VUV Spectrometer for Main Plasma
-Impurity species monitoring for plasma operation.
-Density measurement of light impurities such as carbon, oxygen
-Study of impurity behavior.
[Detectors, Diagnostic Method]
-Flat-field grazing incidence spectrometer with a holographic
-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 is calibrated by the branching
ratio method relatively.
||0.5 nm - 40 nm
> 50 (at 5nm)
 T. Sugie et al., Kakuyugo Kenkyu 59, supplement (1988)
 H. Kubo et al., Rev. Sci. Instr. 59 (1988) 1515.
 H. Nagata et al., Nucl. Instrum & Methods A294