ITS/AliITSvSPD02.cxx

   1 /**************************************************************************
   2  * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
   3  *                                                                        *
   4  * Author: The ALICE Off-line Project.                                    *
   5  * Contributors are mentioned in the code where appropriate.              *
   6  *                                                                        *
   7  * Permission to use, copy, modify and distribute this software and its   *
   8  * documentation strictly for non-commercial purposes is hereby granted   *
   9  * without fee, provided that the above copyright notice appears in all   *
  10  * copies and that both the copyright notice and this permission notice   *
  11  * appear in the supporting documentation. The authors make no claims     *
  12  * about the suitability of this software for any purpose. It is          *
  13  * provided "as is" without express or implied warranty.                  *
  14  **************************************************************************/
  15
  16 /*
  17 $Log$
  18 */
  19 #include <Riostream.h>
  20 #include <stdio.h>
  21 #include <stdlib.h>
  22 #include <TMath.h>
  23 #include <TGeometry.h>
  24 #include <TNode.h>
  25 #include <TTUBE.h>
  26 #include <TTUBS.h>
  27 #include <TPCON.h>
  28 #include <TFile.h>    // only required for Tracking function?
  29 #include <TCanvas.h>
  30 #include <TObjArray.h>
  31 #include <TLorentzVector.h>
  32 #include <TObjString.h>
  33 #include <TClonesArray.h>
  34 #include <TBRIK.h>
  35 #include <TSystem.h>
  36
  37 #include "AliRun.h"
  38 #include "AliMagF.h"
  39 #include "AliConst.h"
  40 #include "AliITSGeant3Geometry.h"
  41 #include "AliTrackReference.h"
  42 #include "AliITShit.h"
  43 #include "AliITS.h"
  44 #include "AliITSvSPD02.h"
  45 #include "AliITSgeom.h"
  46 #include "AliITSgeomSPD.h"
  47 #include "AliITSgeomSDD.h"
  48 #include "AliITSgeomSSD.h"
  49 #include "AliITSDetType.h"
  50 #include "AliITSresponseSPD.h"
  51 #include "AliITSresponseSDD.h"
  52 #include "AliITSresponseSSD.h"
  53 #include "AliITSsegmentationSPD.h"
  54 #include "AliITSsegmentationSDD.h"
  55 #include "AliITSsegmentationSSD.h"
  56 #include "AliITSsimulationSPD.h"
  57 #include "AliITSsimulationSDD.h"
  58 #include "AliITSsimulationSSD.h"
  59 #include "AliITSClusterFinderSPD.h"
  60 #include "AliITSClusterFinderSDD.h"
  61 #include "AliITSClusterFinderSSD.h"
  62
  63
  64 ClassImp(AliITSvSPD02)
  65
  66 //______________________________________________________________________
  67 AliITSvSPD02::AliITSvSPD02() {
  68     ////////////////////////////////////////////////////////////////////////
  69     // Standard default constructor for the ITS SPD test beam 2002 version 1.
  70     // Inputs:
  71     //    none.
  72     // Outputs:
  73     //    none.
  74     // Return:
  75     //    A default created class.
  76     ////////////////////////////////////////////////////////////////////////
  77     Int_t i;
  78
  79     fIdN          = 0;
  80     fIdName       = 0;
  81     fIdSens       = 0;
  82     fEuclidOut    = kFALSE; // Don't write Euclide file
  83     fGeomDetOut   = kFALSE; // Don't write .det file
  84     fGeomDetIn    = kFALSE; // Don't Read .det file
  85     fMajorVersion = IsVersion();
  86     fMinorVersion = -1;
  87     for(i=0;i<60;i++) fRead[i] = '\0';
  88     for(i=0;i<60;i++) fWrite[i] = '\0';
  89     for(i=0;i<60;i++) fEuclidGeomDet[i] = '\0';
  90 }
  91 //______________________________________________________________________
  92 AliITSvSPD02::AliITSvSPD02(const char *title) : AliITS("ITS", title){
  93     ////////////////////////////////////////////////////////////////////////
  94     //    Standard constructor for the ITS SPD testbeam 2002 version 1.
  95     // Inputs:
  96     //    const char *title    title for this ITS geometry.
  97     // Outputs:
  98     //    none.
  99     // Return:
 100     //    A standard created class.
