]> git.uio.no Git - u/mrichter/AliRoot.git/blobdiff - ITS/AliITSv11GeometrySSD.h
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[u/mrichter/AliRoot.git] / ITS / AliITSv11GeometrySSD.h
index 07c11364fa3966c1942aff647745c3a0de723edc..946a85ee2539bde38aa2868114de556b1b3067ff 100644 (file)
+#ifndef ALIITSV11GEOMETRYSSD_H
+#define ALIITSV11GEOMETRYSSD_H
 //*************************************************************************
 // class AliITSv11GeometrySSD
 // Enrico Cattaruzza                                     ecattar@ts.infn.it
 //*************************************************************************
-#ifndef ALIITSV11GEOMETRYSSD_H
-#define ALIITSV11GEOMETRYSSD_H
+/* Copyright(c) 2007-2009, ALICE Experiment at CERN, All rights reserved. *
+ * See cxx source for full Copyright notice                               */
+/* $Id$ */
 class TGeoVolume;
+class TGeoShape;
 class TGeoCombiTrans;
 class TGeoMedium;
 class TGeoCompositeShape;
+class TGeoMatrix;
 class TVector3;
 class TGeoArb8;
 class TList;
 class TGeoTube;
 class TGeoHMatrix;
-class AliITSv11GeometrySSD{
+class TGeoTranslation;
+class TGeoRotation;
+class TGeoXtru;
+class TGeoVolumeAssembly;
+#include "AliITSv11Geometry.h"
+class AliITSv11GeometrySSD: public AliITSv11Geometry {
 public:
   AliITSv11GeometrySSD();
+  AliITSv11GeometrySSD(const AliITSv11GeometrySSD &source);
+  AliITSv11GeometrySSD& operator=(const AliITSv11GeometrySSD &source);
   virtual ~AliITSv11GeometrySSD(){};
   /////////////////////////////////////////////////////////////////////////
   // Public methods
   /////////////////////////////////////////////////////////////////////////
-  TGeoMedium *GetMedium(char*); // to be interfaced with AliRoot
-  const char*   GetSensitiveVolumeName() const {return fgkSSDSensitiveVolName;};
-  TGeoVolume* GetSSDSensorSupportShape(Double_t,Double_t,Double_t,Double_t*);
-  TGeoVolume* GetSSDSensorSupport(Int_t, Int_t);
-  TGeoVolume* GetSSDSensorSupportAssembly(Int_t);
-  TGeoVolume* GetSSDSensor();
-  TGeoVolume* GetSSDChipAssembly();
-  TGeoVolume* GetSSDChipCables(Double_t,char*);
-  TGeoVolume* GetSSDChipCablesAssembly(Double_t);
-  TGeoVolume* GetSSDStiffenerAssembly();
-  TGeoVolume* GetSSDFlex(Double_t,Double_t);
-  TGeoVolume* GetSSDEndFlex(Double_t,Double_t);
-  TGeoVolume* GetSSDFlexAssembly();
-  TGeoVolume* GetSSDCoolingBlock();
-  TGeoVolume* GetSSDCoolingBlockAssembly();
-  TGeoVolume* GetSSDModule(Int_t);
-  TGeoVolume* GetCarbonFiberJunction(Double_t);
-  TGeoVolume* GetCarbonFiberJunctionAssembly();
-  TList* GetLadderCableSegment(Double_t);
-  TGeoVolume* GetLadderCable(Int_t n,Double_t);
-  TGeoVolume* GetLadderCableAssembly(Int_t n,Double_t);
-  TList* GetLadderCableAssemblyList(Int_t n,Double_t);
-  TList* GetEndLadderCarbonFiberJunctionAssembly();
-  TGeoVolume* GetCarbonFiberSupport();
-  TGeoVolume* GetCarbonFiberLowerSupport(Int_t i=0, Bool_t EndLadder = false);
-  TGeoVolume* GetCarbonFiberAssemblySupport();
-  TGeoVolume* GetCoolingTubeSupport();
-  TGeoVolume* GetCoolingTubeSupportAssembly();
-  TGeoVolume* GetCoolingTube();
-  TGeoVolume* GetCoolingTubeAssembly();
-  TGeoVolume* GetLadderSegment(Int_t);
-  TList* GetEndLadderSegment();
-  TGeoVolume* GetSSDMountingBlock();
-  TGeoVolume* GetLadder(Int_t);
-  TGeoVolume* GetLayer(Int_t);
-  void Layer5(TGeoVolume*);
-  void Layer6(TGeoVolume*);
-  /////////////////////////////////////////////////////////////////////////
-  //Auxiliary methods for shapes building
-  /////////////////////////////////////////////////////////////////////////
-  TVector3* GetReflection(TVector3*,Double_t*);
-  TGeoArb8* GetArbShape(TVector3* [],Double_t*,Double_t,char*,Int_t isign = 1);
-  TGeoArb8* GetTriangleShape(TVector3* [],Double_t,char*);
-  TGeoArb8* GetTrapezoidShape(TVector3* [],Double_t*,Double_t,char*);
-  TGeoCombiTrans* AddTranslationToCombiTrans(TGeoCombiTrans*,Double_t,
-                                                        Double_t,Double_t) const;
-  /////////////////////////////////////////////////////////////////////////
-  //Auxiliary methods for material building
-  /////////////////////////////////////////////////////////////////////////
-  TGeoMedium* AliITSv11GeometrySSD::GetMedium(const char* mediumName);
-  void CreateMaterials();
+  void CreateMaterials();        // Method setting the materials 
+  TGeoMedium* GetMedium(const char* mediumName);   // It returns the Medium
+  const char*   GetSenstiveVolumeName5() const {return fgSSDsensitiveVolName5;};
+  // it returns the Sensitive Volume of Layer 5
+  const char*   GetSenstiveVolumeName6() const {return fgSSDsensitiveVolName6;};
+  // it returns the Sensitive Volume of Layer 6
+  TGeoVolumeAssembly* GetLadderSegment(Int_t i){return fladdersegment[i];}; // Get Ladder Segment
+  TGeoVolumeAssembly* GetEndLadderSegment(Int_t i){return fendladdersegment[i];}; // Get End Ladder Segment 
+  TGeoVolume* GetLadder(Int_t i) {return fladder[i];}; // Get Ladder
+//  TGeoVolumeAssembly* GetLadder(Int_t i) {return fladder[i];}; // Get Ladder
+  TGeoVolumeAssembly* GetLayer(Int_t i)const {return i==5? fSSDLayer5 : fSSDLayer6;}; // Get Layer
+  TGeoVolume** GetEndCapAssembly();     // End Cap Assembly
+  void SetLadderSegment();                             // Set Ladder Elementary Segment 
+  void SetEndLadderSegment();                  // Set End Ladder Segment
+  void SetLadder();                                            // Set Ladder
+  void SetLayer();                                             // Set Layer
+  void SetSSDCone();                    // Set SSD Cone
+  TGeoVolume* SetSSDCables();           // Set SSD Cables
+  void Layer5(TGeoVolume* moth);        // Setting Layer 5 into mother volume
+  void Layer6(TGeoVolume* moth);        // Setting Layer 6 into mother volume
+  void LadderSupportLayer5(TGeoVolume* moth); // Setting Ladder Support of Layer 5
+  void LadderSupportLayer6(TGeoVolume* moth); // Setting Ladder Support of Layer 6
+  void EndCapSupportSystemLayer5(TGeoVolume* moth); // Setting End Cap Support + End Cap Assembly Layer 5
+  void EndCapSupportSystemLayer6(TGeoVolume* moth); // Setting End Cap Support + End Cap Assembly Layer 6
+  void SSDCone(TGeoVolume* moth); // Setting SSD Cone;
+  void SSDCables(TGeoVolume* moth); // Setting SSD Cables;
 private:
+  /////////////////////////////////////////////////////////////////////////////////
+  // Names of the Sensitive Volumes of Layer 5 and Layer 6
+  /////////////////////////////////////////////////////////////////////////////////
+  static const char* fgSSDsensitiveVolName5;       // sens. vol. name for lay. 5
+  static const char* fgSSDsensitiveVolName6;       // sens. vol. name for lay. 6
+  /////////////////////////////////////////////////////////////////////////////////
+  // Variable for Vertical Disalignement of Modules
+  /////////////////////////////////////////////////////////////////////////////////
+  static const Double_t fgkSSDModuleVerticalDisalignment;  // Vertical Disalignement of Volume
+  static const Double_t fgkSSDModuleSideDisalignment;  // Vertical Disalignement of Volume
+  static const Double_t fgkSSDLadderVerticalDisalignment;  // Extra space at ladder support for disalignment
+  static const Double_t fgkSSDTolerance;  // SSD Tolerance
   /////////////////////////////////////////////////////////////////////////
   // Layer5 (lengths are in mm and angles in degrees)
   /////////////////////////////////////////////////////////////////////////
-  static const Double_t fgkSSDLay5LadderLength;
-  static const Int_t fgkSSDLay5SensorsNumber;
-  static const Int_t fgkSSDLay5LadderNumber;
-  static const Double_t fgkSSDLay5RadiusMin;
-  static const Double_t fgkSSDLay5RadiusMax;
-  static const Double_t fgkLay5CenterITSPosition;
+  static const Double_t fgkSSDLay5LadderLength;    // Ladder Layer5 Length
+  static const Int_t fgkSSDLay5SensorsNumber;      // Ladder Layer5 Sensor Number
+  static const Int_t fgkSSDLay5LadderNumber;       // Ladder Layer5 Number
+  static const Double_t fgkSSDLay5RadiusMin;       // Ladder Layer5 Min Radius
+  static const Double_t fgkSSDLay5RadiusMax;       // Ladder Layer5 Max Radius
+  static const Double_t fgkLay5CenterITSPosition;  // ITS center position respect
