Measurement of neutron spectrum using activation method in deuterium plasma experiment at LHD

Tomoyo Tanaka, Sachiko Yoshihashi, Makoto Kobayashi, Akira Uritani, Kenichi Watanabe, Atsushi Yamazaki, Takeo Nishitani, Kunihiro Ogawa, Mitsutaka Isobe

研究成果: Contribution to journalArticle査読

1 被引用数 (Scopus)

抄録

In the Large Helical Device (LHD) of the National Institute for Fusion Science, the experiments using deuterium plasma were performed from March 2017. Neutrons with the energy of 2.45 MeV are generated by d (d, n) 3He reactions. The evaluation of the neutron flux in the torus hall as well as the LHD vessel is very important for designing the decommissioning of the LHD in the future, and the radiation shielding for workers and components around LHD. In this study, we performed the activation experiments using multiple activation foils to obtain a neutron spectrum in the vacuum vessel of the LHD. The reaction rate of each activation foil was generally consistent with the calculation result by MCNP6. As a result of the unfolding with SAND-II code, we experimentally obtained the neutron spectrum in the vacuum vessel of the LHD for the first time.

本文言語英語
ページ(範囲)496-499
ページ数4
ジャーナルFusion Engineering and Design
146
DOI
出版ステータス出版済み - 9 2019
外部発表はい

All Science Journal Classification (ASJC) codes

  • 原子力エネルギーおよび原子力工学
  • 材料科学(全般)
  • 土木構造工学
  • 機械工学

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