EGS (Electron Gamma Shower)

Description: The EGS computer code system is a general purpose package for the Monte Carlo simulation of the coupled transport of electrons and photons in an arbitrary geometry for particles with energies from a few keV up to several TeV. Some have referred to the EGS code as the de facto gold standard for clinical radiation dosimetry.


Official Website: Link 1 & Link 2 (@ KEK)

Source Code:

  1. Link 1 (EGS5)
  2. Link 2 (Standard distribution),
  3. Link 3 (Low-energy EGS4 extensions)
  4. Link 4 NRC’s extension of EGS4
  5. Link 5 (EGSnrc’s GitHub)
  6. Link 6 (EGS4 Primer)



  1. Link 1 (User’s Manual)
  2. Link 2  (EGS5) &
  3. Link 3 (educational for radiation physics via EGS)


Reference Articles: Link 1 & Link 2



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