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タイトル: | Accuracy of reaction rates in the accelerator-driven system with 14MeV neutrons at the Kyoto University Critical Assembly |
著者: | Pyeon, Cheol Ho https://orcid.org/0000-0003-0620-1711 (unconfirmed) Takemoto, Yuki Yagi, Takahiro Lim, Jae-Yong Takahashi, Yoshiyuki Misawa, Tsuyoshi |
著者名の別形: | 卞, 哲浩 |
キーワード: | ADS KUCA 14 MeV neutrons |
発行日: | Feb-2012 |
出版者: | Elsevier Ltd. |
誌名: | Annals of Nuclear Energy |
巻: | 40 |
号: | 1 |
開始ページ: | 229 |
終了ページ: | 236 |
抄録: | Reaction rate experiments on the accelerator-driven system (ADS) are conducted by combining a critical assembly of a solid-moderated and -reflected core with a pulsed neutron generator. Neutrons (14 MeV) generated from the accelerator are injected into a subcritical system and the reaction rates are measured by the foil activation method to obtain neutronic spectrum data. The numerical calculations are executed by MCNPX with ENDF/B-VI.8, JENDL-3.3 and JENDL/D-99 libraries to evaluate the reaction rates of activation foils set in the center of the core. For the ADS experiments with 14 MeV neutrons, the C/E values between the experiments and the calculations are found to be well within the relative difference of about 30% in all foils up to subcriticality 1.05%Δk/k. The reaction rates do not depend on the subcriticality level in cases of [115]In, [56]Fe (purity 99.99%), [27]Al, whereas subcriticality dependence is observed in [93]Nb. In the critical experiments carried out in the A, B and C cores, special mention should be made of the remarkable effect of the composition rate of [56]Fe material. Thus a remarkable improvement is observed in the accuracy of experimental and numerical reaction rates, demonstrating the importance of material impurity for subcritical experiments. |
著作権等: | © 2011 Elsevier Ltd. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。 This is not the published version. Please cite only the published version. |
URI: | http://hdl.handle.net/2433/152380 |
DOI(出版社版): | 10.1016/j.anucene.2011.10.011 |
出現コレクション: | 学術雑誌掲載論文等 |
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