]> git.uio.no Git - u/mrichter/AliRoot.git/blobdiff - ITS/AliITSvSPD02.cxx
Adding MUON HLT code to the repository.
[u/mrichter/AliRoot.git] / ITS / AliITSvSPD02.cxx
index 3486ba46b882154c191db848a40be23a254fd519..01e4d100c7923571c008df097e922e28b48835b2 100644 (file)
  * provided "as is" without express or implied warranty.                  *
  **************************************************************************/
 
-/*
-$Log$
-*/
+/* $Id$ */
+
 #include <Riostream.h>
-#include <stdio.h>
-#include <stdlib.h>
 #include <TMath.h>
 #include <TGeometry.h>
 #include <TNode.h>
-#include <TTUBE.h>
-#include <TTUBS.h>
-#include <TPCON.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 "AliRun.h"
 #include "AliMagF.h"
-#include "AliConst.h"
 #include "AliITSGeant3Geometry.h"
 #include "AliTrackReference.h"
 #include "AliITShit.h"
@@ -44,7 +32,6 @@ $Log$
 #include "AliITSvSPD02.h"
 #include "AliITSgeom.h"
 #include "AliITSgeomSPD.h"
-#include "AliITSgeomSDD.h"
 #include "AliITSgeomSSD.h"
 #include "AliITSDetType.h"
 #include "AliITSresponseSPD.h"
@@ -53,18 +40,36 @@ $Log$
 #include "AliITSsegmentationSPD.h"
 #include "AliITSsegmentationSDD.h"
 #include "AliITSsegmentationSSD.h"
-#include "AliITSsimulationSPD.h"
+#include "AliITSsimulationSPDdubna.h"
 #include "AliITSsimulationSDD.h"
 #include "AliITSsimulationSSD.h"
-#include "AliITSClusterFinderSPD.h"
-#include "AliITSClusterFinderSDD.h"
-#include "AliITSClusterFinderSSD.h"
-
+#include "AliMC.h"
 
+///////////////////////////////////////////////////////////////////////
+// Step manager and 
+// geometry class
+// for the ITS 
+// SPD test beam
+// geometry of summer 2002
+// 
+///////////////////////////////////////////////////////////////////////
 ClassImp(AliITSvSPD02)
 
 //______________________________________________________________________
-AliITSvSPD02::AliITSvSPD02() {
+AliITSvSPD02::AliITSvSPD02():
+AliITS(),
+fGeomDetOut(kFALSE),
+fGeomDetIn(kFALSE),
+fMajorVersion(1),
+fMinorVersion(2),
+fGeomNumber(2002),
+fEuclidGeomDet(),
+fRead(),
+fWrite(),
+fDet1(300.0),
+fDet2(300.0),
+fChip1(300.0),
+fChip2(300.0){
     ////////////////////////////////////////////////////////////////////////
     // Standard default constructor for the ITS SPD test beam 2002 version 1.
     // Inputs:
@@ -76,24 +81,29 @@ AliITSvSPD02::AliITSvSPD02() {
     ////////////////////////////////////////////////////////////////////////
     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
-    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';
 }
 //______________________________________________________________________
-AliITSvSPD02::AliITSvSPD02(const char *title) : AliITS("ITS", title){
+AliITSvSPD02::AliITSvSPD02(const char *title,Int_t gn) : AliITS("ITS", title),
+fGeomDetOut(kFALSE),
+fGeomDetIn(kFALSE),
+fMajorVersion(1),
+fMinorVersion(2),
+fGeomNumber(2002),
+fEuclidGeomDet(),
+fRead(),
+fWrite(),
+fDet1(300.0),
+fDet2(300.0),
+fChip1(300.0),
+fChip2(300.0){
     ////////////////////////////////////////////////////////////////////////
     //    Standard constructor for the ITS SPD testbeam 2002 version 1.
     // Inputs:
     //    const char *title    title for this ITS geometry.
+    //    Int_t      gn        Geometry version number (year) default 2002.
     // Outputs:
     //    none.
     // Return:
@@ -101,17 +111,13 @@ AliITSvSPD02::AliITSvSPD02(const char *title) : AliITS("ITS", title){
     ////////////////////////////////////////////////////////////////////////
     Int_t i;
 
+    fGeomNumber = gn;
     fIdN = 2;
     fIdName = new TString[fIdN];
     fIdName[0] = "IMBS";
     fIdName[1] = "ITST";
     fIdSens    = new Int_t[fIdN];
     for(i=0;i<fIdN;i++) fIdSens[i] = 0;
-    fMajorVersion = IsVersion();
-    fMinorVersion = 2;
-    fEuclidOut    = kFALSE; // Don't write Euclide file
-    fGeomDetOut   = kFALSE; // Don't write .det file
-    fGeomDetIn    = kFALSE; // Don't Read .det file
     SetThicknessDet1();
     SetThicknessDet2();
     SetThicknessChip1();
@@ -123,7 +129,7 @@ AliITSvSPD02::AliITSvSPD02(const char *title) : AliITS("ITS", title){
     strncpy(fWrite,fEuclidGeomDet,60);
 }
 //______________________________________________________________________
-AliITSvSPD02::AliITSvSPD02(const AliITSvSPD02 &source){
+AliITSvSPD02::AliITSvSPD02(const AliITSvSPD02 &source) : AliITS(source){
     ////////////////////////////////////////////////////////////////////////
     //     Copy Constructor for ITS SPD test beam 2002 version 1.
