Infra-red Camera for Divertor Plate

[Objectives]
Surface temperature of the divertor tiles are measured by Infrared camera system in order to calculate heat flux density to the divertor tiles

[Detectors, Diagnostic Method]
The Infrared camera views divertor tiles by the optics which consists of a convex mirror and a concave mirror. For the experiment with W-shaped divertor, started in June 1997, the mirror optics and the P1 diagnostics port were modified to view the divertor tiles at P17 section tangentially.

The vacuum window is made of sapphire, since a detector inside the Infrared camera of this system is sensitive to 2 - 5 micron,

[Specification]
Time resolution 50 ms
Temperature range 100 degree C -1200 degree C
Spatial resolution < 1 cm