]> git.uio.no Git - u/mrichter/AliRoot.git/blobdiff - ITS/AliITSvSPD02.cxx
28-mar-2007 NvE Explicitly included TMath.h in IceChi2.h and IcePandel.h due to a
[u/mrichter/AliRoot.git] / ITS / AliITSvSPD02.cxx
index 98cd20d515d52c616537e4c9c24771048bcc74c7..7945dd5c43c7237825ff6ddce72f0ef2c7719a66 100644 (file)
 
 /* $Id$ */
 
-#include <Riostream.h>
-#include <TMath.h>
 #include <TGeometry.h>
 #include <TNode.h>
 #include <TLorentzVector.h>
 #include <TClonesArray.h>
 #include <TBRIK.h>
+#include <TGeoMatrix.h>
+#include <TVirtualMC.h>
 
 #include "AliRun.h"
 #include "AliMagF.h"
-#include "AliITSGeant3Geometry.h"
 #include "AliTrackReference.h"
+
 #include "AliITShit.h"
 #include "AliITS.h"
 #include "AliITSvSPD02.h"
 #include "AliITSgeom.h"
 #include "AliITSgeomSPD.h"
-#include "AliITSgeomSSD.h"
-#include "AliITSDetType.h"
-#include "AliITSresponseSPDdubna.h"
-#include "AliITSresponseSDD.h"
-#include "AliITSresponseSSD.h"
+#include "AliITSDetTypeSim.h"
+#include "AliITSCalibrationSPD.h"
 #include "AliITSsegmentationSPD.h"
-#include "AliITSsegmentationSDD.h"
-#include "AliITSsegmentationSSD.h"
-#include "AliITSsimulationSPDdubna.h"
-#include "AliITSsimulationSDD.h"
-#include "AliITSsimulationSSD.h"
+#include "AliITSsimulationSPD.h"
 #include "AliMC.h"
 
+
 ///////////////////////////////////////////////////////////////////////
 // Step manager and 
 // geometry class
 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:
@@ -68,24 +75,29 @@ 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:
@@ -93,17 +105,13 @@ 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();
@@ -115,41 +123,31 @@ AliITSvSPD02::AliITSvSPD02(const char *title) : AliITS("ITS", title){
     strncpy(fWrite,fEuclidGeomDet,60);
 }
 //______________________________________________________________________
-AliITSvSPD02::AliITSvSPD02(const AliITSvSPD02 &source) : AliITS(source){
+AliITSvSPD02::~AliITSvSPD02() {
     ////////////////////////////////////////////////////////////////////////
-    //     Copy Constructor for ITS SPD test beam 2002 version 1.
-    // This class is not to be copied. Function only dummy.
+    //    Standard destructor for the ITS SPD test beam 2002 version 1.
     // Inputs:
-    //    const AliITSvSPD02 &source   The class to be copied
-    // Outputs:
     //    none.
-    // Return:
-    //    A warning message.
-    ////////////////////////////////////////////////////////////////////////
-    if(&source == this) return;
-    Warning("Copy Constructor","Not allowed to copy AliITSvSPD02");
-    return;
-}
-//______________________________________________________________________
-AliITSvSPD02& AliITSvSPD02::operator=(const AliITSvSPD02 &source){
-    ////////////////////////////////////////////////////////////////////////
-    //    Assignment operator for the ITS SPD test beam 2002 version 1.
-    // This class is not to be copied. Function only dummy.
-    // Inputs:
-    //    const AliITSvSPD02 &source   The class to be copied
     // Outputs:
     //    none.
     // Return:
-    //    A Warning message
+    //    none.
     ////////////////////////////////////////////////////////////////////////
-    if(&source == this) return *this;
-    Warning("= operator","Not allowed to copy AliITSvSPD02");
-    return *this;
 }
 //______________________________________________________________________
-AliITSvSPD02::~AliITSvSPD02() {
+void AliITSvSPD02::BuildGeometry(){
     ////////////////////////////////////////////////////////////////////////
-    //    Standard destructor for the ITS SPD test beam 2002 version 1.
+    //    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:
@@ -157,9 +155,19 @@ AliITSvSPD02::~AliITSvSPD02() {
     // Return:
     //    none.
     ////////////////////////////////////////////////////////////////////////
+    // Get the top alice volume.
+
+    switch (fGeomNumber){
+    case 2002:
+        BuildGeometry2002();
+        break;
+    default:
+        BuildGeometry2002();
+        break;
+    } // end switch
 }
 //______________________________________________________________________
-void AliITSvSPD02::BuildGeometry(){
+void AliITSvSPD02::BuildGeometry2002(){
     ////////////////////////////////////////////////////////////////////////
     //    Geometry builder for the ITS SPD test beam 2002 version 1.
     //    ALIC    ALICE Mother Volume
@@ -189,14 +197,15 @@ 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 *iITSVshape = new TBRIK("ITSVshape","ITS Logical Mother Volume","Air",
-                                data[0],data[1],data[2]);
+    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);
+                             0.0,0.0,0.0,0,0);
     iITSV->cd(); // set ourselve into ITSV subvolume of aALIC
 
