Plasma and Fusion Research

Volume 14, 1305118 (2019)

Letters


Multi-Channel Scanning Filter Spectrometer for the Beam Emission Spectroscopy
Viktoriia OLEVSKAIA, Tatsuya KOBAYASHI1), Katsumi IDA1), Mikirou YOSHINUMA1) and Wenqing HU2)
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
(Received 7 November 2018 / Accepted 20 May 2019 / Published 19 June 2019)

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

DOI: 10.1585/pfr.14.1305118


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