The new GeoModel suite, a lightweight detector description and visualization toolkit for HEP

Abstract The GeoModel toolkit is an open-source suite of standalone tools that provides the user with lightweight to describe, visualize, test, and debug detector descriptions geometries for HEP studies experiments. has been designed independence responsiveness in mind offers a development environment free other large frameworks, very quick cycle. With few dependencies, easy install on all systems, modular way; pre-compiled binaries are provided major platforms, installation. Coded entirely C++, describe inside C++ code or external XML files, create persistent representation low disk footprint interactively visualize inspect geometry 3D view. It also plugin mechanism optional Geant4 application simulate described environment. developed as part software ATLAS experiment at LHC, evolved towards experiment-independent toolkit. In this contribution, we available tools, focus latest additions, which provide users more visualization, debug, simulation tools.