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KMID : 0364920160410030191
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Journal of Radiation Protection and Research
2016 Volume.41 No. 3 p.191 ~ p.195
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Current Status of ACE Format Libraries for MCNP at Nuclear Data Center of KAERI
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Kim Do-Heon
Gil Choong-Sup
Lee Young-Ouk
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Abstract
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Background: The current status of ACE format MCNP/MCNPX libraries by NDC of KAERI is presented with a short description of each library.
Materials and Methods: Validation calculations with recent nuclear data evaluations ENDF/BV-II. 0, ENDF/B-VII.1, JEFF-3.2, and JENDL-4.0 have been carried out by the MCNP5 code for 119 criticality benchmark problems taken from the expanded criticality validation suite supplied by LANL. The overall performances of the ACE format KN-libraries have been analyzed in comparison with the results calculated with the ENDF/B-VII.0-based ENDF70 library of LANL.
Results and Discussion: It was confirmed that the ENDF/B-VII.1-based KNE71 library showed better performances than the others by comparing the RMS errors and chi2 values for five benchmark categories as well as whole benchmark problems. ENDF/B-VII.1 and JEFF-3.2 have a tendency to yield more reliable MCNP calculation results within certain confidence intervals regarding the total uncertainties for the keffvalues.
Conclusion: It is found that the adoption of the latest evaluated nuclear data might ensure better outcomes in various research and development areas.
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KEYWORD
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MCNP/MCNPX, ACE format library, Expanded criticality validation suite, Root mean square error, chi2 value, Unresolved resonance probability table
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