1. NAME AND TITLE OF DATA LIBRARY

FGXXRS: Few Group Cross Section Library for Research Reactor Calculations

2. NAME AND TITLE OF DATA RETRIEVAL PROGRAMS

GITAPE: Group Independent TAPE processing.

3. CONTRIBUTOR

Korea Advanced Energy Research Institute, Daeduk-Danji, Choongham, Korea.

4. HISTORICAL BACKGROUND AND INFORMATION

Starting with the DLC-41C/VITAMIN-C fine-group cross section library, a composition-dependent coupled few-group (10n,7g) self-shielded microscopic ANISN-formatted cross section library was generated to be used for research reactor shielding calculations. FGXRRS was generated by collapsing DLC-41C/VITAMIN-C using the spectra of the zone-dependent total fluxes.

5. APPLICATION OF THE DATA

The data were collapsed from a fine-group structure using the weighting functions representative of a 20% enriched uranium fueled, D₂O reflected and pool type research reactor. Thus the application of this data for problems not similar to this type of problem should be done with caution.

6. SOURCE AND SCOPE OF DATA

The basic cross section source data for the generation of the FGXRRS cross section library was DLC-41C/VITAMIN-C neutron, secondary gamma-ray production, and gamma-ray interaction cross section library in AMPX master interface format. PSR-63/AMPX-II modules were used to prepare FGXRSS, which includes 78 materials. The Legendre order of expansion for angular distribution is 3.

7. DISCUSSION OF THE DATA RETRIEVAL PROGRAM

GITAPE selects elements to be used in a problem and prepares a group-independent cross section library tape for ANISN. Sample case input and output for running ANISN is included in the package.

8. DATA FORMAT AND COMPUTER

Card images; CDC CYBER.

9. TYPICAL RUNNING TIME

Not applicable.

10. REFERENCES

Jung-Do Kim, Kab-Soo Chung, Byung-Chul Lee, Eun-Hee Kim, and Ji-Bok Lee, "FGXXRS: A Few-Group Cross Section Library for Research Reactor Shielding Calculations," KAERI/TR-110/87 (August 1987).

11. CONTENTS OF LIBRARY

Included are the referenced document and one (1.2MB) DOS diskette.

12. DATE OF ABSTRACT

February 1988.