2024年度核データ研究会/Symposium on Nuclear Data 2024

Session

Current Status and Issues of the Thermal Neutron Scattering Law /熱中性子散乱則データの現状と課題

14 Nov 2024, 14:20

熊取交流センター　すまいるズ　煉瓦館

59. Importance and issues of CaH$_{2}$ TLS data for reactivity coefficient and core characteristics of MoveluX$^{\mathrm{TM}}$ /超小型炉MoveluX$^{\mathrm{TM}}$におけるCaH$_2$の温度反応度特性と炉心特性における熱中性子散乱則データの重要性と課題

Rei/礼 Kimura/木村 (Toshiba Energy Systems & Solutions Corporation/東芝エネルギーシステムズ株式会社)

14/11/2024, 14:20

To realize a decarbonized society, various organizations are developing small modular reactors and micro-reactors [1]. Toshiba Energy Systems & Solutions has been developing a MoveluX$^{\mathrm{TM}}$ reactor system with 10 MWt and 3-4 MWe power output. The MoveluX$^{\mathrm{TM}}$ core uses less than 5% LEU as the nuclear fuel. Furthermore, calcium hydride (CaH$_2$) is also used as the...

11. Differential Cross-Section Measurements for Thermal Neutron Scattering Law at J-PARC/J-PARCにおける熱中性子散乱則のための微分断面積測定

Atsushi/敦 Kimura/木村 (JAEA/日本原子力研究開発機構)

14/11/2024, 14:50

Thermal neutron scattering law (TSL) is one of the important nuclear data that affect reactor characteristics such as criticality in the core design of thermal reactors. TSL describes neutron scattering due to atomic and molecular dynamics within materials. Evaluated nuclear data files include the latest TSLs, which were derived by molecular dynamics calculations [1]. The derived TSLs are...

15. Current status and issues of evaluation of thermal neutron scattering law for nuclear reactor moderators/原子炉用減速材の熱中性子散乱則評価の現状と課題

Shinsuke/梓介 Nakayama/中山 (JAEA/日本原子力研究開発機構)

14/11/2024, 15:20

This talk will introduce and discuss the current status and issues of the evaluation of thermal scattering laws (TSL) in the development of the Japanese Evaluated Nuclear Data Library, JENDL.
　In thermal neutron reactors, the TSL of the moderator has a significant impact on core calculations. In the JENDL series, the latest version, JENDL-5, is the first to include an original evaluation of...