 101     ////////////////////////////////////////////////////////////////////////
 102     Int_t i;
 103
 104     fIdN = 2;
 105     fIdName = new TString[fIdN];
 106     fIdName[0] = "IMBS";
 107     fIdName[1] = "ITST";
 108     fIdSens    = new Int_t[fIdN];
 109     for(i=0;i<fIdN;i++) fIdSens[i] = 0;
 110     fMajorVersion = IsVersion();
 111     fMinorVersion = 2;
 112     fEuclidOut    = kFALSE; // Don't write Euclide file
 113     fGeomDetOut   = kFALSE; // Don't write .det file
 114     fGeomDetIn    = kFALSE; // Don't Read .det file
 115     SetThicknessDet1();
 116     SetThicknessDet2();
 117     SetThicknessChip1();
 118     SetThicknessChip2();
 119
 120     fEuclidGeometry="$ALICE_ROOT/ITS/ITSgeometry_vSPD022.euc";
 121     strncpy(fEuclidGeomDet,"$ALICE_ROOT/ITS/ITSgeometry_vSPD022.det",60);
 122     strncpy(fRead,fEuclidGeomDet,60);
 123     strncpy(fWrite,fEuclidGeomDet,60);
 124 }
 125 //______________________________________________________________________
 126 AliITSvSPD02::AliITSvSPD02(const AliITSvSPD02 &source){
 127     ////////////////////////////////////////////////////////////////////////
 128     //     Copy Constructor for ITS SPD test beam 2002 version 1.
 129     // This class is not to be copied. Function only dummy.
 130     // Inputs:
 131     //    const AliITSvSPD02 &source   The class to be copied
 132     // Outputs:
 133     //    none.
 134     // Return:
 135     //    A warning message.
 136     ////////////////////////////////////////////////////////////////////////
 137     if(&source == this) return;
 138     Warning("Copy Constructor","Not allowed to copy AliITSvSPD02");
 139     return;
 140 }
 141 //______________________________________________________________________
 142 AliITSvSPD02& AliITSvSPD02::operator=(const AliITSvSPD02 &source){
 143     ////////////////////////////////////////////////////////////////////////
 144     //    Assignment operator for the ITS SPD test beam 2002 version 1.
 145     // This class is not to be copied. Function only dummy.
 146     // Inputs:
 147     //    const AliITSvSPD02 &source   The class to be copied
 148     // Outputs:
 149     //    none.
 150     // Return:
 151     //    A Warning message
 152     ////////////////////////////////////////////////////////////////////////
 153     if(&source == this) return *this;
 154     Warning("= operator","Not allowed to copy AliITSvSPD02");
 155     return *this;
 156 }
 157 //______________________________________________________________________
 158 AliITSvSPD02::~AliITSvSPD02() {
 159     ////////////////////////////////////////////////////////////////////////
 160     //    Standard destructor for the ITS SPD test beam 2002 version 1.
 161     // Inputs:
 162     //    none.
 163     // Outputs:
 164     //    none.
 165     // Return:
 166     //    none.
 167     ////////////////////////////////////////////////////////////////////////
 168 }
 169 //______________________________________________________________________
 170 void AliITSvSPD02::BuildGeometry(){
 171     ////////////////////////////////////////////////////////////////////////
 172     //    Geometry builder for the ITS SPD test beam 2002 version 1.
 173     //    ALIC    ALICE Mother Volume
 174     //     |- ITSV     ITS Mother Volume
 175     //         |- IDET       Detector under Test
 176     //         |   |- ITS0       SPD Si Chip
 177     //         |   |  |- ITST      SPD Sensitivve Volume
 178     //         |   |- IPC0 *5    Readout chip
 179     //         |- ITEL *4    SPD Telescope
 180     //             |- IMB0       SPD Si Chip
 181     //             |   |- IMBS     SPD Sensitive volume
 182     //             |- ICMB       Chip MiniBus.
 183     // Inputs:
 184     //    none.
 185     // Outputs:
 186     //    none.
 187     // Return:
 188     //    none.
 189     ////////////////////////////////////////////////////////////////////////
 190     // Get the top alice volume.
 191     TNode *ALIC = gAlice->GetGeometry()->GetNode("alice");
 192     ALIC->cd();
 193
 194     // Define ITS Mother Volume
 195     Float_t data[3];
 196     Float_t ddettest=200.0E-4,ddettelescope=300.0E-4;
 197     Float_t dchipMiniBus=750.0E-4,dchiptest=300.0E-4;
 198     //Float_t yposition= 0.0;
 199     TRotMatrix *r0 = new TRotMatrix("ITSidrotm0","ITSidrotm0",
 200                                     90.0,0,0.0,0,90.0,270.0);
 201     data[0] = 10.0;
 202     data[1] = 50.0;
 203     data[2] = 100.0;
 204     TBRIK *ITSVshape = new TBRIK("ITSVshape","ITS Logical Mother Volume","Air",
