Computer Programs
DLC-0091 ZZ-COVFILS.
last modified: 24-JUL-1997 | catalog | categories | new | search |

DLC-0091 ZZ-COVFILS.

ZZ COVFILS, 30-Group Covariance Library from ENDF/B-5 for Sensitivity Studies

top ]
1. NAME

ZZ-COVFILS

top ]
2. COMPUTERS
To submit a request, click below on the link of the version you wish to order. Rules for end-users are available here.
Program name Package id Status Status date
ZZ-COVFILS DLC-0091/02 Tested 24-JUL-1997

Machines used:

Package ID Orig. computer Test computer
DLC-0091/02 IBM 360 series PC Pentium 100
top ]
3. DESCRIPTION

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

FORMAT: ENDB/F

 

NUMBER OF GROUPS: 30-Group Covariance Library

 

NUCLIDES: H-1, B-10, C, O-16, Cr, Fe, Ni, Cu, Pb

 

ORIGIN: ENDF/B-V

 

WEIGHTING SPECTRUM:

 

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

COVFILS is a 30-Group Covariance Library. It contains neutron cross sections, and their uncertainties and correlation in multigroup form. These data can be used, in conjunction with sensitivity information, to estimate the data-related uncertainty in calculated integral quantities such as radiation-damage or heating.

top ]
4. METHODS

COVFILS was obtained by processing evaluations  from ENDF/B-V with ERRORR module of the NJOY nuclear data processing system (LA-9303-M, Vols. 1).The group structure is the Los Alamos 30-group structure which is listed in "File 1" of each multigroup data set in the library.

top ]
6. TYPICAL RUNNING TIME
DLC-0091/02
A few seconds were required to execute the auxiliary retrieval program COVARD on a PC-DELL Optiplex GXM 5100 with base memory 640 Kbyte and extended memory of 32 MByte, equipped with a Pentium processor of 99 MHz.
top ]
8. RELATED OR AUXILIARY PROGRAMS

A short retrieval program, COVARD, and the result of a sample execution of the program are included in the package. COVARD reads the multigroup cross-section and covariance data in the condensed ENDF-like format of COVILS and transforms the data into engineering format (with zeros present explicitly and groups reordered to the conventional high-to-low order). This version of COVARD retrieves and prints the cross sections and the covariance matrix for a single "wired-in" reaction pair. The output resulting from executing COVARD, as written with no input required, is included in the code package.

top ]
9. STATUS
Package ID Status date Status
DLC-0091/02 24-JUL-1997 Tested at NEADB
top ]
10. REFERENCES
  • D.W. Muir: COVFILS-2: Neutron Data and Covariances for Sensitivity and Uncertainty Analysis, Fusion Techn. 10 (3), part 2B, 1461 (November 1986).

  • D.W. Muir: The Evaluation and Application of Redundant-Cross-Section Covariances, Los Alamos National Laboratory report LA-UR-86-3786-Rev (November 1986).

  • J.W. Davidson, D.J. Dudziak, D.W. Muir, J. Stepanek, and C.E. Higgs:  Recent Joint Developments in Cross-Section Uncertainty Analysis at    Los Alamos and EIR. Los Alamos National Laboratory report LA-UR-87-219 (January 1987).

DLC-0091/02, included references:
- D.W. Muir and R.J. LaBauve:
  COVFILS - A 30-Group Covariance Library Based on ENDF/B-V
  LA-8733-MS (March 1981).
top ]
11. HARDWARE REQUIREMENTS
DLC-0091/02
The filesize of the Covariance Library file is about 900 Kbyte.
top ]
12. PROGRAMMING LANGUAGE(S) USED
Package ID Computer language
DLC-0091/02 FORTRAN-IV
top ]
13. SOFTWARE REQUIREMENTS
DLC-0091/02
The auxiliary program COVARD was executed on a PC-DELL  equipped with a Pentium processor of 99 MHz under MS-DOS. The Lahey  system F77L/EM-32 compiler Version 5.20 and linker Version 5.10 were used.
top ]
15. NAME AND ESTABLISHMENT OF AUTHORS

D.W. Muir

Applied Nuclear Science Group

Los Alamos National Laboratory, USA

top ]
16. MATERIAL AVAILABLE
DLC-0091/02
File name File description Records
DLC0091_02.001 Information file of library ZZ-COVFILS 121
DLC0091_02.002 COVFILS Library file (ASCII) 11299
DLC0091_02.003 Source code of auxiliary program COVARD 170
DLC0091_02.004 Original IBM JCL file 17
DLC0091_02.005 Output file produced by the program COVARD 207
DLC0091_02.006 DOS file-names 5
top ]
17. CATEGORIES
  • Z. Data

Keywords: covariance matrices, cross sections, data library, fusion reactions, fusion reactors, multigroup, neutron cross sections, scattering, sensitivity analysis.