예제 #1
0
AliGenerator* GenBox() {

  AliGenBox *gener = new AliGenBox(10);
  gener->SetMomentumRange(4, 50);
  gener->SetPhiRange(0., 360.);         
  gener->SetThetaRange(170.0,178.0);
  Bool_t isMuPlus = gRandom->Integer(2);
  if (isMuPlus) gener->SetPart(kMuonPlus);           // Muons
  else          gener->SetPart(kMuonMinus);          // Muons
  
  return gener;
  
}
예제 #2
0
AliGenerator* CocktailSignals() {
  
  comment = comment.Append("Cocktail of various signals");

  AliGenCocktail *cocktail = new AliGenCocktail();

  // 1) Dummy generation of positive pions, to keep memory of the production vertex
  AliGenBox *dummyPionPos = new AliGenBox(20);
  dummyPionPos->SetYRange(-0.5, 0.5);
  dummyPionPos->SetPtRange(1., 10.);
  dummyPionPos->SetPart(211);
  cocktail->AddGenerator(dummyPionPos,"dummyPionPos",1);

  // 2) Dummy generation of negative pions, to keep memory of the production vertex
  AliGenBox *dummyPionNeg = new AliGenBox(20);
  dummyPionNeg->SetYRange(-0.5, 0.5);
  dummyPionNeg->SetPtRange(1., 10.);
  dummyPionNeg->SetPart(-211);
  cocktail->AddGenerator(dummyPionNeg,"dummyPionNeg",1);

  // 3) Generator for the custom signal
  AliGenerator* signalGen = 0x0;      
  if      (signal == kPythia6)                   signalGen = MbPythia(); 
  else if (signal == kPythiaPerugia0)            signalGen = MbPythiaTunePerugia0();
  else if (signal == kHijing)                    signalGen = Hijing();	
  else if (signal == kHijing2500)                signalGen = Hijing2500();	
  else if (signal == kGenBox)                    signalGen = GenBox();
  else if (signal == kGenMuonLMR)                signalGen = GenMuonLMR();
  else if (signal == kGenParamJpsi)              signalGen = GenParamJpsi();
  else if (signal == kGenCorrHF)                 signalGen = GenCorrHF();
  else if (signal == kGenPionKaon)               signalGen = GenParamPionKaon();
  else if (signal == kPythiaPerugia0BtoJpsi2mu)  signalGen = MbPythiaTunePerugia0BtoJpsi2mu();
  cocktail->AddGenerator(signalGen, "signal", 1);

  cocktail->SetTrackingFlag(1);

  return cocktail;

}
예제 #3
0
void Config()
{
    // 7-DEC-2000 09:00
    // Switch on Transition Radiation simulation. 6/12/00 18:00
    // iZDC=1  7/12/00 09:00
    // ThetaRange is (0., 180.). It was (0.28,179.72) 7/12/00 09:00
    // Theta range given through pseudorapidity limits 22/6/2001

    // Set Random Number seed
    // AliLoader::SetDebug(5) ; 
    gRandom->SetSeed(12345);


   // libraries required by geant321
    gSystem->Load("libgeant321");

    new     TGeant3("C++ Interface to Geant3");

    if (!gSystem->Getenv("CONFIG_FILE"))
    {
        cout<<"Config.C: Creating Run Loader ..."<<endl;
        AliRunLoader* rl = AliRunLoader::Open("galice.root",AliConfig::GetDefaultEventFolderName(),
                                              "recreate");
        if (rl == 0x0)
         {
           gAlice->Fatal("Config.C","Can not instatiate the Run Loader");
           return;
         }
        rl->SetCompressionLevel(2);
        rl->SetNumberOfEventsPerFile(1000);
        gAlice->SetRunLoader(rl);
    }

    TGeant3 *geant3 = (TGeant3 *) gMC;

