@inproceedings{b6a7927d1aa84be79469ccd6bb4765c4,
title = "The AMPX/SCALE multigroup cross section processing for fast reactor analysis",
abstract = "Significant reactivity biases have been observed for fast reactor designs and boiling water reactors with very high void fractions in the AMPX/SCALE multigroup (MG) cross section processing procedure. Detailed investigation to resolve this problem indicated that the bias is from poor quality of unresolved resonance self-shielded data and high energy neutron spectra. The issue was resolved by regenerating the probability tables with proper normalization, obtaining the MG unresolved resonance data based on the analytic probability table method with the narrow resonance approximation, and using very fine group structure typically used in the fast system analysis. This study focused on verifying the probability table and the AMPX/SCALE MG cross section processing procedure by performing reaction rate analysis and benchmark calculations for various fast reactor fuels. Results indicate that AMPX/SCALE MG cross section processing works correctly for the fast reactor analysis.",
keywords = "AMPX/SCALE, Cross section, Fast reactor, Unresolved probability table",
author = "Kim, {Kang Seog} and Williams, {Mark L.} and Holcomb, {Andrew M.} and Dorothea Wiarda and Jeon, {Byoung Kyu} and Yang, {Won Sik}",
note = "Publisher Copyright: {\textcopyright} 2018 International Conference on Physics of Reactors, PHYSOR 2018: Reactor Physics Paving the Way Towards More Efficient Systems. All rights reserved.; 2018 International Conference on Physics of Reactors: Reactor Physics Paving the Way Towards More Efficient Systems, PHYSOR 2018 ; Conference date: 22-04-2018 Through 26-04-2018",
year = "2018",
language = "English",
series = "International Conference on Physics of Reactors, PHYSOR 2018: Reactor Physics Paving the Way Towards More Efficient Systems",
publisher = "Sociedad Nuclear Mexicana, A.C.",
pages = "732--741",
booktitle = "International Conference on Physics of Reactors, PHYSOR 2018",
}