|Message: Re: Scoring e- without scoring backscattered||Not Logged In (login)|
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> I am thus wondering, what does the "depth" parameter stand for ?
This refers to the hierarchy of touchables, not a length.
> how can I > count beta particles that goes through a volume without counting > backscattered electron ?
You could use a G4PSFlatSurfaceCurrent at the back edge of the geometry. The geometry of the flat surface is one side of a G4Box, which is different from your cylinder. If you need a circular scorer you could modify G4PSCylinderSurfaceCurrent (which uses the inside surface of a cylinder) to use the end of the cylinder.
Also note that $G4INSTALL/examples/extended/electromagnetic/TestEm5 is useful for transmission studies.
A third approach would be to write a UserSteppingAction to check if the particle is on the back surface of the cylinder.