W N Hugrass et al 2008 Plasma Phys. Control. Fusion 50 055008 doi:10.1088/0741-3335/50/5/055008
Plasma-circuit interactions in rotating magnetic field current drive
W N Hugrass1, T Okada2 and M Ohnishi2
Show affiliationsThe interactions between the plasma and the radio frequency circuit in rotating magnetic field (RMF) current drive experiments are investigated numerically. A simplified 1D model for slowly varying conditions is used to study the penetration of the RMF into the plasma. The RMF is assumed to be generated using a two-phase two-coil arrangement and the effect of the spatial harmonics of the field is included up to the ninth harmonic. Both the coil inductance and resistance vary as the RMF penetrates into the plasma and thus influence the current in the antenna coils. The simulation results help in understanding the complex interactions between the radio frequency circuit and the plasma discharge and may help in optimizing the performance of RMF current drive experiments.
- PACS
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52.55.Wq Current drive; helicity injection
52.40.Fd Plasma interactions with antennas; plasma-filled waveguides
- Subjects
- Dates
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Issue 5 (May 2008)
Received 18 December 2007, in final form 18 February 2008
Published 2 April 2008
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Plasma-circuit interactions in rotating magnetic field current drive
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