CCC-0510 KENO-IV(RG).

1. NAME OR DESIGNATION OF PROGRAM:  KENO-IV(RG).

3. DESCRIPTION OF PROGRAM OR FUNCTION

KENO-4(RG) is an extension of KENO-4 to allow random geometry (RG) descriptions of materials in the geometry model. This version can be used in the case where the geometry of materials is too complex, such as in the case of dumped  Raschig rings, for description using ordinary mathematical models. KENO-4 solves nuclear criticality eigenvalue problems. The results calculated by KENO-4 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.

4. METHOD OF SOLUTION

KENO-IV(RG) solves the Boltzmann neutron transport equation using Monte Carlo methods. In the random geometry model, the material thickness of solution or ring along the neutron  path is randomly chosen from its predetermined material thickness distribution function, simulating the random orientation or Raschig  rings in the solution. These distributions have been obtained experimentally and verified by "mathematical tests".

5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

The number of solution thicknesses and dumped material thicknesses are each limited to 100.

6. 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.

7. UNUSUAL FEATURES OF THE PROGRAM:

8. RELATED AND AUXILIARY PROGRAMS:

10. REFERENCES

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

- S. Teng and D. Lindstrom:
  KENO-IV(RG) User's Manual Supplement to KENO-IV Manual: ORNL-4398.
  OU-AMNE-78-7  (October 1978)
- L.M. Petrie and N.F. Cross:
  KENO-IV - An Improved Monte Carlo Criticality Program.
  ORNL-4938  (November 1975)

11. MACHINE REQUIREMENTS:  FACOM M280. The code was developed on an IBM  370/158.

13. OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED:

14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS:

15. NAME AND ESTABLISHMENT OF AUTHORS

                 University of Oklahoma
                 Norman, Oklahoma, U. S. A.
          and
                 National Tsing-Hua University
                 Hsinchu, Taiwan, Republic of China

source program   mag tapeSource Program (Fortran)                   SRCTP
test-case data   mag tapeSample Input                               DATTP
test-case output mag tapeSample Output                              OUTTP
test-case data   mag tapeJCL                                        DATTP
symb data lib    mag tapeHansen-Roach Cross Sections                LBSTP
symb data lib    mag tapeWeight Data                                LBSTP
source program   mag tapeDate and Time Routines (Assembler)         SRCTP
source program   mag tapeDynamic Storage Routines (Assembler)       SRCTP
source program   mag tapeRandom Number Package (Assembler)          SRCTP
source program   mag tapeInterval and Time Routines (Assembler)     SRCTP
source program   mag tapeLogical Operations Routines (Assembler)    SRCTP
report                   OU-AMNE-78-7  (October 1978)               REPPT
report                   ORNL-4938  (November 1975)                 REPPT