 205                                  data[0],data[1],data[2]);
 206     TNode *ITSV = new TNode("ITSV","ITS Mother Volume",ITSVshape,
 207                             0.0,0.0,0.0,0,0);
 208     ITSV->cd(); // set ourselve into ITSV subvolume of ALIC
 209
 210     // SPD part of telescope (MiniBuS)
 211     data[0] = 0.705;
 212     data[1] = 0.5*ddettelescope;
 213     data[2] = 3.536;
 214     TBRIK *IMB0shape = new TBRIK("IMB0shape","SPD wafer","Si",
 215                                  data[0],data[1],data[2]);
 216     Float_t detMiniBusX,detMiniBusY,detMiniBusZ;
 217     data[0] = detMiniBusX = 0.64;
 218     data[1] = detMiniBusY = 0.5*ddettelescope;
 219     data[2] = detMiniBusZ = 3.48;
 220     TBRIK *IMBSshape = new TBRIK("IMBSshape","SPD Sensitive volume","Si",
 221                                  data[0],data[1],data[2]);
 222     Float_t chipMiniBusX,chipMiniBusY,chipMiniBusZ;
 223     data[0] = chipMiniBusX = 0.793;
 224     data[1] = chipMiniBusY = 0.5*dchipMiniBus;
 225     data[2] = chipMiniBusZ = 0.68;
 226     TBRIK *ICMBshape = new TBRIK("ICMBshape","chip Minibus","Si",
 227                                  data[0],data[1],data[2]);
 228     data[0] = TMath::Max(detMiniBusX,chipMiniBusX);
 229     data[1] = detMiniBusY+chipMiniBusY;
 230     data[2] = TMath::Max(detMiniBusZ,chipMiniBusZ);
 231     TBRIK *ITELshape = new TBRIK("ITELshape","ITELshape","Air",
 232                                  data[0],data[1],data[2]);
 233
 234     // SPD under test
 235     Float_t spdX,spdY,spdZ,spdchipX,spdchipY,spdchipZ;
 236     data[0] = 0.705;
 237     data[1] = ddettest;
 238     data[2] = 3.536;
 239     TBRIK *ITS0shape = new TBRIK("ITS0shape","SPD wafer","Si",
 240                                  data[0],data[1],data[2]); // contains detector
 241     data[0] = spdX = 0.64;
 242     data[1] = spdY = ddettest;
 243     data[2] = spdZ = 3.48;
 244     TBRIK *ITSTshape = new TBRIK("ITSTshape","SPD sensitive volume","Si",
 245                                  data[0],data[1],data[2]);
 246     // ITS0 with no translation and unit rotation matrix.
 247     data[0] = spdchipX = 0.793;
 248     data[1] = spdchipY = dchiptest;
 249     data[2] = spdchipZ = 0.68;
 250     TBRIK *IPC0shape = new TBRIK("IPC0shape","Readout Chips","Si",
 251                                  data[0],data[1],data[2]); // chip under test
 252     data[0] = TMath::Max(spdchipX,spdX);
 253     data[1] = spdY+spdchipY;
 254     data[2] = TMath::Max(spdchipZ,spdZ);
 255     TBRIK *IDETshape = new TBRIK("IDETshape","Detector Under Test","Air",
 256                                  data[0],data[1],data[2]);
 257     // Place volumes in geometry
 258     Int_t i,j;
 259     char name[20],title[50];
 260     Double_t px=0.0,py=0.0,pz[4]={-38.0,0.0,0.0,0.0};
 261     pz[1] = pz[0]+2.0;
 262     pz[2] = pz[1]+38.0+spdY+spdchipY+34.5;
 263     pz[3] = pz[2]+2.0;
 264     TNode *ITEL[4],*ICMB[4],*IMB0[4],*IMBS[4];
 265     TNode *IDET = new TNode("IDET","Detector Under Test",IDETshape,
 266                             0.0,0.0,pz[1]+38.0,r0,0);
 267     IDET->cd();
 268     TNode *ITS0 = new TNode("ITS0","SPD Chip",ITS0shape,
 269                             0.0,IDETshape->GetDy()-spdY,0.0,0,0);
 270     TNode *IPC0[5];
 271     for(i=0;i<5;i++) { //place readout chips on the back of SPD chip under test
 272         sprintf(name,"IPC0%d",i);
 273         sprintf(title,"Readout chip #%d",i+1);
 274         j = i-2;
 275         IPC0[i] = new TNode(name,title,IPC0shape,
 276                             0.0,spdchipY-IDETshape->GetDy(),
 277                             j*2.0*spdchipZ+j*0.25*(spdZ-5.*spdchipZ),0,0);
 278     } // end for i
 279     ITS0->cd();
 280     TNode *ITST = new TNode("ITST","SPD sensitive volume",ITSTshape,
 281                             0.0,0.0,0.0,0,0);
 282     for(Int_t i=0;i<4;i++){
 283         ITSV->cd();
 284         sprintf(name,"ITEL%d",i);
 285         sprintf(title,"Test beam telescope element #%d",i+1);
 286         ITEL[i] = new TNode(name,title,ITELshape,px,py,pz[i],r0,0);
 287         ITEL[i]->cd();
 288         ICMB[i] = new TNode("ICMB","Chip MiniBus",ICMBshape,
 289                             0.0,-ITELshape->GetDy()+detMiniBusY,0.0,0,0);
 290         IMB0[i] = new TNode("IMB0","Chip MiniBus",IMB0shape,
 291                             0.0, ITELshape->GetDy()-detMiniBusY,0.0,0,0);
 292         IMB0[i]->cd();
 293         IMBS[i] = new TNode("IMBS","IMBS",IMBSshape,0.0,0.0,0.0,0,0);
 294         // place IMBS inside IMB0 with no translation and unit rotation matrix.
