Validation of Geant4 Electromagnetic packages is based on Geant4 extended electromagnetic and medical examples. Validation is performed versus published data and/or between Geant4 versions. The list of dedicated tests for standard electromagnetic physics is shown below.

Stopped anti-proton

• Pion detected

  Reference	Incident energies	Targets	Measured quantities	Data file written?	Comments
  C.Amsler and F.Myher, Ann. Rev. Nucl. Part. Sci. 41, 219 (1991);

Electromagnetic interactions of photons and charged particles with matter are implemented in two electromagnetic packages. The Standard EM package is tailored for applications where secondaries only above 1KeV are important. For applications where lower energy secondaries, below 1KeV, and additional effects, such as atomic relaxation and shell effects, are important, the Low Energy EM package is provided.

• Stopping powers
• Ranges
• Ionization in thin layers
• Multiple scattering
• Dose profile
• Backscattering
• Transmission
• Fano cavity
• Bremsstrahlung
• Synchrotron radiation

System testing of Geant4 Electromagnetic packages mainly based on Geant4 novice and extended electromagnetic examples. Additionally standard electromagnetic physics is tested indirectly in many other nightly tests. The list of dedicated tests for standard electromagnetic physics is shown below.