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• Material Type: 文書・図像類
• Title: None
• Author/Editor: Oteru, Shigeru; 松本 光雄; Deshimau, Takehide; Tai, Ichio; Hanai, Kohi; Kameda, Akiyuki
• Author Heading: Oteru, Shigeru; 松本 光雄; Deshimau, Takehide; Tai, Ichio; Hanai, Kohi; Kameda, Akiyuki
• Publication Date: 1988-06
• Publication Date (W3CDTF): 1988-06
• Alternative Title: Long-life in-core neutron for prototype hoavy water reactor FUGEN
• Periodical title: PNC TN3410 88-015
• Text Language Code: eng
• Target Audience: 一般
• Note (General): A long-life in-core neutron detector was developed from 1973 through 1978 and since then, it has been applied to the prototype heavy water reactor "Fugen" as a local power monitor. More than 10 year's operation experience of the detector proved its performance as was expected. The detector is a fission chamber of regenerative type whose tube is made of zircaloy-2 metal for neutron economy. In-core neutron detectors for the local power monitor are placed in heavy water moderator of 50 c. The in-core conditions bring a high level thermal neutron flux environment. It tends to hurt the lineality and shorten the life time of the detectors because of rapid burnup of the neutron conversion material($^{235}$U)in thedetector compared to the light water reactors.These problems were solved by some improvements and it was demonstrated that the detector had the performance of high linearity and long-life characteristics.; None
• Source: /PNC-TN3410-88-015.pdf （fulltext）; https://jopss.jaea.go.jp/pdfdata/PNC-TN3410-88-015.pdf
• Access Restrictions: 限定公開
• Data Provider (Database): 国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）; https://irdb.nii.ac.jp
• Original Data Provider (Database): 日本原子力研究開発機構 : JOPSS:JAEA Originated Papers Searching System

• Summary, etc.: A long-life in-core neutron detector was developed from 1973 through 1978 and since then, it has been applied to the prototype heavy water reactor "Fu...