ICRF heating in the Tandem Mirror Experiment-Upgrade (TMX-U)

Conference · Thu Mar 01 04:00:00 EST 1984

OSTI ID:6844580

Molvik, A W; Cummins, W F; Falabella, S; Poulsen, P; Barter, J; Dimonte, G; Romesser, T; Mett, R

Central cell plasma in Tandem Mirror Experiment-Upgrade (TMX-U) are heated with 100 kW of ICRF transmitter power to ion temperatures of 1.5 keV at densities of 2 x 10/sup 12/ cm/sup -3/. We have used two Faraday-shielded antennas: the first had one 90/sup 0/ loop; and the second, in current use, has two 170/sup 0/ loops connected in an m = 1 configuration. We are also installing a slot antenna. Optimum heating for wave launching occus below the cyclotron frequency, consistent with slow wave heating. In TMX-U, we observed a power threshold, which is consistent with computed end-loss power balance. The measured loading resistance varies with density and frequency in agreement with McVey's antenna-plasma coupling code.

• Research Organization: Lawrence Livermore National Lab., CA (USA); TRW, Inc., Redondo Beach, CA (USA); California Univ., Berkeley (USA)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 6844580
• Report Number(s): UCRL-90096; CONF-840311-12; ON: DE84010555
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700101* -- Fusion Energy-- Plasma Research-- Confinement
Heating
& Production
ANTENNAS
CONFINEMENT
EFFICIENCY
ELECTRICAL EQUIPMENT
EQUIPMENT
HEATING
HIGH-FREQUENCY HEATING
ICR HEATING
ION DENSITY
ION TEMPERATURE
MAGNETIC MIRRORS
OPEN PLASMA DEVICES
PLASMA CONFINEMENT
PLASMA HEATING
TANDEM MIRRORS
THERMAL BARRIERS
THERMONUCLEAR DEVICES
TMX DEVICES