     // This class is not to be copied. Function only dummy.
@@ -188,8 +194,40 @@ void AliITSvSPD02::BuildGeometry(){
     //    none.
     ////////////////////////////////////////////////////////////////////////
     // Get the top alice volume.
-    TNode *ALIC = gAlice->GetGeometry()->GetNode("alice");
-    ALIC->cd();
+
+    switch (fGeomNumber){
+    case 2002:
+        BuildGeometry2002();
+        break;
+    default:
+        BuildGeometry2002();
+        break;
+    } // end switch
+}
+//______________________________________________________________________
+void AliITSvSPD02::BuildGeometry2002(){
+    ////////////////////////////////////////////////////////////////////////
+    //    Geometry builder for the ITS SPD test beam 2002 version 1.
+    //    ALIC    ALICE Mother Volume
+    //     |- ITSV     ITS Mother Volume
+    //         |- IDET       Detector under Test
+    //         |   |- ITS0       SPD Si Chip
+    //         |   |  |- ITST      SPD Sensitivve Volume
+    //         |   |- IPC0 *5    Readout chip
+    //         |- ITEL *4    SPD Telescope
+    //             |- IMB0       SPD Si Chip
+    //             |   |- IMBS     SPD Sensitive volume
+    //             |- ICMB       Chip MiniBus.
+    // Inputs:
+    //    none.
+    // Outputs:
+    //    none.
+    // Return:
+    //    none.
+    ////////////////////////////////////////////////////////////////////////
+    // Get the top alice volume.
+    TNode *aALIC = gAlice->GetGeometry()->GetNode("alice");
+    aALIC->cd();
 
     // Define ITS Mother Volume
     Float_t data[3];
@@ -197,38 +235,39 @@ void AliITSvSPD02::BuildGeometry(){
     Float_t dchipMiniBus=750.0E-4,dchiptest=300.0E-4;
     //Float_t yposition= 0.0;
     TRotMatrix *r0 = new TRotMatrix("ITSidrotm0","ITSidrotm0",
-                                   90.0,0,0.0,0,90.0,270.0);
+                                    90.0,0,0.0,0,90.0,270.0);
     data[0] = 10.0;
     data[1] = 50.0;
     data[2] = 100.0;
-    TBRIK *ITSVshape = new TBRIK("ITSVshape","ITS Logical Mother Volume","Air",
-                                data[0],data[1],data[2]);
-    TNode *ITSV = new TNode("ITSV","ITS Mother Volume",ITSVshape,
-                           0.0,0.0,0.0,0,0);
-    ITSV->cd(); // set ourselve into ITSV subvolume of ALIC
+    TBRIK *iITSVshape = new TBRIK("ITSVshape",
+                                  "ITS Logical Mother Volume","Air",
+                                  data[0],data[1],data[2]);
+    TNode *iITSV = new TNode("ITSV","ITS Mother Volume",iITSVshape,
+                             0.0,0.0,0.0,0,0);
+    iITSV->cd(); // set ourselve into ITSV subvolume of aALIC
 
     // SPD part of telescope (MiniBuS)
     data[0] = 0.705;
     data[1] = 0.5*ddettelescope;
     data[2] = 3.536;
-    TBRIK *IMB0shape = new TBRIK("IMB0shape","SPD wafer","Si",
+    TBRIK *iIMB0shape = new TBRIK("IMB0shape","SPD wafer","Si",
                                 data[0],data[1],data[2]);
     Float_t detMiniBusX,detMiniBusY,detMiniBusZ;
     data[0] = detMiniBusX = 0.64;
     data[1] = detMiniBusY = 0.5*ddettelescope;
     data[2] = detMiniBusZ = 3.48;
-    TBRIK *IMBSshape = new TBRIK("IMBSshape","SPD Sensitive volume","Si",
+    TBRIK *iIMBSshape = new TBRIK("IMBSshape","SPD Sensitive volume","Si",
                                 data[0],data[1],data[2]);
     Float_t chipMiniBusX,chipMiniBusY,chipMiniBusZ;
     data[0] = chipMiniBusX = 0.793;
     data[1] = chipMiniBusY = 0.5*dchipMiniBus;
     data[2] = chipMiniBusZ = 0.68;
-    TBRIK *ICMBshape = new TBRIK("ICMBshape","chip Minibus","Si",
+    TBRIK *iICMBshape = new TBRIK("ICMBshape","chip Minibus","Si",
                                 data[0],data[1],data[2]);
     data[0] = TMath::Max(detMiniBusX,chipMiniBusX);
     data[1] = detMiniBusY+chipMiniBusY;
     data[2] = TMath::Max(detMiniBusZ,chipMiniBusZ);
-    TBRIK *ITELshape = new TBRIK("ITELshape","ITELshape","Air",
