1. NAME AND TITLE

HETC-KFA1: The KFA Version of the High-Energy Monte Carlo Transport Code HETC and the Generalized Evaluation Code SIMPEL.

AUXILIARY ROUTINES

SIMPEL: General Analysis Code for Event Chains and Particle Data.

MORSE: A General Purpose Monte Carlo Multigroup Neutron and Gamma- Ray Transport Code System.

2. CONTRIBUTOR

Institut für Reaktorentwicklung der Kernforschungsanlage Jülich GmbH, Federal Republic of Germany.

3. CODING LANGUAGE AND COMPUTER

Fortran IV; IBM 3033. (C00496I303300)

4. NATURE OF PROBLEM SOLVED

Updates have been made to the high-energy transport code HETC for use in the German spallation-neutron source project SNQ. Theoretical methods that are capable of predicting a variety of different quantities related to radiation fields produced by proton beams and their associated effects, both in the vicinity of the target station and from beam losses which occur in the accelerator, were of interest. It was desirable that the calculational model be sufficiently general to be usable for investigations of potential applications of spallation sources for various purposes.

5. METHOD OF SOLUTION

Satisfaction of the needs requires rather general calculational methods which can incorporate numerous physics modules for treating the various types of interaction mechanisms that take place and which are capable of accommodating complex geometries and material configurations. This leads to large Monte Carlo computer codes which is the type of calculational method considered for HETC-KFA. The current version is denoted HETC-KFA1. The subsidiary code, SIMPEL, was written for general analysis of the HETC output. In addition, means of coupling to low energy transport programs, such as the Monte Carlo code MORSE, was provided.

6. RESTRICTIONS OR LIMITATIONS

Local ORNL assembler routines are provided for use with the general geometry option.

7. TYPICAL RUNNING TIME

No study has been made by RSIC of typical running times for HETC-KFA1.

8. COMPUTER HARDWARE REQUIREMENTS

HETC-KFA1 is operable on the IBM 3033 computer.

9. COMPUTER SOFTWARE REQUIREMENTS

A Fortran IV compiler; IBM assembler.

10. REFERENCES

a. Included in documentation:

P. Cloth, D. Filges, G. Sterzenbach, T. W. Armstrong and B. L. Colborn, "The KFA-Version of the High-Energy Transport Code HETC and the Generalized Evaluation Code SIMPEL," Jul-Spez-196 (March 1983).

b. Background information:

T. W. Armstrong, K. C. Chandler, "HETC, Monte-Carlo High Energy Nucleon Meson Transport Code," ORNL-4744 (January 1972).

T. W. Armstrong, K. C. Chandler, "HETC - A High Energy Transport Code," Nucl. Sci. and Engr. 49, 110 (1972). M. B. Emmett, "The MORSE Monte Carlo Radiation Transport Code System," ORNL-4972 (1975).

11. CONTENTS OF CODE PACKAGE

Included are the referenced document in (10.a) and four DS/HD 3.5-in. (1.44 MB) diskettes in self-extracting compressed DOS files which contain the source codes, sample problem input and output, and data libraries.

12. DATE OF ABSTRACT

June 1986; updated July 1987; December 1987.

KEYWORDS: MONTE CARLO; NUCLEON; NEUTRON; PROTON; MESON; COMPLEX GEOMETRY; HIGH ENERGY