    //
    // Set External decayer
    TVirtualMCDecayer *decayer = new AliDecayerPythia();

    decayer->SetForceDecay(kAll);
    decayer->Init();
    gMC->SetExternalDecayer(decayer);
    //
    //
    //=======================================================================
    // ******* GEANT STEERING parameters FOR ALICE SIMULATION *******
    geant3->SetTRIG(1);         //Number of events to be processed 
    geant3->SetSWIT(4, 10);
    geant3->SetDEBU(0, 0, 1);
    //geant3->SetSWIT(2,2);
    geant3->SetDCAY(1);
    geant3->SetPAIR(1);
    geant3->SetCOMP(1);
    geant3->SetPHOT(1);
    geant3->SetPFIS(0);
    geant3->SetDRAY(0);
    geant3->SetANNI(1);
    geant3->SetBREM(1);
    geant3->SetMUNU(1);
    geant3->SetCKOV(1);
    geant3->SetHADR(1);         //Select pure GEANH (HADR 1) or GEANH/NUCRIN (HADR 3)
    geant3->SetLOSS(2);
    geant3->SetMULS(1);
    geant3->SetRAYL(1);
    geant3->SetAUTO(1);         //Select automatic STMIN etc... calc. (AUTO 1) or manual (AUTO 0)
    geant3->SetABAN(0);         //Restore 3.16 behaviour for abandoned tracks
    geant3->SetOPTI(2);         //Select optimisation level for GEANT geometry searches (0,1,2)
    geant3->SetERAN(5.e-7);

    Float_t cut = 1.e-3;        // 1MeV cut by default
    Float_t tofmax = 1.e10;

    //             GAM ELEC NHAD CHAD MUON EBREM MUHAB EDEL MUDEL MUPA TOFMAX
    geant3->SetCUTS(cut, cut, cut, cut, cut, cut, cut, cut, cut, cut,
                    tofmax);
    //
    //=======================================================================
    // ************* STEERING parameters FOR ALICE SIMULATION **************
    // --- Specify event type to be tracked through the ALICE setup
    // --- All positions are in cm, angles in degrees, and P and E in GeV
    if (gSystem->Getenv("CONFIG_NPARTICLES"))
    {
        int     nParticles = atoi(gSystem->Getenv("CONFIG_NPARTICLES"));
    } else
    {
        int     nParticles = 10;
    }
 //    AliGenCocktail *gener = new AliGenCocktail();
//     gener->SetPhiRange(220, 320);
//     // Set pseudorapidity range from -8 to 8.
//     Float_t thmin = EtaToTheta(0.12);   // theta min. <---> eta max
//     Float_t thmax = EtaToTheta(-0.12);  // theta max. <---> eta min 
//     gener->SetThetaRange(thmin,thmax);
//     gener->SetOrigin(0, 0, 0);  //vertex position
//     gener->SetSigma(0, 0, 0);   //Sigma in (X,Y,Z) (cm) on IP position

//     AliGenHIJINGpara *hijingparam = new AliGenHIJINGpara(nParticles);
//     hijingparam->SetMomentumRange(0.2, 999);
//     gener->AddGenerator(hijingparam,"HIJING PARAM",1);

//     AliGenBox *genbox = new AliGenBox(nParticles);
//     genbox->SetPart(kGamma);
//     genbox->SetPtRange(0.3, 10.00);
//     gener->AddGenerator(genbox,"GENBOX GAMMA for PHOS",1);
//     gener->Init();

    AliGenBox *gener = new AliGenBox(1);
    gener->SetMomentumRange(10,11.);
    gener->SetPhiRange(270.5,270.7);
    gener->SetThetaRange(90.5,90.7);

    gener->SetOrigin(0,0,0);        //vertex position
    gener->SetSigma(0,0,0);         //Sigma in (X,Y,Z) (cm) on IP position
    gener->SetPart(kGamma);
    gener->Init();
 
    // 
    // Activate this line if you want the vertex smearing to happen
    // track by track
    //
    //gener->SetVertexSmear(perTrack); 
    // Field (L3 0.4 T)
    TGeoGlobalMagField::Instance()->SetField(new AliMagF("Maps","Maps", 1., 1., AliMagF::k5kG));

    Int_t   iABSO  =  0;
    Int_t   iDIPO  =  0;
    Int_t   iFMD   =  0;
    Int_t   iFRAME =  0;
    Int_t   iHALL  =  0;
    Int_t   iITS   =  0;
    Int_t   iMAG   =  0;
    Int_t   iMUON  =  0;
    Int_t   iPHOS  =  1;
    Int_t   iPIPE  =  0;
    Int_t   iPMD   =  0;
    Int_t   iHMPID  =  0;
    Int_t   iSHIL  =  0;
    Int_t   iT0 =  0;
    Int_t   iTOF   =  0;
    Int_t   iTPC   =  0;
    Int_t   iTRD   =  0;
    Int_t   iZDC   =  0;
    Int_t   iEMCAL =  0;
    Int_t   iACORDE   =  0;
    Int_t   iVZERO =  0;
    rl->CdGAFile();
    //=================== Alice BODY parameters =============================
    AliBODY *BODY = new AliBODY("BODY", "Alice envelop");

