Windowed multipole sensitivity to target accuracy of the optimization procedure
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Foget_Windowed multipole.pdf
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463.77 KB
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Adobe PDF
Checksum (MD5)
ca180f753c66e4e3d2608b68c5e4591f
Author(s)
Josey, Colin
Forget, Benoit Robert Yves
Smith, Kord S.
Date Issued
April 2015
Journal
Journal of Nuclear Science and Technology
Publisher
Taylor & Francis
Citation
Josey, Colin, Benoit Forget, and Kord Smith. “Windowed Multipole Sensitivity to Target Accuracy of the Optimization Procedure.” Journal of Nuclear Science and Technology 52, no. 7–8 (April 23, 2015): 987–992.
Version
Author's final manuscript
Abstract
This paper compares the accuracy of the windowed multipole direct Doppler broadening method to that of the ENDF-B/VII.1 libraries that come with MCNP6. Various windowed multipole libraries were generated with different maximum allowed relative errors. Then, the libraries were compared to the MCNP6 data via resonance integral and through single assembly Monte Carlo analysis. Since the windowed multipole uses resonance parameters, resonance integrals are only affected by the number of resonances included in the library and not by the order of the background fitting function. The relative performance of each library with varying maximum allowed error was evaluated. It was found that setting a maximum target relative error of 0.1% in the library provided highly accurate data that closely matches the MCNP6 data for all temperatures of interest, while still having suitable computational performance. Additionally, a library with a maximum relative error of 1% also provided reasonable accuracy on eigenvalue and reaction rates with a noticeable improvement on performance, but with a few statistically significant differences with the MCNP6 data.
MIT Department
Massachusetts Institute of Technology. Department of Nuclear Science and Engineering
Terms of Use
Creative Commons Attribution-Noncommercial-Share Alike
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DOI of Published Version
https://doi.org/10.1080/00223131.2015.1035353
