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Conference Spotlight
2025 ANS Winter Conference & Expo
November 9–12, 2025
Washington, DC|Washington Hilton
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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Oct 2025
Jul 2025
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Nuclear Science and Engineering
November 2025
Nuclear Technology
October 2025
Fusion Science and Technology
Latest News
Russia withdraws from 25-year-old weapons-grade plutonium agreement
Russia’s lower house of Parliament, the State Duma, approved a measure to withdraw from a 25-year-old agreement with the United States to cut back on the leftover plutonium from Cold War–era nuclear weapons.
Technical Session
Tuesday, September 16, 2025|8:00–9:40AM CDT|Grand Salon DE
Session Chair:
Rowdy Davis
Session Organizer:
Alternate Chair:
Jesson D. Hutchinson
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From Quarter Inch to Infinite Reflection: Designing Ta-Reflected Pu Systems
8:00–8:20AM CDT
Peter Brain (LANL), Riley Bulso (LANL), Theresa Cutler (LANL), Jesson Hutchinson (LANL), Noah Kleedtke (LANL), Isaac Michaud (LANL), Nick Wynne (LANL)
Paper
Nuclear Data Sensitivity, Uncertainties, and Sensitivity Metrics for Tantalum Reflected Systems
8:20–8:40AM CDT
J. Hutchinson (LANL), P. Brain (LANL), M. Catlett (LANL), T. Cutler (LANL), N. Gibson (LANL), M. Herman (Brookhaven), N. Kleedtke (LANL), R. Little (LANL), I. Michaud (LANL), D. Neudecker (LANL), N. Wynne (LANL)
Comparison of Approach-to-Critical Methods for Systems with Changing Starter Neutron Rates
8:40–9:00AM CDT
Jesson Hutchinson (LANL), Natalie Cannon (Georgia Tech), Daniela Henzlova (LANL), Cole Kostelac (LANL), George McKenzie (LANL), Jawad Moussa (LANL), Mark Nelson (LANL), Robert Weldon (LANL), Nicholas Whitman (LANL)
PFUNS: Critical Experiment with Bare Highly Enriched Uranium Shells Benchmark
9:00–9:20AM CDT
Rene Sanchez (LANL), Alexander McSpaden (LANL)
The PARADIGM Experiment: An Experiment to Maximally Reduce Uncertainty in Pu-239 Intermediate Energy Nuclear Data
9:20–9:40AM CDT
Theresa Cutler (LANL), Kelsey Amundson (LANL), Peter Brain (LANL), Matt Devlin (LANL), Jesson Hutchinson (LANL), Noah Kleedtke (LANL), Annamaria McHugh (LANL), Denise Neudecker (LANL), Eric Williamson (LANL)
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