 295     } // end for i
 296     ALIC->cd();
 297     ITST->SetLineColor(kYellow);
 298     fNodes->Add(ITST);
 299     for(i=0;i<4;i++){
 300         IMBS[i]->SetLineColor(kGreen);
 301         fNodes->Add(IMBS[i]);
 302     } // end for i
 303 }
 304 //______________________________________________________________________
 305 void AliITSvSPD02::CreateGeometry(){
 306     ////////////////////////////////////////////////////////////////////////
 307     //  This routine defines and Creates the geometry for version 1 of the ITS.
 308     //    ALIC    ALICE Mother Volume
 309     //     |- ITSV     ITS Mother Volume
 310     //         |- IDET       Detector under Test
 311     //         |   |- ITS0       SPD Si Chip
 312     //         |   |  |- ITST      SPD Sensitivve Volume
 313     //         |   |- IPC0 *5    Readout chip
 314     //         |- ITEL *4    SPD Telescope
 315     //             |- IMB0       SPD Si Chip
 316     //             |   |- IMBS     SPD Sensitive volume
 317     //             |- ICMB       Chip MiniBus.
 318     // Inputs:
 319     //    none.
 320     // Outputs:
 321     //    none.
 322     // Return:
 323     //    none.
 324     ////////////////////////////////////////////////////////////////////////
 325     Float_t data[49];
 326     // Define media off-set
 327     Int_t *idtmed = fIdtmed->GetArray()+1; // array of media indexes
 328     Int_t idrotm[4]; // Array of rotation matrix indexes
 329     Float_t ddettest=200.0E-4,ddettelescope=300.0E-4;
 330     Float_t dchipMiniBus=750.0E-4,dchiptest=300.0E-4;
 331     Float_t yposition= 0.0;
 332
 333     // Define Rotation-reflextion Matrixes needed
 334     // 0 is the unit matrix
 335     AliMatrix(idrotm[0], 90.0,0.0, 0.0,0.0, 90.0,270.0);
 336     data[0] = 10.0;
 337     data[1] = 50.0;
 338     data[2] = 100.0;
 339     gMC->Gsvolu("ITSV","BOX",idtmed[0],data,3);
 340     gMC->Gspos("ITSV",1,"ALIC",0.0,0.0,0.0,0,"ONLY");
 341
 342     //cout << "idtmed[0]=" << idtmed[0]<<endl;
 343     //cout << "idtmed[1]=" << idtmed[1]<<endl;
 344     Float_t detMiniBusX,detMiniBusY,detMiniBusZ;
 345     // SPD part of telescope (MiniBuS)
 346     data[0] = detMiniBusX = 0.705;
 347     data[1] = detMiniBusY = 0.5*ddettelescope;
 348     data[2] = detMiniBusZ = 3.536;
 349     gMC->Gsvolu("IMB0", "BOX ", idtmed[1], data, 3);   // contains detector
 350     data[0] = 0.64;
 351     data[1] = 0.5*ddettelescope;
 352     data[2] = 3.48;
 353     gMC->Gsvolu("IMBS","BOX ",idtmed[1],data,3); // sensitive detecor volulme
 354     gMC->Gspos("IMBS",1,"IMB0",0.0,0.0,0.0,0,"ONLY"); // place IMBS inside
 355     // IMB0 with no translation and unit rotation matrix.
 356     Float_t chipMiniBusX,chipMiniBusY,chipMiniBusZ;
 357     data[0] = chipMiniBusX = 0.793;
 358     data[1] = chipMiniBusY = 0.5*dchipMiniBus;
 359     data[2] = chipMiniBusZ = 0.68;
 360     gMC->Gsvolu("ICMB","BOX ",idtmed[1],data, 3);   // chip Minibus
 361     data[0] = TMath::Max(detMiniBusX,chipMiniBusX);
 362     data[1] = detMiniBusY+chipMiniBusY;
 363     data[2] = TMath::Max(detMiniBusZ,chipMiniBusZ);
 364     gMC->Gsvolu("ITEL","BOX ",idtmed[0],data,3);
 365     gMC->Gspos("IMB0",1,"ITEL",0.0,data[1]-detMiniBusY,0.0,0,"ONLY");
 366     gMC->Gspos("ICMB",1,"ITEL",0.0,-data[1]+chipMiniBusY,0.0,0,"ONLY");
 367
 368     // SPD under test
 369     Float_t spdX,spdY,spdZ,spdchipX,spdchipY,spdchipZ;
 370     data[0] = spdX = 0.705;
 371     data[1] = spdY = 0.5*ddettest;
 372     data[2] = spdZ = 3.536;
 373     gMC->Gsvolu("ITS0", "BOX ", idtmed[1], data, 3);   // contains detector
 374     data[0] = 0.64;
 375     data[1] = 0.5*ddettest;
 376     data[2] = 3.48;
 377     gMC->Gsvolu("ITST","BOX ",idtmed[1],data,3);// sensitive detecor volume
 378     gMC->Gspos("ITST",1,"ITS0",0.0,0.0,0.0,0,"ONLY"); // place ITST inside
 379     // ITS0 with no translation and unit rotation matrix.
