INDC(IND)-35G - IAEA Nuclear Data Services

- 46 -
COMPLOT : A Prorrain for Comparison of the Multigroup Constants
(M.M.Rnmanadhan)
Program COMPLOT compares the values of the multi-
group constants obtained from the nuclear data processing
code RAMBHA 2 with those obtained from the 19-69 adjusted
French cross section set . The program has also been utilized
for comparing multigroup data sets derived from the same
basic file using different processing approximations. The
output can be in a tabular form or as m graphic plot depending
on the option exercised In the input, for various isotopes and
for different reaction*. Option also exists for listing the
various multigroup constants for any particular isotope in
SIDTO format* With suitable modifications the cods -an sasily
be adapted for comparison of the multigroup constants from
various evaluated data libraries..
This program plays a major role in checking, plotting
correcting and processing of SETR formatted multigroup
libraries. Using this program many of the physj.es aspects of
cross sections of any particular isotope can be verified by
graphical. plots and comparison tables. ' This ensures
automatic checking of the enormous amount of numerical data
that go into the various multigroup sets for various energy
ranges, reactions and nuclides. The importance of these
comparisons-study during the preparation of a new multigroup
cross section, set for a given isotope is quite enormous for
it quickly identifies any large deviations between the new
and old cross sections and also to the identifications of
problem areas forsensitivity studies in subsequent analysis
of critical experiments to valicite the new multigroup
cross section data. The specifications of this COMPLOT
program have been documented in Ref.1.