Geant4

<p>Geant4 (for GEometry ANd Tracking) is a <a href="/facts/Platform_(computing)/DmKwp5Bk">platform</a> for "the <a href="/facts/Simulation/Q4QJV1oI">simulation</a> of the passage of <a href="/facts/Elementary_particle/CTFDM97U">particles</a> through <a href="/facts/Matter/osyc04UN">matter</a>" using <a href="/facts/Monte_Carlo_methods/AkHjY7jc">Monte Carlo methods</a>.  It is the successor of the <a href="/facts/GEANT_(program)/wGC9QoQl">GEANT</a> series of software toolkits developed by The Geant4 Collaboration, and the first to use <a href="/facts/Object_oriented_programming/TxNMEcao">object oriented programming</a> (in <a href="/facts/C%2B%2B/Et0F2qn9">C++</a>). Its development, maintenance and user support are taken care by the international Geant4 Collaboration. Application areas include <a href="/facts/High_energy_physics/YgIuyj2t">high energy physics</a> and <a href="/facts/Nuclear_reaction/202yClUr">nuclear</a> experiments, <a href="/facts/Particle_accelerator/Pkuc08xC">accelerator</a> and <a href="/facts/Space_physics/TfenH2xr">space physics</a> studies. The software is used by a number of research projects around the world.
</p><p>The Geant4 software and source code is freely available from the project web site; until version 8.1 (released June 28, 2006), no specific software license for its use existed; Geant4 is now provided under the Geant4 Software License.
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Geant4 open-in-new

Geant4