Gabriele added some extra debugging/warning statements in G4Navigator::GetGlobalExitNormal: http://www-geant4.kek.jp/lxr/source/geometry/navigation/History#L40 in November of last year. Since then, I am getting these warnings at every intersection of a neutron with a boundary, see: http://www-geant4.kek.jp/lxr/source/examples/extended/exoticphysics/ucn/ExUCN.out#L85 I have traced this to the fact that fExitNormalGlobalFrame = (0,0,0) in G4Navigator.cc There are two calls to G4Navigator::GetGlobalExitNormal in succession; first from GetLastSurfaceNormal and then from G4UCNBoundaryProcess. If the gravity field is turn off in the example, the first call does not happen. It is for this reason that the next time GetGlobalExitNormal is called from G4UCNBoundaryProcess, the fCalculatedExitNormal it true and hence the warnings.
Created attachment 347 [details] Results summary More input from Tatsuya Kikawa: On 01 Jun 2015, at 10:02, Tatsuya KIKAWA <kikawa@triumf.ca> wrote: Dear Peter and John, I have a question about G4UCN. I'm trying to develop the UCN simulation code based on ExUCN developed by Peter. Current codes are put on https://github.com/tkikawa/ucn_g4 I'm trying to use magnetic, electric, gravity, and gradient B fields and spin tracking simultaneously by using G4RepleteEofM. But when all of them are active, it takes huge amount of time for the simulation (~30min for 1 UCN simulation). When only magnetic, electric fields are active, the simulation works smoothly. When only gravity field is active, it also works smoothly. When only magnetic, electric, gravity fields are active, it also works smoothly. But when only magnetic, electric, and gradient B fields and spin tracking are active, attached error message is displayed and the simulation stops. Such a message is not displayed when all of magnetic, electric, gravity, and gradient B field and spin tracking are active. Similar problem seems to have been reported before. http://hypernews.slac.stanford.edu/HyperNews/geant4/get/emfields/205.html?inline=-1 These results are summarized in the attached figure. I'm using geant4.10.01.p01 on 64bit Linux. If you have any idea about this problem, could you let me know? Best regards, Tatsuya ---- G4MagIntegratorDriver::OneGoodStep: Stepsize underflow in Stepper Step's start x=0.259321 and end x= 0.259321 are equal !! Due to step-size= 1.2966e-17 . Note that input step was 1.2966 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 0 h= 0.05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 1 h= 0.005 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 2 h= 0.0005 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 3 h= 5e-05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 4 h= 5e-06 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 5 h= 5e-07 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 6 h= 5e-08 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 7 h= 5e-09 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 8 h= 5e-10 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 9 h= 5e-11 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 10 h= 5e-12 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 11 h= 5e-13 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 12 h= 5e-14 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 13 h= 5e-15 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 14 h= 5e-16 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 15 h= 5e-17 G4MagIntegratorDriver::OneGoodStep: Stepsize underflow in Stepper Step's start x=0.269321 and end x= 0.269321 are equal !! Due to step-size= 5e-18 . Note that input step was 0.05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 0 h= 0.05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 1 h= 0.005 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 2 h= 0.0005 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 3 h= 5e-05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 4 h= 5e-06 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 5 h= 5e-07 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 6 h= 5e-08 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 7 h= 5e-09 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 8 h= 5e-10 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 9 h= 5e-11 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 10 h= 5e-12 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 11 h= 5e-13 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 12 h= 5e-14 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 13 h= 5e-15 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 14 h= 5e-16 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 15 h= 5e-17 G4MagIntegratorDriver::OneGoodStep: Stepsize underflow in Stepper Step's start x=0.279321 and end x= 0.279321 are equal !! Due to step-size= 5e-18 . Note that input step was 0.05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 0 h= 0.05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 1 h= 0.005 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 2 h= 0.0005 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 3 h= 5e-05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 4 h= 5e-06 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 5 h= 5e-07 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 6 h= 5e-08 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 7 h= 5e-09 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 8 h= 5e-10 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 9 h= 5e-11 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 10 h= 5e-12 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 11 h= 5e-13 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 12 h= 5e-14 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 13 h= 5e-15 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 14 h= 5e-16 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 15 h= 5e-17 G4MagIntegratorDriver::OneGoodStep: Stepsize underflow in Stepper Step's start x=0.289321 and end x= 0.289321 are equal !! Due to step-size= 5e-18 . Note that input step was 0.05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 0 h= 0.05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 1 h= 0.005 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 2 h= 0.0005 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 3 h= 5e-05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 4 h= 5e-06 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 5 h= 5e-07 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 6 h= 5e-08 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 7 h= 5e-09 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 8 h= 5e-10 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 9 h= 5e-11 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 10 h= 5e-12 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 11 h= 5e-13 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 12 h= 5e-14 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 13 h= 5e-15 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 14 h= 5e-16 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 15 h= 5e-17 G4MagIntegratorDriver::OneGoodStep: Stepsize underflow in Stepper Step's start x=0.299321 and end x= 0.299321 are equal !! Due to step-size= 5e-18 . Note that input step was 0.05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 0 h= 0.05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 1 h= 0.005 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 2 h= 0.0005 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 3 h= 5e-05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 4 h= 5e-06 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 5 h= 5e-07 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 6 h= 5e-08 