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index 53043e867177b38b1173b5c3d2badac202218de5..85129e086bd0a8d21abf11dc587bf6931a531745 100644 (file)
 
 /*
 $Log$
+Revision 1.31  2001/02/13 16:53:35  nilsen
+Fixed a but when trying to use GEANT4. Needed to replace
+if(!((TGeant3*)gMC)) with if(!(dynamic_casst<TGeant3*>(gMC)))
+because just casting gMC to be TGeant3* even when it realy is a TGeant3 pointer
+did not result in a zero value. For AliITSv5asymm and AliITSv5symm, needed
+to fix a bug in the initilizers and a bug in BuildGeometry. This is now done
+in the same way as in AliITSv5.cxx.
+
+Revision 1.30  2001/02/09 20:06:26  nilsen
+Fixed bug in distructor. Can't distroy fixxed length arrays. Thanks Peter.
+
+Revision 1.29  2001/02/09 00:05:31  nilsen
+Added fMajor/MinorVersion variables and made other changes to better make
+use of the new code changes in AliITSgeom related classes.
+
+Revision 1.28  2001/02/02 23:57:28  nilsen
+Added include file that are no londer included in AliITSgeom.h
+
+Revision 1.27  2001/01/30 09:23:13  hristov
+Streamers removed (R.Brun)
+
+Revision 1.26  2000/11/30 11:13:11  barbera
+ Added changes suggested by Federico Carminati on nov, 30, 2000
+
+Revision 1.25  2000/10/05 20:50:00  nilsen
+Now using root generated streamers.
+
+Revision 1.14.4.12  2000/10/02 16:04:03  barbera
+Forward declarations added
+
+Revision 1.22  2000/07/10 16:07:19  fca
+Release version of ITS code
+
+Revision 1.14.4.4  2000/05/19 10:10:21  nilsen
+fix for bug with HP and Sun unix + fix for event display in ITS-working branch
+
+Revision 1.14.4.3  2000/03/04 23:46:38  nilsen
+Fixed up the comments/documentation.
+
+Revision 1.14.4.2  2000/03/02 21:53:02  nilsen
+To make it compatable with the changes in AliRun/AliModule.
+
+Revision 1.14.4.1  2000/01/12 19:03:33  nilsen
+This is the version of the files after the merging done in December 1999.
+See the ReadMe110100.txt file for details
+
 Revision 1.14  1999/10/22 08:16:49  fca
 Correct destructors, thanks to I.Hrivnacova
 
@@ -30,91 +76,333 @@ Introduction of the Copyright and cvs Log
 */
 
 ///////////////////////////////////////////////////////////////////////////////
-//                                                                           //
-//  Inner Traking System version 5                                           //
-//  This class contains the base procedures for the Inner Tracking System    //
-//                                                                           //
+//
+//  Inner Traking System version 5
+//  This class contains the base procedures for the Inner Tracking System
+//
 // Authors: R. Barbera, B. S. Nilsen.
 // version 5.
 // Created September 17 1999.
-//                                                                           //
+//
 ///////////////////////////////////////////////////////////////////////////////
-
+#include <iostream.h>
+#include <iomanip.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <TMath.h>
+#include <TGeometry.h>
+#include <TNode.h>
+#include <TTUBE.h>
+#include <TFile.h>    // only required for Tracking function?
