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Ray tracing analysis of LH fast waves in CCT

Conference · · AIP Conf. Proc.; (United States)
OSTI ID:6889347
Lower hybrid fast wave field profiles have been measured in the CCT tokamak. These field maps exhibit characteristics of large n/sub ///sub // wave components, with n/sub perpendicular//n/sub ///sub //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 ///sub // components. In most parameter regimes, subsequent strong absorption of the converted slow wave via electron Landau and higher harmonic ion damping results.
Research Organization:
University of California, Los Angeles, CA 90024
OSTI ID:
6889347
Report Number(s):
CONF-870570-
Conference Information:
Journal Name: AIP Conf. Proc.; (United States) Journal Volume: 159:1
Country of Publication:
United States
Language:
English