.. _sec-csas.utils:

C5toC6: Input File Conversion Programs for CSAS
===============================================

*K. Bekar*

Introduction
------------

Program C5TOC6 can be used to automatically convert a CSAS5 input
file to a CSAS6 input file. This
functionality can be useful when converting a KENO V.a validation
sequence to a KENO-VI validation sequence. It removes the problem of
introducing a mistake or inadvertently changing the data when remodeling
a geometry to the KENO-VI format. For some cases, however, the converted
model may be a very inefficient KENO-VI model.

Description and Input Guide
---------------------------

C5TOC6 is
a utility program that can be used to automatically convert a CSAS5
input file to a CSAS6 input file. For  C5TOC6, the "=CSAS\ *BB*\ "
record in the input stream (where
the *BB* is 5, 25, or 2x) is replaced by "=C5TOC6 PARM=CSAS5." The
output file is named \_geom\ *nnnnnnn* where *nnnnnnn* is a unique
7-digit number.

.. important::
  The conversion makes no attempt to optimize the output file,
  so it almost surely will be inefficient in its
  use of storage, and in its use of bodies. This can lead
  to models that are very inefficient in their running time also.

The input/output (I/O) units for C5TOC6 are given below.

+-------------+---------------------------------------------+
| Unit Number | Function                                    |
+-------------+---------------------------------------------+
| 5           | CSAS5 input file                            |
|             |                                             |
| 6           | Output                                      |
|             |                                             |
| 7           | Input file generated for  CSAS6)            |
+-------------+---------------------------------------------+

A sample C5TOC6 sample input file and corresponding converted CSAS6
input file are shown in :numref:`list2-6-3` and :numref:`list2-6-4`, respectively.

.. code-block:: scale
  :name: list2-6-3
  :caption: Sample C5TOC6 problem.

  =c5toc6    parm=csas25
  sample problem 1  case 2c8 bare
  v7.1-252
  read composition
     uranium  1 den=18.76 1 293 92235 93.2 92238 5.6 92234 1.0 92236 0.2 end
  end composition
  read parameters
     flx=yes fdn=yes far=yes htm=no
  end parameters
  read geometry
     unit 1
       cylinder 1 1 5.748 5.3825 -5.3825
       cuboid  0 1 6.87 -6.87 6.87 -6.87 6.505 -6.505
  end geometry
  read array
     nux=2 nuy=2 nuz=2  fill f1 end fill
  end array
  end data
  end

.. code-block:: scale
  :name: list2-6-4
  :caption: Sample converted CSAS6 output file.

  =csas26
  sample problem 1  case 2c8 bare
  v7-252
  read composition
       uranium  1 den=18.76 1 293 92235 93.2 92238 5.6 92234 1.0 92236 0.2 end
    end composition
  read parameters
  flx=yes fdn=yes far=yes htm=no
  end parameters
  read geometry
  unit          1
  cylinder   1
                5.748000000E+00  5.382500000E+00 -5.382500000E+00
              origin   x=  0.000000000E+00   y=  0.000000000E+00
  media     1    1       1
                      vol=  8.938968621E+03
  cuboid     2
                6.870000000E+00 -6.870000000E+00  6.870000000E+00
               -6.870000000E+00  6.505000000E+00 -6.505000000E+00
  media     0    1       2  -1
                      vol=  1.071004479E+04
  boundary     2
  global unit         2
  cuboid 1
                2.748000000E+01  0.000000000E+00  2.748000000E+01
                0.000000000E+00  2.602000000E+01  0.000000000E+00
  array      1  1
                 place 1 1 1   6.870000000E+00  6.870000000E+00  6.505000000E+00
  boundary 1
  end geometry
  read array
  nux=2 nuy=2 nuz=2  fill f1 end fill
  end array
  end data
  end