+                                                   // to Ladder Layer5
   /////////////////////////////////////////////////////////////////////////
   // Layer6 (lengths are in mm and angles in degrees)
   /////////////////////////////////////////////////////////////////////////
-  static const Double_t fgkSSDLay6LadderLength; //It is not used explicitely in the simulation
-  static const Int_t fgkSSDLay6SensorsNumber;
-  static const Int_t fgkSSDLay6LadderNumber;
-  static const Double_t fgkSSDLay6RadiusMin;
-  static const Double_t fgkSSDLay6RadiusMax;
-  static const Double_t fgkLay6CenterITSPosition;
+  static const Double_t fgkSSDLay6LadderLength;    // Ladder Layer6 Length
+  static const Int_t fgkSSDLay6SensorsNumber;      // Ladder Layer6 Sensor Number
+  static const Int_t fgkSSDLay6LadderNumber;       // Ladder Layer6 Number
+  static const Double_t fgkSSDLay6RadiusMin;       // Ladder Layer6 Min Radius
+  static const Double_t fgkSSDLay6RadiusMax;       // Ladder Layer6 Max Radius 
+  static const Double_t fgkLay6CenterITSPosition;  // ITS center position respect
+                                                   // to Ladder Layer6
   /////////////////////////////////////////////////////////////////////////
   // SSD Chips and Hybrid
   /////////////////////////////////////////////////////////////////////////
-  static const Int_t fgkSSDChipNumber;
-  static const Double_t fgkSSDChipLength; 
-  static const Double_t fgkSSDChipWidth;
-  static const Double_t fgkSSDChipHeight;
-  static const Double_t fgkSSDChipSeparationLength;
-  static const Double_t fgkSSDChipGlueLength; 
-  static const Double_t fgkSSDChipGlueWidth; 
-  static const Double_t fgkSSDChipGlueHeight; 
-  TGeoMedium* fgkSSDChipMedium;
-  TGeoMedium* fgkSSDChipGlueMedium;
-  /////////////////////////////////////////////////////////////////////////
-  // Stiffener
-  /////////////////////////////////////////////////////////////////////////
-  static const Double_t fgkSSDStiffenerLength;
-  static const Double_t fgkSSDStiffenerWidth;
-  static const Double_t fgkSSDStiffenerHeight;
-  static const Double_t fgkSSDStiffenerToChipDist;
-  static const Double_t fgkSSDCapacitor0603Length;
-  static const Double_t fgkSSDCapacitor0603Width;
-  static const Double_t fgkSSDCapacitor0603Height;
-  static const Double_t fgkSSDCapacitor1812Length;
-  static const Double_t fgkSSDCapacitor1812Width;
-  static const Double_t fgkSSDCapacitor1812Height;
-  static const Double_t fgkSSDWireLength;
-  static const Double_t fgkSSDWireRadius;
-  static const Double_t fgkSSDConnectorPosition[2];
-  static const Double_t fgkSSDConnectorSeparation;
-  static const Double_t fgkSSDConnectorLength;
-  static const Double_t fgkSSDConnectorWidth;
-  static const Double_t fgkSSDConnectorHeight;
-  TGeoMedium* fgkSSDStiffenerMedium;
-  TGeoMedium* fgkSSDStiffenerConnectorMedium;
-  TGeoMedium* fgkSSDStiffener0603CapacitorMedium;
-  TGeoMedium* fgkSSDStiffener1812CapacitorMedium;
-  TGeoMedium* fgkSSDStiffenerHybridWireMedium;
+  static const Int_t fgkSSDChipNumber;             // SSD Module Chip Number
+  static const Double_t fgkSSDChipLength;          // SSD Module Chip Length
+  static const Double_t fgkSSDChipWidth;           // SSD Module Chip Width
+  static const Double_t fgkSSDChipHeight;          // SSD Module Chip Height
+  static const Double_t fgkSSDChipSeparationLength;// SSD Module Distance between Chips
+  static const Double_t fgkSSDChipGlueLength;      // SSD Module Chip Glue Layer Length
+  static const Double_t fgkSSDChipGlueWidth;       // SSD Module Chip Glue Layer Width 
+  static const Double_t fgkSSDChipGlueHeight;      // SSD Module Chip Glue Layer Height
+  /////////////////////////////////////////////////////////////////////////
+  // Stiffener Components
+  /////////////////////////////////////////////////////////////////////////
+  static const Double_t fgkSSDStiffenerLength;     // SSD Module Stiffener Length
+  static const Double_t fgkSSDStiffenerWidth;      // SSD Module Stiffener Width
+  static const Double_t fgkSSDStiffenerHeight;     // SSD Module Stiffener Height
+  static const Double_t fgkSSDStiffenerToChipDist; // SSD Module Stiffener position respect 
+                                                   // to sensor Edge
+  static const Double_t fgkSSDCapacitor0603Length; // SSD Stiffener Capacitor 0603 Length
+  static const Double_t fgkSSDCapacitor0603Width;  // SSD Stiffener Capacitor 0603 Width
+  static const Double_t fgkSSDCapacitor0603Height; // SSD Stiffener Capacitor 0603 Height
+  static const Double_t fgkSSDCapacitor0603CapLength; // SSD Stiffener Capacitor 1812 Cap Length 
+  static const Double_t fgkSSDCapacitor1812Length; // SSD Stiffener Capacitor 1812 Length 
+  static const Double_t fgkSSDCapacitor1812Width;  // SSD Stiffener Capacitor 1812 Width
+  static const Double_t fgkSSDCapacitor1812Height; // SSD Stiffener Capacitor 1812 Height
+  static const Double_t fgkSSDCapacitor1812CapLength; // SSD Stiffener Capacitor 1812 Cap Length 
+  static const Double_t fgkSSDWireLength;          // SSD Stiffener Wire Length
+  static const Double_t fgkSSDWireRadius;          // SSD Stiffener Wire Radius
+  static const Double_t fgkSSDConnectorPosition[2];// SSD Connector Position respect to Stiffener
+  static const Double_t fgkSSDConnectorSeparation; // SSD Connector separation distance
+  static const Double_t fgkSSDConnectorLength;     // SSD Stiffener Connector Length
+  static const Double_t fgkSSDConnectorWidth;      // SSD Stiffener Connector Width
+  static const Double_t fgkSSDConnectorHeight;     // SSD Stiffener Connector Height
+  static const Double_t fgkSSDConnectorAlHeight;     // SSD Stiffener Connector Al Height
+  static const Double_t fgkSSDConnectorNiHeight;     // SSD Stiffener Connector Ni Height
+  static const Double_t fgkSSDConnectorSnHeight;     // SSD Stiffener Connector Sn Height
   /////////////////////////////////////////////////////////////////////////
   // Flex
   /////////////////////////////////////////////////////////////////////////
-  static const Double_t fgkSSDFlexFullLength;
-  static const Double_t fgkSSDFlexLength[4];
-  static const Double_t fgkSSDFlexWidth[2];
-  static const Double_t fgkSSDFlexHeight[2];
-  static const Double_t fgkSSDFlexAngle;
-  static const Double_t fgkSSDFlexHoleLength;
-  static const Double_t fgkSSDFlexHoleWidth;
-  static const Double_t fgkSSDEndFlexCompLength[6];
-  static const Double_t fgkSSDEndFlexCompWidth[3];
-  TGeoMedium* fgkSSDKaptonFlexMedium;
-  TGeoMedium* fgkSSDAlTraceFlexMedium;
+  static const Double_t fgkSSDFlexFullLength;      // SSD Flex Full Length
+  static const Double_t fgkSSDFlexLength[4];       // SSD Flex Components Length
+  static const Double_t fgkSSDFlexWidth[2];        // SSD Flex Components Width
+  static const Double_t fgkSSDFlexHeight[2];       // SSD Flex Layers Height
+  static const Double_t fgkSSDFlexAngle;           // SSD Flex Angle 
+  static const Double_t fgkSSDFlexHoleLength;      // SSD Flex Hole Length
+  static const Double_t fgkSSDFlexHoleWidth;       // SSD Flex Hole Width
+  static const Double_t fgkSSDEndFlexCompLength[6];// SSD End-Flex Components Length
+  static const Double_t fgkSSDEndFlexCompWidth[3]; // SSD End-Flex Components Width
   /////////////////////////////////////////////////////////////////////////////////
   // SSD Ladder Cable 
   /////////////////////////////////////////////////////////////////////////////////
-  static const Double_t fgkSSDEndLadderCableLength;
-  static const Double_t fgkSSDLadderCableWidth;
-  TGeoMedium* fgkSSDAlTraceLadderCableMedium;
-  TGeoMedium* fgkSSDKaptonLadderCableMedium;
+  static const Double_t fgkSSDLadderCableWidth;    // SSD Ladder Cable Width
+  static const Double_t fgkSSDLadderCableHeight[2];  // SSD Ladder Cable Height (thickness)
   /////////////////////////////////////////////////////////////////////////
-  // SSD Module
+  // SSD Module Components 
   /////////////////////////////////////////////////////////////////////////
-  static const Double_t fgkSSDModuleStiffenerPosition[2];
-  static const Double_t fgkSSDModuleSensorSupportDistance;
-  static const Double_t fgkSSDModuleCoolingBlockToSensor;
-  static const Int_t fgkSSDModuleCombiTransNumber = 7;
