Geant4 (GEometry ANd Tracking) is a toolkit for the simulation of the passage of particles through matter. It was designed for the next-generation of High Energy Physics (HEP) experiments, with primary requirements from the LHC, the CP violation and heavy ion experiments. Its application areas include HEP and nuclear experiments, medical, accelerator and space physics studies. Geant4 exploits advanced software engineering techniques and object-oriented technology to achieve the transparency of the physics implementation, and hence provide the possibility of validating the physics results. It was developed by RD44, a worldwide collaboration of about 100 scientists from over 40 institutions and laboratories participating in more than 10 experiments in Europe, Russia, Japan, Canada and the United States.

Collaborators
CERN, Bulgaria, Canada, Finland, France, Germany, Hungary, India, Italy, Japan, Netherlands, Russia, Spain, Switzerland, United Kingdom, United States

Contact
See the contacts webpage

http://geant4.web.cern.ch/geant4/