RSIC COMPUTER CODE PSR-071
1. NAME AND TITLE
SPECTRANS-2: Neutron Spectrum Library Generation.
DPP: Draws coordinate systems.
Health Physics Department, Central Research Institute for Physics, Budapest, Hungary.
3. CODING LANGUAGE AND COMPUTER
ICL-1900 Fortran; ICL-1900.
4. NATURE OF PROBLEM SOLVED
SPECTRANS-2 makes a neutron spectrum library by standardizing neutron spectra in 48
predetermined energy intervals independently from the original interval distribution. It also calculates
kerma and dose-equivalent spectra as well as dose fractions and average energy.
5. METHOD OF SOLUTION
SPECTRANS-2 creates a standardized spectrum from the input spectrum. This is done by Lagrange and linear interpolation. In each standardized energy interval the program determines both interpolations, compares the results, and the result that approximates the input function better in the given interval is used for further calculation.
After each computation the spectra are drawn by an off-line plotter. The original and standardized
spectra as well as the calculated data are available from the spectrum library.
6. RESTRICTIONS OR LIMITATIONS
The dimension of the input spectra is limited by 200 points but it can be extended if required. The
conversion factors to kerma and dose-equivalent are placed in a DATA subroutine and the standardized
energy intervals are there, too. Therefore, they are changeable.
7. TYPICAL RUNNING TIME
The longest running time for each operation is about 3 minutes with the following conditions: the
library tape consists of no more than 100 spectra; the input points of a spectrum are below 100.
8. COMPUTER HARDWARE REQUIREMENTS
SPECTRANS-2 is operable on the ICL-1900 computer and requires 32 K of memory. Three tape
units, standard I/O devices, and a graph plotter are used. With the exception of the modes DOSEVA
and PLOT, it is operable without a plotter.
9. COMPUTER SOFTWARE REQUIREMENTS
A Fortran IV compiler can be used if the subroutine DPP is placed among the standard library
J. Palfalvi, "SPECTRANS-2, A Modified Computer Code for Standardizing Neutron Spectra," KFKI-73-57 (June 1973).
S. Makra, J. Palfalvi, P. Zarand, ":Calculation and Comparison of Leakage Neutron Spectra,"
KFKI-72-67 [IAEA/SM-167/29] (December 1972).
11. CONTENTS OF CODE PACKAGE
Included are the referenced documents and one (1.2MB) DOS diskette which contains the source
code and DPP subroutine input.
12. DATE OF ABSTRACT
KEYWORD: DATA PROCESSING, SPECTRA