RADCOP: Manipulation and visualization of SAMMY covariances

Conference · Sat Jul 01 04:00:00 EDT 2006

OSTI ID:22039693

Sayer, R O; Wiarda, D ^[1]

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1. Oak Ridge National Laboratory, Nuclear Science and Technology Div., Bldg. 5700, P.O. Box 2008, Oak Ridge, TN 37831-6170 (United States)

Resonance parameter representations of nuclear data are used by processor codes to compute quantities needed for criticality safety and other nuclear applications. Usually these calculations also require the associated parameter covariance matrices (PCMs) that contain both the variances of resonance parameters and the correlations between parameters. The SAMMY code is widely used to fit neutron cross section data to obtain both resonance parameter representations and the corresponding PCMs, which are output to binary files. We have written a code, RADCOP, that facilitates the manipulation and visualization of information from SAMMY PCMs. RADCOP produces both one- and two-dimensional correlation plots that permit one to quickly trace the important off-diagonal correlations. ENDF File 2 and File 32 files for the Reich-Moore representation may be output. (authors)

• Research Organization: American Nuclear Society, 555 North Kensington Avenue, La Grange Park, IL 60526 (United States)
• OSTI ID: 22039693
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
CRITICALITY
CROSS SECTIONS
DATA COVARIANCES
NEUTRON REACTIONS
NUCLEAR DATA COLLECTIONS
OPERATING LICENSES
RESONANCE
TWO-DIMENSIONAL CALCULATIONS