-  void SetSSDModuleCombiTransMatrix(Double_t);
-  TGeoCombiTrans *SSDModuleCombiTransMatrix[fgkSSDModuleCombiTransNumber];
+  static const Double_t fgkSSDModuleStiffenerPosition[2]; // SSD Module Stiffener position 
+                                                          // respect to Sensor Edge
+  static const Double_t fgkSSDModuleSensorSupportDistance;// SSD Module Sensor Support Position 
+                                                          // respect to Sensor Edge 
+  static const Double_t fgkSSDModuleCoolingBlockToSensor; // SSD Cooling Block Position 
+                                                          // respect to sensor
   /////////////////////////////////////////////////////////////////////////
   // Chip Cables
   /////////////////////////////////////////////////////////////////////////
-  static const Double_t fgkSSDChipCablesLength[2];
-  static const Double_t fgkSSDChipCablesHeight[4];
-  static const Double_t fgkSSDChipCablesWidth[3];
-  TGeoMedium* fgkSSDKaptonChipCableMedium;
-  TGeoMedium* fgkSSDAlTraceChipCableMedium;
+  static const Double_t fgkSSDChipCablesLength[2]; // SSD Chip Cables Components Length
+  static const Double_t fgkSSDChipCablesHeight[4]; // SSD Chip Cables Components Height   
+  static const Double_t fgkSSDChipCablesWidth[3];  // SSD Chip Cables Components Width
   /////////////////////////////////////////////////////////////////////////
   // Cooling Block
   /////////////////////////////////////////////////////////////////////////
-  static const Double_t fgkSSDCoolingBlockLength;
-  static const Double_t fgkSSDCoolingBlockWidth;
-  static const Double_t fgkSSDCoolingBlockHeight[3];
-  static const Double_t fgkSSDCoolingBlockHoleRadius[2];
-  static const Double_t fgkSSDCoolingBlockHoleLength[2];
-  static const Double_t fgkSSDCoolingBlockHoleCenter;
-  static const Double_t fgkSSDCoolingBlockHoleHeight;
-  TGeoMedium* fgkSSDAlCoolBlockMedium;
+  static const Double_t fgkSSDCoolingBlockLength;       // SSD Cooling Block Length
+  static const Double_t fgkSSDCoolingBlockWidth;        // SSD Cooling Block Width   
+  static const Double_t fgkSSDCoolingBlockHeight[3];    // SSD Cooling Block Heiht
+  static const Double_t fgkSSDCoolingBlockHoleRadius[2];// SSD Cooling Block Hole Radius
+  static const Double_t fgkSSDCoolingBlockHoleLength[2];// SSD Cooling Block Hole Length 
+  static const Double_t fgkSSDCoolingBlockHoleCenter;   // SSD Cooling Block Hole Ceneter Position
+  static const Double_t fgkSSDCoolingBlockHoleHeight;   // SSD Cooling Block Hole Height
   /////////////////////////////////////////////////////////////////////////
   // SSD Sensor 
   /////////////////////////////////////////////////////////////////////////
-  static const char* fgkSSDSensitiveVolName;
-  static const Double_t fgkSSDSensorLength;
-  static const Double_t fgkSSDSensorHeight;
-  static const Double_t fgkSSDSensorWidth;
-  static const Double_t fgkSSDSensorOverlap;
-  static const Double_t fgkSSDSensorInsensitiveLength;
-  static const Double_t fgkSSDSensorInsensitiveWidth;
-  TGeoMedium* fgkSSDSensorMedium;
+  static const char* fgkSSDSensitiveVolName;           // SSD Name of the Sensitive Part of the Sensor
+  static const Double_t fgkSSDSensorLength;            // SSD Sensor Length              
+  static const Double_t fgkSSDSensorHeight;            // SSD Sensor Height
+  static const Double_t fgkSSDSensorWidth;             // SSD Sensor Width
+  static const Double_t fgkSSDSensorOverlap;           // SSD Sensor Beam Axis Overlap
+  static const Double_t fgkSSDSensorInsensitiveLength; // SSD Insensitive Part Length
+  static const Double_t fgkSSDSensorInsensitiveWidth;  // SSD Insensitive Part Width
   /////////////////////////////////////////////////////////////////////////
   // SSD Sensor Support 
   /////////////////////////////////////////////////////////////////////////
-  static const Int_t fgkSSDSensorSupportCombiTransNumber = 3;
-  static const Double_t fgkSSDSensorSideSupportLength;
-  static const Double_t fgkSSDSensorSideSupportWidth;
-  static const Double_t fgkSSDSensorSideSupportHeight[2];
-  static const Double_t fgkSSDSensorSideSupportThickness[2];
-  static const Double_t fgkSSDSensorSideSupportPosition;
-  static const Double_t fgkSSDSensorCenterSupportLength;
-  static const Double_t fgkSSDSensorCenterSupportWidth;
-  static const Double_t fgkSSDSensorCenterSupportHeight[2];
-  static const Double_t fgkSSDSensorCenterSupportThickness[2];
-  static const Double_t fgkSSDSensorCenterSupportPosition;
-  void SetSSDSensorSupportCombiTransMatrix();
-  TGeoCombiTrans *SSDSensorSupportCombiTransMatrix[fgkSSDSensorSupportCombiTransNumber];
-  TGeoMedium* fgkSSDSensorSupportMedium;
+  static const Double_t fgkSSDSensorSideSupportLength;        // SSD Side Sensor Support Length
+  static const Double_t fgkSSDSensorSideSupportWidth;         // SSD Side Sensor Support Width
+  static const Double_t fgkSSDSensorSideSupportHeight[2];     // SSD Side Sensor Support Height
+  static const Double_t fgkSSDSensorSideSupportThickness[2];  // SSD Side Sensor Support Thickness 
+  static const Double_t fgkSSDSensorSideSupportPosition;      // SSD Side Sensor Support Position 
+  static const Double_t fgkSSDSensorCenterSupportLength;      // SSD Center Sensor Support Length
+  static const Double_t fgkSSDSensorCenterSupportWidth;       // SSD Center Sensor Support Width
+  static const Double_t fgkSSDSensorCenterSupportHeight[2];   // SSD Center Sensor Support Height
+  static const Double_t fgkSSDSensorCenterSupportThickness[2];// SSD Center Sensor Support Thickness
+  static const Double_t fgkSSDSensorCenterSupportPosition;    // SSD Center Sensor Support Position
+  static const Int_t fgkSSDSensorSupportCombiTransNumber = 3; // Number of TGeoCombiTrans 
+                                                              // for positioning volumes in Sensor Support Assembly       
   /////////////////////////////////////////////////////////////////////////
   //Parameters for Carbon Fiber 
   /////////////////////////////////////////////////////////////////////////
-  static const Int_t fgkCarbonFiberAssemblyCombiTransNumber = 3;
-  static const Double_t fgkCarbonFiberTriangleLength;
-  static const Double_t fgkCarbonFiberTriangleAngle;
-  static const Double_t fgkCarbonFiberSupportTopEdgeDist[2];
-  static const Double_t fgkCarbonFiberSupportEdgeLength;
-  static const Double_t fgkCarbonFiberSupportWidth;
-  static const Double_t fgkCarbonFiberSupportXAxisLength;
-  static const Double_t fgkCarbonFiberSupportYAxisLength;
-  void SetCarbonFiberAssemblyCombiTransMatrix();
-  TGeoCombiTrans *CarbonFiberAssemblyCombiTransMatrix[fgkCarbonFiberAssemblyCombiTransNumber];
-  TGeoMedium* fgkSSDCarbonFiberMedium;
+  static const Double_t fgkCarbonFiberTriangleLength;            // Carbon Fiber Triangle Length 
+  static const Double_t fgkCarbonFiberTriangleAngle;             // Carbon Fiber Triangle Angle
+  static const Double_t fgkCarbonFiberSupportTopEdgeDist[2];     // Carbon Fiber Support Top Edge Components
+  static const Double_t fgkCarbonFiberSupportEdgeLength;         // Carbon Fiber Support Edge Lenght
+  static const Double_t fgkCarbonFiberSupportWidth;              // Carbon Fiber Support Edge Width
+  static const Double_t fgkCarbonFiberSupportXAxisLength;        // Carbon Fiber Support X Axis Lenght
+  static const Double_t fgkCarbonFiberSupportYAxisLength;        // Carbon Fiber Support Y Axis Lenght
+  static const Int_t fgkCarbonFiberAssemblyCombiTransNumber = 3; // Number of TGeoCombiTrans 
+                                                                 // for positioning volumes in Carbon Fiber Assembly 
   //////////////////////////////////////////////////////////////////////////////
   // Carbon Fiber Junction Parameters
   //////////////////////////////////////////////////////////////////////////////
-  static const Int_t fgkCarbonFiberJunctionCombiTransNumber = 3;
-  static const Double_t fgkCarbonFiberJunctionLength;
-  static const Double_t fgkCarbonFiberJunctionWidth;
-  static const Double_t fgkCarbonFiberJunctionEdge[2];
-  static const Double_t fgkCarbonFiberJunctionAngle[2];
-  static const Double_t fgkCarbonFiberJunctionToSensorSupport;