     // SPD part of telescope (MiniBuS)
@@ -261,36 +270,36 @@ void AliITSvSPD02::BuildGeometry(){
                            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;
-       iIPC0[i] = new TNode(name,title,iIPC0shape,
-                           0.0,spdchipY-iIDETshape->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
     iITS0->cd();
     TNode *iITST = new TNode("ITST","SPD sensitive volume",iITSTshape,
-                           0.0,0.0,0.0,0,0);
+                             0.0,0.0,0.0,0,0);
     for(Int_t i=0;i<4;i++){
-       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.
+        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
     aALIC->cd();
     iITST->SetLineColor(kYellow);
     fNodes->Add(iITST);
     for(i=0;i<4;i++){
-       iIMBS[i]->SetLineColor(kGreen);
-       fNodes->Add(iIMBS[i]);
+        iIMBS[i]->SetLineColor(kGreen);
+        fNodes->Add(iIMBS[i]);
     } // end for i
 }
 //______________________________________________________________________
@@ -314,6 +323,37 @@ 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
@@ -322,6 +362,7 @@ 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);
@@ -414,7 +455,38 @@ void AliITSvSPD02::CreateMaterials(){
     // 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
+    // the CreateMaterials 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.
+    /////////////////////////////////////////////////////////////////////////
+
+    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 CreateMaterials 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.
@@ -441,14 +513,38 @@ 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);
+}
+//______________________________________________________________________
+Int_t AliITSvSPD02::DecodeDetector(Int_t id,Int_t cpy,Int_t &lay,Int_t &lad,
+    Int_t &det)const{
+    //     Based on the geometry tree defined in Geant 3.21, this
+    // routine initilizes the Class AliITSgeom from the Geant 3.21 ITS geometry
+    // sturture.
+    // Inputs:
+    //    Int_t id   Detector volume id
+    //    Int_t cpy  Detector copy number
+    // Outputs:
+    //    Int_t lay  layer number
+    //    Int_t lad  ladder number
+    //    Int_t det  detector number
+    // Return:
+    //    The module number
+    Int_t mod;
+
+    lad = det = 1;
+    lay = cpy;
+    if(cpy>2 && id==fIdSens[0]) lay = cpy + 1;
+    if(id==fIdSens[1]) lay = 3;
+    mod = lay - 1;
+    return mod;
 }
 //______________________________________________________________________
 void AliITSvSPD02::InitAliITSgeom(){
@@ -461,65 +557,39 @@ 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 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,typ,lay,lad,det,cpy,i,j,k;
-    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<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]=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
+    const Int_t kltypess=2;
+    const Int_t knlayers=5;
+    const TString knames[kltypess]=
+        {"ALIC_1/ITSV_1/ITEL_%d/IMB0_1/IMBS_1",//lay=1,2,4,5
+         "ALIC_1/ITSV_1/IDET_%d/ITS0_1/ITST_1"};// lay=3
+    const Int_t kitsGeomTreeCopys[2]={4,1};
+    const Int_t knlad[knlayers]={knlayers*1},kndet[knlayers]={knlayers*1};
+    TString path,shapeName;
+    TGeoHMatrix matrix;
+    TArrayD shapePar;
+    TArrayF shapeParF;
+    Double_t trans[3]={3*0.0},rot[10]={10*0.0};
+    Int_t npar=3,mod,i,j,lay,lad,det,cpy;
+    Float_t par[20];
+
+    par[0]=0.64;par[1]=0.5*300.0E-4;par[2]=3.48;
+    mod=5;
+    AliITSgeom* geom = new AliITSgeom(0,knlayers,knlad,kndet,mod);
+    SetITSgeom(geom);
+    for(i=0;i<kltypess;i++)for(cpy=1;cpy<=kitsGeomTreeCopys[i];cpy++){
+        path.Form(knames[i].Data(),cpy);
+        gMC->GetTransformation(path.Data(),matrix);
+        gMC->GetShape(path.Data(),shapeName,shapePar);
+        shapeParF.Set(shapePar.GetSize());
+        for(j=0;j<shapePar.GetSize();j++) shapeParF[j]=shapePar[j];
+        mod = DecodeDetector(fIdSens[i],cpy,lay,lad,det);
+        geom->CreateMatrix(mod,lay,lad,det,kSPD,trans,rot);
+        geom->SetTrans(mod,matrix.GetTranslation());
+        geom->SetRotMatrix(mod,matrix.GetRotationMatrix());
+        geom->GetGeomMatrix(mod)->SetPath(path.Data());
+        if(!(geom->IsShapeDefined((Int_t)kSPD)))
+            geom->ReSetShape(kSPD,new AliITSgeomSPD425Short(npar,par));
+    } // end for i,cpy/
     return;
 }
 //______________________________________________________________________
@@ -539,19 +609,21 @@ 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;
-    fITSgeom = new AliITSgeom();
-    if(fGeomDetIn) fITSgeom->ReadNewFile(fRead);
+    if(GetITSgeom()!=0) SetITSgeom(0x0);
+    AliITSgeom* geom = new AliITSgeom();
+    SetITSgeom(geom);
+    if(fGeomDetIn) GetITSgeom()->ReadNewFile(fRead);
     if(!fGeomDetIn) this->InitAliITSgeom();
-    if(fGeomDetOut) fITSgeom->WriteNewFile(fWrite);
+    if(fGeomDetOut) GetITSgeom()->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(){
@@ -566,20 +638,23 @@ void AliITSvSPD02::SetDefaults(){
 