 380     data[0] = spdchipX = 0.793;
 381     data[1] = spdchipY = 0.5*dchiptest;
 382     data[2] = spdchipZ = 0.68;
 383     gMC->Gsvolu("IPC0", "BOX ", idtmed[1],data,3);   // chip under test
 384     data[0] = TMath::Max(spdchipX,spdX);
 385     data[1] = spdY+spdchipY;
 386     data[2] = TMath::Max(spdchipZ,spdZ);
 387     gMC->Gsvolu("IDET","BOX ",idtmed[0],data,3);
 388     gMC->Gspos("ITS0",1,"IDET",0.0,data[1]-spdY,0.0,0,"ONLY");
 389     for(Int_t i=-2;i<3;i++) gMC->Gspos("IPC0",i+3,"IDET",0.0,-data[1]+spdchipY,
 390               i*2.*spdchipZ+i*0.25*(spdZ-5.*spdchipZ),0,"ONLY");
 391
 392     // Positions detectors, Beam Axis Z, X to the right, Y up to the sky.
 393     Float_t p00X,p00Y,p00Z,p01X,p01Y,p01Z,p10X,p10Y,p10Z,p11X,p11Y,p11Z;
 394     p00X = 0.0;
 395     p00Y = 0.0;
 396     p00Z = -38.0;
 397     gMC->Gspos("ITEL",1,"ITSV",p00X,p00Y,p00Z,idrotm[0],"ONLY");
 398     p01X = 0.0;
 399     p01Y = 0.0;
 400     p01Z = p00Z+2.0;
 401     gMC->Gspos("ITEL",2,"ITSV",p01X,p01Y,p01Z,idrotm[0],"ONLY");
 402     Float_t pdetX,pdetY,pdetZ;
 403     pdetX = 0.0;
 404     pdetY = 0.0+yposition;
 405     pdetZ = p01Z+38.0;
 406     gMC->Gspos("IDET",1,"ITSV",pdetX,pdetY,pdetZ,idrotm[0],"ONLY");
 407     p10X = 0.0;
 408     p10Y = 0.0;
 409     p10Z = pdetZ + 34.5;
 410     gMC->Gspos("ITEL",3,"ITSV",p10X,p10Y,p10Z,idrotm[0],"ONLY");
 411     p11X = 0.0;
 412     p11Y = 0.0;
 413     p11Z = p10Z+2.0;
 414     gMC->Gspos("ITEL",4,"ITSV",p11X,p11Y,p11Z,idrotm[0],"ONLY");
 415 }
 416 //______________________________________________________________________
 417 void AliITSvSPD02::CreateMaterials(){
 418     ////////////////////////////////////////////////////////////////////////
 419     //
 420     // Create ITS SPD test beam materials
 421     //     This function defines the default materials used in the Geant
 422     // Monte Carlo simulations for the geometries AliITSv1, AliITSv3,
 423     // AliITSvSPD02.
 424     // In general it is automatically replaced by
 425     // the CreatMaterials routine defined in AliITSv?. Should the function
 426     // CreateMaterials not exist for the geometry version you are using this
 427     // one is used. See the definition found in AliITSv5 or the other routine
 428     // for a complete definition.
 429     //
 430     // Inputs:
 431     //    none.
 432     // Outputs:
 433     //    none.
 434     // Return:
 435     //    none.
 436     /////////////////////////////////////////////////////////////////////////
 437     Float_t tmaxfdSi = 0.1; // Degree
 438     Float_t stemaxSi = 0.0075; // cm
 439     Float_t deemaxSi = 0.1; // Fraction of particle's energy 0<deemax<=1
 440     Float_t epsilSi  = 1.0E-4;//
 441     Float_t stminSi  = 0.0; // cm "Default value used"
 442
 443     Float_t tmaxfdAir = 0.1; // Degree
 444     Float_t stemaxAir = .10000E+01; // cm
 445     Float_t deemaxAir = 0.1; // Fraction of particle's energy 0<deemax<=1
 446     Float_t epsilAir  = 1.0E-4;//
 447     Float_t stminAir  = 0.0; // cm "Default value used"
 448     Int_t   ifield = gAlice->Field()->Integ();
 449     Float_t fieldm = gAlice->Field()->Max();
 450
 451     AliMaterial(1,"AIR$",0.14610E+02,0.73000E+01,0.12050E-02,
 452                 0.30423E+05,0.99900E+03);
 453     AliMedium(1,"AIR$",1,0,ifield,fieldm,tmaxfdAir,stemaxAir,deemaxAir,
 454               epsilAir,stminAir);
 455
 456     AliMaterial(2,"SI$",0.28086E+02,0.14000E+02,0.23300E+01,
 457                 0.93600E+01,0.99900E+03);
 458     AliMedium(2,"SI$",2,0,ifield,fieldm,tmaxfdSi,stemaxSi,deemaxSi,
 459               epsilSi,stminSi);
 460 }
 461 //______________________________________________________________________
 462 void AliITSvSPD02::InitAliITSgeom(){
 463     //     Based on the geometry tree defined in Geant 3.21, this
 464     // routine initilizes the Class AliITSgeom from the Geant 3.21 ITS geometry
 465     // sturture.
