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Division members promote the advancement of mathematical and computational methods for solving problems arising in all disciplines encompassed by the Society. They place particular emphasis on numerical techniques for efficient computer applications to aid in the dissemination, integration, and proper use of computer codes, including preparation of computational benchmark and development of standards for computing practices, and to encourage the development on new computer codes and broaden their use.
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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
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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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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. D. Spencer, T. G. Williamson
Nuclear Science and Engineering | Volume 27 | Number 3 | March 1967 | Pages 568-572
Technical Paper | doi.org/10.13182/NSE86-A17623
Articles are hosted by Taylor and Francis Online.
The age of fission neutrons was measured to the indium resonance energy for light water and three metal-to-water volume ratios (1/4, 1/2, 2/3) in aluminum- water mixtures. A large plane highly enriched 235U fission plate provided the source of neutrons. Aluminum plates (0.127 × 122 × 122 cm) oriented parallel to the source plane were used for the metal. Indium foil activities were taken in planes parallel to the source and integrated over these planes to obtain the equivalent activities that would result from an infinite source. From these data, the ages for the four cases were: M/W = 0, (26.24 ± 0.33 cm2); M/W = 1/4, (32.28 ± 0.50 cm2); M/W = 1/2, (39.96 ± 0.50 cm2); M/W = 2/3, (44.88 ± 0.59 cm2). To investigate heterogeneous effects, the plates were lumped to simulate 0.635-cm-thick plates and the measurements repeated for the 2/3 metal-to-water ratio. The measured age was 44.50 ± 0.49 cm2, indicating no lumping effect in this measurement. The data for the pure water measurement were also analyzed by applying geometric corrections for the finite size of the source plate. This resulted in a measured age of 27.82 ± 0.66 cm2, which agrees with previous measurements utilizing this method of data analysis.