Since then two groups have re-written the code with new physics: EGSnrc is a general-purpose software toolkit that can be applied to build Monte Carlo simulations of coupled electron-photon transport, for particle energies ranging from 1 keV to 10 GeV.
The EGSnrc implementation improves the accuracy and precision of the charged particle transport mechanics and the atomic scattering cross-section data.
[4][5][6] The charged particle multiple scattering algorithm allows for large step sizes without sacrificing accuracy - a key feature of the toolkit that leads to fast simulation speeds.
Download EGSnrc for free, submit bug reports, and contribute pull requests on a group GitHub page.
[10] EGSnrc is distributed with a wide range of applications that utilize the radiation transport physics to calculate specific quantities.