]> git.uio.no Git - u/mrichter/AliRoot.git/blobdiff - TRD/AliTRDgeometry.h
next50 trigger mask in AliHLTGlobalEsdConverterComponent
[u/mrichter/AliRoot.git] / TRD / AliTRDgeometry.h
index 0852850276f7ddc5fd90d05f7c7e28c125629b09..e5d06383469a2d098dff3ec9ca14573a080a4776 100644 (file)
 
 #include "AliGeometry.h"
 
-#include "TObjArray.h"
-
-class AliRunLoader;
 class TGeoHMatrix;
 
+class AliTRDpadPlane;
+
 class AliTRDgeometry : public AliGeometry {
 
  public:
 
-          enum { kNplan =   6
-               , kNcham =   5
-               , kNsect =  18
-               , kNdet  = 540 
-               , kNdets =  30 };
+  enum { kNlayer  =   6
+       , kNstack  =   5
+       , kNsector =  18
+       , kNdet    = 540 
+       , kNdets   =  30 };
 
   AliTRDgeometry();
-  AliTRDgeometry(const AliTRDgeometry &g);
   virtual ~AliTRDgeometry();
-  AliTRDgeometry &operator=(const AliTRDgeometry &g);
-
-  virtual void     Init();
-  virtual void     CreateGeometry(Int_t *idtmed);
-  virtual Int_t    IsVersion()                                         { return 1;               }
-  virtual Bool_t   Impact(const TParticle* ) const                     { return kTRUE;           }
-  virtual Bool_t   IsHole(Int_t /*p*/, Int_t /*c*/, Int_t /*s*/) const { return kFALSE;          }
-
-  virtual Bool_t   Local2Global(Int_t d, Double_t *local, Double_t *global) const;
-  virtual Bool_t   Local2Global(Int_t p, Int_t c, Int_t s
-                              , Double_t *local, Double_t *global) const;
-  virtual Bool_t   Global2Local(Int_t mode, Double_t *local, Double_t *global
-                              , Int_t *index) const;
-  virtual Bool_t   Global2Detector(Double_t global[3], Int_t index[3]);
-  virtual Bool_t   Rotate(Int_t d, Double_t *pos, Double_t *rot) const;
-  virtual Bool_t   RotateBack(Int_t d, Double_t *rot, Double_t *pos) const;
-
-          void     GroupChamber(Int_t iplan, Int_t icham, Int_t *idtmed);
-          void     CreateFrame(Int_t *idtmed);
-          void     CreateServices(Int_t *idtmed);
-
-          Bool_t   ReadGeoMatrices();  
-
-          void     SetSMstatus(Int_t sm, Char_t status)                { fSMstatus[sm] = status; }
-
-  static  AliTRDgeometry* GetGeometry(AliRunLoader *runLoader = NULL);
-  
-  static  Int_t    GetDetectorSec(Int_t p, Int_t c);
-  static  Int_t    GetDetector(Int_t p, Int_t c, Int_t s);
-  virtual Int_t    GetPlane(Int_t d)   const;
-  virtual Int_t    GetChamber(Int_t d) const;
-  virtual Int_t    GetSector(Int_t d)  const;
-
-  static Float_t   GetTime0(Int_t p)                                   { return fgkTime0[p];     }
-
-          Char_t   GetSMstatus(Int_t sm) const                         { return fSMstatus[sm];   }
-          Float_t  GetChamberWidth(Int_t p) const                      { return fCwidth[p];      }
-          Float_t  GetChamberLength(Int_t p, Int_t c) const            { return fClength[p][c];  }
-
-  virtual void     GetGlobal(const AliRecPoint*, TVector3&, TMatrixF& ) const { }; 
-  virtual void     GetGlobal(const AliRecPoint*, TVector3& ) const            { };
-  static  Double_t GetAlpha()                                          { return 2.0 
-                                                                           * 3.14159265358979324 
-                                                                           / fgkNsect;           } 
-
-  static  Int_t    Nsect()                                             { return fgkNsect;        }
-  static  Int_t    Nplan()                                             { return fgkNplan;        }
-  static  Int_t    Ncham()                                             { return fgkNcham;        }
-  static  Int_t    Ndet()                                              { return fgkNdet;         }
-
-  static  Float_t  Rmin()                                              { return fgkRmin;         }
-  static  Float_t  Rmax()                                              { return fgkRmax;         }
-  static  Float_t  Zmax1()                                             { return fgkZmax1;        }
-  static  Float_t  Zmax2()                                             { return fgkZmax2;        }
-
-  static  Float_t  Cheight()                                           { return fgkCH;           }
-  static  Float_t  Cspace()                                            { return fgkVspace;       }
-  static  Float_t  CraHght()                                           { return fgkCraH;         }
-  static  Float_t  CdrHght()                                           { return fgkCdrH;         }
-  static  Float_t  CamHght()                                           { return fgkCamH;         }
-  static  Float_t  CroHght()                                           { return fgkCroH;         }
-  static  Float_t  CroWid()                                            { return fgkCroW;         }
-  static  Float_t  MyThick()                                           { return fgkMyThick;      }
-  static  Float_t  DrThick()                                           { return fgkDrThick;      }
