Development of McCad as an integrated interface tool for the CAD to MC geometry conversion

McCad is developed as an integrated interface tool at the Karlsruhe Institute of Technology (KIT) It enables the conversion of CAD models into representations for Monte Carlo (MC) particle transport simulations applied in design analyses of fusion and fission reactors. This paper introduces the significant algorithms and functions of McCad. In addition, newly developed interfaces and a new software architecture are presented as well. The current version of McCad has been applied to various modeling applications in fusion technology demonstrating its suitability for the conversion of large and complex geometry models such as the ITER device and the EU DEMO reactor. (authors)