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 7 h= 5e-09 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 8 h= 5e-10 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 9 h= 5e-11 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 10 h= 5e-12 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 11 h= 5e-13 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 12 h= 5e-14 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 13 h= 5e-15 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 14 h= 5e-16 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 15 h= 5e-17 G4MagIntegratorDriver::OneGoodStep: Stepsize underflow in Stepper Step's start x=0.309321 and end x= 0.309321 are equal !! Due to step-size= 5e-18 . Note that input step was 0.05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 0 h= 0.05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 1 h= 0.005 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 2 h= 0.0005 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 3 h= 5e-05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 4 h= 5e-06 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 5 h= 5e-07 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 6 h= 5e-08 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 7 h= 5e-09 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 8 h= 5e-10 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 9 h= 5e-11 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 10 h= 5e-12 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 11 h= 5e-13 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 12 h= 5e-14 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 13 h= 5e-15 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 14 h= 5e-16 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 15 h= 5e-17 G4MagIntegratorDriver::OneGoodStep: Stepsize underflow in Stepper Step's start x=0.319321 and end x= 0.319321 are equal !! Due to step-size= 5e-18 . Note that input step was 0.05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 0 h= 0.05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 1 h= 0.005 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 2 h= 0.0005 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 3 h= 5e-05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 4 h= 5e-06 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 5 h= 5e-07 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 6 h= 5e-08 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 7 h= 5e-09 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 8 h= 5e-10 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 9 h= 5e-11 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 10 h= 5e-12 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 11 h= 5e-13 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 12 h= 5e-14 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 13 h= 5e-15 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 14 h= 5e-16 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 15 h= 5e-17 G4MagIntegratorDriver::OneGoodStep: Stepsize underflow in Stepper Step's start x=0.329321 and end x= 0.329321 are equal !! Due to step-size= 5e-18 . Note that input step was 0.05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 0 h= 0.05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 1 h= 0.005 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 2 h= 0.0005 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 3 h= 5e-05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 4 h= 5e-06 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 5 h= 5e-07 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 6 h= 5e-08 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 7 h= 5e-09 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 8 h= 5e-10 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 9 h= 5e-11 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 10 h= 5e-12 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 11 h= 5e-13 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 12 h= 5e-14 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 13 h= 5e-15 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 14 h= 5e-16 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 15 h= 5e-17 G4MagIntegratorDriver::OneGoodStep: Stepsize underflow in Stepper Step's start x=0.339321 and end x= 0.339321 are equal !! Due to step-size= 5e-18 . Note that input step was 0.05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 0 h= 0.05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 1 h= 0.005 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 2 h= 0.0005 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 3 h= 5e-05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 4 h= 5e-06 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 5 h= 5e-07 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 6 h= 5e-08 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 7 h= 5e-09 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 8 h= 5e-10 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 9 h= 5e-11 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 10 h= 5e-12 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 11 h= 5e-13 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 12 h= 5e-14 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 13 h= 5e-15 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 14 h= 5e-16 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 15 h= 5e-17 G4MagIntegratorDriver::OneGoodStep: Stepsize underflow in Stepper Step's start x=0.349321 and end x= 0.349321 are equal !! Due to step-size= 5e-18 . Note that input step was 0.05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 0 h= 0.05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 1 h= 0.005 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 2 h= 0.0005 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 3 h= 5e-05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 4 h= 5e-06 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 5 h= 5e-07 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 6 h= 5e-08 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 7 h= 5e-09 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 8 h= 5e-10 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 9 h= 5e-11 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 10 h= 5e-12 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 11 h= 5e-13 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 12 h= 5e-14 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 13 h= 5e-15 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 14 h= 5e-16 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 15 h= 5e-17 G4MagIntegratorDriver::OneGoodStep: Stepsize underflow in Stepper Step's start x=0.359321 and end x= 0.359321 are equal !! Due to step-size= 5e-18 . Note that input step was 0.05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 0 h= 0.05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 1 h= 0.005 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 2 h= 0.0005 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 3 h= 5e-05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 4 h= 5e-06 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 5 h= 5e-07 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 6 h= 5e-08 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 7 h= 5e-09 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 8 h= 5e-10 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 9 h= 5e-11 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 10 h= 5e-12 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 11 h= 5e-13 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 12 h= 5e-14 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 13 h= 5e-15 