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DLC-0077 ZZ-COVERV.

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

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1. NAME OR DESIGNATION OF PROGRAM:  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 OF PROGRAM OR FUNCTION


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

  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. METHOD OF SOLUTION

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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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM:
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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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7. UNUSUAL FEATURES OF THE PROGRAM:
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8. RELATED AND 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. MACHINE 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. OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED

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
     Tennessee (United States)
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16. MATERIAL AVAILABLE
DLC-0077/01
symb data lib    mag tape52 group covariance LAPFX-V data library   LBSTP
source program   mag tapeCOVERX Fortran source file                 SRCTP
test-case data   mag tapeJCL & input for COVERV sample problem      DATTP
test-case output mag tapeprinted output from COVERV sample problem  OUTTP
report                   ORNL/TM-7181 (ENDF-291) (April 1980)       REPPT
report                   ORNL/TM-7389 (Draft)                       REPPT
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17. CATEGORIES
  • B. Spectrum Calculations, Generation of Group Constants and Cell Problems
  • Z. Data.

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