]> git.uio.no Git - u/mrichter/AliRoot.git/blobdiff - ITS/AliITSv11GeometrySSD.cxx
Fixing segfault
[u/mrichter/AliRoot.git] / ITS / AliITSv11GeometrySSD.cxx
index 66155eb72ccd0325843a62fdc63e0cc8cdf426d6..62486d399fa8bb664aa2b308681420b2e7091205 100644 (file)
@@ -29,6 +29,7 @@
 #include "TList.h"
 #include "TGeoMatrix.h"
 #include "TGeoCompositeShape.h"
+#include "TGeoBoolNode.h"
 #include "TGeoTube.h"
 #include "TGeoBBox.h"
 #include "TGeoXtru.h"
@@ -37,6 +38,7 @@
 #include "TGeoPcon.h"
 #include "TRotation.h"
 #include "AliITSv11GeometrySSD.h"
+#include "Riostream.h"
 /////////////////////////////////////////////////////////////////////////////////
 // Names of the Sensitive Volumes of Layer 5 and Layer 6
 /////////////////////////////////////////////////////////////////////////////////
@@ -48,9 +50,10 @@ const char* AliITSv11GeometrySSD::fgSSDsensitiveVolName6 = "ITSssdSensitivL6";
 // Variable for Vertical Disalignement of Modules
 /////////////////////////////////////////////////////////////////////////////////
 const Double_t AliITSv11GeometrySSD::fgkSSDTolerance = 0.0001*fgkmm;
-//const Double_t AliITSv11GeometrySSD::fgkSSDTolerance = 1.*fgkmm;
-const Double_t AliITSv11GeometrySSD::fgkSSDModuleVerticalDisalignment = 0.*fgkmm;
-const Double_t AliITSv11GeometrySSD::fgkSSDModuleVerticalDisalignment2 = 0.2*fgkmm;
+const Double_t AliITSv11GeometrySSD::fgkSSDModuleVerticalDisalignment = 0.2*fgkmm;
+const Double_t AliITSv11GeometrySSD::fgkSSDModuleSideDisalignment     = 0.2*fgkmm;
+// For ladders:
+const Double_t AliITSv11GeometrySSD::fgkSSDLadderVerticalDisalignment = 0.520*fgkmm;
 /////////////////////////////////////////////////////////////////////////////////
 // Layer5 (lengths are in mm and angles in degrees)
 /////////////////////////////////////////////////////////////////////////////////
@@ -174,8 +177,8 @@ const Double_t AliITSv11GeometrySSD::fgkSSDSensorSideSupportLength                 =
 const Double_t AliITSv11GeometrySSD::fgkSSDSensorSideSupportWidth          =  
                                                                                                                                         2.000*fgkmm;
 const Double_t AliITSv11GeometrySSD::fgkSSDSensorSideSupportHeight[2]      =
-                                                                                                    { 4.620*fgkmm-fgkSSDModuleVerticalDisalignment2
-                                                                                                          5.180*fgkmm-fgkSSDModuleVerticalDisalignment2};
+                                                                                                    { 4.620*fgkmm-fgkSSDModuleVerticalDisalignment, 
+                                                                                                      5.220*fgkmm-fgkSSDModuleVerticalDisalignment};
 //const Double_t AliITSv11GeometrySSD::fgkSSDSensorSideSupportHeight[2]      =
 //                                                                                                  { 4.520*fgkmm, 5.130*fgkmm};
 const Double_t AliITSv11GeometrySSD::fgkSSDSensorSideSupportThickness[2]   = 
@@ -207,12 +210,12 @@ const Double_t AliITSv11GeometrySSD::fgkSSDChipCablesHeight[4]   =
                                  {  0.014*fgkmm,  0.010*fgkmm, fgkSSDModuleCoolingBlockToSensor
                                                                  -  (fgkSSDSensorSideSupportHeight[1]
                                                                  -   fgkSSDSensorSideSupportHeight[0])
-                                                                 -   fgkSSDModuleVerticalDisalignment
+                                                                 -   fgkSSDModuleVerticalDisalignment
                                                                  -   fgkSSDCoolingBlockHoleCenter
                                                                  -   fgkSSDStiffenerHeight
                                                                  -   fgkSSDChipHeight-fgkSSDSensorHeight,
                                                                          fgkSSDModuleCoolingBlockToSensor
-                                                                 -   fgkSSDModuleVerticalDisalignment2 
+                                                                 -   fgkSSDModuleVerticalDisalignment  
                                                                  -   fgkSSDCoolingBlockHoleCenter
                                                                  -       fgkSSDStiffenerHeight
                                                                  -   fgkSSDChipHeight-fgkSSDSensorHeight};
@@ -258,6 +261,7 @@ const Double_t AliITSv11GeometrySSD::fgkCarbonFiberSupportYAxisLength
 /////////////////////////////////////////////////////////////////////////////////
 // Carbon Fiber Lower Support Parameters (lengths are in mm)
 /////////////////////////////////////////////////////////////////////////////////
+const Double_t AliITSv11GeometrySSD::fgkLowerSupportToSensorZ           = 11.575*fgkmm;  
 const Double_t AliITSv11GeometrySSD::fgkCarbonFiberLowerSupportWidth             
                                                                                                                                          =  0.950*fgkmm;
 const Double_t AliITSv11GeometrySSD::fgkCarbonFiberLowerSupportLowerLenght       
@@ -343,7 +347,7 @@ const Double_t AliITSv11GeometrySSD::fgkSSDMountingBlockHoleRadius           =
                                                                                                                                          1.0*fgkmm;
 const Double_t AliITSv11GeometrySSD::fgkSSDMountingBlockScrewHoleEdge        =   
                                                                                                                                          6.0*fgkmm;
-const Double_t AliITSv11GeometrySSD::fgkSSDMountingBlockScrewHoleHeigth      =  
+const Double_t AliITSv11GeometrySSD::fgkSSDMountingBlockScrewHoleHeight      =  
                                                                                                                                          4.0*fgkmm;
 const Double_t AliITSv11GeometrySSD::fgkSSDMountingBlockScrewHoleRadius[2]   =
                                                          {  1.5*fgkmm,fgkSSDMountingBlockScrewHoleEdge/6.};
@@ -364,27 +368,23 @@ const Double_t AliITSv11GeometrySSD::fgkMountingBlockSupportRadius[2] = {fgkSSDL
                                                                                                  -  fgkSSDMountingBlockHeight[1]
                                                                                                  +  0.5*fgkCoolingTubeSupportHeight
                                                                                                  +      fgkSSDModuleCoolingBlockToSensor
-                                                                                                 +  fgkSSDModuleVerticalDisalignment
                                                                                                  -      fgkMountingBlockSupportDownHeight,
                                                                                                         fgkSSDLay6RadiusMin
                                                                                                  -  fgkSSDMountingBlockHeight[1]
                                                                                                  +  0.5*fgkCoolingTubeSupportHeight
                                                                                                  +      fgkSSDModuleCoolingBlockToSensor
-                                                                                                 +  fgkSSDModuleVerticalDisalignment
                                                                                                  -      fgkMountingBlockSupportDownHeight}; 
 const Double_t AliITSv11GeometrySSD::fgkMountingBlockSupportUpHeight[2] = {fgkSSDLay5RadiusMax
                                                                                                    -  fgkSSDMountingBlockHeight[1]
                                                                                                    +  0.5*fgkCoolingTubeSupportHeight
                                                                                                    +  fgkSSDModuleCoolingBlockToSensor
-                                                                                                       +  fgkSSDModuleVerticalDisalignment
                                                                                                        -  fgkMountingBlockSupportRadius[0],
                                                                                                           fgkSSDLay6RadiusMax
                                                                                                    -  fgkSSDMountingBlockHeight[1]
                                                                                                    +  0.5*fgkCoolingTubeSupportHeight
                                                                                                    +  fgkSSDModuleCoolingBlockToSensor
-                                                                                                       +  fgkSSDModuleVerticalDisalignment
                                                                                                        -  fgkMountingBlockSupportRadius[1]};
-const Double_t AliITSv11GeometrySSD::fgkLadderSupportHeigth = 10.0*fgkmm; // To be verified
+const Double_t AliITSv11GeometrySSD::fgkLadderSupportHeight = 10.0*fgkmm; // To be verified
 const Double_t AliITSv11GeometrySSD::fgkLadderSupportRingLay5Position = 451.35*fgkmm;
 const Double_t AliITSv11GeometrySSD::fgkLadderSupportRingLay6Position = 510.00*fgkmm;
 /////////////////////////////////////////////////////////////////////////////////
@@ -537,7 +537,7 @@ const Double_t AliITSv11GeometrySSD::fgkSSDPatchPanel2RB26ITSDistance = 975.0*fg
 const Double_t AliITSv11GeometrySSD::fgkSSDPatchPanel2RB24ITSDistance = 1020.0*fgkmm;
 const Double_t AliITSv11GeometrySSD::fgkSSDPatchPanel2RB26Radius = 451.3*fgkmm;
 const Double_t AliITSv11GeometrySSD::fgkSSDPatchPanel2RB24Radius = 451.3*fgkmm;
-const Double_t AliITSv11GeometrySSD::fgkSSDPatchPanelHeigth = 87.5*fgkmm;
+const Double_t AliITSv11GeometrySSD::fgkSSDPatchPanelHeight = 87.5*fgkmm;
 const Double_t AliITSv11GeometrySSD::fgkSSDCableMaterialBudgetHeight = 20.0*fgkmm;
 //const Double_t AliITSv11GeometrySSD::fgkSSDPatchPanel2RB26Radius = fgkSSDPConeExternalRadius;
 //const Double_t AliITSv11GeometrySSD::fgkSSDPatchPanel2RB24Radius = fgkSSDPConeExternalRadius;
@@ -581,6 +581,7 @@ AliITSv11GeometrySSD::AliITSv11GeometrySSD():
   fcoolingblocksystematrix(),
   fssdstiffenerflex(),
   fssdendflex(),
+  fcoolingtube(0),
   fendladdercoolingtubesupportmatrix(),
   fendladdermountingblock(),
   fendladdermountingblockclip(),
@@ -647,6 +648,7 @@ AliITSv11GeometrySSD::AliITSv11GeometrySSD(const AliITSv11GeometrySSD &s):
   fcoolingblocksystematrix(s.fcoolingblocksystematrix),
   fssdstiffenerflex(s.fssdstiffenerflex),
   fssdendflex(s.fssdendflex),
+  fcoolingtube(s.fcoolingtube),
   fendladdercoolingtubesupportmatrix(s.fendladdercoolingtubesupportmatrix),
   fendladdermountingblock(s.fendladdermountingblock),
   fendladdermountingblockclip(s.fendladdermountingblockclip),
@@ -992,77 +994,24 @@ void AliITSv11GeometrySSD::CreateTransformationMatrices(){
   /////////////////////////////////////////////////////////////
   TGeoRotation* localcoolingtuberot = new TGeoRotation();      
   localcoolingtuberot->SetAngles(0.,90.,0.);
-  TGeoTranslation** localcoolingtubetrans[4];
-  TVector3** localcoolingtubevect[4];
-  for(Int_t i=0; i<4; i++){
-       localcoolingtubevect[i] = new TVector3*[2];
-       localcoolingtubetrans[i] = new TGeoTranslation*[2];
-       fcoolingtubematrix[i] = new TGeoHMatrix*[2];
-  }
-  localcoolingtubevect[0][0] = new TVector3(-0.5*(fgkCoolingTubeSeparation
+  TGeoTranslation* localcoolingtubetrans[2];
+  TVector3* localcoolingtubevect[2];
+
+  localcoolingtubevect[0] = new TVector3(-0.5*(fgkCoolingTubeSeparation
                                                  -fgkCarbonFiberTriangleLength),
-                                                 - (2.0*fgkSSDSensorLength-fgkSSDSensorOverlap)+
-                                                                fgkSSDModuleStiffenerPosition[1]+fgkSSDStiffenerWidth
-                                                 +      0.5*fgkSSDFlexHoleLength+2.*fgkCarbonFiberJunctionWidth
-                                                 -      0.5*(fgkCarbonFiberLowerSupportWidth
-                                                 +      fgkSSDSensorCenterSupportLength
-                                                 -      fgkSSDSensorCenterSupportThickness[0])+
-                                                        0.5*fgkSSDSensorLength-0.25*(fgkSSDSensorLength
-                                                 -  2.0*fgkSSDModuleStiffenerPosition[1]
-                                                 -      2.0*fgkSSDCoolingBlockWidth-fgkCoolingTubeSupportWidth)
-                                                 -  0.5*fgkCoolingTubeSupportWidth,
-                                                 -  0.5*fgkCoolingTubeSupportHeight);  
-  localcoolingtubevect[0][1] = new TVector3(localcoolingtubevect[0][0]->X(),
-                                                       localcoolingtubevect[0][0]->Y()+0.5*(fgkSSDSensorLength
-                                                 -  2.0*fgkSSDModuleStiffenerPosition[1]
-                                                 -      2.0*fgkSSDCoolingBlockWidth-fgkCoolingTubeSupportWidth)
-                                                 +  fgkCoolingTubeSupportWidth,
-                                                 localcoolingtubevect[0][0]->Z());     
-  localcoolingtubevect[1][0] = new TVector3(-localcoolingtubevect[0][0]->X()
-                                                        +                               fgkCarbonFiberTriangleLength,
-                                                                                        localcoolingtubevect[0][0]->Y(),
-                                                                                        localcoolingtubevect[0][0]->Z());
-  localcoolingtubevect[1][1] = new TVector3(-localcoolingtubevect[0][1]->X()
-                                                        +                               fgkCarbonFiberTriangleLength,
-                                                                                        localcoolingtubevect[0][1]->Y(),
-                                                                                        localcoolingtubevect[0][1]->Z());
-  localcoolingtubevect[2][0] = new TVector3(-0.5*(fgkCoolingTubeSeparation
-                                                 -     fgkCarbonFiberTriangleLength),
-                                                 - (2.0*fgkSSDSensorLength-fgkSSDSensorOverlap)+
-                                                                fgkSSDModuleStiffenerPosition[1]+fgkSSDStiffenerWidth
-                                                 +      0.5*fgkSSDFlexHoleLength+2.*fgkCarbonFiberJunctionWidth
-                                                 -      0.5*(fgkCarbonFiberLowerSupportWidth
-                                                 +      fgkSSDSensorCenterSupportLength
-                                                 -      fgkSSDSensorCenterSupportThickness[0])
-                                                 +  fgkSSDModuleStiffenerPosition[1]
-                                                 -  0.5*(fgkSSDModuleStiffenerPosition[1]-fgkSSDSensorOverlap),
+                                           fgkCarbonFiberJunctionWidth         // Y-coord is local Z, from sensor translation 
+                                           - fgkCarbonFiberLowerSupportWidth 
+                                           - fgkLowerSupportToSensorZ ,
                                                  -  0.5*fgkCoolingTubeSupportHeight);  
-  localcoolingtubevect[2][1] = new TVector3(-localcoolingtubevect[2][0]->X()
-                                                        +                               fgkCarbonFiberTriangleLength,
-                                                                                        localcoolingtubevect[2][0]->Y(),
-                                                                                        localcoolingtubevect[2][0]->Z());      
-  localcoolingtubevect[3][0] = new TVector3(-0.5*(fgkCoolingTubeSeparation
-                                                 -     fgkCarbonFiberTriangleLength),
-                                                 - (2.0*fgkSSDSensorLength-fgkSSDSensorOverlap)+
-                                                                fgkSSDModuleStiffenerPosition[1]+fgkSSDStiffenerWidth
-                                                 +      0.5*fgkSSDFlexHoleLength+2.*fgkCarbonFiberJunctionWidth
-                                                 -      0.5*(fgkCarbonFiberLowerSupportWidth
-                                                 +      fgkSSDSensorCenterSupportLength
-                                                 -      fgkSSDSensorCenterSupportThickness[0])
-                                                 +      fgkSSDSensorLength
-                                                 -      0.5*fgkSSDModuleStiffenerPosition[1],
-                                                 -  0.5*fgkCoolingTubeSupportHeight);  
-  localcoolingtubevect[3][1] = new TVector3(-localcoolingtubevect[3][0]->X()
-                                                 + fgkCarbonFiberTriangleLength,
-                                                       localcoolingtubevect[3][0]->Y(),
-                                                 - 0.5*fgkCoolingTubeSupportHeight);   
-  for(Int_t i=0; i<4; i++) 
+  localcoolingtubevect[1] = new TVector3( -localcoolingtubevect[0]->X()+fgkCarbonFiberTriangleLength,
+                                             localcoolingtubevect[0]->Y(),
+                                             localcoolingtubevect[0]->Z());
        for(Int_t j=0; j<2; j++){
-               localcoolingtubetrans[i][j] = 
-                       new TGeoTranslation(localcoolingtubevect[i][j]->X(),
-                                                               localcoolingtubevect[i][j]->Y(),
-                                                               localcoolingtubevect[i][j]->Z());
-               fcoolingtubematrix[i][j] = new TGeoHMatrix((*localcoolingtubetrans[i][j])
+               localcoolingtubetrans[j] = 
+                       new TGeoTranslation(localcoolingtubevect[j]->X(),
+                                                               localcoolingtubevect[j]->Y(),
+                                                               localcoolingtubevect[j]->Z());
+               fcoolingtubematrix[j] = new TGeoHMatrix((*localcoolingtubetrans[j])
                                                          *                                     (*localcoolingtuberot));
        }
   /////////////////////////////////////////////////////////////
@@ -1071,110 +1020,38 @@ void AliITSv11GeometrySSD::CreateTransformationMatrices(){
   TGeoRotation* localendlladdercoolingtuberot = new TGeoRotation();    
   localendlladdercoolingtuberot->SetAngles(0.,90.,0.);
   TGeoTranslation** localendlladdercoolingtubetrans[2];
-  localendlladdercoolingtubetrans[0] = new TGeoTranslation*[6];
-  localendlladdercoolingtubetrans[1] = new TGeoTranslation*[4];
+  localendlladdercoolingtubetrans[0] = new TGeoTranslation*[2];
+  localendlladdercoolingtubetrans[1] = new TGeoTranslation*[2];
   for(Int_t i=0; i<2; i++)     
-       for(Int_t j=0; j<(i==0?6:4); j++)       
+       for(Int_t j=0; j<2; j++)        
                localendlladdercoolingtubetrans[i][j] = new TGeoTranslation();
+
+  Double_t sensZshift = 0.5*fgkCarbonFiberJunctionWidth - fgkCarbonFiberLowerSupportWidth - fgkLowerSupportToSensorZ;
   localendlladdercoolingtubetrans[0][0]->SetTranslation(-(fgkCoolingTubeSupportLength
                                                                        -        fgkCoolingTubeSupportRmax)
                                                                        +        fgkCarbonFiberJunctionLength,
-                                                                         0.5*(fgkEndLadderMountingBlockPosition[0]
-                                                                       -    fgkendladdercoolingsupportdistance[0]),
+                                                       0.5*(fgkEndLadderCarbonFiberLowerJunctionLength[0]+sensZshift),
                                                                        - 0.5*fgkCoolingTubeSupportHeight);
   localendlladdercoolingtubetrans[0][1]->SetTranslation((fgkCoolingTubeSupportLength
                                                                        -        fgkCoolingTubeSupportRmax)
                                                                        -        fgkCarbonFiberJunctionLength
                                                                        +    fgkCarbonFiberTriangleLength,
-                                                                         0.5*(fgkEndLadderMountingBlockPosition[0]
-                                                                       -    fgkendladdercoolingsupportdistance[0]),
+                                                       0.5*(fgkEndLadderCarbonFiberLowerJunctionLength[0]+sensZshift),
                                                                        - 0.5*fgkCoolingTubeSupportHeight);
-  localendlladdercoolingtubetrans[0][2]->SetTranslation(-(fgkCoolingTubeSupportLength
-                                                                       -   fgkCoolingTubeSupportRmax)
-                                                                       +       fgkCarbonFiberJunctionLength,
-                                                                          fgkEndLadderMountingBlockPosition[0]
-                                                                       -   fgkendladdercoolingsupportdistance[0]
-                                                 +                0.5*(fgkendladdercoolingsupportdistance[0]
-                                                 +                             fgkendladdercoolingsupportdistance[1]
-                                                 +                             fgkCoolingTubeSupportWidth),
-                                                                       - 0.5*fgkCoolingTubeSupportHeight);     
-  localendlladdercoolingtubetrans[0][3]->SetTranslation((fgkCoolingTubeSupportLength
-                                                                       -        fgkCoolingTubeSupportRmax)
-                                                                       -        fgkCarbonFiberJunctionLength
-                                                                       +    fgkCarbonFiberTriangleLength,
-                                                                          fgkEndLadderMountingBlockPosition[0]
-                                                                       -   fgkendladdercoolingsupportdistance[0]
-                                                 +                0.5*(fgkendladdercoolingsupportdistance[0]
-                                                 +                             fgkendladdercoolingsupportdistance[1]
-                                                 +                             fgkCoolingTubeSupportWidth),
-                                                                       - 0.5*fgkCoolingTubeSupportHeight);     
-  localendlladdercoolingtubetrans[0][4]->SetTranslation(-(fgkCoolingTubeSupportLength
-                                                                       -   fgkCoolingTubeSupportRmax)
-                                                                       +       fgkCarbonFiberJunctionLength,
-                                                                       fgkEndLadderCarbonFiberLowerJunctionLength[0]
-                                                 - 0.50 * (fgkEndLadderCarbonFiberLowerJunctionLength[0]
-                                                 -                     fgkEndLadderMountingBlockPosition[0]
-                                                 -                     fgkendladdercoolingsupportdistance[1]           
-                                                 -                     fgkCoolingTubeSupportWidth),
-                                                                       - 0.5*fgkCoolingTubeSupportHeight);      
-  localendlladdercoolingtubetrans[0][5]->SetTranslation((fgkCoolingTubeSupportLength
-                                                                       -        fgkCoolingTubeSupportRmax)
-                                                                       -        fgkCarbonFiberJunctionLength
-                                                                       +    fgkCarbonFiberTriangleLength,
-                                                                       fgkEndLadderCarbonFiberLowerJunctionLength[0]
-                                                 - 0.50 * (fgkEndLadderCarbonFiberLowerJunctionLength[0]
-                                                 -                     fgkEndLadderMountingBlockPosition[0]
-                                                 -                     fgkendladdercoolingsupportdistance[1]           
-                                                 -                     fgkCoolingTubeSupportWidth),
-                                                                       - 0.5*fgkCoolingTubeSupportHeight);      
+
   localendlladdercoolingtubetrans[1][0]->SetTranslation(-(fgkCoolingTubeSupportLength
-                                                                       -   fgkCoolingTubeSupportRmax)
-                                                                       +       fgkCarbonFiberJunctionLength,
-                                                       - 0.50 * (fgkMountingBlockToSensorSupport
-                                                       - 0.50 * (fgkSSDFlexHoleWidth-fgkSSDSensorSideSupportWidth)
-                                                       -                 fgkSSDStiffenerWidth-fgkSSDModuleStiffenerPosition[1]
-                                                       +                 fgkSSDSensorOverlap
-                                                       +                 fgkEndLadderCarbonFiberLowerJunctionLength[1]
-                                                       -                 fgkendladdercoolingsupportdistance[2]
-                                                       -                 fgkEndLadderMountingBlockPosition[1]
-                                                       -                 fgkCoolingTubeSupportWidth)
-                                                       +                 fgkEndLadderCarbonFiberLowerJunctionLength[1]
-                                                       -                 fgkendladdercoolingsupportdistance[2]
-                                                       -                 fgkCoolingTubeSupportWidth,
+                                                         -   fgkCoolingTubeSupportRmax)
+                                                       +       fgkCarbonFiberJunctionLength,
+                                                       0.5*(fgkEndLadderCarbonFiberLowerJunctionLength[1]-sensZshift),
                                                  -             0.5*fgkCoolingTubeSupportHeight);        
   localendlladdercoolingtubetrans[1][1]->SetTranslation((fgkCoolingTubeSupportLength
                                                  -      fgkCoolingTubeSupportRmax)
                                                  -      fgkCarbonFiberJunctionLength
                                                  +    fgkCarbonFiberTriangleLength,
-                                                 - 0.50 * (fgkMountingBlockToSensorSupport
-                                                       - 0.50 * (fgkSSDFlexHoleWidth-fgkSSDSensorSideSupportWidth)
-                                                       -                 fgkSSDStiffenerWidth-fgkSSDModuleStiffenerPosition[1]
-                                                       +                 fgkSSDSensorOverlap
-                                                       +                 fgkEndLadderCarbonFiberLowerJunctionLength[1]
-                                                       -                 fgkendladdercoolingsupportdistance[2]
