|Message: Detecting the particle leaving a volume||Not Logged In (login)|
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Hi, as written in the FAQ exemple, one may detect that a particle is entering or leaving a volume, in a UserSteppingAction derived class, with something like :
G4StepPoint* point2 = step->GetPreStepPoint(); if (point1->GetStepStatus() == fGeomBoundary)
G4StepPoint* point2 = step->GetPostStepPoint(); if (point2->GetStepStatus() == fGeomBoundary)
But, although the first case sems to work for every case, it appears for me that the volume leaving is rarely detected with this method (about 9 time for 1000 events).
So my question is, how to detect ALL the volume leaving of particle ? Note that in my geometry, I have array of boxes with adjacent edges, but I also tried it with small distance between boxes and it doesn't seem to solve my problem.
I'm using GEANT4.8.1 patch 02
Thanks in advance
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