EGSnrc

The EGSnrc system is a package for the Monte Carlo simulation of coupled electron-photon transport. Its current energy range of applicability is considered to be 1 keV to 10 GeV. The EGS acronym stands for Electron Gamma Shower, and EGSnrc is an extended and improved version of the EGS4 package originally developed at Stanford Linear Accelerator Center (SLAC). In particular, it incorporates significant improvements in the implementation of the condensed history technique for the simulation of charged particle transport and better low energy cross sections.

For more details about the software you should read the EGSnrc documentation. The EGSnrc system has been described extensively in the literature and many of NRC's papers about EGS and EGSnrc are available under Publications. There are many papers written by others who have used the EGSnrc or EGS system and these are included in a list of EGS related papers (last updated in 2005).

Unlike earlier versions of EGSnrc (version 1 to version 3) and the original EGS4 package, which only work on Unix and Linux systems, the current version of EGSnrc works on Unix, Linux, Windows and, to some extent, on Mac OS X.

You may also want to visit the EGS web page from KEK (Japan) for information on EGS4, EGS5, and other EGS related news. For additional background information, you can also check out EGS in the Virtual Visitor Center at SLAC.