+    TBRIK *iITELshape = new TBRIK("ITELshape","ITELshape","Air",
                                 data[0],data[1],data[2]);
 
     // SPD under test
@@ -236,23 +275,23 @@ void AliITSvSPD02::BuildGeometry(){
     data[0] = 0.705;
     data[1] = ddettest;
     data[2] = 3.536;
-    TBRIK *ITS0shape = new TBRIK("ITS0shape","SPD wafer","Si",
+    TBRIK *iITS0shape = new TBRIK("ITS0shape","SPD wafer","Si",
                                 data[0],data[1],data[2]); // contains detector
     data[0] = spdX = 0.64;
     data[1] = spdY = ddettest;
     data[2] = spdZ = 3.48;
-    TBRIK *ITSTshape = new TBRIK("ITSTshape","SPD sensitive volume","Si",
+    TBRIK *iITSTshape = new TBRIK("ITSTshape","SPD sensitive volume","Si",
                                 data[0],data[1],data[2]);
     // ITS0 with no translation and unit rotation matrix.
     data[0] = spdchipX = 0.793;
     data[1] = spdchipY = dchiptest;
     data[2] = spdchipZ = 0.68;
-    TBRIK *IPC0shape = new TBRIK("IPC0shape","Readout Chips","Si",
+    TBRIK *iIPC0shape = new TBRIK("IPC0shape","Readout Chips","Si",
                                 data[0],data[1],data[2]); // chip under test
     data[0] = TMath::Max(spdchipX,spdX);
     data[1] = spdY+spdchipY;
     data[2] = TMath::Max(spdchipZ,spdZ);
-    TBRIK *IDETshape = new TBRIK("IDETshape","Detector Under Test","Air",
+    TBRIK *iIDETshape = new TBRIK("IDETshape","Detector Under Test","Air",
                                 data[0],data[1],data[2]);
     // Place volumes in geometry
     Int_t i,j;
@@ -261,44 +300,44 @@ void AliITSvSPD02::BuildGeometry(){
     pz[1] = pz[0]+2.0;
     pz[2] = pz[1]+38.0+spdY+spdchipY+34.5;
     pz[3] = pz[2]+2.0;
-    TNode *ITEL[4],*ICMB[4],*IMB0[4],*IMBS[4];
-    TNode *IDET = new TNode("IDET","Detector Under Test",IDETshape,
+    TNode *iITEL[4],*iICMB[4],*iIMB0[4],*iIMBS[4];
+    TNode *iIDET = new TNode("IDET","Detector Under Test",iIDETshape,
                            0.0,0.0,pz[1]+38.0,r0,0);
-    IDET->cd();
-    TNode *ITS0 = new TNode("ITS0","SPD Chip",ITS0shape,
-                           0.0,IDETshape->GetDy()-spdY,0.0,0,0);
-    TNode *IPC0[5];
+    iIDET->cd();
+    TNode *iITS0 = new TNode("ITS0","SPD Chip",iITS0shape,
+                           0.0,iIDETshape->GetDy()-spdY,0.0,0,0);
+    TNode *iIPC0[5];
     for(i=0;i<5;i++) { //place readout chips on the back of SPD chip under test
-       sprintf(name,"IPC0%d",i);
-       sprintf(title,"Readout chip #%d",i+1);
-       j = i-2;
-       IPC0[i] = new TNode(name,title,IPC0shape,
-                           0.0,spdchipY-IDETshape->GetDy(),
-                           j*2.0*spdchipZ+j*0.25*(spdZ-5.*spdchipZ),0,0);
+        sprintf(name,"IPC0%d",i);
+        sprintf(title,"Readout chip #%d",i+1);
+        j = i-2;
+        iIPC0[i] = new TNode(name,title,iIPC0shape,
+                             0.0,spdchipY-iIDETshape->GetDy(),
+                             j*2.0*spdchipZ+j*0.25*(spdZ-5.*spdchipZ),0,0);
     } // end for i
-    ITS0->cd();
-    TNode *ITST = new TNode("ITST","SPD sensitive volume",ITSTshape,
-                           0.0,0.0,0.0,0,0);
+    iITS0->cd();
+    TNode *iITST = new TNode("ITST","SPD sensitive volume",iITSTshape,
+                             0.0,0.0,0.0,0,0);
     for(Int_t i=0;i<4;i++){
-       ITSV->cd();
-       sprintf(name,"ITEL%d",i);
-       sprintf(title,"Test beam telescope element #%d",i+1);
-       ITEL[i] = new TNode(name,title,ITELshape,px,py,pz[i],r0,0);
-       ITEL[i]->cd();
-       ICMB[i] = new TNode("ICMB","Chip MiniBus",ICMBshape,
-                           0.0,-ITELshape->GetDy()+detMiniBusY,0.0,0,0);
-       IMB0[i] = new TNode("IMB0","Chip MiniBus",IMB0shape,
-                           0.0, ITELshape->GetDy()-detMiniBusY,0.0,0,0);
-       IMB0[i]->cd();
-       IMBS[i] = new TNode("IMBS","IMBS",IMBSshape,0.0,0.0,0.0,0,0);
-       // place IMBS inside IMB0 with no translation and unit rotation matrix.
