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Reading GIFT5 Geometry
Some versions of the MORSE Monte Carlo transport code use the GIFT5 geometry package1 originally developed by the Ballistic Research Laboratory. This figureshows a GIFT5 model of interest to the Army. We have implemented the ability to read GIFT5 geometry models in the White Rock Science Moritz code so that these models can be converted to MCNP geometry format. The GIFT5 file is assumed to be in fixed column (rather than free form) format. GIFT5 is based on combinatorial solid body geometry.
Most of the GIFT5 solid bodies are the same as or equivalent to those supported by Moritz. Some names are different, such as Right Angle Wedge (RAW) instead of WED. The ellipsoid is defined differently than the ELL. We have added some support for the Truncated Elliptical Cone (TEC); it is not shown on the Body dialog. The correct TEC orientation seems to be the reverse of the GIFT5 documentation; Reverse TEC should be checked on the 3D Advanced Options property page. Three GIFT5 solid bodies are not defined in Moritz: Arbitrary Convex Polyhedron of N Vertices (ARBN), Triangular Surfaced Polyhedron (ARS), and Truncated General Cone (TGC). The general form of the TGC leads to a 4th order surface that is not supported by MCNP. Both the ARBN and ARS bodies are bounded by planes; support for them will be added in the future.
1J. A. STODDARD, S. D. EGBERT, AND W. D. SCOTT, Jr., The Vehicle Code System with In-Group Energy Bias and GIFT5 Geometry, DNA-TR-87-23, Science Applications International Corporation, (January 1987).
 White Rock Science http://www.whiterockscience.com/wrs.html 505 672 1105 |
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shows a
GIFT5 model of interest to the Army. We have implemented the ability to
read GIFT5 geometry models in the White Rock Science Moritz code so
that these models can be converted to MCNP geometry format. The GIFT5
file is assumed to be in fixed column (rather than free form) format.
GIFT5 is based on combinatorial solid body geometry.