DLC-0138: ZZ COVFILS-2-I, 74-Group Neutron Cross-Section, Scattering Matrices, Covariances for Fusion Reactors

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DLC-0138 ZZ-COVFILS-2-I. (Abstract last modified 07-JUL-1989)

ZZ COVFILS-2-I, 74-Group Neutron Cross-Section, Scattering Matrices, Covariances for Fusion Reactors

Abstract Table of Contents:

OPERATING SYSTEM

OTHER RESTRICTIONS

1. NAME OR DESIGNATION OF PROGRAM - ZZ-COVFILS-2-I.

2. COMPUTER FOR WHICH PROGRAM IS DESIGNED AND OTHER MACHINE VERSION PACKAGES AVAILABLE -

To request or retrieve programs click on the one of the active versions below. A password and special authorization is required.

Explanation of the status codes.

Program-name Package-ID Status ZZ-COVFILS-2-I DLC-0138/01 Tested

Machines used: Package-ID Orig.Computer Test Computer DLC-0138/01 Many Computers Many Computers

3. DESCRIPTION OF PROGRAM OR FUNCTION -
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  FORMAT: ENDF/B order
  NUMBER OF GROUPS: 74-group library
  NUCLIDES: H, Li-6, Be, C.
ORIGIN: ENDF/B-V (It is a subset of the Los Alamos 187-group structure used in MATXS8).
  WEIGHTING SPECTRUM: Fusion peak at high temperatures
                      Fission spectrum near 1 MeV
1/E slowing-down spectrum in the eV-keV region Room-temperature Maxwellian below 0.15 eV
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
COVFILS-2-I is a library of multigroup neutron cross sections, scattering matrices and covariances. This 74-group library is primarily intended for use in the sensitivity and uncertainty analysis of fusion integral experiments and fusion reactor systems.

4. METHOD OF SOLUTION - COVFILS-2-I is largely based on data evaluation from the ENDF/B-V library, although some minor corrections and improvements were incorporated. In cases where the covariance evaluation is missing (as in the case of Be) or judged to be inadequate, private Los Alamos evaluations, such as LA-7932-MS, are employed. The COVFILS-2-I group structure was chosen to give good energy resolution at high energies. It is a subset of the Los Alamos 187-group structure used in MATXS8.The groups are ordered in ENDF/B order (low-to-high) for all vector data and for the covariance matrices. Full (P0-P3) transfer matrices in normal high-to-low order for all scattering reactions present in the library are also included. The elements included are: H, Li6, Be, C.

5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM -

6. TYPICAL RUNNING TIME - The sample problem for only one material took 14 seconds on the IBM 3033 under the MVS operating system.

7. UNUSUAL FEATURES OF THE PROGRAM -

8. RELATED AND AUXILIARY PROGRAMS -

DLC-0138/01:

BOXR Reconstructs complete matrix from compressed
format

9. STATUS
DLC-0138/01: 07-JUL-1989 Tested at NEADB

10. REFERENCES  -
- D. W. Muir, " The Evaluation and Application of Redundant
  Cross-Section Covariances", LA-UR-86-3786-Rev (Nov. 1986)
DLC-0138/01:
- D.W. Muir :
  COVFILS-2 : Neutron Data and Covariances for Sensitivity and
  Uncertainty Analysis
  Fusion Technology 10(3) Part 2B, pp. 1461-1465 (November 1986)
- J.W. Davidson, D.J. Dudziak et al. :
  Recent Joint Developpements in Cross_Section Uncertainty Analysis
  at Los Alamos and EIR
  LA-UR-87-219 (Jnuary 1987)
- D.W. Muir,
  The Evaluation and Application of Redundant-Cross-Section
  Covariances.
  LA-UR-86-3786-Rev (November 1986)

11. MACHINE REQUIREMENTS -

12. PROGRAMMING LANGUAGE(S) USED -
DLC-0138/01: FORTRAN-77

13. OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED -

14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS -

15. NAME AND ESTABLISHMENT OF AUTHORS -
Contributed by:
                Radiation Shielding Information Center
                Oak Ridge National Laboratory
                Oak Ridge, Tennessee, U. S. A.
Developed by: Los Alamos National Laboratory
              Los Alamos, New Mexico, U. S. A.

16. MATERIAL AVAILABLE -
DLC-0138/01:
DLC0138_01.001    information file                                   85 records
DLC0138_01.002    information file in original package              172 records
DLC0138_01.003    BOXR FORTRAN-77 source                            194 records
DLC0138_01.004    74-grp neutron library                          16400 records
DLC0138_01.005    IBM JCL                                            16 records
DLC0138_01.006    Full BOXR input                                   987 records
DLC0138_01.007    Test problem BOXR input                             3 records
DLC0138_01.008    Test problem BOXR output                           26 records

17. CATEGORIES  -

- X.  Magnetic Fusion Research
- Z.  Data.

Keywords: COVARIANCE MATRICES, DATA UNCERTAINTIES, ENDF/B, FUSION REACTIONS, FUSION REACTORS, MULTIGROUP, NEUTRON CROSS SECTIONS, SENSITIVITY ANALYSIS

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