+        iITSV->cd();
+        sprintf(name,"ITEL%d",i);
+        sprintf(title,"Test beam telescope element #%d",i+1);
+        iITEL[i] = new TNode(name,title,iITELshape,px,py,pz[i],r0,0);
+        iITEL[i]->cd();
+        iICMB[i] = new TNode("ICMB","Chip MiniBus",iICMBshape,
+                             0.0,-iITELshape->GetDy()+detMiniBusY,0.0,0,0);
+        iIMB0[i] = new TNode("IMB0","Chip MiniBus",iIMB0shape,
+                             0.0, iITELshape->GetDy()-detMiniBusY,0.0,0,0);
+        iIMB0[i]->cd();
+        iIMBS[i] = new TNode("IMBS","IMBS",iIMBSshape,0.0,0.0,0.0,0,0);
+        // place IMBS inside IMB0 with no translation and unit rotation matrix.
     } // end for i
-    ALIC->cd();
-    ITST->SetLineColor(kYellow);
-    fNodes->Add(ITST);
+    aALIC->cd();
+    iITST->SetLineColor(kYellow);
+    fNodes->Add(iITST);
     for(i=0;i<4;i++){
-       IMBS[i]->SetLineColor(kGreen);
-       fNodes->Add(IMBS[i]);
+        iIMBS[i]->SetLineColor(kGreen);
+        fNodes->Add(iIMBS[i]);
     } // end for i
 }
 //______________________________________________________________________
@@ -322,6 +361,37 @@ void AliITSvSPD02::CreateGeometry(){
     // Return:
     //    none.
     ////////////////////////////////////////////////////////////////////////
+
+    switch (fGeomNumber){
+    case 2002:
+        CreateGeometry2002();
+        break;
+    default:
+        CreateGeometry2002();
+        break;
+    } // end switch
+}
+//______________________________________________________________________
+void AliITSvSPD02::CreateGeometry2002(){
+    ////////////////////////////////////////////////////////////////////////
+    //  This routine defines and Creates the geometry for version 1 of the ITS.
+    //    ALIC    ALICE Mother Volume
+    //     |- ITSV     ITS Mother Volume
+    //         |- IDET       Detector under Test
+    //         |   |- ITS0       SPD Si Chip
+    //         |   |  |- ITST      SPD Sensitivve Volume
+    //         |   |- IPC0 *5    Readout chip
+    //         |- ITEL *4    SPD Telescope
+    //             |- IMB0       SPD Si Chip
+    //             |   |- IMBS     SPD Sensitive volume
+    //             |- ICMB       Chip MiniBus.
+    // Inputs:
+    //    none.
+    // Outputs:
+    //    none.
+    // Return:
+    //    none.
+    ////////////////////////////////////////////////////////////////////////
     Float_t data[49];
     // Define media off-set
     Int_t *idtmed = fIdtmed->GetArray()+1; // array of media indexes
@@ -330,6 +400,7 @@ void AliITSvSPD02::CreateGeometry(){
     Float_t dchipMiniBus=750.0E-4,dchiptest=300.0E-4;
     Float_t yposition= 0.0;
 
+    if(gMC==0) return;
     // Define Rotation-reflextion Matrixes needed
     // 0 is the unit matrix
     AliMatrix(idrotm[0], 90.0,0.0, 0.0,0.0, 90.0,270.0);
@@ -434,6 +505,37 @@ void AliITSvSPD02::CreateMaterials(){
     // Return:
     //    none.
     /////////////////////////////////////////////////////////////////////////
+
+    switch (fGeomNumber){
+    case 2002:
+        CreateMaterials2002();
+        break;
+    default:
+        CreateMaterials2002();
+        break;
+    } // end switch
+}
+//______________________________________________________________________
+void AliITSvSPD02::CreateMaterials2002(){
+    ////////////////////////////////////////////////////////////////////////
+    //
+    // Create ITS SPD test beam materials
+    //     This function defines the default materials used in the Geant
+    // Monte Carlo simulations for the geometries AliITSv1, AliITSv3,
+    // AliITSvSPD02.
