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 Revision 1.2  2003/02/12 10:39:05  hristov
  19 Updated AliTrackReference class (S.Radomski)
  20
  21 Revision 1.1  2002/12/05 20:07:25  nilsen
  22 Adding new SPD 2002 test-beam geometry, with Config file (setup for testing,
  23 50 pions in one event and not 50 events with one pion).
  24
  25 */
  26 #include <Riostream.h>
  27 #include <stdio.h>
  28 #include <stdlib.h>
  29 #include <TMath.h>
  30 #include <TGeometry.h>
  31 #include <TNode.h>
  32 #include <TTUBE.h>
  33 #include <TTUBS.h>
  34 #include <TPCON.h>
  35 #include <TFile.h>    // only required for Tracking function?
  36 #include <TCanvas.h>
  37 #include <TObjArray.h>
  38 #include <TLorentzVector.h>
  39 #include <TObjString.h>
  40 #include <TClonesArray.h>
  41 #include <TBRIK.h>
  42 #include <TSystem.h>
  43
  44 #include "AliRun.h"
  45 #include "AliMagF.h"
  46 #include "AliConst.h"
  47 #include "AliITSGeant3Geometry.h"
  48 #include "AliTrackReference.h"
  49 #include "AliITShit.h"
  50 #include "AliITS.h"
  51 #include "AliITSvSPD02.h"
  52 #include "AliITSgeom.h"
  53 #include "AliITSgeomSPD.h"
  54 #include "AliITSgeomSDD.h"
  55 #include "AliITSgeomSSD.h"
  56 #include "AliITSDetType.h"
  57 #include "AliITSresponseSPD.h"
  58 #include "AliITSresponseSDD.h"
  59 #include "AliITSresponseSSD.h"
  60 #include "AliITSsegmentationSPD.h"
  61 #include "AliITSsegmentationSDD.h"
  62 #include "AliITSsegmentationSSD.h"
  63 #include "AliITSsimulationSPD.h"
  64 #include "AliITSsimulationSDD.h"
  65 #include "AliITSsimulationSSD.h"
  66 #include "AliITSClusterFinderSPD.h"
  67 #include "AliITSClusterFinderSDD.h"
  68 #include "AliITSClusterFinderSSD.h"
  69
  70
  71 ClassImp(AliITSvSPD02)
  72
  73 //______________________________________________________________________
  74 AliITSvSPD02::AliITSvSPD02() {
  75     ////////////////////////////////////////////////////////////////////////
  76     // Standard default constructor for the ITS SPD test beam 2002 version 1.
  77     // Inputs:
  78     //    none.
  79     // Outputs:
  80     //    none.
  81     // Return:
  82     //    A default created class.
  83     ////////////////////////////////////////////////////////////////////////
  84     Int_t i;
  85
  86     fIdN          = 0;
  87     fIdName       = 0;
  88     fIdSens       = 0;
  89     fEuclidOut    = kFALSE; // Don't write Euclide file
  90     fGeomDetOut   = kFALSE; // Don't write .det file
  91     fGeomDetIn    = kFALSE; // Don't Read .det file
  92     fMajorVersion = IsVersion();
  93     fMinorVersion = -1;
  94     for(i=0;i<60;i++) fRead[i] = '\0';
  95     for(i=0;i<60;i++) fWrite[i] = '\0';
  96     for(i=0;i<60;i++) fEuclidGeomDet[i] = '\0';
  97 }
  98 //______________________________________________________________________
  99 AliITSvSPD02::AliITSvSPD02(const char *title) : AliITS("ITS", title){
 100     ////////////////////////////////////////////////////////////////////////
 101     //    Standard constructor for the ITS SPD testbeam 2002 version 1.
 102     // Inputs:
 103     //    const char *title    title for this ITS geometry.
 104     // Outputs:
 105     //    none.
 106     // Return:
 107     //    A standard created class.
 108     ////////////////////////////////////////////////////////////////////////
 109     Int_t i;
 110
 111     fIdN = 2;
 112     fIdName = new TString[fIdN];
 113     fIdName[0] = "IMBS";
 114     fIdName[1] = "ITST";
 115     fIdSens    = new Int_t[fIdN];
 116     for(i=0;i<fIdN;i++) fIdSens[i] = 0;
 117     fMajorVersion = IsVersion();
 118     fMinorVersion = 2;
 119     fEuclidOut    = kFALSE; // Don't write Euclide file
 120     fGeomDetOut   = kFALSE; // Don't write .det file
 121     fGeomDetIn    = kFALSE; // Don't Read .det file
 122     SetThicknessDet1();
 123     SetThicknessDet2();
 124     SetThicknessChip1();
 125     SetThicknessChip2();
 126
 127     fEuclidGeometry="$ALICE_ROOT/ITS/ITSgeometry_vSPD022.euc";
 128     strncpy(fEuclidGeomDet,"$ALICE_ROOT/ITS/ITSgeometry_vSPD022.det",60);
 129     strncpy(fRead,fEuclidGeomDet,60);
 130     strncpy(fWrite,fEuclidGeomDet,60);
 131 }
 132 //______________________________________________________________________
 133 AliITSvSPD02::AliITSvSPD02(const AliITSvSPD02 &source){
 134     ////////////////////////////////////////////////////////////////////////
 135     //     Copy Constructor for ITS SPD test beam 2002 version 1.