-  static  Float_t  AmThick()                                           { return fgkAmThick;      }
-  static  Float_t  DrZpos()                                            { return fgkDrZpos;       }
-  static  Float_t  RpadW()                                             { return fgkRpadW;        }
-  static  Float_t  CpadW()                                             { return fgkCpadW;        }
-
-  static  Float_t  Cwidcha()                                           { return (fgkSwidth2 - fgkSwidth1) 
-                                                                                / fgkSheight 
-                                                                                * (fgkCH + fgkVspace);      }
-
-  TGeoHMatrix     *GetGeoMatrix(Int_t det)                             { return (TGeoHMatrix *) 
-                                                                           fMatrixGeo->At(det);             }
-  TGeoHMatrix     *GetMatrix(Int_t det)                                { return (TGeoHMatrix *) 
-                                                                           fMatrixArray->At(det);           }
-  TGeoHMatrix     *GetCorrectionMatrix(Int_t det)                      { return (TGeoHMatrix *) 
-                                                                           fMatrixCorrectionArray->At(det); }
+
+  virtual void             CreateGeometry(Int_t *idtmed);
+  virtual Int_t            IsVersion()                                            { return 1;               }
+  virtual Bool_t           Impact(const TParticle* ) const                        { return kTRUE;           }
+  virtual Bool_t           IsHole(Int_t la, Int_t st, Int_t se) const;
+  virtual Bool_t           IsOnBoundary(Int_t det, Float_t y, Float_t z, Float_t eps = 0.5) const;
+  virtual Bool_t           RotateBack(Int_t det, const Double_t * const loc, Double_t *glb) const;
+
+          Bool_t           ChamberInGeometry(Int_t det);
+
+          void             AssembleChamber(Int_t ilayer, Int_t istack);
+          void             CreateFrame(Int_t *idtmed);
+          void             CreateServices(Int_t *idtmed);
+
+  static  Bool_t           CreateClusterMatrixArray();  
+  static  TGeoHMatrix     *GetClusterMatrix(Int_t det);
+
+          void             SetSMstatus(Int_t sm, Char_t status)                  { fgSMstatus[sm] = status; }
+
+  static  Int_t            GetDetectorSec(Int_t layer, Int_t stack);
+  static  Int_t            GetDetector(Int_t layer, Int_t stack, Int_t sector);
+  static  Int_t            GetLayer(Int_t det);
+  static  Int_t            GetStack(Int_t det);
+          Int_t            GetStack(Double_t z, Int_t layer);
+  static  Int_t            GetSector(Int_t det);
+
+  static  void             CreatePadPlaneArray();
+  static  AliTRDpadPlane  *CreatePadPlane(Int_t layer, Int_t stack);
+  static  AliTRDpadPlane  *GetPadPlane(Int_t layer, Int_t stack);
+  static  AliTRDpadPlane  *GetPadPlane(Int_t det)                                { return GetPadPlane(GetLayer(det)
+                                                                                                     ,GetStack(det)); }
+  static  Int_t            GetRowMax(Int_t layer, Int_t stack, Int_t /*sector*/);
+  static  Int_t            GetColMax(Int_t layer);
+  static  Double_t         GetRow0(Int_t layer, Int_t stack, Int_t /*sector*/);
+  static  Double_t         GetCol0(Int_t layer);
+
+  static  Float_t          GetTime0(Int_t layer)                                 { return fgkTime0[layer];          }
+
+  static  Double_t         GetXtrdBeg()                                          { return fgkXtrdBeg;               }
+  static  Double_t         GetXtrdEnd()                                          { return fgkXtrdEnd;               }
+
+          Char_t           GetSMstatus(Int_t sm) const                           { return fgSMstatus[sm];           }
+  static  Float_t          GetChamberWidth(Int_t layer)                          { return fgkCwidth[layer]      ;   }
+  static  Float_t          GetChamberLength(Int_t layer, Int_t stack)            { return fgkClength[layer][stack]; }
+
+  virtual void             GetGlobal(const AliRecPoint*, TVector3&, TMatrixF& ) const { }; 
+  virtual void             GetGlobal(const AliRecPoint*, TVector3& ) const            { };
+
+  static  Double_t         GetAlpha()                                            { return 2.0 
+                                                                                        * 3.14159265358979324 
+                                                                                        / fgkNsector;          } 
+
+  static  Int_t            Nsector()                                             { return fgkNsector;       }
+  static  Int_t            Nlayer()                                              { return fgkNlayer;        }
+  static  Int_t            Nstack()                                              { return fgkNstack;        }
+  static  Int_t            Ndet()                                                { return fgkNdet;          }