+    // In general it is automatically replaced by
+    // the CreatMaterials routine defined in AliITSv?. Should the function
+    // CreateMaterials not exist for the geometry version you are using this
+    // one is used. See the definition found in AliITSv5 or the other routine
+    // for a complete definition.
+    //
+    // Inputs:
+    //    none.
+    // Outputs:
+    //    none.
+    // Return:
+    //    none.
+    /////////////////////////////////////////////////////////////////////////
     Float_t tmaxfdSi = 0.1; // Degree
     Float_t stemaxSi = 0.0075; // cm
     Float_t deemaxSi = 0.1; // Fraction of particle's energy 0<deemax<=1
@@ -449,14 +551,14 @@ void AliITSvSPD02::CreateMaterials(){
     Float_t fieldm = gAlice->Field()->Max();
 
     AliMaterial(1,"AIR$",0.14610E+02,0.73000E+01,0.12050E-02,
-               0.30423E+05,0.99900E+03);
+                0.30423E+05,0.99900E+03);
     AliMedium(1,"AIR$",1,0,ifield,fieldm,tmaxfdAir,stemaxAir,deemaxAir,
-             epsilAir,stminAir);
+              epsilAir,stminAir);
 
     AliMaterial(2,"SI$",0.28086E+02,0.14000E+02,0.23300E+01,
-               0.93600E+01,0.99900E+03);
+                0.93600E+01,0.99900E+03);
     AliMedium(2,"SI$",2,0,ifield,fieldm,tmaxfdSi,stemaxSi,deemaxSi,
-             epsilSi,stminSi);
+              epsilSi,stminSi);
 }
 //______________________________________________________________________
 void AliITSvSPD02::InitAliITSgeom(){
@@ -469,78 +571,91 @@ void AliITSvSPD02::InitAliITSgeom(){
     //    none.
     // Return:
     //    none.
-    if(strcmp(gMC->GetName(),"TGeant3")) {
-       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 = 2;
-    const Int_t ndeep = 5;
-    Int_t itsGeomTreeNames[nlayers][ndeep],lnam[20],lnum[20];
-    Int_t nlad[nlayers],ndet[nlayers];
+    const Int_t kltypess = 2;
+    const Int_t knlayers = 5;
+    const Int_t kndeep = 5;
+    Int_t itsGeomTreeNames[kltypess][kndeep],lnam[20],lnum[20];
+    Int_t nlad[knlayers],ndet[knlayers];
     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_t names[nlayers][ndeep][4];
-    Int_t itsGeomTreeCopys[nlayers][ndeep];
-    Char_t *namesA[nlayers][ndeep] = {
-     {"ALIC","ITSV","ITEL","IMB0","IMBS"}, // lay=1
-     {"ALIC","ITSV","IDET","ITS0","ITST"}};// Test SPD
-    Int_t itsGeomTreeCopysA[nlayers][ndeep]= {{1,1,4,1,1},// lay=1
-                                             {1,1,1,1,1}};//lay=2 TestSPD
-    for(i=0;i<nlayers;i++)for(j=0;j<ndeep;j++){
-       for(k=0;k<4;k++) names[i][j][k] = namesA[i][j][k];
-       itsGeomTreeCopys[i][j] = itsGeomTreeCopysA[i][j];
+    AliITSGeant3Geometry *ig=0;
+    Int_t mod=0,typ=0,lay=0,lad=0,det=0,cpy=0,i=0,j=0,k=0;
+
+    if(gMC==0) {// No Monti Carlo to init. Default set fITSgeom by hand
+        if(fITSgeom!=0) delete fITSgeom;
+        nlad[0]=1;nlad[1]=1;nlad[2]=1;nlad[3]=1;nlad[4]=1;
+        ndet[0]=1;ndet[1]=1;ndet[2]=1;ndet[3]=1;ndet[4]=1;
+        fITSgeom = new AliITSgeom(0,knlayers,nlad,ndet,mod);
+        r[0] = 1.0; r[1] =  0.0; r[2] = 0.0;
+        r[3] = 0.0; r[4] =  0.0; r[5] = 1.0;
+        r[6] = 0.0; r[7] = -1.0; r[8] = 0.0; r[9] = 1.0; // not Unit.
