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Division Spotlight
Reactor Physics
The division's objectives are to promote the advancement of knowledge and understanding of the fundamental physical phenomena characterizing nuclear reactors and other nuclear systems. The division encourages research and disseminates information through meetings and publications. Areas of technical interest include nuclear data, particle interactions and transport, reactor and nuclear systems analysis, methods, design, validation and operating experience and standards. The Wigner Award heads the awards program.
Meeting Spotlight
International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering (M&C 2025)
April 27–30, 2025
Denver, CO|The Westin Denver Downtown
Standards Program
The Standards Committee is responsible for the development and maintenance of voluntary consensus standards that address the design, analysis, and operation of components, systems, and facilities related to the application of nuclear science and technology. Find out What’s New, check out the Standards Store, or Get Involved today!
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Apr 2025
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Nuclear Science and Engineering
May 2025
Nuclear Technology
Fusion Science and Technology
Latest News
TerraPower begins U.K. regulatory approval process
Seattle-based TerraPower signaled its interest this week in building its Natrium small modular reactor in the United Kingdom, the company announced.
TerraPower sent a letter to the U.K.’s Department for Energy Security and Net Zero, formally establishing its intention to enter the U.K. generic design assessment (GDA) process. This is TerraPower’s first step in deployment of its Natrium technology—a 345-MW sodium fast reactor coupled with a molten salt energy storage unit—on the international stage.
Technical Session|Methods
Tuesday, April 23, 2024|10:15AM–12:00PM PDT|Continental Ballroom 1
Session Chair:
Tatsuya Fujita (Japan Atomic Energy Agency)
Alternate Chair:
Germina Ilas (ORNL)
Session Organizer:
Go Chiba (Hokkaido University)
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Verification of a CARIBOU-OpenMC Workflow for the Analysis of HTGR-Like Systems Using the Proposed Ontario Tech Subcritical Assembly
10:15–10:35AM PDT
Kevin Sawatzky (Ontario Tech Univ.), Kirk D. Atkinson (Ontario Tech Univ.)
Paper
Comparison of Burnup Sensitivity Between Prismatic HTGR and LWR
10:35–10:55AM PDT
Go Chiba (Hokkaido Univ.)
Nuclide Inventory Validation: Effect of Nuclear Data Libraries
10:55–11:15AM PDT
Germina Ilas (ORNL), Jesse Brown (ORNL)
Simultaneous Adjustment of Uncertain Modeling Parameters and Experimental Data Through Post-Irradiation Examination Data Analyses
11:15–11:35AM PDT
Keita Yoshikawa (Hokkaido Univ.), Go Chiba (Hokkaido Univ.), Yuya Inagaki (Hokkaido Univ.), Junshuang Fan (Hokkaido Univ.)
Extension of RMC Burnup Calculations with an Energy-Dependent Branching Ratio Treatment
11:35–11:55AM PDT
Hao Luo (Tsinghua Univ.), Jiang Shihang (Tsinghua Univ.), Huang Shanfang (Tsinghua Univ.), Wang Kan (Tsinghua Univ.)
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