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 14 h= 5e-16 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 15 h= 5e-17 G4MagIntegratorDriver::OneGoodStep: Stepsize underflow in Stepper Step's start x=0.369321 and end x= 0.369321 are equal !! Due to step-size= 5e-18 . Note that input step was 0.05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 0 h= 0.05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 1 h= 0.005 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 2 h= 0.0005 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 3 h= 5e-05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 4 h= 5e-06 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 5 h= 5e-07 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 6 h= 5e-08 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 7 h= 5e-09 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 8 h= 5e-10 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 9 h= 5e-11 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 10 h= 5e-12 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 11 h= 5e-13 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 12 h= 5e-14 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 13 h= 5e-15 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 14 h= 5e-16 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 15 h= 5e-17 G4MagIntegratorDriver::OneGoodStep: Stepsize underflow in Stepper Step's start x=0.379321 and end x= 0.379321 are equal !! Due to step-size= 5e-18 . Note that input step was 0.05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 0 h= 0.05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 1 h= 0.005 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 2 h= 0.0005 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 3 h= 5e-05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 4 h= 5e-06 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 5 h= 5e-07 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 6 h= 5e-08 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 7 h= 5e-09 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 8 h= 5e-10 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 9 h= 5e-11 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 10 h= 5e-12 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 11 h= 5e-13 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 12 h= 5e-14 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 13 h= 5e-15 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 14 h= 5e-16 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 15 h= 5e-17 G4MagIntegratorDriver::OneGoodStep: Stepsize underflow in Stepper Step's start x=0.389321 and end x= 0.389321 are equal !! Due to step-size= 5e-18 . Note that input step was 0.05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 0 h= 0.05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 1 h= 0.005 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 2 h= 0.0005 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 3 h= 5e-05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 4 h= 5e-06 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 5 h= 5e-07 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 6 h= 5e-08 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 7 h= 5e-09 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 8 h= 5e-10 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 9 h= 5e-11 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 10 h= 5e-12 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 11 h= 5e-13 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 12 h= 5e-14 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 13 h= 5e-15 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 14 h= 5e-16 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 15 h= 5e-17 G4MagIntegratorDriver::OneGoodStep: Stepsize underflow in Stepper Step's start x=0.399321 and end x= 0.399321 are equal !! Due to step-size= 5e-18 . Note that input step was 0.05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 0 h= 0.05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 1 h= 0.005 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 2 h= 0.0005 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 3 h= 5e-05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 4 h= 5e-06 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 5 h= 5e-07 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 6 h= 5e-08 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 7 h= 5e-09 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 8 h= 5e-10 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 9 h= 5e-11 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 10 h= 5e-12 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 11 h= 5e-13 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 12 h= 5e-14 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 13 h= 5e-15 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 14 h= 5e-16 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 15 h= 5e-17 G4MagIntegratorDriver::OneGoodStep: Stepsize underflow in Stepper Step's start x=0.409321 and end x= 0.409321 are equal !! Due to step-size= 5e-18 . Note that input step was 0.05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 0 h= 0.05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 1 h= 0.005 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 2 h= 0.0005 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 3 h= 5e-05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 4 h= 5e-06 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 5 h= 5e-07 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 6 h= 5e-08 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 7 h= 5e-09 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 8 h= 5e-10 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 9 h= 5e-11 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 10 h= 5e-12 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 11 h= 5e-13 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 12 h= 5e-14 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 13 h= 5e-15 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 14 h= 5e-16 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 15 h= 5e-17 G4MagIntegratorDriver::OneGoodStep: Stepsize underflow in Stepper Step's start x=0.419321 and end x= 0.419321 are equal !! Due to step-size= 5e-18 . Note that input step was 0.05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 0 h= 0.05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 1 h= 0.005 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 2 h= 0.0005 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 3 h= 5e-05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 4 h= 5e-06 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 5 h= 5e-07 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 6 h= 5e-08 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 7 h= 5e-09 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 8 h= 5e-10 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 9 h= 5e-11 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 10 h= 5e-12 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 11 h= 5e-13 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 12 h= 5e-14 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 13 h= 5e-15 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 14 h= 5e-16 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 15 h= 5e-17 G4MagIntegratorDriver::OneGoodStep: Stepsize underflow in Stepper Step's start x=0.429321 and end x= 0.429321 are equal !! Due to step-size= 5e-18 . Note that input step was 0.05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 0 h= 0.05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 1 h= 0.005 