    if (iMAG)
    {
        //=================== MAG parameters ============================
        // --- Start with Magnet since detector layouts may be depending ---
        // --- on the selected Magnet dimensions ---
        AliMAG *MAG = new AliMAG("MAG", "Magnet");
    }


    if (iABSO)
    {
        //=================== ABSO parameters ============================
        AliABSO *ABSO = new AliABSOv0("ABSO", "Muon Absorber");
    }

    if (iDIPO)
    {
        //=================== DIPO parameters ============================

        AliDIPO *DIPO = new AliDIPOv2("DIPO", "Dipole version 2");
    }

    if (iHALL)
    {
        //=================== HALL parameters ============================

        AliHALL *HALL = new AliHALL("HALL", "Alice Hall");
    }


    if (iFRAME)
    {
        //=================== FRAME parameters ============================

        AliFRAMEv2 *FRAME = new AliFRAMEv2("FRAME", "Space Frame");
	if (geo == kHoles) {
	    FRAME->SetHoles(1);
	} else {
	    FRAME->SetHoles(0);
	}
    }

    if (iSHIL)
    {
        //=================== SHIL parameters ============================

        AliSHIL *SHIL = new AliSHILv2("SHIL", "Shielding Version 2");
    }


    if (iPIPE)
    {
        //=================== PIPE parameters ============================

        AliPIPE *PIPE = new AliPIPEv0("PIPE", "Beam Pipe");
    }
 
    if(iITS) {

    //=================== ITS parameters ============================
    //
    // As the innermost detector in ALICE, the Inner Tracking System "impacts" on
    // almost all other detectors. This involves the fact that the ITS geometry
    // still has several options to be followed in parallel in order to determine
    // the best set-up which minimizes the induced background. All the geometries
    // available to date are described in the following. Read carefully the comments
    // and use the default version (the only one uncommented) unless you are making
    // comparisons and you know what you are doing. In this case just uncomment the
    // ITS geometry you want to use and run Aliroot.
    //
    // Detailed geometries:         
    //
    //
    //AliITS *ITS  = new AliITSv5symm("ITS","Updated ITS TDR detailed version with symmetric services");
    //
    //AliITS *ITS  = new AliITSv5asymm("ITS","Updates ITS TDR detailed version with asymmetric services");
    //
	AliITSvPPRasymm *ITS  = new AliITSvPPRasymm("ITS","New ITS PPR detailed version with asymmetric services");
	ITS->SetMinorVersion(2);					 // don't touch this parameter if you're not an ITS developer
	ITS->SetReadDet(kFALSE);					 // don't touch this parameter if you're not an ITS developer
    //    ITS->SetWriteDet("$ALICE_ROOT/ITS/ITSgeometry_vPPRasymm2.det");  // don't touch this parameter if you're not an ITS developer
	ITS->SetThicknessDet1(200.);   // detector thickness on layer 1 must be in the range [100,300]
	ITS->SetThicknessDet2(200.);   // detector thickness on layer 2 must be in the range [100,300]
	ITS->SetThicknessChip1(200.);  // chip thickness on layer 1 must be in the range [150,300]
	ITS->SetThicknessChip2(200.);  // chip thickness on layer 2 must be in the range [150,300]
	ITS->SetRails(0);	     // 1 --> rails in ; 0 --> rails out
	ITS->SetCoolingFluid(1);   // 1 --> water ; 0 --> freon
	//
    //AliITSvPPRsymm *ITS  = new AliITSvPPRsymm("ITS","New ITS PPR detailed version with symmetric services");
    //ITS->SetMinorVersion(2);                                       // don't touch this parameter if you're not an ITS developer
    //ITS->SetReadDet(kFALSE);                                       // don't touch this parameter if you're not an ITS developer
    //ITS->SetWriteDet("$ALICE_ROOT/ITS/ITSgeometry_vPPRsymm2.det"); // don't touch this parameter if you're not an ITS developer
    //ITS->SetThicknessDet1(200.);   // detector thickness on layer 1 must be in the range [100,300]
    //ITS->SetThicknessDet2(200.);   // detector thickness on layer 2 must be in the range [100,300]
    //ITS->SetThicknessChip1(200.);  // chip thickness on layer 1 must be in the range [150,300]
    //ITS->SetThicknessChip2(200.);  // chip thickness on layer 2 must be in the range [150,300]
    //ITS->SetRails(0);              // 1 --> rails in ; 0 --> rails out
    //ITS->SetCoolingFluid(1);       // 1 --> water ; 0 --> freon
    //
    //
    // Coarse geometries (warning: no hits are produced with these coarse geometries and they unuseful 
    // for reconstruction !):
    //                                                     
    //
    //AliITSvPPRcoarseasymm *ITS  = new AliITSvPPRcoarseasymm("ITS","New ITS PPR coarse version with asymmetric services");
    //ITS->SetRails(0);                // 1 --> rails in ; 0 --> rails out
    //ITS->SetSupportMaterial(0);      // 0 --> Copper ; 1 --> Aluminum ; 2 --> Carbon
    //
    //AliITS *ITS  = new AliITSvPPRcoarsesymm("ITS","New ITS PPR coarse version with symmetric services");
    //ITS->SetRails(0);                // 1 --> rails in ; 0 --> rails out
    //ITS->SetSupportMaterial(0);      // 0 --> Copper ; 1 --> Aluminum ; 2 --> Carbon
    //                      
    //
    //
    // Geant3 <-> EUCLID conversion
    // ============================
    //
    // SetEUCLID is a flag to output (=1) or not to output (=0) both geometry and
    // media to two ASCII files (called by default ITSgeometry.euc and
    // ITSgeometry.tme) in a format understandable to the CAD system EUCLID.
    // The default (=0) means that you dont want to use this facility.
    //
     ITS->SetEUCLID(0);  
    }

