ANS is committed to advancing, fostering, and promoting the development and application of nuclear sciences and technologies to benefit society.
Explore the many uses for nuclear science and its impact on energy, the environment, healthcare, food, and more.
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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May 2025
Latest News
Argonne’s METL gears up to test more sodium fast reactor components
Argonne National Laboratory has successfully swapped out an aging cold trap in the sodium test loop called METL (Mechanisms Engineering Test Loop), the Department of Energy announced April 23. The upgrade is the first of its kind in the United States in more than 30 years, according to the DOE, and will help test components and operations for the sodium-cooled fast reactors being developed now.
J. P. Thompson, G. R. McCoy, B. T. Lubin
Nuclear Technology | Volume 48 | Number 2 | April 1980 | Pages 122-127
Technical Paper | Reactor | doi.org/10.13182/NT80-A32459
Articles are hosted by Taylor and Francis Online.
Ex-core neutron detector and core barrel-mounted accelerometer signals were used to determine the ratio of percent variation in the ex-core signal to core barrel amplitude. Based on these data, the nominal value, including uncertainties, is 1.60 ± 0.24%/mm (0.0407 ± 0.006%/mil). This result is in agreement with both predictions, based on a one-dimensional transport model, and previously reported data.