+#include <TCanvas.h>
+#include <TObjArray.h>
+#include <TLorentzVector.h>
+#include <TObjString.h>
+#include <TClonesArray.h>
+#include <TBRIK.h>
+#include <TSystem.h>
 
+#include "AliMC.h"
 #include "AliRun.h"
-#include "TSystem.h"
+#include "../TGeant3/TGeant3.h"
 #include "AliITShit.h"
+#include "AliITSGeant3Geometry.h"
 #include "AliITS.h"
 #include "AliITSv5.h"
 #include "AliITSgeom.h"
+#include "AliITSgeomSPD.h"
+#include "AliITSgeomSDD.h"
+#include "AliITSgeomSSD.h"
 
 ClassImp(AliITSv5)
  
 //_____________________________________________________________________________
 AliITSv5::AliITSv5() {
-    //
-    // Standard constructor for the ITS
-    //
-    fId5N = 6;
-    fId5Name = new char*[fId5N];
-    fId5Name[0] = "ITS1";
-    fId5Name[1] = "ITS2";
-    fId5Name[2] = "ITS3";
-    fId5Name[3] = "ITS4";
-    fId5Name[4] = "ITS5";
-    fId5Name[5] = "ITS6";
-}
-//_____________________________________________________________________________
-AliITSv5::~AliITSv5() {
-    //
-    // Standard destructor for the ITS
-    //
-  delete [] fId5Name;
+////////////////////////////////////////////////////////////////////////
+//    Standard default constructor for the ITS version 5.
+////////////////////////////////////////////////////////////////////////
+    Int_t i;
+
+    fIdN    = 0;
+    fIdName = 0;
+    fIdSens = 0;
+    fEuclidOut    = kFALSE; // Don't write Euclide file
+    fGeomDetOut   = kFALSE; // Don't write .det file
+    fGeomDetIn    = kFALSE; // Don't Read .det file
+    fGeomOldDetIn = kFALSE; // Don't Read old formatted .det file
+    fMajorVersion = IsVersion();
+    fMinorVersion = 1;
+    for(i=0;i<60;i++) fRead[i] = '\0';
+    for(i=0;i<60;i++) fWrite[i] = '\0';
+    for(i=0;i<60;i++) fEuclidGeomDet[i] = '\0';
 }
 //_____________________________________________________________________________
 AliITSv5::AliITSv5(const char *name, const char *title) : AliITS(name, title){
-    //
-    // Standard constructor for the ITS
-    //
-    fId5N = 6;
-    fId5Name = new char*[fId5N];
-    fId5Name[0] = "ITS1";
-    fId5Name[1] = "ITS2";
-    fId5Name[2] = "ITS3";
-    fId5Name[3] = "ITS4";
-    fId5Name[4] = "ITS5";
-    fId5Name[5] = "ITS6";
+////////////////////////////////////////////////////////////////////////
+//    Standard constructor for the ITS version 5.
+////////////////////////////////////////////////////////////////////////
+    Int_t i;
+
+    fIdN    = 6;
+    fIdName    = new TString[fIdN];
+    fIdName[0] = "ITS1";
+    fIdName[1] = "ITS2";
+    fIdName[2] = "ITS3";
+    fIdName[3] = "ITS4";
+    fIdName[4] = "ITS5";
+    fIdName[5] = "ITS6";
+    fIdSens    = new Int_t[fIdN];
+    for (i=0;i<fIdN;i++) fIdSens[i] = 0;
+    fEuclidOut    = kFALSE; // Don't write Euclide file
+    fGeomDetOut   = kFALSE; // Don't write .det file
+    fGeomDetIn    = kFALSE; // Don't Read .det file
+    fGeomOldDetIn = kFALSE; // Don't Read old formatted .det file
+    fMajorVersion = IsVersion();
+    fMinorVersion = 1;
+    for(i=0;i<60;i++) fRead[i] = '\0';
+    for(i=0;i<60;i++) fWrite[i] = '\0';
 
     fEuclidMaterial = "$ALICE_ROOT/Euclid/ITSgeometry_5.tme";
     fEuclidGeometry = "$ALICE_ROOT/Euclid/ITSgeometry_5.euc";
+    strncpy(fEuclidGeomDet,"$ALICE_ROOT/ITS/ITSgeometry_v5.det",60);
+    strncpy(fRead,fEuclidGeomDet,60);
+    strncpy(fWrite,fEuclidGeomDet,60);
 }
+//____________________________________________________________________________
+AliITSv5::AliITSv5(const AliITSv5 &source){
+////////////////////////////////////////////////////////////////////////
+//     Copy Constructor for ITS version 5.