    if (iTPC)
    {
        //============================ TPC parameters ================================
        // --- This allows the user to specify sectors for the SLOW (TPC geometry 2)
        // --- Simulator. SecAL (SecAU) <0 means that ALL lower (upper)
        // --- sectors are specified, any value other than that requires at least one 
        // --- sector (lower or upper)to be specified!
        // --- Reminder: sectors 1-24 are lower sectors (1-12 -> z>0, 13-24 -> z<0)
        // ---           sectors 25-72 are the upper ones (25-48 -> z>0, 49-72 -> z<0)
        // --- SecLows - number of lower sectors specified (up to 6)
        // --- SecUps - number of upper sectors specified (up to 12)
        // --- Sens - sensitive strips for the Slow Simulator !!!
        // --- This does NOT work if all S or L-sectors are specified, i.e.
        // --- if SecAL or SecAU < 0
        //
        //
        //-----------------------------------------------------------------------------

        //  gROOT->LoadMacro("SetTPCParam.C");
        //  AliTPCParam *param = SetTPCParam();
        AliTPC *TPC = new AliTPCv2("TPC", "Default");

        // All sectors included 
        TPC->SetSecAU(-1);
        TPC->SetSecAL(-1);
    }


    if (iTOF) {
	if (geo == kHoles) {
        //=================== TOF parameters ============================
	    AliTOF *TOF = new AliTOFv2FHoles("TOF", "TOF with Holes");
	} else {
	    AliTOF *TOF = new AliTOFv4T0("TOF", "normal TOF");
	}
    }


    if (iHMPID)
    {
        //=================== HMPID parameters ===========================
        AliHMPID *HMPID = new AliHMPIDv3("HMPID", "normal HMPID");

    }


    if (iZDC)
    {
        //=================== ZDC parameters ============================

        AliZDC *ZDC = new AliZDCv2("ZDC", "normal ZDC");
    }

    if (iTRD)
    {
        //=================== TRD parameters ============================

        AliTRD *TRD = new AliTRDv1("TRD", "TRD slow simulator");

        // Select the gas mixture (0: 97% Xe + 3% isobutane, 1: 90% Xe + 10% CO2)
        TRD->SetGasMix(1);
	if (geo == kHoles) {
	    // With hole in front of PHOS
	    TRD->SetPHOShole();
	    // With hole in front of HMPID
	    TRD->SetHMPIDhole();
	}
	    // Switch on TR
	    AliTRDsim *TRDsim = TRD->CreateTR();
    }

    if (iFMD)
    {
        //=================== FMD parameters ============================
	AliFMD *FMD = new AliFMDv1("FMD", "normal FMD");
        FMD->SetRingsSi1(256);
        FMD->SetRingsSi2(128);
        FMD->SetSectorsSi1(20);
        FMD->SetSectorsSi2(40);      
   }

    if (iMUON)
    {
        //=================== MUON parameters ===========================

