Status of Cross-section Data Libraries for MCNP

Technical Report · Wed Apr 24 00:00:00 EDT 2013

DOI:https://doi.org/10.2172/1077016· OSTI ID:1077016

Brown, Forrest B. ^[1]

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

The Data Team, part of the XCP-5 group at LANL, uses the NJOY code and other codes to prepare the cross-section data files used by the Monte Carlo codes MCNP5, MCNPX, and MCNP6. They perform extensive quality assurance checking of those data files. The cross-section data files are included with the releases of MCNP that are distributed by RSICC. MCNP5 is developed and supported by the Monte Carlo Codes group (XCP-3) at LANL. MCNPX is developed and supported by the NEN-5 group at LANL. MCNP6 is a merger of MCNP5 and MCNPX, with numerous additional features, and is jointly developed and supported by the XCP-3 and NEN-5 groups. MCNP5 and MCNPX are "frozen" codes, and all new development is being carried out only in the MCNP6 code. In the past, when new types of data or improved representations were developed, the Data Team would incorporate the changes into the cross-section data files, and the Monte Carlo groups would make corresponding changes to the MCNP codes to use the new data. At present, however, only MCNP6 is updated to handle new data representations; MCNP5/X are not.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA)
• DOE Contract Number: AC52-06NA25396
• OSTI ID: 1077016
• Report Number(s): LA-UR--13-23040
• Country of Publication: United States
• Language: English

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