-                                                       -                 fgkEndLadderMountingBlockPosition[1]
-                                                       -                 fgkCoolingTubeSupportWidth)
-                                                       +                 fgkEndLadderCarbonFiberLowerJunctionLength[1]
-                                                       -                 fgkendladdercoolingsupportdistance[2]
-                                                       -                 fgkCoolingTubeSupportWidth,
+                                                       0.5*(fgkEndLadderCarbonFiberLowerJunctionLength[1]-sensZshift),
                                                  -             0.5*fgkCoolingTubeSupportHeight);        
-  localendlladdercoolingtubetrans[1][2]->SetTranslation(-(fgkCoolingTubeSupportLength
-                                                                       -   fgkCoolingTubeSupportRmax)
-                                                                       +       fgkCarbonFiberJunctionLength,
-                                                                               fgkEndLadderCarbonFiberLowerJunctionLength[1]
-                                                                       - 0.5*fgkendladdercoolingsupportdistance[2],
-                                                                       - 0.5*fgkCoolingTubeSupportHeight);      
-  localendlladdercoolingtubetrans[1][3]->SetTranslation((fgkCoolingTubeSupportLength
-                                                                       -        fgkCoolingTubeSupportRmax)
-                                                                       -        fgkCarbonFiberJunctionLength
-                                                                       +    fgkCarbonFiberTriangleLength,
-                                                                               fgkEndLadderCarbonFiberLowerJunctionLength[1]
-                                                                       - 0.5*fgkendladdercoolingsupportdistance[2],
-                                                                       - 0.5*fgkCoolingTubeSupportHeight);      
-  fendladdercoolingtubematrix[0] = new TGeoHMatrix*[6]; 
-  fendladdercoolingtubematrix[1] = new TGeoHMatrix*[4]; 
   for(Int_t i=0; i<2; i++)
-       for(Int_t j=0; j<(i==0?6:4); j++){
+       for(Int_t j=0; j<2; j++){
                fendladdercoolingtubematrix[i][j] = new TGeoHMatrix(*localendlladdercoolingtuberot);
                fendladdercoolingtubematrix[i][j]->MultiplyLeft(localendlladdercoolingtubetrans[i][j]); 
        }
@@ -1198,7 +1075,7 @@ void AliITSv11GeometrySSD::CreateTransformationMatrices(){
                       -       fgkSSDSensorCenterSupportThickness[0]),
                       -      (fgkSSDModuleCoolingBlockToSensor+0.5*fgkCoolingTubeSupportHeight
                       -       fgkSSDSensorHeight-fgkSSDChipCablesHeight[3]-fgkSSDChipHeight
-                                         -       fgkSSDModuleVerticalDisalignment2)); 
+                                         -       fgkSSDModuleVerticalDisalignment)); 
   fhybridmatrix = new TGeoHMatrix();
   for(Int_t i=0; i<khybridmatrixnumber; i++) fhybridmatrix->MultiplyLeft(localhybridtrans[i]);
   /////////////////////////////////////////////////////////////
@@ -1262,7 +1139,8 @@ void AliITSv11GeometrySSD::CreateTransformationMatrices(){
   Double_t ssdflexboxlength = fgkSSDFlexFullLength-2.*fgkSSDFlexAngle
                             * TMath::DegToRad()*ssdflexradiusmax
                                                               - fgkSSDFlexLength[2]-TMath::Pi()
-                                                              * fgkSSDStiffenerHeight-fgkSSDFlexLength[0];
+                                                              * fgkSSDStiffenerHeight-fgkSSDFlexLength[0]
+                                                                                  - 0.1*fgkSSDFlexFullLength;
   Double_t trans = ssdflexboxlength*CosD(2.*fgkSSDFlexAngle)
                             + (ssdflexradiusmax-fgkSSDStiffenerHeight)*SinD(2.*fgkSSDFlexAngle)
                             +      fgkSSDFlexLength[2];
@@ -1444,6 +1322,8 @@ void AliITSv11GeometrySSD::CreateTransformationMatrices(){
   localladdercablerot[1]->SetAngles(90.,60.,-90.);
   localladdercablerot[2]->SetRotation((*localladdercablerot[1])
                                                 *                        (*localladdercablerot[0]));
+  //TGeoRotation* localladdercablerot = new TGeoRotation();    
+  //localladdercablerot->SetAngles(90.,0.,0.);
   ////////////////////////////////////////////
   // LocalLadderCableCombiTransMatrix
   ////////////////////////////////////////////
@@ -1571,25 +1451,20 @@ void AliITSv11GeometrySSD::CreateTransformationMatrices(){
   TGeoTranslation* localssdsensortrans[2];
   for(Int_t i=0; i<2; i++) localssdsensortrans[i] = new TGeoTranslation();
   localssdsensortrans[0]->SetTranslation(0.5*fgkCarbonFiberTriangleLength,
-                                         -             (2.*fgkSSDSensorLength-fgkSSDSensorOverlap)+
-                              fgkSSDModuleStiffenerPosition[1]+fgkSSDStiffenerWidth
-                      +                0.5*fgkSSDFlexHoleLength+2.*fgkCarbonFiberJunctionWidth
-                      -                0.5*(fgkCarbonFiberLowerSupportWidth+fgkSSDSensorCenterSupportLength
-                      -       fgkSSDSensorCenterSupportThickness[0])+0.5*fgkSSDSensorLength,
+                                        fgkCarbonFiberJunctionWidth 
+                                        - fgkCarbonFiberLowerSupportWidth 
+                                        - fgkLowerSupportToSensorZ,
                                                        0.5*fgkSSDSensorHeight-0.5*fgkCoolingTubeSupportHeight
-                                         -             fgkSSDModuleCoolingBlockToSensor-0.5*fgkSSDModuleVerticalDisalignment
+                                         -             fgkSSDModuleCoolingBlockToSensor
                                          +    (fgkSSDSensorSideSupportHeight[1]
-                                         -             fgkSSDSensorSideSupportHeight[0])
-                                         +     0.5*fgkSSDModuleVerticalDisalignment2);
+                                         -             fgkSSDSensorSideSupportHeight[0]));
   localssdsensortrans[1]->SetTranslation(0.5*fgkCarbonFiberTriangleLength,
-                                         -        (2.*fgkSSDSensorLength-fgkSSDSensorOverlap)+
-                              fgkSSDModuleStiffenerPosition[1]+fgkSSDStiffenerWidth
-                      +                0.5*fgkSSDFlexHoleLength+2.*fgkCarbonFiberJunctionWidth
-                      -                0.5*(fgkCarbonFiberLowerSupportWidth+fgkSSDSensorCenterSupportLength
-                      -       fgkSSDSensorCenterSupportThickness[0])+0.5*fgkSSDSensorLength,
+                                        fgkCarbonFiberJunctionWidth 
+                                        - fgkCarbonFiberLowerSupportWidth 
+                                        - fgkLowerSupportToSensorZ,
                                                    0.5*fgkSSDSensorHeight-0.5*fgkCoolingTubeSupportHeight
-                                                       -fgkSSDModuleCoolingBlockToSensor-0.5*fgkSSDModuleVerticalDisalignment
-                                               +       0.5*fgkSSDModuleVerticalDisalignment2);
+                                                       -fgkSSDModuleCoolingBlockToSensor);
+
   for(Int_t i=0; i<2; i++) 
        localssdsensorcombitrans[i] = new TGeoCombiTrans(*localssdsensortrans[i],
                                                                                                         *localssdsensorrot);   
@@ -1722,13 +1597,9 @@ void AliITSv11GeometrySSD::CreateTransformationMatrices(){
        delete localcoolingtubesupportrot[i];
        delete localcoolingtubesupportrans[i];
   }
-  for(Int_t i=0; i<4; i++){
-       for(Int_t j=0; j<2; j++){
-               delete localcoolingtubevect[i][j];
-               delete localcoolingtubetrans[i][j];
-       }
-       delete [] localcoolingtubevect[i];
-       delete [] localcoolingtubetrans[i];
+  for(Int_t j=0; j<2; j++){
+    delete localcoolingtubevect[j];
+    delete localcoolingtubetrans[j];
   }
  delete endladdermountingblockrot;
  for(Int_t i=0; i<khybridmatrixnumber; i++) delete localhybridtrans[i];
@@ -1740,8 +1611,8 @@ void AliITSv11GeometrySSD::CreateTransformationMatrices(){
  }
  delete localendlladdercoolingtuberot;
  for(Int_t i=0; i<2; i++){
-       for(Int_t j=0; j<(i==0?6:4); j++)
-               delete localendlladdercoolingtubetrans[i][j];
+       for(Int_t j=0; j<2; j++)
+         delete localendlladdercoolingtubetrans[i][j];
        delete [] localendlladdercoolingtubetrans[i];
   }
 
@@ -1858,7 +1729,7 @@ void AliITSv11GeometrySSD::CreateBasicObjects(){
   /////////////////////////////////////////////////////////////
   // SSD Cooling Tube Support
   /////////////////////////////////////////////////////////////
-  Int_t edgesnumber = 16;
+  Int_t edgesnumber = 3;
   fcoolingtubesupport = GetCoolingTubeSupport(edgesnumber);      
   /////////////////////////////////////////////////////////////
   // SSD Hybrid
@@ -1873,12 +1744,7 @@ void AliITSv11GeometrySSD::CreateBasicObjects(){
    /////////////////////////////////////////////////////////////
   // SSD Cooling Tube
   /////////////////////////////////////////////////////////////
-  TList* coolingtubelist = GetCoolingTubeList();       
-  for(Int_t i=0; i<fgkcoolingtubenumber; i++)  
-       fcoolingtube[i] = (TGeoVolume*)coolingtubelist->At(i);
-  for(Int_t i=0; i<fgkendladdercoolingtubenumber; i++) 
-       fendladdercoolingtube[i] = 
-                       (TGeoVolume*)coolingtubelist->At(fgkcoolingtubenumber+i);
+  CreateCoolingTubes();
   /////////////////////////////////////////////////////////////
   // SSD Flex  
   /////////////////////////////////////////////////////////////
@@ -2024,11 +1890,11 @@ TList* AliITSv11GeometrySSD::GetCarbonFiberSupportList(){
   Double_t* param = new Double_t[4]; 
   param[0] = 0., param[1] = 1., param[2] = 0., param[3] = -symmetryplaneposition;
   for(Int_t j=0; j<kvertexnumber; j++) vertexposition[1][j] = 
-                                 new TVector3((GetReflection(vertexposition[0][j],param))->X(),
-                                                         (GetReflection(vertexposition[0][j],param))->Y());
-  char* carbonfibersupportshapename[kshapesnumber] = 
+    new TVector3((GetReflection(vertexposition[0][j],param))->X(),
+                (GetReflection(vertexposition[0][j],param))->Y());
+  const char* carbonfibersupportshapename[kshapesnumber] = 
                                                {"CarbonFiberSupportShape1","CarbonFiberSupportShape2"};
-  char* carbonfibersupportname[kshapesnumber] = 
+  const char* carbonfibersupportname[kshapesnumber] = 
                                                {"CarbonFiberSupport1","CarbonFiberSupport2"};
   TGeoArb8* carbonfibersupportshape[kshapesnumber]; 
   TGeoVolume* carbonfibersupport[kshapesnumber];
@@ -2065,8 +1931,8 @@ TGeoVolume* AliITSv11GeometrySSD::GetCarbonFiberJunction(Double_t width){
   /////////////////////////////////////////////////////////////
   const Int_t kvertexnumber = 6;
   TGeoXtru* carbonfiberjunctionshape = new TGeoXtru(2);
-  Double_t reflectionparam[3] = {TMath::Tan(fgkCarbonFiberJunctionAngle[0]
-                                                         *  TMath::DegToRad()),-1.,0.};
+  Double_t reflectionparam[4] = {TMath::Tan(fgkCarbonFiberJunctionAngle[0]
+                                           *  TMath::DegToRad()),-1.,0.,0.};
   TVector3* vertex[kvertexnumber];
   vertex[0] = new TVector3();
   vertex[3] = new TVector3(fgkCarbonFiberJunctionEdge[0]
@@ -2127,9 +1993,9 @@ TList* AliITSv11GeometrySSD::GetCarbonFiberLowerSupportList(){
   vertexposition[1][2] = new TVector3(0.,fgkCarbonFiberLowerSupportVolumePosition[0]);
   vertexposition[1][3] = new TVector3(fgkCarbonFiberTriangleLength,
                                                                fgkCarbonFiberLowerSupportVolumePosition[1]);
-  char* carbonfiberlowersupportshapename[kshapesnumber] = 
+  const char* carbonfiberlowersupportshapename[kshapesnumber] = 
                          {"CarbonFiberLowerSupportShape1","CarbonFiberLowerSupportShape2"};
-  char* carbonfiberlowersupportname[kshapesnumber] = 
+  const char* carbonfiberlowersupportname[kshapesnumber] = 
                          {"CarbonFiberLowerSupport1","CarbonFiberLowerSupport2"};
   TGeoArb8* carbonfiberlowersupportshape[kshapesnumber];
   TGeoVolume* carbonfiberlowersupport[kshapesnumber];
@@ -2202,8 +2068,10 @@ TGeoVolume* AliITSv11GeometrySSD::GetCoolingTubeSupport(Int_t nedges){
   // Vertex Positioning for TGeoXTru
   ///////////////////////////////////////
   TVector3** vertexposition = new TVector3*[kvertexnumber];
-  vertexposition[0] = new TVector3(fgkCoolingTubeSupportRmin*CosD(angle),
-                                                                  fgkCoolingTubeSupportRmin*SinD(angle));
+
+  Double_t Router = fgkCoolingTubeSupportRmin/CosD(phi/nedges);  //  Recalc inner radius so that tube fits inside  
+  vertexposition[0] = new TVector3(Router*CosD(angle),
+                                                                  Router*SinD(angle));
   vertexposition[1] = new TVector3(fgkCoolingTubeSupportRmax*CosD(angle),
                                                                   fgkCoolingTubeSupportRmax*SinD(angle));
   vertexposition[2] = new TVector3(vertexposition[1]->X(),
@@ -2212,10 +2080,11 @@ TGeoVolume* AliITSv11GeometrySSD::GetCoolingTubeSupport(Int_t nedges){
                                                                   fgkCoolingTubeSupportRmax);
   vertexposition[4] = new TVector3(-vertexposition[1]->X(),
                                                                    vertexposition[1]->Y());
+
   for(Int_t i=0; i<nedges; i++)
        vertexposition[i+5] = 
-               new TVector3(fgkCoolingTubeSupportRmin*CosD(psi+i*(2.*phi/nedges)),
-                                        fgkCoolingTubeSupportRmin*SinD(psi+i*(2.*phi/nedges)));
+               new TVector3(Router*CosD(psi+i*(2.*phi/nedges)),
+                            Router*SinD(psi+i*(2.*phi/nedges)));
   ///////////////////////////////////////////////////////////////////////
   // TGeoXTru Volume definition for Cooling Tube Support Arc Part
   ///////////////////////////////////////////////////////////////////////
@@ -2332,8 +2201,10 @@ TGeoVolume* AliITSv11GeometrySSD::GetCoolingTubeSupport(Int_t nedges){
                                                                                                                                         ymothervertex);
   virtualCoolingTubeSupportShape->DefineSection(0,-0.5*fgkCoolingTubeSupportWidth);
   virtualCoolingTubeSupportShape->DefineSection(1,0.5*fgkCoolingTubeSupportWidth);
-  TGeoVolume* virtualcoolingtubesupport = new TGeoVolume("CoolingTubeSupport",
-                                                                virtualCoolingTubeSupportShape,fSSDAir);
+  /*TGeoVolume* virtualcoolingtubesupport = new TGeoVolume("CoolingTubeSupport",
+    virtualCoolingTubeSupportShape,fSSDAir); */
+  TGeoVolume* virtualcoolingtubesupport = new TGeoVolumeAssembly("CoolingTubeSupport");
+
   ////////////////////////////////////////
   // Positioning Volumes in Virtual Volume
   ////////////////////////////////////////
@@ -2342,18 +2213,18 @@ TGeoVolume* AliITSv11GeometrySSD::GetCoolingTubeSupport(Int_t nedges){
   virtualcoolingtubesupport->AddNode(coolingtubesupportarc,1,coolingtubesupportrot);
   virtualcoolingtubesupport->AddNode(coolingtubesupportbox,1);
   virtualcoolingtubesupport->AddNode(coolingtubesupportseg,1);
-  virtualcoolingtubesupport->AddNode(coolingtubearc[0],1,coolingtubesupportrot);
-  virtualcoolingtubesupport->AddNode(coolingtubearc[1],1,coolingtubesupportrot);
-  virtualcoolingtubesupport->AddNode(coolingtubeseg[0],1);
-  virtualcoolingtubesupport->AddNode(coolingtubeseg[1],1);
+  //virtualcoolingtubesupport->AddNode(coolingtubearc[0],1,coolingtubesupportrot);
+  //virtualcoolingtubesupport->AddNode(coolingtubearc[1],1,coolingtubesupportrot);
+  //virtualcoolingtubesupport->AddNode(coolingtubeseg[0],1);
+  //virtualcoolingtubesupport->AddNode(coolingtubeseg[1],1);
   /////////////////////////////////////////////////////////////
   // Deallocating memory
   /////////////////////////////////////////////////////////////
   delete [] vertexposition;
-  delete xvertexpoints;
-  delete yvertexpoints;
-  delete xvert;
-  delete yvert;
+  delete [] xvertexpoints;
+  delete [] yvertexpoints;
+  delete [] xvert;
+  delete [] yvert;
   for(Int_t i=0; i< kvirtualvertexnumber; i++)
        delete virtualvertex[i];
   /////////////////////////////////////////////////////////////
@@ -2378,54 +2249,52 @@ TList* AliITSv11GeometrySSD::GetSSDHybridParts(){
   // Mother Volumes Containers 
   /////////////////////////////////////////////////////////////
   const Int_t kmothernumber = 2;
-  const Int_t kmothervertexnumber = 12;
+  const Int_t kmothervertexnumber = 8;
   Double_t xmothervertex[kmothernumber][kmothervertexnumber]; 
   Double_t ymothervertex[kmothernumber][kmothervertexnumber]; 
-  ///////////////////////
-  // Setting the vertices 
-  ///////////////////////
-  xmothervertex[0][0]  = -0.5*fgkSSDStiffenerLength;
-  xmothervertex[0][1]  = xmothervertex[0][0]; 
-  xmothervertex[0][2]  = fgkSSDFlexLength[0]-0.5*fgkSSDStiffenerLength;
-  xmothervertex[0][3]  = xmothervertex[0][2];
-  xmothervertex[0][4]  = xmothervertex[0][0];
-  xmothervertex[0][5]  = xmothervertex[0][4];
-  xmothervertex[0][6]  = -xmothervertex[0][0];
-  xmothervertex[0][7]  = xmothervertex[0][6];
-  xmothervertex[0][8]  = -xmothervertex[0][2];
-  xmothervertex[0][9]  = xmothervertex[0][8];
-  xmothervertex[0][10] = xmothervertex[0][7];
-  xmothervertex[0][11] = xmothervertex[0][10];
-  for(Int_t i=0; i<kmothervertexnumber; i++) xmothervertex[1][i] = xmothervertex[0][i];
-  for(Int_t i = 0; i<kmothernumber; i++){
-      ymothervertex[i][0]  = -(fgkSSDChipWidth-(0.5*fgkSSDStiffenerWidth-fgkSSDStiffenerToChipDist)
-                           + ssdchipcablesradius[i]+fgkSSDChipCablesWidth[1]+fgkSSDChipCablesWidth[2]);
-      ymothervertex[i][1]  = ssdstiffenerseparation-0.5*fgkSSDStiffenerWidth-fgkSSDFlexWidth[0];
-      ymothervertex[i][2]  = ymothervertex[i][1];
-      ymothervertex[i][3]  = ssdstiffenerseparation-0.5*fgkSSDStiffenerWidth;
-      ymothervertex[i][4]  = ymothervertex[i][3];
-      ymothervertex[i][5]  = ymothervertex[i][4]+0.5*fgkSSDStiffenerWidth-ymothervertex[i][0];
-      ymothervertex[i][6]  = ymothervertex[i][5];
-      ymothervertex[i][7]  = 0.5*fgkSSDStiffenerWidth+fgkSSDFlexWidth[0];
-      ymothervertex[i][8]  = ymothervertex[i][7];
-      ymothervertex[i][9]  = 0.5*fgkSSDStiffenerWidth;
-      ymothervertex[i][10] = ymothervertex[i][9];
-      ymothervertex[i][11] = ymothervertex[i][0];
-  }
-  TGeoXtru* ssdhybridmothershape[kmothernumber];
-//  TGeoVolume* ssdhybridmother[kmothernumber];
-  TGeoVolumeAssembly* ssdhybridmother[kmothernumber];
+
+  TGeoVolumeAssembly* ssdhybridassembly[kmothernumber];
+  TGeoVolume* ssdhybridmother[kmothernumber][2];
+
+  TGeoRotation hybridmotherrotR(TGeoRotation("",-90.0,0.0,0.0)*TGeoRotation("",0.0,90.0,0.0)*TGeoRotation("",90.,180.,-90));
+  TGeoRotation hybridmotherrotL(TGeoRotation("",180.,0.0,0.0)*hybridmotherrotR);
+  TGeoRotation *hybridmotherrotInv = new TGeoRotation(hybridmotherrotR.Inverse());
+
   const char* ssdhybridmothername[kmothernumber] = {"SSDHybridMother1","SSDHybridMother2"};
   for(Int_t i=0; i<kmothernumber; i++){
-      ssdhybridmothershape[i] = new TGeoXtru(2);
-      ssdhybridmothershape[i]->DefinePolygon(kmothervertexnumber,xmothervertex[i],
-                                          ymothervertex[i]);
-      ssdhybridmothershape[i]->DefineSection(0,-0.5*fgkSSDStiffenerHeight-fgkSSDChipHeight      
-                                               -fgkSSDChipCablesHeight[i+2]);
-      ssdhybridmothershape[i]->DefineSection(1, 0.5*fgkSSDStiffenerHeight);
-//      ssdhybridmother[i] = new TGeoVolume(ssdhybridmothername[i],ssdhybridmothershape[i],
-//                                          fSSDAir);
-      ssdhybridmother[i] = new TGeoVolumeAssembly(ssdhybridmothername[i]);
+    xmothervertex[i][0] = -0.5*fgkSSDStiffenerWidth;
+    ymothervertex[i][0] = 0.5*fgkSSDStiffenerHeight;
+    xmothervertex[i][1] = -0.5*fgkSSDStiffenerWidth;
+    ymothervertex[i][1] = -0.5*fgkSSDStiffenerHeight-fgkSSDChipHeight      
+      -fgkSSDChipCablesHeight[i+2];
+    
+    xmothervertex[i][2] = 0.5*(fgkSSDSensorLength-ssdstiffenerseparation); //0.5*fgkSSDStiffenerWidth;
+    ymothervertex[i][2] = -0.5*fgkSSDStiffenerHeight-fgkSSDChipHeight -fgkSSDChipCablesHeight[i+2];
+    xmothervertex[i][3] = xmothervertex[i][2];
+    ymothervertex[i][3] = ymothervertex[i][2]+fgkSSDChipCablesHeight[0]+fgkSSDChipCablesHeight[1];
+
+    xmothervertex[i][4] = xmothervertex[i][2]-0.4;  
+    ymothervertex[i][4] = ymothervertex[i][3];
+    xmothervertex[i][5] = xmothervertex[i][4];
+    ymothervertex[i][5] = ymothervertex[i][4]+2*ssdchipcablesradius[i];
+
+    xmothervertex[i][6] = 0.5*fgkSSDStiffenerWidth+ssdchipcablesradius[i]+0.3*fgkmm;
+    ymothervertex[i][6] = ymothervertex[i][5];
+    
+    xmothervertex[i][7] = xmothervertex[i][6];
+    ymothervertex[i][7] = 0.5*fgkSSDStiffenerHeight;
+    /*
+    for (Int_t j = 0; j<8; j++) {
+      cout << "vtx " << j << " " <<  xmothervertex[i][j] << " " << ymothervertex[i][j] << endl;
+    }
+    */
+    TGeoXtru *shape = new TGeoXtru(2);
+    shape->DefinePolygon(8,xmothervertex[i],ymothervertex[i]);
+    shape->DefineSection(0,-0.5*fgkSSDStiffenerLength);
+    shape->DefineSection(1,0.5*fgkSSDStiffenerLength);
+    ssdhybridmother[i][0] = new TGeoVolume(TString(ssdhybridmothername[i])+"L",shape,fSSDAir);
+    ssdhybridmother[i][1] = new TGeoVolume(TString(ssdhybridmothername[i])+"R",shape,fSSDAir);
+    ssdhybridassembly[i] = new TGeoVolumeAssembly(ssdhybridmothername[i]);
    }   
   /////////////////////////////////////////////////////////////
   // SSD Stiffener   
@@ -2437,52 +2306,61 @@ TList* AliITSv11GeometrySSD::GetSSDHybridParts(){
   TGeoVolume* ssdstiffener = new TGeoVolume("SSDStiffener",ssdstiffenershape,
                                             fSSDStiffenerMedium);  
   ssdstiffener->SetLineColor(fColorStiffener); 
-  TGeoTranslation* ssdstiffenertrans[kssdstiffenernumber];
-  for(Int_t i=0; i<kssdstiffenernumber; i++) 
-      ssdstiffenertrans[i] = new TGeoTranslation(0.,i*ssdstiffenerseparation,0.);
-  /////////////////////////////////////////////////////////////
-  // SSD Chip System   
-  /////////////////////////////////////////////////////////////
-  TList* ssdchipsystemlist = GetSSDChipSystem(); 
-  Double_t ssdchipseparation = fgkSSDSensorLength
-                             - 2.*fgkSSDModuleStiffenerPosition[1]
-                             - 2.*(fgkSSDStiffenerWidth-fgkSSDStiffenerToChipDist
-                             - 0.5*fgkSSDChipWidth);
-  Double_t ssdchipsystemlength = (fgkSSDChipNumber-1)*(fgkSSDChipLength 
-                              +  fgkSSDChipSeparationLength)+fgkSSDChipCablesLength[1];
-  TGeoTranslation* ssdchipsystemtrans = new TGeoTranslation(0.5*fgkSSDChipCablesLength[1]
-                                      - 0.5*ssdchipsystemlength,
-                                        0.5*(ssdstiffenerseparation-ssdchipseparation),
-                                      - 0.5*(fgkSSDChipHeight+fgkSSDStiffenerHeight));         
+
 ////////////////////////////
 // Capacitor 0603-2200 nF
 ///////////////////////////
   const Int_t knapacitor0603number = 5;
   TGeoBBox* capacitor0603shape =  new TGeoBBox("Capacitor0603Shape",
-                                                                                        0.5*fgkSSDCapacitor0603Length,
-                                                                                        0.5*(fgkSSDCapacitor0603Width),
-                                                                                        0.5*fgkSSDCapacitor0603Height);
+                                              0.5*fgkSSDCapacitor0603Length,
+                                              0.5*(fgkSSDCapacitor0603Width),
+                                              0.5*fgkSSDCapacitor0603Height);
   TGeoVolume* capacitor0603 = new TGeoVolume("Capacitor0603",capacitor0603shape,
                                              fSSDStiffener0603CapacitorMedium); 
   capacitor0603->SetLineColor(fColorAl);
+
+  TGeoVolume* ssdchip = GetSSDChip();
+
+  const Int_t knedges = 5;
+  TGeoVolume *ssdchipcables[2];
+
   for(Int_t i=0; i<kmothernumber; i++){
+    for(Int_t j=0; j<kssdstiffenernumber; j++){
+      ssdhybridmother[i][j]->AddNode(ssdstiffener,1,hybridmotherrotInv);
+      for(Int_t k=1; k<knapacitor0603number+1; k++){
+       ssdhybridmother[i][j]->AddNode(capacitor0603,k,
+                                      new TGeoCombiTrans("",
+                                                         -0.5*(fgkSSDStiffenerWidth - fgkSSDCapacitor0603Width),
+                                                         -0.5*(fgkSSDStiffenerHeight+fgkSSDCapacitor0603Height),
+                                                         (k-3.)/6*fgkSSDStiffenerLength,
+                                                         hybridmotherrotInv));
+      }
+    }
+    
+    GetSSDChipCables(ssdchipcables[0],ssdchipcables[1],fgkSSDChipCablesHeight[i+2],knedges);
+    for(Int_t k=0; k<fgkSSDChipNumber; k++){
+      TGeoTranslation *chipcabletrans = new TGeoTranslation("",0.5*fgkSSDStiffenerWidth-fgkSSDChipWidth,
+                                                           - 0.5*fgkSSDStiffenerHeight - fgkSSDChipHeight
+                                                           - fgkSSDChipCablesHeight[i+2],
+                                                           (k+0.5-fgkSSDChipNumber/2)*
+                                                           (fgkSSDChipLength + fgkSSDChipSeparationLength));
+      TGeoCombiTrans *chiptrans = new TGeoCombiTrans("",0.5*(fgkSSDStiffenerWidth-fgkSSDChipWidth),
+                                                    - 0.5*(fgkSSDChipHeight+fgkSSDStiffenerHeight),
+                                                    (k+0.5-fgkSSDChipNumber/2)*(fgkSSDChipLength + fgkSSDChipSeparationLength),
+                                                    hybridmotherrotInv);
       for(Int_t j=0; j<kssdstiffenernumber; j++){
-            ssdhybridmother[i]->AddNode(ssdstiffener,j+1,ssdstiffenertrans[j]);
-            for(Int_t k=1; k<knapacitor0603number+1; k++){
-                  ssdhybridmother[i]->AddNode(capacitor0603,knapacitor0603number*j+k,
-                        new TGeoTranslation((k-3.)/6*fgkSSDStiffenerLength,
-                                           j*ssdstiffenerseparation
-                        +                    0.5*((j==0? 1:-1)*fgkSSDStiffenerWidth
-                        +                    (j==0? -1:+1)*fgkSSDCapacitor0603Width),
-                        -                    0.5*(fgkSSDStiffenerHeight+fgkSSDCapacitor0603Height)));
-            }
-      } 
-      ssdhybridmother[i]->AddNode((TGeoVolume*)ssdchipsystemlist->At(i),i+1,ssdchipsystemtrans);
-      ssdhybridlist->Add(ssdhybridmother[i]);
+       ssdhybridmother[i][j]->AddNode(ssdchipcables[j],k+1,chipcabletrans);
+       ssdhybridmother[i][j]->AddNode(ssdchip,k+1,chiptrans);
+      }
+    }  
+    // Final placement by assembly
+    ssdhybridassembly[i]->AddNode(ssdhybridmother[i][0],1,new TGeoCombiTrans(TGeoTranslation("",0,0,0),hybridmotherrotL));
+    ssdhybridassembly[i]->AddNode(ssdhybridmother[i][1],1,new TGeoCombiTrans(TGeoTranslation("",0,ssdstiffenerseparation,0),hybridmotherrotR));
+    ssdhybridlist->Add(ssdhybridassembly[i]);
   }    
-/////////////////////////////////////////////////////////////
-// Mother Volume Containing Capacitor Part 
-/////////////////////////////////////////////////////////////
+  /////////////////////////////////////////////////////////////
+  // Mother Volume Containing Capacitor Part 
+  /////////////////////////////////////////////////////////////
   const Int_t kcapacitormothernumber = 8;
   Double_t xcapacitorvertex[kcapacitormothernumber];
   Double_t ycapacitorvertex[kcapacitormothernumber];  
@@ -2589,8 +2467,8 @@ TList* AliITSv11GeometrySSD::GetSSDHybridParts(){
                                 - fgkSSDConnectorSeparation;
   Double_t wirey = ssdstiffenerseparation+fgkSSDStiffenerWidth
                                 - 2.*fgkSSDConnectorPosition[1]-fgkSSDConnectorWidth;
-  Double_t ssdwireradius = TMath::Sqrt(TMath::Power(wirex,2.)
