Poloidal field effects on fundamental minority ion cyclotron resonance heating in a tokamak plasma

Minority ion fundamental cyclotron resonance is studied in a large tokamak in which the geometrical optics approximation applies off resonance and the minority average speed is less than the wave phase speeds. Poloidal equilibrium magnetic field effects are included, which lead to nontrivially nonlo...

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Bibliographic Details
Published in:Physics of plasmas 2000-05, Vol.7 (5), p.1467-1478
Main Authors: Jun, S. C., Imre, Kaya, Stevens, D. C., Weitzner, Harold, Chang, C. S.
Format: Article
Language:English
Subjects:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ICR HEATING
PLASMA CONFINEMENT
PLASMA HEATING
THEORETICAL DATA
TOKAMAK DEVICES
TOROIDAL CONFIGURATION
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Summary:Minority ion fundamental cyclotron resonance is studied in a large tokamak in which the geometrical optics approximation applies off resonance and the minority average speed is less than the wave phase speeds. Poloidal equilibrium magnetic field effects are included, which lead to nontrivially nonlocal integrodifferential equations for the wave fields. Exact reciprocity relation is given as well as explicit analytic solutions for the transmission coefficients for both the high and low field side incidences. Numerical solutions are needed only for the high field side incident reflection coefficient. Numerical schemes are described and numerical results are presented together with a reliable error bound. Typically, energy absorption increases with poloidal field. The energy absorption increases with minority density at low values of minority density. However, it decreases at high minority density. Poloidal field effects weaken the dependence of energy absorption on the toroidal wave number.
ISSN:1070-664X
1089-7674
DOI:10.1063/1.873966