+
+  static  Float_t          Cheight()                                             { return fgkCH;            }
+  static  Float_t          CheightSV()                                           { return fgkCHsv;          }
+  static  Float_t          Cspace()                                              { return fgkVspace;        }
+  static  Float_t          CraHght()                                             { return fgkCraH;          }
+  static  Float_t          CdrHght()                                             { return fgkCdrH;          }
+  static  Float_t          CamHght()                                             { return fgkCamH;          }
+  static  Float_t          CroHght()                                             { return fgkCroH;          }
+  static  Float_t          CsvHght()                                             { return fgkCsvH;          }
+  static  Float_t          CroWid()                                              { return fgkCroW;          }
+
+  static  Float_t          AnodePos()                                            { return fgkAnodePos;      }
+
+  static  Float_t          MyThick()                                             { return fgkRMyThick;      }
+  static  Float_t          DrThick()                                             { return fgkDrThick;       }
+  static  Float_t          AmThick()                                             { return fgkAmThick;       }
+  static  Float_t          DrZpos()                                              { return fgkDrZpos;        }
+  static  Float_t          RpadW()                                               { return fgkRpadW;         }
+  static  Float_t          CpadW()                                               { return fgkCpadW;         }
+
+  static  Float_t          Cwidcha()                                             { return (fgkSwidth2 - fgkSwidth1) 
+                                                                                        / fgkSheight 
+                                                                                        * (fgkCH + fgkVspace);      }
+
+  static  Int_t            MCMmax()                                              { return fgkMCMmax;        }
+  static  Int_t            MCMrow()                                              { return fgkMCMrow;        }
+  static  Int_t            ROBmaxC0()                                            { return fgkROBmaxC0;      }
+  static  Int_t            ROBmaxC1()                                            { return fgkROBmaxC1;      }
+  static  Int_t            ADCmax()                                              { return fgkADCmax;        }
+  static  Int_t            TBmax()                                               { return fgkTBmax;         }            
+  static  Int_t            Padmax()                                              { return fgkPadmax;        }
+  static  Int_t            Colmax()                                              { return fgkColmax;        }
+  static  Int_t            RowmaxC0()                                            { return fgkRowmaxC0;      }
+  static  Int_t            RowmaxC1()                                            { return fgkRowmaxC1;      }
 
  protected:
-  static const Int_t    fgkNsect;                            //  Number of sectors in the full detector (18)
-  static const Int_t    fgkNplan;                            //  Number of planes of the TRD (6)
-  static const Int_t    fgkNcham;                            //  Number of chambers in z-direction (5)
-  static const Int_t    fgkNdet;                             //  Total number of detectors (18 * 6 * 5 = 540)
-
-  static const Float_t  fgkRmin;                             //  Minimal radius of the TRD
-  static const Float_t  fgkRmax;                             //  Maximal radius of the TRD
-
-  static const Float_t  fgkZmax1;                            //  Half-length of the TRD at outer radius
-  static const Float_t  fgkZmax2;                            //  Half-length of the TRD at inner radius
-
-  static const Float_t  fgkSheight;                          //  Height of the TRD-volume in spaceframe (BTR1-3)
-  static const Float_t  fgkSwidth1;                          //  Lower width of the TRD-volume in spaceframe (BTR1-3)
-  static const Float_t  fgkSwidth2;                          //  Upper width of the TRD-volume in spaceframe (BTR1-3)
-  static const Float_t  fgkSlenTR1;                          //  Length of the TRD-volume in spaceframe (BTR1)
-  static const Float_t  fgkSlenTR2;                          //  Length of the TRD-volume in spaceframe (BTR2)
-  static const Float_t  fgkSlenTR3;                          //  Length of the TRD-volume in spaceframe (BTR3)
-
-  static const Float_t  fgkSMpltT;                           //  Thickness of the super module side plates
-
-  static const Float_t  fgkCraH;                             //  Height of the radiator part of the chambers