-                                        + TMath::Power(wirey,2));
+  Double_t ssdwireradius = TMath::Sqrt(wirex*wirex+wirey*wirey);
+
   Double_t wireangle = TMath::ATan(wirex/wirey);
   TGeoTube *hybridwireshape = new TGeoTube("HybridWireShape", 0., 
                                                fgkSSDWireRadius, 0.5*ssdwireradius);
@@ -2622,7 +2500,6 @@ TList* AliITSv11GeometrySSD::GetSSDHybridParts(){
   /////////////////////////////////////////////////////////////
   delete hybridwirecombitrans[0];
   delete hybridwirecombitrans[1];
-  delete ssdchipsystemlist;
   return ssdhybridlist;
   /////////////////////////////////////////////////////////////
 }
@@ -2708,45 +2585,20 @@ TGeoVolume* AliITSv11GeometrySSD::GetCoolingBlockSystem(){
   coolingsystemothershape->DefineSection(1, 0.5*(fgkSSDCoolingBlockHoleCenter
                                                                                           + fgkCoolingTubeRmax));
   TGeoVolume* coolingsystemother = new TGeoVolumeAssembly("CoolingBlockSystem");
-//  TGeoVolume* coolingsystemother = new TGeoVolume("CoolingBlockSystem",
-//                                                       coolingsystemothershape,fSSDAir);
-  /////////////////////////////////////////////////////////////
-  // SSD Cooling Tube Part 
-  /////////////////////////////////////////////////////////////
-  TGeoTube* coolingtubeshape[fgkcoolingtubenumber];
-  coolingtubeshape[0] = new TGeoTube(fgkCoolingTubeRmin,fgkCoolingTubeRmax,
-                                                                                0.5*(fgkSSDCoolingBlockWidth-fgkSSDTolerance)); 
-  coolingtubeshape[1] = new TGeoTube(0.0,fgkCoolingTubeRmin,
-                                                                        0.5*(fgkSSDCoolingBlockWidth-fgkSSDTolerance));
-  TGeoVolume* coolingtube[fgkcoolingtubenumber];
-  coolingtube[0] = new TGeoVolume("OuterCoolingTube",coolingtubeshape[0],
-                                                                       fSSDCoolingTubePhynox);
-  coolingtube[1] = new TGeoVolume("InnerCoolingTube",coolingtubeshape[1],
-                                                                       fSSDCoolingTubeWater);
-  coolingtube[0]->SetLineColor(fColorPhynox);
-  coolingtube[1]->SetLineColor(fColorWater);
   TGeoVolume* ssdcoolingblock = GetSSDCoolingBlock(30);
   /////////////////////////////////////////////////////////////
   // Adding Cooling block to mother volume
   /////////////////////////////////////////////////////////////
-   for(Int_t i=0; i<kcoolingblocknumber; i++){ 
-       coolingsystemother->AddNode(ssdcoolingblock,i+1,coolingblockmatrix[i]);
-       coolingsystemother->AddNode(coolingtube[0],i+1,coolingtubematrix[i]);
-       coolingsystemother->AddNode(coolingtube[1],i+1,coolingtubematrix[i]);
+  for(Int_t i=0; i<kcoolingblocknumber; i++){ 
+    coolingsystemother->AddNode(ssdcoolingblock,i+1,coolingblockmatrix[i]);
   }
   /////////////////////////////////////////////////////////////
   // Deallocating memory
   /////////////////////////////////////////////////////////////
-       delete coolingblocktransvector;
-       delete localcoolingblockrot;
-       delete localcoolingtubetrans;
-       delete localcoolingtuberot;
-  /////////////////////////////////////////////////////////////
-  // Checking overlaps 
-  /////////////////////////////////////////////////////////////
-       //coolingsystemother->CheckOverlaps(0.01);
-  /////////////////////////////////////////////////////////////
-       return coolingsystemother;
+  delete coolingblocktransvector;
+  delete localcoolingblockrot;
+
+  return coolingsystemother;
 }
 /////////////////////////////////////////////////////////////////////////////////
 TGeoVolume* AliITSv11GeometrySSD::GetSSDStiffenerFlex()const{
@@ -2870,7 +2722,8 @@ TGeoVolume* AliITSv11GeometrySSD::GetSSDEndFlex(){
   Double_t ssdflexboxlength = fgkSSDFlexFullLength-2.*fgkSSDFlexAngle
                                                * TMath::DegToRad()*ssdflexradiusmax
                                                - fgkSSDFlexLength[2]-TMath::Pi()
-                                               * fgkSSDStiffenerHeight-fgkSSDFlexLength[0];
+                                               * fgkSSDStiffenerHeight-fgkSSDFlexLength[0]
+                                                       - 0.1*fgkSSDFlexFullLength;
   const Int_t knedges = 20;  
   const Int_t karcnumber = 2;
   TVector3* vertexposition[karcnumber*(knedges+1)];
@@ -2973,8 +2826,9 @@ for(Int_t i=0; i<karcnumber; i++){
                                                                           xmothervertex,ymothervertex);
   ssdendflexmothershape->DefineSection(0,-0.5*fgkSSDFlexWidth[0]);
   ssdendflexmothershape->DefineSection(1, 0.5*fgkSSDFlexWidth[0]);
-  TGeoVolume* ssdendflexmother = new TGeoVolume("SSDEndFlexMother",
-                                                                ssdendflexmothershape,fSSDAir);        
+//  TGeoVolume* ssdendflexmother = new TGeoVolume("SSDEndFlexMother",
+//                                                              ssdendflexmothershape,fSSDAir);        
+  TGeoVolumeAssembly* ssdendflexmother = new TGeoVolumeAssembly("SSDEndFlexMother");
   //////////////////////////////////////
   // End Flex TGeoXtru Layer Definition 
   //////////////////////////////////////
@@ -3036,8 +2890,7 @@ TGeoVolume* AliITSv11GeometrySSD::GetSSDMountingBlock(){
                         -     fgkSSDMountingBlockScrewHoleRadius[0];
   xvertex[7] = xvertex[6];
   yvertex[0] = -0.5*fgkCoolingTubeSupportHeight-fgkSSDModuleCoolingBlockToSensor
-                        +      fgkSSDMountingBlockHeight[1]-0.5*fgkSSDMountingBlockHeight[0]
-                        -  fgkSSDModuleVerticalDisalignment;
+                        +      fgkSSDMountingBlockHeight[1]-0.5*fgkSSDMountingBlockHeight[0];
   yvertex[1] = 0.5*fgkSSDMountingBlockHeight[0];
   yvertex[2] = yvertex[1]; 
   yvertex[3] = fgkSSDMountingBlockHeight[1]-yvertex[1];
@@ -3046,6 +2899,7 @@ TGeoVolume* AliITSv11GeometrySSD::GetSSDMountingBlock(){
                         - fgkSSDMountingBlockHeight[0];
   yvertex[6] = yvertex[5];
   yvertex[7] = yvertex[0];
+
   ///////////////////////////////////////////////////////////////////////
   // TGeoXTru Volume definition for Mounting Block Part
   ///////////////////////////////////////////////////////////////////////
@@ -3224,8 +3078,7 @@ TGeoVolume* AliITSv11GeometrySSD::GetSSDMountingBlock(){
   xmothervertex[8] = -0.25*(fgkSSDMountingBlockLength[0]-fgkSSDMountingBlockLength[1]); 
   xmothervertex[9] = xmothervertex[8]; 
   ymothervertex[0] = -0.5*fgkCoolingTubeSupportHeight-fgkSSDModuleCoolingBlockToSensor
-                              + fgkSSDMountingBlockHeight[1]-0.5*fgkSSDMountingBlockHeight[0]
-                                  - fgkSSDModuleVerticalDisalignment;
+                              + fgkSSDMountingBlockHeight[1]-0.5*fgkSSDMountingBlockHeight[0];
   ymothervertex[1] = 0.5*fgkSSDMountingBlockHeight[0]+fgkMountingBlockClipThickness;
   ymothervertex[2] = ymothervertex[1];
   ymothervertex[3] = ymothervertex[2]+(fgkSSDMountingBlockHeight[1]
@@ -3237,6 +3090,7 @@ TGeoVolume* AliITSv11GeometrySSD::GetSSDMountingBlock(){
   ymothervertex[7] = ymothervertex[6]-fgkMountingBlockClipThickness;
   ymothervertex[8] = ymothervertex[7];
   ymothervertex[9] = ymothervertex[0];
+
   ///////////////////////////////////////////////////////////////////////
   // TGeoXTru Volume definition for Mounting Block Clip Part
   ///////////////////////////////////////////////////////////////////////
@@ -3300,7 +3154,7 @@ TGeoVolume* AliITSv11GeometrySSD::GetSSDMountingBlock(){
   Int_t edgesnumber[2] = {50,6};
   Double_t section[2] = {-0.5*(ymothervertex[3]-ymothervertex[2]),
                                                 +0.5*(ymothervertex[3]-ymothervertex[2])};
-  TGeoXtru* clipscrewshape = GetScrewShape(radius,edgesnumber,section);
+  TGeoShape* clipscrewshape = GetScrewShape(radius,edgesnumber,section);
   TGeoVolume* clipscrew = new TGeoVolume("ClipScrewShape",clipscrewshape,fSSDSupportRingAl);
   clipscrew->SetLineColor(12);
   TGeoRotation* screwrot = new TGeoRotation();
@@ -3326,183 +3180,87 @@ TGeoVolume* AliITSv11GeometrySSD::GetSSDMountingBlock(){
   return ssdmountingblockclip;
 }
 ///////////////////////////////////////////////////////////////////////////////
-TList* AliITSv11GeometrySSD::GetCoolingTubeList()const{
+void AliITSv11GeometrySSD::CreateCoolingTubes() {
   /////////////////////////////////////////////////////////////
   // Method generating the Cooling Tube 
+  // sets fcoolingtube and returns list for endladdercoolingtube
   /////////////////////////////////////////////////////////////  
-   TGeoTube** coolingtubeshape[fgkcoolingtubenumber];
-   for(Int_t i=0; i<fgkcoolingtubenumber; i++) coolingtubeshape[i] = 
-                                                                                               new     TGeoTube*[2];
-   // Ladder Cooling Tubes
-   coolingtubeshape[0][0] = new TGeoTube(fgkCoolingTubeRmin,fgkCoolingTubeRmax,
-                                         0.25 * (fgkSSDSensorLength-2.*fgkSSDModuleStiffenerPosition[1]
-                                                 -     2.*fgkSSDCoolingBlockWidth-fgkCoolingTubeSupportWidth));
-   coolingtubeshape[0][1] = new TGeoTube(0.0,fgkCoolingTubeRmin,
-                                                                                coolingtubeshape[0][0]->GetDz());
-   coolingtubeshape[1][0] = new TGeoTube(fgkCoolingTubeRmin,fgkCoolingTubeRmax,
-                                                                                0.5*(fgkSSDModuleStiffenerPosition[1]
-                                                 -                                       fgkSSDSensorOverlap));
-   coolingtubeshape[1][1] = new TGeoTube(0.0,fgkCoolingTubeRmin,
-                                                                                coolingtubeshape[1][0]->GetDz());
-   coolingtubeshape[2][0] = new TGeoTube(fgkCoolingTubeRmin,fgkCoolingTubeRmax,
-                                                                                0.5*(fgkSSDModuleStiffenerPosition[1]));
-   coolingtubeshape[2][1] = new TGeoTube(0.0,fgkCoolingTubeRmin,
-                                                                                coolingtubeshape[2][0]->GetDz());
-   // End Ladder Cooling Tubes 
-   TGeoTube** endladdercoolingtubeshape[fgkendladdercoolingtubenumber];
-   for(Int_t i=0; i<fgkendladdercoolingtubenumber; i++) 
-   endladdercoolingtubeshape[i] = new  TGeoTube*[2];
-   endladdercoolingtubeshape[0][0] = new TGeoTube(fgkCoolingTubeRmin,fgkCoolingTubeRmax,
-                                                       0.50 * (fgkEndLadderMountingBlockPosition[0]
-                                                 -                     fgkendladdercoolingsupportdistance[0]-fgkSSDTolerance));
-   endladdercoolingtubeshape[0][1] = new TGeoTube(0.0,fgkCoolingTubeRmin,
-                                                                       endladdercoolingtubeshape[0][0]->GetDz());
-   endladdercoolingtubeshape[1][0] = new TGeoTube(fgkCoolingTubeRmin,fgkCoolingTubeRmax,
-                                                       0.50 * (fgkendladdercoolingsupportdistance[0]
-                                                 +                     fgkendladdercoolingsupportdistance[1]
-                                                 -                     fgkCoolingTubeSupportWidth-fgkSSDTolerance));
-   endladdercoolingtubeshape[1][1] = new TGeoTube(0.0,fgkCoolingTubeRmin,
-                                                                       endladdercoolingtubeshape[1][0]->GetDz());
-   endladdercoolingtubeshape[2][0] = new TGeoTube(fgkCoolingTubeRmin,fgkCoolingTubeRmax,
-                                                       0.50 * (fgkEndLadderCarbonFiberLowerJunctionLength[0]
-                                                 -                     fgkEndLadderMountingBlockPosition[0]
-                                                 -                     fgkendladdercoolingsupportdistance[1]           
-                                                 -                     fgkCoolingTubeSupportWidth-fgkSSDTolerance));
-   endladdercoolingtubeshape[2][1] = new TGeoTube(0.0,fgkCoolingTubeRmin,
-                                                                       endladdercoolingtubeshape[2][0]->GetDz());
-   endladdercoolingtubeshape[3][0] = new TGeoTube(fgkCoolingTubeRmin,fgkCoolingTubeRmax,
-                                                         0.50 * (fgkMountingBlockToSensorSupport
-                                                       - 0.50 * (fgkSSDFlexHoleWidth-fgkSSDSensorSideSupportWidth)
-                                                       -                 fgkSSDStiffenerWidth-fgkSSDModuleStiffenerPosition[1]
-                                                       +                 fgkSSDSensorOverlap
-                                                       +                 fgkEndLadderCarbonFiberLowerJunctionLength[1]
-                                                       -                 fgkendladdercoolingsupportdistance[2]
-                                                       -                 fgkEndLadderMountingBlockPosition[1]
-                                                       -                 fgkCoolingTubeSupportWidth-fgkSSDTolerance));
-   endladdercoolingtubeshape[3][1] = new TGeoTube(0.0,fgkCoolingTubeRmin,
-                                                                       endladdercoolingtubeshape[3][0]->GetDz());
-   endladdercoolingtubeshape[4][0] = new TGeoTube(fgkCoolingTubeRmin,fgkCoolingTubeRmax,
-                                                         0.50 * (fgkendladdercoolingsupportdistance[2]-fgkSSDTolerance));
-   endladdercoolingtubeshape[4][1] = new TGeoTube(0.0,fgkCoolingTubeRmin,
-                                                                       endladdercoolingtubeshape[4][0]->GetDz());
-   // Ladder Cooling Tubes
-   TGeoVolume** coolingtube[fgkcoolingtubenumber];
-   for(Int_t i=0; i<fgkcoolingtubenumber; i++) coolingtube[i] = 
-                                                                                        new TGeoVolume*[2];
-   coolingtube[0][0] = new TGeoVolume("OuterCoolingTube1",coolingtubeshape[0][0],
-                                                                         fSSDCoolingTubePhynox);
-   coolingtube[0][1] = new TGeoVolume("InnerCoolingTube1",coolingtubeshape[0][1],
-                                                                         fSSDCoolingTubeWater);
-   coolingtube[1][0] = new TGeoVolume("OuterCoolingTube2",coolingtubeshape[1][0],
-                                                                         fSSDCoolingTubePhynox);
-   coolingtube[1][1] = new TGeoVolume("InnerCoolingTube2",coolingtubeshape[1][1],
-                                                                         fSSDCoolingTubeWater);
-   coolingtube[2][0] = new TGeoVolume("OuterCoolingTube3",coolingtubeshape[2][0],
-                                                                         fSSDCoolingTubePhynox);
-   coolingtube[2][1] = new TGeoVolume("InnerCoolingTube3",coolingtubeshape[2][1],
-                                                                         fSSDCoolingTubeWater);
-   for(Int_t i=0; i<fgkcoolingtubenumber; i++){
-       coolingtube[i][0]->SetLineColor(fColorPhynox);
-       coolingtube[i][1]->SetLineColor(fColorWater);
-   }
-   // End Ladder Cooling Tubes 
-   TGeoVolume** endladdercoolingtube[fgkendladdercoolingtubenumber];
-   for(Int_t i=0; i<fgkendladdercoolingtubenumber; i++) 
-   endladdercoolingtube[i] = new TGeoVolume*[2];
-   endladdercoolingtube[0][0] = new TGeoVolume("OuterEndLadderCoolingTube1",
-                                                               endladdercoolingtubeshape[0][0],
-                                                               fSSDCoolingTubePhynox);
-   endladdercoolingtube[0][1] = new TGeoVolume("InnerEndlLadderCoolingTube1",
-                                                               endladdercoolingtubeshape[0][1],
-                                                               fSSDCoolingTubeWater);
-   endladdercoolingtube[1][0] = new TGeoVolume("OuterEndLadderCoolingTube2",
-                                                               endladdercoolingtubeshape[1][0],
-                                                               fSSDCoolingTubePhynox);
-   endladdercoolingtube[1][1] = new TGeoVolume("InnerEndlLadderCoolingTube2",
-                                                               endladdercoolingtubeshape[1][1],
-                                                               fSSDCoolingTubeWater);
-   endladdercoolingtube[2][0] = new TGeoVolume("OuterEndLadderCoolingTube3",
-                                                               endladdercoolingtubeshape[2][0],
-                                                               fSSDCoolingTubePhynox);
-   endladdercoolingtube[2][1] = new TGeoVolume("InnerEndlLadderCoolingTube3",
-                                                               endladdercoolingtubeshape[2][1],
-                                                               fSSDCoolingTubeWater);
-   endladdercoolingtube[3][0] = new TGeoVolume("OuterEndLadderCoolingTube4",
-                                                               endladdercoolingtubeshape[3][0],
-                                                               fSSDCoolingTubePhynox);
-   endladdercoolingtube[3][1] = new TGeoVolume("InnerEndlLadderCoolingTube4",
-                                                               endladdercoolingtubeshape[3][1],
-                                                               fSSDCoolingTubeWater);
-   endladdercoolingtube[4][0] = new TGeoVolume("OuterEndLadderCoolingTube5",
-                                                               endladdercoolingtubeshape[4][0],
-                                                               fSSDCoolingTubePhynox);
-   endladdercoolingtube[4][1] = new TGeoVolume("InnerEndlLadderCoolingTube5",
-                                                               endladdercoolingtubeshape[4][1],
-                                                               fSSDCoolingTubeWater);
-   for(Int_t i=0; i<fgkendladdercoolingtubenumber; i++){
-               endladdercoolingtube[i][0]->SetLineColor(fColorPhynox);
-               endladdercoolingtube[i][1]->SetLineColor(fColorWater);
-   }
+  TGeoTube *coolingtubeshape[2];
+  // Ladder Cooling Tubes
+
+  // MvL: Simplified cooling tubes
+  coolingtubeshape[0] = new TGeoTube(fgkCoolingTubeRmin,fgkCoolingTubeRmax,0.5*fgkCoolingTubeLength);
+  coolingtubeshape[1] = new TGeoTube(0.0,fgkCoolingTubeRmin,coolingtubeshape[0]->GetDz());
+
+  // End Ladder Cooling Tubes  
+  TGeoTube** endladdercoolingtubeshape[fgkendladdercoolingtubenumber];
+  for(Int_t i=0; i<fgkendladdercoolingtubenumber; i++) 
+    endladdercoolingtubeshape[i] = new TGeoTube*[2];
+
+  Double_t sensZshift = 0.5*fgkCarbonFiberJunctionWidth - fgkCarbonFiberLowerSupportWidth - fgkLowerSupportToSensorZ;
+  endladdercoolingtubeshape[0][0] = new TGeoTube(fgkCoolingTubeRmin,fgkCoolingTubeRmax,
+                                                0.5*(fgkEndLadderCarbonFiberLowerJunctionLength[0] - sensZshift));
+  endladdercoolingtubeshape[0][1] = new TGeoTube(0.0,fgkCoolingTubeRmin,
+                                                endladdercoolingtubeshape[0][0]->GetDz());
+  endladdercoolingtubeshape[1][0] = new TGeoTube(fgkCoolingTubeRmin,fgkCoolingTubeRmax,
+                                                0.5*(fgkEndLadderCarbonFiberLowerJunctionLength[1] + sensZshift));
+  endladdercoolingtubeshape[1][1] = new TGeoTube(0.0,fgkCoolingTubeRmin,
+                                                endladdercoolingtubeshape[1][0]->GetDz()-0.5*fgkSSDTolerance);
+  // Ladder Cooling Tubes
+  TGeoVolume* coolingtube[2];
+  coolingtube[0] = new TGeoVolume("OuterCoolingTube1",coolingtubeshape[0], fSSDCoolingTubePhynox);
+  coolingtube[1] = new TGeoVolume("InnerCoolingTube1",coolingtubeshape[1], fSSDCoolingTubeWater);
+  coolingtube[0]->SetLineColor(fColorPhynox);
+  coolingtube[1]->SetLineColor(fColorWater);
+
+  // End Ladder Cooling Tubes  
+  TGeoVolume** endladdercoolingtube[fgkendladdercoolingtubenumber];
+  for(Int_t i=0; i<fgkendladdercoolingtubenumber; i++) 
+    endladdercoolingtube[i] = new TGeoVolume*[2];
+  endladdercoolingtube[0][0] = new TGeoVolume("OuterEndLadderCoolingTube1",
+                                             endladdercoolingtubeshape[0][0],
+                                             fSSDCoolingTubePhynox);
+  endladdercoolingtube[0][1] = new TGeoVolume("InnerEndlLadderCoolingTube1",
+                                             endladdercoolingtubeshape[0][1],
+                                             fSSDCoolingTubeWater);
+  endladdercoolingtube[1][0] = new TGeoVolume("OuterEndLadderCoolingTube2",
+                                             endladdercoolingtubeshape[1][0],
+                                             fSSDCoolingTubePhynox);
+  endladdercoolingtube[1][1] = new TGeoVolume("InnerEndlLadderCoolingTube2",
+                                             endladdercoolingtubeshape[1][1],
+                                             fSSDCoolingTubeWater);
+  for(Int_t i=0; i<fgkendladdercoolingtubenumber; i++){
+    endladdercoolingtube[i][0]->SetLineColor(fColorPhynox);
+    endladdercoolingtube[i][1]->SetLineColor(fColorWater);
+  }
+  
   /////////////////////////////////////////////////////////////
   // Virtual Volume containing Cooling Tubes
   /////////////////////////////////////////////////////////////
   // Ladder Cooling Tubes
-  TGeoTube* virtualcoolingtubeshape[fgkcoolingtubenumber];
-  for(Int_t i=0; i<fgkcoolingtubenumber; i++)
-  virtualcoolingtubeshape[i] = new TGeoTube(coolingtubeshape[i][1]->GetRmin(),
-                                                                                       coolingtubeshape[i][0]->GetRmax(),
-                                                                                       coolingtubeshape[i][0]->GetDz());
-  TGeoVolume* virtualcoolingtube[fgkcoolingtubenumber];
-  virtualcoolingtube[0] = new TGeoVolume("CoolingTube1",virtualcoolingtubeshape[0],
-                                                                         fSSDAir);
-  virtualcoolingtube[1] = new TGeoVolume("CoolingTube2",virtualcoolingtubeshape[1],
-                                                                         fSSDAir);
-  virtualcoolingtube[2] = new TGeoVolume("CoolingTube3",virtualcoolingtubeshape[2],
-                                                                         fSSDAir);
+  TGeoTube* virtualcoolingtubeshape = new TGeoTube(coolingtubeshape[1]->GetRmin(),
+                                                  coolingtubeshape[0]->GetRmax(),
+                                                  coolingtubeshape[0]->GetDz());
+  fcoolingtube = new TGeoVolume("CoolingTube1",virtualcoolingtubeshape, fSSDAir);
+  fcoolingtube->AddNode(coolingtube[0],1);
+  fcoolingtube->AddNode(coolingtube[1],1);
+
   // End Ladder Cooling Tubes
   TGeoTube* endladdervirtualcoolingtubeshape[fgkendladdercoolingtubenumber];
   for(Int_t i=0; i<fgkendladdercoolingtubenumber; i++)
-  endladdervirtualcoolingtubeshape[i] = new TGeoTube(endladdercoolingtubeshape[i][1]->GetRmin(),
-                                                                                       endladdercoolingtubeshape[i][0]->GetRmax(),
-                                                                                       endladdercoolingtubeshape[i][0]->GetDz());
-  TGeoVolume* endladdervirtualcoolingtube[fgkendladdercoolingtubenumber];
-  endladdervirtualcoolingtube[0] = new TGeoVolume("EndLadderCoolingTube1",
-                                                                         endladdervirtualcoolingtubeshape[0],
-                                                                         fSSDAir);
-  endladdervirtualcoolingtube[1] = new TGeoVolume("EndLadderCoolingTube2",
-                                                                         endladdervirtualcoolingtubeshape[1],
-                                                                         fSSDAir);
