One module of Tile calorimeter in ATLAS has 307 trapezoid periods if I put all 307 periods one by one using Placement - program works and if I put 307 periods using Replica and send any particle along replica axis - particle never exits from the module If I put 300 periods instead of 307 and use replica, I get G4SmartVoxelHeader::BuildReplicaVoxels probable error in replicated geometry, logical volume TileModule_log *** G4Exception: Aborting execution *** The program was tested on atlinux5 with geant4.1.0 and on private RedHat6.1 with geant4.1.1 The program is in /afs/cern.ch/user/t/tilecal/geant4/tileTB in order to produce the output given below one needs to do: cd /afs/cern.ch/user/t/tilecal/geant4 . G4setup export TileTB_Nperiods=307 export TileTB_Period=replica tileTB run/macro/nu_z.mac ********************************************************************************************************* * G4Track Information: Particle = nu_mu, Track ID = 1, Parent ID = 0 ********************************************************************************************************* Step# X(mm) Y(mm) Z(mm) KinE(MeV) dE(MeV) StepLeng TrackLeng NextVolume ProcName 0 2.5e+03 0 2.7e+03 29.8 0 0 0 Scintillator 1 initStep 1 2.5e+03 0 2.7e+03 29.8 0 2.11 2.11 Absorber Elements Transportation 2 2.5e+03 0 2.71e+03 29.8 0 6.13 8.24 Scintillator 2 Transportation 3 2.5e+03 0 2.71e+03 29.8 0 3 11.2 Absorber Elements Transportation 4 2.5e+03 0 2.72e+03 29.8 0 6.13 17.4 Scintillator 1 Transportation 5 2.5e+03 0 2.72e+03 29.8 0 3 20.4 Absorber Elements Transportation 6 2.5e+03 0 2.73e+03 29.8 0 6.13 26.5 Scintillator 2 Transportation 7 2.5e+03 0 2.73e+03 29.8 0 3 29.5 Absorber Elements Transportation 8 2.5e+03 0 2.74e+03 29.8 0 6.13 35.6 Scintillator 1 Transportation 9 2.5e+03 0 2.74e+03 29.8 0 3 38.6 Absorber Elements Transportation 10 2.5e+03 0 2.74e+03 29.8 0 6.13 44.8 Scintillator 2 Transportation 11 2.5e+03 0 2.75e+03 29.8 0 3 47.8 Absorber Elements Transportation 12 2.5e+03 0 2.75e+03 29.8 0 6.13 53.9 Scintillator 1 Transportation 13 2.5e+03 0 2.76e+03 29.8 0 3 56.9 Absorber Elements Transportation 14 2.5e+03 0 2.76e+03 29.8 0 6.13 63 Scintillator 2 Transportation 15 2.5e+03 0 2.77e+03 29.8 0 3 66 Absorber Elements Transportation 16 2.5e+03 0 2.77e+03 29.8 0 6.13 72.1 Scintillator 1 Transportation 17 2.5e+03 0 2.78e+03 29.8 0 3 75.1 Absorber Elements Transportation 18 2.5e+03 0 2.78e+03 29.8 0 6.13 81.3 Scintillator 2 Transportation 19 2.5e+03 0 2.78e+03 29.8 0 3 84.3 Absorber Elements Transportation 20 2.5e+03 0 2.79e+03 29.8 0 6.13 90.4 Scintillator 1 Transportation 21 2.5e+03 0 2.79e+03 29.8 0 3 93.4 Absorber Elements Transportation 22 2.5e+03 0 2.8e+03 29.8 0 6.13 99.5 Scintillator 2 Transportation 23 2.5e+03 0 2.8e+03 29.8 0 3 103 Scintillator 2 Transportation 24 2.5e+03 0 2.8e+03 29.8 0 0 103 Scintillator 2 Transportation 25 2.5e+03 0 2.8e+03 29.8 0 0 103 Absorber Elements Transportation 26 2.5e+03 0 2.8e+03 29.8 0 0 103 Absorber Elements Transportation 27 2.5e+03 0 2.8e+03 29.8 0 0 103 Absorber Elements Transportation 28 2.5e+03 0 2.8e+03 29.8 0 0 103 Absorber Elements Transportation 29 2.5e+03 0 2.8e+03 29.8 0 0 103 Absorber Elements Transportation 30 2.5e+03 0 2.8e+03 29.8 0 0 103 Absorber Elements Transportation 31 2.5e+03 0 2.8e+03 29.8 0 0 103 Absorber Elements Transportation 32 2.5e+03 0 2.8e+03 29.8 0 0 103 Absorber Elements Transportation 33 2.5e+03 0 2.8e+03 29.8 0 0 103 Absorber Elements Transportation
This bug-report is a duplicate of problem report #44. The problem has been identified as affecting the navigation in replicas (therefore belonging to geometry/volumes subcategory, not tracking) and is currently under investigation. To temporarly overcome the problem, use normal placements instead. Thanks for having provided a testbed program. *** This bug has been marked as a duplicate of 44 ***
