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先進プラズマ研究開発

VUV Spectrometer for Divertor Plasma

掲載日:2018年12月26日更新
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[Objectives]

- 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 grating
- 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 sensor.
- The sensitivity of this spectrometer had been calibrated by a standard light source.

[Specifications]

-Wavelength range & Wavelength resolution : 2.5 nm - 130 nm (Grazing incidence spectrometer)
λ/Δλ > 400 (at 100nm)
97 nm - 155 nm (Normal incidence spectrometer)
λ/Δλ~1000 (at 150nm)
-Time resolution : 20 ms

Fig

Reference

[1] H. Kubo et al., Nuclear Fusion 33 (1993) 1427.

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