+////////////////////////////////////////////////////////////////////////
+    if(&source == this) return;
+    Warning("Copy Constructor","Not allowed to copy AliITSv5");
+    return;
+}
+//_____________________________________________________________________________
+AliITSv5& AliITSv5::operator=(const AliITSv5 &source){
+////////////////////////////////////////////////////////////////////////
+//    Assignment operator for the ITS version 5.
+////////////////////////////////////////////////////////////////////////
 
+    if(&source == this) return *this;
+    Warning("= operator","Not allowed to copy AliITSv5");
+    return *this;
+
+}
 //_____________________________________________________________________________
-void AliITSv5::CreateMaterials(){
+AliITSv5::~AliITSv5() {
+////////////////////////////////////////////////////////////////////////
+//    Standard destructor for the ITS version 5.
+////////////////////////////////////////////////////////////////////////
+}
+//______________________________________________________________________
+void AliITSv5::BuildGeometry(){
+////////////////////////////////////////////////////////////////////////
+//    Geometry builder for the ITS version 5.
+////////////////////////////////////////////////////////////////////////
   //
-  // Read materials for the ITS
+  // Build ITS TNODE geometry for event display using detailed geometry.
+  // This function builds a simple ITS geometry used by the ROOT macro
+  // ITSdisplay.C.
+
+  TNode *top;
+  TNode *nd;
+  //const int kColorITSSPD=kRed;
+  //const int kColorITSSDD=kGreen;
+  const int kColorITSSSD=kBlue;
   //
+  AliITSgeom  *gm = this->GetITSgeom();
+  if(gm==0) return;
+  top=gAlice->GetGeometry()->GetNode("alice");
+
+  Int_t       lay,lad,det,i;
+  Text_t      name[10];
+  Float_t     xg[3];
+  Float_t     rt[9];
+  Double_t    rtd[9];
+  TBRIK       *box;
+  TRotMatrix  *rm;
+  //TCanvas     *c1 = new TCanvas("c1","ITS");
+
+  for(lay=1;lay<=2;lay++)
+   for(lad=1;lad<=gm->GetNladders(lay);lad++)
+    for(det=1;det<=gm->GetNdetectors(lay);det++){
+          try {
+              box  = new TBRIK ("ActiveSPD","Active volume of SPD","SPD SI DET",
+                                   0.64,0.0075,4.19); 
+          } catch (...) {
+             cout << "EXCEPTION in box = new TBRIK" << endl;
+             return;
+         }
+          gm->GetTrans(lay,lad,det,xg[0],xg[1],xg[2]);
+          gm->GetRotMatrix(lay,lad,det,rt);
+          //sprintf(name,"ROT%1.1d2.2d2.2d",lay,lad,det);
+          for(i=0;i<9;i++) rtd[i] = rt[i];
+          try {
+               rm  = new TRotMatrix(name,name,rtd);
+          } catch (...) {
+               cout << "EXCEPTION in   new TRotMatrix" << endl;
+                return;
+          }
+         top->cd();
+         //sprintf(name,"ND%1.1d2.2d2.2d",lay,lad,det); 
+         try {
+              nd  = new TNode("SPD"," ",box,xg[0],xg[1],xg[2],rm);
+         } catch (...) {
+              cout << "EXCEPTION in new TNode" << endl;
+              return;
+         }
+         nd->SetLineColor(kColorITSSSD);
+         fNodes->Add(nd);
+    }
+
+  for(lay=3;lay<=3;lay++)
+   for(lad=1;lad<=gm->GetNladders(lay);lad++)
+    for(det=1;det<=gm->GetNdetectors(lay);det++){
+          try {
+              box  = new TBRIK ("ActiveSDD","Active volume of SDD","SDD SI DET",
+                                   3.5,0.014,3.763); 
+          } catch (...) {
+             cout << "EXCEPTION in box = new TBRIK" << endl;
+             return;
+         }
+          gm->GetTrans(lay,lad,det,xg[0],xg[1],xg[2]);