        AliMUON *MUON = new AliMUONv1("MUON", "default");
    }
    //=================== PHOS parameters ===========================

    if (iPHOS)
    {
        AliPHOS *PHOS = new AliPHOSv1("PHOS", "IHEP");
    }


    if (iPMD)
    {
        //=================== PMD parameters ============================
        AliPMD *PMD = new AliPMDv1("PMD", "normal PMD");
    }

    if (iT0)
    {
        //=================== T0 parameters ============================
        AliT0 *T0 = new AliT0v1("T0", "T0 Detector");
    }

    if (iEMCAL)
    {
        //=================== EMCAL parameters ============================
        AliEMCAL *EMCAL = new AliEMCALv1("EMCAL", "EMCALArch1a");
    }

     if (iACORDE)
    {
        //=================== ACORDE parameters ============================
        AliACORDE *ACORDE = new AliACORDEv1("ACORDE", "normal ACORDE");
    }

     if (iVZERO)
    {
        //=================== ACORDE parameters ============================
        AliVZERO *VZERO = new AliVZEROv2("VZERO", "normal VZERO");
    }

}
예제 #4
0
파일: Config.C 프로젝트: alisw/AliRoot
void Config()
{
 
  // Get settings from environment variables
  ProcessEnvironmentVars();
  gRandom->SetSeed(seed);
  //  gRandom->SetSeed(12345);
  cerr<<"Seed for random number generation= "<<seed<<endl; 
  // libraries required by geant321
#if defined(__CINT__)
  gSystem->Load("libgeant321");
#endif
  new TGeant3TGeo("C++ Interface to Geant3");
  //=======================================================================
  //  Create the output file
   
  AliRunLoader* rl=0x0;
  cout<<"Config.C: Creating Run Loader ..."<<endl;
  rl = AliRunLoader::Open("galice.root",
			  AliConfig::GetDefaultEventFolderName(),
			  "recreate");
  if (rl == 0x0)
    {
      gAlice->Fatal("Config.C","Can not instatiate the Run Loader");
      return;
    }
  rl->SetCompressionLevel(2);
  rl->SetNumberOfEventsPerFile(1000);
  gAlice->SetRunLoader(rl);
  
  // Set the trigger configuration
  AliSimulation::Instance()->SetTriggerConfig(TrigConfName[trig]);
  cout<<"Trigger configuration is set to  "<<TrigConfName[trig]<<endl;
  //
  //=======================================================================
  // ************* STEERING parameters FOR ALICE SIMULATION **************
  // --- Specify event type to be tracked through the ALICE setup
  // --- All positions are in cm, angles in degrees, and P and E in GeV
    gMC->SetProcess("DCAY",1);
    gMC->SetProcess("PAIR",1);
    gMC->SetProcess("COMP",1);
    gMC->SetProcess("PHOT",1);
    gMC->SetProcess("PFIS",0);
    gMC->SetProcess("DRAY",0);
    gMC->SetProcess("ANNI",1);
    gMC->SetProcess("BREM",1);
    gMC->SetProcess("MUNU",1);
    gMC->SetProcess("CKOV",1);
    gMC->SetProcess("HADR",1);
    gMC->SetProcess("LOSS",2);
    gMC->SetProcess("MULS",1);
    gMC->SetProcess("RAYL",1);
    Float_t cut = 1.e-3;        // 1MeV cut by default
    Float_t tofmax = 1.e10;
    gMC->SetCut("CUTGAM", cut);
    gMC->SetCut("CUTELE", cut);
    gMC->SetCut("CUTNEU", cut);
    gMC->SetCut("CUTHAD", cut);
    gMC->SetCut("CUTMUO", cut);
    gMC->SetCut("BCUTE",  cut); 
    gMC->SetCut("BCUTM",  cut); 
    gMC->SetCut("DCUTE",  cut); 
    gMC->SetCut("DCUTM",  cut); 
    gMC->SetCut("PPCUTM", cut);
    gMC->SetCut("TOFMAX", tofmax); 
    //    ((TGeant3 *) gMC)->SetSWIT(2,2); 
    //    ((TGeant3 *) gMC)->SetDEBU(1,999,1); 
  // Set External decayer //
  //======================//
  TVirtualMCDecayer* decayer = new AliDecayerPythia();
  // DECAYS
  //
  switch(decHvFl) {
  case kNature:
    decayer->SetForceDecay(kAll);
    break;
  case kHadr:
    decayer->SetForceDecay(kHadronicD);
    break;
  case kSemiEl:
    decayer->SetForceDecay(kSemiElectronic);
    break;
  case kSemiMu:
    decayer->SetForceDecay(kSemiMuonic);
    break;
  }
  decayer->Init();
  gMC->SetExternalDecayer(decayer);
  //=========================//
  // Generator Configuration //
  //=========================//
  AliGenBox* gener = new AliGenBox();
  gener->SetThetaRange(45,135);
  gener->SetPhiRange(30,150);
  gener->SetMomentumRange(9.8,10.2);
  gener->SetPart(kMuonMinus);
  gener->SetNumberParticles(20);
  gener->Init();
  // FIELD
  //    
  if (mag == AliMagF::k2kG) {
    comment = comment.Append(" | L3 field 0.2 T");
  } else if (mag == AliMagF::k5kG) {
    comment = comment.Append(" | L3 field 0.5 T");
  }
  printf("\n \n Comment: %s \n \n", comment.Data());
    
