Created attachment 824 [details] PurgMagPhysicsList.cc file with the part of the code containing the lines that once commented make the simulation stops after few hundreds of events The Geant4 application I use was created from the example/advanced/Purging_Magnet. Within my PurgMagPhysicsList.cc i use the G4EmPenelopePhysics and enable the following processes: - for gammas: G4GammaConversion, G4ComptonScattering, G4PhotoElectricEffect - for electrons: G4eBremsstrahlung, G4eIonisation, G4eMultipleScattering - for positrons: G4eBremsstrahlung, G4eIonisation, G4eMultipleScattering, G4eplusAnnihilation. when all of them are enabled, the computer correctly performs simulations in multithread mode (3 threads) for millions of initially injected particles. When I comment on the two lines of code enabling G4eIonisation for electrons and positrons, the simulation stops after a few tens of events, without giving an error message. What am I doing wrong if my aim is to assess the impact of a single process on the simulation (and thus if what I want is to enable/disable individual processes correctly) ?
Hello. Making changes in a physics list which disable key processes is a challenging endeavour. Please look at the examples in examples/extended/electromagnetic and in particular TestEm1 which demonstrates how to deactivate some processes in order to understand their effects.