+        Double_t tt[5][3]={{0.0,0.0,-37.9625}, // 0,0,P00Z+.5*chipMiniBusY
+                           {0.0,0.0,-35.9625}, // 0,0,P00Z+2+.5*chipMiniBusY
+                           {0.0,0.0,  2.0150}, // 0,0,P01Z+38+SPDchipY
+                           {0.0,0.0, 36.5375}, //0,0,PdetZ+34.5+.5*chipMiniBusY
+                           {0.0,0.0, 38.5375}};// 0,0,P00Z+2+.5*chipMiniBusY
+        for(mod=0;mod<5;mod++){
+            lay = 1;
+            lad = 1;
+            det = mod+1;
+            t[0] = tt[mod][0]; t[1] = tt[mod][1]; t[2] = tt[mod][2];
+            fITSgeom->CreatMatrix(mod,lay,lad,det,kSPD,t,r);
+            npar=3;par[0]=0.64;par[1]=0.5*300.0E-4;par[2]=3.48;
+            fITSgeom->ReSetShape(kSPD,new AliITSgeomSPD425Short(npar,par));
+        } // end for det
+        return;
+    } // end if gMC==0
+    if(strcmp(gMC->GetName(),"TGeant3")) {
+        Error("InitAliITSgeom",
+              "Wrong Monte Carlo. InitAliITSgeom uses TGeant3 calls");
+        return;
+    } // end if
+    cout << "Reading Geometry transformation directly from Geant 3." << endl;
+    ig = new AliITSGeant3Geometry();
+    Char_t names[kltypess][kndeep][4];
+    Int_t itsGeomTreeCopys[kltypess][kndeep];
+    const char *namesA[kltypess][kndeep] = {
+        {"ALIC","ITSV","ITEL","IMB0","IMBS"}, // lay=1
+        {"ALIC","ITSV","IDET","ITS0","ITST"}};// Test SPD
+    Int_t itsGeomTreeCopysA[kltypess][kndeep]= {{1,1,4,1,1},// lay=1
+                                                {1,1,1,1,1}};//lay=2 TestSPD
+    for(i=0;i<kltypess;i++)for(j=0;j<kndeep;j++){
+        for(k=0;k<4;k++) names[i][j][k] = namesA[i][j][k];
+        itsGeomTreeCopys[i][j] = itsGeomTreeCopysA[i][j];
     } // end for i,j
     // 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.
     cout << "Reading Geometry informaton from Geant3 common blocks" << endl;
     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
-
+    for(i=0;i<kltypess;i++)for(j=0;j<kndeep;j++) 
+        strncpy((char*) &itsGeomTreeNames[i][j],names[i][j],4);
+    // itsGeomTreeNames[i][j] = ig->StringToInt(names[i][j]);
+    mod = 5;
     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 AliITSgeomSPD425Short(npar,par));
-                   } // end for det
-               } // end for k
-            } // end for j
-           break;
-       } // end switch
-    } // end for lay
+    nlad[0]=1;nlad[1]=1;nlad[2]=1;nlad[3]=1;nlad[4]=1;
+    ndet[0]=1;ndet[1]=1;ndet[2]=1;ndet[3]=1;ndet[4]=1;
+    fITSgeom = new AliITSgeom(0,knlayers,nlad,ndet,mod);
+    for(typ=1;typ<=kltypess;typ++){
+        for(j=0;j<kndeep;j++) lnam[j] = itsGeomTreeNames[typ-1][j];
+        for(j=0;j<kndeep;j++) lnum[j] = itsGeomTreeCopys[typ-1][j];
+        lad = 1;
+        det = 1;
+        for(cpy=1;cpy<=itsGeomTreeCopys[typ-1][2];cpy++){
+            lnum[2] = cpy;
+            lay = cpy;
+            if(cpy>2 && typ==1) lay = cpy +1;
+            if(typ==2) lay = 3;
+            mod = lay-1;
+            ig->GetGeometry(kndeep,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 AliITSgeomSPD425Short(npar,par));
+        } // end for cpy
+    } // end for typ
     return;
 }
 //______________________________________________________________________
@@ -560,7 +675,7 @@ void AliITSvSPD02::Init(){
     for(i=0;i<26;i++) cout << "*";
     cout << " ITSvSPD02" << fMinorVersion << "_Init ";
     for(i=0;i<25;i++) cout << "*";cout << endl;
-//
+
     if(fRead[0]=='\0') strncpy(fRead,fEuclidGeomDet,60);
     if(fWrite[0]=='\0') strncpy(fWrite,fEuclidGeomDet,60);
     if(fITSgeom!=0) delete fITSgeom;
@@ -569,10 +684,11 @@ void AliITSvSPD02::Init(){
     if(!fGeomDetIn) this->InitAliITSgeom();
     if(fGeomDetOut) fITSgeom->WriteNewFile(fWrite);
     AliITS::Init();
-//
+
     for(i=0;i<72;i++) cout << "*";
     cout << endl;
-    fIDMother = gMC->VolId("ITSV"); // ITS Mother Volume ID.
+    if(gMC) fIDMother = gMC->VolId("ITSV"); // ITS Mother Volume ID.
