- TObjArray* fEnvelopes; ///< \brief the envelopes names and transformations
- /// wrt to the chamber position in mother volume
- AliMUONGeometryStore* fDetElements; ///< \brief detection elements
- /// used for alignement of enevelopes
+ TObjArray* fEnvelopes; ///< \brief the envelopes names and transformations
+ /// wrt to the chamber position in mother volume
+ AliMpExMap* fDetElements; ///< \brief detection elements
+ /// used for alignement of envelopes