2. Configuration

User defined settings are stored in configuration.xml file. The file is read by its own name in executable directory. Input directory could be switched by flag -i (–inputs) as follows:

openbps -i /path/to/configure.xml

All OpenBPS option are listed below:

-i, --inputs

Placement of configure.xml

-o, --output

Output director to store results file

-v, --verbose

Printing out execution log to the console

The minimum required information to start simple decay problem (i.m. without external source) for 1 second with 1 step containing in Configure.xml presented below:

<configure>
  <chain>/pathto/chain_endfb71.xml</chain>
  <inpmaterials>/pathto/materials.xml</inpmaterials>
  <outpmaterials>/pathto/materials.xml</outpmaterials>
  <numbers>1</numbers>
  <timestep>1.0</timestep>
  <decaykey>true</decaykey>
</configure>

The text of each record in example matches the value of according parametres.

3. Calculation keys

decaykey is a calculation key which means the calculation without reading a reactions file. The others most imortant keys are:

• decay_print printing output information in outlog.csv with constitution of one defined by <filters> section(by default False)

• uncertanties switched on a uncertainty calcaulation in main execution process. Allowed only with iteration <mathod>

• outwrite defined whether or not printing information in <outpmaterials> xml file (by default True)

4. Filters

Output data written in outlog.csv could be manipulated by <filters> Element block in Configure.xml. By default in file printing 2 values in 4 columns by time placed in row : Act - activity in [Bk] and decay heat in [eV] with their according uncertainties along with time. One filters differs from another by type attribute. header modificate default 4 values (by except time); nuclide including new columns with nuclear concentration for time for presented nuclides; time define time intevals for which data be printing; materials restrict a materials for which data be printing; exnuclide for nuclides presented in that list their fraction be excluded from values of activity and decay heat.