+          gm->GetRotMatrix(lay,lad,det,rt);
+          //sprintf(name,"ROT%1.1d2.2d2.2d",lay,lad,det);
+          for(i=0;i<9;i++) rtd[i] = rt[i];
+          try {
+               rm  = new TRotMatrix(name,name,rtd);
+          } catch (...) {
+               cout << "EXCEPTION in   new TRotMatrix" << endl;
+                return;
+          }
+         top->cd();
+         //sprintf(name,"ND%1.1d2.2d2.2d",lay,lad,det); 
+         try {
+              nd  = new TNode("SDD"," ",box,xg[0],xg[1],xg[2],rm);
+         } catch (...) {
+              cout << "EXCEPTION in new TNode" << endl;
+              return;
+         }
+         nd->SetLineColor(kColorITSSSD);
+         fNodes->Add(nd);
+    }
+
+  for(lay=4;lay<=4;lay++)
+   for(lad=1;lad<=gm->GetNladders(lay);lad++)
+    for(det=1;det<=gm->GetNdetectors(lay);det++){
+          try {
+              box  = new TBRIK ("ActiveSDD","Active volume of SDD","SDD SI DET",
+                                   3.5,0.014,3.763); 
+          } catch (...) {
+             cout << "EXCEPTION in box = new TBRIK" << endl;
+             return;
+         }
+          gm->GetTrans(lay,lad,det,xg[0],xg[1],xg[2]);
+          gm->GetRotMatrix(lay,lad,det,rt);
+          //sprintf(name,"ROT%1.1d2.2d2.2d",lay,lad,det);
+          for(i=0;i<9;i++) rtd[i] = rt[i];
+          try {
+               rm  = new TRotMatrix(name,name,rtd);
+          } catch (...) {
+               cout << "EXCEPTION in   new TRotMatrix" << endl;
+                return;
+          }
+         top->cd();
+         //sprintf(name,"ND%1.1d2.2d2.2d",lay,lad,det); 
+         try {
+              nd  = new TNode("SDD"," ",box,xg[0],xg[1],xg[2],rm);
+         } catch (...) {
+              cout << "EXCEPTION in new TNode" << endl;
+              return;
+         }
+         nd->SetLineColor(kColorITSSSD);
+         fNodes->Add(nd);
+    }
+ for(lay=5;lay<=5;lay++)
+   for(lad=1;lad<=gm->GetNladders(lay);lad++)
+    for(det=1;det<=gm->GetNdetectors(lay);det++){
+          try {
+              box  = new TBRIK ("ActiveSSD","Active volume of SSD","SSD SI DET",
+                                   3.65,0.015,2.0); 
+          } catch (...) {
+             cout << "EXCEPTION in box = new TBRIK" << endl;
+             return;
+         }
+          gm->GetTrans(lay,lad,det,xg[0],xg[1],xg[2]);
+          gm->GetRotMatrix(lay,lad,det,rt);
+          //sprintf(name,"ROT%1.1d2.2d2.2d",lay,lad,det);
+          for(i=0;i<9;i++) rtd[i] = rt[i];
+          try {
+               rm  = new TRotMatrix(name,name,rtd);
+          } catch (...) {
+               cout << "EXCEPTION in   new TRotMatrix" << endl;
+                return;
+          }
+         top->cd();
+         //sprintf(name,"ND%1.1d2.2d2.2d",lay,lad,det); 
+         try {
+              nd  = new TNode("SSD"," ",box,xg[0],xg[1],xg[2],rm);
+         } catch (...) {
+              cout << "EXCEPTION in new TNode" << endl;
+              return;
+         }
+         nd->SetLineColor(kColorITSSSD);
+         fNodes->Add(nd);
+    }
+
+ for(lay=6;lay<=6;lay++)
+   for(lad=1;lad<=gm->GetNladders(lay);lad++)
+    for(det=1;det<=gm->GetNdetectors(lay);det++){
+          try {
+              box  = new TBRIK ("ActiveSSD","Active volume of SSD","SSD SI DET",
+                                   3.65,0.015,2.0); 
+          } catch (...) {
+             cout << "EXCEPTION in box = new TBRIK" << endl;
+             return;
+         }
+
+          gm->GetTrans(lay,lad,det,xg[0],xg[1],xg[2]); 
+          gm->GetRotMatrix(lay,lad,det,rt);