-  void SetCarbonFiberJunctionCombiTransMatrix();
-  TGeoCombiTrans *CarbonFiberJunctionCombiTransMatrix[fgkCarbonFiberJunctionCombiTransNumber];
+  static const Double_t fgkCarbonFiberJunctionLength;            // Carbon Fiber Junction Length             
+  static const Double_t fgkCarbonFiberJunctionWidth;             // Carbon Fiber Junction Width 
+  static const Double_t fgkCarbonFiberJunctionEdge[2];           // Carbon Fiber Junction Edge Length  
+  static const Double_t fgkCarbonFiberJunctionAngle[2];          // Carbon Fiber Junction Angle 
+  static const Double_t fgkCarbonFiberJunctionToSensorSupport;   // Carbon Fiber Junction position respect to sensor
   /////////////////////////////////////////////////////////////////////////
   //Parameters for Carbon Fiber Lower Support (lengths are in mm)
   /////////////////////////////////////////////////////////////////////////
-  static const Double_t fgkCarbonFiberLowerSupportWidth;
-  static const Double_t fgkCarbonFiberLowerSupportLowerLenght;
-  static const Double_t fgkCarbonFiberLowerSupportHeight;
-  static const Double_t fgkCarbonFiberLowerSupportTransverseWidth;
-  static const Double_t fgkCarbonFiberLowerSupportVolumeSeparation;
-  static const Double_t fgkCarbonFiberLowerSupportVolumePosition[2];
+  static const Double_t fgkLowerSupportToSensorZ;                   // Distance from lower support to sensor center
+  static const Double_t fgkCarbonFiberLowerSupportWidth;            // Lower Support of Carbon Fiber Width
+  static const Double_t fgkCarbonFiberLowerSupportLowerLenght;      // Lower Support of Carbon Fiber Length
+  static const Double_t fgkCarbonFiberLowerSupportHeight;           // Lower Support of Carbon Fiber Height
+  static const Double_t fgkCarbonFiberLowerSupportTransverseWidth;  // Lower Support of Carbon Fiber Transverse separation
+  static const Double_t fgkCarbonFiberLowerSupportVolumeSeparation; // Distance between Lower Supports of Carbon Fiber 
+  static const Double_t fgkCarbonFiberLowerSupportVolumePosition[2];// Carbon fiber lower Support Position  
   /////////////////////////////////////////////////////////////////////////
-  // End Ladder Carbon Fiber Junction Parameters (lengths are in mm and angles in degrees)
+  // End Ladder Carbon Fiber Lower Junction Parameters (lengths are in mm and angles in degrees)
   /////////////////////////////////////////////////////////////////////////
-  static const Int_t fgkEndLadderCarbonFiberJunctionCombiTransNumber = 3;
-  static const Double_t fgkEndLadderCarbonFiberLowerJunctionLength[2]; 
-  static const Double_t fgkEndLadderCarbonFiberUpperJunctionLength[2]; 
-  static const Double_t fgkEndLadderMountingBlockPosition[2];
-  void SetEndLadderCarbonFiberJunctionCombiTransMatrix(Int_t);
-  TGeoCombiTrans *EndLadderCarbonFiberJunctionCombiTransMatrix[fgkEndLadderCarbonFiberJunctionCombiTransNumber];
+  static const Double_t fgkEndLadderCarbonFiberLowerJunctionLength[2];   // End Ladder Carbon Fiber Lower Up Support length 
+  static const Double_t fgkEndLadderCarbonFiberUpperJunctionLength[2];   // End Ladder Carbon Fiber Lower Down Support length 
+  static const Double_t fgkEndLadderMountingBlockPosition[2];            // End Ladder Mounting Block Position 
+  static const Double_t fgkendladdercoolingsupportdistance[3];                  // End Ladder Cooling Support Position
   /////////////////////////////////////////////////////////////////////////
   // Cooling Tube Support (lengths are in mm and angles in degrees)
   /////////////////////////////////////////////////////////////////////////
-  static const Int_t fgkCoolingTubeSupportCombiTransNumber = 2;
-  static const Double_t fgkCoolingTubeSupportRmax;
-  static const Double_t fgkCoolingTubeSupportRmin;
-  static const Double_t fgkCoolingTubeSupportLength;
-  static const Double_t fgkCoolingTubeSupportHeight;
-  static const Double_t fgkCoolingTubeSupportWidth;
-  static const Double_t fgkCoolingTubeSupportSeparation;
-  static const Double_t fgkCoolingTubeSupportToCarbonFiber;
-  void SetCoolingTubeSupportCombiTransMatrix();
-  TGeoCombiTrans *CoolingTubeSupportCombiTransMatrix[fgkCoolingTubeSupportCombiTransNumber];
-  TGeoMedium* fgkSSDTubeHolderMedium;
+  static const Double_t fgkCoolingTubeSupportRmax;          // Cooling Tube Support Max Radius
+  static const Double_t fgkCoolingTubeSupportRmin;          // Cooling Tube Support Min Radius
+  static const Double_t fgkCoolingTubeSupportLength;        // Cooling Tube Support Length
+  static const Double_t fgkCoolingTubeSupportHeight;        // Cooling Tube Support Height
+  static const Double_t fgkCoolingTubeSupportWidth;         // Cooling Tube Support Width
+  static const Double_t fgkCoolingTubeSupportSeparation;    // Cooling Tube Support Separation
+  static const Double_t fgkCoolingTubeSupportToCarbonFiber; // Cooling Tube Support position respect to Carbon Fiber  
   /////////////////////////////////////////////////////////////////////////////////
   // Cooling Tube (lengths are in mm and angles in degrees)
   /////////////////////////////////////////////////////////////////////////////////
-  static const Int_t    fgkCoolingTubeCombiTransNumber = 2;
-  static const Double_t fgkCoolingTubeRmax;
-  static const Double_t fgkCoolingTubeRmin;
-  static const Double_t fgkCoolingTubeLength;
-  static const Double_t fgkCoolingTubeSeparation;
-  void SetCoolingTubeCombiTransMatrix();
-  TGeoCombiTrans *CoolingTubeTransMatrix[fgkCoolingTubeCombiTransNumber];
-  TGeoMedium* fgkSSDCoolingTubeWater;
-  TGeoMedium* fgkSSDCoolingTubePhynox;
+  static const Double_t fgkCoolingTubeRmax;       // Cooling Tube Max Radius 
+  static const Double_t fgkCoolingTubeRmin;       // Cooling Tube Min Radius
+  static const Double_t fgkCoolingTubeLength;     // Cooling Tube Length  
+  static const Double_t fgkCoolingTubeSeparation; // Cooling Tube Separation
+  static const Double_t fgkMountingBlockToSensorSupport; // Distance between Mounting block and Side Sensor Support    
   /////////////////////////////////////////////////////////////////////////
   // SSD Mounting Block Parameters (lengths are in mm and angles in degrees)
   /////////////////////////////////////////////////////////////////////////
-  static const Double_t fgkSSDMountingBlockLength[3];  
-  static const Double_t fgkSSDMountingBlockHeight[4];
-  static const Double_t fgkSSDMountingBlockWidth;
-  static const Double_t fgkSSDMountingBlockHoleTrapezoidAngle;
-  static const Double_t fgkSSDMountingBlockHoleTrapezoidHeight;
-  static const Double_t fgkSSDMountingBlockHoleTrapezoidUpBasis;
-  static const Double_t fgkSSDMountingBlockHoleTubeLength[2];
-  static const Double_t fgkSSDMountingBlockHoleTubeWidth[2]; 
-  static const Double_t fgkSSDMountingBlockHoleRadius;
-  static const Double_t fgkSSDMountingBlockScrewHoleEdge;
-  static const Double_t fgkSSDMountingBlockScrewHoleHeigth;
-  static const Double_t fgkSSDMountingBlockScrewHoleRadius[2];
-  TGeoMedium* fgkSSDMountingBlockMedium;
-  /////////////////////////////////////////////////////////////////////////
-  // LadderSegment 
-  /////////////////////////////////////////////////////////////////////////
-  static const Int_t fgkLadderSegmentCombiTransNumber = 5;
-  void SetLadderSegmentCombiTransMatrix();
-  TGeoCombiTrans *LadderSegmentCombiTransMatrix[fgkLadderSegmentCombiTransNumber];
-  static const Int_t fgkEndLadderSegmentCombiTransNumber = 4;
-  void SetEndLadderSegmentCombiTransMatrix(Int_t);
-  TGeoCombiTrans *EndLadderSegmentCombiTransMatrix[fgkEndLadderSegmentCombiTransNumber];
+  static const Double_t fgkSSDMountingBlockLength[3];  // SSD Mounting Block Components Lengths
+  static const Double_t fgkSSDMountingBlockHeight[4];  // SSD Mounting Block Components Heights
+  static const Double_t fgkSSDMountingBlockWidth;      // SSD Mounting Block Width
+  static const Double_t fgkSSDMountingBlockHoleTrapezoidAngle;  // SSD Mounting Block Hole Trapezoid Angle
+  static const Double_t fgkSSDMountingBlockHoleTrapezoidHeight; // SSD Mounting Block Hole Trapezoid Height
+  static const Double_t fgkSSDMountingBlockHoleTrapezoidUpBasis;// SSD Mounting Block Hole Trapezoid Up Basis Length
+  static const Double_t fgkSSDMountingBlockHoleTubeLength[2];   // SSD Mounting Block Hole Tube Lengths   
