Plasma and Fusion Research
Volume 14, 1305118 (2019)
Letters
- Max Plank Institute for Plasma Physics, Garching 85748, Germany
- Physik-Department E28, Technical University Munich, Garching 85748, Germany
- 1)
- National Institute for Fusion Science, Toki, Gifu 509-5292, Japan
- 2)
- Iwate University, Faculty of Science and Engineering, Morioka, Iwate 020-8551, Japan
Abstract
Multi-channel scanning filter spectrometer with narrow band pass of 2 nm is installed in Large Helical Device (LHD) for Beam Emission Spectroscopy (BES) using hydrogen (H) and deuterium beam (D). The spectral shape of transmitted light (half width at half maximum, skewness and kurtosis) is measured using the monitor grating spectrometer coupled with the filter spectrometer. No distortion of the spectrum shape is observed in the wavelength scan range of 8 nm required for the Doppler shift of the BES emission from H-beam and D-beam.
Keywords
BES, multi-channel filter spectrometer, LHD
Full Text
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