Abstract
This paper discusses recent progress in the SCALE KENO Monte Carlo code to generate problem-dependent, Doppler-broadened cross sections. The approach investigated in this study uses a finite-difference method to calculate the temperature-dependent cross sections for the 1D data, and a simple linear-logarithmic interpolation in the square root of temperature for the probability tables. With the current approach, the temperature-dependent cross sections are Doppler broadened before transport starts, and the impact on cross section loading is negligible for all but a few isotopes. Results are compared with those obtained by using multigroup libraries. Current results compare favorably with these expected results.
Original language | English |
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State | Published - 2014 |
Event | 2014 International Conference on Physics of Reactors, PHYSOR 2014 - Kyoto, Japan Duration: Sep 28 2014 → Oct 3 2014 |
Conference
Conference | 2014 International Conference on Physics of Reactors, PHYSOR 2014 |
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Country/Territory | Japan |
City | Kyoto |
Period | 09/28/14 → 10/3/14 |
Funding
This work was supported by the DOE Nuclear Criticality Safety Program, funded and managed by the National Nuclear Security Administration for the Department of Energy.
Keywords
- Monte carlo
- On-the-fly doppler broadening
- Scale