+  static const Double_t fgkSSDMountingBlockHoleTubeWidth[2];    // SSD Mounting Block Hole Tube Width   
+  static const Double_t fgkSSDMountingBlockHoleRadius;          // SSD Mounting Block Hole radius  
+  static const Double_t fgkSSDMountingBlockScrewHoleEdge;       // SSD Mounting Block Screw Hole Edge  
+  static const Double_t fgkSSDMountingBlockScrewHoleHeight;     // SSD Mounting Block Screw Hole Height  
+  static const Double_t fgkSSDMountingBlockScrewHoleRadius[2];  // SSD Mounting Block Screw Hole Radii
+  /////////////////////////////////////////////////////////////////////////
+  // SSD Mounting Block Clip Parameters (lengths are in mm and angles in degrees)
+  /////////////////////////////////////////////////////////////////////////
+  static const Double_t fgkMountingBlockClipLength;          // SSD Mounting Block Clip Length  
+  static const Double_t fgkMountingBlockClipThickness;       // SSD Mounting Block Clip Thickness 
+  static const Double_t fgkMountingBlockClibScrewRadius;     // SSD Mounting Block Clip Radius 
+  static const Double_t fgkMountingBlockClibScrewPosition;  // SSD Mounting Block Clip Screw Position
+  static const Double_t fgkMountingBlockClibWidth;          // SSD Mounting Block Clip 
+  /////////////////////////////////////////////////////////////////////////////////
+  // SSD Mounting Block Support Parameters (lengths are in mm and angles in degrees)
+  /////////////////////////////////////////////////////////////////////////////////
+  static const Double_t fgkMountingBlockSupportWidth[2]; // SSD Mounting Block Support Width
+  static const Double_t fgkMountingBlockSupportDownHeight; // SSD Mounting Block Support Down Height
+  static const Double_t fgkMountingBlockSupportRadius[2];  // SSD Mounting Block Support Radius
+  static const Double_t fgkMountingBlockSupportUpHeight[2]; // SSD Mounting Block Support Height
+  static const Double_t fgkLadderSupportHeight;            // SSD Ladder Support Width
+  static const Double_t fgkLadderSupportRingLay5Position;  // SSD Ladder Support Ring Position Layer5 respect to ITS center
+  static const Double_t fgkLadderSupportRingLay6Position;  // SSD Ladder Support Ring Position Layer6 respect to ITS center
+  /////////////////////////////////////////////////////////////////////////////////
+  // SSD End Cap Cover Plate Parameters (lengths are in mm and angles in degrees)
+  /////////////////////////////////////////////////////////////////////////////////
+  static const Double_t fgkEndCapCoverPlateSmallHoleRadius; // End Cap Cover Plate Hole Small Radious 
+  static const Double_t fgkEndCapCoverPlateBigHoleRadius;   // End Cap Cover Plate Hole Big Radious
+  static const Double_t fgkEndCapCoverPlateThickness;       // End Cap Cover Plate Thickness
+  static const Double_t fgkEndCapCoverPlateSmallHoleSeparation[3]; // End Cap Cover Plate Hole Separation
+  static const Double_t fgkEndCapCoverPlateLength[6];       // End Cap Cover Plate Length
+  static const Double_t fgkEndCapCoverPlateWidth[3];        // End Cap Cover Plate Width
+  static const Double_t fgkEndCapCoverPlateScrewRadiusMin;  // End Cap Cover Plate Screw Radius Min
+  static const Double_t fgkEndCapCoverPlateScrewRadiusMax;  // End Cap Cover Plate Screw Radius Max
+  static const Double_t fgkEndCapCoverPlateClipLength;      // End Cap Cover Plate Clip Length
+  static const Double_t fgkEndCapCoverPlateClipWidth;       // End Cap Cover Plate Clip Width
+  static const Double_t fgkEndCapCoverPlateDownClipLength;  // End Cap Cover Plate Down Clip Length
+  static const Double_t fgkEndCapCoverPlateDownClipWidth;   // End Cap Cover Plate Down Clip Width
+  /////////////////////////////////////////////////////////////////////////////////
+  // SSD End Cap Cooling Tube Parameters (lengths are in mm and angles in degrees)
+  /////////////////////////////////////////////////////////////////////////////////
+  static const Double_t fgkEndCapCoolingTubeAxialRadius[2]; // End Cap Cooling Tube Axial Radius
+  static const Double_t fgkEndCapCoolingTubeRadiusMin; // End Cap Cooling Tube Min Radius
+  static const Double_t fgkEndCapCoolingTubeRadiusMax; // End Cap Cooling Tube Max Radius
+  static const Double_t fgkEndCapCoolingTubeAngle[5];  // End Cap Cooling Tube Angle
+  static const Double_t fgkEndCapCoolingTubeLength[5]; // End Cap Cooling Tube Length
+  static const Double_t fgkEndCapCoolingTubeToCoverSide; // End Cap Cooling Tube Position respect to CoverSide
+  /////////////////////////////////////////////////////////////////////////////////
+  // SSD End Cap Cover Side Parameters (lengths are in mm and angles in degrees)
+  /////////////////////////////////////////////////////////////////////////////////
+  static const Double_t fgkEndCapSideCoverLength[5]; // End Cap Cover Side Length
+  static const Double_t fgkEndCapSideCoverWidth[7]; //  End Cap Cover Side Width
+  static const Double_t fgkEndCapSideCoverThickness; // End Cap Cover Side Thickness
+  /////////////////////////////////////////////////////////////////////////////////
+  // SSD End Cap Cards Parameters (lengths are in mm and angles in degrees)
+  /////////////////////////////////////////////////////////////////////////////////
+  static const Double_t  fgkEndCapCardElectBoardBackLength[3]; // End Cap Card Electronic Board Back Length 
+  static const Double_t  fgkEndCapCardElectBoardBackWidth[2];  // End Cap Card Electronic Board Back Width 
+  static const Double_t  fgkEndCapCardElectBoardBackThickness; // End Cap Card Electronic Board Back Thickness 
+  static const Double_t  fgkEndCapCardElectBoardLength;        // End Cap Card Electronic Board Length
+  static const Double_t  fgkEndCapCardElectBoardLayerWidth[2]; // End Cap Card Electronic Board Layer Width
+  static const Double_t  fgkEndCapCardElectBoardLayerThickness;// End Cap Card Electronic Board Layer Thickness 
+  static const Double_t  fgkEndCapCardJMDConnectorThickness;   // End Cap Card JMD Connector Thickness
+  static const Double_t  fgkEndCapCardJMDConnectorLength[2];   // End Cap Card JMD Connector Length
+  static const Double_t  fgkEndCapCardJMDConnectorWidth[2];    // End Cap Card JMD Connector Width
+  static const Double_t  fgkEndCapCardJMDConnectorToLayer;     // End Cap Card JMD Connector to Layer Distance 
+  static const Double_t  fgkEndCapCardCableConnectorLength[3]; // End Cap Card Cable Connector Length
+  static const Double_t  fgkEndCapCardCableConnectorWidth[2];  // End Cap Card Cable Connector Width
+  static const Double_t  fgkEndCapCardCableConnectorThickness; // End Cap Card Cable Connector Thickness
+  static const Double_t  fgkEndCapCardCableConnectorDistance;  // End Cap Card Cable Connector Distance
+  static const Double_t  fgkEndCapCardCableConnectorToLayer;   // End Cap Card Cable Connector To Layer Distance
+  static const Double_t  fgkEndCapStripConnectionLength;       // End Cap Strip Connection Length
+  static const Double_t  fgkEndCapStripConnectionThickness;    // End Cap Strip Connection Thickness
+  static const Double_t  fgkEndCapStripConnectionWidth;        // End Cap Strip Connection Width
+  static const Double_t  fgkEndCapInterfaceCardBLength[7];     // End Cap Interface CardB Length
+  static const Double_t  fgkEndCapInterfaceCardBWidth[5];      // End Cap Interface CardB Width
+  static const Double_t  fgkEndCapInterfaceCardBThickness;     // End Cap Interface CardB Thickness
+  static const Double_t  fgkEndCapInterfaceElectBoardCardBThickness; // End Cap Interface Elect Board CardB Thickness 
+  static const Double_t  fgkEndCapInterfaceCardBJMDConnectorSeparation; // End Cap Interface CardB JMD Connector Separation
+  static const Double_t  fgkEndCapStiffenerLength;             // End Cap Stiffener Length
+  static const Double_t  fgkEndCapStiffenerWidth;                         // End Cap Stiffener Width
+  static const Double_t  fgkEndCapStiffenerThickness;          // End Cap Stiffener Thickness
+  static const Double_t  fgkEndCapEffectiveCableRadiusMin;     // End Cap Effective Cable Radius Min
+  static const Double_t  fgkEndCapEffectiveCableRadiusMax;     // End Cap Effective Cable Radius Max