-  endladdervirtualcoolingtube[2] = new TGeoVolume("EndLadderCoolingTube3",
-                                                                         endladdervirtualcoolingtubeshape[2],
-                                                                         fSSDAir);
-  endladdervirtualcoolingtube[3] = new TGeoVolume("EndLadderCoolingTube4",
-                                                                         endladdervirtualcoolingtubeshape[3],
-                                                                         fSSDAir);
-  endladdervirtualcoolingtube[4] = new TGeoVolume("EndLadderCoolingTube5",
-                                                                         endladdervirtualcoolingtubeshape[4],
-                                                                         fSSDAir);
-  TList* coolingtubelist = new TList();
-  for(Int_t i=0; i<fgkcoolingtubenumber; i++){
-       virtualcoolingtube[i]->AddNode(coolingtube[i][0],1);
-       virtualcoolingtube[i]->AddNode(coolingtube[i][1],1);
-    coolingtubelist->Add(virtualcoolingtube[i]);
-  }
-       endladdervirtualcoolingtube[0]->AddNode(endladdercoolingtube[0][0],1);
-       endladdervirtualcoolingtube[0]->AddNode(endladdercoolingtube[0][1],1);
-    coolingtubelist->Add(endladdervirtualcoolingtube[0]);
-       endladdervirtualcoolingtube[1]->AddNode(endladdercoolingtube[1][0],1);
-       endladdervirtualcoolingtube[1]->AddNode(endladdercoolingtube[1][1],1);
-    coolingtubelist->Add(endladdervirtualcoolingtube[1]);
-       endladdervirtualcoolingtube[2]->AddNode(endladdercoolingtube[2][0],1);
-       endladdervirtualcoolingtube[2]->AddNode(endladdercoolingtube[2][1],1);
-    coolingtubelist->Add(endladdervirtualcoolingtube[2]);
-       endladdervirtualcoolingtube[3]->AddNode(endladdercoolingtube[3][0],1);
-       endladdervirtualcoolingtube[3]->AddNode(endladdercoolingtube[3][1],1);
-    coolingtubelist->Add(endladdervirtualcoolingtube[3]);
-       endladdervirtualcoolingtube[4]->AddNode(endladdercoolingtube[4][0],1);
-       endladdervirtualcoolingtube[4]->AddNode(endladdercoolingtube[4][1],1);
-    coolingtubelist->Add(endladdervirtualcoolingtube[4]);
-  return coolingtubelist;
+    endladdervirtualcoolingtubeshape[i] = new TGeoTube(endladdercoolingtubeshape[i][1]->GetRmin(),
+                                                      endladdercoolingtubeshape[i][0]->GetRmax(),
+                                                      endladdercoolingtubeshape[i][0]->GetDz());
+  fendladdercoolingtube[0] = new TGeoVolume("EndLadderCoolingTube1",
+                                           endladdervirtualcoolingtubeshape[0],
+                                           fSSDAir);
+  fendladdercoolingtube[1] = new TGeoVolume("EndLadderCoolingTube2",
+                                           endladdervirtualcoolingtubeshape[1],
+                                           fSSDAir);
+  fendladdercoolingtube[0]->AddNode(endladdercoolingtube[0][0],1);
+  fendladdercoolingtube[0]->AddNode(endladdercoolingtube[0][1],1);
+  fendladdercoolingtube[1]->AddNode(endladdercoolingtube[1][0],1);
+  fendladdercoolingtube[1]->AddNode(endladdercoolingtube[1][1],1);  
 }
 ///////////////////////////////////////////////////////////////////////////////
 TGeoVolume* AliITSv11GeometrySSD::GetSSDCoolingBlock(Int_t nedges){
@@ -3572,20 +3330,20 @@ TGeoVolume* AliITSv11GeometrySSD::GetSSDCoolingBlock(Int_t nedges){
   // Deallocating memory
   /////////////////////////////////////////////////////////////
   delete [] vertexposition;
-  delete xvertexpoints;
-  delete yvertexpoints;
+  delete [] xvertexpoints;
+  delete [] yvertexpoints;
   /////////////////////////////////////////////////////////////
   return ssdcoolingblock;
 }
 /////////////////////////////////////////////////////////////////////////////////
-TGeoVolume* AliITSv11GeometrySSD::GetSSDChipCables(Double_t SSDChipCablesHeigth, Int_t nedges){
+void AliITSv11GeometrySSD::GetSSDChipCables(TGeoVolume *&cableL, TGeoVolume *&cableR, Double_t SSDChipCablesHeight, Int_t nedges){
   ///////////////////////////////////////////////////////
-  const Int_t kssdchipcablesnumber    = 2;
-  const Int_t kssdchipcableslaynumber = 2;
-  const Int_t kvertexnumber                      = 4*(nedges+1)+4;
+  static const Int_t kssdchipcablesnumber    = 2;  // Number of cables: left and right
+  static const Int_t kssdchipcableslaynumber = 2;  // Number of layers: Al and Kapton
+  static const Int_t kvertexnumber                       = 4*(nedges+1)+4;
   Int_t ssdchipcablescolor[kssdchipcableslaynumber] = {fColorAl,fColorPolyhamide};
   Double_t ssdchipcablesradius[kssdchipcableslaynumber];
-  ssdchipcablesradius[0] = 0.25*(SSDChipCablesHeigth
+  ssdchipcablesradius[0] = 0.25*(SSDChipCablesHeight
                                                 -  fgkSSDChipCablesHeight[0]
                                                 -  fgkSSDChipCablesHeight[1]);
   ssdchipcablesradius[1] = ssdchipcablesradius[0]-fgkSSDChipCablesHeight[0];
@@ -3626,11 +3384,11 @@ TGeoVolume* AliITSv11GeometrySSD::GetSSDChipCables(Double_t SSDChipCablesHeigth,
   TVector3* vertex = new TVector3();
   TVector3* transvector[kssdchipcableslaynumber];
   transvector[0] = new TVector3(fgkSSDChipWidth,
-                                                               SSDChipCablesHeigth-ssdchipcablesradius[0]);
+                                                               SSDChipCablesHeight-ssdchipcablesradius[0]);
   transvector[1] = new TVector3();
-  TGeoXtru* ssdchipcableshape[kssdchipcableslaynumber*kssdchipcableslaynumber];
-  TGeoVolume* ssdchipcable[kssdchipcableslaynumber*kssdchipcableslaynumber];
-  const char* ssdchipcablename[kssdchipcableslaynumber*kssdchipcableslaynumber] = 
+  TGeoXtru* ssdchipcableshape[kssdchipcableslaynumber*kssdchipcablesnumber];
+  TGeoVolume* ssdchipcable[kssdchipcableslaynumber*kssdchipcablesnumber];
+  const char* ssdchipcablename[kssdchipcableslaynumber*kssdchipcablesnumber] = 
                {"SSDChipcableAllay1Left","SSDChipcableKaptonlay2Left",
                 "SSDChipcableAllay1Right","SSDChipcableKaptonlay2Right"};
   for(Int_t k=0; k<kssdchipcablesnumber; k++){
@@ -3639,9 +3397,9 @@ TGeoVolume* AliITSv11GeometrySSD::GetSSDChipCables(Double_t SSDChipCablesHeigth,
                                 +               fgkSSDChipCablesHeight[0]
                                 +               fgkSSDChipCablesHeight[1]);  
        for(Int_t i=0; i<kssdchipcableslaynumber; i++){
-               vertexposition[i][0] = new TVector3(0.,SSDChipCablesHeigth
+               vertexposition[i][0] = new TVector3(0.,SSDChipCablesHeight
                                                         - fgkSSDChipCablesHeight[0]-i*fgkSSDChipCablesHeight[1]);
-               vertexposition[i][1] = new TVector3(0.,SSDChipCablesHeigth
+               vertexposition[i][1] = new TVector3(0.,SSDChipCablesHeight
                                                         - i*fgkSSDChipCablesHeight[0]);
                vertexposition[i][2*(nedges+1)+2] = 
                                        new TVector3(fgkSSDChipWidth+ssdchipcablesradius[0]
@@ -3694,35 +3452,38 @@ TGeoVolume* AliITSv11GeometrySSD::GetSSDChipCables(Double_t SSDChipCablesHeigth,
   /////////////////////////////////////////////////////////////
   // Mother Volume definition 
   /////////////////////////////////////////////////////////////
-  Double_t ssdchipseparation = fgkSSDSensorLength
-                                                        - 2.*fgkSSDModuleStiffenerPosition[1]
-                                                        - 2.*(fgkSSDStiffenerWidth-fgkSSDStiffenerToChipDist
-                                                        - 0.5*fgkSSDChipWidth)-fgkSSDChipWidth;
-  Double_t boxorigin[3] = {-0.5*ssdchipseparation,0.,0.5*SSDChipCablesHeigth}; 
-  Double_t dx = ssdchipseparation+2.*(fgkSSDChipWidth+ssdchipcablesradius[0]
-                                                         +fgkSSDChipCablesWidth[1]
-                                                         +fgkSSDChipCablesWidth[2]);
-  Double_t dy = fgkSSDChipCablesLength[1];
-  Double_t dz = SSDChipCablesHeigth;
-  TGeoBBox* ssdchipcablesmotherbox = new TGeoBBox(0.5*dx,0.5*dy,0.5*dz,boxorigin);
-  TGeoVolumeAssembly* ssdchipcablesmother = new TGeoVolumeAssembly("SSDChipCablesMother");
-//  TGeoVolume* ssdchipcablesmother = new TGeoVolume("SSDChipCablesMother",
-//                       ssdchipcablesmotherbox,fSSDAir);
-  /////////////////////////////////////////////////////////////
-  // Rotation and Translation Definition for positioning 
-  /////////////////////////////////////////////////////////////
-  TGeoRotation* ssdchipcablesrot[5];
-  ssdchipcablesrot[0] = new TGeoRotation("",90.,180.,-90);
-  ssdchipcablesrot[1] = new TGeoRotation("",0.0,90.0,0.0);
-  ssdchipcablesrot[2] = new TGeoRotation((*ssdchipcablesrot[1])*(*ssdchipcablesrot[0]));
-  ssdchipcablesrot[3] = new TGeoRotation("",180.,0.0,0.0);
-  ssdchipcablesrot[4] = new TGeoRotation((*ssdchipcablesrot[3])*(*ssdchipcablesrot[2]));
-  TGeoCombiTrans* ssdchipcablescombitrans = new TGeoCombiTrans(-ssdchipseparation,
-                                                                                                               0.,0.,ssdchipcablesrot[2]);
-  ssdchipcablesmother->AddNode(ssdchipcable[0],1,ssdchipcablesrot[4]);
-  ssdchipcablesmother->AddNode(ssdchipcable[1],1,ssdchipcablesrot[4]);
-  ssdchipcablesmother->AddNode(ssdchipcable[2],1,ssdchipcablescombitrans);
-  ssdchipcablesmother->AddNode(ssdchipcable[3],1,ssdchipcablescombitrans);
+  static const Int_t kmothervertexnumber = 8;
+  Double_t xmothervertex[kmothervertexnumber];
+  Double_t ymothervertex[kmothervertexnumber];
+  xmothervertex[0] = xvertexpoints[0][1];
+  ymothervertex[0] = yvertexpoints[0][1];
+  xmothervertex[1] = xvertexpoints[0][2+nedges/2];
+  ymothervertex[1] = yvertexpoints[0][1];
+  xmothervertex[2] = xvertexpoints[0][2+nedges/2];
+  ymothervertex[2] = yvertexpoints[0][2+nedges];
+  xmothervertex[3] = xvertexpoints[0][3+nedges];
+  ymothervertex[3] = yvertexpoints[0][3+nedges];
+  xmothervertex[4] = xvertexpoints[0][3+2*nedges];
+  ymothervertex[4] = yvertexpoints[0][3+2*nedges];
+  xmothervertex[5] = xvertexpoints[0][4+2*nedges];
+  ymothervertex[5] = yvertexpoints[0][4+2*nedges];
+  xmothervertex[6] = xvertexpoints[1][5+2*nedges];
+  ymothervertex[6] = yvertexpoints[1][5+2*nedges];
+  xmothervertex[7] = xvertexpoints[0][1];
+  ymothervertex[7] = yvertexpoints[1][5+2*nedges];
+  TGeoXtru *ssdchipcablemothershape = new TGeoXtru(2);
+  ssdchipcablemothershape->DefinePolygon(kmothervertexnumber,xmothervertex,ymothervertex);
+  ssdchipcablemothershape->DefineSection(0,-0.5*fgkSSDChipCablesLength[1]);
+  ssdchipcablemothershape->DefineSection(1,+0.5*fgkSSDChipCablesLength[1]);
+
+  cableL = new TGeoVolume("SSDChipCableMotherLeft",ssdchipcablemothershape,fSSDAir);
+  cableR = new TGeoVolume("SSDChipCableMotherRight",ssdchipcablemothershape,fSSDAir);
+
+  cableL->AddNode(ssdchipcable[0],1);
+  cableL->AddNode(ssdchipcable[1],1);
+  cableR->AddNode(ssdchipcable[2],1);
+  cableR->AddNode(ssdchipcable[3],1);  
+
   /////////////////////////////////////////////////////////////
   // Deallocating memory
   /////////////////////////////////////////////////////////////
@@ -3733,140 +3494,13 @@ TGeoVolume* AliITSv11GeometrySSD::GetSSDChipCables(Double_t SSDChipCablesHeigth,
   for(Int_t i=0; i<kssdchipcableslaynumber; i++) delete [] vertexposition[i];
   for(Int_t i=0; i<kssdchipcableslaynumber; i++) delete transvector[i];
   delete vertex; 
-  delete ssdchipcablesrot[0];
-  delete ssdchipcablesrot[1];
-  delete ssdchipcablesrot[3];
   /////////////////////////////////////////////////////////////
-  return ssdchipcablesmother;
 }
-///////////////////////////////////////////////////////////////////////////////
-TList* AliITSv11GeometrySSD::GetSSDChipSystem(){
-  /////////////////////////////////////////////////////////////
-  // SSD Chip Assembly
-  /////////////////////////////////////////////////////////////
-  TGeoVolume* ssdchipassembly = GetSSDChips();
-  TList* ssdchipsystemlist = new TList();
-//  const Int_t knedges = 20;
-  const Int_t knedges = 5;
-  const Int_t kchipsystemnumber = 2;
-  /////////////////////////////////////////////////////////////
-  // Mother Volume containing SSDChipSystem
-  /////////////////////////////////////////////////////////////
-  TGeoXtru* chipsystemothershape[kchipsystemnumber];
-  for(Int_t i=0; i<kchipsystemnumber; i++) chipsystemothershape[i] = new TGeoXtru(2);
-  const Int_t kmothervertexnumber = 12;  
-  Double_t xmothervertex[kchipsystemnumber][kmothervertexnumber];
-  Double_t ymothervertex[kchipsystemnumber][kmothervertexnumber];
-  Double_t ssdchipcablesradius[kchipsystemnumber];
-  Double_t ssdchipseparation = fgkSSDSensorLength
-                            - 2.*fgkSSDModuleStiffenerPosition[1]
-                            - 2.*(fgkSSDStiffenerWidth
-                            - fgkSSDStiffenerToChipDist-0.5*fgkSSDChipWidth);
-  for(Int_t i=0; i<kchipsystemnumber; i++)
-       ssdchipcablesradius[i] = 0.25*(fgkSSDChipCablesHeight[i+2]
-                                                  -  fgkSSDChipCablesHeight[0]
-                                                  -  fgkSSDChipCablesHeight[1]);
-  ///////////////////////
-  // Setting the vertices 
-  ///////////////////////
-  xmothervertex[0][0]  = -0.5*fgkSSDChipCablesLength[1];  
-  xmothervertex[0][1]  = xmothervertex[0][0];  
-  xmothervertex[0][2]  = (fgkSSDChipNumber-1)*(fgkSSDChipLength
-                                          + fgkSSDChipSeparationLength)+0.5*fgkSSDChipCablesLength[1];  
-  xmothervertex[0][3]  = xmothervertex[0][2];  
-  xmothervertex[0][4]  = 0.5*fgkSSDChipCablesLength[1];  
-  xmothervertex[0][5]  = xmothervertex[0][4];  
-  xmothervertex[0][6]  = xmothervertex[0][2]-0.5*fgkSSDChipCablesLength[1];  
-  xmothervertex[0][7]  = xmothervertex[0][6]; 
-  xmothervertex[0][8]  = 0.0;  
-  xmothervertex[0][9]  = xmothervertex[0][8];  
-  xmothervertex[0][10] = xmothervertex[0][4];  
-  xmothervertex[0][11] = xmothervertex[0][10];  
-  for(Int_t i=0; i<kmothervertexnumber; i++) 
-       xmothervertex[1][i] = xmothervertex[0][i]; 
-  for(Int_t i=0; i<kchipsystemnumber; i++){
-       ymothervertex[i][0]  = -0.5*fgkSSDChipWidth-ssdchipcablesradius[i]
-                                                - fgkSSDChipCablesWidth[1]-fgkSSDChipCablesWidth[2];
-       ymothervertex[i][1]  = ssdchipseparation-ymothervertex[i][0];
-       ymothervertex[i][2]  = ymothervertex[i][1];
-       ymothervertex[i][3]  = ymothervertex[i][0];
-       ymothervertex[i][4]  = ymothervertex[i][0];
-       ymothervertex[i][5]  = 0.5*fgkSSDChipWidth;
-       ymothervertex[i][6]  = ymothervertex[i][5];
-       ymothervertex[i][7]  = ssdchipseparation-0.5*fgkSSDChipWidth;
-       ymothervertex[i][8]  = ymothervertex[i][7];
-       ymothervertex[i][9]  = ymothervertex[i][5];
-       ymothervertex[i][10] = ymothervertex[i][5];
-       ymothervertex[i][11] = ymothervertex[i][4];
-  }
-  //////////////////////////////////////////////////////////
-//  TGeoVolume* chipsystemother[kchipsystemnumber];
-  TGeoVolumeAssembly* chipsystemother[kchipsystemnumber];
-  const char* chipsytemothername[kchipsystemnumber] = 
-                                       {"SSDChipSytemother1","SSDChipSytemother2"};
-  for(Int_t i=0; i<kchipsystemnumber; i++){
-    chipsystemothershape[i]->DefinePolygon(kmothervertexnumber,
-                                                                       xmothervertex[i],ymothervertex[i]);
-    chipsystemothershape[i]->DefineSection(0,-fgkSSDChipCablesHeight[i+2]
-                                                                                 -0.5*fgkSSDChipHeight);
-    chipsystemothershape[i]->DefineSection(1,0.5*fgkSSDChipHeight);
-//    chipsystemother[i] = new TGeoVolume(chipsytemothername[i],
-//                                                       chipsystemothershape[i],fSSDAir);
-    chipsystemother[i] = new TGeoVolumeAssembly(chipsytemothername[i]);
-  }
-  /////////////////////////////////////////////////////////////
-  // SSD Chip Cables
-  /////////////////////////////////////////////////////////////
-  TGeoVolume* ssdchipcables[kchipsystemnumber];
-  TGeoRotation** ssdchipcablesrot[kchipsystemnumber];
-  TGeoTranslation** ssdchipcablestrans[kchipsystemnumber];
-  TGeoCombiTrans** ssdchipcablescombitrans[kchipsystemnumber];
-  //////////////////
-  for(Int_t i=0; i<kchipsystemnumber; i++){
-               ssdchipcables[i] = 
-               GetSSDChipCables(fgkSSDChipCablesHeight[i+2],knedges);
-               ssdchipcablestrans[i] = new TGeoTranslation*[fgkSSDChipNumber];
-               ssdchipcablesrot[i] = new TGeoRotation*[fgkSSDChipNumber];
-               ssdchipcablescombitrans[i] = new TGeoCombiTrans*[fgkSSDChipNumber];
-  }
-  for(Int_t i=0; i<kchipsystemnumber; i++){
-       for(Int_t j=0; j<fgkSSDChipNumber; j++){
-               ssdchipcablestrans[i][j] = new TGeoTranslation();
-               ssdchipcablesrot[i][j] = new TGeoRotation();
-               ssdchipcablescombitrans[i][j] = new TGeoCombiTrans();
-               ssdchipcablesrot[i][j]->SetAngles(-90.0,0.0,0.0);
-               ssdchipcablestrans[i][j]->SetTranslation(j*(fgkSSDChipLength
-                                                 +                fgkSSDChipSeparationLength),
-                                                                                       0.5*fgkSSDChipWidth,
-                                                 -                                     0.5*fgkSSDChipHeight
-                                                 -                                     fgkSSDChipCablesHeight[i+2]);
-               ssdchipcablescombitrans[i][j]->SetRotation(*ssdchipcablesrot[i][j]);
-               ssdchipcablescombitrans[i][j]->SetTranslation(*ssdchipcablestrans[i][j]);
-               chipsystemother[i]->AddNode(ssdchipcables[i],j+1,ssdchipcablescombitrans[i][j]);
-       }
-       chipsystemother[i]->AddNode(ssdchipassembly,i+1);
-       ssdchipsystemlist->Add(chipsystemother[i]);     
-  }
-  /////////////////////////////////////////////////////////////
-  // Deallocating memory
-  /////////////////////////////////////////////////////////////
-  for(Int_t i=0; i<kchipsystemnumber; i++){
-       for(Int_t j=0; j<fgkSSDChipNumber; j++){
-               delete ssdchipcablesrot[i][j];
-               delete ssdchipcablestrans[i][j];
-       }
-       delete ssdchipcablesrot[i];
-       delete ssdchipcablestrans[i];
-  }
-  /////////////////////////////////////////////////////////////
-  return ssdchipsystemlist;
-}
-///////////////////////////////////////////////////////////////////////////////
-TGeoVolume* AliITSv11GeometrySSD::GetSSDChips() const{
+//_____________________________________________________________________________
+TGeoVolume* AliITSv11GeometrySSD::GetSSDChip() const{
   /////////////////////////////////////////////////////////////
   // SSD Chip Assembly Generation    
   /////////////////////////////////////////////////////////////
-  const Int_t kssdchiprownumber = 2;
   TGeoBBox* ssdchipcompshape[2];
   ssdchipcompshape[0] =  new TGeoBBox("SSDChipCompShape",
                                                                                0.5*fgkSSDChipLength,
@@ -3894,75 +3528,55 @@ TGeoVolume* AliITSv11GeometrySSD::GetSSDChips() const{
   TGeoVolume* ssdchip = new TGeoVolume("SSDChip",ssdvirtualchipshape,fSSDAir);
   /////////////////////////////////////////////////////////////
   for(Int_t i=0; i<2; i++) ssdchip->AddNode(ssdchipcomp[i],1,ssdchipcomptrans[i]);
-  Double_t ssdchipseparation[2] = {fgkSSDChipLength+fgkSSDChipSeparationLength,
-                                                 fgkSSDSensorLength-2.*fgkSSDModuleStiffenerPosition[1]
-                                  -  2.*(fgkSSDStiffenerWidth-fgkSSDStiffenerToChipDist
-                                  -  0.5*fgkSSDChipWidth)};
-  /////////////////////////////////////////////////////////////
-  // Virtual Volume containing SSDChipAssembly   
-  /////////////////////////////////////////////////////////////
-  TGeoXtru* ssdchipmothershape = new TGeoXtru(2);
-  const Int_t kssdmothervertexnumber = 2*fgkSSDChipNumber;  
-  Double_t xmothervertex[kssdmothervertexnumber];
-  Double_t ymothervertex[kssdmothervertexnumber];
-  ///////////////////////
-  // Setting the vertices 
-  ///////////////////////
-  xmothervertex[0] = -0.5*fgkSSDChipLength,ymothervertex[0] = -0.5*fgkSSDChipWidth;
-  xmothervertex[1] = xmothervertex[0], ymothervertex[1] = ssdchipseparation[1]
-                                  - ymothervertex[0];
-  xmothervertex[2] = (fgkSSDChipNumber-1)*ssdchipseparation[0]-xmothervertex[0];
-  ymothervertex[2] = ymothervertex[1];
-  xmothervertex[3] = xmothervertex[2], ymothervertex[3] = ymothervertex[0];
-  xmothervertex[4] = ssdchipseparation[0]+xmothervertex[0];
-  ymothervertex[4] = ymothervertex[0];
-  xmothervertex[5] = xmothervertex[4], ymothervertex[5] = -ymothervertex[4];
-  xmothervertex[6] = (fgkSSDChipNumber-1)*ssdchipseparation[0]
-                                  + (0.5*fgkSSDChipLength-fgkSSDChipWidth);
-  ymothervertex[6] = ymothervertex[5];
-  xmothervertex[7] = xmothervertex[6], ymothervertex[7] = ymothervertex[2]
-                                  - fgkSSDChipWidth;
-  xmothervertex[8] = -0.5*fgkSSDChipLength+fgkSSDChipWidth;
-  ymothervertex[8] = ymothervertex[7];
-  xmothervertex[9] = -0.5*fgkSSDChipLength+fgkSSDChipWidth;
-  ymothervertex[9] = ymothervertex[6];
-  xmothervertex[10] = -xmothervertex[0], ymothervertex[10] = ymothervertex[9];
-  xmothervertex[11] = xmothervertex[10], ymothervertex[11] = ymothervertex[0];
-  //////////////////////////////////////////////////////////
-  ssdchipmothershape->DefinePolygon(kssdmothervertexnumber,
-                                                                       xmothervertex,ymothervertex);
-  ssdchipmothershape->DefineSection(0,-0.5*fgkSSDChipHeight);
-  ssdchipmothershape->DefineSection(1, 0.5*fgkSSDChipHeight);
-//  TGeoVolume* ssdchipmother = new TGeoVolume("SSDChipContainer",
-//                                                       ssdchipmothershape,fSSDAir);
-  TGeoVolumeAssembly* ssdchipmother = new TGeoVolumeAssembly("SSDChipContainer");
-   /////////////////////////////////////////////////////////////
-  for(Int_t i=0; i<kssdchiprownumber; i++)
-    for(Int_t j=0; j<fgkSSDChipNumber; j++) 
-               ssdchipmother->AddNode(ssdchip,fgkSSDChipNumber*i+j+1,
-               new TGeoTranslation(j*ssdchipseparation[0],i*ssdchipseparation[1],0.));
-  return ssdchipmother;
+  return ssdchip;
 }
 /////////////////////////////////////////////////////////////////////////////////
 TList* AliITSv11GeometrySSD::GetLadderCableSegment(Double_t ssdendladdercablelength){
   /////////////////////////////////////////////////////////////
   // Method returning a List containing pointers to Ladder Cable Volumes    
+  //
+  // Return list contains 3 assemblies: cable box, cable arb shape and the end part of the cable
+  //                                    each contains 2 volumes, one for polyamide and one for aluminium
   /////////////////////////////////////////////////////////////
   const Int_t kladdercablesegmentnumber = 2;
   /////////////////////////////////////////
   // LadderSegmentBBox Volume
   /////////////////////////////////////////
-  TGeoBBox* laddercablesegmentbboxshape[kladdercablesegmentnumber];
+  static TGeoBBox* laddercablesegmentbboxshape[kladdercablesegmentnumber] = {0,0};
   const char* laddercablesegmentbboxshapename[kladdercablesegmentnumber] = 
                                {"LadderCableSegmentBBoxShape1","LadderCableSegmentBBoxShape2"};
+
+
+  const char* laddercablesegmentbboxname[kladdercablesegmentnumber] = 
+                                                 {"LadderCableSegmentBBox1","LadderCableSegmentBBox2"};
+  static TGeoVolume* laddercablesegmentbbox[kladdercablesegmentnumber];
+
+  static TGeoTranslation* laddercablesegmentbboxtrans[kladdercablesegmentnumber] = {
+                                                  new TGeoTranslation("LadderCableSegmentBBoxTrans1",
