Objectives
To observe intensity distribution of spectral lines and bands for study of behavior of atoms and ions in the divertor region.
Detectors, Diagnostic Method
Light collected by lenses is transmitted by optical fibers from the torus hall to a diagnostic room.
The light from the optical fibers are split into four components that pass four interference filters.
Four 512-ch image-intensified photodiode arrays observe the image of the optical fibers.
[Specification]
| ・Number of spectral | lines or bands to be observed simultaneously : 4 | |
| ・Time resolution | : 100 ms | |
| ・Spatial resolution | : 10 mm (60 ch.) | |
| ・Wavelength band | : ~ 1 nm | |
| ・Position | : P-8 upper outside port |
Reference
H. Kubo, et al., "Spectroscopic study of radiative losses in the JT-60U divertor plasma", Plasma Phys. Control. Fusion 37 (1995) 1133.