Guide for Using ENDF/B-VIII.0 Nuclear Data with MCNP
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
This report provides guidance for using the ENDF/B-VIII.0 nuclear data that were released in 2018 and 2020 with MCNP. Appendix A: Obtaining and installing the new ENDF/B-VIII.0 ACE nuclear data. Appendix B. Obtaining & using XSDIR files that include ENDF/B-VIII.0 data. Appendix C: ENDF/B-VIII.0-based ACE files for neutron cross-sections. A listing of the available temperatures and ZA numbers for neutron cross-sections (ACE files with suffix .nnC). Appendix D: ENDF/B-VIII.0-based ACE files for thermal scattering law (TSL) data, $$S$$(α,β). A listing of the available thermal scattering $$S$$(α,β) data (ACE files with suffix .nnT) The next section below provides guidance for modifying existing $$\textit{mcnp}$$ input files to use the ENDF/B-VIII.0 data. Detailed results from running several benchmark suites for nuclear criticality safety with both ENDF/B-VII.1 and ENDF/B-VIII.0 nuclear data are reported in. It is important to note that this report deals only with TSL data released in 2020. With the original release of ENDF/B-VIII.0 in 2018, the ACE files for neutron cross-sections were contained in a directory called Lib80X and the ACE files for TSL data were contained in a directory called ENDF80SaB. A few years later, it was determined that many of the TSL data files had been generated with faulty data or with incorrect processing, and a new set of ACE files for TSL data was created, with the corrected files contained in directory ENDF80SaB2.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA), Nuclear Criticality Safety Program (NCSP)
- DOE Contract Number:
- 89233218CNA000001
- OSTI ID:
- 1755877
- Report Number(s):
- LA-UR--20-30460
- Country of Publication:
- United States
- Language:
- English
Similar Records
Verification of the Re-Released ENDF/B VIII.0 Based Thermal Scattering Libraries
Verification of MCNP6.2 with ENDF/B-VIII.0 Nuclear Data for Nuclear Criticality Safety Applications
Data Testing of Polyethylene Thermal Scattering Law with New Thermal Epithermal eXperiments (TEX) Plutonium Baseline Benchmark, PU-MET-MIXED-002
Conference
·
Wed Nov 18 23:00:00 EST 2020
· Transactions of the American Nuclear Society
·
OSTI ID:1908506
Verification of MCNP6.2 with ENDF/B-VIII.0 Nuclear Data for Nuclear Criticality Safety Applications
Technical Report
·
Mon Apr 15 00:00:00 EDT 2019
·
OSTI ID:1507344
Data Testing of Polyethylene Thermal Scattering Law with New Thermal Epithermal eXperiments (TEX) Plutonium Baseline Benchmark, PU-MET-MIXED-002
Conference
·
Sun Nov 15 23:00:00 EST 2020
· Transactions of the American Nuclear Society
·
OSTI ID:1907841