1. NAME AND TITLE
PRIMEDANA-2: Collapses Multigroup Cross Sections and Obtains Reaction Parameters by
Solving Transport or Diffusion Equations.
TEMPO: Produces effective cross sections for COLAPS, MED or ANALITS.
COLAPS: Collapses multigroup cross sections.
MEDS: Multigroup one-dimensional code for neutron physics computation of multizone fast breeders.
ANALITS: Source iteration method of solving multigroup diffusion equation.
BNAB-78: 26 neutron group cross section library.
BNAB-64: 26 neutron group cross section library.
Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, Sofia,
3. CODING LANGUAGE AND COMPUTER
Fortran IV; EC 1040 and IBM 3081.
4. NATURE OF PROBLEM SOLVED
PRIMEDANA-2 is a modular code system for neutron physics calculations of fast reactors.
5. METHOD OF SOLUTION
PRIMEDANA-2 prepares effective multigroup microscopic and macroscopic cross sections for
compositions characteristic of fast neutron reactors. The shielding factor approach is used. Optionally
the multigroup cross section library can be collapsed to a few-group cross section library. The
multigroup diffusion equation is solved using the method of the central finite differences and/or a new
6. RESTRICTIONS OR LIMITATIONS
7. TYPICAL RUNNING TIME
Sample cases execute in less than one minute on the IBM.
8. COMPUTER HARDWARE REQUIREMENTS
PRIMEDANA-2 was developed on the EC 1040 and runs on the IBM 360/370 and IBM 3081
9. COMPUTER SOFTWARE REQUIREMENTS
A Fortran IV compiler is required.
J. D. Jordanov and P. P. Groudev, "User's Guide for PRIMEDANA-2 System," Institute for
Nuclear Research and Nuclear Energy, Bulgaria (1988).
11. CONTENTS OF CODE PACKAGE
Included are the referenced document and one (1.2MB) DOS diskette which contains the source
code, sample problem input and output, and cross section libraries.
12. DATE OF ABSTRACT
July 1986; revised October 1987, April 1989 and November 1989.
KEYWORDS: NEUTRON; CROSS SECTION PROCESSING