| Summary: | G4eBremsstrahlung (eBrem) gives different results depending on the order of definition of the elements in a material | ||
|---|---|---|---|
| Product: | Geant4 | Reporter: | silvia <capelli> |
| Component: | physics_lists | Assignee: | Vladimir.Ivantchenko |
| Status: | RESOLVED FIXED | ||
| Severity: | normal | CC: | Vladimir.Ivantchenko |
| Priority: | P5 | ||
| Version: | 9.3 | ||
| Hardware: | Other | ||
| OS: | Linux | ||
Hello, Thanks for the report, Please, send tar file with your application. If you are using TestEm9, please, inform what version of G4 and send your macro-file. Vladimir Hello, The problem is fixed. The fix will be available in the next public version of Geant4 (June 2010). VI |
In the evaluation of the containment efficiency for DBD0nu events in TeO2 crystals I defined the material both as TeO2 and O2Te. I used PhysicsList.cc of examples/extended/electromagnetic/TestEM9 and I have switched between G4EmStandard, G4EmLivermore, G4EmPenelope and PhysListEmStandard. The results I obtain are: PhysListEMStandard TeO2 87.76 +/- 0.13 % O2Te 86.14 +/- 0.13 % G4EmStandard TeO2 87.76 +/- 0.13 % O2Te 86.21 +/- 0.13 % G4Livermore TeO2 88.49 +/- 0.13 % O2Te 88.46 +/- 0.13 % G4Penelope TeO2 88.77 +/- 0.13 % O2Te 88.85 +/- 0.13 % The efficiencies obtained with PhysListEMStandard and G4EmStandard change depending on the order of definition of the elements in the material but if I substitute in PhysListEMStandard the eBrem model (used below 1 GeV) with LowEnBrem (below 1 GeV) I obtain results compatible with G4Livermore: TeO2 88.45 +/- 0.13 % O2Te 88.42 +/- 0.13 % so the problem seems to be in the eBrem model.