Plasma and Fusion Research

Volume 16, 1202108 (2021)

Rapid Communications

Initial Measurement of Doppler-Shifted DD Neutron Energy Spectrum Using CLYC7 Scintillator in LHD
Yasuko KAWAMOTO1), Kunihiro OGAWA1,2), Mitsutaka ISOBE1,2), Siriyaporn SANGAROON3), Guoqiang ZHONG4) and Masaki OSAKABE1,2)
1)
National Institute for Fusion Science, National Institutes of Natural Sciences, 322-6 Oroshi-cho, Toki, Gifu 509-5292, Japan
2)
The Graduate University for Advanced Studies, SOKENDAI, 322-6 Oroshi-cho, Toki, Gifu 509-5292, Japan
3)
Faculty of Science, Mahasarakham University, Maha Sarakham, 44150, Thailand
4)
Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, 230031, People's Republic of China
(Received 1 November 2021 / Accepted 16 November 2021 / Published 20 December 2021)

Abstract

The compact neutron energy spectrometer (CNES), based on the Cs2LiYCl6 : Ce with a 7Li-enrichment (CLYC7) scintillator, has been developed for a neutron energy diagnostic in large helical device (LHD) plasma in the 2020 experimental campaign. The CNES, installed on a tangential sightline, is utilized to measure neutron energy spectra from tangentially-injected negative-ion-based neutral beam (N-NB) heated deuterium plasmas. In this paper, an initial result of the Doppler-shifted neutron spectrum is reported.

Keywords

neutron energy spectrometer, LHD, Doppler shift of neutron energy, deuterium plasma, CLYC7

DOI: 10.1585/pfr.16.1202108

Full Text

PDF format (709Kbytes) PDF Download

References

  • [1] Y. Fujiwara et al., Nucl. Fusion 80, 112014 (2020).
  • [2] S. Kamio et al., Nucl. Fusion 60, 112002 (2020).
  • [3] K. Ogawa et al., Nucl. Fusion 50, 084005 (2010).
  • [4] M. Osakabe et al., Fusion Sci. Technol. 72, 199 (2017).
  • [5] M. Isobe et al., Trans. Plasma Sci. 46, 2050 (2017).
  • [6] K. Ogawa et al., Nucl. Fusion 61, 096035 (2021).
  • [7] M. Baba et al., Nucl. Instrum. Methods Phys. A 376, 115 (1996).
  • [8] J. Scheffel, Nucl. Instrum. Methods Phys. Res. 224, 519 (1984).