+    else fIDMother = 0;
 }
 //______________________________________________________________________
 void AliITSvSPD02::SetDefaults(){
@@ -594,8 +710,11 @@ void AliITSvSPD02::SetDefaults(){
 
     //SPD
     iDetType=DetType(kSPD);
-    s0 = (AliITSgeomSPD*) fITSgeom->GetShape(kSPD);// Get shape info. Do it this way for now.
+    // Get shape info. Do it this way for now.
+    s0 = (AliITSgeomSPD*) fITSgeom->GetShape(kSPD);
     AliITSresponse *resp0=new AliITSresponseSPD();
+    resp0->SetTemperature();
+    resp0->SetDistanceOverVoltage();
     SetResponseModel(kSPD,resp0);
     AliITSsegmentationSPD *seg0=new AliITSsegmentationSPD(fITSgeom);
     seg0->SetDetSize(s0->GetDx()*2.*kconv, // base this on AliITSgeomSPD
@@ -617,9 +736,21 @@ void AliITSvSPD02::SetDefaults(){
     if (strstr(kData0,"real")) iDetType->ClassNames("AliITSdigit",
                                                    "AliITSRawClusterSPD");
     else iDetType->ClassNames("AliITSdigitSPD","AliITSRawClusterSPD");
-//    SetSimulationModel(kSPD,new AliITSsimulationSPD(seg0,resp0));
+//    SetSimulationModel(kSPD,new AliITSsimulationSPDdubna(seg0,resp0));
 //    iDetType->ReconstructionModel(new AliITSClusterFinderSPD());
+    delete DetType(kSDD);
+    fDetTypes->AddAt(0,kSDD);
+    delete DetType(kSSD);
+    fDetTypes->AddAt(0,kSSD);
+/*
+    SetResponseModel(kSDD,new AliITSresponseSDD());
+    SetSegmentationModel(kSDD,new AliITSsegmentationSDD());
+    DetType(kSDD)->ClassNames("AliITSdigitSDD","AliITSRawClusterSDD");
 
+    SetResponseModel(kSSD,new AliITSresponseSSD());
+    SetSegmentationModel(kSSD,new AliITSsegmentationSSD());
+    DetType(kSSD)->ClassNames("AliITSdigitSSD","AliITSRawClusterSSD");
+*/
     if(kNTYPES>3){
        Warning("SetDefaults",
                "Only the four basic detector types are initialised!");
@@ -627,7 +758,70 @@ void AliITSvSPD02::SetDefaults(){
     return;
 }
 //______________________________________________________________________
-void AliITSvSPD02::DrawModule(){
+void AliITSvSPD02::SetDefaultSimulation(){
+    // sets the default simulation.
+    // Inputs:
+    //      none.
+    // Outputs:
+    //      none.
+    // Return:
+    //      none.
+
+    AliITSDetType *iDetType;
+    AliITSsimulation *sim;
+    AliITSsegmentation *seg;
+    AliITSresponse *res;
+    iDetType=DetType(kSPD);
+    if(iDetType){
+        sim = iDetType->GetSimulationModel();
+        if (!sim) {
+            seg = (AliITSsegmentation*)iDetType->GetSegmentationModel();
+            res = (AliITSresponse*)iDetType->GetResponseModel();
+            sim = new AliITSsimulationSPDdubna(seg,res,0);
+            SetSimulationModel(kSPD,sim);
+        }else{ // simulation exists, make sure it is set up properly.
+            if(sim->GetResponseModel()==0) sim->SetResponseModel(
+                (AliITSresponse*)iDetType->GetResponseModel());
+            if(sim->GetSegmentationModel()==0) sim->SetSegmentationModel(
+                (AliITSsegmentation*)iDetType->GetSegmentationModel());
+            sim->Init();
+        } // end if
+    } // end if iDetType
+    iDetType=DetType(kSDD);
+    if(iDetType){
+        sim = iDetType->GetSimulationModel();
+        if (!sim) {
+            seg = (AliITSsegmentation*)iDetType->GetSegmentationModel();
+            res = (AliITSresponse*)iDetType->GetResponseModel();
+            sim = new AliITSsimulationSDD(seg,res);
+            SetSimulationModel(kSDD,sim);
+        }else{ // simulation exists, make sure it is set up properly.
+            if(sim->GetResponseModel()==0) sim->SetResponseModel(
+                (AliITSresponse*)iDetType->GetResponseModel());
+            if(sim->GetSegmentationModel()==0) sim->SetSegmentationModel(
+                (AliITSsegmentation*)iDetType->GetSegmentationModel());
+            sim->Init();
+        } //end if
+    } // end if iDetType
+    iDetType=DetType(kSSD);
+    if(iDetType){
+        sim = iDetType->GetSimulationModel();
+        if (!sim) {
+            seg = (AliITSsegmentation*)iDetType->GetSegmentationModel();
+            res = (AliITSresponse*)iDetType->GetResponseModel();
+            sim = new AliITSsimulationSSD(seg,res);
+            SetSimulationModel(kSSD,sim);
+        }else{ // simulation exists, make sure it is set up properly.
