ROBAST is a non-sequential ray-tracing simulation library which is aimed for wide use in optical simulations of cosmic-ray and gamma-ray telescopes. The library is written in C++ and fully utilizes the geometry library of the ROOT analysis framework. ROBAST offers several functionalities required for ray-tracing simulations of cosmic-ray telescopes.

The advantages of using ROBAST are

• Easy to build complex telescope geometries using TGeo* and AGeo* classes (ROOT and ROBAST classes, respectively)
• Runs on both OS X and Linux
• Scriptable in C++ and Python
• Easy to learn even if you could not be a Geant4 expert
• Direct analysis of simulation results in ROOT

For more details, please visit the ROBAST website (http://robast.github.io/ )

Akira Okumura (Institute for Space-Earht Environmental Research, Nagoya University) [email protected]

LGPL