RSIC COMPUTER CODE PSR-091

1. NAME AND TITLE

COMAND: A Multigroup ANISN Cross Section Data Library Collapsing Code System.

2. CONTRIBUTOR

Oak Ridge National Laboratory, Oak Ridge, Tennessee.

3. CODING LANGUAGE AND COMPUTER

Fortran IV; IBM 360/370.

4. NATURE OF PROBLEM SOLVED

COMAND (Collapse Multigroup ANISN Data) collapses ANISN libraries.

5. METHOD OF SOLUTION

COMAND accepts cards or tapes. It truncates upscatters, downscatters, combines ANISN data from up to 5 sources, and allows for stripping groups (neutrons or gammas) from the base library. Several weighting spectra can be read in and used on the same computer run.

6. RESTRICTIONS OR LIMITATIONS

None noted.

7. TYPICAL RUNNING TIME

No study has been made by RSIC of typical running times for COMAND.

8. COMPUTER HARDWARE REQUIREMENTS

COMAND is operable on the IBM 360/370 computers.

9. COMPUTER SOFTWARE REQUIREMENTS

A Fortran IV compiler is required.

10. REFERENCE

"COMAND - AMPX Module to Collapse ANISN Cross Section Libraries."

11. CONTENTS OF CODE PACKAGE

Included are the referenced document and one (1.2MB) DOS diskette which contains the source code and sample problem input and output.

12. DATE OF ABSTRACT

March 1984.