60-ch Fiber Optics for Divertor
[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]
| 薇umber 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.