Item type |
itemtype_ver1(1) |
公開日 |
2022-09-26 |
タイトル |
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タイトル |
Application of dynamic mode decomposition to Rossi-α method in a critical state using file-by-file moving block bootstrap method |
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言語 |
en |
著者 |
Endo, Tomohiro
Nishioka, Fuga
Yamamoto, Akio
Watanabe, Kenichi
Pyeon, Cheol Ho
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アクセス権 |
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アクセス権 |
open access |
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アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
権利 |
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言語 |
en |
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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 27/02/2022, available online: http://www.tandfonline.com/10.1080/00223131.2022.2030260. |
キーワード |
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主題Scheme |
Other |
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主題 |
Prompt neutron decay constant |
キーワード |
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主題Scheme |
Other |
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主題 |
Rossi-α method |
キーワード |
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主題Scheme |
Other |
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主題 |
critical experiment |
キーワード |
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主題Scheme |
Other |
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主題 |
dynamic mode decomposition |
キーワード |
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主題Scheme |
Other |
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主題 |
bootstrap method |
キーワード |
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主題Scheme |
Other |
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主題 |
KUCA |
キーワード |
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主題Scheme |
Other |
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主題 |
validation |
キーワード |
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主題Scheme |
Other |
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主題 |
JENDL |
キーワード |
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主題Scheme |
Other |
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主題 |
FRENDY |
キーワード |
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主題Scheme |
Other |
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主題 |
MCNP |
内容記述 |
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内容記述 |
Prompt neutron decay constant α in a critical state is useful information to validate the numerically predicted ratio of the point kinetics parameters βeff/ℓ, where βeff and ℓ are the effective delayed neutron fraction and prompt neutron lifetime, respectively. To directly measure α in a target critical system, this study proposes the application of the dynamic mode decomposition (DMD) to the reactor noise analysis based on the Rossi-α method. The DMD-based Rossi-α method enables us to robustly estimate the fundamental mode component of α from the Rossi-α histograms measured using multiple neutron detectors. Furthermore, the file-by-file moving block bootstrap method is newly proposed for the statistical uncertainty quantification of α to prevent huge memory usage when the neutron count rate is high and/or the total measurement time is long. A critical experiment has been conducted at Kyoto University Critical Assembly to demonstrate the proposed method. As a result, the proposed method can uniquely determine the α value of which the statistical uncertainty is smallest. By utilizing this experimental result of α, numerical results of βeff/ℓ ratio using the continuous energy Monte Carlo code MCNP6.2 with recent nuclear data libraries, which are processed by the nuclear data processing code FRENDY, are validated. |
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言語 |
en |
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内容記述タイプ |
Abstract |
内容記述 |
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内容記述 |
Published online: 27 Feb 2022 |
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言語 |
en |
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内容記述タイプ |
Other |
出版者 |
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言語 |
en |
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出版者 |
Taylor & Francis |
言語 |
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言語 |
eng |
資源タイプ |
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資源タイプresource |
http://purl.org/coar/resource_type/c_6501 |
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タイプ |
journal article |
出版タイプ |
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出版タイプ |
AM |
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出版タイプResource |
http://purl.org/coar/version/c_ab4af688f83e57aa |
関連情報 |
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関連タイプ |
isVersionOf |
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識別子タイプ |
DOI |
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関連識別子 |
https://doi.org/10.1080/00223131.2022.2030260 |
収録物識別子 |
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収録物識別子タイプ |
PISSN |
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収録物識別子 |
0022-3131 |
書誌情報 |
en : Journal of Nuclear Science and Technology
巻 59,
号 9,
p. 1117-1126,
発行日 2022-02-27
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ファイル公開日 |
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日付 |
2023-02-27 |
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日付タイプ |
Available |