VUV Spectrometer for Divertor Plasma
-Impurity species monitoring for plasma operation.
-Radiation power measurement of light impurities such as carbon,
oxygen and boron in the divertor region.
-Study of impurity generation and behavior in the divertor region.
[Detectors, Diagnostic Method]
-Flat-field grazing incidence spectrometer with a holographic
-Normal incidence spectrometer.
-Spectral lines are detected by a multi-channel detector composed
of a micro channel plate (MCP), a fiber plate and a 1024 ch array
-The sensitivity of this spectrometer had been calibrated by a
standard light source.
|-Wavelength range & Wavelength resolution
||2.5 nm - 130 nm (Grazing incidence spectrometer)
/> 400 (at 100nm)
97 nm - 155 nm (Normal incidence spectrometer)
/~1000 (at 150nm)
 H. Kubo et al., Nuclear Fusion 33 (1993) 1427.