+          //sprintf(name,"ROT%1.1d2.2d2.2d",lay,lad,det);
+          for(i=0;i<9;i++) rtd[i] = rt[i];
+          try {
+               rm  = new TRotMatrix(name,name,rtd);
+          } catch (...) {
+               cout << "EXCEPTION in   new TRotMatrix" << endl;
+                return;
+          }
+         top->cd();
+          //sprintf(name,"ND%1.1d2.2d2.2d",lay,lad,det); 
+         try {
+              nd  = new TNode("SSD"," ",box,xg[0],xg[1],xg[2],rm);
+         } catch (...) {
+              cout << "EXCEPTION in new TNode" << endl;
+              return;
+         }
+         nd->SetLineColor(kColorITSSSD);
+         fNodes->Add(nd);
+    }
+
+
+} 
+//_____________________________________________________________________________
+void AliITSv5::CreateMaterials(){
+////////////////////////////////////////////////////////////////////////
+//     Read a file containing the materials for the ITS version 5.
+////////////////////////////////////////////////////////////////////////
     char *filtmp;
-//
+
   filtmp = gSystem->ExpandPathName(fEuclidMaterial.Data());
-//  FILE *file = fopen(fEuclidMaterial.Data(),"r");
+
   FILE *file = fopen(filtmp,"r");
   if(file) {
     fclose(file);
-//    ReadEuclidMedia(fEuclidMaterial.Data());
     ReadEuclidMedia(filtmp);
   } else {
-    Error("CreateMaterials"," THE MEDIA FILE %s DOES NOT EXIST !",
-//       fEuclidMaterial.Data());
-         filtmp);
+    Error("CreateMaterials"," THE MEDIA FILE %s DOES NOT EXIST !",filtmp);
     exit(1);
   } // end if(file)
 }
-
 //_____________________________________________________________________________
 void AliITSv5::CreateGeometry(){
 //////////////////////////////////////////////////////////////////////
@@ -273,20 +561,20 @@ void AliITSv5::CreateGeometry(){
 <pre>
  */
 //End_Html
-////////////////////////////////////////////////////////////////////////
-// Read geometry for the ITS
 //
+//    Read a file containing the geometry for the ITS version 5.
+////////////////////////////////////////////////////////////////////////
+
 
-    Int_t size;
     char topvol[5];
     char *filtmp;
-//
+
   filtmp = gSystem->ExpandPathName(fEuclidGeometry.Data());
   FILE *file = fopen(filtmp,"r");
   delete [] filtmp;
   if(file) {
     fclose(file);
-    printf("Ready to read Euclid geometry file\n");
+    cout << "Ready to read Euclid geometry file" << endl;
     ReadEuclid(fEuclidGeometry.Data(),topvol);
     printf("Read in euclid geometries\n");
   } else {
@@ -295,62 +583,194 @@ void AliITSv5::CreateGeometry(){
     exit(1);
   } // end if(file)
   //
-  //---Place the ITS ghost volume ITSV in its mother volume (ALIC) and make it
-  //     invisible
+  // Place the ITS ghost volume ITSV in its mother volume (ALIC) and make it
+  // invisible
   //
   gMC->Gspos("ITSV",1,"ALIC",0,0,0,0,"ONLY");
   //
-  //---Outputs the geometry tree in the EUCLID/CAD format
+  // Outputs the geometry tree in the EUCLID/CAD format if requested to do so
   
     if (fEuclidOut) {
       gMC->WriteEuclid("ITSgeometry", "ITSV", 1, 5);
     } // end if (fEuclidOut)
 
-    filtmp = gSystem->ExpandPathName(fEuclidGeometry.Data());
+    cout << "finished with euclid geometrys" << endl;
+}
+//______________________________________________________________________
+void AliITSv5::ReadOldGeometry(const char *filename){
+    // read in the file containing the transformations for the active
+    // volumes for the ITS version 5. This is expected to be in a file
+    // ending in .det. This geometry is kept in the AliITSgeom class.
