MCNP and Sabrina Input Files

The Write MCNP Input, Write Sabrina Input, and Write Moritz Input buttons show a standard Windows file selection dialog for choosing the filename for the output. The last directory used is saved in the bodybuilder.ini file. Suffixes .mcn and .sab are expected for MCNP and Sabrina/Moritz files, respectively.

The Sabrina and Moritz files is meant to be used with Sabrina and Moritz, not with MCNP. It includes only the geometry portion of the MCNP input file. It does not include material definitions, tally cards, and other MCNP data cards. It does include the cell colors and transparency states. To enable their color and transparency to be easily set by material, the Undifferentiated Tissue and Skin are assigned distinct material IDs (5 and 6) in the Sabrina file. (In the MCNP input, they share the same soft material composition with the soft organs-everything besides Skeleton and Lungs.)

Files sent to Moritz include comments in the MCNP input with commands to enhance the 3D display of the model. Most are similar to one of

c moritz alt 99 1 -2 3
c moritz st c 99 wire

The ‘c moritz’ string precedes a Moritz command. Alt specifies an alternate cell description that is used only for the 3D display. These descriptions often remove surfaces introduced to prevent small overlaps or exclusion of organs in container cells. The ST command specifies a wireframe style for a cell. The commands are also included in MCNP and Sabrina input files when Include Moritz Hints is checked in the File menu.

The MCNP input file does contain the material definitions, along with tally cards as chosen, a MODE card, and several typical data cards in the form of comments. To use the latter, delete the C in column 1 and supply the desired value.


White Rock Science Logo Last modified: September, 2004
Kenneth A. Van Riper / email