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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
http://hdl.handle.net/10655/00012729
http://hdl.handle.net/10655/0001272938bb6b45-bac4-428a-9e68-769d1974f6c7
名前 / ファイル | ライセンス | アクション |
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Nucl.Fuison_59_126003 (1.4 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2021-12-15 | |||||
タイトル | ||||||
タイトル | 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 | |||||
言語 | ||||||
言語 | jpn | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | LHD | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | imaging plate | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | high purity Germanium detector | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | MCNP | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
著者 |
KOBAYASHI, Makoto I.
× KOBAYASHI, Makoto I.× Tanaka, Tomoyo× Nishitani, Takeo× OGAWA, Kunihiro× ISOBE, Mitsutaka× MOTOJIMA, Gen× Kato, Akemi× TOSHIHASHI, Sachiko× OSAKABE, Masaki× LHD, Experiment Group |
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著者ID | ||||||
内容記述タイプ | Other | |||||
内容記述 | 0000-0003-0920-2154 | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | The global flux distributions for thermal, epithermal and fast neutrons in the torus hall of large fusion devices were experimentally evaluated for the first time in the Large Helical Device (LHD) using the activation foil method measured by the imaging plate and high-purity germanium detector. It turned out that the thermal neutrons were effectively absorbed by borated polyethylene blocks placed beneath the LHD. This should reduce the radioactivity of the floor and would be beneficial in maintaining a good environment for radiation workers. Uniform distributions of epithermal and fast neutrons were observed near the LHD. In particular, the significant decrease in fast neutron flux with increasing distance from the LHD, due to the fast energy loss of fast neutrons, was observed. The neutron flux distribution measurement, with rough energy discrimination based on the threshold energy of the neutron activation foil, allows us to estimate the spatial radiation dose rate, as well as the radioactivity in components in the torus hall. The prediction of the radioactivity in the concrete floor indicated that radioactive isotope Fe will be a dominant source of radioactivity in the concrete after the nine-year deuterium experiment campaign finishes. |
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書誌情報 |
Nuclear Fusion 巻 59, 号 12, p. 126003, 発行日 2019-09-17 |
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出版者 | ||||||
出版者 | IOP publishing | |||||
出版者 | ||||||
出版者 | International Atomic Energy Agency | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0029-5515 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA00759871 | |||||
DOI | ||||||
関連タイプ | isVersionOf | |||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1088/1741-4326/ab3d14 | |||||
権利 | ||||||
権利情報 | ‘This is the Accepted Manuscript version of an article accepted for publication in Nuclear Fusion. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at https://doi.org/10.1088/1741-4326/ab3d14.’ | |||||
情報源 | ||||||
関連名称 | Citation Makoto Kobayashi et al 2019 Nucl. Fusion 59 126003 | |||||
関連サイト | ||||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1088/1741-4326/ab3d14 | |||||
関連名称 | Publisher version | |||||
著者版フラグ | ||||||
出版タイプ | AM | |||||
出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||
NAIS | ||||||
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