 136     // This class is not to be copied. Function only dummy.
 137     // Inputs:
 138     //    const AliITSvSPD02 &source   The class to be copied
 139     // Outputs:
 140     //    none.
 141     // Return:
 142     //    A warning message.
 143     ////////////////////////////////////////////////////////////////////////
 144     if(&source == this) return;
 145     Warning("Copy Constructor","Not allowed to copy AliITSvSPD02");
 146     return;
 147 }
 148 //______________________________________________________________________
 149 AliITSvSPD02& AliITSvSPD02::operator=(const AliITSvSPD02 &source){
 150     ////////////////////////////////////////////////////////////////////////
 151     //    Assignment operator for the ITS SPD test beam 2002 version 1.
 152     // This class is not to be copied. Function only dummy.
 153     // Inputs:
 154     //    const AliITSvSPD02 &source   The class to be copied
 155     // Outputs:
 156     //    none.
 157     // Return:
 158     //    A Warning message
 159     ////////////////////////////////////////////////////////////////////////
 160     if(&source == this) return *this;
 161     Warning("= operator","Not allowed to copy AliITSvSPD02");
 162     return *this;
 163 }
 164 //______________________________________________________________________
 165 AliITSvSPD02::~AliITSvSPD02() {
 166     ////////////////////////////////////////////////////////////////////////
 167     //    Standard destructor for the ITS SPD test beam 2002 version 1.
 168     // Inputs:
 169     //    none.
 170     // Outputs:
 171     //    none.
 172     // Return:
 173     //    none.
 174     ////////////////////////////////////////////////////////////////////////
 175 }
 176 //______________________________________________________________________
 177 void AliITSvSPD02::BuildGeometry(){
 178     ////////////////////////////////////////////////////////////////////////
 179     //    Geometry builder for the ITS SPD test beam 2002 version 1.
 180     //    ALIC    ALICE Mother Volume
 181     //     |- ITSV     ITS Mother Volume
 182     //         |- IDET       Detector under Test
 183     //         |   |- ITS0       SPD Si Chip
 184     //         |   |  |- ITST      SPD Sensitivve Volume
 185     //         |   |- IPC0 *5    Readout chip
 186     //         |- ITEL *4    SPD Telescope
 187     //             |- IMB0       SPD Si Chip
 188     //             |   |- IMBS     SPD Sensitive volume
 189     //             |- ICMB       Chip MiniBus.
 190     // Inputs:
 191     //    none.
 192     // Outputs:
 193     //    none.
 194     // Return:
 195     //    none.
 196     ////////////////////////////////////////////////////////////////////////
 197     // Get the top alice volume.
 198     TNode *ALIC = gAlice->GetGeometry()->GetNode("alice");
 199     ALIC->cd();
 200
 201     // Define ITS Mother Volume
 202     Float_t data[3];
 203     Float_t ddettest=200.0E-4,ddettelescope=300.0E-4;
 204     Float_t dchipMiniBus=750.0E-4,dchiptest=300.0E-4;
 205     //Float_t yposition= 0.0;
 206     TRotMatrix *r0 = new TRotMatrix("ITSidrotm0","ITSidrotm0",
 207                                     90.0,0,0.0,0,90.0,270.0);
 208     data[0] = 10.0;
 209     data[1] = 50.0;
 210     data[2] = 100.0;
 211     TBRIK *ITSVshape = new TBRIK("ITSVshape","ITS Logical Mother Volume","Air",
 212                                  data[0],data[1],data[2]);
 213     TNode *ITSV = new TNode("ITSV","ITS Mother Volume",ITSVshape,
 214                             0.0,0.0,0.0,0,0);
 215     ITSV->cd(); // set ourselve into ITSV subvolume of ALIC
 216
 217     // SPD part of telescope (MiniBuS)
 218     data[0] = 0.705;
 219     data[1] = 0.5*ddettelescope;
 220     data[2] = 3.536;
 221     TBRIK *IMB0shape = new TBRIK("IMB0shape","SPD wafer","Si",
 222                                  data[0],data[1],data[2]);
 223     Float_t detMiniBusX,detMiniBusY,detMiniBusZ;
 224     data[0] = detMiniBusX = 0.64;
