1. NAME AND TITLE

KENO-IV/CRC: An Improved Multigroup Monte Carlo Criticality Code System for Cross Section Processing.

AUXILIARY ROUTINE

HRCON: Converts Hansen-Roach Library from BCD to Binary Format.

DATA LIBRARY

HRLIB: Hansen-Roach Cross Section Library.

2. CONTRIBUTOR

Century Research Center Corporation, Tokyo, Japan.

3. CODING LANGUAGE AND COMPUTER

Fortran IV; Cray-1.

4. NATURE OF PROBLEM SOLVED.

KENO-IV¹ is an improvement and extension of KENO² which was contributed by Oak Ridge National Laboratory and written for the IBM 360 computer. It is flexibly dimensioned, utilizes free-form input, and offers more geometry options than KENO. KENO-IV solves nuclear criticality eigenvalue problems. The results calculated by KENO-IV include k-effective, lifetime and generation time, energy-dependent leakages and absorptions, energy- and region-dependent fluxes and region-dependent fission densities. Criticality searches can be made on unit dimensions or on the number of units in an array. KENO-IV/CRC has several added features which include a neutron balance edit, PICTURE³ routines to check the input geometry, and a random number sequencing subroutine written in Fortran for the Cray-1 computer.

5. METHOD OF SOLUTION

KENO-IV/CRC solves the Boltzman neutron transport equation using Monte Carlo methods.

6. RESTRICTIONS OR LIMITATIONS

The program is flexibly dimensioned so the allowed size of a problem is limited only by the total data storage available.

7. TYPICAL RUNNING TIME

Running times are highly problem dependent on the complexity of the geometry, the number of energy groups, and the type of materials in the problem.

8. COMPUTER HARDWARE REQUIREMENTS

At least one scratch unit is necessary and a minimum of about 200 K core is required to hold the program and problem data. The options specified for any given problem determine any additional units that will be needed (input cross sections, input weights for automatic reflector regions, input albedo data, input restart data, and output restart data.)

9. COMPUTER SOFTWARE REQUIREMENTS

A Fortran IV compiler is required.

10. REFERENCES

a. Included in the documenation:

"Features of the Cray-1 Converted KENO-IV," Informal Notes (September 1982).

L. M. Petrie and N. F. Cross, "KENO IV - An Improved Monte Carlo Criticality Program," ORNL 4938 (November 1975).

References for KENO IV Support Codes.

D. C. Irving, and F. W. Morrison, "PICTURE: An Aid in Debugging GEOM Input Data," ORNL-TM-2982 (May 1970).

G. R. Handley and J. N. McLeod, "A Users Manual for HANDY," Y-1615 (June 1968).

b. Background information:

G. E. Whitesides and N. F. Cross, "KENO - A Multigroup Monte Carlo Criticality Program," CTC-5 (1969).

D. C. Irving and G. W. Morrison, "PICTURE: An Aid in Debugging GEOM Input Data," ORNL/TM-2892 (May 1970).

11. CONTENTS OF CODE PACKAGE

Included are the referenced document (10.a) and one (1.2MB) DOS diskette which contains the source code and sample problem input and output.

12. DATE OF ABSTRACT

November 1982, updated August 1991.