1. NAME AND TITLE OF DATA LIBRARY

JFS: 70 Group Neutron Fast Reactor Cross Section Set and 25 Group Neutron Fast Reactor Cross Section Set.

2. NAME AND TITLE OF DATA RETRIEVAL PROGRAMS

The CONDENSE CODE was prepared to collapse both the JAERI 70 Group and 25 Group Fast-Set.

3. CONTRIBUTOR

Japan Atomic Energy Research Institute, Tokai-mura, Naka-gun, Ibaraki-ken 319-11, Japan, through the Nuclear Energy Agency Data Bank, Gif-sur-Yvette, France.

4. HISTORICAL BACKGROUND AND INFORMATION

Japanese Evaluated Nuclear Data library DLC-070/JENDL-1 has been developed in JAERI in cooperation with Japanese Nuclear Data Committee. JENDL-2B is an updated version of JENDL-1. The group constant set of the JFS-2 type generated from JENDL-2B was called JENDL-2B-70 and is used for the analyses in JUPITER (Japanese United States Program of Integral Tests and Experimental Researches) project. JFS-3-J2 is an advanced set for JENDL-2B-70.

5. APPLICATION OF THE DATA

These multigroup cross sections are used in fast reactor calculations. The benchmark calculations for the 23 fast critical assemblies used in the benchmark tests of JFS-2 were performed with one-dimensional diffusion theory by using the JFS-3-J2 set.

6. SOURCE AND SCOPE OF DATA

The JFS set is an advanced set for JENDL-2B-70 which was produced as the group constants of the JAERI-Fast set type. The JFS has been produced with the use of the processing code system CONDENSE. Shielding factors are provided for 8 background cross sections (0 and 1 to 10⁶ in decades), temperatures of 300-, 800-, 2100-, and 4500-K and 4 mutual shielding parameters for important heavy resonant materials.

The library contains data for the following elements:

¹⁰B, ¹¹B, C, O, Na, Al, Cr, Fe, Ni, Cu, ²³⁵U, ²³⁸U, ²³⁹Pu, ²⁴⁰Pu, ²⁴¹Pu.

7. DISCUSSION OF THE DATA RETRIEVAL PROGRAM

The CONDENSE Code was prepared to collapse "The JAERI-Fast-Set Version-1 70 Group Set" to "25-Group Set."

8. DATA FORMAT AND COMPUTER

EBCDIC card images; IBM 3033.

9. TYPICAL RUNNING TIME

No study has been made by RSICC of typical running times for JFS.

10. REFERENCES

a) Included in documentation:

Satoru Katsuragi, Tatsuzo Tone, and Akira Hasegawa, "JAERI Fast Reactor Group Constant Systems Part 1," JAERI-1195 (August 1970).

Satoru Katsuragi, Yukio Ishiguro, Hideki Takano, and Masayuki Nakagawa, "JAERI Fast Reactor Group Constants Systems Part 2," JAERI-1199 (December 1970).

Satoru Katsuragi, Hideki Takano, Masayuki Nakagawa, and Akira Hasewawa, "JAERI Fast Reactor Group Constants Supplement No. 1" (November 1971).

b) Background information:

Satoru Katsuragi, Tomoo Suzuki, "EXPANDA: The One Dimensional Equation Code for Fast Reactors," JAERI-1091 (August 1965).

Tomoo Suzuki and Satoru Katsuragi, "EXPANDA-2: Improvement of the EXPANDA, The One Dimensional Diffusion Equation Code for Fast Reactors," JAERI-1118 (November 1966).

Tomoo Suzuki and Satoru Katsuragi, "JAERI-FAST-SET EXPANDA-4, The One Dimensional Diffusion Equation Code for Fast Reactors using the JAERI-FAST-SET," JAERI-Memo 3660 (July 1969).

11. CONTENTS OF LIBRARY

Included are the referenced documents and one (1.2MB) DOS diskette which contains the cross section data.

12. DATE OF ABSTRACT

June 1984.