 225     data[1] = detMiniBusY = 0.5*ddettelescope;
 226     data[2] = detMiniBusZ = 3.48;
 227     TBRIK *IMBSshape = new TBRIK("IMBSshape","SPD Sensitive volume","Si",
 228                                  data[0],data[1],data[2]);
 229     Float_t chipMiniBusX,chipMiniBusY,chipMiniBusZ;
 230     data[0] = chipMiniBusX = 0.793;
 231     data[1] = chipMiniBusY = 0.5*dchipMiniBus;
 232     data[2] = chipMiniBusZ = 0.68;
 233     TBRIK *ICMBshape = new TBRIK("ICMBshape","chip Minibus","Si",
 234                                  data[0],data[1],data[2]);
 235     data[0] = TMath::Max(detMiniBusX,chipMiniBusX);
 236     data[1] = detMiniBusY+chipMiniBusY;
 237     data[2] = TMath::Max(detMiniBusZ,chipMiniBusZ);
 238     TBRIK *ITELshape = new TBRIK("ITELshape","ITELshape","Air",
 239                                  data[0],data[1],data[2]);
 240
 241     // SPD under test
 242     Float_t spdX,spdY,spdZ,spdchipX,spdchipY,spdchipZ;
 243     data[0] = 0.705;
 244     data[1] = ddettest;
 245     data[2] = 3.536;
 246     TBRIK *ITS0shape = new TBRIK("ITS0shape","SPD wafer","Si",
 247                                  data[0],data[1],data[2]); // contains detector
 248     data[0] = spdX = 0.64;
 249     data[1] = spdY = ddettest;
 250     data[2] = spdZ = 3.48;
 251     TBRIK *ITSTshape = new TBRIK("ITSTshape","SPD sensitive volume","Si",
 252                                  data[0],data[1],data[2]);
 253     // ITS0 with no translation and unit rotation matrix.
 254     data[0] = spdchipX = 0.793;
 255     data[1] = spdchipY = dchiptest;
 256     data[2] = spdchipZ = 0.68;
 257     TBRIK *IPC0shape = new TBRIK("IPC0shape","Readout Chips","Si",
 258                                  data[0],data[1],data[2]); // chip under test
 259     data[0] = TMath::Max(spdchipX,spdX);
 260     data[1] = spdY+spdchipY;
 261     data[2] = TMath::Max(spdchipZ,spdZ);
 262     TBRIK *IDETshape = new TBRIK("IDETshape","Detector Under Test","Air",
 263                                  data[0],data[1],data[2]);
 264     // Place volumes in geometry
 265     Int_t i,j;
 266     char name[20],title[50];
 267     Double_t px=0.0,py=0.0,pz[4]={-38.0,0.0,0.0,0.0};
 268     pz[1] = pz[0]+2.0;
 269     pz[2] = pz[1]+38.0+spdY+spdchipY+34.5;
 270     pz[3] = pz[2]+2.0;
 271     TNode *ITEL[4],*ICMB[4],*IMB0[4],*IMBS[4];
 272     TNode *IDET = new TNode("IDET","Detector Under Test",IDETshape,
 273                             0.0,0.0,pz[1]+38.0,r0,0);
 274     IDET->cd();
 275     TNode *ITS0 = new TNode("ITS0","SPD Chip",ITS0shape,
 276                             0.0,IDETshape->GetDy()-spdY,0.0,0,0);
 277     TNode *IPC0[5];
 278     for(i=0;i<5;i++) { //place readout chips on the back of SPD chip under test
 279         sprintf(name,"IPC0%d",i);
 280         sprintf(title,"Readout chip #%d",i+1);
 281         j = i-2;
 282         IPC0[i] = new TNode(name,title,IPC0shape,
 283                             0.0,spdchipY-IDETshape->GetDy(),
 284                             j*2.0*spdchipZ+j*0.25*(spdZ-5.*spdchipZ),0,0);
 285     } // end for i
 286     ITS0->cd();
 287     TNode *ITST = new TNode("ITST","SPD sensitive volume",ITSTshape,
 288                             0.0,0.0,0.0,0,0);
 289     for(Int_t i=0;i<4;i++){
 290         ITSV->cd();
 291         sprintf(name,"ITEL%d",i);
 292         sprintf(title,"Test beam telescope element #%d",i+1);
 293         ITEL[i] = new TNode(name,title,ITELshape,px,py,pz[i],r0,0);
 294         ITEL[i]->cd();
 295         ICMB[i] = new TNode("ICMB","Chip MiniBus",ICMBshape,
 296                             0.0,-ITELshape->GetDy()+detMiniBusY,0.0,0,0);
 297         IMB0[i] = new TNode("IMB0","Chip MiniBus",IMB0shape,
 298                             0.0, ITELshape->GetDy()-detMiniBusY,0.0,0,0);
 299         IMB0[i]->cd();
 300         IMBS[i] = new TNode("IMBS","IMBS",IMBSshape,0.0,0.0,0.0,0,0);
 301         // place IMBS inside IMB0 with no translation and unit rotation matrix.
