Reusing Code from FLUKA and GEANT4 Geometry

The aim of the project is to investigate the feasibility of integrating the GEANT4 geometry facilities with FLUKA physics treatment, and eventually release a production application. This will allow to perform cross-checking of physics results, using completely independent physics packages (GEANT4 and FLUKA) tracking in the same geometry. This note summarises the basic requirements of Multiple Language Programming (with a special focus on the problems involved in integrating C++ and FORTRAN code). It also outlines the structure of the new application, and some positive results.