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Ray tracing analysis of LH (lower hybrid) fast waves in CCT (Continuous Current Tokamak)

Conference ·
OSTI ID:6458383
Lower hybrid fast wave field profiles have been measured in the CCT tokamak. These field maps exhibit characteristics of large n/sub parallel/ wave components, with n/sub perpendicular//n/sub parallel/ approx. = 1, and the wave energy appears to be heavily damped in the toroidal direction. We use a 3-D toroidal ray tracing code to study this wave behavior. The spectral filtering of the fast wave can be partially attributed to mode conversion to the slow wave for the low n/sub parallel/ components. In most parameter regimes, subsequent strong absorption of the converted slow wave via electron Landau and higher harmonic ion damping results.
Research Organization:
California Univ., Los Angeles (USA). Tokamak Fusion Lab.
DOE Contract Number:
FG03-86ER52130; FG03-86ER53225
OSTI ID:
6458383
Report Number(s):
UCLA/PPG-1070; CONF-870570-13; ON: DE87010296
Country of Publication:
United States
Language:
English