Measurement of Thermal and Epithermal Neutron Flux Distribution in the Torus Hall of LHD using Activation Method in the First Deuterium Experiment Campaign

被引：6

作者：

Tanaka, Tomoyo ^{[1
]}

Kobayashi, Makoto ^{[2
,3
]}

Yoshihashi, Sachiko ^{[1
]}

Uritani, Akira ^{[1
]}

Watanabe, Kenichi ^{[1
]}

Yamazaki, Atsushi ^{[1
]}

Nishitani, Takeo ^{[2
]}

Ogawa, Kunihiro ^{[2
,3
]}

Isobe, Mitsutaka ^{[2
,3
]}

机构：

[1] Nagoya Univ, Nagoya, Aichi 4648603, Japan

[2] Natl Inst Fus Sci, Natl Inst Nat Sci, Toki, Gifu 5095292, Japan

[3] SOKENDAI Grad Univ Adv Studies, Toki, Gifu 5095292, Japan

来源：

PLASMA AND FUSION RESEARCH | 2019年 / 14卷

关键词：

LHD; neutronics; activation foil; IP; HPGe;

D O I：

10.1585/pfr.14.3405162

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

In the Large Helical Device (LHD) of the National Institute for Fusion Science, a deuterium plasma experiment was performed in March 2017. Neutrons with an energy of 2.45 MeV are generated by d (d, n) He-3 reactions. The evaluation of this neutron flux in the torus hall, as well as within the LHD vessel, is very important for the decommissioning of the LHD in the future and the radiation shielding for workers and components around the LHD. In this study, we evaluate the spatial distribution of thermal and epithermal neutron flux on the floor level of the LHD torus hall by measuring the neutron activation of gold foils. The flux information obtained in the experiment can be used for the evaluation of radio-activation and the shielding design. (C) 2019 The Japan Society of Plasma Science and Nuclear Fusion Research

引用

页数：4

共 5 条

[1] Measurement of thermal and epithermal neutron flux distribution in the torus hall of LHD using activation method in the first deuterium experiment campaign
Tanaka T.
Kobayashi M.
Yoshihashi S.
Uritani A.
Watanabe K.
Yamazaki A.
Nishitani T.
Ogawa K.
Isobe M.
Plasma and Fusion Research, 2019, 14
[2] First measurements of thermal neutron distribution in the LHD torus hall generated by deuterium experiments
Kobayashi, Makoto
Tanaka, Tomoyo
Nishitani, Takeo
Ogawa, Kunihiro
Isobe, Mitsutaka
Kato, Akemi
Saze, Takuya
Yoshihashi, Sachiko
Osakabe, Masaki
FUSION ENGINEERING AND DESIGN, 2018, 137 : 191 - 195
[3] Measurement of neutron spectrum using activation method in deuterium plasma experiment at LHD
Tanaka, Tomoyo
Yoshihashi, Sachiko
Kobayashi, Makoto
Uritani, Akira
Watanabe, Kenichi
Yamazaki, Atsushi
Nishitani, Takeo
Ogawa, Kunihiro
Isobe, Mitsutaka
FUSION ENGINEERING AND DESIGN, 2019, 146 : 496 - 499
[4] Radiation control in LHD and radiation shielding capability of the torus hall during first campaign of deuterium experiment
Kobayashi, Makoto
Saze, Takuya
Miyake, Hitoshi
Ogawa, Kunihiro
Isobe, Mitsutaka
Tanaka, Masahiro
Akata, Naofumi
Nishimura, Kiyohiko
Hayashi, Hiroshi
Kobuchi, Takashi
Yokota, Mitsuhiro
Osuna, Masaki
Nakanishi, Hideya
Osakabe, Masaki
Takeiri, Yasuhiko
FUSION ENGINEERING AND DESIGN, 2019, 143 : 180 - 187
[5] Neutron flux distributions in the Large Helical Device torus hall evaluated by an imaging plate technique in the first campaign of the deuterium plasma experiment
Kobayashi, Makoto
Tanaka, Tomoyo
Nishitani, Takeo
Ogawa, Kunihiro
Isobe, Mitsutaka
Motojima, Gen
Kato, Akemi
Yoshihashi, Sachiko
Osakabe, Masaki
NUCLEAR FUSION, 2019, 59 (12)

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