31 #ifndef SteppingAction_h    32 #define SteppingAction_h 1 G4LogicalVolume * lvol_module
 
void UserSteppingAction(const G4Step *)
 
G4LogicalVolume * lvol_world
 
G4double BirksAttenuation(const G4Step *)
 
G4LogicalVolume * lvol_layer
 
G4LogicalVolume * lvol_fiber
 
Detector construction class to define materials and geometry. 
 
DetectorConstruction * detector