+                                                                                          0.5*fgkSSDFlexWidth[0],
+                                                                                          0.5*fgkSSDLadderCableWidth,
+                                                                      0.5*fgkSSDFlexHeight[0]),
+                                                  new TGeoTranslation("LadderCableSegmentBBoxTrans2",
+                                                                                          0.5*fgkSSDFlexWidth[0],
+                                                                                          0.5*fgkSSDLadderCableWidth,
+                                                                                          fgkSSDFlexHeight[0]
+                                                                                          +0.5*fgkSSDFlexHeight[1])
+                                                                                   };
+  static TGeoVolume* laddercablesegmentbboxassembly =                                             new TGeoVolumeAssembly("LadderCableSegmentBBoxAssembly") ;
+  static TGeoVolume* laddercablesegmentarbassembly = 
+                                                  new TGeoVolumeAssembly("LadderCableSegmentArbAssembly"); 
+
+  static TGeoArb8* laddercablesegmentarbshape[kladdercablesegmentnumber];
+  static TGeoVolume* laddercablesegmentarb[kladdercablesegmentnumber];
+
+  if (laddercablesegmentbboxshape[0] == 0) { 
+    // Initialise static shapes and volumes 
   for(Int_t i=0; i<kladdercablesegmentnumber; i++) laddercablesegmentbboxshape[i] = 
                                                  new TGeoBBox(laddercablesegmentbboxshapename[i],
                                                                           0.5*fgkSSDFlexWidth[0],
                                                                           0.5*fgkSSDLadderCableWidth,
                                                                           0.5*fgkSSDFlexHeight[i]); 
-  const char* laddercablesegmentbboxname[kladdercablesegmentnumber] = 
-                                                 {"LadderCableSegmentBBox1","LadderCableSegmentBBox2"};
-  TGeoVolume* laddercablesegmentbbox[kladdercablesegmentnumber];
+
   for(Int_t i=0; i<kladdercablesegmentnumber; i++){ 
                        laddercablesegmentbbox[i] =
                                                  new TGeoVolume(laddercablesegmentbboxname[i],
@@ -3972,20 +3586,7 @@ TList* AliITSv11GeometrySSD::GetLadderCableSegment(Double_t ssdendladdercablelen
                        laddercablesegmentbbox[i]->SetLineColor(i==0 ? fColorAl : 
                                                                                                                   fColorPolyhamide);
   }
-  TGeoTranslation* laddercablesegmentbboxtrans[kladdercablesegmentnumber];                                                                               
-  laddercablesegmentbboxtrans[0] = 
-                                                  new TGeoTranslation("LadderCableSegmentBBoxTrans1",
-                                                                                          0.5*fgkSSDFlexWidth[0],
-                                                                                          0.5*fgkSSDLadderCableWidth,
-                                                                                          0.5*fgkSSDFlexHeight[0]);
-  laddercablesegmentbboxtrans[1] = 
-                                                  new TGeoTranslation("LadderCableSegmentBBoxTrans2",
-                                                                                          0.5*fgkSSDFlexWidth[0],
-                                                                                          0.5*fgkSSDLadderCableWidth,
-                                                                                          fgkSSDFlexHeight[0]
-                                                                                          +0.5*fgkSSDFlexHeight[1]);
-  TGeoVolume* laddercablesegmentbboxassembly = 
-                                                  new TGeoVolumeAssembly("LadderCableSegmentBBoxAssembly"); 
+  
   for(Int_t i=0; i<kladdercablesegmentnumber; i++)  
                laddercablesegmentbboxassembly->AddNode(laddercablesegmentbbox[i],1,
                                                                                            laddercablesegmentbboxtrans[i]);
@@ -4010,9 +3611,9 @@ TList* AliITSv11GeometrySSD::GetLadderCableSegment(Double_t ssdendladdercablelen
   }
   Double_t laddercablesegmentwidth[2][2] = {{fgkSSDFlexHeight[0],fgkSSDFlexHeight[0]},
                                                                            {fgkSSDFlexHeight[1],fgkSSDFlexHeight[1]}}; 
-  char* laddercablesegmentarbshapename[kladdercablesegmentnumber] = 
+  const char* laddercablesegmentarbshapename[kladdercablesegmentnumber] = 
                                        {"LadderCableSegmentArbShape1","LadderCableSegmentArbShape2"};
-  TGeoArb8* laddercablesegmentarbshape[kladdercablesegmentnumber];
+
   for(Int_t i = 0; i< kladdercablesegmentnumber; i++) laddercablesegmentarbshape[i] = 
                                        GetArbShape(laddercablesegmentvertexposition[i],
                                                                laddercablesegmentwidth[i],
@@ -4020,7 +3621,7 @@ TList* AliITSv11GeometrySSD::GetLadderCableSegment(Double_t ssdendladdercablelen
                                                                laddercablesegmentarbshapename[i]);
   const char* laddercablesegmentarbname[kladdercablesegmentnumber] = 
                                                  {"LadderCableSegmentArb1","LadderCableSegmentArb2"};
-  TGeoVolume* laddercablesegmentarb[kladdercablesegmentnumber];
+
   for(Int_t i=0; i<kladdercablesegmentnumber; i++){
                         laddercablesegmentarb[i] =
                                                   new TGeoVolume(laddercablesegmentarbname[i],
@@ -4041,13 +3642,13 @@ TList* AliITSv11GeometrySSD::GetLadderCableSegment(Double_t ssdendladdercablelen
                                                         + fgkSSDFlexWidth[0],0.,0.,
                                                   new TGeoRotation((*laddercablesegmentarbrot[1])
                                                     *(*laddercablesegmentarbrot[0])));
-  TGeoVolume* laddercablesegmentarbassembly = 
-                                                  new TGeoVolumeAssembly("LadderCableSegmentArbAssembly"); 
   for(Int_t i=0; i<kladdercablesegmentnumber; i++)
   laddercablesegmentarbassembly->AddNode(laddercablesegmentarb[i],1,
                                                                                   laddercablesegmentarbcombitrans);
+  }  // End of static initialisations
 /////////////////////////////////////////
 // End Ladder Cable Volume
+// Note: this part depends explicitly on the length passed as an argument to the function
 /////////////////////////////////////////
   TGeoBBox* ladderendcablesegmentbboxshape[kladdercablesegmentnumber];
   const char* ladderendcablesegmentbboxshapename[kladdercablesegmentnumber] = 
@@ -4092,11 +3693,13 @@ TList* AliITSv11GeometrySSD::GetLadderCableSegment(Double_t ssdendladdercablelen
   laddercablesegmentlist->Add(laddercablesegmentarbassembly);
   laddercablesegmentlist->Add(ladderendcablesegmentbboxassembly);
   return laddercablesegmentlist;
-  }
+}
+
 /////////////////////////////////////////////////////////////////////////////////
 TGeoVolume* AliITSv11GeometrySSD::GetLadderCable(Int_t n, Double_t ssdendladdercablelength){
   /////////////////////////////////////////////////////////////
-  // Method generating Ladder Cable Volumes Assemblies    
+  // Method generating Ladder Cable of given length (n modules + end)
+  // Called by GetLadderCableAssembly
   /////////////////////////////////////////////////////////////
   TList* laddercablesegmentlist = GetLadderCableSegment(ssdendladdercablelength);
   TGeoVolume* laddercable = new TGeoVolumeAssembly("LadderCable"); 
@@ -4106,38 +3709,43 @@ TGeoVolume* AliITSv11GeometrySSD::GetLadderCable(Int_t n, Double_t ssdendladderc
                                                        fgkSSDLadderCableWidth-fgkSSDFlexWidth[0],
                                                        i*(fgkSSDFlexHeight[0]+fgkSSDFlexHeight[1]));
     laddercable->AddNode((TGeoVolume*)laddercablesegmentlist->At(0),i+1,laddercabletrans);  
-       if(i!=n-1) laddercable->AddNode((TGeoVolume*)laddercablesegmentlist->At(1),i+1,laddercabletrans);  
+    if(i!=n-1) laddercable->AddNode((TGeoVolume*)laddercablesegmentlist->At(1),i+1,laddercabletrans);  
   }
   TGeoTranslation* endladdercabletrans = new TGeoTranslation("EndLadderCableTrans",
                                          (n-1)*fgkCarbonFiberJunctionWidth+fgkSSDFlexWidth[0],
-                                                                fgkSSDLadderCableWidth-fgkSSDFlexWidth[0],
-                                         (n-1)*(fgkSSDFlexHeight[0]+fgkSSDFlexHeight[1]));
+                                                            fgkSSDLadderCableWidth-fgkSSDFlexWidth[0],
+                                                            (n-1)*(fgkSSDFlexHeight[0]+fgkSSDFlexHeight[1]));
   laddercable->AddNode((TGeoVolume*)laddercablesegmentlist->At(2),1,endladdercabletrans);
   return laddercable;
 }
 /////////////////////////////////////////////////////////////////////////////////
 TGeoVolume* AliITSv11GeometrySSD::GetLadderCableAssembly(Int_t n, Double_t ssdendladdercablelength){
-  /////////////////////////////////////////////////////////////
-  // Method generating Ladder Cable Volumes Assembly   
-  /////////////////////////////////////////////////////////////
-  TGeoVolume* laddercableassembly = new TGeoVolumeAssembly("LadderCableAssembly");
-  char laddercabletransname[30];
+  ///////////////////////////////////////////////////////////////////
+  // Main method generating Ladder Cable bundles containing n cables
+  ///////////////////////////////////////////////////////////////////
+  Double_t totalLength = ssdendladdercablelength+(n-1)*fgkCarbonFiberJunctionWidth+fgkSSDFlexWidth[0];
+  Double_t cableOrig[3] = {0.5*totalLength,1.5*fgkSSDLadderCableWidth-fgkSSDFlexWidth[0],0.5*n*(fgkSSDFlexHeight[0]+fgkSSDFlexHeight[1])};
+  TGeoBBox *laddercableshape = new TGeoBBox(0.5*totalLength,0.5*fgkSSDLadderCableWidth,0.5*n*(fgkSSDFlexHeight[0]+fgkSSDFlexHeight[1]),cableOrig);
+  TGeoVolume* laddercable = new TGeoVolume("LadderCableMother", laddercableshape, fSSDAir);
+  char laddercabletransname[100];
   for(Int_t i=0; i<n; i++){ 
        sprintf(laddercabletransname,"LadderCableTrans%i",i+1);
-    laddercableassembly->AddNode(GetLadderCable(n-i,ssdendladdercablelength),i+1,
-       new TGeoTranslation(laddercabletransname,i*fgkCarbonFiberJunctionWidth,0.,0.));
+       laddercable->AddNode(GetLadderCable(n-i,ssdendladdercablelength),i+1,
+                            new TGeoTranslation(laddercabletransname,i*fgkCarbonFiberJunctionWidth,0,0));
   }
-  return laddercableassembly;
+  return laddercable;
 }
 /////////////////////////////////////////////////////////////////////////////////
 TList* AliITSv11GeometrySSD::GetLadderCableAssemblyList(Int_t n, Double_t ssdendladdercablelength){
   /////////////////////////////////////////////////////////////
   // Method generating Ladder Cable List Assemblies  
+  // containing two cables bundles, i.e. P+N readout for one endcap
   /////////////////////////////////////////////////////////////  
-  const Int_t kladdercableassemblynumber = 2;
+  const Int_t kladdercableassemblynumber = 2; 
   TGeoVolume* laddercableassembly = GetLadderCableAssembly(n,ssdendladdercablelength);
   TGeoVolume* ladderCable[kladdercableassemblynumber];
-  char laddercableassemblyname[30];
+  char laddercableassemblyname[100];
   TList* laddercableassemblylist = new TList();
   for(Int_t i=0; i<kladdercableassemblynumber; i++){ 
        sprintf(laddercableassemblyname,"LadderCableAssembly%i",i+1);
@@ -4158,6 +3766,19 @@ void AliITSv11GeometrySSD::SetLadderSegment(){
   /////////////////////////////////////////////////////////////
   fladdersegment[0] = new TGeoVolumeAssembly("LadderSegment1");        
   fladdersegment[1] = new TGeoVolumeAssembly("LadderSegment2");        
+
+  /* MvL: tried to create mother volume. Requires changes in all rotations, bc xtru is always along z-axis
+  TGeoXtru *laddersegmentshape = new TGeoXtru(2);
+  static const Int_t ntrianglevtx = 3;
+  Double_t xtrianglevtx[ntrianglevtx]={-0.5*fgkCarbonFiberTriangleLength,fgkCarbonFiberTriangleLength, 0};
+  Double_t ytrianglevtx[ntrianglevtx]={0, 0, fgkCarbonFiberTriangleLength * TMath::Sin(fgkCarbonFiberTriangleAngle*TMath::DegToRad())};
+  laddersegmentshape->DefinePolygon(ntrianglevtx,xtrianglevtx,ytrianglevtx);
+  laddersegmentshape->DefineSection(0,0);
+  laddersegmentshape->DefineSection(1,fgkCarbonFiberJunctionWidth);  // MVL
+  fladdersegment[0] = new TGeoVolume("LadderSegment1",laddersegmentshape,fSSDAir);     
+  fladdersegment[1] = new TGeoVolume("LadderSegment2",laddersegmentshape,fSSDAir);     
+  */
+
   if(!fCreateMaterials) CreateMaterials();
   if(!fTransformationMatrices) CreateTransformationMatrices();
   if(!fBasicObjects) CreateBasicObjects();
@@ -4170,16 +3791,18 @@ void AliITSv11GeometrySSD::SetLadderSegment(){
                                                                                        fcarbonfibersupportmatrix[j]);
   }
   // Placing Carbon Fiber Junction
-    for(Int_t j=0; j<fgkcarbonfiberjunctionumber; j++)
+       for(Int_t j=0; j<fgkcarbonfiberjunctionumber; j++) {
         fladdersegment[i]->AddNode(fcarbonfiberjunction,j+1,
                                                                   fcarbonfiberjunctionmatrix[j]);
+  }
   // Placing Carbon Fiber Lower Support
-       for(Int_t j=0; j<fgkcarbonfiberlowersupportnumber; j++)
+    for(Int_t j=0; j<fgkcarbonfiberlowersupportnumber; j++) {
                fladdersegment[i]->AddNode(fcarbonfiberlowersupport[j],j+1,
                                                           fcarbonfiberlowersupportrans[j]);    
+    }
   // Placing SSD Sensor Support
     for(Int_t j=0; j<fgkssdsensorsupportnumber; j++) 
-       fladdersegment[i]->AddNode(j<2 ? fssdsensorsupport[0][i] :
+        fladdersegment[i]->AddNode(j<2 ? fssdsensorsupport[0][i] :
                                                                     fssdsensorsupport[1][i],
                                                           j+1,fssdsensorsupportmatrix[j]);
   // Placing SSD Cooling Tube Support 
@@ -4187,11 +3810,8 @@ void AliITSv11GeometrySSD::SetLadderSegment(){
                fladdersegment[i]->AddNode(fcoolingtubesupport,j+1,
                                                                   fcoolingtubesupportmatrix[j]);
   // Placing SSD Cooling Tube  
-       for(Int_t j=0; j<2; j++)
-               for(Int_t k=0; k<2; k++){
-               fladdersegment[i]->AddNode(fcoolingtube[0],2*j+k+1,fcoolingtubematrix[j][k]);
-               fladdersegment[i]->AddNode(fcoolingtube[j+1],k+1,fcoolingtubematrix[2+j][k]);
-               }
+       fladdersegment[i]->AddNode(fcoolingtube,1,fcoolingtubematrix[0]);
+       fladdersegment[i]->AddNode(fcoolingtube,2,fcoolingtubematrix[1]);
   // Placing SSD Hybrid
     switch(i){
        case 0: 
@@ -4204,12 +3824,12 @@ void AliITSv11GeometrySSD::SetLadderSegment(){
                break;
        }
        // Placing Cooling Block System
-    fladdersegment[i]->AddNode(fssdcoolingblocksystem,1,fcoolingblocksystematrix);
+      fladdersegment[i]->AddNode(fssdcoolingblocksystem,1,fcoolingblocksystematrix);
        // Placing SSD Flex
-       for(Int_t j=0; j<fgkflexnumber; j++){
-      fladdersegment[i]->AddNode(fssdstiffenerflex,j+1,fstiffenerflexmatrix[j]);
-      fladdersegment[i]->AddNode(fssdendflex,j+1,fendflexmatrix[j]);
-       }
+      for(Int_t j=0; j<fgkflexnumber; j++){
+       fladdersegment[i]->AddNode(fssdstiffenerflex,j+1,fstiffenerflexmatrix[j]);
+       fladdersegment[i]->AddNode(fssdendflex,j+1,fendflexmatrix[j]);
+      }
    }
 }
 ///////////////////////////////////////////////////////////////////////////////
@@ -4273,16 +3893,10 @@ void AliITSv11GeometrySSD::SetEndLadderSegment(){
   /////////////////////////////////////////////////////////////
   // End Ladder Cooling Tube Support
   /////////////////////////////////////////////////////////////
-//  fendladdersegment[0]->AddNode(fendladdercoolingtube[0],1,fendladdercoolingtubematrix[0][0]);                                                                         
-//  fendladdersegment[0]->AddNode(fendladdercoolingtube[0],2,fendladdercoolingtubematrix[0][1]);                                                                         
-  fendladdersegment[0]->AddNode(fendladdercoolingtube[1],1,fendladdercoolingtubematrix[0][2]);                                                                   
-  fendladdersegment[0]->AddNode(fendladdercoolingtube[1],2,fendladdercoolingtubematrix[0][3]);                                                                   
-  fendladdersegment[0]->AddNode(fendladdercoolingtube[2],1,fendladdercoolingtubematrix[0][4]);                                                                   
-  fendladdersegment[0]->AddNode(fendladdercoolingtube[2],2,fendladdercoolingtubematrix[0][5]);                                                                   
-  fendladdersegment[1]->AddNode(fendladdercoolingtube[3],1,fendladdercoolingtubematrix[1][0]);                                                                   
-  fendladdersegment[1]->AddNode(fendladdercoolingtube[3],2,fendladdercoolingtubematrix[1][1]);                                                                   
-  fendladdersegment[1]->AddNode(fendladdercoolingtube[4],1,fendladdercoolingtubematrix[1][2]);                                                                   
-  fendladdersegment[1]->AddNode(fendladdercoolingtube[4],2,fendladdercoolingtubematrix[1][3]);                           
+  fendladdersegment[0]->AddNode(fendladdercoolingtube[0],1,fendladdercoolingtubematrix[0][0]); 
+  fendladdersegment[0]->AddNode(fendladdercoolingtube[0],2,fendladdercoolingtubematrix[0][1]);
+  fendladdersegment[1]->AddNode(fendladdercoolingtube[1],1,fendladdercoolingtubematrix[1][0]);
+  fendladdersegment[1]->AddNode(fendladdercoolingtube[1],2,fendladdercoolingtubematrix[1][1]); 
 }
 ///////////////////////////////////////////////////////////////////////////////
 void AliITSv11GeometrySSD::SetLadder(){
@@ -4305,8 +3919,7 @@ void AliITSv11GeometrySSD::SetLadder(){
   Double_t laddercablethickness = (fgkSSDLay6SensorsNumber+2)
                                                                * (fgkSSDFlexHeight[0]+fgkSSDFlexHeight[1]);
   xmothervertex[0][0] = -0.5*fgkSSDSensorWidth;
-  ymothervertex[0][0] = -0.5*fgkCoolingTubeSupportHeight-fgkSSDModuleCoolingBlockToSensor
-                                         -  fgkSSDModuleVerticalDisalignment;
+  ymothervertex[0][0] = -0.5*fgkCoolingTubeSupportHeight-fgkSSDModuleCoolingBlockToSensor;
   xmothervertex[0][1] = xmothervertex[0][0];
   ymothervertex[0][1] = 0.0;
   xmothervertex[0][2] = - 0.5*fgkSSDModuleSensorSupportDistance-2.*fgkCoolingTubeSupportRmax
@@ -4326,16 +3939,119 @@ void AliITSv11GeometrySSD::SetLadder(){
        xmothervertex[1][i] = xmothervertex[0][i];
        ymothervertex[1][i] = ymothervertex[0][i];
   }
+///////////////////////////////////////////////////////////////////////////
+// Disalignement Mother Volume corrections 25/08/08
+///////////////////////////////////////////////////////////////////////////
+  TGeoXtru* leftladdershape1[fgkladdernumber]; 
+  TGeoXtru* leftladdershape2[fgkladdernumber]; 
+  TGeoXtru* centersensorladdershape[fgkladdernumber];  
+  TGeoXtru* rightladdershape1[fgkladdernumber];        
+  TGeoXtru* rightladdershape2[fgkladdernumber];        
+  for(Int_t i=0; i<fgkladdernumber; i++){
+    leftladdershape1[i] = new TGeoXtru(2);
+    leftladdershape2[i] = new TGeoXtru(2);
+    centersensorladdershape[i] = new TGeoXtru(2);
+    rightladdershape1[i] = new TGeoXtru(2);
+    rightladdershape2[i] = new TGeoXtru(2);
+  }
+  //////////////////////////////////////
+  // Setting the names for shapes  
+  //////////////////////////////////////
+  leftladdershape1[0]->SetName("Lay5Left1LadderSegmentContainer");
+  leftladdershape2[0]->SetName("Lay5Left2LadderSegmentContainer");
+  leftladdershape1[1]->SetName("Lay6Left1LadderSegmentContainer");
+  leftladdershape2[1]->SetName("Lay6Left2LadderSegmentContainer");
+  centersensorladdershape[0]->SetName("Lay5CenterSensorContainer");
+  centersensorladdershape[1]->SetName("Lay6CenterSensorContainer");
+  rightladdershape1[0]->SetName("Lay5Right1LadderSegmentContainer");
+  rightladdershape2[0]->SetName("Lay5Right2LadderSegmentContainer");
+  rightladdershape1[1]->SetName("Lay6Right1LadderSegmentContainer");
+  rightladdershape2[1]->SetName("Lay6Right2LadderSegmentContainer");
+  //////////////////////////////////////
+  Double_t xend1laddervertex[fgkladdernumber][kmothervertexnumber];
+  Double_t yend1laddervertex[fgkladdernumber][kmothervertexnumber];
+  Double_t xcentersensorvertex[fgkladdernumber][kmothervertexnumber];
+  Double_t ycentersensorvertex[fgkladdernumber][kmothervertexnumber];
+  Double_t xend2laddervertex[fgkladdernumber][kmothervertexnumber];
+  Double_t yend2laddervertex[fgkladdernumber][kmothervertexnumber];
+  for(Int_t i=0; i<fgkladdernumber; i++) {
+    for(Int_t j=0; j<kmothervertexnumber; j++){
+      xcentersensorvertex[i][j] = xmothervertex[i][j];
+      ycentersensorvertex[i][j] = ymothervertex[i][j];
+      xend1laddervertex[i][j] = xmothervertex[i][j];
+      yend1laddervertex[i][j] = ymothervertex[i][j];
+      xend2laddervertex[i][j] = xmothervertex[i][j];
+      yend2laddervertex[i][j] = ymothervertex[i][j];
+    }
+    // Add some space around sensors to accommodate misalignments
+    xcentersensorvertex[i][0] -= fgkSSDModuleSideDisalignment; 
+    xcentersensorvertex[i][1] =  xcentersensorvertex[0][0];
+    xcentersensorvertex[i][6] = -xcentersensorvertex[0][1];
+    xcentersensorvertex[i][7] = -xcentersensorvertex[0][0];
+    
+    ycentersensorvertex[i][0] -= fgkSSDModuleVerticalDisalignment;     
+    ycentersensorvertex[i][7] = ycentersensorvertex[0][0];
+    
+    // Center Ladder Piece
+    centersensorladdershape[i]->DefinePolygon(kmothervertexnumber,xcentersensorvertex[i],
+                                             ycentersensorvertex[i]);
+    centersensorladdershape[i]->DefineSection(0, - fgkEndLadderCarbonFiberLowerJunctionLength[1]
+                                                + 1.45*fgkSSDMountingBlockWidth);
+    centersensorladdershape[i]->DefineSection(1,   ssdlaysensorsnumber[i] * fgkCarbonFiberJunctionWidth
+                                                + fgkEndLadderCarbonFiberLowerJunctionLength[0]
+                                                - 2.4*fgkSSDMountingBlockWidth);
+
+    // Left and Right Ladder Pieces: Mother volumes around ladder mounting areas 
+
+    // Cuts off first corner (neg x)
+    xend1laddervertex[i][0] = -0.5*fgkSSDMountingBlockLength[0];
+    xend1laddervertex[i][1] = -0.5*fgkSSDMountingBlockLength[0];
+    // Cuts off last part (pos x)
+    xend2laddervertex[i][6] = 0.5*fgkSSDMountingBlockLength[0];
+    xend2laddervertex[i][7] = 0.5*fgkSSDMountingBlockLength[0];
+
+    leftladdershape1[i]->DefinePolygon(kmothervertexnumber,xend1laddervertex[i],  
+                                      yend1laddervertex[i]);
+    leftladdershape1[i]->DefineSection(0,-fgkEndLadderCarbonFiberLowerJunctionLength[1]);
+    leftladdershape1[i]->DefineSection(1,  fendladdersegmentmatrix[0][i]->GetTranslation()[2]    
+                                        - fgkEndLadderMountingBlockPosition[0]);
+    
+    leftladdershape2[i]->DefinePolygon(kmothervertexnumber,xend2laddervertex[i],  
+                                      yend2laddervertex[i]);
+    leftladdershape2[i]->DefineSection(0,  fendladdersegmentmatrix[0][i]->GetTranslation()[2]    
+                                        - fgkEndLadderMountingBlockPosition[0]); 
+    leftladdershape2[i]->DefineSection(1,- fgkEndLadderCarbonFiberLowerJunctionLength[1] 