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 2 h= 0.0005 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 3 h= 5e-05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 4 h= 5e-06 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 5 h= 5e-07 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 6 h= 5e-08 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 7 h= 5e-09 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 8 h= 5e-10 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 9 h= 5e-11 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 10 h= 5e-12 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 11 h= 5e-13 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 12 h= 5e-14 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 13 h= 5e-15 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 14 h= 5e-16 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 15 h= 5e-17 G4MagIntegratorDriver::OneGoodStep: Stepsize underflow in Stepper Step's start x=0.439321 and end x= 0.439321 are equal !! Due to step-size= 5e-18 . Note that input step was 0.05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 0 h= 0.05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 1 h= 0.005 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 2 h= 0.0005 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 3 h= 5e-05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 4 h= 5e-06 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 5 h= 5e-07 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 6 h= 5e-08 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 7 h= 5e-09 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 8 h= 5e-10 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 9 h= 5e-11 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 10 h= 5e-12 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 11 h= 5e-13 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 12 h= 5e-14 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 13 h= 5e-15 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 14 h= 5e-16 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 15 h= 5e-17 G4MagIntegratorDriver::OneGoodStep: Stepsize underflow in Stepper Step's start x=0.449321 and end x= 0.449321 are equal !! Due to step-size= 5e-18 . Note that input step was 0.05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 0 h= 0.05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 1 h= 0.005 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 2 h= 0.0005 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 3 h= 5e-05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 4 h= 5e-06 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 5 h= 5e-07 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 6 h= 5e-08 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 7 h= 5e-09 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 8 h= 5e-10 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 9 h= 5e-11 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 10 h= 5e-12 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 11 h= 5e-13 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 12 h= 5e-14 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 13 h= 5e-15 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 14 h= 5e-16 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 15 h= 5e-17 G4MagIntegratorDriver::OneGoodStep: Stepsize underflow in Stepper Step's start x=0.459321 and end x= 0.459321 are equal !! Due to step-size= 5e-18 . Note that input step was 0.05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 0 h= 0.05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 1 h= 0.005 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 2 h= 0.0005 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 3 h= 5e-05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 4 h= 5e-06 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 5 h= 5e-07 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 6 h= 5e-08 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 7 h= 5e-09 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 8 h= 5e-10 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 9 h= 5e-11 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 10 h= 5e-12 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 11 h= 5e-13 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 12 h= 5e-14 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 13 h= 5e-15 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 14 h= 5e-16 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 15 h= 5e-17 G4MagIntegratorDriver::OneGoodStep: Stepsize underflow in Stepper Step's start x=0.469321 and end x= 0.469321 are equal !! Due to step-size= 5e-18 . Note that input step was 0.05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 0 h= 0.05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 1 h= 0.005 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 2 h= 0.0005 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 3 h= 5e-05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 4 h= 5e-06 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 5 h= 5e-07 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 6 h= 5e-08 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 7 h= 5e-09 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 8 h= 5e-10 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 9 h= 5e-11 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 10 h= 5e-12 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 11 h= 5e-13 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 12 h= 5e-14 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 13 h= 5e-15 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 14 h= 5e-16 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 15 h= 5e-17 G4MagIntegratorDriver::OneGoodStep: Stepsize underflow in Stepper Step's start x=0.479321 and end x= 0.479321 are equal !! Due to step-size= 5e-18 . Note that input step was 0.05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 0 h= 0.05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 1 h= 0.005 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 2 h= 0.0005 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 3 h= 5e-05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 4 h= 5e-06 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 5 h= 5e-07 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 6 h= 5e-08 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 7 h= 5e-09 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 8 h= 5e-10 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 9 h= 5e-11 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 10 h= 5e-12 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 11 h= 5e-13 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 12 h= 5e-14 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 13 h= 5e-15 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 14 h= 5e-16 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 15 h= 5e-17 G4MagIntegratorDriver::OneGoodStep: Stepsize underflow in Stepper Step's start x=0.489321 and end x= 0.489321 are equal !! Due to step-size= 5e-18 . Note that input step was 0.05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 0 h= 0.05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 1 h= 0.005 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 2 h= 0.0005 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 3 h= 5e-05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 4 h= 5e-06 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 5 h= 5e-07 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 6 h= 5e-08 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 7 h= 5e-09 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 