Computer Programs
DLC-0077 ZZ-COVERV.
last modified: 25-NOV-2002 | catalog | categories | new | search |

DLC-0077 ZZ-COVERV.

ZZ COVERV, Multigroup Cross-Section Covariance Matrices in COVERX Format

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1. NAME

ZZ-COVERV.

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2. COMPUTERS
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Program name Package id Status Status date
ZZ-COVERV DLC-0077/01 Tested 25-NOV-2002

Machines used:

Package ID Orig. computer Test computer
DLC-0077/01 IBM 360 series PC Pentium 200,RISC 6000,ALPHA/AXP
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3. DESCRIPTION

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

FORMAT: CONVERX Format

 

NUMBER OF GROUPS: 52 group energy structure

 

NUCLIDES: Ni, Cr, O-16, C-12, Fe, Na, U-235, U-238, Pu-239, Pu-240  Pu-241, B-10

 

ORIGIN: ENDF/B-V

 

WEIGHTING SPECTRUM: VITAMIN-E weighting function

  • from 10-5 eV to 0.44 eV      -> Maxwellian

  • from 0.414 eV to 2.12 MeV    -> 1/E

  • from 2.12 MeV to 10 Mev      -> fission spectrum

  • from 10 MeV to 12.52 MeV     -> 1/E

  • from 12.52 MeV to 15.68 MeV  -> Velocity Exponential Fusion Peak

  • from 15.68 MeV to 19.64 MeV  -> 1/E

 

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

Compilation of Multigroup Cross-section Covariance Matrices in COVERX Format for Several Important Materials (Generated from ENDF/B-V Data Using PSR-093/PUFF2).

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4. METHODS

The Coverx Service Module includes seven execution paths to aid in understanding and using multigroup cross-section covariance matrices contained in the standard interface file COVERX.
When the generation of a COVERX file(s) is (are) complete for a study, a careful review is recommended before it is used. The COVERX service module is available to aid in this review. If identification problems or errors are detected, they can often be quickly corrected by the COVERX service module. At present, the module has seven execution paths which perform the following tasks: 1) Lists the contents of a COVERX file. 2) Allows additional multigroup cross- section covariance matrices from an existing COVERX file. 3) Allows deletions of multigroup cross-section covariance matrices from an existing COVERX file. 4) Merges two COVERX files and creates a new file. 5) Changes the mode of a file from unformatted to formatted and conversely. 6) Allows modification of the records contained in the COVERX file. 7) Selectively edits or copies a file.

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6. TYPICAL RUNNING TIME

The test case of the data management code ran at the NEA Data Bank on a PC/200MHz in 23 seconds.

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8. RELATED OR AUXILIARY PROGRAMS

COVERX : A Service Module for Standard Interface File for Multigroup Cross-Section Covariance Matrices.

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9. STATUS
Package ID Status date Status
DLC-0077/01 25-NOV-2002 Tested at NEADB
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10. REFERENCES
DLC-0077/01, included references:
- J.D. Drischler:
  The COVERX Service Module of the FORSS System
  ORNL/TM-7181 (ENDF-291) (April 1980).
- J.D. Smith and B.L. Broadhead:
  Multigroup Covariance Matrices for Fast Reactor Studies
  ORNL/TM-7389 (Draft).
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11. HARDWARE REQUIREMENTS

The data management code has been extensively tested at the NEA Data Bank on a PC/200MHz, an IBM RISC/6000 workstation and DEC Alpha.

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12. PROGRAMMING LANGUAGE(S) USED
Package ID Computer language
DLC-0077/01 FORTRAN-77
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13. SOFTWARE REQUIREMENTS

The data management code has been installed at the NEA Data Bank under MS-DOS (Windows 95) with the LahEy f77 5.2 compiler, under AIX 3.2 with the xlf compiler, and OSF/1 with the f77 compiler.

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14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS

The data management code does not run with Fortran 90.

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15. NAME AND ESTABLISHMENT OF AUTHORS

     Oak Ridge National Laboratory, Oak Ridge, TN, USA

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16. MATERIAL AVAILABLE
DLC-0077/01
52 group covariance LAPFX-V data library
COVERX Fortran source file
JCL & input for COVERV sample problem
printed output from COVERV sample problem
electronic documentation
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17. CATEGORIES
  • Z. Data

Keywords: ENDF/B, covariance matrices, data library, data uncertainties, multigroup.