INFRARED OBSERVATIONS OF THE FIRST WALL IN JET
Some aspects and results of the observations carried out at JET by means of CCD infrared cameras with a filter at 900nm have been presented. Although affected by radiation from line emission, the thermal images have allowed estimates of the energy scrape-off length (-1cm) and of the power loading on the limiters. Asymmetries of the plasma footprints on the limiters have been described and some explanations proposed. Among these the most promising seem to be the possible presence of toroidal plasma rotation at the edge. Finally, we have shown that CCD cameras can provide a good contribution to the study of edge phenomena such as Marfes. In order to overcome the problems with the surface temperature measurement a system based on a LHe cooled IR 32x32 array is under construction.
Bibliographic Reference: COURSE AND WORKSHOP ON BASIC PHYSICAL PROCESSES OF TOROIDAL FUSION PLASMAS, VARENNA (ITALY), AUG. 26-SEPT. 3, 1985 VOL. II, PP. 677-686 EUR 10418 EN (1986) FS, VOL. I AND VOL. II, 733 P., BFR 3600 FOR BOTH VOLUMES, EUROFFICE, LUXEMBOURG, POB 1003
Record Number: 1989125080200 / Last updated on: 1987-12-01
Available languages: en