+  /////////////////////////////////////////////////////////////////////////////////
+  // SSD End Cap SupportLayer5/6 Side Parameters (lengths are in mm and angles in degrees)
+  /////////////////////////////////////////////////////////////////////////////////
+  static const Double_t fgkEndCapLay5SupportLength; // End Cap Layer5 Support Length
+  static const Double_t fgkEndCapLay5SupportMiddleRadius; // End Cap Layer5 Support Middle Radius
+  static const Double_t fgkEndCapLay5SupportLowRadius; // End Cap Layer5 Support Low Radius
+  static const Double_t fgkEndCapLay5SupportHighWidth; // End Cap Layer5 High Radius
+  static const Double_t fgkEndCapLay5SupportLowWidth; // End Cap Layer5 Low Width
+  static const Double_t fgkEndCapSupportLength[2]; // End Cap Layer5/6 Support Length
+  static const Double_t fgkEndCapSupportMiddleRadius[2]; // End Cap Layer5/6 Support Middle Radius
+  static const Double_t fgkEndCapSupportLowRadius[2]; // End Cap Layer5/6 Support Low Radius
+  static const Double_t fgkEndCapSupportHighWidth; // End Cap Layer5/6 High Radius
+  static const Double_t fgkEndCapSupportLowWidth[2]; // End Cap Layer5/6 Low Width  
+  static const Double_t fgkEndCapSupportCenterLay5ITSPosition; // End Cap Support Center ITS Position Layer 5
+  static const Double_t fgkEndCapSupportCenterLay5Position; // End Cap Support Position Respect Z Axis Origin Layer 5 
+  static const Double_t fgkEndCapSupportCenterLay6ITSPosition; // End Cap Support Center ITS Position Layer 6
+  static const Double_t fgkEndCapSupportCenterLay6Position; // End Cap Support Position Respect Z Axis Origin Layer 6 
+  /////////////////////////////////////////////////////////////////////////////////
+  // SSD End Cap Kapton Foil Parameters (lengths are in mm and angles in degrees)
+  ////////////////////////////////////////////////////////////////////////////////
+  static const Double_t fgkEndCapKaptonFoilThickness; // End Cap Kapton Foil Thickness
+  static const Double_t fgkEndCapKaptonFoilLength;    // End Cap Kapton Foil Length
+  static const Double_t fgkEndCapKaptonFoilWidth ;    // End Cap Kapton Foil Width
+  /////////////////////////////////////////////////////////////////////////
+  // SSD Cone
+  /////////////////////////////////////////////////////////////////////////
+  static const Double_t fgkSSDLowerPConeRadius; // SSD Cone Lower Radius
+  static const Double_t fgkSSDPConeAngle;        // SSD Cone Angle
+  static const Double_t fgkSSDPConeZLength[2];   // SSD Cone ZLength
+  static const Double_t fgkSSDPConeLittleHoleRadius; // SSD Cone Little Hole Radius
+  static const Double_t fgkSSDPConeLittleHoleLength; // SSD Cone Little Hole Length
+  static const Double_t fgkSSDConeMiddleRadius; // SSD Cone Middle Radius 
+  static const Double_t fgkSSDPConeMiddleLength; // SSD Cone Middle Length
+  static const Double_t fgkSSDPConeMiddleWidth; // SSD Cone Middle Width
+  static const Double_t fgkSSDPConeUpRadius;  // SSD Cone Up Radius
+  static const Double_t fgkSSDPConeUpMaxRadius; // SSD Cone Up Max Radius
+  static const Double_t fgkSSDPConeUpMiddleRadius; // SSD Cone Up Middle Radius
+  static const Double_t fgkSSDPConeDownRadius; // SSD Cone Down Radius
+  static const Double_t fgkSSDPConeTrapezoidAngle; // SSD Cone Trapezoid Angle
+  static const Double_t fgkSSDPConeTrapezoidBasis; // SSD Cone Trapezoid Basis
+  static const Double_t fgkSSDPConeExternalRadius; // SSD Cone External Radius 
+  static const Double_t fgkSSDPConeRadiusWidth; // SSD Cone Radius Width
+  static const Double_t fgkSSDPConeLength; // SSD Cone Length
+  static const Double_t fgkSSDCentralSupportLength; //SSD Central Support Length
+  static const Double_t fgkSSDCentralSupportRadius; // SSD Central Support Radius 
+  static const Double_t fgkSSDCentralSupportWidth; // SSD Central Support Width
+  static const Double_t fgkSSDCentralAL3SupportLength; // SSD Central Support Length
+  static const Double_t fgkSSDCentralAL3SupportWidth; // SSD Central Support Width
+  /////////////////////////////////////////////////////////////////////////
+  // SSD Cables e Patch Panel
+  /////////////////////////////////////////////////////////////////////////
+  static const Double_t fgkSSDCablesLay5TubeRadiusMin; // Radius Min Cable Tube Layer 5
+  static const Double_t fgkSSDCablesLay6TubeRadiusMin; // Radius Min Cable Tube Layer 6
+  static const Double_t fgkSSDCablesLay5RightSideHeight;  // Width Lay 5 Cables to be fixed in order to reproduce material budget
+  static const Double_t fgkSSDCablesLay6RightSideHeight;  // // Width Lay 5 Cables to be fixed in order to reproduce material budget
+  static const Double_t fgkSSDCableAngle; // Angle Cable   
+  static const Double_t fgkSSDCablesLay5RightSideWaterHeight;  // Width Lay 5 Water Cables to be fixed in order to reproduce material budget
+  static const Double_t fgkSSDCablesPatchPanel2RB26Angle[2]; // Angle Position Patch Panel RB26
+  static const Double_t fgkSSDCablesPatchPanel2RB24Angle[2]; // Angle Position Patch Panel RB24
+  static const Double_t fgkSSDPatchPanel2RB26ITSDistance;    // Patch Panel RB26 Position
+  static const Double_t fgkSSDPatchPanel2RB24ITSDistance;   // Patch Panel RB24 Position 
+  static const Double_t fgkSSDPatchPanel2RB26Radius; // Patch Panel Radius 
+  static const Double_t fgkSSDPatchPanel2RB24Radius; // Patch Panel Radius
+  static const Double_t fgkSSDPatchPanelHeight; // Patch Panel Height
+  static const Double_t fgkSSDCableMaterialBudgetHeight; // SSD Cable Material Budget
+  /////////////////////////////////////////////////////////////////////////
+  // Private methods for private members generation
+  /////////////////////////////////////////////////////////////////////////
+
+  void CreateTransformationMatrices();  // Method setting the transformation matrices
+  void CreateBasicObjects();                   // Method creating the basic objects of ssd geometry
+  void SetSSDSensor();                                 // Method setting the SSD Layer 5 and 6 sensors
+  TList* GetCarbonFiberSupportList();  // Method generating CarbonFiberSupport
+  TGeoVolume* GetCarbonFiberJunction(Double_t width); // Method generating 
+                                                                               // CarbonFiberJunction
+  TList* GetCarbonFiberLowerSupportList(); 
+                                                                           // Method generating CarbonFiberLowerSupport
+  TGeoVolume* GetSSDSensorSupport(Double_t length, Double_t height, 
+                                                                 Double_t width, Double_t* thickness) const; //
+                                                                               // Method generating SSDSensorSupport
+  TGeoVolume* GetCoolingTubeSupport(Int_t nedges); // Method generating CoolingTubeSupport 
+  TList* GetSSDHybridParts();                  // Method setting Hybrid Components 
+  TGeoVolume* GetCoolingBlockSystem();  // Method generating Cooling Block System
+  TGeoVolume* GetSSDStiffenerFlex()const;    // Method generating StiffenerFlex
+  TGeoVolume* GetSSDEndFlex();                 // Method generating EndFlex
+  TGeoVolume* GetSSDMountingBlock();   // Method generating Mounting Block
+  TGeoVolume* GetMountingBlockClip() const;   // Method generating Mounting Block Clip
+  void CreateCoolingTubes();                   // Create/set cooling tubes 
+  TGeoVolume* GetSSDCoolingBlock(Int_t nedges); 
+                                                                           // Method generating StiffenerFlex
+  void GetSSDChipCables(TGeoVolume *&cableL, TGeoVolume *&cableR, Double_t SSDChipCablesHeigth, Int_t nedges); 
+                                                                               // Method setting ChipCables
+  TGeoVolume* GetSSDChip() const;     // Method generating Chips
+  TList* GetLadderCableSegment(Double_t ssdendladdercablelength); 
+                                                                               // Method generating LadderCableSegment
+  TGeoVolume* GetLadderCable(Int_t n, Double_t ssdendladdercablelength); 
+                                                                               // Method generating Ladder Cable
+  TGeoVolume* GetLadderCableAssembly(Int_t n, Double_t ssdendladdercablelength); 