     Info("SetDefaults","Setting up only SPD detector");
 
-    AliITSDetType *iDetType;
+    if(!fDetTypeSim) fDetTypeSim = new AliITSDetTypeSim();
+    fDetTypeSim->SetITSgeom(GetITSgeom());
     AliITSgeomSPD  *s0;
     Int_t i;
     Float_t bx[256],bz[280];
-
+    fDetTypeSim->ResetCalibrationArray();
+    fDetTypeSim->ResetSegmentation();
     //SPD
-    iDetType=DetType(kSPD);
     // Get shape info. Do it this way for now.
-    s0 = (AliITSgeomSPD*) fITSgeom->GetShape(kSPD);
-    AliITSresponse *resp0=new AliITSresponseSPDdubna();
+    s0 = (AliITSgeomSPD*) GetITSgeom()->GetShape(kSPD);
+    AliITSCalibration *resp0=new AliITSCalibrationSPD();
     resp0->SetTemperature();
     resp0->SetDistanceOverVoltage();
-    SetResponseModel(kSPD,resp0);
-    AliITSsegmentationSPD *seg0=new AliITSsegmentationSPD(fITSgeom);
+    SetCalibrationModel(0,resp0); 
+       
+    AliITSsegmentationSPD *seg0=new AliITSsegmentationSPD();
     seg0->SetDetSize(s0->GetDx()*2.*kconv, // base this on AliITSgeomSPD
                     s0->GetDz()*2.*kconv, // for now.
                     s0->GetDy()*2.*kconv); // x,z,y full width in microns.
@@ -595,22 +670,22 @@ void AliITSvSPD02::SetDefaults(){
     seg0->SetBinSize(bx,bz); // Based on AliITSgeomSPD for now.
     SetSegmentationModel(kSPD,seg0);
     // set digit and raw cluster classes to be used
-    const char *kData0=(iDetType->GetResponseModel())->DataType();
-    if (strstr(kData0,"real")) iDetType->ClassNames("AliITSdigit",
-                                                   "AliITSRawClusterSPD");
-    else iDetType->ClassNames("AliITSdigitSPD","AliITSRawClusterSPD");
-//    SetSimulationModel(kSPD,new AliITSsimulationSPD(seg0,resp0));
+    const char *kData0=(fDetTypeSim->GetCalibrationModel(0))->DataType();
+    if (strstr(kData0,"real")) fDetTypeSim->SetDigitClassName(kSPD,"AliITSdigit");
+    else fDetTypeSim->SetDigitClassName(kSPD,"AliITSdigitSPD");
+//    SetSimulationModel(kSPD,new AliITSsimulationSPDdubna(seg0,resp0));
 //    iDetType->ReconstructionModel(new AliITSClusterFinderSPD());
-
-    SetResponseModel(kSDD,new AliITSresponseSDD());
+   
+/*
+    SetResponseModel(kSDD,new AliITSCalibrationSDD());
     SetSegmentationModel(kSDD,new AliITSsegmentationSDD());
     DetType(kSDD)->ClassNames("AliITSdigitSDD","AliITSRawClusterSDD");
 
