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Experimental validation of unique combination numbers for third- and fourth-order neutron correlation factors of zero-power reactor noise
http://hdl.handle.net/2237/00029682
http://hdl.handle.net/2237/00029682d0c9a14a-444f-431a-933e-aa136a73b38a
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
JNST56(4)_pp322-336_2019_rev1 (1.7 MB)
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2019-03-29 | |||||
| タイトル | ||||||
| タイトル | Experimental validation of unique combination numbers for third- and fourth-order neutron correlation factors of zero-power reactor noise | |||||
| 言語 | en | |||||
| 著者 |
Endo, Tomohiro
× Endo, Tomohiro× Yamamoto, Akio× Yamanaka, Masao× Pyeon, Cheol Ho |
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| アクセス権 | ||||||
| アクセス権 | open access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||
| 権利 | ||||||
| 言語 | en | |||||
| 権利情報 | This is an Accepted Manuscript of an article published by Taylor & Francis Group in Journal of Nuclear Science and Technology on 04/03/2019, available online: http://www.tandfonline.com/10.1080/00223131.2019.1580625. | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | Reactor noise | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | Feynman-α method | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | higher-order neutron correlation | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | subcriticality | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | double factorial | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | bootstrap method | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | statistical error | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | covariance | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | KUCA | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | measurement | |||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Zero-power reactor noise is useful for subcriticality measurements. Based on the nuclear reactor physics and the theory of neutron detection, this paper theoretically clarifies that the third- and fourth-order neutron correlation factors Y3 and Y4 can be expressed as functions of the second-order neutron correlation factor Y. In particular, if the neutron-counting gate width is sufficiently large, the saturation values Y3/Y^2 and Y4/Y^3 are almost equal to the unique combination numbers, ‘3’ and ‘15,’ for a source-driven subcritical system, where the subcriticality is less than 10,000 pcm. These unique combination numbers, ‘3’ and ‘15,’ for Y3/Y^2 and Y4/Y^3 were validated using actual zero-power reactor noise measurements carried out at the Kyoto University Criticality Assembly. In this study, the estimation of statistical errors and correlations between different gate widths owing to the bunching method was achieved by the moving block bootstrap method. For a sufficiently long measured reactor noise in a steady and unperturbed state, a statistical test for the evaluation of the critical state and the absolute measurement of subcriticality can be carried out by statistically quantifying the difference between the measurement value of Y3/Y^2 and the unique combination number. | |||||
| 言語 | en | |||||
| 内容記述 | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | ファイル公開：2020/03/04 | |||||
| 言語 | ja | |||||
| 出版者 | ||||||
| 出版者 | Taylor & Francis | |||||
| 言語 | en | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 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 | |||||
| 出版タイプ | ||||||
| 出版タイプ | AM | |||||
| 出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||
| DOI | ||||||
| 関連タイプ | isVersionOf | |||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | https://doi.org/10.1080/00223131.2019.1580625 | |||||
| ISSN（print） | ||||||
| 収録物識別子タイプ | PISSN | |||||
| 収録物識別子 | 0022-3131 | |||||
| ISSN（Online） | ||||||
| 収録物識別子タイプ | EISSN | |||||
| 収録物識別子 | 1881-1248 | |||||
| 書誌情報 |
en : Journal of Nuclear Science and Technology 巻 56, 号 4, p. 322-336, 発行日 2019-03-04 |
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| 著者版フラグ | ||||||
| 値 | author | |||||