 466     // Inputs:
 467     //    none.
 468     // Outputs:
 469     //    none.
 470     // Return:
 471     //    none.
 472     if(strcmp(gMC->GetName(),"TGeant3")) {
 473         Error("InitAliITSgeom",
 474                 "Wrong Monte Carlo. InitAliITSgeom uses TGeant3 calls");
 475         return;
 476     } // end if
 477     cout << "Reading Geometry transformation directly from Geant 3." << endl;
 478     const Int_t nlayers = 2;
 479     const Int_t ndeep = 5;
 480     Int_t itsGeomTreeNames[nlayers][ndeep],lnam[20],lnum[20];
 481     Int_t nlad[nlayers],ndet[nlayers];
 482     Double_t t[3],r[10];
 483     Float_t  par[20],att[20];
 484     Int_t    npar,natt,idshape,imat,imed;
 485     AliITSGeant3Geometry *ig = new AliITSGeant3Geometry();
 486     Int_t mod,lay,lad,det,i,j,k;
 487     Char_t names[nlayers][ndeep][4];
 488     Int_t itsGeomTreeCopys[nlayers][ndeep];
 489     Char_t *namesA[nlayers][ndeep] = {
 490      {"ALIC","ITSV","ITEL","IMB0","IMBS"}, // lay=1
 491      {"ALIC","ITSV","IDET","ITS0","ITST"}};// Test SPD
 492     Int_t itsGeomTreeCopysA[nlayers][ndeep]= {{1,1,4,1,1},// lay=1
 493                                               {1,1,1,1,1}};//lay=2 TestSPD
 494     for(i=0;i<nlayers;i++)for(j=0;j<ndeep;j++){
 495         for(k=0;k<4;k++) names[i][j][k] = namesA[i][j][k];
 496         itsGeomTreeCopys[i][j] = itsGeomTreeCopysA[i][j];
 497     } // end for i,j
 498     // Sorry, but this is not very pritty code. It should be replaced
 499     // at some point with a version that can search through the geometry
 500     // tree its self.
 501     cout << "Reading Geometry informaton from Geant3 common blocks" << endl;
 502     for(i=0;i<20;i++) lnam[i] = lnum[i] = 0;
 503     for(i=0;i<nlayers;i++)for(j=0;j<ndeep;j++)
 504         itsGeomTreeNames[i][j] = ig->StringToInt(names[i][j]);
 505     mod = 0;
 506     for(i=0;i<nlayers;i++){
 507         k = 1;
 508         for(j=0;j<ndeep;j++) if(itsGeomTreeCopys[i][j]!=0)
 509             k *= TMath::Abs(itsGeomTreeCopys[i][j]);
 510         mod += k;
 511     } // end for i
 512
 513     if(fITSgeom!=0) delete fITSgeom;
 514     nlad[0]=20;nlad[1]=40;nlad[2]=14;nlad[3]=22;nlad[4]=34;nlad[5]=38;
 515     ndet[0]=4;ndet[1]=4;ndet[2]=6;ndet[3]=8;ndet[4]=22;ndet[5]=25;
 516     fITSgeom = new AliITSgeom(0,6,nlad,ndet,mod);
 517     mod = -1;
 518     for(lay=1;lay<=nlayers;lay++){
 519         for(j=0;j<ndeep;j++) lnam[j] = itsGeomTreeNames[lay-1][j];
 520         for(j=0;j<ndeep;j++) lnum[j] = itsGeomTreeCopys[lay-1][j];
 521         switch (lay){
 522         case 1: case 2: // layers 1 and 2 are a bit special
 523             lad = 0;
 524             for(j=1;j<=itsGeomTreeCopys[lay-1][4];j++){
 525                 lnum[4] = j;
 526                 for(k=1;k<=itsGeomTreeCopys[lay-1][5];k++){
 527                     lad++;
 528                     lnum[5] = k;
 529                     for(det=1;det<=itsGeomTreeCopys[lay-1][6];det++){
 530                         lnum[6] = det;
 531                         mod++;
 532                         ig->GetGeometry(ndeep,lnam,lnum,t,r,idshape,npar,natt,
 533                                         par,att,imat,imed);
 534                         fITSgeom->CreatMatrix(mod,lay,lad,det,kSPD,t,r);
 535                         if(!(fITSgeom->IsShapeDefined((Int_t)kSPD)))
 536                              fITSgeom->ReSetShape(kSPD,
 537                                          new AliITSgeomSPD425Short(npar,par));
 538                     } // end for det
 539                 } // end for k
 540             } // end for j
 541             break;
 542         } // end switch
 543     } // end for lay
 544     return;
 545 }
 546 //______________________________________________________________________
 547 void AliITSvSPD02::Init(){
 548     ////////////////////////////////////////////////////////////////////////
 549     //     Initialise the ITS after it has been created.
