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Second Harmonic Cyclotron Heating of Sloshing Ions in a Straight Field Line Mirror
Volume 51 · Number 2T · February 2007 · Pages 160-163
Technical Paper · Open Magnetic Systems for Plasma Confinement
V. E. Moiseenko, O. Ågren (20R05)
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The second harmonic heating in mirrors is explicated. A new coordinate-independent form of the second harmonic term in the plasma dielectric response is derived. The second harmonic heating in the WKB limit is addressed and compared with minority heating. A newly developed three-dimensional model for the time-harmonic boundary problem for Maxwell's equations is used for second harmonic heating modeling in the reactor-scale straight field line mirror device. Computations show that the antenna Q is low and the regime of global resonance overlapping is in effect. Only a small portion of the wave energy transits through the cyclotron layer and penetrates to the central part of the trap. The power deposition is peaked at the plasma core.
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