Pre-Processing of Cross-Sections Using Dimensionality Reduction Techniques

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Reactor physics codes rely on cross-section data to determine, for example, flux profiles or burn-up calculations. This data contains cross section values for different neutron-atom interactions (e.g., absorption, fission and scattering) for a large number of isotopes as function of energy and it is tabulated for a specific set of parameters (e.g., moderator temperature, fuel temperature, moderator density). In order to perform such neutronic calculations, the amount of this data that needs to be stored is very large due to the high number of isotopes and many tabulation points are needed. This data needs to be retrieved at each time ... continued below

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Mandelli, D.; Rabiti, C. & Alfonsi, A. November 1, 2012.

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Reactor physics codes rely on cross-section data to determine, for example, flux profiles or burn-up calculations. This data contains cross section values for different neutron-atom interactions (e.g., absorption, fission and scattering) for a large number of isotopes as function of energy and it is tabulated for a specific set of parameters (e.g., moderator temperature, fuel temperature, moderator density). In order to perform such neutronic calculations, the amount of this data that needs to be stored is very large due to the high number of isotopes and many tabulation points are needed. This data needs to be retrieved at each time iteration of the code from the machine memory which negatively affects the computational time of the code itself.

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  • 2012 ANS Winter Meeting,San Diego, CA,11/11/2012,11/15/2012

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  • Report No.: INL/CON-12-26342
  • Grant Number: DE-AC07-05ID14517
  • Office of Scientific & Technical Information Report Number: 1060967
  • Archival Resource Key: ark:/67531/metadc842253

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  • November 1, 2012

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  • May 19, 2016, 9:45 a.m.

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  • June 20, 2016, 3:48 p.m.

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Mandelli, D.; Rabiti, C. & Alfonsi, A. Pre-Processing of Cross-Sections Using Dimensionality Reduction Techniques, article, November 1, 2012; Idaho Falls, Idaho. (digital.library.unt.edu/ark:/67531/metadc842253/: accessed September 26, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.