Numerical modeling of lower hybrid heating and current drive
The generation of currents in toroidal plasma by application of waves in the lower hybrid frequency range involves the interplay of several physical phenomena which include: wave propagation in toroidal geometry, absorption via wave-particle resonances, the quasilinear generation of strongly nonequilibrium electron and ion distribution functions, and the self-consistent evolution of the current density in such a nonequilibrium plasma. We describe a code, LHMOD, which we have developed to treat these aspects of current drive and heating in tokamaks. We present results obtained by applying the code to a computation of current ramp-up and to an investigation of the possible importance of minority hydrogen absorption in a deuterium plasma as the ''density limit'' to current drive is approached.
- Research Organization:
- Princeton Univ., NJ (USA). Plasma Physics Lab.
- DOE Contract Number:
- AC02-76CH03073
- OSTI ID:
- 5792662
- Report Number(s):
- PPPL-2272; ON: DE86009750
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
700101* -- Fusion Energy-- Plasma Research-- Confinement
Heating
& Production
ABSORPTION
CLOSED PLASMA DEVICES
COMPUTER CODES
CURRENT-DRIVE HEATING
ELECTRIC HEATING
HEATING
HIGH-FREQUENCY HEATING
JOULE HEATING
L CODES
LOWER HYBRID HEATING
NUMERICAL SOLUTION
PLASMA HEATING
QUASILINEAR PROBLEMS
RESISTANCE HEATING
THERMONUCLEAR DEVICES
TOKAMAK DEVICES