1. Temporal and Spatial PFC Temperature Profiles in KSTAR 2010.
- Author
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Bang, E. N., Hong, S. H., Kim, K. M., Kim, H. T., Kim, H. K., Lee, K. S., Jeon, Y. M., Bak, J. G., Yang, H. L., Kim, W. C., Oh, Y. S., and Chung, K. S.
- Subjects
PLASMA gases ,SUPERCONDUCTING composites ,SUPERCONDUCTORS ,HIGH temperature plasmas ,SURFACE temperature ,THERMOCOUPLES ,H-mode plasma confinement ,GLOW discharges - Abstract
In- and outboard plasma facing components (PFCs) of Korea Superconducting Tokamak Advanced Research (KSTAR) have been fully installed in 2010 for D-shaped diverted plasmas. Before the start of plasma operation, the PFCs were baked up to 200 ^\circ\C by hot nitrogen gas circulation system to remove impurities including water. The surface temperature of the PFC tiles was monitored by 200 thermocouple sensors during the plasma operation [plasma shot or glow discharge cleaning (GDC)], and the temporal and spatial (poloidal) temperature profiles are obtained. Depending on the heat flux on each tile, the surface temperature shows time-dependent behavior. After 1-h morning He GDC, the temperature of the PFCs at the inboard side has reached to 40 ^\circ\C. After an H-mode shot, the temperature of divertor tiles around the striking points was substantially increased. The time-averaged total heat flux after a few of L- and H-modes in 2010 was estimated to be approximately 0.010 \MW/m^2. [ABSTRACT FROM PUBLISHER]
- Published
- 2012
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