+                                      + 1.45*fgkSSDMountingBlockWidth);  // connect to main volume at -1.6725 cm
+
+    rightladdershape1[i]->DefinePolygon(kmothervertexnumber,xend1laddervertex[i],
+                                       yend1laddervertex[i]);
+    rightladdershape1[i]->DefineSection(0,ssdlaysensorsnumber[i]*fgkCarbonFiberJunctionWidth
+                                       +fgkEndLadderCarbonFiberLowerJunctionLength[0]
+                                       -2.4*fgkSSDMountingBlockWidth);
+    rightladdershape1[i]->DefineSection(1,fendladdersegmentmatrix[1][i]->GetTranslation()[2]
+                                       + fgkEndLadderMountingBlockPosition[1]);
+
+    rightladdershape2[i]->DefinePolygon(kmothervertexnumber,xend2laddervertex[i],
+                                       yend2laddervertex[i]);
+    rightladdershape2[i]->DefineSection(0, fendladdersegmentmatrix[1][i]->GetTranslation()[2]
+                                          + fgkEndLadderMountingBlockPosition[1]);
+    rightladdershape2[i]->DefineSection(1,  ssdlaysensorsnumber[i]*fgkCarbonFiberJunctionWidth
+                                         + fgkEndLadderCarbonFiberLowerJunctionLength[0]);
+  }
+  TGeoCompositeShape* laddershapecontainer[2];
+  laddershapecontainer[0] = new TGeoCompositeShape("Lay5LadderCompositeShape",
+                                                  "Lay5Left1LadderSegmentContainer+Lay5Left2LadderSegmentContainer"
+                                                  "+Lay5CenterSensorContainer"
+                                                  "+Lay5Right1LadderSegmentContainer+Lay5Right2LadderSegmentContainer");
+  laddershapecontainer[1] = new TGeoCompositeShape("Lay6LadderCompositeShape",
+                                                  "Lay6Left1LadderSegmentContainer+Lay6Left2LadderSegmentContainer"
+                                                  "+Lay6CenterSensorContainer"
+                                                  "+Lay6Right1LadderSegmentContainer+Lay6Right2LadderSegmentContainer");
   const char* laddername[fgkladdernumber] = {"ITSssdLay5Ladd","ITSssdLay6Ladd"};
   for(Int_t i=0; i<fgkladdernumber; i++){
-       laddershape[i]->DefinePolygon(kmothervertexnumber,xmothervertex[i],
-                                                                   ymothervertex[i]);
-    laddershape[i]->DefineSection(0,-fgkEndLadderCarbonFiberLowerJunctionLength[1]);
-    laddershape[i]->DefineSection(1,ssdlaysensorsnumber[i]*fgkCarbonFiberJunctionWidth
-                                                                                       +fgkEndLadderCarbonFiberLowerJunctionLength[0]);
-    fladder[i] = new TGeoVolume(laddername[i],laddershape[i],fSSDAir);
-       fladder[i]->SetLineColor(4);
- }
+    fladder[i] = new TGeoVolume(laddername[i],laddershapecontainer[i],fSSDAir);
+    fladder[i]->SetLineColor(4);
+  }
 ///////////////////////////////////////////////////////////////////////////
  if(!fCreateMaterials) CreateMaterials();
  if(!fTransformationMatrices) CreateTransformationMatrices();
@@ -4360,7 +4076,7 @@ void AliITSv11GeometrySSD::SetLadder(){
        ///////////////////////////////                                         
        /// Placing End Ladder Segment
        ///////////////////////////////         
-    fladder[i]->AddNode(fendladdersegment[0],1,fendladdersegmentmatrix[0][i]);
+       fladder[i]->AddNode(fendladdersegment[0],1,fendladdersegmentmatrix[0][i]);
        fladder[i]->AddNode(fendladdersegment[1],1,fendladdersegmentmatrix[1][i]);
    }
 /////////////////////////////////////////////////////////////////////////////                                          
@@ -4404,13 +4120,15 @@ void AliITSv11GeometrySSD::SetLadder(){
                                                         + fgkEndLadderCarbonFiberLowerJunctionLength[0]-0.000001*kendladdercablecorrection;
   TList* laddercableassemblylist[4];
   const Int_t kendladdercablesnumber = 4;
+  TGeoRotation *laddercablerot = new TGeoRotation();
+  laddercablerot->SetAngles(90.,60.,-90.);
   for(Int_t i=0; i<fgkladdercablesnumber; i++)
        for(Int_t j=0; j<kendladdercablesnumber; j++){
                laddercableassemblylist[j] = 
                GetLadderCableAssemblyList(sidecablenumber[i][j<2?0:1],
                                                                   ssdendladdercablelength[j]);
-//         fladder[i]->AddNode((TGeoVolume*)laddercableassemblylist[j]->At(j%2==0?0:1),
-//                                                                     j<2?1:2,fladdercablematrix[i][j]);
+                       fladder[i]->AddNode((TGeoVolume*)laddercableassemblylist[j]->At(j%2==0?0:1),
+                                                                       j<2?1:2,fladdercablematrix[i][j]);
   }
 }
 ////////////////////////////////////////////////////////////////////////////////
@@ -4442,7 +4160,7 @@ void AliITSv11GeometrySSD::SetLayer(){
   /////////////////////////////////////////////////////////////
   // Deallocating memory
   /////////////////////////////////////////////////////////////
-  for(Int_t i=0; i<fgklayernumber; i++) delete ladderindex[i];
+  for(Int_t i=0; i<fgklayernumber; i++) delete [] ladderindex[i];
 }
 ////////////////////////////////////////////////////////////////////////////////
 void AliITSv11GeometrySSD::Layer5(TGeoVolume* moth){
@@ -4450,7 +4168,7 @@ void AliITSv11GeometrySSD::Layer5(TGeoVolume* moth){
   // Insert the layer 5 in the mother volume. 
   /////////////////////////////////////////////////////////////
   if (! moth) {
-    printf("Error::AliITSv11GeometrySSD: Can't insert layer5, mother is null!\n");
+    AliError("Can't insert layer5, mother is null!\n");
     return;
   };
   if(!fSSDLayer5) SetLayer();
@@ -4465,7 +4183,7 @@ void AliITSv11GeometrySSD::Layer6(TGeoVolume* moth){
   // Insert the layer 6 in the mother volume. 
   /////////////////////////////////////////////////////////////
   if (! moth) {
-    printf("Error::AliITSv11GeometrySSD: Can't insert layer6, mother is null!\n");
+    AliError("AliITSv11GeometrySSD: Can't insert layer6, mother is null!\n");
     return;
   };
   if(!fSSDLayer6) SetLayer();
@@ -4491,17 +4209,17 @@ void AliITSv11GeometrySSD::Layer6(TGeoVolume* moth){
   for(Int_t i=0; i<fgklayernumber; i++){
        mountingblockratio[i] = fgkSSDMountingBlockLength[0]/fgkMountingBlockSupportRadius[i];
     mountingsupportedge[i]    = 0.5*fgkMountingBlockSupportRadius[i]
-                                                         *(TMath::Sqrt(4.0-TMath::Power(mountingblockratio[i],2))
+                                                          * (TMath::Sqrt((2.-mountingblockratio[i])*(2.+mountingblockratio[i]))
                                                          * TMath::Sin(2.0*TMath::Pi()/kssdlayladdernumber[i])
                                                          - mountingblockratio[i]*(1.0+TMath::Cos(2.0*TMath::Pi()
                                                          / kssdlayladdernumber[i])));
     theta[i] = TMath::ASin(0.5*mountingblockratio[i]+mountingsupportedge[i]/fgkMountingBlockSupportRadius[i]);
     phi[i]   = TMath::ASin(0.5*mountingblockratio[i]);
        mountingsupportedgevector[i] = new TVector3();
-    mountingsupportedgevector[i]->SetX(-0.5*fgkSSDMountingBlockLength[0]);
-       mountingsupportedgevector[i]->SetY(fgkMountingBlockSupportRadius[i]*TMath::Sqrt(1.
-                                                                -TMath::Power(mountingsupportedgevector[i]->X()
-                                                                /                         fgkMountingBlockSupportRadius[i],2)));
+        mountingsupportedgevector[i]->SetX(-0.5*fgkSSDMountingBlockLength[0]);
+       mountingsupportedgevector[i]->SetY(fgkMountingBlockSupportRadius[i]*TMath::Sqrt(
+                                                       (1.-mountingsupportedgevector[i]->X()/fgkMountingBlockSupportRadius[i])*
+                                                       (1.+mountingsupportedgevector[i]->X()/fgkMountingBlockSupportRadius[i])));
     psi0[i] = 0.5*TMath::Pi()-phi[i];  
     deltapsi[i] = (theta[i]+phi[i])/nedges;
   }
@@ -4580,10 +4298,10 @@ void AliITSv11GeometrySSD::Layer6(TGeoVolume* moth){
   TGeoVolume* centermountingblocksupport[fgklayernumber];
   TGeoVolume* sideladdersupportpiece[fgklayernumber];
   TGeoVolume* centerladdersupportpiece[fgklayernumber];
-  char sidemountingblockname[40];
-  char centermountingblockname[40];
-  char sideladdersupportpiecename[40];
-  char centerladdersupportpiecename[40];
+  char sidemountingblockname[100];
+  char centermountingblockname[100];
+  char sideladdersupportpiecename[100];
+  char centerladdersupportpiecename[100];
   for(Int_t i=0; i<fgklayernumber; i++){ 
        sprintf(sidemountingblockname,"MountingBlockSupportSideLay%dArc",i+5);
        sprintf(centermountingblockname,"MountingBlockSupportCenterLay%dArc",i+5);
@@ -4605,6 +4323,7 @@ void AliITSv11GeometrySSD::Layer6(TGeoVolume* moth){
        centermountingsupportshape[i]->DefineSection(0,0.);
     centermountingsupportshape[i]->DefineSection(1,fgkMountingBlockSupportWidth[1]
                                                                                                  -fgkMountingBlockSupportWidth[0]);
+
     centermountingblocksupport[i] = new TGeoVolume(centermountingblockname,
                                                                          centermountingsupportshape[i],
                                                                                  fSSDAlCoolBlockMedium);
@@ -4650,8 +4369,8 @@ void AliITSv11GeometrySSD::Layer6(TGeoVolume* moth){
   Double_t mountingblockpieceupyvertex[fgklayernumber][8];
   Double_t mountingblockpiecedownxvertex[fgklayernumber][8];
   Double_t mountingblockpiecedownyvertex[fgklayernumber][8];
-  char mountingblockpiecedownname[34];
-  char mountingblockpieceupname[34];
+  char mountingblockpiecedownname[100];
+  char mountingblockpieceupname[100];
   for(Int_t i=0; i<fgklayernumber; i++){
     ///////////////////////////
     // Mounting Block Down Vertex
@@ -4660,13 +4379,13 @@ void AliITSv11GeometrySSD::Layer6(TGeoVolume* moth){
     sprintf(mountingblockpiecedownname,"MountingBlockPieceDownLay%d",i+5);
        mountingblockpiecedownxvertex[i][0] = -0.5*fgkSSDMountingBlockLength[0];        
        mountingblockpiecedownyvertex[i][0] = fgkMountingBlockSupportRadius[i]
-                                                                               + fgkMountingBlockSupportDownHeight;
+                                             + fgkMountingBlockSupportDownHeight 
+                                              - fgkSSDLadderVerticalDisalignment;
        mountingblockpiecedownxvertex[i][1] = mountingblockpiecedownxvertex[i][0];      
        mountingblockpiecedownyvertex[i][1] = mountingblockpiecedownyvertex[i][0]
                                                                                + fgkSSDMountingBlockHeight[1]
                                                                                - 0.5*fgkCoolingTubeSupportHeight
-                                                                               - fgkSSDModuleCoolingBlockToSensor
-                                                                               - 2.*fgkSSDModuleVerticalDisalignment;
+                                                                               - fgkSSDModuleCoolingBlockToSensor;
        mountingblockpiecedownxvertex[i][2] = 0.5*fgkSSDMountingBlockLength[0]; 
        mountingblockpiecedownyvertex[i][2] = mountingblockpiecedownyvertex[i][1];
        mountingblockpiecedownxvertex[i][3] = mountingblockpiecedownxvertex[i][2];      
@@ -4688,6 +4407,7 @@ void AliITSv11GeometrySSD::Layer6(TGeoVolume* moth){
        mountingblockpiecedown[i] = new TGeoVolume(mountingblockpiecedownname,
                                                                 mountingblockpiecedownshape[i],fSSDMountingBlockMedium);
        mountingblockpiecedown[i]->SetLineColor(fColorG10);
+
     ///////////////////////////
     // Mounting Block Up Vertex
     ///////////////////////////
@@ -4695,13 +4415,13 @@ void AliITSv11GeometrySSD::Layer6(TGeoVolume* moth){
        sprintf(mountingblockpieceupname,"MountingBlockPieceUpLay%d",i+5);
        mountingblockpieceupxvertex[i][0] = -0.5*fgkSSDMountingBlockLength[0];  
        mountingblockpieceupyvertex[i][0] = fgkMountingBlockSupportRadius[i]
-                                                                               + fgkMountingBlockSupportUpHeight[i];
+                                                                               + fgkMountingBlockSupportUpHeight[i]
+                                              - fgkSSDLadderVerticalDisalignment;
        mountingblockpieceupxvertex[i][1] = mountingblockpieceupxvertex[i][0];  
        mountingblockpieceupyvertex[i][1] = mountingblockpieceupyvertex[i][0]
                                                                                + fgkSSDMountingBlockHeight[1]
                                                                                - 0.5*fgkCoolingTubeSupportHeight
-                                                                               - fgkSSDModuleCoolingBlockToSensor
-                                                                               - 2.*fgkSSDModuleVerticalDisalignment;
+                                                                               - fgkSSDModuleCoolingBlockToSensor;
        mountingblockpieceupxvertex[i][2] = 0.5*fgkSSDMountingBlockLength[0];   
        mountingblockpieceupyvertex[i][2] = mountingblockpieceupyvertex[i][1];
        mountingblockpieceupxvertex[i][3] = mountingblockpieceupxvertex[i][2];  
@@ -4716,6 +4436,7 @@ void AliITSv11GeometrySSD::Layer6(TGeoVolume* moth){
        mountingblockpieceupyvertex[i][6] = mountingblockpieceupyvertex[i][5];
        mountingblockpieceupxvertex[i][7] = mountingblockpieceupxvertex[i][6];  
        mountingblockpieceupyvertex[i][7] = mountingblockpieceupyvertex[i][0];
+
        mountingblockpieceupshape[i]->DefinePolygon(8,mountingblockpieceupxvertex[i],
                                                                                                         mountingblockpieceupyvertex[i]);
        mountingblockpieceupshape[i]->DefineSection(0,0.0);
@@ -4735,8 +4456,8 @@ void AliITSv11GeometrySSD::Layer6(TGeoVolume* moth){
   Double_t mountingblocksupportrapezoidownyvertex[fgklayernumber][5];
   Double_t mountingblocksupportrapezoidupxvertex[fgklayernumber][5];
   Double_t mountingblocksupportrapezoidupyvertex[fgklayernumber][5];
-  char mountingblocksupportrapezoidowname[40];
-  char mountingblocksupportrapezoidupname[40];
+  char mountingblocksupportrapezoidowname[100];
+  char mountingblocksupportrapezoidupname[100];
   Double_t scalefactor = 3./4.;
   for(Int_t i=0; i<fgklayernumber; i++){
   ////////////////////////////////////////////
@@ -4757,6 +4478,7 @@ void AliITSv11GeometrySSD::Layer6(TGeoVolume* moth){
        mountingblocksupportrapezoidownyvertex[i][3] = mountingblocksupportrapezoidownyvertex[i][2];
        mountingblocksupportrapezoidownxvertex[i][4] = mountingblocksupportrapezoidownxvertex[i][3];
        mountingblocksupportrapezoidownyvertex[i][4] = mountingblocksupportrapezoidownyvertex[i][0];
+
        mountingblocksupportrapezoidownshape[i]->DefinePolygon(5,mountingblocksupportrapezoidownxvertex[i],
                                                                                                               mountingblocksupportrapezoidownyvertex[i]);
        mountingblocksupportrapezoidownshape[i]->DefineSection(0,fgkMountingBlockSupportWidth[1]
@@ -4785,6 +4507,7 @@ void AliITSv11GeometrySSD::Layer6(TGeoVolume* moth){
        mountingblocksupportrapezoidupyvertex[i][3] = mountingblocksupportrapezoidupyvertex[i][2];
        mountingblocksupportrapezoidupxvertex[i][4] = mountingblocksupportrapezoidupxvertex[i][3];
        mountingblocksupportrapezoidupyvertex[i][4] = mountingblocksupportrapezoidupyvertex[i][0];
+
        mountingblocksupportrapezoidupshape[i]->DefinePolygon(5,mountingblocksupportrapezoidupxvertex[i],
                                                                                                               mountingblocksupportrapezoidupyvertex[i]);
        mountingblocksupportrapezoidupshape[i]->DefineSection(0,fgkMountingBlockSupportWidth[1]
@@ -4800,8 +4523,8 @@ void AliITSv11GeometrySSD::Layer6(TGeoVolume* moth){
   for(Int_t i=0; i<fgklayernumber; i++) mountingblocksupportboxup[i] = new TGeoVolume*[3];
   Double_t boxoriginup[fgklayernumber][2][3];
   Double_t boxorigindown[fgklayernumber][2][3];
-  char mountingblocksupportboxdownname[34];
-  char mountingblocksupportboxupname[34];
+  char mountingblocksupportboxdownname[100];
+  char mountingblocksupportboxupname[100];
   TGeoRotation* mountingblocksupportrot = new TGeoRotation();
   mountingblocksupportrot->SetAngles(90.,180.,-90);
   TGeoRotation* globalrefladdersupportrot = new TGeoRotation();
@@ -4821,10 +4544,9 @@ void AliITSv11GeometrySSD::Layer6(TGeoVolume* moth){
   TGeoXtru* downmotherladdersupportshape[fgklayernumber];
   TGeoVolume* downmotherladdersupport[fgklayernumber]; 
   TGeoXtru* upmotherladdersupportshape[fgklayernumber];
-//  TGeoVolume* upmotherladdersupport[fgklayernumber]; 
-  TGeoVolumeAssembly* upmotherladdersupport[fgklayernumber];   
-  char upmotheladdersupportname[30];
-  char downmotheladdersupportname[30];
+  TGeoVolume* upmotherladdersupport[fgklayernumber]; 
+  char upmotheladdersupportname[100];
+  char downmotheladdersupportname[100];
   for(Int_t i=0; i<fgklayernumber; i++){
        xmothervertex[i][0] = -0.5*fgkSSDMountingBlockLength[0]
                                                    -  mountingsupportedge[i];
@@ -4844,19 +4566,25 @@ void AliITSv11GeometrySSD::Layer6(TGeoVolume* moth){
        ymothervertex[i][6] = ymothervertex[i][5];
        xmothervertex[i][7] = xmothervertex[i][6];
        ymothervertex[i][7] = ymothervertex[i][0];
+
        sprintf(downmotheladdersupportname,"LadderSupportDownLay%d",i+5);
        sprintf(upmotheladdersupportname,"LadderSupportUpLay%d",i+5);
-    downmotherladdersupportshape[i] = new TGeoXtru(2);
+
+       downmotherladdersupportshape[i] = new TGeoXtru(2);
        downmotherladdersupportshape[i]->DefinePolygon(8,xmothervertex[i],ymothervertex[i]);
        downmotherladdersupportshape[i]->DefineSection(0,ysidevertex[i][0]);
-    downmotherladdersupportshape[i]->DefineSection(1,ysidevertex[i][1]
+       downmotherladdersupportshape[i]->DefineSection(1,ysidevertex[i][1]
                                                                   +                       fgkMountingBlockSupportDownHeight
                                                                   +                       fgkSSDMountingBlockHeight[1]
                                                                   -                       0.5*fgkCoolingTubeSupportHeight
                                                                   -                       fgkSSDModuleCoolingBlockToSensor
-                                                                  -                       2.*fgkSSDModuleVerticalDisalignment);
-    downmotherladdersupport[i] = new TGeoVolume(downmotheladdersupportname,
-                                                                         downmotherladdersupportshape[i],fSSDAir);
+                                                      - fgkSSDLadderVerticalDisalignment);
+       
+//                                                - fgkSSDModuleVerticalDisalignment);
+       //downmotherladdersupport[i] = new TGeoVolumeAssembly(downmotheladdersupportname);
+
+        downmotherladdersupport[i] = new TGeoVolume(downmotheladdersupportname,
+                                                                         downmotherladdersupportshape[i],fSSDAir);
     upmotherladdersupportshape[i] = new TGeoXtru(2);
        upmotherladdersupportshape[i]->DefinePolygon(8,xmothervertex[i],ymothervertex[i]);
        upmotherladdersupportshape[i]->DefineSection(0,ysidevertex[i][0]);
@@ -4865,10 +4593,10 @@ void AliITSv11GeometrySSD::Layer6(TGeoVolume* moth){
                                                                   +                       fgkSSDMountingBlockHeight[1]
                                                                   -                       0.5*fgkCoolingTubeSupportHeight
                                                                   -                       fgkSSDModuleCoolingBlockToSensor
-                                                                  -               2.*fgkSSDModuleVerticalDisalignment);
-       upmotherladdersupport[i] = new TGeoVolumeAssembly(upmotheladdersupportname);
-//    upmotherladdersupport[i] = new TGeoVolume(upmotheladdersupportname,
-//                                                                                       upmotherladdersupportshape[i],fSSDAir);
+                                                - fgkSSDLadderVerticalDisalignment);
+
+     upmotherladdersupport[i] = new TGeoVolume(upmotheladdersupportname,
+                                                                                         upmotherladdersupportshape[i],fSSDAir);
   }
   for(Int_t i=0; i<fgklayernumber; i++){
        /////////////////////////
@@ -4876,7 +4604,8 @@ void AliITSv11GeometrySSD::Layer6(TGeoVolume* moth){
        /////////////////////////
        boxorigindown[i][0][0] = -0.5*mountingsupportedge[i];
        boxorigindown[i][0][1] =  fgkMountingBlockSupportRadius[i]
-                                                  +  0.5*fgkMountingBlockSupportDownHeight;
+                                                  +  0.5*fgkMountingBlockSupportDownHeight
+                                 - 0.5*fgkSSDLadderVerticalDisalignment;
        boxorigindown[i][0][2] =  fgkMountingBlockSupportWidth[1]
                                                   -  0.5*fgkMountingBlockSupportWidth[0];
   
@@ -4887,13 +4616,13 @@ void AliITSv11GeometrySSD::Layer6(TGeoVolume* moth){
                                                   
        boxoriginup[i][0][0] = -0.5*mountingsupportedge[i];
        boxoriginup[i][0][1] = fgkMountingBlockSupportRadius[i]
-                                                + 0.5*fgkMountingBlockSupportUpHeight[i];
+                              + 0.5*fgkMountingBlockSupportUpHeight[i]
+                              - 0.5*fgkSSDLadderVerticalDisalignment;
        boxoriginup[i][0][2] = fgkMountingBlockSupportWidth[1]
                                                 - 0.5*fgkMountingBlockSupportWidth[0];
   
        boxoriginup[i][1][0] = 0.0;
-       boxoriginup[i][1][1] = fgkMountingBlockSupportRadius[i]
-                                                + 0.5*fgkMountingBlockSupportUpHeight[i];
+       boxoriginup[i][1][1] = boxoriginup[i][0][1];
        boxoriginup[i][1][2] = 0.5*(fgkMountingBlockSupportWidth[1]
                                                 - fgkMountingBlockSupportWidth[0]);
   
@@ -4902,28 +4631,28 @@ void AliITSv11GeometrySSD::Layer6(TGeoVolume* moth){
        /////////////////////////
        mountingblocksupportboxdownshape[i][0] = new TGeoBBox(0.5*(mountingsupportedge[i]
                                                                                 +  fgkSSDMountingBlockLength[0]),
-                                                                                       0.5*fgkMountingBlockSupportDownHeight,
+                                                                                       0.5*fgkMountingBlockSupportDownHeight - 0.5*fgkSSDLadderVerticalDisalignment,
                                                                                        0.5*fgkMountingBlockSupportWidth[0],
                                                                                        boxorigindown[i][0]);
-    mountingblocksupportboxdownshape[i][1] = new TGeoBBox(0.5*fgkSSDMountingBlockLength[0],
-                                                                                       0.5*fgkMountingBlockSupportDownHeight,
+       mountingblocksupportboxdownshape[i][1] = new TGeoBBox(0.5*fgkSSDMountingBlockLength[0],
+                                                                                       0.5*fgkMountingBlockSupportDownHeight - 0.5*fgkSSDLadderVerticalDisalignment,
