Geant4

A Monte Carlo simulation toolkit (absolutely free) widely used to understand the conceptual design in physics or science (specially bio and space physics) and to optimize any new device or tool. The Geant4 simulation toolkit is developed by CERN scientists and engineers. The full form of Geant4 is GEometry ANd Tracking,.

The installation of Geant4 is tricky and easy. I will try to give you a way to start with installing Geant4 in linux (Debian 16.04 UBUNTU LTS), and later will learn few basic concepts to link c++ files.

Acknowledgements: CERN Team, GEANT4 Team