-    SetResponseModel(kSSD,new AliITSresponseSSD());
+    SetResponseModel(kSSD,new AliITSCalibrationSSD());
     SetSegmentationModel(kSSD,new AliITSsegmentationSSD());
     DetType(kSSD)->ClassNames("AliITSdigitSSD","AliITSRawClusterSSD");
-
-    if(kNTYPES>3){
+*/
+    if(fgkNTYPES>3){
        Warning("SetDefaults",
                "Only the four basic detector types are initialised!");
     }// end if
@@ -626,59 +701,57 @@ void AliITSvSPD02::SetDefaultSimulation(){
     // Return:
     //      none.
 
-    AliITSDetType *iDetType;
-    AliITSsimulation *sim;
-    iDetType=DetType(0);
-    sim = iDetType->GetSimulationModel();
-    if (!sim) {
-        AliITSsegmentation *seg0=
-            (AliITSsegmentation*)iDetType->GetSegmentationModel();
-        AliITSresponse *res0 = (AliITSresponse*)iDetType->GetResponseModel();
-        AliITSsimulationSPDdubna *sim0=new AliITSsimulationSPDdubna(seg0,res0);
-        SetSimulationModel(0,sim0);
-    }else{ // simulation exists, make sure it is set up properly.
-        ((AliITSsimulationSPDdubna*)sim)->Init(
-            (AliITSsegmentationSPD*) iDetType->GetSegmentationModel(),
-            (AliITSresponseSPDdubna*) iDetType->GetResponseModel());
-//        if(sim->GetResponseModel()==0) sim->SetResponseModel(
-//            (AliITSresponse*)iDetType->GetResponseModel());
-//        if(sim->GetSegmentationModel()==0) sim->SetSegmentationModel(
-//            (AliITSsegmentation*)iDetType->GetSegmentationModel());
-    } // end if
-    iDetType=DetType(1);
-    sim = iDetType->GetSimulationModel();
-    if (!sim) {
-        AliITSsegmentation *seg1=
-            (AliITSsegmentation*)iDetType->GetSegmentationModel();
-        AliITSresponse *res1 = (AliITSresponse*)iDetType->GetResponseModel();
-        AliITSsimulationSDD *sim1=new AliITSsimulationSDD(seg1,res1);
-        SetSimulationModel(1,sim1);
-    }else{ // simulation exists, make sure it is set up properly.
-        ((AliITSsimulationSDD*)sim)->Init(
-            (AliITSsegmentationSDD*) iDetType->GetSegmentationModel(),
-            (AliITSresponseSDD*) iDetType->GetResponseModel());
-//        if(sim->GetResponseModel()==0) sim->SetResponseModel(
-//            (AliITSresponse*)iDetType->GetResponseModel());
-//        if(sim->GetSegmentationModel()==0) sim->SetSegmentationModel(
-//            (AliITSsegmentation*)iDetType->GetSegmentationModel());
-    } //end if
-    iDetType=DetType(2);
-    sim = iDetType->GetSimulationModel();
+  if(GetITSgeom()==0){
+    Warning("SetDefaultSimulation","ITS geometry is null!");
+    return;
+  }
+
+  if(!fDetTypeSim) fDetTypeSim = new AliITSDetTypeSim();
+  AliITSsimulation *sim;
+  //AliITSsegmentation *seg;
+  //AliITSCalibration *res;
+  if(fDetTypeSim){
+    sim = fDetTypeSim->GetSimulationModel(kSPD);
     if (!sim) {
-        AliITSsegmentation *seg2=
-            (AliITSsegmentation*)iDetType->GetSegmentationModel();
-        AliITSresponse *res2 = (AliITSresponse*)iDetType->GetResponseModel();
-        AliITSsimulationSSD *sim2=new AliITSsimulationSSD(seg2,res2);
-        SetSimulationModel(2,sim2);
+      //seg = (AliITSsegmentation*)fDetTypeSim->GetSegmentationModel(kSPD);
+      //res = (AliITSCalibration*)fDetTypeSim->GetResponseModel(GetITSgeom()->GetStartSPD());
+      sim = new AliITSsimulationSPD(fDetTypeSim);
+      SetSimulationModel(kSPD,sim);
     }else{ // simulation exists, make sure it is set up properly.
-        ((AliITSsimulationSSD*)sim)->Init(