                                                                                        0.5*(fgkMountingBlockSupportWidth[1]
                                                                                 -  fgkMountingBlockSupportWidth[0]),
                                                                                        boxorigindown[i][1]);
                                                                                        
        mountingblocksupportboxupshape[i][0] = new TGeoBBox(0.5*(mountingsupportedge[i]
                                                                                 +  fgkSSDMountingBlockLength[0]),
-                                                                                       0.5*fgkMountingBlockSupportUpHeight[i],
+                                                                                       0.5*fgkMountingBlockSupportUpHeight[i] - 0.5*fgkSSDLadderVerticalDisalignment,
                                                                                        0.5*fgkMountingBlockSupportWidth[0],
                                                                                        boxoriginup[i][0]);
-                                                                                       
+
        mountingblocksupportboxupshape[i][1] = new TGeoBBox(0.5*fgkSSDMountingBlockLength[0],
-                                                                                       0.5*fgkMountingBlockSupportUpHeight[i],
+                                                                                       0.5*fgkMountingBlockSupportUpHeight[i] - 0.5*fgkSSDLadderVerticalDisalignment,
                                                                                        0.5*(fgkMountingBlockSupportWidth[1]
                                                                     -  fgkMountingBlockSupportWidth[0]),
                                                                                        boxoriginup[i][1]);
        ///////////////////////////////////////
-    // Adding the Volumes to Mother Volume    
+       // Adding the Volumes to Mother Volume    
        ///////////////////////////////////////
        for(Int_t j=0; j<2; j++){
                sprintf(mountingblocksupportboxdownname,"MountingBlockSuppDownLay%dBox%d",i+5,j+1);
@@ -4938,7 +4667,7 @@ void AliITSv11GeometrySSD::Layer6(TGeoVolume* moth){
                mountingblocksupportboxup[i][j]->SetLineColor(9);
                for(Int_t k=0; k<2; k++){
                        downmotherladdersupport[i]->AddNode(mountingblocksupportboxdown[i][j],k+1,laddersupportmatrix[k]);
-//                     upmotherladdersupport[i]->AddNode(mountingblocksupportboxup[i][j],k+1,laddersupportmatrix[k]);
+                       upmotherladdersupport[i]->AddNode(mountingblocksupportboxup[i][j],k+1,laddersupportmatrix[k]);
                }
        }
        for(Int_t k=0; k<2; k++){
@@ -4946,14 +4675,14 @@ void AliITSv11GeometrySSD::Layer6(TGeoVolume* moth){
                downmotherladdersupport[i]->AddNode(sidemountingblocksupport[i],k+1,laddersupportmatrix[k]);
                downmotherladdersupport[i]->AddNode(sideladdersupportpiece[i],k+1,laddersupportmatrix[k]);
                downmotherladdersupport[i]->AddNode(centerladdersupportpiece[i],k+1,laddersupportmatrix[k]);
-           downmotherladdersupport[i]->AddNode(mountingblockpiecedown[i],k+1,laddersupportmatrix[k]);
+               downmotherladdersupport[i]->AddNode(mountingblockpiecedown[i],k+1,laddersupportmatrix[k]);
                downmotherladdersupport[i]->AddNode(mountingblocksupportrapezoidown[i],k+1,laddersupportmatrix[k]);
                upmotherladdersupport[i]->AddNode(centermountingblocksupport[i],k+1,laddersupportmatrix[k]);
-//             upmotherladdersupport[i]->AddNode(sidemountingblocksupport[i],k+1,laddersupportmatrix[k]);
-//             upmotherladdersupport[i]->AddNode(sideladdersupportpiece[i],k+1,laddersupportmatrix[k]);
-//             upmotherladdersupport[i]->AddNode(centerladdersupportpiece[i],k+1,laddersupportmatrix[k]);
-//             upmotherladdersupport[i]->AddNode(mountingblockpieceup[i],k+1,laddersupportmatrix[k]);
-//             upmotherladdersupport[i]->AddNode(mountingblocksupportrapezoidup[i],k+1,laddersupportmatrix[k]);
+               upmotherladdersupport[i]->AddNode(sidemountingblocksupport[i],k+1,laddersupportmatrix[k]);
+               upmotherladdersupport[i]->AddNode(sideladdersupportpiece[i],k+1,laddersupportmatrix[k]);
+               upmotherladdersupport[i]->AddNode(centerladdersupportpiece[i],k+1,laddersupportmatrix[k]);
+               upmotherladdersupport[i]->AddNode(mountingblockpieceup[i],k+1,laddersupportmatrix[k]);
+               upmotherladdersupport[i]->AddNode(mountingblocksupportrapezoidup[i],k+1,laddersupportmatrix[k]);
        }
   }
   TList* laddersupportlist = new TList();
@@ -4978,15 +4707,17 @@ void AliITSv11GeometrySSD::Layer6(TGeoVolume* moth){
        delete [] ysidelowervertex[i];
        delete [] xcenterlowervertex[i];
        delete [] ycenterlowervertex[i];
+       delete [] xmothervertex[i];
+       delete [] ymothervertex[i];
   }
-  delete xsidevertex;
-  delete ysidevertex;
-  delete xcentervertex;
-  delete ycentervertex;
-  delete xsidelowervertex;
-  delete ysidelowervertex;
-  delete xcenterlowervertex;
-  delete ycenterlowervertex;
+  delete [] xsidevertex;
+  delete [] ysidevertex;
+  delete [] xcentervertex;
+  delete [] ycentervertex;
+  delete [] xsidelowervertex;
+  delete [] ysidelowervertex;
+  delete [] xcenterlowervertex;
+  delete [] ycenterlowervertex;
   delete globalrefladdersupportrot;
   delete mountingblocksupportrot;
   /////////////////////
@@ -5011,7 +4742,7 @@ void AliITSv11GeometrySSD::SetLadderSupport(Int_t nedges){
   for(Int_t i=0; i<fgklayernumber; i++){
        mountingblockratio[i] = fgkSSDMountingBlockLength[0]/fgkMountingBlockSupportRadius[i];
     mountingsupportedge[i]    = 0.5*fgkMountingBlockSupportRadius[i]
-                                                         *(TMath::Sqrt(4.0-TMath::Power(mountingblockratio[i],2))
+                                                          *(TMath::Sqrt((2.-mountingblockratio[i])*(2.+mountingblockratio[i]))
                                                          * TMath::Sin(2.0*TMath::Pi()/kssdlayladdernumber[i])
                                                          - mountingblockratio[i]*(1.0+TMath::Cos(2.0*TMath::Pi()
                                                          / kssdlayladdernumber[i])));
@@ -5067,8 +4798,8 @@ void AliITSv11GeometrySSD::SetLadderSupport(Int_t nedges){
        ringsupportvertex[i][2*kssdlayladdernumber[i]+1] = new TVector3(*ringsupportvertex[i][0]);
     for(Int_t j=0; j<nedges+1; j++){
                ringsupportvertex[i][2*kssdlayladdernumber[i]+2+j] = 
-                       new TVector3((ringsupportvertex[i][0]->Y()-fgkLadderSupportHeigth)*CosD(90.0-j*angle),
-                                                (ringsupportvertex[i][0]->Y()-fgkLadderSupportHeigth)*SinD(90.0-j*angle));
+                       new TVector3((ringsupportvertex[i][0]->Y()-fgkLadderSupportHeight)*CosD(90.0-j*angle),
+                                                (ringsupportvertex[i][0]->Y()-fgkLadderSupportHeight)*SinD(90.0-j*angle));
        }
   }
   Double_t **xmothervertex = new Double_t*[fgklayernumber];
@@ -5084,7 +4815,7 @@ void AliITSv11GeometrySSD::SetLadderSupport(Int_t nedges){
 ////////////////////////////////////////////////////////////////////////////////
 // Start Corrections 13/06/08
 ////////////////////////////////////////////////////////////////////////////////
-  char lowerladderpconsupportname[30];
+  char lowerladderpconsupportname[100];
   TGeoPcon* lowerladderpconsupportshape[fgklayernumber];
   TGeoVolume* lowerladderpconsupport[fgklayernumber]; 
   Double_t lowerladderpconezsection[2] = {0.,fgkMountingBlockSupportWidth[1]};
@@ -5095,7 +4826,7 @@ void AliITSv11GeometrySSD::SetLadderSupport(Int_t nedges){
   for(Int_t i=0; i<fgklayernumber; i++){
        lowerladderpconradiusmax[i] = fgkMountingBlockSupportRadius[i]
                                                                *                          TMath::Cos(theta[i]);
-    lowerladderpconradiusmin[i] = lowerladderpconradiusmax[i]-fgkLadderSupportHeigth;
+    lowerladderpconradiusmin[i] = lowerladderpconradiusmax[i]-fgkLadderSupportHeight;
   } 
   for(Int_t i=0; i<fgklayernumber; i++){
 ///////////////////////////  Modified Version ?///////////////////
@@ -5142,8 +4873,8 @@ void AliITSv11GeometrySSD::SetLadderSupport(Int_t nedges){
        delete [] xmothervertex[i];
        delete [] ymothervertex[i];
   }
-  delete xmothervertex;
-  delete ymothervertex; 
+  delete [] xmothervertex;
+  delete [] ymothervertex; 
   delete globalrot;
   for(Int_t i=0; i<fgklayernumber; i++){
        for(Int_t j=0; j<kssdlayladdernumber[i]; j++)
@@ -5162,12 +4893,12 @@ void AliITSv11GeometrySSD::SetLadderSupport(Int_t nedges){
   const Int_t kendcapcoverplatesmallholenumber[2] = {4,9}; 
   Double_t holesection[2] = {-0.5*fgkEndCapCoverPlateThickness,
                                                          0.5*fgkEndCapCoverPlateThickness};
-  TGeoXtru* endcapcoverplatesmallholeshape = GetHoleShape(fgkEndCapCoverPlateSmallHoleRadius,
+  TGeoShape* endcapcoverplatesmallholeshape = GetHoleShape(fgkEndCapCoverPlateSmallHoleRadius,
                                                                                                              nendcapcoverplateholedges,holesection);
   TGeoVolume* endcapcoverplatesmallhole = new TGeoVolume("EndCapCoverPlateSmallHole",
                                                                                  endcapcoverplatesmallholeshape,fSSDAlCoolBlockMedium);
   endcapcoverplatesmallhole->SetLineColor(6);
-  TGeoXtru* endcapcoverplatebigholeshape = GetHoleShape(fgkEndCapCoverPlateBigHoleRadius,
+  TGeoShape* endcapcoverplatebigholeshape = GetHoleShape(fgkEndCapCoverPlateBigHoleRadius,
                                                                                                              nendcapcoverplateholedges,holesection);
   TGeoVolume* endcapcoverplatebighole = new TGeoVolume("EndCapCoverPlateBigHole",
                                                                                  endcapcoverplatebigholeshape,fSSDAlCoolBlockMedium);
@@ -5251,7 +4982,7 @@ void AliITSv11GeometrySSD::SetLadderSupport(Int_t nedges){
                                                                           fSSDAlCoolBlockMedium);
   endcapfillingbox->SetLineColor(6);
   ////////////////////////////
-  // Contour Xtru Definition 
+  // Contour shape Definition 
   ////////////////////////////
   const Int_t kcontourvertexnumber = 10;
   Double_t xcontourvertex[kcontourvertexnumber];
@@ -5281,17 +5012,112 @@ void AliITSv11GeometrySSD::SetLadderSupport(Int_t nedges){
                                        + fgkEndCapCoverPlateSmallHoleRadius;
   ycontourvertex[8] = ycontourvertex[7];
   ycontourvertex[9] = ycontourvertex[0];
-  TGeoXtru* contourshape = new TGeoXtru(2);
-  contourshape->DefinePolygon(kcontourvertexnumber,xcontourvertex,ycontourvertex);  
-  contourshape->DefineSection(0,-0.5*fgkEndCapCoverPlateThickness);
-  contourshape->DefineSection(1,+0.5*fgkEndCapCoverPlateThickness);
+
+  Double_t xboxin, dxboxin, yboxin, dyboxin;
+  Double_t xboxout, dxboxout, yboxout, dyboxout;
+  Double_t coordmin, coordmax;
+  coordmin = -fgkEndCapCoverPlateLength[0];
+  coordmax = fgkEndCapCoverPlateLength[1]-xcontourvertex[0];
+  xboxout = 0.5*(coordmin+coordmax);
+  dxboxout = 0.5*(coordmax-coordmin);
+  coordmin = -0.5*(fgkEndCapCoverPlateWidth[0]-fgkEndCapCoverPlateWidth[2]
+                                       - (kendcapcoverplatesmallholenumber[1]-1)
+                                       * fgkEndCapCoverPlateSmallHoleSeparation[2]);
+  coordmax = (kendcapcoverplatesmallholenumber[1]-1)
+                                       * fgkEndCapCoverPlateSmallHoleSeparation[2]-ycontourvertex[0];
+  yboxout = 0.5*(coordmin+coordmax);
+  dyboxout = 0.5*(coordmax-coordmin);
+  coordmin = -fgkEndCapCoverPlateSmallHoleRadius;
+  coordmax = fgkEndCapCoverPlateLength[1]+fgkEndCapCoverPlateSmallHoleRadius;
+  xboxin = 0.5*(coordmin+coordmax);
+  dxboxin = 0.5*(coordmax-coordmin);
+  coordmin = -fgkEndCapCoverPlateSmallHoleRadius;
+  coordmax = (kendcapcoverplatesmallholenumber[1]-1)
+                                       * fgkEndCapCoverPlateSmallHoleSeparation[2]
+                                       + fgkEndCapCoverPlateSmallHoleRadius;
+  yboxin = 0.5*(coordmin+coordmax);
+  dyboxin = 0.5*(coordmax-coordmin);
+  new TGeoBBox("EndCapCoverPlateContourBoxOut", dxboxout, dyboxout, 0.5*fgkEndCapCoverPlateThickness);
+  TGeoTranslation *trendCapCoverPlateContourboxout = new TGeoTranslation("SSD_trEndCapCoverPlateContourBoxOut",
+                                                         xboxout, yboxout, 0.);
+  trendCapCoverPlateContourboxout->RegisterYourself();
+  new TGeoBBox("EndCapCoverPlateContourBoxIn",  dxboxin, dyboxin, 0.5*fgkEndCapCoverPlateThickness+0.01);
+  TGeoTranslation *trendCapCoverPlateContourboxin = new TGeoTranslation("SSD_trEndCapCoverPlateContourBoxIn",
+                                                         xboxin, yboxin, 0.);
+  trendCapCoverPlateContourboxin->RegisterYourself();
+  TGeoCompositeShape *contourshape = new TGeoCompositeShape("contourShape", 
+        "EndCapCoverPlateContourBoxOut:SSD_trEndCapCoverPlateContourBoxOut-EndCapCoverPlateContourBoxIn:SSD_trEndCapCoverPlateContourBoxIn");
+
   TGeoVolume* contour = new TGeoVolume("EndCapCoverPlateContour",contourshape,
                                                                           fSSDAlCoolBlockMedium);
   contour->SetLineColor(6);
   /////////////////////////////
-  // Hole Contour Xtru Definition 
+  // Hole Contour Shape Definition 
   ////////////////////////////
-  const Int_t kholecontourvertexnumber = 10;
+  coordmin = xcontourvertex[0];
+  coordmax = coordmin+fgkEndCapCoverPlateLength[2];
+  xboxout = 0.5*(coordmin+coordmax);
+  dxboxout = 0.5*(coordmax-coordmin);
+  coordmin = ycontourvertex[1];
+  coordmax = ycontourvertex[1]+fgkEndCapCoverPlateWidth[2];
+  yboxout = 0.5*(coordmin+coordmax);
+  dyboxout = 0.5*(coordmax-coordmin);
+  coordmin = xcontourvertex[0]+ 0.5*(fgkEndCapCoverPlateLength[2]
+                                                  - 2.*fgkEndCapCoverPlateBigHoleRadius);
+  coordmax = coordmin + 2.*fgkEndCapCoverPlateBigHoleRadius;
+  xboxin = 0.5*(coordmin+coordmax);
+  dxboxin = 0.5*(coordmax-coordmin);
+  coordmin = ycontourvertex[1]+0.5*(fgkEndCapCoverPlateWidth[2]
+                                                  - 2.*fgkEndCapCoverPlateBigHoleRadius);;
+  coordmax = coordmin +2.*fgkEndCapCoverPlateBigHoleRadius;
+  yboxin = 0.5*(coordmin+coordmax);
+  dyboxin = 0.5*(coordmax-coordmin);
+  new TGeoBBox("EndCapCoverPlateContourBoxOut1", dxboxout, dyboxout, 0.5*fgkEndCapCoverPlateThickness);
+  TGeoTranslation *trendCapCoverPlateContourboxout1 = new TGeoTranslation("SSD_trEndCapCoverPlateContourBoxOut1",
+                                                         xboxout, yboxout, 0.);
+  trendCapCoverPlateContourboxout1->RegisterYourself();
+  new TGeoBBox("EndCapCoverPlateContourBoxIn1",  dxboxin, dyboxin, 0.5*fgkEndCapCoverPlateThickness+0.01);
+  TGeoTranslation *trendCapCoverPlateContourboxin1 = new TGeoTranslation("SSD_trEndCapCoverPlateContourBoxIn1",
+                                                         xboxin, yboxin, 0.);
+  trendCapCoverPlateContourboxin1->RegisterYourself();
+  TGeoCompositeShape *contourshape1 = new TGeoCompositeShape("contourShape1", 
+        "EndCapCoverPlateContourBoxOut1:SSD_trEndCapCoverPlateContourBoxOut1-EndCapCoverPlateContourBoxIn1:SSD_trEndCapCoverPlateContourBoxIn1");
+
+
+  coordmin = xcontourvertex[0]+fgkEndCapCoverPlateLength[5];
+  coordmax = coordmin+fgkEndCapCoverPlateLength[2];
+  xboxout = 0.5*(coordmin+coordmax);
+  dxboxout = 0.5*(coordmax-coordmin);
+  coordmin = ycontourvertex[0]-(fgkEndCapCoverPlateWidth[1]
+                                                  - fgkEndCapCoverPlateWidth[0]);
+  coordmax = ycontourvertex[0];
+  yboxout = 0.5*(coordmin+coordmax);
+  dyboxout = 0.5*(coordmax-coordmin);
+  coordmin = xcontourvertex[0]+fgkEndCapCoverPlateLength[5]+ 0.5*(fgkEndCapCoverPlateLength[2]
+                                                  - 2.*fgkEndCapCoverPlateBigHoleRadius);
+  coordmax = coordmin + 2.*fgkEndCapCoverPlateBigHoleRadius;
+  xboxin = 0.5*(coordmin+coordmax);
+  dxboxin = 0.5*(coordmax-coordmin);
+  coordmin = ycontourvertex[0]-(fgkEndCapCoverPlateWidth[1]
+                                                  - fgkEndCapCoverPlateWidth[0])+0.5*(fgkEndCapCoverPlateWidth[1]
+                                                  - fgkEndCapCoverPlateWidth[0]
+                                                  - 2.*fgkEndCapCoverPlateBigHoleRadius);
+  coordmax = coordmin+2.*fgkEndCapCoverPlateBigHoleRadius;
+  yboxin = 0.5*(coordmin+coordmax);
+  dyboxin = 0.5*(coordmax-coordmin);
+  new TGeoBBox("EndCapCoverPlateContourBoxOut2", dxboxout, dyboxout, 0.5*fgkEndCapCoverPlateThickness);
+  TGeoTranslation *trendCapCoverPlateContourboxout2 = new TGeoTranslation("SSD_trEndCapCoverPlateContourBoxOut2",
+                                                         xboxout, yboxout, 0.);
+  trendCapCoverPlateContourboxout2->RegisterYourself();
+  new TGeoBBox("EndCapCoverPlateContourBoxIn2",  dxboxin, dyboxin, 0.5*fgkEndCapCoverPlateThickness+0.01);
+  TGeoTranslation *trendCapCoverPlateContourboxin2 = new TGeoTranslation("SSD_trEndCapCoverPlateContourBoxIn2",
+                                                         xboxin, yboxin, 0.);
+  trendCapCoverPlateContourboxin2->RegisterYourself();
+  TGeoCompositeShape *contourshape2 = new TGeoCompositeShape("contourShape2", 
+        "EndCapCoverPlateContourBoxOut2:SSD_trEndCapCoverPlateContourBoxOut2-EndCapCoverPlateContourBoxIn2:SSD_trEndCapCoverPlateContourBoxIn2");
+  
+//  const Int_t kholecontourvertexnumber = 10;
+
   Double_t xholecontourvertex[2][kcontourvertexnumber];
   Double_t yholecontourvertex[2][kcontourvertexnumber];
   xholecontourvertex[0][0] = xcontourvertex[0];
@@ -5348,24 +5174,11 @@ void AliITSv11GeometrySSD::SetLadderSupport(Int_t nedges){
   yholecontourvertex[1][8] = yholecontourvertex[1][7];
   yholecontourvertex[1][9] = yholecontourvertex[1][0];
 
-  TGeoXtru* holecontourshape[2];
-  holecontourshape[0] = new TGeoXtru(2);
-  holecontourshape[0]->DefinePolygon(kholecontourvertexnumber,xholecontourvertex[0],
-                                                                 yholecontourvertex[0]);  
-  holecontourshape[0]->DefineSection(0,-0.5*fgkEndCapCoverPlateThickness);
-  holecontourshape[0]->DefineSection(1,+0.5*fgkEndCapCoverPlateThickness);
-
-  holecontourshape[1] = new TGeoXtru(2);
-  holecontourshape[1]->DefinePolygon(kholecontourvertexnumber,xholecontourvertex[1],
-                                                                 yholecontourvertex[1]);  
-  holecontourshape[1]->DefineSection(0,-0.5*fgkEndCapCoverPlateThickness);
-  holecontourshape[1]->DefineSection(1,+0.5*fgkEndCapCoverPlateThickness);
-
   TGeoVolume* holecontour[2];
-  holecontour[0] = new TGeoVolume("EndCapCoverPlateContour1",holecontourshape[0],
+  holecontour[0] = new TGeoVolume("EndCapCoverPlateContour1",contourshape1,
                                                                  fSSDAlCoolBlockMedium);
   holecontour[0]->SetLineColor(6);
-  holecontour[1] = new TGeoVolume("EndCapCoverPlateContour2",holecontourshape[1],
+  holecontour[1] = new TGeoVolume("EndCapCoverPlateContour2",contourshape2,
                                                                  fSSDAlCoolBlockMedium);
   holecontour[1]->SetLineColor(6);
   TGeoTranslation* holecontourtrans = new TGeoTranslation(fgkEndCapCoverPlateLength[3]
@@ -5471,14 +5284,14 @@ void AliITSv11GeometrySSD::SetLadderSupport(Int_t nedges){
   TGeoVolume* endcapcoolingtubetorus[5];
   TGeoTube* endcapcoolingtubeshape[4];
   TGeoVolume* endcapcoolingtube[4];
-  char endcapcoolingtubetorusname[30];
-  char endcapcoolingtubename[30];
+  char endcapcoolingtubetorusname[100];
+  char endcapcoolingtubename[100];
   TGeoTorus* endcapcoolingwatertubetorushape[5];
   TGeoVolume* endcapcoolingwatertubetorus[5];
   TGeoTube* endcapcoolingwatertubeshape[4];
   TGeoVolume* endcapcoolingwatertube[4];
-  char endcapcoolingwatertubetorusname[30];
-  char endcapcoolingwatertubename[30];
+  char endcapcoolingwatertubetorusname[100];
+  char endcapcoolingwatertubename[100];
   for(Int_t i=0; i<5; i++){
        sprintf(endcapcoolingtubetorusname,"EndCapCoolingTubeTorus%d",i+1);
        sprintf(endcapcoolingtubename,"EndCapCoolingTube%d",i+1);
@@ -5845,10 +5658,19 @@ void AliITSv11GeometrySSD::SetLadderSupport(Int_t nedges){
   yvertex[12] = yvertex[9]+2.*fgkEndCapSideCoverWidth[5]+fgkEndCapSideCoverLength[4]; 
   yvertex[13] = yvertex[12];
   yvertex[14] = yvertex[6];
-  TGeoXtru* endcapsidecovershape = new TGeoXtru(2);
-  endcapsidecovershape->DefinePolygon(kvertexnumber,xvertex,yvertex); 
-  endcapsidecovershape->DefineSection(0,-0.5*fgkEndCapSideCoverThickness);
-  endcapsidecovershape->DefineSection(1,0.5*fgkEndCapSideCoverThickness);
+  TGeoXtru* endcapsidecovershapeout = new TGeoXtru(2);
+  endcapsidecovershapeout->SetName("endcapsidecovershapeout");
+  endcapsidecovershapeout->DefinePolygon(7,xvertex,yvertex); 
+  endcapsidecovershapeout->DefineSection(0,-0.5*fgkEndCapSideCoverThickness);
+  endcapsidecovershapeout->DefineSection(1,0.5*fgkEndCapSideCoverThickness);
+  TGeoXtru* endcapsidecovershapein = new TGeoXtru(2);
+  endcapsidecovershapein->SetName("endcapsidecovershapein");
+  endcapsidecovershapein->DefinePolygon(6,&xvertex[8],&yvertex[8]); 
+  endcapsidecovershapein->DefineSection(0,-0.5*fgkEndCapSideCoverThickness-0.01);
+  endcapsidecovershapein->DefineSection(1,0.5*fgkEndCapSideCoverThickness+0.01);
+
+
+  TGeoCompositeShape* endcapsidecovershape = new TGeoCompositeShape("endcapsidecovershape", "endcapsidecovershapeout-endcapsidecovershapein");
   TGeoVolume* endcapsidecover = new TGeoVolume("EndCapSideCover",
                                                                endcapsidecovershape,fSSDCoolingTubePhynox);
   endcapsidecover->SetLineColor(fColorPhynox);
@@ -6653,7 +6475,7 @@ void AliITSv11GeometrySSD::SetLadderSupport(Int_t nedges){
   Double_t screwcoverplatesection[2] = {0.5*fgkEndCapCoverPlateThickness,
                                                                                fgkEndCapCoverPlateThickness
                                                                         +  fgkEndCapCoolingTubeRadiusMax};
-  TGeoXtru* screwcoverplateshape = GetScrewShape(screwcoverplateradius,
+  TGeoShape* screwcoverplateshape = GetScrewShape(screwcoverplateradius,
                                                                                                 screwcoverplatedgesnumber,
                                                                                                 screwcoverplatesection);
   TGeoVolume* screwcoverplate = new TGeoVolume("EndCapScrewCoverPlate",
@@ -6926,14 +6748,13 @@ void AliITSv11GeometrySSD::SetLadderSupport(Int_t nedges){
                                                                                                                        Double_t radiusmax, 
                                                                                                                        Double_t width, 
                                                                                                                        Int_t ncables,
-                                                                                                                       char* volname){
+                                                                                                                       const char* volname){
   /////////////////////////////////////////////////////////////
   // Generating EndCap High Voltage Tubes 
   /////////////////////////////////////////////////////////////
   Double_t effectiveinneradius = TMath::Sqrt(ncables)*radiusmin;
-  Double_t effectiveouteradius = TMath::Sqrt(TMath::Power(effectiveinneradius,2.)