 550     // Inputs:
 551     //    none.
 552     // Outputs:
 553     //    none.
 554     // Return:
 555     //    none.
 556     ////////////////////////////////////////////////////////////////////////
 557     Int_t i;
 558
 559     cout << endl;
 560     for(i=0;i<26;i++) cout << "*";
 561     cout << " ITSvSPD02" << fMinorVersion << "_Init ";
 562     for(i=0;i<25;i++) cout << "*";cout << endl;
 563 //
 564     if(fRead[0]=='\0') strncpy(fRead,fEuclidGeomDet,60);
 565     if(fWrite[0]=='\0') strncpy(fWrite,fEuclidGeomDet,60);
 566     if(fITSgeom!=0) delete fITSgeom;
 567     fITSgeom = new AliITSgeom();
 568     if(fGeomDetIn) fITSgeom->ReadNewFile(fRead);
 569     if(!fGeomDetIn) this->InitAliITSgeom();
 570     if(fGeomDetOut) fITSgeom->WriteNewFile(fWrite);
 571     AliITS::Init();
 572 //
 573     for(i=0;i<72;i++) cout << "*";
 574     cout << endl;
 575     fIDMother = gMC->VolId("ITSV"); // ITS Mother Volume ID.
 576 }
 577 //______________________________________________________________________
 578 void AliITSvSPD02::SetDefaults(){
 579     // sets the default segmentation, response, digit and raw cluster classes
 580     // Inputs:
 581     //    none.
 582     // Outputs:
 583     //    none.
 584     // Return:
 585     //    none.
 586     const Float_t kconv = 1.0e+04; // convert cm to microns
 587
 588     Info("SetDefaults","Setting up only SPD detector");
 589
 590     AliITSDetType *iDetType;
 591     AliITSgeomSPD  *s0;
 592     Int_t i;
 593     Float_t bx[256],bz[280];
 594
 595     //SPD
 596     iDetType=DetType(kSPD);
 597     s0 = (AliITSgeomSPD*) fITSgeom->GetShape(kSPD);// Get shape info. Do it this way for now.
 598     AliITSresponse *resp0=new AliITSresponseSPD();
 599     SetResponseModel(kSPD,resp0);
 600     AliITSsegmentationSPD *seg0=new AliITSsegmentationSPD(fITSgeom);
 601     seg0->SetDetSize(s0->GetDx()*2.*kconv, // base this on AliITSgeomSPD
 602                      s0->GetDz()*2.*kconv, // for now.
 603                      s0->GetDy()*2.*kconv); // x,z,y full width in microns.
 604     seg0->SetNPads(256,160);// Number of Bins in x and z
 605     for(i=000;i<256;i++) bx[i] =  50.0; // in x all are 50 microns.
 606     for(i=000;i<160;i++) bz[i] = 425.0; // most are 425 microns except below
 607     for(i=160;i<280;i++) bz[i] =   0.0; // Outside of detector.
 608     bz[ 31] = bz[ 32] = 625.0; // first chip boundry
 609     bz[ 63] = bz[ 64] = 625.0; // first chip boundry
 610     bz[ 95] = bz[ 96] = 625.0; // first chip boundry
 611     bz[127] = bz[128] = 625.0; // first chip boundry
 612     bz[160] = 425.0; // Set so that there is no zero pixel size for fNz.
 613     seg0->SetBinSize(bx,bz); // Based on AliITSgeomSPD for now.
 614     SetSegmentationModel(kSPD,seg0);
 615     // set digit and raw cluster classes to be used
 616     const char *kData0=(iDetType->GetResponseModel())->DataType();
 617     if (strstr(kData0,"real")) iDetType->ClassNames("AliITSdigit",
 618                                                     "AliITSRawClusterSPD");
 619     else iDetType->ClassNames("AliITSdigitSPD","AliITSRawClusterSPD");
 620 //    SetSimulationModel(kSPD,new AliITSsimulationSPD(seg0,resp0));
 621 //    iDetType->ReconstructionModel(new AliITSClusterFinderSPD());
 622
 623     if(kNTYPES>3){
 624         Warning("SetDefaults",
 625                 "Only the four basic detector types are initialised!");
 626     }// end if
 627     return;
 628 }
 629 //______________________________________________________________________
 630 void AliITSvSPD02::DrawModule(){
 631     ////////////////////////////////////////////////////////////////////////
 632     //     Draw a shaded view of the ITS SPD test beam version 1.
 633     // Inputs:
 634     //    none.
 635     // Outputs:
 636     //    none.
 637     // Return:
 638     //    none.