+    Int_t size;
+    char *filtmp;
+    FILE *file;
+
+    if(fITSgeom!=0) delete fITSgeom;
+    filtmp = gSystem->ExpandPathName(filename);
     size = strlen(filtmp);
-    if(size>4){
-       filtmp[size-3] = 'd'; // change from .euc to .det
+    if(size>4 && fGeomDetIn){
+        filtmp[size-3] = 'd'; // change from .euc to .det
         filtmp[size-2] = 'e';
         filtmp[size-1] = 't';
-       file = fopen(filtmp,"r");
-       if(file){ // if file exists use it to fill AliITSgeom structure.
-           fclose(file);
-           printf("ready to read .det file %s\n",filtmp);
-           fITSgeom = new AliITSgeom(filtmp);
-       }else{
-           fITSgeom = 0;
-           // fill AliITSgeom structure from geant structure just filled above
-       }// end if(file)
+        file = fopen(filtmp,"r");
+        if(file){ // if file exists use it to fill AliITSgeom structure.
+            fclose(file);
+            fITSgeom = new AliITSgeom(filtmp);
+            fITSgeom->DefineShapes(3); // if fShape isn't defined define it.
+            // Now define the detector types/shapes.
+            fITSgeom->ReSetShape(kSPD,new AliITSgeomSPD300());
+            fITSgeom->ReSetShape(kSDD,new AliITSgeomSDD300());
+            fITSgeom->ReSetShape(kSSD,new AliITSgeomSSD175());
+        }else{
+            fITSgeom = 0;
+            // fill AliITSgeom structure from geant structure just filled above
+        }// end if(file)
         delete [] filtmp;
     }// end if(size>4)
-    printf("finished with euclid geometrys\n");
 }
+//______________________________________________________________________
+void AliITSv5::InitAliITSgeom(){
+//     Based on the geometry tree defined in Geant 3.21, this
+// routine initilizes the Class AliITSgeom from the Geant 3.21 ITS geometry
+// sturture.
+    if(!(dynamic_cast<TGeant3*>(gMC))) {
+       Error("InitAliITSgeom",
+               "Wrong Monte Carlo. InitAliITSgeom uses TGeant3 calls");
+       return;
+    } // end if
+    cout << "Reading Geometry transformation directly from Geant 3." << endl;
+    const Int_t nlayers = 6;
+    const Int_t ndeep = 7;
+    Int_t itsGeomTreeNames[nlayers][ndeep],lnam[20],lnum[20];
+    Int_t nlad[nlayers],ndet[nlayers];
+    Double_t t[3],r[10];
+    Float_t  par[20],att[20];
+    Int_t    npar,natt,idshape,imat,imed;
+    AliITSGeant3Geometry *ig = new AliITSGeant3Geometry();
+    Int_t mod,lay,lad,det,i,j,k;
+    char *names[nlayers][ndeep] = {
+        {"ALIC","ITSV","ITSD","IT12","I132","I186","ITS1"}, // lay=1
+        {"ALIC","ITSV","ITSD","IT12","I132","I131","ITS2"}, // lay=2
+        {"ALIC","ITSV","ITSD","IT34","I004","I302","ITS3"}, // lay=3
+        {"ALIC","ITSV","ITSD","IT34","I005","I402","ITS4"}, // lay=4
+        {"ALIC","ITSV","ITSD","IT56","I565","I562","ITS5"}, // lay=5
+        {"ALIC","ITSV","ITSD","IT56","I569","I566","ITS6"}};// lay=6
+    Int_t itsGeomTreeCopys[nlayers][ndeep] = {{1,1,1,1,10, 2,4}, // lay=1
+                                              {1,1,1,1,10, 4,4}, // lay=2
+                                              {1,1,1,1,14, 6,1}, // lay=3
+                                              {1,1,1,1,22, 8,1}, // lay=4
+                                              {1,1,1,1,34,23,1}, // lay=5
+                                              {1,1,1,1,38,26,1}};// lay=6
 
+    // Sorry, but this is not very pritty code. It should be replaced
+    // at some point with a version that can search through the geometry
+    // tree its self.