  AliMagF* field = new AliMagF("Maps","Maps",-1.,-1., mag);
  TGeoGlobalMagField::Instance()->SetField(field);

  rl->CdGAFile();

  Int_t iABSO  = 0;
  Int_t iACORDE = 1;
  Int_t iDIPO  = 0;
  Int_t iEMCAL = 0;
  Int_t iFMD   = 0;
  Int_t iFRAME = 0;
  Int_t iHALL  = 0;
  Int_t iITS   = 0;
  Int_t iMAG   = 0;
  Int_t iMUON  = 0;
  Int_t iPHOS  = 0;
  Int_t iPIPE  = 0;
  Int_t iPMD   = 0;
  Int_t iHMPID  = 0;
  Int_t iSHIL  = 0;
  Int_t iT0 = 0;
  Int_t iTOF   = 0;
  Int_t iTPC   = 0;
  Int_t iTRD   = 0;
  Int_t iVZERO = 0;
  Int_t iZDC   = 0;
  
    //=================== Alice BODY parameters =============================
    AliBODY *BODY = new AliBODY("BODY", "Alice envelop");
    if (iMAG)
    {
        //=================== MAG parameters ============================
        // --- Start with Magnet since detector layouts may be depending ---
        // --- on the selected Magnet dimensions ---
        AliMAG *MAG = new AliMAG("MAG", "Magnet");
    }
    if (iABSO)
    {
        //=================== ABSO parameters ============================
        AliABSO *ABSO = new AliABSOv0("ABSO", "Muon Absorber");
    }
    if (iDIPO)
    {
        //=================== DIPO parameters ============================
        AliDIPO *DIPO = new AliDIPOv2("DIPO", "Dipole version 2");
    }
    if (iHALL)
    {
        //=================== HALL parameters ============================
        AliHALL *HALL = new AliHALL("HALL", "Alice Hall");
    }
    if (iFRAME)
    {
        //=================== FRAME parameters ============================
        AliFRAMEv2 *FRAME = new AliFRAMEv2("FRAME", "Space Frame");
    }
    if (iSHIL)
    {
        //=================== SHIL parameters ============================
        AliSHIL *SHIL = new AliSHILv2("SHIL", "Shielding Version 2");
    }
    if (iPIPE)
    {
        //=================== PIPE parameters ============================
        AliPIPE *PIPE = new AliPIPEv0("PIPE", "Beam Pipe");
    }
 
