Microwave reflectometry for ICRF coupling studies on TFTR

Conference · Sat Oct 15 04:00:00 EDT 1994 · AIP Conference Proceedings (American Institute of Physics); (United States)

OSTI ID:7013941

Wilgen, J B; Hanson, G R; Bigelow, T S; Batchelor, D B; Collazo, I; Hoffman, D J; Murakami, M; Rasmussen, D A; Stallings, D C ^[1]; Raftopoulos, S; Wilson, J R ^[2]

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1. Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-8072 (United States)
2. Plasma Physics Laboratory, Princeton University, P.O. Box 451, Princeton, New Jersey 08543 (United States)

A dual-frequency differential-phase reflectometer has been developed for use in ICRF power coupling studies on TFTR. This system has been optimized for measurements of the electron density profile in the edge-gradient region, where density fluctuations are large. Initial proof-of-principle measurements demonstrate that this is an effective way to measure the electron density profile in the plasma-edge region. A new reflectometer launcher is presently being installed on the center axis of the bay-K ICRF antenna on TFTR, along with the associated waveguide transmission line. This will allow direct measurement of the edge-density profile within the high-power-density environment of the ICRF antenna where density profile modification might be expected.

• DOE Contract Number: AC05-84OR21400
• OSTI ID: 7013941
• Report Number(s): CONF-9304112--
• Conference Information: Journal Name: AIP Conference Proceedings (American Institute of Physics); (United States) Journal Volume: 289:1
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700420* -- Fusion Technology-- Plasma-Facing Components-- (1992-)
ANTENNAS
CLOSED PLASMA DEVICES
COUPLING
ELECTRICAL EQUIPMENT
ELECTROMAGNETIC RADIATION
ELECTRON DENSITY
EQUIPMENT
HEATING
HIGH-FREQUENCY HEATING
ICR HEATING
MICROWAVE RADIATION
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
PLASMA
PLASMA HEATING
RADIATIONS
REFLECTIVITY
SURFACE PROPERTIES
TFTR TOKAMAK
THERMONUCLEAR DEVICES
TOKAMAK DEVICES
WAVEGUIDES