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Power transport to the poloidal divertor experiment scoop limiter

Journal Article · · Fusion Technol.; (United States)
OSTI ID:6229781
Power transport to the Poloidal Divertor Experiment graphite scoop limiter was measured during both ohmic- and neutral-beam-heated discharges by observing its front face temperatures using an infrared camera. Measurements were made as a function of a plasma density, current, position, fueling mode, and heating power for both co- and counter-neutral beam injection. The measured thermal load on the scoop limiter was 25 to 50%. of the total plasma heating power. The measured peak front face midplane temperature was 1500/sup 0/C, corresponding to a peak surface power density of 3 kW/cm/sup 2/. This power density implies an effective parallel power flow of 54 kW/cm/sup 2/ in agreement with the radial power distribution extrapolated from television Thomson scattering and calorimetry measurements.
Research Organization:
Plasma Physics Lab., Princeton Univ., Princeton, NJ 08544
OSTI ID:
6229781
Journal Information:
Fusion Technol.; (United States), Journal Name: Fusion Technol.; (United States) Vol. 12:1; ISSN FUSTE
Country of Publication:
United States
Language:
English