| Item type |
itemtype_ver1(1) |
| 公開日 |
2021-09-17 |
| タイトル |
|
|
タイトル |
Proposal and applicability of estimated criticality lower-limit multiplication factor using the bootstrap method |
|
言語 |
en |
| 著者 |
Hayashi, Takuto
Endo, Tomohiro
Yamamoto, Akio
|
| 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 30/06/2021, available online: http://www.tandfonline.com/10.1080/00223131.2021.1902416. |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
subcriticality |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
estimated criticality lower-limit multiplication factor |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
bootstrap method |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
critical experiment |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
KUCA |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
uncertainty |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
criticality calculation |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
covariance |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
nuclear data |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
benchmark |
| 内容記述 |
|
|
内容記述タイプ |
Abstract |
|
内容記述 |
To judge whether an application system is a subcritical state or not based on numerical results of the effective neutron multiplication factor keff, an evaluation method of the estimated criticality lower-limit multiplication factor (ECLLMF) using the bootstrap method is newly proposed. By utilizing numerical results of keff for critical benchmark-problems that are selected depending on neutronic similarity to the application system, the ECLLMF should be carefully and conservatively estimated based on uncertainties of keff due to a criticality safety analysis code, experimental uncertainty, and covariance matrix of the nuclear data library. Furthermore, the frequency distribution of keff for these problems does not necessarily obey an ideal normal distribution. Using a resampling technique called ‘bootstrap method,’ the proposed method can reasonably estimate the ECLLMF considering the uncertainties and nuclear data-induced correlation between each critical benchmark-problem without the assumption of normality. To investigate the applicability of the proposed method, the approach-to-criticality experiment was carried out at the Kyoto University Critical Assembly (KUCA). Comparison of numerical results of keff and the ECLLMF using the bootstrap method indicated that the proposed method was able to judge an actual subcritical core as subcritical state. |
|
言語 |
en |
| 内容記述 |
|
|
内容記述タイプ |
Other |
|
内容記述 |
Published online: 30 Jun 2021 |
|
言語 |
en |
| 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resource |
http://purl.org/coar/resource_type/c_6501 |
|
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 |
| 関連情報 |
|
|
関連タイプ |
isVersionOf |
|
|
識別子タイプ |
DOI |
|
|
関連識別子 |
https://doi.org/10.1080/00223131.2021.1902416 |
| 収録物識別子 |
|
|
収録物識別子タイプ |
PISSN |
|
収録物識別子 |
0022-3131 |
| 書誌情報 |
en : Journal of Nuclear Science and Technology
巻 58,
号 9,
p. 1008-1017,
発行日 2021-06-30
|
| ファイル公開日 |
|
|
日付 |
2022-06-30 |
|
日付タイプ |
Available |
JNST58_pp1008-1017_2021.pdf (739 KB)
