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Nuclear Criticality Safety
NCSD provides communication among nuclear criticality safety professionals through the development of standards, the evolution of training methods and materials, the presentation of technical data and procedures, and the creation of specialty publications. In these ways, the division furthers the exchange of technical information on nuclear criticality safety with the ultimate goal of promoting the safe handling of fissionable materials outside reactors.
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Conference on Nuclear Training and Education: A Biennial International Forum (CONTE 2025)
February 3–6, 2025
Amelia Island, FL|Omni Amelia Island Resort
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Biden executive order to facilitate AI data center power
As demand for artificial intelligence and data centers grows, President Biden issued an executive order yesterday aimed to ensure clean-energy power supply for the technology.
Hui Zhang, E. E. Lewis
Nuclear Science and Engineering | Volume 152 | Number 1 | January 2006 | Pages 29-36
Technical Paper | doi.org/10.13182/NSE06-A2560
Articles are hosted by Taylor and Francis Online.
The variational nodal method is generalized to include R-Z geometry. Spherical harmonic trial functions in angle are combined with orthonormal polynomials in space to discretize the multigroup equations. The nodal response matrices that result correspond to volumes that are toroids, with rectangular cross sections, except along the centerline where the volumes are cylinders. The R-Z response matrix equations are implemented as modifications to the Argonne National Laboratory code VARIANT, and existing iterative methods are used to obtain numerical solutions. The method is tested in P1, P3, and P5 approximations, and results are presented for both a one-group fixed source and a two-group eigenvalue problem.