-                                                          +             TMath::Power(radiusmax,2.)
-                               -             TMath::Power(radiusmin,2.));
+  Double_t effectiveouteradius = TMath::Sqrt(effectiveinneradius*effectiveinneradius+(radiusmax-radiusmin)*(radiusmax-radiusmin));
+
   TGeoTube* effectiveinnertubeshape = new TGeoTube(0.,effectiveinneradius,0.5*width);
   TGeoTube* effectiveoutertubeshape = new TGeoTube(effectiveinneradius,
                                                                                                   effectiveouteradius,0.5*width);
@@ -6989,7 +6810,7 @@ void AliITSv11GeometrySSD::SetLadderSupport(Int_t nedges){
   ////////////////////////////////////
   TGeoXtru* upendcapsupportshape[klayernumber];
   TGeoVolume* upendcapsupport[klayernumber]; 
-  char upendcapsupportname[30]; 
+  char upendcapsupportname[100]; 
   for(Int_t i=0; i<klayernumber; i++){
    upendcapsupportshape[i] = new TGeoXtru(2);
    sprintf(upendcapsupportname,"UpEndCapSupportPieceLayer%i",i+5);
@@ -7026,7 +6847,7 @@ void AliITSv11GeometrySSD::SetLadderSupport(Int_t nedges){
   ////////////////////////////////////  
   TGeoXtru* downendcapsupportshape[klayernumber];
   TGeoVolume* downendcapsupport[klayernumber]; 
-  char downendcapsupportname[30]; 
+  char downendcapsupportname[100]; 
   for(Int_t i=0; i<klayernumber; i++){
        downendcapsupportshape[i] = new TGeoXtru(2);
     sprintf(downendcapsupportname,"DownEndCapSupportPieceLayer%i",i+5);
@@ -7053,7 +6874,7 @@ void AliITSv11GeometrySSD::SetLadderSupport(Int_t nedges){
   TGeoPgon* endcapsupportmothershape[klayernumber];
   TGeoVolume** endcapsupportmother;
   endcapsupportmother = new TGeoVolume*[klayernumber];
-  char endcapsupportmothername[30];
+  char endcapsupportmothername[100];
   for(Int_t i=0; i<klayernumber; i++){
        endcapsupportmothershape[i] = new TGeoPgon(0.0,360.0,kssdlayladdernumber[i],2);
     sprintf(endcapsupportmothername,"EndCapSupportMotherLayer%i",i+5);
@@ -7105,7 +6926,7 @@ void AliITSv11GeometrySSD::SetLadderSupport(Int_t nedges){
   // Setting TGeoPgon Volume for Mother Container
   ///////////////////////////////////////////////
   TGeoPgon* endcapsupportsystemshape[klayernumber];
-  char endcapsupportsystemothername[30];
+  char endcapsupportsystemothername[100];
   for(Int_t i=0; i<klayernumber; i++){
        endcapsupportsystemshape[i] = new TGeoPgon(0.0,360.0,kssdlayladdernumber[i],2);
     sprintf(endcapsupportsystemothername,"EndCapSupportSystemLayer%i",i+5);
@@ -7177,7 +6998,7 @@ void AliITSv11GeometrySSD::SetLadderSupport(Int_t nedges){
        for(Int_t j=0; j<kssdlayladdernumber[i]+2; j++){
                delete endcapassemblyrot[i][j];
        }
-       delete endcapassemblyrot[i];
+       delete [] endcapassemblyrot[i];
        delete endcapassemblymatrix[i][0];
        delete endcapassemblymatrix[i][1];
   }
@@ -7188,7 +7009,7 @@ void AliITSv11GeometrySSD::SetLadderSupport(Int_t nedges){
   // Setting End Cap Support + End Cap Assembly of Layer 5. 
   /////////////////////////////////////////////////////////////
   if (! moth) {
-    printf("Error::AliITSv11GeometrySSD: Can't insert end cap support of layer5, mother is null!\n");
+    AliError("Can't insert end cap support of layer5, mother is null!\n");
     return;
   };
   if(!fgkEndCapSupportSystem) SetEndCapSupportAssembly();
@@ -7219,7 +7040,7 @@ void AliITSv11GeometrySSD::SetLadderSupport(Int_t nedges){
   // Setting End Cap Support + End Cap Assembly of Layer 6. 
   /////////////////////////////////////////////////////////////
   if (! moth) {
-    printf("Error::AliITSv11GeometrySSD: Can't insert end cap support of layer6, mother is null!\n");
+    AliError("Can't insert end cap support of layer6, mother is null!\n");
     return;
   };
   if(!fgkEndCapSupportSystem) SetEndCapSupportAssembly();
@@ -7250,7 +7071,7 @@ void AliITSv11GeometrySSD::SetLadderSupport(Int_t nedges){
   // Setting Ladder Support of Layer 5. 
   /////////////////////////////////////////////////////////////
   if (! moth) {
-    printf("Error::AliITSv11GeometrySSD: Can't insert ladder lupport of layer5, mother is null!\n");
+    AliError("Can't insert ladder lupport of layer5, mother is null!\n");
     return;
   };
   if(!fLay5LadderSupportRing) SetLadderSupport(100);
@@ -7268,7 +7089,7 @@ void AliITSv11GeometrySSD::SetLadderSupport(Int_t nedges){
   // Setting Ladder Support of Layer 6. 
   /////////////////////////////////////////////////////////////
   if (! moth) {
-    printf("Error::AliITSv11GeometrySSD: Can't insert ladder lupport of layer6, mother is null!\n");
+    AliError("Can't insert ladder lupport of layer6, mother is null!\n");
     return;
   };
   if(!fLay6LadderSupportRing) SetLadderSupport(100);
@@ -7286,7 +7107,7 @@ void AliITSv11GeometrySSD::SetLadderSupport(Int_t nedges){
   // Setting Ladder Support of Layer 6. 
   /////////////////////////////////////////////////////////////
   if (! moth) {
-    printf("Error::AliITSv11GeometrySSD: Can't insert SSD Cone, mother is null!\n");
+    AliError("Can't insert SSD Cone, mother is null!\n");
     return;
   };
   if(!fSSDCone) SetSSDCone();
@@ -7588,7 +7409,7 @@ void AliITSv11GeometrySSD::SetLadderSupport(Int_t nedges){
   // Setting SSD Cables
   /////////////////////////////////////////////////////////////
   if (! moth) {
-    printf("Error::AliITSv11GeometrySSD: Can't insert SSD Cables, mother is null!\n");
+    AliError("Can't insert SSD Cables, mother is null!\n");
     return;
   };
   TGeoVolume* ssdcables = SetSSDCables();
@@ -7916,14 +7737,14 @@ void AliITSv11GeometrySSD::SetLadderSupport(Int_t nedges){
   Double_t ssdcablepatchpanel3BB26radiusmin[2];
   Double_t ssdcablepatchpanel3BB26radiusmax[2];
   Double_t ssdcablepatchpanel3RB26zsection[2];
-  ssdcablepatchpanel3BB26radiusmin[0] = ssdcableslay5pconrmin[3]-0.5*fgkSSDPatchPanelHeigth+2.8;
+  ssdcablepatchpanel3BB26radiusmin[0] = ssdcableslay5pconrmin[3]-0.5*fgkSSDPatchPanelHeight+2.8;
   ssdcablepatchpanel3BB26radiusmax[0] = ssdcablepatchpanel3BB26radiusmin[0]
                                                                          + fgkSSDCablesLay5RightSideHeight
-                                                                         + fgkSSDCablesLay6RightSideHeight+0.5*fgkSSDPatchPanelHeigth;
+                                                                         + fgkSSDCablesLay6RightSideHeight+0.5*fgkSSDPatchPanelHeight;
   ssdcablepatchpanel3BB26radiusmin[1] = fgkSSDPatchPanel2RB26Radius;
   ssdcablepatchpanel3BB26radiusmax[1] = ssdcablepatchpanel3BB26radiusmin[1]
                                                                          + 0.*fgkSSDCablesLay5RightSideHeight
-                                                                         + 0.*fgkSSDCablesLay6RightSideHeight+0.5*fgkSSDPatchPanelHeigth;
+                                                                         + 0.*fgkSSDCablesLay6RightSideHeight+0.5*fgkSSDPatchPanelHeight;
   ssdcablepatchpanel3RB26zsection[0] = 0.5*fgkSSDCentralSupportLength
                                                                                 + fgkSSDCentralAL3SupportLength
                                                                                 + fgkSSDPConeZLength[0];
@@ -7940,10 +7761,10 @@ void AliITSv11GeometrySSD::SetLadderSupport(Int_t nedges){
   for(Int_t i=0; i<4; i++) ssdcablepatchpanel3B26rot[i] = new TGeoRotation();
   ssdcablepatchpanel3B26rot[0]->SetAngles(0.0,0.0,0.0);
   ssdcablepatchpanel3B26rot[1]->SetAngles(fgkSSDCablesPatchPanel2RB26Angle[0]
-                                                                 +                       fgkSSDCablesPatchPanel2RB26Angle[1],0.0,0.0);
+                                                                 +                       fgkSSDCablesPatchPanel2RB26Angle[1]+6.0,0.0,0.0);
   ssdcablepatchpanel3B26rot[2]->SetAngles(180.0,0.0,0.0);
   ssdcablepatchpanel3B26rot[3]->SetAngles(180.0+fgkSSDCablesPatchPanel2RB26Angle[0]
-                                                                 +                       fgkSSDCablesPatchPanel2RB26Angle[1],0.0,0.0);
+                                                                 +                       fgkSSDCablesPatchPanel2RB26Angle[1]+6.0,0.0,0.0);
   for(Int_t i=0; i<4; i++) ssdcablesmother->AddNode(ssdcablepatchpanel3RB26pcon,i+1,ssdcablepatchpanel3B26rot[i]);
   ////////////////////////////////////
   //cablescapacity[10] = 4.*ssdcablepatchpanel3RB26pconshape->Capacity();
@@ -7957,10 +7778,10 @@ void AliITSv11GeometrySSD::SetLadderSupport(Int_t nedges){
                                                                          + fgkSSDCentralAL3SupportLength
                                                                          + (4.0/5.0)*fgkSSDPConeZLength[0];
   ssdcableitsring3BB26pconzsection[1] = ssdcablepatchpanel3RB26zsection[0];
-  ssdcableitsring3BB26pconrmin[0] = fgkSSDPConeUpRadius-0.5*fgkSSDPatchPanelHeigth;
+  ssdcableitsring3BB26pconrmin[0] = fgkSSDPConeUpRadius-0.5*fgkSSDPatchPanelHeight;
   ssdcableitsring3BB26pconrmax[0] = ssdcableitsring3BB26pconrmin[0]
                                                                  + fgkSSDCablesLay5RightSideHeight
-                                                                 + fgkSSDCablesLay6RightSideHeight+0.5*fgkSSDPatchPanelHeigth;
+                                                                 + fgkSSDCablesLay6RightSideHeight+0.5*fgkSSDPatchPanelHeight;
   ssdcableitsring3BB26pconrmin[1] = ssdcablepatchpanel3BB26radiusmin[0];
   ssdcableitsring3BB26pconrmax[1] = ssdcablepatchpanel3BB26radiusmax[0];
   TGeoPcon* ssdcableitsring3BB26pconshape[4];
@@ -8014,7 +7835,7 @@ void AliITSv11GeometrySSD::SetLadderSupport(Int_t nedges){
   ssdcablepatchpanel3BB24radiusmax[1] = ssdcablepatchpanel3BB24radiusmin[1]
                                                                          + 0.*fgkSSDCablesLay5RightSideHeight
                                                                          + 0.*fgkSSDCablesLay6RightSideHeight
-                                                                         + 0.5*fgkSSDPatchPanelHeigth;
+                                                                         + 0.5*fgkSSDPatchPanelHeight;
   ssdcablepatchpanel3RB24zsection[0] = -0.5*fgkSSDCentralSupportLength
                                                                         -  fgkSSDCentralAL3SupportLength
                                                                         -  fgkSSDPConeZLength[0];
@@ -8030,10 +7851,10 @@ void AliITSv11GeometrySSD::SetLadderSupport(Int_t nedges){
   ssdcablepatchpanel3RB24pcon->SetLineColor(9);
   TGeoRotation* ssdcablepatchpanel3B24rot[3];
   for(Int_t i=0; i<4; i++) ssdcablepatchpanel3B24rot[i] = new TGeoRotation();
-  ssdcablepatchpanel3B24rot[0]->SetAngles(0.0,0.0,0.0);
+  ssdcablepatchpanel3B24rot[0]->SetAngles(-6.0,0.0,0.0);
   ssdcablepatchpanel3B24rot[1]->SetAngles(fgkSSDCablesPatchPanel2RB24Angle[0]
                                                                  +                       fgkSSDCablesPatchPanel2RB24Angle[1],0.0,0.0);
-  ssdcablepatchpanel3B24rot[2]->SetAngles(180.0,0.0,0.0);
+  ssdcablepatchpanel3B24rot[2]->SetAngles(174.0,0.0,0.0);
   ssdcablepatchpanel3B24rot[3]->SetAngles(180.0+fgkSSDCablesPatchPanel2RB24Angle[0]
                                                                  +                       fgkSSDCablesPatchPanel2RB24Angle[1],0.0,0.0);
   for(Int_t i=0; i<4; i++) ssdcablesmother->AddNode(ssdcablepatchpanel3RB24pcon,i+1,ssdcablepatchpanel3B24rot[i]);
@@ -8047,10 +7868,10 @@ void AliITSv11GeometrySSD::SetLadderSupport(Int_t nedges){
   Double_t ssdcableitsring3BB24pconrmax[2];
   ssdcableitsring3BB24pconzsection[0] = -ssdcableitsring3BB26pconzsection[0];
   ssdcableitsring3BB24pconzsection[1] = ssdcablepatchpanel3RB24zsection[0];
-  ssdcableitsring3BB24pconrmin[0] = fgkSSDPConeUpRadius-0.5*fgkSSDPatchPanelHeigth;
+  ssdcableitsring3BB24pconrmin[0] = fgkSSDPConeUpRadius-0.5*fgkSSDPatchPanelHeight;
   ssdcableitsring3BB24pconrmax[0] = ssdcableitsring3BB24pconrmin[0]
                                                                  + fgkSSDCablesLay5RightSideHeight
-                                                                 + fgkSSDCablesLay6RightSideHeight+0.5*fgkSSDPatchPanelHeigth;
+                                                                 + fgkSSDCablesLay6RightSideHeight+0.5*fgkSSDPatchPanelHeight;
   ssdcableitsring3BB24pconrmin[1] = ssdcablepatchpanel3BB24radiusmin[0];
   ssdcableitsring3BB24pconrmax[1] = ssdcablepatchpanel3BB24radiusmax[0];
   TGeoPcon* ssdcableitsring3BB24pconshape[4];
@@ -8140,36 +7961,47 @@ void AliITSv11GeometrySSD::SetLadderSupport(Int_t nedges){
  }
  ////////////////////////////////////////////////////////////////////////////////
 TGeoArb8* AliITSv11GeometrySSD::GetArbShape(TVector3* vertexpos[], Double_t* width, 
-                                                                       Double_t height, char* shapename, Int_t isign) const{
+                                            Double_t height, const char* shapename, Int_t isign) const{
   /////////////////////////////////////////////////////////////
   // Method generating an Arb shape 
   /////////////////////////////////////////////////////////////
   const Int_t kvertexnumber = 8;
   const Int_t ktransvectnumber = 2;
-  TVector3* vertex[kvertexnumber];
-  TVector3* transvector[2];
-  for(Int_t i=0; i<ktransvectnumber; i++) transvector[i] = new TVector3(0.,width[i]);
+  TVector3 vertex[kvertexnumber];
+  TVector3 transvector[2];
+  for(Int_t i=0; i<ktransvectnumber; i++) transvector[i].SetY(width[i]);
   /////////////////////////////////////////////////////////////
   //Setting the vertices for TGeoArb8
   /////////////////////////////////////////////////////////////
-  vertex[0] = new TVector3(*vertexpos[0]);
-  vertex[1] = new TVector3(*vertexpos[1]);
-  vertex[2] = new TVector3(*vertex[1]+isign*(*transvector[0]));
-  vertex[3] = new TVector3(*vertex[0]+isign*(*transvector[0]));
-  vertex[4] = new TVector3(*vertexpos[2]);
-  vertex[5] = new TVector3(*vertexpos[3]);
-  vertex[6] = new TVector3(*vertex[5]+isign*(*transvector[1]));
-  vertex[7] = new TVector3(*vertex[4]+isign*(*transvector[1]));
+  vertex[0] = *vertexpos[0];
+  vertex[1] = *vertexpos[1];
+  vertex[2] = vertex[1]; 
+  vertex[3] = vertex[0]; 
+  vertex[4] = *vertexpos[2];
+  vertex[5] = *vertexpos[3];
+  vertex[6] = vertex[5];
+  vertex[7] = vertex[4];
+
+  // NB: order of points is clockwise
+  if (isign < 0) {
+    vertex[2] -= transvector[0];
+    vertex[3] -= transvector[0];
+    vertex[6] -= transvector[1];
+    vertex[7] -= transvector[1];
+  }
+  else {
+    vertex[0] += transvector[0];
+    vertex[1] += transvector[0];
+    vertex[4] += transvector[1];
+    vertex[5] += transvector[1];
+  }
+
   /////////////////////////////////////////////////////////////
   TGeoArb8* arbshape = new TGeoArb8(shapename,0.5*height);
-  for(Int_t i = 0; i<kvertexnumber;i++) 
-                                                       arbshape->SetVertex(i,vertex[i]->X(),vertex[i]->Y());
-  /////////////////////////////////////////////////////////////
-  // Deallocating memory
-  /////////////////////////////////////////////////////////////
-  for(Int_t i=0; i< kvertexnumber; i++) delete vertex[i];  
-  for(Int_t i=0; i< ktransvectnumber; i++) delete transvector[i];  
-  /////////////////////////////////////////////////////////////
+  for(Int_t i = 0; i<kvertexnumber;i++) {
+    arbshape->SetVertex(i,vertex[i].X(),vertex[i].Y());
+  }
+
   return arbshape;
 } 
 ///////////////////////////////////////////////////////////////////////////////
@@ -8222,7 +8054,7 @@ TGeoXtru* AliITSv11GeometrySSD::GetArcShape(Double_t phi, Double_t rmin,
        return arcshape;
 }
 ////////////////////////////////////////////////////////////////////////////////
-TGeoXtru* AliITSv11GeometrySSD::GetScrewShape(Double_t* radius,Int_t* edgesnumber,Double_t* section) const {
+TGeoShape* AliITSv11GeometrySSD::GetScrewShape(Double_t* radius,Int_t* edgesnumber,Double_t* section) const {
   ///////////////////////////////////////////////////////////////////////
   // Method Generating the Screw Shape  
   // radius[0]: outer radius
@@ -8236,52 +8068,59 @@ TGeoXtru* AliITSv11GeometrySSD::GetScrewShape(Double_t* radius,Int_t* edgesnumbe
   Double_t inradius = radius[1];
   Int_t outvertexnumber = edgesnumber[0];
   Int_t invertexnumber = edgesnumber[1];
-  Double_t* xscrewvertex = new Double_t[outvertexnumber+invertexnumber+2];
-  Double_t* yscrewvertex = new Double_t[outvertexnumber+invertexnumber+2];
-  for(Int_t i=0; i<outvertexnumber+1; i++){
+  Double_t* xscrewvertex = new Double_t[outvertexnumber+invertexnumber];
+  Double_t* yscrewvertex = new Double_t[outvertexnumber+invertexnumber];
+  for(Int_t i=0; i<outvertexnumber; i++){
        xscrewvertex[i] = outradius*CosD(90.+i*360./outvertexnumber);
        yscrewvertex[i] = outradius*SinD(90.+i*360./outvertexnumber);
   }
-  for(Int_t i=0; i<invertexnumber+1; i++){
-       xscrewvertex[outvertexnumber+i+1] = inradius*CosD(90.-i*360./invertexnumber);
-       yscrewvertex[outvertexnumber+i+1] = inradius*SinD(90.-i*360./invertexnumber);
+  for(Int_t i=0; i<invertexnumber; i++){
+       xscrewvertex[outvertexnumber+i] = inradius*CosD(90.+i*360./invertexnumber);
+       yscrewvertex[outvertexnumber+i] = inradius*SinD(90.+i*360./invertexnumber);
   }
-  TGeoXtru* screwshape = new TGeoXtru(2);
-  screwshape->DefinePolygon(outvertexnumber+invertexnumber+2,xscrewvertex,yscrewvertex);
-  screwshape->DefineSection(0,section[0]);
-  screwshape->DefineSection(1,section[1]);
+  TGeoXtru* screwshapeout = new TGeoXtru(2);
+  screwshapeout->DefinePolygon(outvertexnumber,xscrewvertex,yscrewvertex);
+  screwshapeout->DefineSection(0,section[0]);
+  screwshapeout->DefineSection(1,section[1]);
+  TGeoXtru* screwshapein = new TGeoXtru(2);
+  screwshapein->DefinePolygon(invertexnumber,&xscrewvertex[outvertexnumber],&yscrewvertex[outvertexnumber]);
+  screwshapein->DefineSection(0,section[0]-0.01); // make inner part bigger in Z
+  screwshapein->DefineSection(1,section[1]+0.01); // safer when we subtract it
+  TGeoSubtraction *snode = new TGeoSubtraction(screwshapeout, screwshapein);
+  TGeoCompositeShape *screwshape = new TGeoCompositeShape("", snode);
+  
   delete [] xscrewvertex;
   delete [] yscrewvertex;
   return screwshape;
 }
 ////////////////////////////////////////////////////////////////////////////////
-TGeoXtru* AliITSv11GeometrySSD::GetHoleShape(Double_t radius, Int_t nedges, Double_t *section) const {
+TGeoShape* AliITSv11GeometrySSD::GetHoleShape(Double_t radius, Int_t nedges, Double_t *section) const {
   ///////////////////////////////////////////////////////////////////////
   // Method Generating the Hole Shape  
   // radius of the Hole
   // nedges: number of edges to approximate the circle
   ///////////////////////////////////////////////////////////////////////
-  Int_t vertexnumber = nedges+6;
-  Double_t* xholevertex = new Double_t[vertexnumber];
-  Double_t* yholevertex = new Double_t[vertexnumber];
-  xholevertex[0] = radius;
-  xholevertex[1] = xholevertex[0];
-  xholevertex[2] = -xholevertex[1];
-  xholevertex[3] = xholevertex[2];
-  xholevertex[4] = xholevertex[0];
-  yholevertex[0] = 0.;
-  yholevertex[1] = -radius;
-  yholevertex[2] = yholevertex[1];
-  yholevertex[3] = -yholevertex[1];
-  yholevertex[4] = yholevertex[3];
-  for(Int_t i=0; i<nedges+1; i++){
-       xholevertex[i+5] = radius*CosD(i*360./nedges);
-       yholevertex[i+5] = radius*SinD(i*360./nedges);
+  Double_t* xholevertex = new Double_t[nedges];
+  Double_t* yholevertex = new Double_t[nedges];
+  Double_t z  = 0.5*(section[0]+section[1]);
+  Double_t dz = 0.5*(section[1]-section[0]);
+  TGeoTranslation *tr = 0;
+  if (TMath::Abs(z) > TGeoShape::Tolerance()) {
+     tr = new TGeoTranslation(0.,0.,z);
+     tr->RegisterYourself();
+  }   
+  TGeoBBox *box = new TGeoBBox("",radius,radius,dz);
+  for(Int_t i=0; i<nedges; i++){
+       xholevertex[i] = radius*CosD(i*360./nedges);
+       yholevertex[i] = radius*SinD(i*360./nedges);
   }
-  TGeoXtru* holeshape = new TGeoXtru(2);
-  holeshape->DefinePolygon(vertexnumber,xholevertex,yholevertex);
-  holeshape->DefineSection(0,section[0]);
-  holeshape->DefineSection(1,section[1]);
+  TGeoXtru* holeshapeout = new TGeoXtru(2);
+  holeshapeout->DefinePolygon(nedges,xholevertex,yholevertex);
+  holeshapeout->DefineSection(0,section[0]-0.01); // make subtracted part larger in Z
+  holeshapeout->DefineSection(1,section[1]+0.01);
+  TGeoSubtraction *snode = new TGeoSubtraction(box,holeshapeout,tr);
+  TGeoCompositeShape *holeshape = new TGeoCompositeShape("", snode);
+  
   delete [] xholevertex;
   delete [] yholevertex;
   return holeshape;
@@ -8323,11 +8162,11 @@ TGeoMedium* AliITSv11GeometrySSD::GetMedium(const char* mediumName) {
   /////////////////////////////////////////////////////////////
   // Method returning the Medium type 
   /////////////////////////////////////////////////////////////
-  char ch[30];
+  char ch[100];
   sprintf(ch, "ITS_%s",mediumName);
   TGeoMedium* medium =  gGeoManager->GetMedium(ch);
   if (! medium)
-    printf("Error(AliITSv11GeometrySSD)::medium %s not found !\n", mediumName);
+    AliError(Form("medium %s not found !\n", mediumName));
   return medium;
 }
 ////////////////////////////////////////////////////////////////////////////////
@@ -8401,4 +8240,3 @@ void AliITSv11GeometrySSD::CreateMaterials(){
   fCreateMaterials = kTRUE;
 }
 /////////////////////////////////////////////////////////////////////
-