Energy propagation and field structure of LH fast waves in the UCLA continuous current tokamak (CCT)

Conference · Tue Sep 01 04:00:00 EDT 1987 · AIP Conf. Proc.; (United States)

OSTI ID:7020495

Lai, K F; Mau, T K; Fried, B D; Taylor, R J

3D field maps of the lower hybrid fast waves have been measured in the UCLA CCT tokamak in both the current drive and test wave experiments. The waves was found to propagate at a relatively constant small angle (<20/sup 0/) to the magnetic field lines. When launched from the edge, the plasma filters the antenna spectrum allowing only the component N/sub ///sub //approx. =N/sub perpendicular/ to penetrate. The wave damping cannot be accounted for either by Landau or collisional damping. The measured N/sub perpendicular//N/sub ///sub //approx. =1 suggests mode scattering between the fast and slow modes. The low N/sub ///sub // component however can be excited when launch directly at the center of the plasma using a small dipole antenna. Substantial asymmetry of the propagated wave pattern was observed in both the up-down and in-out directions.

• Research Organization: University of California, Los Angeles, CA 90024
• OSTI ID: 7020495
• 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

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700101 -- Fusion Energy-- Plasma Research-- Confinement
Heating
&amp; Production
700108* -- Fusion Energy-- Plasma Research-- Wave Phenomena
ANTENNAS
ASYMMETRY
CLOSED PLASMA DEVICES
CURRENT-DRIVE HEATING
DAMPING
DIPOLES
ELECTRIC HEATING
ELECTRICAL EQUIPMENT
EQUIPMENT
HEATING
HIGH-FREQUENCY HEATING
JOULE HEATING
LOWER HYBRID HEATING
MAGNETIC FLUX
MULTIPOLES
PLASMA
PLASMA HEATING
RESISTANCE HEATING
SCATTERING
STEADY-STATE CONDITIONS
THERMONUCLEAR DEVICES
TOKAMAK DEVICES
UCLA
WAVE PROPAGATION