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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.
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ANS Student Conference 2025
April 3–5, 2025
Albuquerque, NM|The University of New Mexico
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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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Latest News
Norway’s Halden reactor takes first step toward decommissioning
The government of Norway has granted the transfer of the Halden research reactor from the Institute for Energy Technology (IFE) to the state agency Norwegian Nuclear Decommissioning (NND). The 25-MWt Halden boiling water reactor operated from 1958 to 2018 and was used in the research of nuclear fuel, reactor internals, plant procedures and monitoring, and human factors.
A. Santamarina, P. Leconte, D. Bernard, G. Truchet
Nuclear Science and Engineering | Volume 178 | Number 4 | December 2014 | Pages 562-581
Technical Paper | doi.org/10.13182/NSE14-50
Articles are hosted by Taylor and Francis Online.
The CERES collaborative program between the French Atomic Energy Commission (CEA) and the United Kingdom Atomic Energy Agency (UKAEA) was performed in the MINERVE and DIMPLE reactors at Cadarache and Winfrith, respectively. CERES Phase II was devoted to the validation of fission product (FP) poisoning through the reactivity worth measurements of FP samples. This paper describes the oscillation experiment at the center of the MINERVE pressurized water reactor–type test lattice. This experiment is strongly representative of the FP poisoning in light water reactor spent fuels because the separated FP isotope is introduced into real UO2 pellets where 238U/iFP resonance overlap occurs. In order to preserve the experimental results within the International Reactor Physics Experiment Evaluation international database, slight corrections to define a two-dimensional benchmark are presented. The evaluation of experimental uncertainties is detailed. Therefore, the accurate APOLLO2.8 analysis of this benchmark is described, using recent JEFF-3.1.1 and ENDF/B-VII.0 nuclear data files. JEFF-3.1.1 FP worth is particularly satisfactory, except for 153Eu, which is underestimated by 8.1% + 2.6%. The CERES integral measurement data also suggest improvements to 99Tc and 145Nd evaluations in the ENDF/B-VII.0 library.
