Verification of MCNP6.2 with ENDF/B-VIII.0 Nuclear Data for Nuclear Criticality Safety Applications

Technical Report · Mon Apr 15 04:00:00 EDT 2019

DOI:https://doi.org/10.2172/1507344· OSTI ID:1507344

Alwin, Jennifer Louise ^[1]; Brown, Forrest B. ^[1]; Rising, Michael Evan ^[1]

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1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

MCNP6.2 was released in 2018 and is the latest production release of MCNP^® available from RSICC. MCNP6.2 includes all of the standard features for nuclear criticality safety (NCS) calculations that have been available for the past 15 years, along with new features for sensitivity-uncertainty based methods using Whisper for NCS validation. MCNP6.2 verification using ENDF/B-VII.1 nuclear data was previously reported in. This report focuses on the initial testing and verification of MCNP6.2 using the ENDF/B-VIII.0 nuclear data that were released in 2018. The sections that follow provide guidance for NCS users on modifying existing MCNP input files to use the new ENDF/B-VIII.0 ACE nuclear data, discussion of results for several ICSBEP-based benchmark suites using MCNP6.2 with ENDF/B-VII.1 and ENDF/B-VIII.0 nuclear data.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA)
• DOE Contract Number: 89233218CNA000001
• OSTI ID: 1507344
• Report Number(s): LA-UR--19-23348
• Country of Publication: United States
• Language: English

Related Subjects

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