Plasma and Fusion Research

Volume 14, 3402126 (2019)

Regular Articles


Evaluation of Neutron Emission Rate with FIT3D-DD Code in Large Helical Device
Ryosuke SEKI1,2), Kunihiro OGAWA1,2), Mitsutaka ISOBE1,2), Masayuki YOKOYAMA1,2), Sadayoshi MURAKAMI3), Hideo NUGA1), Shuji KAMIO1), Yutaka FUJIWARA1), Masaki OSAKABE1,2) and LHD Experiment Group1)
1)
National Institute for Fusion Science, National Institutes of Natural Sciences, Toki 509-5292, Japan
2)
SOKENDAI (The Graduate University for Advanced Studies), Toki 509-5292, Japan
(Received 10 January 2019 / Accepted 25 April 2019 / Published 24 July 2019)

Abstract

We compared the experimentally measured neutron emission rate with the emission rate calculated by using the simple Fokker-Planck equation with the experimental temperature and density profiles, and the deuteron density evaluated by a spectroscopy in peripheral region in LHD. The neutron emission rates evaluated by the FIT3D-DD code are approximately two times higher than experimental results in the typical magnetic configuration of LHD. In the case of low fast-ion confinement, the calculations are approximately four times higher than experimental measurements.


Keywords

neutron emission rate, simple and fast Fokker-Planck analyses, FIT3D-DD, LHD

DOI: 10.1585/pfr.14.3402126


References

  • [1] M. Osakabe et al., Fusion Sci. Technol. 72, 199 (2017).
  • [2] Y. Takeiri, IEEE Trans. Plasma Sci. 46, 1141 (2018).
  • [3] M. Osakabe et al., IEEE Trans. Plasma Sci. 46, 2328 (2018).
  • [4] Y. Takeiri, IEEE Trans. Plasma Sci. 46, 1141 (2018).
  • [5] M. Isobe et al., Rev. Sci. Instrum. 85, 11E114 (2014).
  • [6] M. Isobe et al., IEEE Trans. Plasma Sci. 46, 2050 (2018).
  • [7] M. Yokoyama et al., Nucl. Fusion 57, 126016 (2017).
  • [8] S. Murakami et al., Trans. Fusion Technol. 27, 256 (1995).
  • [9] S. Suzuki et al., Plasma Phys. Control Fusion 40, 2097 (1998).
  • [10] P. Vincenzi et al., Plasma Phys. Control Fusion 58, 124008 (2016).
  • [11] J.D. Huba, NRL Plasma Formulary (Naval Research Laboratory 2001) p.44.
  • [12] S. Murakami et al., Fusion Sci. Technol. 46, 241 (2004).
  • [13] R. Seki et al., Plasma Fusion Res. 3, 016 (2008).