1. NAME AND TITLE OF DATA LIBRARY

 HUGO: Photon Interaction Data in ENDF/B-V Format.

2. NAME AND TITLE OF DATA RETRIEVAL PROGRAMS

 HUGO: Computer Code for Editing Photon Interaction Data in ENDF Format.

 COMP23: Computer Code for Editing and Comparing Two Photon Interaction Cross- Section Libraries in ENDF Format.

3. CONTRIBUTORS

 Oak Ridge National Laboratory, Oak Ridge, Tennessee.

National Bureau of Standards, Washington, D.C.

Lawrence Livermore National Laboratory, Livermore, California.

4. HISTORICAL BACKGROUND AND INFORMATION

 The HUGO library is the most recent in a series that have been distributed from the Radiation Shielding Information Center while serving as the official set that is recommended for inclusion in a particular version of the Evaluated Nuclear Data File (ENDF/B). Earlier versions were distributed under the designation DLC-7/HPICE. The evaluated sets are generally a collaborative effort lead by the National Bureau of Standards and Lawrence Livermore National Laboratory. The role of RSIC is that of a reviewer and assembler of data from a variety of sources and forms into a library in proper format. This is followed by a review and correction phase that utilizes the expertise of the evaluators and potential users of the data. This current library is accepted as part of ENDF/B-V.

5. APPLICATION OF THE DATA

 The DLC-99/HUGO data can be used as a basic source of photon interaction data for radiation transport calculations. Many applications require the multigroup representation and in that case the HUGO will have to be processed by the standard multigroup processing code systems. The data is in ENDF/B-V format, but systems that accept ENDF/B-IV formats can be easily modified to accept HUGO.

6. SOURCE AND SCOPE OF DATA

 Data are provided for elements with atomic number in the range Z=1 to 100. Both cross-section data (ENDF file 23) and coherent scattering form factors and incoherent scattering functions (ENDF file 27) are included. The energy range is 1 kev to 100 Mev. During the compilation exercise, an editing computer code EDPHOT was modified and updated to handle ENDF/B-V formats and was added to the DLC/HUGO package. Another computer code, COMP23, which was used to compare DLC-99 with DLC-7 during the review phase, is also part of this package.

7. DISCUSSION OF THE DATA RETRIEVAL PROGRAMS

 Two computer codes, EDPHOT for selectively printing the data and COMP23 for comparing two photon interactions, are provided.

8. DATA FORMAT AND COMPUTER

 Card images; IBM 3033.

9. TYPICAL RUNNING TIME

 On the IBM 3033, the EDPHOT sample problem for EDPHOT ran in 6 s and the while that for COMP23 ran in 3 s.

10. REFERENCES

 R. W. Roussin, J. R. Knight, J. H. Hubbell, R. J. Howerton, Description of the DLC-99/HUGO Package of Photon Interaction Data in ENDF/B-V Format, ORNL/RSIC-46 (ENDF-335) (December 1983).

R. Kinsey, Ed., Data Formats and Procedures for the Evaluated Nuclear Data File, ENDF/B-V, BNL- NCS-50496 (ENDF-102), (October 1979). [Selected pages describing the format of photon interaction data].

11. CONTENTS OF PACKAGE

 The package contains references listed above and the photon interaction data on one (1.2MB) DOS diskette.  Programs for editing and comparing the data and sample input and output are provided.

12. DATE OF ABSTRACT

 November 1983; October 1984; March 1987.