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Neutronics Analyses for Shield Upgrading of the Compact Neutral Particle Analyzer for LHD Deuterium Plasma Experiments
http://hdl.handle.net/10655/00013269
http://hdl.handle.net/10655/00013269eb723f5d-3233-449c-b50a-e1a8a8b4823c
名前 / ファイル | ライセンス | アクション |
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11603_PFR (2.1 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2022-06-23 | |||||
タイトル | ||||||
タイトル | Neutronics Analyses for Shield Upgrading of the Compact Neutral Particle Analyzer for LHD Deuterium Plasma Experiments | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | compact neutral particle analyzer | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | shielding design | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | MCNP | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | neutron streaming | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | deuterium plasma | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | LHD | |||||
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 |
NISHITANI, Takeo
× NISHITANI, Takeo× OZAKI, Tetsuo× SAITO, Kenji× KAMIO, Shuji× OGAWA, Kunihiro× ISOBE, Mitsutaka× OSAKABE, Masaki |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | The Compact Neutral Particle Analyzer (CNPA) is an E//B type neutral particle energy analyzer using permanent magnets. CNPA is installed on the diagnostic platform and connected to the outside horizontal port. Based on the preliminary shielding design, 15 cm thick borated polyethylene shields were installed before the fast deuterium plasma campaign. However, neutron induced noises could not be ignored in plasmas with the neutron emission rate higher than ∼1 × 1014 n/s. We carried out the detailed neutronics analyses for the original neutron shield by using the MCNP6 code, which takes into account the detailed structure. The neutron streaming from the beam inlet and the penetration of the bulk shield are approximately 60% and 40% contribution to the neutron flux at the detector array, respectively. Consequently, 5 cm borated polyethylene plates are added to the bulk shield and an extension shield of borated polyethylene cylinder shield with 20 cm in diameter and 35 cm in length is added around the beam inlet, where the neutron flux is expected to be 1.9 × 106 n/cm2⋅s at the detector array for the plasma with the neutron emission rate of 1.9 × 1016 n/s. | |||||
書誌情報 |
Plasma and Fusion Research 巻 14, 号 Special Issue 2, p. 3405048, 発行日 2019-04-10 |
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書誌的事項 | ||||||
the 27th International Toki Conference (ITC27) & the 13th Asia Pacific Plasma Theory Conference (APPTC2018) | ||||||
出版者 | ||||||
出版者 | The Japan Society of Plasma Science and Nuclear Fusion Research | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 1880-6821 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA12346675 | |||||
DOI | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1585/pfr.14.3405048 | |||||
権利 | ||||||
権利情報 | (c) 2019 The Japan Society of Plasma Science and Nuclear Fusion Research | |||||
関連サイト | ||||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1585/pfr.14.3405048 | |||||
関連名称 | Publisher version | |||||
著者版フラグ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
NAIS | ||||||
11603 |