Comparison of Integral Parameter Estimated Uncertainties in Fast Neutron Systems with COMMARA-2.1 and COMMARA-2.0 Covariance Data

Journal Article · Thu Jan 01 00:00:00 EST 2015 · Nuclear Data Sheets

DOI:https://doi.org/10.1016/j.nds.2014.12.013· OSTI ID:1177607

Palmiotti, Giuseppe ^[1]; Salvatores, Massimo ^[1]

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1. Idaho National Lab. (INL), Idaho Falls, ID (United States)

This paper shows the main differences between the COMMARA-2.0 and COMMARA-2.1 evaluated covariance data in the uncertainty estimation of integral parameters of interest for a large number of typical innovative fast neutron systems. The study provides some guidelines to the nuclear data evaluators on which materials and which reaction types need to be evaluated most accurately to achieve reliable results in computational analyses of similar systems. The assessment of the quality and reliability of the covariance data is outside the scope of the study.

• Research Organization: Idaho National Lab. (INL), Idaho Falls, ID (United States)
• Sponsoring Organization: USDOE Office of Nuclear Energy (NE)
• DOE Contract Number: AC07-05ID14517
• OSTI ID: 1177607
• Report Number(s): INL/JOU-14-32044; TRN: US1500048
• Journal Information: Nuclear Data Sheets, Vol. 123; Conference: International Workshop on Nuclear Data Covariances, Santa Fe, NM (United States), 28 Apr - 1 May 2014; ISSN 0090-3752
• Publisher: Elsevier
• Country of Publication: United States
• Language: English

Related Subjects

97 MATHEMATICS AND COMPUTING
FAST REACTORS
COMPARATIVE EVALUATIONS
Multiplication Factors
Peaks
Reactivity Worths
Cross-Section Library
Data Covariances
COMMARA-2.0
COMMARA-2.1
COVARIANCE
UNCERTAINTY CALCULATIONS