Yes. You can get the full coordinate location from the G4Step at the interaction, or you can get the “vertex position” of the secondary track (G4Track::GetVertexPosition()), which tells you where it was produced.
Yes. You can get the full coordinate location from the G4Step at the interaction, or you can get the “vertex position” of the secondary track (G4Track::GetVertexPosition()), which tells you where it was produced.