 302     } // end for i
 303     ALIC->cd();
 304     ITST->SetLineColor(kYellow);
 305     fNodes->Add(ITST);
 306     for(i=0;i<4;i++){
 307         IMBS[i]->SetLineColor(kGreen);
 308         fNodes->Add(IMBS[i]);
 309     } // end for i
 310 }
 311 //______________________________________________________________________
 312 void AliITSvSPD02::CreateGeometry(){
 313     ////////////////////////////////////////////////////////////////////////
 314     //  This routine defines and Creates the geometry for version 1 of the ITS.
 315     //    ALIC    ALICE Mother Volume
 316     //     |- ITSV     ITS Mother Volume
 317     //         |- IDET       Detector under Test
 318     //         |   |- ITS0       SPD Si Chip
 319     //         |   |  |- ITST      SPD Sensitivve Volume
 320     //         |   |- IPC0 *5    Readout chip
 321     //         |- ITEL *4    SPD Telescope
 322     //             |- IMB0       SPD Si Chip
 323     //             |   |- IMBS     SPD Sensitive volume
 324     //             |- ICMB       Chip MiniBus.
 325     // Inputs:
 326     //    none.
 327     // Outputs:
 328     //    none.
 329     // Return:
 330     //    none.
 331     ////////////////////////////////////////////////////////////////////////
 332     Float_t data[49];
 333     // Define media off-set
 334     Int_t *idtmed = fIdtmed->GetArray()+1; // array of media indexes
 335     Int_t idrotm[4]; // Array of rotation matrix indexes
 336     Float_t ddettest=200.0E-4,ddettelescope=300.0E-4;
 337     Float_t dchipMiniBus=750.0E-4,dchiptest=300.0E-4;
 338     Float_t yposition= 0.0;
 339
 340     // Define Rotation-reflextion Matrixes needed
 341     // 0 is the unit matrix
 342     AliMatrix(idrotm[0], 90.0,0.0, 0.0,0.0, 90.0,270.0);
 343     data[0] = 10.0;
 344     data[1] = 50.0;
 345     data[2] = 100.0;
 346     gMC->Gsvolu("ITSV","BOX",idtmed[0],data,3);
 347     gMC->Gspos("ITSV",1,"ALIC",0.0,0.0,0.0,0,"ONLY");
 348
 349     //cout << "idtmed[0]=" << idtmed[0]<<endl;
 350     //cout << "idtmed[1]=" << idtmed[1]<<endl;
 351     Float_t detMiniBusX,detMiniBusY,detMiniBusZ;
 352     // SPD part of telescope (MiniBuS)
 353     data[0] = detMiniBusX = 0.705;
 354     data[1] = detMiniBusY = 0.5*ddettelescope;
 355     data[2] = detMiniBusZ = 3.536;
 356     gMC->Gsvolu("IMB0", "BOX ", idtmed[1], data, 3);   // contains detector
 357     data[0] = 0.64;
 358     data[1] = 0.5*ddettelescope;
 359     data[2] = 3.48;
 360     gMC->Gsvolu("IMBS","BOX ",idtmed[1],data,3); // sensitive detecor volulme
 361     gMC->Gspos("IMBS",1,"IMB0",0.0,0.0,0.0,0,"ONLY"); // place IMBS inside
 362     // IMB0 with no translation and unit rotation matrix.
 363     Float_t chipMiniBusX,chipMiniBusY,chipMiniBusZ;
 364     data[0] = chipMiniBusX = 0.793;
 365     data[1] = chipMiniBusY = 0.5*dchipMiniBus;
 366     data[2] = chipMiniBusZ = 0.68;
 367     gMC->Gsvolu("ICMB","BOX ",idtmed[1],data, 3);   // chip Minibus
 368     data[0] = TMath::Max(detMiniBusX,chipMiniBusX);
 369     data[1] = detMiniBusY+chipMiniBusY;
 370     data[2] = TMath::Max(detMiniBusZ,chipMiniBusZ);
 371     gMC->Gsvolu("ITEL","BOX ",idtmed[0],data,3);
 372     gMC->Gspos("IMB0",1,"ITEL",0.0,data[1]-detMiniBusY,0.0,0,"ONLY");
 373     gMC->Gspos("ICMB",1,"ITEL",0.0,-data[1]+chipMiniBusY,0.0,0,"ONLY");
 374
 375     // SPD under test
 376     Float_t spdX,spdY,spdZ,spdchipX,spdchipY,spdchipZ;
 377     data[0] = spdX = 0.705;
 378     data[1] = spdY = 0.5*ddettest;
 379     data[2] = spdZ = 3.536;
 380     gMC->Gsvolu("ITS0", "BOX ", idtmed[1], data, 3);   // contains detector
 381     data[0] = 0.64;
 382     data[1] = 0.5*ddettest;
 383     data[2] = 3.48;
 384     gMC->Gsvolu("ITST","BOX ",idtmed[1],data,3);// sensitive detecor volume
 385     gMC->Gspos("ITST",1,"ITS0",0.0,0.0,0.0,0,"ONLY"); // place ITST inside
 386     // ITS0 with no translation and unit rotation matrix.
