High-field launch electron-cyclotron heating experiments in a bumpy torus

Journal Article · Wed Jan 01 04:00:00 EST 1986 · Phys. Fluids; (United States)

DOI:https://doi.org/10.1063/1.865943· OSTI ID:6284876

Rasmussen, D A; Batchelor, D B; Swain, D W; White, T L; Kimrey, H D; Bigelow, T S; Cobble, J A; Goldfinger, R C; Hillis, D L; Richards, R K

The midplane microwave heating system in the ELMO Bumpy Torus (EBT) (in Proceedings of the Sixth International Conference on Plasma Physics and Controlled Nuclear Fusion Research, 1976 (IAEA, Vienna, 1977), Vol. II, p. 145) was supplemented with power launched from the high-field side of the fundamental resonance by an antenna in the magnet coil throat. Up to 43 kW of polarized (extraordinary mode), 28 GHz power was successfully launched with one antenna. Measurements were made of changes in the core and hot-electron ring plasma parameters when throat-launch power was added. In sharp contrast to initial expectations, the bulk core-plasma parameters were degraded while the ring parameters, in the launch cavity, were improved. These results are consistent with a modified picture of electron-cyclotron heating (ECH) in EBT.

• Research Organization: Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 6284876
• Journal Information: Phys. Fluids; (United States), Journal Name: Phys. Fluids; (United States) Vol. 29:1; ISSN PFLDA
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700101* -- Fusion Energy-- Plasma Research-- Confinement
Heating
& Production
ANTENNAS
BUMPY TORI
CORRELATIONS
ECR HEATING
ELECTRIC COILS
ELECTRICAL EQUIPMENT
ELECTRON RINGS
ELMO BUMPY TORUS
ELMO DEVICES
EQUIPMENT
HEATING
HIGH-FREQUENCY HEATING
MAGNET COILS
MAGNETIC MIRRORS
MICROWAVE HEATING
OPEN PLASMA DEVICES
PARTICLE LOSSES
PLASMA
PLASMA DIAGNOSTICS
PLASMA HEATING
RELATIVISTIC PLASMA
THERMONUCLEAR DEVICES