Paper Profile


Preliminary Performance Evaluation of On-the-Fly Doppler Broadening Capability for Monte Carlo Simulation in MCS


Documents: Full paper available in Conference Proceedings.
 
Date: Monday October 19
Time:13:25 - 13:50
 
Session:1A3: Reactor Physics I
 
Authors: Azamat Khassenov (Ulsan National Institute of Science and Technology, Korea)
Sooyoung Choi (Ulsan National Institute of Science and Technology, Korea)
Hyunsuk Lee (Ulsan National Institute of Science and Technology, Korea)
Peng Zhang (Ulsan National Institute of Science and Technology, Korea)
Youqi Zheng (Ulsan National Institute of Science and Technology, Korea)
Deokjung Lee (Ulsan National Institute of Science and Technology, Korea)
Abstract:

This paper examines multipole representation of the cross section and its further Doppler broadening at the resolved resonance region. At the first step, a conversion is performed from nuclear data file resonance parameters to multipoles, which are corresponding poles and residues. The application of multipole representation allows generating the cross section at the target temperature, without pre-generation of 0K cross section libraries. In order to reduce the computational time for cross section generation, window energy concept was implemented and tested. On-the-fly Doppler broadening module based on multipole and windowed multipole representations were implemented into Monte Carlo code, and a pin cell problem was simulated. Simulation time and multiplication factors for different cases were compared with original Monte Carlo simulation results´╗┐

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