 387     data[0] = spdchipX = 0.793;
 388     data[1] = spdchipY = 0.5*dchiptest;
 389     data[2] = spdchipZ = 0.68;
 390     gMC->Gsvolu("IPC0", "BOX ", idtmed[1],data,3);   // chip under test
 391     data[0] = TMath::Max(spdchipX,spdX);
 392     data[1] = spdY+spdchipY;
 393     data[2] = TMath::Max(spdchipZ,spdZ);
 394     gMC->Gsvolu("IDET","BOX ",idtmed[0],data,3);
 395     gMC->Gspos("ITS0",1,"IDET",0.0,data[1]-spdY,0.0,0,"ONLY");
 396     for(Int_t i=-2;i<3;i++) gMC->Gspos("IPC0",i+3,"IDET",0.0,-data[1]+spdchipY,
 397               i*2.*spdchipZ+i*0.25*(spdZ-5.*spdchipZ),0,"ONLY");
 398
 399     // Positions detectors, Beam Axis Z, X to the right, Y up to the sky.
 400     Float_t p00X,p00Y,p00Z,p01X,p01Y,p01Z,p10X,p10Y,p10Z,p11X,p11Y,p11Z;
 401     p00X = 0.0;
 402     p00Y = 0.0;
 403     p00Z = -38.0;
 404     gMC->Gspos("ITEL",1,"ITSV",p00X,p00Y,p00Z,idrotm[0],"ONLY");
 405     p01X = 0.0;
 406     p01Y = 0.0;
 407     p01Z = p00Z+2.0;
 408     gMC->Gspos("ITEL",2,"ITSV",p01X,p01Y,p01Z,idrotm[0],"ONLY");
 409     Float_t pdetX,pdetY,pdetZ;
 410     pdetX = 0.0;
 411     pdetY = 0.0+yposition;
 412     pdetZ = p01Z+38.0;
 413     gMC->Gspos("IDET",1,"ITSV",pdetX,pdetY,pdetZ,idrotm[0],"ONLY");
 414     p10X = 0.0;
 415     p10Y = 0.0;
 416     p10Z = pdetZ + 34.5;
 417     gMC->Gspos("ITEL",3,"ITSV",p10X,p10Y,p10Z,idrotm[0],"ONLY");
 418     p11X = 0.0;
 419     p11Y = 0.0;
 420     p11Z = p10Z+2.0;
 421     gMC->Gspos("ITEL",4,"ITSV",p11X,p11Y,p11Z,idrotm[0],"ONLY");
 422 }
 423 //______________________________________________________________________
 424 void AliITSvSPD02::CreateMaterials(){
 425     ////////////////////////////////////////////////////////////////////////
 426     //
 427     // Create ITS SPD test beam materials
 428     //     This function defines the default materials used in the Geant
 429     // Monte Carlo simulations for the geometries AliITSv1, AliITSv3,
 430     // AliITSvSPD02.
 431     // In general it is automatically replaced by
 432     // the CreatMaterials routine defined in AliITSv?. Should the function
 433     // CreateMaterials not exist for the geometry version you are using this
 434     // one is used. See the definition found in AliITSv5 or the other routine
 435     // for a complete definition.
 436     //
 437     // Inputs:
 438     //    none.
 439     // Outputs:
 440     //    none.
 441     // Return:
 442     //    none.
 443     /////////////////////////////////////////////////////////////////////////
 444     Float_t tmaxfdSi = 0.1; // Degree
 445     Float_t stemaxSi = 0.0075; // cm
 446     Float_t deemaxSi = 0.1; // Fraction of particle's energy 0<deemax<=1
 447     Float_t epsilSi  = 1.0E-4;//
 448     Float_t stminSi  = 0.0; // cm "Default value used"
 449
 450     Float_t tmaxfdAir = 0.1; // Degree
 451     Float_t stemaxAir = .10000E+01; // cm
 452     Float_t deemaxAir = 0.1; // Fraction of particle's energy 0<deemax<=1
 453     Float_t epsilAir  = 1.0E-4;//
 454     Float_t stminAir  = 0.0; // cm "Default value used"
 455     Int_t   ifield = gAlice->Field()->Integ();
 456     Float_t fieldm = gAlice->Field()->Max();
 457
 458     AliMaterial(1,"AIR$",0.14610E+02,0.73000E+01,0.12050E-02,
 459                 0.30423E+05,0.99900E+03);
 460     AliMedium(1,"AIR$",1,0,ifield,fieldm,tmaxfdAir,stemaxAir,deemaxAir,
 461               epsilAir,stminAir);
 462
 463     AliMaterial(2,"SI$",0.28086E+02,0.14000E+02,0.23300E+01,
 464                 0.93600E+01,0.99900E+03);
 465     AliMedium(2,"SI$",2,0,ifield,fieldm,tmaxfdSi,stemaxSi,deemaxSi,
 466               epsilSi,stminSi);
 467 }
 468 //______________________________________________________________________
 469 void AliITSvSPD02::InitAliITSgeom(){
 470     //     Based on the geometry tree defined in Geant 3.21, this
 471     // routine initilizes the Class AliITSgeom from the Geant 3.21 ITS geometry
 472     // sturture.