+            if(sim->GetResponseModel()==0) sim->SetResponseModel(
+                (AliITSresponse*)iDetType->GetResponseModel());
+            if(sim->GetSegmentationModel()==0) sim->SetSegmentationModel(
+                (AliITSsegmentation*)iDetType->GetSegmentationModel());
+            sim->Init();
+        } // end if
+    } // end if iDetType
+}
+//______________________________________________________________________
+void AliITSvSPD02::DrawModule() const {
     ////////////////////////////////////////////////////////////////////////
     //     Draw a shaded view of the ITS SPD test beam version 1.
     // Inputs:
@@ -680,19 +874,14 @@ void AliITSvSPD02::StepManager(){
     static Int_t stat0=0;
     if((id=gMC->CurrentVolID(copy) == fIDMother)&&
        (gMC->IsTrackEntering()||gMC->IsTrackExiting())){
-       gMC->TrackPosition(position); // Get Position
-       gMC->TrackMomentum(momentum); // Get Momentum
-       copy = fTrackReferences->GetEntriesFast();
-       TClonesArray &lTR = *fTrackReferences;
-       // Fill TrackReference structure with this new TrackReference.
-       AliTrackReference *tr = new(lTR[copy]) AliTrackReference();
-       tr->SetTrack(gAlice->CurrentTrack());
-       tr->SetPosition(position.X(),position.Y(),position.Z());
-       tr->SetMomentum(momentum.Px(),momentum.Py(),momentum.Pz());
-       tr->SetLength(gMC->TrackLength());
+        copy = fTrackReferences->GetEntriesFast();
+        TClonesArray &lTR = *fTrackReferences;
+        // Fill TrackReference structure with this new TrackReference.
+        new(lTR[copy]) AliTrackReference(gAlice->GetMCApp()->
+                                         GetCurrentTrackNumber());
     } // if Outer ITS mother Volume
     if(!(this->IsActive())){
-       return;
+        return;
     } // end if !Active volume.
     Int_t   vol[5];
     TClonesArray &lhits = *fHits;
@@ -711,30 +900,33 @@ void AliITSvSPD02::StepManager(){
     // Fill hit structure.
     if(!(gMC->TrackCharge())) return;
     id = gMC->CurrentVolID(copy);
-    if(id==fIdSens[0]){
-       vol[0] = vol[1] = 1; // Layer, ladder
-       id = gMC->CurrentVolOffID(2,copy);
-       //detector copy in the ladder = 1<->4  (ITS1 < I101 < I103 < I10A)
-       vol[2] = copy; // detector
-    } else if(id == fIdSens[1]){
-       vol[0] = 1; // layer
-       vol[1] = 2; // ladder
-       id = gMC->CurrentVolOffID(2,copy);
-       //detector copy in the ladder = 1<->4  (ITS2 < I1D1 < I1D3 < I20A)
-       vol[2] = copy;  // detector
+    if(id==fIdSens[0]){  // Volume name "IMBS"
+        vol[2] = vol[1] = 1; // Det, ladder
+        id = gMC->CurrentVolOffID(2,copy);
+        //detector copy in the ladder = 1<->4  (ITS1 < I101 < I103 < I10A)
+        vol[0] = copy; // Lay
+        if(copy>2) vol[0]++;
+    } else if(id == fIdSens[1]){ // Volume name "ITST"
+        vol[0] = 3; // layer
+        vol[1] = 1; // ladder
+        id = gMC->CurrentVolOffID(2,copy);
+        //detector copy in the ladder = 1<->4  (ITS2 < I1D1 < I1D3 < I20A)
+        vol[2] = 1;  // detector
     } else return; // end if
     //
     gMC->TrackPosition(position);
     gMC->TrackMomentum(momentum);
     vol[4] = stat0;
     if(gMC->IsTrackEntering()){
-       position0 = position;
-       stat0 = vol[3];
+        position0 = position;
+        stat0 = vol[3];
+        return;
     } // end if IsEntering
     // Fill hit structure with this new hit only for non-entrerance hits.
-    else new(lhits[fNhits++]) AliITShit(fIshunt,gAlice->CurrentTrack(),vol,
-                                       gMC->Edep(),gMC->TrackTime(),position,
-                                       position0,momentum);
+    else new(lhits[fNhits++]) AliITShit(fIshunt,
+                                  gAlice->GetMCApp()->GetCurrentTrackNumber(),
+                                        vol,gMC->Edep(),gMC->TrackTime(),
+                                        position,position0,momentum);
     //
     position0 = position;
     stat0 = vol[3];