-  static const Float_t  fgkCdrH;                             //  Height of the drift region of the chambers
-  static const Float_t  fgkCamH;                             //  Height of the amplification region of the chambers
-  static const Float_t  fgkCroH;                             //  Height of the readout of the chambers
-  static const Float_t  fgkCH;                               //  Total height of the chambers
-
-  static const Float_t  fgkVspace;                           //  Vertical spacing of the chambers
-  static const Float_t  fgkHspace;                           //  Horizontal spacing of the chambers
-  static const Float_t  fgkVrocsm;                           //  Radial distance of the first ROC to the outer SM plates
-  static const Float_t  fgkCalT;                             //  Thickness of the lower aluminum frame
-  static const Float_t  fgkCclsT;                            //  Thickness of the lower G10 frame sides
-  static const Float_t  fgkCclfT;                            //  Thickness of the lower G10 frame front
-  static const Float_t  fgkCcuT;                             //  Thickness of the upper G10 frame
-  static const Float_t  fgkCauT;                             //  Thickness of the upper aluminum frame
-
-  static const Float_t  fgkCroW;                             //  Additional width of the readout chamber frames
-
-  static const Float_t  fgkCpadW;                            //  Difference of outer chamber width and pad plane width
-  static const Float_t  fgkRpadW;                            //  Difference of outer chamber width and pad plane width
-
-  static const Float_t  fgkRaThick;                          //  Thickness of the radiator
-  static const Float_t  fgkMyThick;                          //  Thickness of the mylar-layer
-  static const Float_t  fgkXeThick;                          //  Thickness of the gas volume
-  static const Float_t  fgkDrThick;                          //  Thickness of the drift region
-  static const Float_t  fgkAmThick;                          //  Thickness of the amplification region
-  static const Float_t  fgkCuThick;                          //  Thickness of the pad plane
-  static const Float_t  fgkSuThick;                          //  Thickness of the HEXCEL+G10 support structure
-  static const Float_t  fgkFeThick;                          //  Thickness of the FEE + signal lines
-  static const Float_t  fgkCoThick;                          //  Thickness of the PE of the cooling device
-  static const Float_t  fgkWaThick;                          //  Thickness of the cooling water
-  static const Float_t  fgkRpThick;                          //  Thickness of the PCB readout boards
-  static const Float_t  fgkRcThick;                          //  Thickness of the PCB copper layers
-
-  static const Float_t  fgkRaZpos;                           //  Position of the radiator
-  static const Float_t  fgkMyZpos;                           //  Position of the mylar-layer
-  static const Float_t  fgkDrZpos;                           //  Position of the drift region
-  static const Float_t  fgkAmZpos;                           //  Position of the amplification region
-  static const Float_t  fgkCuZpos;                           //  Position of the pad plane
-  static const Float_t  fgkSuZpos;                           //  Position of the HEXCEL+G10 support structure
-  static const Float_t  fgkFeZpos;                           //  Position of the FEE + signal lines
-  static const Float_t  fgkCoZpos;                           //  Position of the PE of the cooling device
-  static const Float_t  fgkWaZpos;                           //  Position of the cooling water
-  static const Float_t  fgkRpZpos;                           //  Position of the PCB readout boards
-  static const Float_t  fgkRcZpos;                           //  Position of the PCB copper layers
-
-  Char_t                fSMstatus[kNsect];                   //  Super module status byte
-
-  Float_t               fCwidth[kNplan];                     //  Outer widths of the chambers
-  Float_t               fClength[kNplan][kNcham];            //  Outer lengths of the chambers
-
-  Float_t               fRotA11[kNsect];                     //  Matrix elements for the rotation
-  Float_t               fRotA12[kNsect];                     //  Matrix elements for the rotation
-  Float_t               fRotA21[kNsect];                     //  Matrix elements for the rotation
-  Float_t               fRotA22[kNsect];                     //  Matrix elements for the rotation
-
-  Float_t               fRotB11[kNsect];                     //  Matrix elements for the backward rotation
-  Float_t               fRotB12[kNsect];                     //  Matrix elements for the backward rotation
-  Float_t               fRotB21[kNsect];                     //  Matrix elements for the backward rotation
-  Float_t               fRotB22[kNsect];                     //  Matrix elements for the backward rotation
-
-  static const Double_t fgkTime0Base;                        //  Base value for calculation of Time-position of pad 0