 473     // Inputs:
 474     //    none.
 475     // Outputs:
 476     //    none.
 477     // Return:
 478     //    none.
 479     if(strcmp(gMC->GetName(),"TGeant3")) {
 480         Error("InitAliITSgeom",
 481                 "Wrong Monte Carlo. InitAliITSgeom uses TGeant3 calls");
 482         return;
 483     } // end if
 484     cout << "Reading Geometry transformation directly from Geant 3." << endl;
 485     const Int_t nlayers = 6;
 486     const Int_t ndeep = 5;
 487     Int_t itsGeomTreeNames[nlayers][ndeep],lnam[20],lnum[20];
 488     Int_t nlad[nlayers],ndet[nlayers];
 489     Double_t t[3],r[10];
 490     Float_t  par[20],att[20];
 491     Int_t    npar,natt,idshape,imat,imed;
 492     AliITSGeant3Geometry *ig = new AliITSGeant3Geometry();
 493     Int_t mod,lay,lad,det,i,j,k;
 494     Char_t names[nlayers][ndeep][4];
 495     Int_t itsGeomTreeCopys[nlayers][ndeep];
 496     Char_t *namesA[nlayers][ndeep] = {
 497      {"ALIC","ITSV","ITEL","IMB0","IMBS"}, // lay=1
 498      {"ALIC","ITSV","IDET","ITS0","ITST"}};// Test SPD
 499     Int_t itsGeomTreeCopysA[nlayers][ndeep]= {{1,1,4,1,1},// lay=1
 500                                               {1,1,1,1,1}};//lay=2 TestSPD
 501     for(i=0;i<nlayers;i++)for(j=0;j<ndeep;j++){
 502         for(k=0;k<4;k++) names[i][j][k] = namesA[i][j][k];
 503         itsGeomTreeCopys[i][j] = itsGeomTreeCopysA[i][j];
 504     } // end for i,j
 505     // Sorry, but this is not very pritty code. It should be replaced
 506     // at some point with a version that can search through the geometry
 507     // tree its self.
 508     cout << "Reading Geometry informaton from Geant3 common blocks" << endl;
 509     for(i=0;i<20;i++) lnam[i] = lnum[i] = 0;
 510     for(i=0;i<nlayers;i++)for(j=0;j<ndeep;j++)
 511         itsGeomTreeNames[i][j] = ig->StringToInt(names[i][j]);
 512     mod = 0;
 513     for(i=0;i<nlayers;i++){
 514         k = 1;
 515         for(j=0;j<ndeep;j++) if(itsGeomTreeCopys[i][j]!=0)
 516             k *= TMath::Abs(itsGeomTreeCopys[i][j]);
 517         mod += k;
 518     } // end for i
 519
 520     if(fITSgeom!=0) delete fITSgeom;
 521     nlad[0]=20;nlad[1]=40;nlad[2]=14;nlad[3]=22;nlad[4]=34;nlad[5]=38;
 522     ndet[0]=4;ndet[1]=4;ndet[2]=6;ndet[3]=8;ndet[4]=22;ndet[5]=25;
 523     fITSgeom = new AliITSgeom(0,6,nlad,ndet,mod);
 524     mod = -1;
 525     for(lay=1;lay<=nlayers;lay++){
 526         for(j=0;j<ndeep;j++) lnam[j] = itsGeomTreeNames[lay-1][j];
 527         for(j=0;j<ndeep;j++) lnum[j] = itsGeomTreeCopys[lay-1][j];
 528         switch (lay){
 529         case 1: case 2: // layers 1 and 2 are a bit special
 530             lad = 0;
 531             for(j=1;j<=itsGeomTreeCopys[lay-1][4];j++){
 532                 lnum[4] = j;
 533                 for(k=1;k<=itsGeomTreeCopys[lay-1][5];k++){
 534                     lad++;
 535                     lnum[5] = k;
 536                     for(det=1;det<=itsGeomTreeCopys[lay-1][6];det++){
 537                         lnum[6] = det;
 538                         mod++;
 539                         ig->GetGeometry(ndeep,lnam,lnum,t,r,idshape,npar,natt,
 540                                         par,att,imat,imed);
 541                         fITSgeom->CreatMatrix(mod,lay,lad,det,kSPD,t,r);
 542                         if(!(fITSgeom->IsShapeDefined((Int_t)kSPD)))
 543                              fITSgeom->ReSetShape(kSPD,
 544                                          new AliITSgeomSPD425Short(npar,par));
 545                     } // end for det
 546                 } // end for k
 547             } // end for j
 548             break;
 549         } // end switch
 550     } // end for lay
 551     return;
 552 }
 553 //______________________________________________________________________
 554 void AliITSvSPD02::Init(){
 555     ////////////////////////////////////////////////////////////////////////
 556     //     Initialise the ITS after it has been created.
