Measurement of Neutral Beam Profiles on DIII-D Inner Wall Armor Tiles Using Scanning Infrared Optics.

摘要

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. 13 refs., 5 figs.