-  static const Float_t  fgkTime0[kNplan];                    //  Time-position of pad 0
-  
-  Float_t               fChamberUAorig[3*kNdets][3];         //  Volumes origin in
-  Float_t               fChamberUDorig[3*kNdets][3];         //  the chamber
-  Float_t               fChamberUForig[3*kNdets][3];         //  [3] = x, y, z
-  Float_t               fChamberUUorig[3*kNdets][3];         //
-
-  Float_t               fChamberUAboxd[3*kNdets][3];         //  Volumes box
-  Float_t               fChamberUDboxd[3*kNdets][3];         //  dimensions (half)
-  Float_t               fChamberUFboxd[3*kNdets][3];         //  [3] = x, y, z
-  Float_t               fChamberUUboxd[3*kNdets][3];         // 
-
-  TObjArray *           fMatrixArray;                        //! Transformation Global to Local
-  TObjArray *           fMatrixCorrectionArray;              //! Transformation Cluster to  Tracking systerm
-  TObjArray *           fMatrixGeo;                          //! Geo matrices
-
-  ClassDef(AliTRDgeometry,10)                                //  TRD geometry class
 
-};
+  static const Int_t       fgkNsector;                          //  Number of sectors in the full detector (18)
+  static const Int_t       fgkNlayer;                           //  Number of layers of the TRD (6)
+  static const Int_t       fgkNstack;                           //  Number of stacks in z-direction (5)
+  static const Int_t       fgkNdet;                             //  Total number of detectors (18 * 6 * 5 = 540)
+
+  static const Float_t     fgkTlength;                          //  Length of the TRD-volume in spaceframe (BTRD)
+
+  static const Float_t     fgkSheight;                          //  Height of the supermodule
+  static const Float_t     fgkSwidth1;                          //  Lower width of the supermodule
+  static const Float_t     fgkSwidth2;                          //  Upper width of the supermodule
+  static const Float_t     fgkSlength;                          //  Length of the supermodule
+
+  static const Float_t     fgkFlength;                          //  Length of the service space in front of a supermodule
+
+  static const Float_t     fgkSMpltT;                           //  Thickness of the super module side plates
+
+  static const Float_t     fgkCraH;                             //  Height of the radiator part of the chambers
+  static const Float_t     fgkCdrH;                             //  Height of the drift region of the chambers
+  static const Float_t     fgkCamH;                             //  Height of the amplification region of the chambers
+  static const Float_t     fgkCroH;                             //  Height of the readout of the chambers
+  static const Float_t     fgkCsvH;                             //  Height of the services on top of the chambers
+  static const Float_t     fgkCH;                               //  Total height of the chambers (w/o services)
+  static const Float_t     fgkCHsv;                             //  Total height of the chambers (with services)
+
+  static const Float_t     fgkAnodePos;                         //  Distance of anode wire plane relative to alignabl volume
+
+  static const Float_t     fgkVspace;                           //  Vertical spacing of the chambers
+  static const Float_t     fgkHspace;                           //  Horizontal spacing of the chambers
+  static const Float_t     fgkVrocsm;                           //  Radial distance of the first ROC to the outer SM plates
+
+  static const Float_t     fgkCalT;                             //  Thickness of the lower aluminum frame
+  static const Float_t     fgkCalW;                             //  Width of additional aluminum ledge on lower frame
+  static const Float_t     fgkCalH;                             //  Height of additional aluminum ledge on lower frame
+  static const Float_t     fgkCalWmod;                          //  Width of additional aluminum ledge on lower frame
+  static const Float_t     fgkCalHmod;                          //  Height of additional aluminum ledge on lower frame
+  static const Float_t     fgkCwsW;                             //  Width of additional wacosit ledge on lower frame
+  static const Float_t     fgkCwsH;                             //  Height of additional wacosit ledge on lower frame
+  static const Float_t     fgkCclsT;                            //  Thickness of the lower Wacosit frame sides
+  static const Float_t     fgkCclfT;                            //  Thickness of the lower Wacosit frame front
+  static const Float_t     fgkCglT;                             //  Thichness of the glue around the radiator
+  static const Float_t     fgkCcuTa;                            //  Thickness of the upper Wacosit frame around amp. region
+  static const Float_t     fgkCcuTb;                            //  Thickness of the upper Wacosit frame around amp. region
+  static const Float_t     fgkCauT;                             //  Thickness of the aluminum frame of the back panel
