The effect of ICRF antenna phasing on metal impurities in TFTR

Technical Report · Sat Jul 01 04:00:00 EDT 1989

DOI:https://doi.org/10.2172/5756517· OSTI ID:5756517

Stevens, J E; Bush, C; Colestock, P L; Greene, G J; Hill, K W; Hosea, J C; Phillips, C K; Stratton, B; von Goeler, S; Wilson, J R; Gardner, W; Hoffman, D; Lysojvan, A

ICRF power levels of up to 2.8 MW were achieved during the 1988 experimental run on TFTR. Metal impurity concentrations (Ti, Cr, Fe, Ni) and Z/sub eff/ were monitored during ICRF heating by x-ray pulse height analysis and uv spectroscopy. Antenna phasing was the key variable affecting ICRF performance. No increase in metallic impurities was observed for P/sub rf//approx lt/ 2.8 MW with the antenna straps 0-/Pi/, while a measurable increase in titanium (Faraday screen material) was observed for P/sub rf/ /approx gt/ 1.0 MW with 0-0 phasing. 18 refs., 8 figs.

• Research Organization: Princeton Univ., NJ (USA). Plasma Physics Lab.
• DOE Contract Number: AC02-76CH03073
• OSTI ID: 5756517
• Report Number(s): PPPL-2640; ON: DE89014009
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700101* -- Fusion Energy-- Plasma Research-- Confinement
Heating
& Production
700201 -- Fusion Power Plant Technology-- Blanket Engineering
ANTENNAS
ELECTRIC IMPEDANCE
ELECTRICAL EQUIPMENT
ELEMENTS
EQUIPMENT
HEATING
HIGH-FREQUENCY HEATING
ICR HEATING
IMPEDANCE
IMPURITIES
METALS
PLASMA DIAGNOSTICS
PLASMA HEATING
TFTR TOKAMAK
THERMONUCLEAR REACTORS
TITANIUM
TOKAMAK TYPE REACTORS
TRANSITION ELEMENTS