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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
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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|Monte Carlo Methods and Applications
Monday, April 28, 2025|10:00–11:40AM MDT|Lawrence B
Session Chair:
David Griesheimer (Naval Nuclear Laboratory)
Alternate Chair:
John Tramm (ANL)
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A Study of Temperature Feedback in the DARWIN Core Concept with Comparison of Monte Carlo and Deterministic Approaches
10:00–10:25AM MDT
Anze Mihelcic (Jozef Stefan Institute), Dušan Čalič (Jozef Stefan Institute), Luka Snoj (Jozef Stefan Institute)
Paper
On-the-fly Temperature Treatment Routine for Unresolved Resonance Probability Table Sampling in Serpent 2
10:25–10:50AM MDT
Jaakko Leppänen (VTT Technical Research Centre of Finland)
Convergence Analysis on Large Scale Models Simulated Using the GUARDYAN-SUBCHANFLOW Coupled Code System
10:50–11:15AM MDT
Elod Pázmán (Budapest Univ. Technology and Economics), Gabor Tolnai (Budapest Univ. Technology and Economics), David Legrady (Budapest Univ. Technology and Economics), Tamas Hajas (Budapest Univ. Technology and Economics)
Multi-Material Cell Treatments in the LLNL Imp IMC Code
11:15–11:40AM MDT
Evan S. Gonzalez (LLNL), Patrick S. Brantley (LLNL), Matthew J. O'Brien (LLNL)
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