|Message: G4 vs FLUKA at MeV energies||Not Logged In (login)|
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Dear Geant4 users,
I'm trying to compare a Geant4 simulation with a FLUKA one. In both codes, the geometry is a cube of either Graphite, Stainless Steel or Tungsten into which a monoenergetic pencil beam of electrons is sent. The beam energy is either 5 MeV, 50 MeV or 200 MeV.
The results show that the higher the energy and the Z of the material the more the two codes tend to disagree. The worst case is 200 MeV e- into a Tungsten bloc.
I've attached a .pdf with the energy deposition profiles in the target (G4 is the blue curve that tends to spread out more transversely) as well as the physics list. I can't figure out what is the source of the problem. Any ideas?
Best regards, Daniel
Attachment: http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2010/03/02/22.52-96440-pg_0009.pdf http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2010/03/02/22.52-40197-G4vsFlukaPhysicsList.cc
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