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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
2025 ANS Annual Conference
June 15–18, 2025
Chicago, IL|Chicago Marriott 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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Nuclear Science and Engineering
June 2025
Nuclear Technology
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Latest News
ANS holds Educator Training webinar on nuclear waste
Loewen
Perfetti
A recent American Nuclear Society webinar tackled misconceptions about nuclear waste. Christopher Perfetti, an associate professor of nuclear engineering at the University of New Mexico, presented “The How, Why, and Where of Nuclear Waste,” the latest online event in ANS’s Educator Training series.
Moderated by ANS past president Eric Loewen (2011–12), this presentation was built to be an accessible and informative Nuclear Waste 101 offering as part of the Society’s broader effort to develop a program specifically tailored to educating K-12 teachers.
Technical Session|Computational Thermal Hydraulics
Monday, August 21, 2023|3:30–5:10PM EDT|Columbia 1
Session Chair:
Jun Liao (Westinghouse Electric Co.)
Alternate Chair:
Xu Wu (NCSU)
Session Organizer:
Igor A. Bolotnov (NCSU)
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Investigation of Water and Helium-Cooled Decay Heat Removal Systems in a Gas-Cooled Fast Reactor
3:30–3:50PM EDT
Gusztáv Mayer (Centre for Energy Research), Attila Guba (Centre for Energy Research)
Paper
LTO Modifications to Reduce the PTS Issue -- Results of TH Calculations in the Context of the APAL European Project
3:50–4:10PM EDT
Markku Puustinen (LUT Univ.), Giteshkumar Patel (LUT Univ.), Pavel Kral (Nuclear Research Institute Rez), Tomas Nikl (Nuclear Research Institute Rez), Ivor Clifford (Paul Scherrer Institute), Richard Trewin (Framatome), Jürgen Hartung (GRS), Inés Mateos Canals (GRS), Andrej Prošek (Jožef Stefan Institute), Lukasz Sokolowski (Kiwa Technical Consulting), Piotr Mazgaj (Warsaw Univ. Technology), Maksym Vyshemirskyi (SSTC NRS)
Code Validation of SAM Using Forced and Natural-Circulation Data from NACIE-UP Benchmark
4:10–4:30PM EDT
Victor Coppo Leite (Penn State), Elia Merzari (Penn State), Adam Dix (Purdue), Ling Zou (ANL)
Presentation Slides (Visible to Attendees)
Recent RELAP5-3D Developments for Water and Gas-Cooled Reactors
4:30–4:50PM EDT
George L. Mesina (INL), Robert P. Martin (BWX Technologies)
Modelling and Optimization of Free-Piston Stirling Engine Generators for Microreactor Applications Using SAGE Software
4:50–5:10PM EDT
Phat Doan (Univ. New Mexico), Minghui Chen (Univ. New Mexico)
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