+                                                                               // Method generating Ladder Cable Assembly
+  TList* GetLadderCableAssemblyList(Int_t n, Double_t ssdendladdercablelength); 
+                                                                               // Method generating Ladder Cable List
+  TList* GetMountingBlockSupport(Int_t nedges); // Get Mounting Block Support
+  void SetLadderSupport(Int_t nedges); // It generates the ladder support
+  TGeoVolume* GetEndCapCoolingTube();  // End Cap Cooling Tube
+  TGeoVolume* GetEndCapCoverPlate();   // End Cap Cover Plate
+  TGeoVolume* GetEndCapSideCover() const;    // End Cap Side Cover
+  TGeoVolume** GetEndCapCards() const;       // End Cap Cards
+  TGeoVolume** EndCapSupport();        // End Cap Support Layer 5 and Layer 6
+  void SetEndCapSupportAssembly();     // EndCap Support + End Cap Layer 5 and 6
+  TGeoVolume* GetEndCapEffectiveCables(Double_t radiusmin, Double_t radiusmax, 
+                                                                          Double_t width,Int_t ncables,const char* volname); // End Cap Effective HV Cables
+  TGeoXtru* GetArcShape(Double_t phi, Double_t rmin, 
+                                           Double_t rmax, Int_t nedges, Double_t height); 
+                                                                               //Auxiliary Method for Arc Shape
+  TGeoArb8* GetArbShape(TVector3* vertexpos[],Double_t* width, 
+                        Double_t height,const char* shapename,Int_t isign = 1) const;
+                                                                          // Method generating an Arb shape 
+  TGeoShape* GetScrewShape(Double_t* radius,Int_t* edgesnumber,Double_t* section) const;// Method Generating the Screw Shape  
+  TGeoShape* GetHoleShape(Double_t radius, Int_t nedges, Double_t *section) const;// Method Generating the Hole Shape  
+  TVector3* GetReflection(TVector3* vector,Double_t* param) const; 
+                                                                               // Given an axis specified by param,
+                                                                               // it gives the reflection of the point respect to the axis
+  TGeoHMatrix* AddTranslationToHMatrix(TGeoHMatrix* ct,Double_t dx,Double_t dy,
+                                                       Double_t dz) const;
+                                                                               // add (dx,dy,dz) translation to a initial TGeoCombiTrans
+  /////////////////////////////////////////////////////////////////////////
+  // Private members
+  /////////////////////////////////////////////////////////////////////////
+  // Materials
+  /////////////////////////////////////////////////////////////////////////
+  TGeoMedium* fSSDChipMedium;                    // SSD Module Chip Medium
+  TGeoMedium* fSSDChipGlueMedium;                // SSD Module Chip Glue Layer Medium 
+  TGeoMedium* fSSDStiffenerMedium;               // SSDStiffener Medium 
+  TGeoMedium* fSSDStiffenerConnectorMedium;      // SSD Stiffener Connector Medium 
+  TGeoMedium* fSSDStiffener0603CapacitorMedium;  // SSD Stiffener Capacitor 0603 Medium 
+  TGeoMedium* fSSDStiffener1812CapacitorMedium;  // SSD Stiffener Capacitor 1812 Medium 
+  TGeoMedium* fSSDStiffenerCapacitorCapMedium;  // SSD Stiffener Capacitor Cap Medium 
+  TGeoMedium* fSSDStiffenerHybridWireMedium;     // SSD Stiffener Wire Medium  
+  TGeoMedium* fSSDKaptonFlexMedium;              // SSD Flex Kapton Layer Medium    
+  TGeoMedium* fSSDAlTraceFlexMedium;             // SSD Flex Al Layer Medium 
+  TGeoMedium* fSSDAlTraceLadderCableMedium;      // SSD Ladder Cable Al Layer Medium
+  TGeoMedium* fSSDKaptonLadderCableMedium;       // SSD Ladder Cable Kapton Layer Medium
+  TGeoMedium* fSSDKaptonChipCableMedium;         // SSD Chip Cables Kapton Layer Medium 
+  TGeoMedium* fSSDAlTraceChipCableMedium;        // SSD Chip Cables Al Layer Medium
+  TGeoMedium* fSSDAlCoolBlockMedium;             // SSD Cooling Block Al Medium
+  TGeoMedium* fSSDSensorMedium;                  // SSD Sensor Medium  
+  TGeoMedium* fSSDSensorSupportMedium;                  // SSD Sensor Support Medium   
+  TGeoMedium* fSSDCarbonFiberMedium;             // SSD Carbon Fiber Medium 
+  TGeoMedium* fSSDTubeHolderMedium;              // Cooling Tube Support Medium
+  TGeoMedium* fSSDCoolingTubeWater;              // Medium for Inner Part of Cooling Tube
+  TGeoMedium* fSSDCoolingTubePhynox;             // Medium for Cooling Tube 
+  TGeoMedium* fSSDSupportRingAl;                 // Medium for Support Ring
+  TGeoMedium* fSSDMountingBlockMedium;           // Medium for SSD Mounting Block  
+  TGeoMedium* fSSDRohaCellCone;                  // Medium for SSD Ring Cone Support
+  TGeoMedium* fSSDAir;                                                  // SSD Air
+  TGeoMedium* fSSDCopper;                        // Copper for SSD Cables
+  TGeoMedium* fSSDSn;                            // Tin for SSD solderings
+  /////////////////////////////////////////////////////////////////////////
+  Bool_t fCreateMaterials;               // Bool variable which verifies if materials have been created
+  Bool_t fTransformationMatrices; // Bool variable which verifies if matrices have been allocated
+  Bool_t fBasicObjects;          // Bool variable which verifies if basic objects have been allocated
+  /////////////////////////////////////////////////////////////////////////
+  // Carbon Fiber Support Matrices and Objects
+  ////////////////////////////////////////////
+  static const Int_t fgkcarbonfibersupportnumber = 2;                             // Support Number    
+  TGeoVolume* fcarbonfibersupport[fgkcarbonfibersupportnumber];                   // Support
+  TGeoHMatrix* fcarbonfibersupportmatrix[fgkcarbonfibersupportnumber]; // Support Matrix
+  /////////////////////////
+  // Carbon Fiber Junction
+  ////////////////////////
+  static const Int_t fgkcarbonfiberjunctionumber = 3;  // Carbon Fiber Number
+  TGeoVolume* fcarbonfiberjunction;                                       // Carbon Fiber
+  TGeoHMatrix* fcarbonfiberjunctionmatrix[fgkcarbonfiberjunctionumber]; // Carbon Fiber Matrix
+  /////////////////////////////
+  // Carbon Fiber Lower Support
+  /////////////////////////////
+  static const Int_t fgkcarbonfiberlowersupportnumber = 2; // Carbon Fiber Lower Support Number
+  TGeoVolume* fcarbonfiberlowersupport[fgkcarbonfiberlowersupportnumber]; // Carbon Fiber Lower Support 
+  TGeoTranslation* fcarbonfiberlowersupportrans[fgkcarbonfiberlowersupportnumber];// Carbon Fiber Lower Support Translation
+  /////////////////////////////
+  // SSD Sensor Support
+  /////////////////////////////
+  static const Int_t fgkvolumekind = 2; // volumekind = 0 : side ssd support
+                                                                               // volumekind = 1 : central ssd support 
+  static const Int_t fgkssdsensorsupportnumber = 3; // SSD Sensor Support Number
+  TGeoVolume** fssdsensorsupport[fgkvolumekind];    // SSD Sensor 
+  TGeoHMatrix* fssdsensorsupportmatrix[fgkssdsensorsupportnumber]; // SSD Sensor Matrix 
+  /////////////////////////////////////////////////////////////
+  // SSD Cooling Tube Support
+  /////////////////////////////////////////////////////////////
+  static const Int_t fgkcoolingtubesupportnumber = 2; // Cooling Tube Support Number
+  TGeoVolume* fcoolingtubesupport;                                       // Cooling Tube Support
+  TGeoHMatrix* fcoolingtubesupportmatrix[fgkcoolingtubesupportnumber]; // Cooling Tube Support Matrix 
+  /////////////////////////////////////////////////////////////
+  // SSD Hybrid
+  /////////////////////////////////////////////////////////////
+  static const Int_t fgkhybridcompnumber = 3;  // Hybrid number
+  TGeoVolume* fssdhybridcomponent[fgkhybridcompnumber]; // Hybrid Components
+  TGeoHMatrix* fhybridmatrix;          // Hybrid Matrix
+  /////////////////////////////////////////////////////////////
+  // SSD Cooling Block System
+  /////////////////////////////////////////////////////////////
+  static const Int_t fgkcoolingblocknumber = 4; // Cooling Block Number