 557     // Inputs:
 558     //    none.
 559     // Outputs:
 560     //    none.
 561     // Return:
 562     //    none.
 563     ////////////////////////////////////////////////////////////////////////
 564     Int_t i;
 565
 566     cout << endl;
 567     for(i=0;i<26;i++) cout << "*";
 568     cout << " ITSvSPD02" << fMinorVersion << "_Init ";
 569     for(i=0;i<25;i++) cout << "*";cout << endl;
 570 //
 571     if(fRead[0]=='\0') strncpy(fRead,fEuclidGeomDet,60);
 572     if(fWrite[0]=='\0') strncpy(fWrite,fEuclidGeomDet,60);
 573     if(fITSgeom!=0) delete fITSgeom;
 574     fITSgeom = new AliITSgeom();
 575     if(fGeomDetIn) fITSgeom->ReadNewFile(fRead);
 576     if(!fGeomDetIn) this->InitAliITSgeom();
 577     if(fGeomDetOut) fITSgeom->WriteNewFile(fWrite);
 578     AliITS::Init();
 579 //
 580     for(i=0;i<72;i++) cout << "*";
 581     cout << endl;
 582     fIDMother = gMC->VolId("ITSV"); // ITS Mother Volume ID.
 583 }
 584 //______________________________________________________________________
 585 void AliITSvSPD02::SetDefaults(){
 586     // sets the default segmentation, response, digit and raw cluster classes
 587     // Inputs:
 588     //    none.
 589     // Outputs:
 590     //    none.
 591     // Return:
 592     //    none.
 593     const Float_t kconv = 1.0e+04; // convert cm to microns
 594
 595     Info("SetDefaults","Setting up only SPD detector");
 596
 597     AliITSDetType *iDetType;
 598     AliITSgeomSPD  *s0;
 599     Int_t i;
 600     Float_t bx[256],bz[280];
 601
 602     //SPD
 603     iDetType=DetType(kSPD);
 604     s0 = (AliITSgeomSPD*) fITSgeom->GetShape(kSPD);// Get shape info. Do it this way for now.
 605     AliITSresponse *resp0=new AliITSresponseSPD();
 606     SetResponseModel(kSPD,resp0);
 607     AliITSsegmentationSPD *seg0=new AliITSsegmentationSPD(fITSgeom);
 608     seg0->SetDetSize(s0->GetDx()*2.*kconv, // base this on AliITSgeomSPD
 609                      s0->GetDz()*2.*kconv, // for now.
 610                      s0->GetDy()*2.*kconv); // x,z,y full width in microns.
 611     seg0->SetNPads(256,160);// Number of Bins in x and z
 612     for(i=000;i<256;i++) bx[i] =  50.0; // in x all are 50 microns.
 613     for(i=000;i<160;i++) bz[i] = 425.0; // most are 425 microns except below
 614     for(i=160;i<280;i++) bz[i] =   0.0; // Outside of detector.
 615     bz[ 31] = bz[ 32] = 625.0; // first chip boundry
 616     bz[ 63] = bz[ 64] = 625.0; // first chip boundry
 617     bz[ 95] = bz[ 96] = 625.0; // first chip boundry
 618     bz[127] = bz[128] = 625.0; // first chip boundry
 619     bz[160] = 425.0; // Set so that there is no zero pixel size for fNz.
 620     seg0->SetBinSize(bx,bz); // Based on AliITSgeomSPD for now.
 621     SetSegmentationModel(kSPD,seg0);
 622     // set digit and raw cluster classes to be used
 623     const char *kData0=(iDetType->GetResponseModel())->DataType();
 624     if (strstr(kData0,"real")) iDetType->ClassNames("AliITSdigit",
 625                                                     "AliITSRawClusterSPD");
 626     else iDetType->ClassNames("AliITSdigitSPD","AliITSRawClusterSPD");
 627 //    SetSimulationModel(kSPD,new AliITSsimulationSPD(seg0,resp0));
 628 //    iDetType->ReconstructionModel(new AliITSClusterFinderSPD());
 629
 630     if(kNTYPES>3){
 631         Warning("SetDefaults",
 632                 "Only the four basic detector types are initialised!");
 633     }// end if
 634     return;
 635 }
 636 //______________________________________________________________________
 637 void AliITSvSPD02::DrawModule(){
 638     ////////////////////////////////////////////////////////////////////////
 639     //     Draw a shaded view of the ITS SPD test beam version 1.
 640     // Inputs:
 641     //    none.
