillating fields; Plasmas; Rotamak; Rotating magnetic field; Tokamak devices
Publisher: Cambridge University Press
ISSN: 0022-3778
Publisher URL: http://dx.doi.org/10.1017/S0022377800013167
Peer reviewed