const Float_t GetEnvelop(Int_t index) const { return fEnvelop[index] ; }
const Float_t GetShellThickness() const { return fShellThickness ; }
const Float_t GetZLength() const { return fZLength ; }
-
+ const Float_t GetGap2Active() const {return fGap2Active ; }
// material
const Float_t GetAmat() const { return fAmat ; }
const Float_t GetZmat() const { return fZmat ; }
Float_t fIPDistance ; // Distance of the inner surface to the interaction point
Float_t fShellThickness ; // Total thickness in (x,y) direction
Float_t fZLength ; // Total length in z direction
+ Float_t fGap2Active ; // Gap between the envelop and the active material
//material
Float_t fAmat ; // average atomic weight of the active material