 642     // Outputs:
 643     //    none.
 644     // Return:
 645     //    none.
 646     ////////////////////////////////////////////////////////////////////////
 647     // Set everything unseen
 648     gMC->Gsatt("*", "seen", -1);
 649     // Set ALIC mother visible
 650     gMC->Gsatt("ALIC","SEEN",0);
 651     // Set ALIC ITS visible
 652     gMC->Gsatt("ITSV","SEEN",0);
 653     // Set ALIC Telescopes visible
 654     gMC->Gsatt("ITEL","SEEN",0);
 655     // Set ALIC detetcor visible
 656     gMC->Gsatt("IDET","SEEN",0);
 657     // Set Detector chip mother visible and drawn
 658     gMC->Gsatt("IPC0","SEEN",1);
 659     // Set Detector mother visible and drawn
 660     gMC->Gsatt("ITS0","SEEN",1);
 661     // Set minibus chip mother visible and drawn
 662     gMC->Gsatt("ICMB","SEEN",1);
 663     // Set minibus mother visible and drawn
 664     gMC->Gsatt("IMB0","SEEN",1);
 665 }
 666 //______________________________________________________________________
 667 void AliITSvSPD02::StepManager(){
 668     ////////////////////////////////////////////////////////////////////////
 669     //    Called for every step in the ITS SPD test beam, then calles the
 670     // AliITShit class  creator with the information to be recoreded about
 671     //  that hit.
 672     //     The value of the macro ALIITSPRINTGEOM if set to 1 will allow the
 673     // printing of information to a file which can be used to create a .det
 674     // file read in by the routine CreateGeometry(). If set to 0 or any other
 675     // value except 1, the default behavior, then no such file is created nor
 676     // it the extra variables and the like used in the printing allocated.
 677     // Inputs:
 678     //    none.
 679     // Outputs:
 680     //    none.
 681     // Return:
 682     //    none.
 683     ////////////////////////////////////////////////////////////////////////
 684     Int_t         copy, id;
 685     TLorentzVector position, momentum;
 686     static TLorentzVector position0;
 687     static Int_t stat0=0;
 688     if((id=gMC->CurrentVolID(copy) == fIDMother)&&
 689        (gMC->IsTrackEntering()||gMC->IsTrackExiting())){
 690         copy = fTrackReferences->GetEntriesFast();
 691         TClonesArray &lTR = *fTrackReferences;
 692         // Fill TrackReference structure with this new TrackReference.
 693         new(lTR[copy]) AliTrackReference(gAlice->CurrentTrack(),gMC);
 694     } // if Outer ITS mother Volume
 695     if(!(this->IsActive())){
 696         return;
 697     } // end if !Active volume.
 698     Int_t   vol[5];
 699     TClonesArray &lhits = *fHits;
 700     //
 701     // Track status
 702     vol[3] = 0;
 703     vol[4] = 0;
 704     if(gMC->IsTrackInside())      vol[3] +=  1;
 705     if(gMC->IsTrackEntering())    vol[3] +=  2;
 706     if(gMC->IsTrackExiting())     vol[3] +=  4;
 707     if(gMC->IsTrackOut())         vol[3] +=  8;
 708     if(gMC->IsTrackDisappeared()) vol[3] += 16;
 709     if(gMC->IsTrackStop())        vol[3] += 32;
 710     if(gMC->IsTrackAlive())       vol[3] += 64;
 711     //
 712     // Fill hit structure.
 713     if(!(gMC->TrackCharge())) return;
 714     id = gMC->CurrentVolID(copy);
 715     if(id==fIdSens[0]){
 716         vol[0] = vol[1] = 1; // Layer, ladder
 717         id = gMC->CurrentVolOffID(2,copy);
 718         //detector copy in the ladder = 1<->4  (ITS1 < I101 < I103 < I10A)
 719         vol[2] = copy; // detector
 720     } else if(id == fIdSens[1]){
 721         vol[0] = 1; // layer
 722         vol[1] = 2; // ladder
 723         id = gMC->CurrentVolOffID(2,copy);
 724         //detector copy in the ladder = 1<->4  (ITS2 < I1D1 < I1D3 < I20A)
 725         vol[2] = copy;  // detector
 726     } else return; // end if
 727     //
 728     gMC->TrackPosition(position);
 729     gMC->TrackMomentum(momentum);
 730     vol[4] = stat0;
 731     if(gMC->IsTrackEntering()){
 732         position0 = position;
 733         stat0 = vol[3];
 734     } // end if IsEntering
 735     // Fill hit structure with this new hit only for non-entrerance hits.
 736     else new(lhits[fNhits++]) AliITShit(fIshunt,gAlice->CurrentTrack(),vol,
 737                                         gMC->Edep(),gMC->TrackTime(),position,
 738                                         position0,momentum);
 739     //
 740     position0 = position;
 741     stat0 = vol[3];
 742
 743     return;
 744 }
 745