ATLAS Software & Computing week was held at CERN, Geneva, Switzerland. Starting from Monday, 17 of October, 2011. First time GCCEC was participating in simulation session and presenting results of comparison of G4óFLUGG geometries done in CATIA. GCCEC recently join to new project with ATLAS simulation team developing geometry descriptions of volumes in simulation packages by implementation of CATIA and Smarteam engineering databases. Comparison of above mentioned volumes was first study for the simulation team. Download report here …