+  TGeoVolume* fssdcoolingblocksystem;  // Cooling Block 
+  TGeoHMatrix* fcoolingblocksystematrix;  // Cooling Block Matrix 
+  TGeoHMatrix* fcoolingblockmatrix[fgkcoolingblocknumber];  // Cooling System Matrix
+  /////////////////////////////////////////////////////////////
+  // SSD Flex  
+  /////////////////////////////////////////////////////////////
+  static const Int_t fgkflexnumber = 2; // Flex Number 
+  TGeoVolume* fssdstiffenerflex;               // Stiffener Flex
+  TGeoVolume* fssdendflex;                             // End flex
+  TGeoHMatrix* fstiffenerflexmatrix[fgkflexnumber]; // Stiffener Flex Matrix
+  TGeoHMatrix* fendflexmatrix[fgkflexnumber];       // End Flex Matrix
+  /////////////////////////////////////////
+  // Cooling Tube
+  /////////////////////////////////////////
+  TGeoHMatrix* fcoolingtubematrix[2];  // Cooling Tube Matrix
+  TGeoVolume* fcoolingtube;                    // Ladder Cooling Tube 
+  static const Int_t fgkendladdercoolingtubenumber = 2;                // End Ladder Cooling Tube Number       
+  TGeoVolume* fendladdercoolingtube[fgkendladdercoolingtubenumber];    // End Ladder Cooling Tube
+  TGeoHMatrix* fendladdercoolingtubematrix[fgkendladdercoolingtubenumber][2];  //End ladder cooling tube matrix
+  /////////////////////////////////////////
+  // End Ladder Components
+  /////////////////////////////////////////
+  TGeoVolumeAssembly* fendladdersegment[2];  // End Ladder Segment 
+  TGeoHMatrix** fendladdersegmentmatrix[2];  // End Ladder Matrix
+  /////////////////////////////////////////////////////////////
+  // End Ladder SSD Cooling Tube Support 
+  /////////////////////////////////////////////////////////////
+  TGeoHMatrix*** fendladdercoolingtubesupportmatrix; //End ladder cooling tube support matrix
+  ///////////////////////////////////
+  // End Ladder Carbon Fiber Junction
+  ///////////////////////////////////
+  static const Int_t fgkendlabbercarbonfiberjunctionumber = 2; // End Ladder Carbon fiber Junction Number
+  TGeoVolume** fendladdercarbonfiberjunction[fgkendlabbercarbonfiberjunctionumber]; // End Ladder Carbon fiber Junction Volumes
+  static const Int_t fgkendladdercabonfiberjunctionmatrixnumber = 3; // End Ladder Carbon fiber Junction Matrix Number
+  TGeoHMatrix** fendladdercarbonfiberjunctionmatrix[fgkendlabbercarbonfiberjunctionumber]; // End Ladder Carbon fiber Junction Matrix 
+  ///////////////////////////////////
+  // End Ladder Carbon Fiber Support
+  ///////////////////////////////////
+  static const Int_t fgkendladdercarbonfibermatrixnumber = 2; // End Ladder Carbon fiber Matrix Number
+  TGeoHMatrix** fendladdercarbonfibermatrix[fgkendladdercarbonfibermatrixnumber]; // End Ladder Carbon fiber Matrix 
+  ///////////////////////////////////
+  // End Ladder SSD Mounting Block
+  ///////////////////////////////////
+  static const Int_t fgkendladdermountingblocknumber = 2; // Mounting Block Number   
+  TGeoVolume* fendladdermountingblock;                                   // Mounting Block
+  TGeoVolume* fendladdermountingblockclip;                // Mounting Block Clip
+  TGeoCombiTrans* fendladdermountingblockcombitrans[fgkendladdermountingblocknumber]; // End Ladder Mounting Block CombiTrans
+  TGeoHMatrix** fendladdermountingblockclipmatrix[fgkendladdermountingblocknumber]; // End Ladder Mounting Block Clip HMatrix
+  ///////////////////////////////////
+  // End Ladder Lower Support
+  ///////////////////////////////////
+  static const Int_t fgkendladderlowersuppnumber = 2; // End Ladder Lower Support Number
+  TGeoTranslation* fendladderlowersupptrans[fgkendladderlowersuppnumber+1]; // End Ladder Lower Support Translations
   /////////////////////////////////////////////////////////////////////////
   // LadderCables 
   /////////////////////////////////////////////////////////////////////////
-  void SetLadderCableCombiTransMatrix(Int_t);
-  TGeoCombiTrans *LadderCableCombiTransMatrix[4];
+  static const Int_t fgkladdercablematrixnumber = 4; // Number of TGeoCombiTrans 
+                                                     // for positioning Ladder Cable volumes  
+  static const Int_t fgkladdercablesnumber = 2;                  // Number of Ladder Cables Layers
+  TGeoHMatrix **fladdercablematrix[fgkladdercablesnumber]; // TGeoCombiTrans for positioning
+                                                           // Ladder Cables volumes
+  ///////////////////////////////////
+  // Ladder Segment
+  ///////////////////////////////////
+  static const Int_t fgkladdersegmentnumber = 2; // Ladder Segment Kinds Number
+  TGeoVolumeAssembly* fladdersegment[fgkladdersegmentnumber]; // Ladder Segment
+  ///////////////////////////////////
+  // Ladder 
+  ///////////////////////////////////
+  static const Int_t fgkladdernumber = 2;                    // Ladder Number 
+  TGeoVolume* fladder[fgkladdernumber];                              //fladder[0]: ladder of Layer 5
+                                                                                                     //fladder[1]: ladder of Layer 6
+//  TGeoVolumeAssembly* fladder[fgkladdernumber];
+  TGeoHMatrix** fladdermatrix[fgkladdernumber];       // Ladder Matrix
+  ///////////////////////////////////
+  // SSD Sensor
+  ///////////////////////////////////
+  TGeoVolume* fSSDSensor5;  // Layer 5 SSD Sensor
+  TGeoVolume* fSSDSensor6;  // Layer 6 SSD Sensor
+  TGeoHMatrix** fssdsensormatrix[fgkladdernumber]; // SSD Sensor Matrix
+  ///////////////////////////////////
+  // SSD Layer
+  ///////////////////////////////////
+  static const Int_t fgklayernumber = 2; // Layer Number
+  TGeoVolumeAssembly* fSSDLayer5;               // SSD Layer 5
+  TGeoVolumeAssembly* fSSDLayer6;           // SSD Layer 6
+  TGeoHMatrix** flayermatrix[fgklayernumber]; // Layer Transformations
   /////////////////////////////////////////////////////////////////////////
   // Mother Volume 
   /////////////////////////////////////////////////////////////////////////
-  TGeoVolume *fMotherVol;  
-  TGeoVolume* GetMotherVolume() const { return fMotherVol;};
+  TGeoVolume *fMotherVol;                                    // Mother volume for ITS Layer5 and Layer6   
+  TGeoVolume* GetMotherVolume() const { return fMotherVol;}; // Method returning Mother Volume
+  /////////////////////////////////////////////////////////////////////////
+  // Ladder Support 
+  /////////////////////////////////////////////////////////////////////////
+  TGeoVolume* fLay5LadderSupport[2]; // Up and Down parts of Layer5 Ladder Support
+  TGeoVolume* fLay6LadderSupport[2]; // Up and Down parts of Layer6 Ladder Support
+  TGeoVolumeAssembly* fLay5LadderSupportRing; // Layer5 Ladder Support Ring
+  TGeoVolumeAssembly* fLay6LadderSupportRing; // Layer6 Ladder Support Ring
+  /////////////////////////////////////////////////////////////////////////
+  // End Cap Support + End Cap Assembly
+  /////////////////////////////////////////////////////////////////////////
+  TGeoVolume** fgkEndCapSupportSystem; // End Cap Support + End Cap Assembly
+  /////////////////////////////////////////////////////////////////////////
+  // SSD Cone
+  /////////////////////////////////////////////////////////////////////////
+  TGeoVolumeAssembly*fSSDCone;  // SSD Cone  
   /////////////////////////////////////////////////////////////////////////
   // Color Display 
   /////////////////////////////////////////////////////////////////////////
-  Int_t fColorCarbonFiber;   
-  Int_t fColorRyton;         
-  Int_t fColorPhynox;        
-  Int_t fColorSilicon;       
-  Int_t fColorAl;   
-  Int_t fColorKapton;         
-  Int_t fColorPolyhamide;    
-  Int_t fColorStiffener;
-  Int_t fColorEpoxy;
+  Int_t fColorCarbonFiber;    //  display colors
+  Int_t fColorRyton;          //  ===
+  Int_t fColorPhynox;         //  ===
+  Int_t fColorSilicon;        //  ===
+  Int_t fColorAl;             //  ===
+  Int_t fColorNiSn;           //  ===
+  Int_t fColorKapton;         //  ===
+  Int_t fColorPolyhamide;     //  ===
+  Int_t fColorStiffener;      //  ===
+  Int_t fColorEpoxy;          //  ===
+  Int_t fColorWater;             //  ===
+  Int_t fColorG10;            //  ===
+ClassDef(AliITSv11GeometrySSD, 5)     // ITS v11 SSD geometry
 };
 #endif
-