 639     ////////////////////////////////////////////////////////////////////////
 640     // Set everything unseen
 641     gMC->Gsatt("*", "seen", -1);
 642     // Set ALIC mother visible
 643     gMC->Gsatt("ALIC","SEEN",0);
 644     // Set ALIC ITS visible
 645     gMC->Gsatt("ITSV","SEEN",0);
 646     // Set ALIC Telescopes visible
 647     gMC->Gsatt("ITEL","SEEN",0);
 648     // Set ALIC detetcor visible
 649     gMC->Gsatt("IDET","SEEN",0);
 650     // Set Detector chip mother visible and drawn
 651     gMC->Gsatt("IPC0","SEEN",1);
 652     // Set Detector mother visible and drawn
 653     gMC->Gsatt("ITS0","SEEN",1);
 654     // Set minibus chip mother visible and drawn
 655     gMC->Gsatt("ICMB","SEEN",1);
 656     // Set minibus mother visible and drawn
 657     gMC->Gsatt("IMB0","SEEN",1);
 658 }
 659 //______________________________________________________________________
 660 void AliITSvSPD02::StepManager(){
 661     ////////////////////////////////////////////////////////////////////////
 662     //    Called for every step in the ITS SPD test beam, then calles the
 663     // AliITShit class  creator with the information to be recoreded about
 664     //  that hit.
 665     //     The value of the macro ALIITSPRINTGEOM if set to 1 will allow the
 666     // printing of information to a file which can be used to create a .det
 667     // file read in by the routine CreateGeometry(). If set to 0 or any other
 668     // value except 1, the default behavior, then no such file is created nor
 669     // it the extra variables and the like used in the printing allocated.
 670     // Inputs:
 671     //    none.
 672     // Outputs:
 673     //    none.
 674     // Return:
 675     //    none.
 676     ////////////////////////////////////////////////////////////////////////
 677     Int_t         copy, id;
 678     TLorentzVector position, momentum;
 679     static TLorentzVector position0;
 680     static Int_t stat0=0;
 681     if((id=gMC->CurrentVolID(copy) == fIDMother)&&
 682        (gMC->IsTrackEntering()||gMC->IsTrackExiting())){
 683         gMC->TrackPosition(position); // Get Position
 684         gMC->TrackMomentum(momentum); // Get Momentum
 685         copy = fTrackReferences->GetEntriesFast();
 686         TClonesArray &lTR = *fTrackReferences;
 687         // Fill TrackReference structure with this new TrackReference.
 688         AliTrackReference *tr = new(lTR[copy]) AliTrackReference();
 689         tr->SetTrack(gAlice->CurrentTrack());
 690         tr->SetPosition(position.X(),position.Y(),position.Z());
 691         tr->SetMomentum(momentum.Px(),momentum.Py(),momentum.Pz());
 692         tr->SetLength(gMC->TrackLength());
 693     } // if Outer ITS mother Volume
 694     if(!(this->IsActive())){
 695         return;
 696     } // end if !Active volume.
 697     Int_t   vol[5];
 698     TClonesArray &lhits = *fHits;
 699     //
 700     // Track status
 701     vol[3] = 0;
 702     vol[4] = 0;
 703     if(gMC->IsTrackInside())      vol[3] +=  1;
 704     if(gMC->IsTrackEntering())    vol[3] +=  2;
 705     if(gMC->IsTrackExiting())     vol[3] +=  4;
 706     if(gMC->IsTrackOut())         vol[3] +=  8;
 707     if(gMC->IsTrackDisappeared()) vol[3] += 16;
 708     if(gMC->IsTrackStop())        vol[3] += 32;
 709     if(gMC->IsTrackAlive())       vol[3] += 64;
 710     //
 711     // Fill hit structure.
 712     if(!(gMC->TrackCharge())) return;
 713     id = gMC->CurrentVolID(copy);
 714     if(id==fIdSens[0]){
 715         vol[0] = vol[1] = 1; // Layer, ladder
 716         id = gMC->CurrentVolOffID(2,copy);
 717         //detector copy in the ladder = 1<->4  (ITS1 < I101 < I103 < I10A)
 718         vol[2] = copy; // detector
 719     } else if(id == fIdSens[1]){
 720         vol[0] = 1; // layer
 721         vol[1] = 2; // ladder
 722         id = gMC->CurrentVolOffID(2,copy);
 723         //detector copy in the ladder = 1<->4  (ITS2 < I1D1 < I1D3 < I20A)
 724         vol[2] = copy;  // detector
 725     } else return; // end if
 726     //
 727     gMC->TrackPosition(position);
 728     gMC->TrackMomentum(momentum);
 729     vol[4] = stat0;
 730     if(gMC->IsTrackEntering()){
 731         position0 = position;
 732         stat0 = vol[3];
 733     } // end if IsEntering
 734     // Fill hit structure with this new hit only for non-entrerance hits.
 735     else new(lhits[fNhits++]) AliITShit(fIshunt,gAlice->CurrentTrack(),vol,
 736                                         gMC->Edep(),gMC->TrackTime(),position,
 737                                         position0,momentum);
 738     //
 739     position0 = position;
 740     stat0 = vol[3];
 741
 742     return;
 743 }
 744