+  static const Float_t     fgkCroW;                             //  Additional width of the readout chamber frames
+
+  static const Float_t     fgkCpadW;                            //  Difference of outer chamber width and pad plane width
+  static const Float_t     fgkRpadW;                            //  Difference of outer chamber width and pad plane width
+
+  static const Float_t     fgkXeThick;                          //  Thickness of the gas volume
+  static const Float_t     fgkDrThick;                          //  Thickness of the drift region
+  static const Float_t     fgkAmThick;                          //  Thickness of the amplification region
+  static const Float_t     fgkWrThick;                          //  Thickness of the wire planes
+
+  static const Float_t     fgkPPdThick;                         //  Thickness of copper of the pad plane
+  static const Float_t     fgkPPpThick;                         //  Thickness of PCB board of the pad plane
+  static const Float_t     fgkPGlThick;                         //  Thickness of the glue layer
+  static const Float_t     fgkPCbThick;                         //  Thickness of the carbon layers
+  static const Float_t     fgkPHcThick;                         //  Thickness of the honeycomb support structure
+  static const Float_t     fgkPPcThick;                         //  Thickness of the PCB readout boards
+  static const Float_t     fgkPRbThick;                         //  Thickness of the PCB copper layers
+  static const Float_t     fgkPElThick;                         //  Thickness of all other electronics components (caps, etc.)
+
+  static const Float_t     fgkRFbThick;                         //  Thickness of the fiber layers in the radiator
+  static const Float_t     fgkRRhThick;                         //  Thickness of the rohacell layers in the radiator
+  static const Float_t     fgkRGlThick;                         //  Thickness of the glue layers in the radiator
+  static const Float_t     fgkRCbThick;                         //  Thickness of the carbon layers in the radiator
+  static const Float_t     fgkRMyThick;                         //  Thickness of the mylar layers in the radiator
+
+  static const Float_t     fgkDrZpos;                           //  Position of the drift region
+  static const Float_t     fgkAmZpos;                           //  Position of the amplification region
+  static const Float_t     fgkWrZposA;                          //  Position of the wire planes
+  static const Float_t     fgkWrZposB;                          //  Position of the wire planes
+  static const Float_t     fgkCalZpos;                          //  Position of the additional aluminum ledges
+
+  static const Int_t       fgkMCMmax;                           //  Maximum number of MCMs per ROB
+  static const Int_t       fgkMCMrow;                           //  Maximum number of MCMs per ROB Row
+  static const Int_t       fgkROBmaxC0;                         //  Maximum number of ROBs per C0 chamber
+  static const Int_t       fgkROBmaxC1;                         //  Maximum number of ROBs per C1 chamber
+  static const Int_t       fgkADCmax;                           //  Maximum number of ADC channels per MCM
+  static const Int_t       fgkTBmax;                            //  Maximum number of Time bins
+  static const Int_t       fgkPadmax;                           //  Maximum number of pads per MCM
+  static const Int_t       fgkColmax;                           //  Maximum number of pads per padplane row
+  static const Int_t       fgkRowmaxC0;                         //  Maximum number of Rows per C0 chamber
+  static const Int_t       fgkRowmaxC1;                         //  Maximum number of Rows per C1 chamber
+
+  static const Float_t     fgkCwidth[kNlayer];                  //  Outer widths of the chambers
+  static const Float_t     fgkClength[kNlayer][kNstack];        //  Outer lengths of the chambers
+
+  static const Double_t    fgkTime0Base;                        //  Base value for calculation of Time-position of pad 0
+  static const Float_t     fgkTime0[kNlayer];                   //  Time-position of pad 0
+
+  static const Double_t    fgkXtrdBeg;                          //  X-coordinate in tracking system of begin of TRD mother volume
+  static const Double_t    fgkXtrdEnd;                          //  X-coordinate in tracking system of end of TRD mother volume
+
+  static       TObjArray  *fgClusterMatrixArray;                //! Transformation matrices loc. cluster to tracking cs
+  static       TObjArray  *fgPadPlaneArray;                     //! Array of pad plane objects
+
+  static       Char_t      fgSMstatus[kNsector];                //  Super module status byte
+
+ private:
+
+  AliTRDgeometry(const AliTRDgeometry &g);                      //  Not implemented
+  AliTRDgeometry &operator=(const AliTRDgeometry &g);           //  Not implemented
+
+  ClassDef(AliTRDgeometry,25)                                   //  TRD geometry class
 
+};
 #endif