+    for(i=0;i<20;i++) lnam[i] = lnum[i] = 0;
+    for(i=0;i<nlayers;i++)for(j=0;j<ndeep;j++) 
+       itsGeomTreeNames[i][j] = ig->StringToInt(names[i][j]);
+    mod = 0;
+    for(i=0;i<nlayers;i++){
+       k = 1;
+       for(j=0;j<ndeep;j++) if(itsGeomTreeCopys[i][j]!=0)
+           k *= TMath::Abs(itsGeomTreeCopys[i][j]);
+       mod += k;
+    } // end for i
+
+    if(fITSgeom!=0) delete fITSgeom;
+    nlad[0]=20;nlad[1]=40;nlad[2]=14;nlad[3]=22;nlad[4]=34;nlad[5]=38;
+    ndet[0]=4;ndet[1]=4;ndet[2]=6;ndet[3]=8;ndet[4]=22;ndet[5]=25;
+    fITSgeom = new AliITSgeom(0,6,nlad,ndet,mod);
+    mod = -1;
+    for(lay=1;lay<=nlayers;lay++){
+       for(j=0;j<ndeep;j++) lnam[j] = itsGeomTreeNames[lay-1][j];
+       for(j=0;j<ndeep;j++) lnum[j] = itsGeomTreeCopys[lay-1][j];
+       switch (lay){
+       case 1: case 2: // layers 1 and 2 are a bit special
+           lad = 0;
+           for(j=1;j<=itsGeomTreeCopys[lay-1][4];j++){
+               lnum[4] = j;
+               for(k=1;k<=itsGeomTreeCopys[lay-1][5];k++){
+                   lad++;
+                   lnum[5] = k;
+                   for(det=1;det<=itsGeomTreeCopys[lay-1][6];det++){
+                       lnum[6] = det;
+                       mod++;
+                       ig->GetGeometry(ndeep,lnam,lnum,t,r,idshape,npar,natt,
+                                       par,att,imat,imed);
+                       fITSgeom->CreatMatrix(mod,lay,lad,det,kSPD,t,r);
+                       if(!(fITSgeom->IsShapeDefined((Int_t)kSPD)))
+                             fITSgeom->ReSetShape(kSPD,
+                                                 new AliITSgeomSPD300());
+                   } // end for det
+               } // end for k
+            } // end for j
+           break;
+       case 3: case 4: case 5: case 6: // layers 3-6
+           lnum[6] = 1;
+           for(lad=1;lad<=itsGeomTreeCopys[lay-1][4];lad++){
+               lnum[4] = lad;
+               for(det=1;det<=itsGeomTreeCopys[lay-1][5];det++){
+                   lnum[5] = det;
+                   mod++;
+                   ig->GetGeometry(7,lnam,lnum,t,r,idshape,npar,natt,
+                                   par,att,imat,imed);
+                   switch (lay){
+                   case 3: case 4:
+                       fITSgeom->CreatMatrix(mod,lay,lad,det,kSDD,t,r);
+                       if(!(fITSgeom->IsShapeDefined(kSDD))) 
+                           fITSgeom->ReSetShape(kSDD,new AliITSgeomSDD300());
+                       break;
+                   case 5: case 6:
+                       fITSgeom->CreatMatrix(mod,lay,lad,det,kSSD,t,r);
+                       if(!(fITSgeom->IsShapeDefined(kSSD))) 
+                           fITSgeom->ReSetShape(kSSD,new AliITSgeomSSD175());
+                       break;
+                       } // end switch
+               } // end for det
+           } // end for lad
+           break;
+       } // end switch
+    } // end for lay
+    return;
+}
 //_____________________________________________________________________________
 void AliITSv5::Init(){
-    //
-    // Initialise the ITS after it has been created
-    //
-    Int_t i,j,l;
-
-    fIdN    = fId5N;
-    fIdName = new char*[fId5N];
-    fIdSens = new Int_t[fId5N];
-    for(i=0;i<fId5N;i++) {
-       l = strlen(fId5Name[i]);
-       fIdName[i] = new char[l+1];
-       for(j=0;j<l;j++) fIdName[i][j] = fId5Name[i][j];
-       fIdName[i][l] = '\0'; // Null terminate this string.
