1. NAME AND TITLE

FLUKA-TRANKA: Three-Dimensional High-Energy Extranuclear Hadron Cascade Monte Carlo System for Cylindrical Backstop Geometries.

AUXILIARY ROUTINE

CASCA: Core of Cascade Calculator (Cylindrical Geometries).

2. CONTRIBUTOR

Radiation Group, European Organization for Nuclear Research (CERN), Geneva, Switzerland.

3. CODING LANGUAGE AND COMPUTER

FORTRAN IV; CDC 6600.

4. NATURE OF PROBLEM SOLVED

The hadron cascade codes, FLUKA and TRANKA, were designed to simulate high-energy nucleon-meson cascades in cylindrical geometries. They are applicable to both solid and hollow cylinders.

5. METHOD OF SOLUTION

Monte Carlo techniques are used, and all particle-production data are obtained from empirical fits to experimental data. TRANKA and FLUKA differ in their treatment of energy conservation in collisions. In TRANKA, energy is not conserved in an individual collision but only when averaged over a large number of collisions. In FLUKA, energy is conserved at each collision. TRANKA utilizes variance-reduction techniques and is, therefore, applicable to deep-penetration studies.

6. RESTRICTIONS OR LIMITATIONS

Only particles above 50 MeV are transported, and, therefore, no detailed information can be obtained about the lower energy particles produced in the cascade.

7. TYPICAL RUNNING TIME

No study has been made by RSIC of typical running times for FLUKA-TRANKA.

8. COMPUTER HARDWARE REQUIREMENTS

FLUKA-TRANKA is operable on a CDC 6600 computer.

9. COMPUTER SOFTWARE REQUIREMENTS

A FORTRAN IV compiler is required.

10. REFERENCES

J. Ranft and J. T. Routti, "FLUKA and MAGKA, Monte Carlo Programs for Calculating Nucleon-Meson Cascades in Cylindrical Geometries," CERN LABII-RA/71-4 (November 1971).

J. Renft and J. T. Routti, "Simulation of Deep Penetration Hadron Cascades, Description of Program TRANKA," CERN LABII-RA/72-4 (April 1972).

11. CONTENTS OF CODE PACKAGE

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

12. DATE OF ABSTRACT

May 1975.