Title :
Measurement of neutral beam profiles on DIII-D inner wall armor tiles using scanning infrared optics
Author :
Lee, R. ; Colleraine, A.P. ; Hong, R. ; Kim, J. ; Phillips, J. ; Wight, J.
Author_Institution :
Gen. Atom., San Diego, CA, USA
Abstract :
Characteristic thermal footprints made by energetic neutral beams on the inner-wall graphite tiles of the DIII-D tokamak have been examined using infrared scanning optical detectors. Horizontal and vertical neutral-beam widths are measured from the IR scanner images, and the corresponding divergence angles are estimated and compared to those obtained from calorimetry techniques. Neutral-beam injected power is estimated using a one-dimensional heat flow model and temperature data from an IR scanner
Keywords :
calorimetry; fusion reactor ignition; fusion reactor instrumentation; fusion reactor operation; fusion reactor theory and design; plasma diagnostics; C; DIII-D inner wall armor tiles; DIII-D tokamak; IR scanner images; calorimetry techniques; divergence angles; infrared scanning optical detectors; injected power; inner-wall graphite tiles; neutral beam profiles; neutral-beam widths; one-dimensional heat flow model; scanning infrared optics; temperature data; thermal footprints; Atom optics; Infrared detectors; Lenses; Mirrors; Monitoring; Optical devices; Particle beam injection; Plasma measurements; Tiles; Tokamaks;
Conference_Titel :
Fusion Engineering, 1989. Proceedings., IEEE Thirteenth Symposium on
Conference_Location :
Knoxville, TN
DOI :
10.1109/FUSION.1989.102195