-    } // end for i
+////////////////////////////////////////////////////////////////////////
+//     Initialise the ITS after it has been created.
+////////////////////////////////////////////////////////////////////////
+    Int_t i;
+
+    cout << endl;
+    for(i=0;i<30;i++) cout << "*";cout << " ITSv5_Init ";
+    for(i=0;i<30;i++) cout << "*";cout << endl;
+//
+    if(fRead[0]=='\0') strncpy(fRead,fEuclidGeomDet,60);
+    if(fWrite[0]=='\0') strncpy(fWrite,fEuclidGeomDet,60);
+    if(fGeomDetIn && !fGeomOldDetIn){
+       if(fITSgeom!=0) delete fITSgeom;
+       fITSgeom = new AliITSgeom();
+       fITSgeom->ReadNewFile(fRead);
+    } // end if
+    if(fGeomDetIn &&  fGeomOldDetIn) ReadOldGeometry(fEuclidGeometry.Data());
 
+    if(!fGeomDetIn) this->InitAliITSgeom();
+    if(fGeomDetOut) fITSgeom->WriteNewFile(fWrite);
     AliITS::Init();
-} 
+//
+    for(i=0;i<72;i++) cout << "*";
+    cout << endl;
+}
 //_____________________________________________________________________________
 void AliITSv5::StepManager(){
-  //
-  // Called for every step in the ITS
-  //
+////////////////////////////////////////////////////////////////////////
+//    Called for every step in the ITS, then calles the AliITShit class
+// creator with the information to be recoreded about that hit.
+//     The value of the macro ALIITSPRINTGEOM if set to 1 will allow the
+// printing of information to a file which can be used to create a .det
+// file read in by the routine CreateGeometry(). If set to 0 or any other
+// value except 1, the default behavior, then no such file is created nor
+// it the extra variables and the like used in the printing allocated.
+////////////////////////////////////////////////////////////////////////
   Int_t          copy, id;
   Int_t          copy1,copy2;
   Float_t        hits[8];
@@ -442,25 +862,3 @@ void AliITSv5::StepManager(){
   new(lhits[fNhits++]) AliITShit(fIshunt,gAlice->CurrentTrack(),vol,hits);
   return;
 }
-//____________________________________________________________________________
-void AliITSv5::Streamer(TBuffer &R__b)
-{
-   // Stream an object of class AliITSv5.
-
-   if (R__b.IsReading()) {
-      Version_t R__v = R__b.ReadVersion(); if (R__v) { }
-      AliITS::Streamer(R__b);
-      // This information does not need to be read. It is "hard wired"
-      // into this class via its creators.
-      //R__b >> fId5N;
-      //R__b.ReadArray(fId5Name);
-   } else {
-      R__b.WriteVersion(AliITSv5::IsA());
-      AliITS::Streamer(R__b);
-      // This information does not need to be saved. It is "hard wired"
-      // into this class via its creators.
-      //R__b << fId5N;
-      //R__b.WriteArray(fId5Name, __COUNTER__);
-   }
-}
-