8 h= 5e-10 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 9 h= 5e-11 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 10 h= 5e-12 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 11 h= 5e-13 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 12 h= 5e-14 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 13 h= 5e-15 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 14 h= 5e-16 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 15 h= 5e-17 G4MagIntegratorDriver::OneGoodStep: Stepsize underflow in Stepper Step's start x=0.499321 and end x= 0.499321 are equal !! Due to step-size= 5e-18 . Note that input step was 0.05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 0 h= 0.05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 1 h= 0.005 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 2 h= 0.0005 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 3 h= 5e-05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 4 h= 5e-06 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 5 h= 5e-07 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 6 h= 5e-08 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 7 h= 5e-09 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 8 h= 5e-10 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 9 h= 5e-11 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 10 h= 5e-12 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 11 h= 5e-13 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 12 h= 5e-14 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 13 h= 5e-15 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 14 h= 5e-16 G4MagIntegratorDriver::OneGoodStep: Stepsize underflow in Stepper Step's start x=0.509321 and end x= 0.509321 are equal !! Due to step-size= 5e-17 . Note that input step was 0.05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 0 h= 0.05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 1 h= 0.005 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 2 h= 0.0005 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 3 h= 5e-05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 4 h= 5e-06 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 5 h= 5e-07 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 6 h= 5e-08 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 7 h= 5e-09 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 8 h= 5e-10 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 9 h= 5e-11 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 10 h= 5e-12 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 11 h= 5e-13 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 12 h= 5e-14 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 13 h= 5e-15 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 14 h= 5e-16 G4MagIntegratorDriver::OneGoodStep: Stepsize underflow in Stepper Step's start x=0.519321 and end x= 0.519321 are equal !! Due to step-size= 5e-17 . Note that input step was 0.05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 0 h= 0.05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 1 h= 0.005 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 2 h= 0.0005 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 3 h= 5e-05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 4 h= 5e-06 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 5 h= 5e-07 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 6 h= 5e-08 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 7 h= 5e-09 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 8 h= 5e-10 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 9 h= 5e-11 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 10 h= 5e-12 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 11 h= 5e-13 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 12 h= 5e-14 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 13 h= 5e-15 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 14 h= 5e-16 G4MagIntegratorDriver::OneGoodStep: Stepsize underflow in Stepper Step's start x=0.529321 and end x= 0.529321 are equal !! Due to step-size= 5e-17 . Note that input step was 0.05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 0 h= 0.05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 1 h= 0.005 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 2 h= 0.0005 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 3 h= 5e-05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 4 h= 5e-06 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 5 h= 5e-07 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 6 h= 5e-08 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 7 h= 5e-09 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 8 h= 5e-10 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 9 h= 5e-11 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 10 h= 5e-12 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 11 h= 5e-13 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 12 h= 5e-14 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 13 h= 5e-15 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 14 h= 5e-16 G4MagIntegratorDriver::OneGoodStep: Stepsize underflow in Stepper Step's start x=0.539321 and end x= 0.539321 are equal !! Due to step-size= 5e-17 . Note that input step was 0.05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 0 h= 0.05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 1 h= 0.005 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 2 h= 0.0005 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 3 h= 5e-05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 4 h= 5e-06 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 5 h= 5e-07 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 6 h= 5e-08 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 7 h= 5e-09 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 8 h= 5e-10 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 9 h= 5e-11 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 10 h= 5e-12 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 11 h= 5e-13 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 12 h= 5e-14 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 13 h= 5e-15 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 14 h= 5e-16 G4MagIntegratorDriver::OneGoodStep: Stepsize underflow in Stepper Step's start x=0.549321 and end x= 0.549321 are equal !! Due to step-size= 5e-17 . Note that input step was 0.05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 0 h= 0.05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 1 h= 0.005 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 2 h= 0.0005 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 3 h= 5e-05 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 4 h= 5e-06 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 5 h= 5e-07 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 6 h= 5e-08 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 7 h= 5e-09 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 8 h= 5e-10 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 9 h= 5e-11 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 10 h= 5e-12 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 11 h= 5e-13 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 12 h= 5e-14 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 13 h= 5e-15 ** G4MagIntegrationDriver: found case of zero momentum. iteration= 14 h= 5e-16 G4MagIntegratorDriver::OneGoodStep: Stepsize underflow in Stepper Step's start x=0.559321 and end x= 0.559321 are equal !! Due to step-size= 5e-17 . Note that input step was 0.05
The problem is now fixed in tag "geomnav-V10-02-09" and the fix will be included in future releases and patches. Thanks for the investigation work you've done, Peter!
