Coupling of an ICRF compact loop antenna to H-mode plasmas in DIII-D
Conference
·
· AIP Conf. Proc.; (United States)
OSTI ID:6889338
Low power coupling tests have been carried out with a prototype ICRF compact loop antenna on the DIII-D tokamak. During neutral-beam-heated L-mode discharges the antenna loading is typically Rapprox. =1-2..cap omega.. for an rf frequency of 32 MHz (B/sub T/ = 21 kG, ..omega.. = 2..cap omega../sub D/(0)). When a transition into the H-mode regime of improved confinement occurs, the loading drops to Rapprox. =0.5-1.0..cap omega... During ELMs, transient increases in loading up to several Ohms are observed. The apparent sensitivity of ICRF antenna coupling to changes in the edge plasma profiles associated with the H-mode regime could have important implications for the design of future high power systems.
- Research Organization:
- G.A. Technologies, Inc., San Diego, CA 92138
- OSTI ID:
- 6889338
- 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
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· AIP Conference Proceedings
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Related Subjects
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700101 -- Fusion Energy-- Plasma Research-- Confinement
Heating
& Production
700108* -- Fusion Energy-- Plasma Research-- Wave Phenomena
ANTENNAS
BEAM INJECTION
CLOSED PLASMA DEVICES
COUPLING
DESIGN
ELECTRIC DISCHARGES
ELECTRICAL EQUIPMENT
EQUIPMENT
HEATING
HIGH-FREQUENCY HEATING
ICR HEATING
NEUTRAL ATOM BEAM INJECTION
PLASMA
PLASMA HEATING
THERMONUCLEAR DEVICES
TOKAMAK DEVICES
700101 -- Fusion Energy-- Plasma Research-- Confinement
Heating
& Production
700108* -- Fusion Energy-- Plasma Research-- Wave Phenomena
ANTENNAS
BEAM INJECTION
CLOSED PLASMA DEVICES
COUPLING
DESIGN
ELECTRIC DISCHARGES
ELECTRICAL EQUIPMENT
EQUIPMENT
HEATING
HIGH-FREQUENCY HEATING
ICR HEATING
NEUTRAL ATOM BEAM INJECTION
PLASMA
PLASMA HEATING
THERMONUCLEAR DEVICES
TOKAMAK DEVICES