-            (AliITSsegmentationSSD*) iDetType->GetSegmentationModel(),
-            (AliITSresponseSSD*) iDetType->GetResponseModel());
-//        if(sim->GetResponseModel()==0) sim->SetResponseModel(
-//            (AliITSresponse*)iDetType->GetResponseModel());
-//        if(sim->GetSegmentationModel()==0) sim->SetSegmentationModel(
-//            (AliITSsegmentation*)iDetType->GetSegmentationModel());
+      sim->SetCalibrationModel(GetITSgeom()->GetStartSPD(),(AliITSCalibration*)fDetTypeSim->GetCalibrationModel(GetITSgeom()->GetStartSPD()));
+      sim->SetSegmentationModel(kSPD,(AliITSsegmentation*)fDetTypeSim->GetSegmentationModel(kSPD));
+      sim->Init();
     } // end if
+  } // end if iDetType
+  
+    /*
+      if(fDetTypeSim){
+        sim = fDetTypeSim->GetSimulationModel(kSDD);
+        if (!sim) {
+            seg = (AliITSsegmentation*)fDetTypeSim->GetSegmentationModel(kSDD);
+            res = (AliITSCalibration*)fDetTypeSim->GetResponseModel(GetITSgeom()->GetStartSDD());
+            sim = new AliITSsimulationSDD(seg,res);
+            SetSimulationModel(kSDD,sim);
+        }else{ // simulation exists, make sure it is set up properly.
+         sim->SetResponseModel((AliITSCalibration*)fDetTypeSim->GetResponseModel(GetITSgeom()->GetStartSDD()));
+         sim->SetSegmentationModel((AliITSsegmentation*)fDetTypeSim->GetSegmentationModel(kSDD));
+         sim->Init();
+        } //end if
+    } // end if iDetType
+    if(fDetTypeSim){
+        sim = fDetTypeSim->GetSimulationModel(kSSD);
+        if (!sim) {
+            seg = (AliITSsegmentation*)fDetTypeSim->GetSegmentationModel(kSSD);
+            res = (AliITSCalibration*)fDetTypeSim->GetResponseModel(GetITSgeom()->GetStartSSD());
+            sim = new AliITSsimulationSSD(seg,res);
+            SetSimulationModel(kSSD,sim);
+        }else{ // simulation exists, make sure it is set up properly.
+         sim->SetResponseModel((AliITSCalibration*)fDetTypeSim->GetResponseModel(GetITSgeom()->GetStartSSD()));
+         sim->SetSegmentationModel((AliITSsegmentation*)fDetTypeSim->GetSegmentationModel(kSSD));
+         sim->Init();
+        } // end if
+    } //
+    */ 
 }
 //______________________________________________________________________
 void AliITSvSPD02::DrawModule() const {
@@ -728,19 +801,20 @@ void AliITSvSPD02::StepManager(){
     // Return:
     //    none.
     ////////////////////////////////////////////////////////////////////////
-    Int_t         copy, id;
+    Int_t         copy=0, id;
     TLorentzVector position, momentum;
     static TLorentzVector position0;
     static Int_t stat0=0;
     if((id=gMC->CurrentVolID(copy) == fIDMother)&&
        (gMC->IsTrackEntering()||gMC->IsTrackExiting())){
-       copy = fTrackReferences->GetEntriesFast();
-       TClonesArray &lTR = *fTrackReferences;
-       // Fill TrackReference structure with this new TrackReference.
-       new(lTR[copy]) AliTrackReference(gAlice->GetMCApp()->GetCurrentTrackNumber());
+        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;
@@ -760,31 +834,32 @@ void AliITSvSPD02::StepManager(){
     if(!(gMC->TrackCharge())) return;
     id = gMC->CurrentVolID(copy);
     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]++;
+        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
+        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];
-       return;
+        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->GetMCApp()->GetCurrentTrackNumber(),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];