    if(iITS) {
    //=================== ITS parameters ============================
    //
    // As the innermost detector in ALICE, the Inner Tracking System "impacts" on
    // almost all other detectors. This involves the fact that the ITS geometry
    // still has several options to be followed in parallel in order to determine
    // the best set-up which minimizes the induced background. All the geometries
    // available to date are described in the following. Read carefully the comments
    // and use the default version (the only one uncommented) unless you are making
    // comparisons and you know what you are doing. In this case just uncomment the
    // ITS geometry you want to use and run Aliroot.
    //
    // Detailed geometries:         
    //
    //
    //AliITS *ITS  = new AliITSv5symm("ITS","Updated ITS TDR detailed version with symmetric services");
    //
    //AliITS *ITS  = new AliITSv5asymm("ITS","Updates ITS TDR detailed version with asymmetric services");
    //
	AliITSvPPRasymmFMD *ITS  = new AliITSvPPRasymmFMD("ITS","New ITS PPR detailed version with asymmetric services");
	ITS->SetMinorVersion(2);  // don't touch this parameter if you're not an ITS developer
	ITS->SetReadDet(kFALSE);	  // don't touch this parameter if you're not an ITS developer
    //    ITS->SetWriteDet("$ALICE_ROOT/ITS/ITSgeometry_vPPRasymm2.det");  // don't touch this parameter if you're not an ITS developer
	ITS->SetThicknessDet1(200.);   // detector thickness on layer 1 must be in the range [100,300]
	ITS->SetThicknessDet2(200.);   // detector thickness on layer 2 must be in the range [100,300]
	ITS->SetThicknessChip1(150.);  // chip thickness on layer 1 must be in the range [150,300]
	ITS->SetThicknessChip2(150.);  // chip thickness on layer 2 must be in the range [150,300]
	ITS->SetRails(0);	     // 1 --> rails in ; 0 --> rails out
	ITS->SetCoolingFluid(1);   // 1 --> water ; 0 --> freon
    // Coarse geometries (warning: no hits are produced with these coarse geometries and they unuseful 
    // for reconstruction !):
    //                                                     
    //
    //AliITSvPPRcoarseasymm *ITS  = new AliITSvPPRcoarseasymm("ITS","New ITS PPR coarse version with asymmetric services");
    //ITS->SetRails(0);                // 1 --> rails in ; 0 --> rails out
    //ITS->SetSupportMaterial(0);      // 0 --> Copper ; 1 --> Aluminum ; 2 --> Carbon
    //
    //AliITS *ITS  = new AliITSvPPRcoarsesymm("ITS","New ITS PPR coarse version with symmetric services");
    //ITS->SetRails(0);                // 1 --> rails in ; 0 --> rails out
    //ITS->SetSupportMaterial(0);      // 0 --> Copper ; 1 --> Aluminum ; 2 --> Carbon
    //                      
    //
    //
    // Geant3 <-> EUCLID conversion
    // ============================
    //
    // SetEUCLID is a flag to output (=1) or not to output (=0) both geometry and
    // media to two ASCII files (called by default ITSgeometry.euc and
    // ITSgeometry.tme) in a format understandable to the CAD system EUCLID.
    // The default (=0) means that you dont want to use this facility.
    //
	ITS->SetEUCLID(0);  
    }
    if (iTPC)
    {
      //============================ TPC parameters =====================
        AliTPC *TPC = new AliTPCv2("TPC", "Default");
    }
    if (iTOF) {
        //=================== TOF parameters ============================
	AliTOF *TOF = new AliTOFv5T0("TOF", "normal TOF");
	// Partial geometry: modules at 2,3,4,6,7,11,12,14,15,16
	// starting at 6h in positive direction
	//	Int_t TOFSectors[18]={-1,-1,0,0,0,-1,0,0,-1,-1,-1,0,0,-1,0,0,0,0};
	// Partial geometry: modules at 1,2,6,7,9,10,11,12,15,16,17
	// (ALICE numbering convention)
       	Int_t TOFSectors[18]={-1,0,0,-1,-1,-1,0,0,-1,0,0,0,0,-1,-1,0,0,0};
	TOF->SetTOFSectors(TOFSectors);
    }
    if (iHMPID)
    {
        //=================== HMPID parameters ===========================
        AliHMPID *HMPID = new AliHMPIDv1("HMPID", "normal HMPID");
    }
    if (iZDC)
    {
        //=================== ZDC parameters ============================
        AliZDC *ZDC = new AliZDCv2("ZDC", "normal ZDC");
    }
    if (iTRD)
    {
        //=================== TRD parameters ============================
        AliTRD *TRD = new AliTRDv1("TRD", "TRD slow simulator");
        AliTRDgeometry *geoTRD = TRD->GetGeometry();
	// Partial geometry: modules at 2,3,4,6,11,12,14,15
	// starting at 6h in positive direction
	geoTRD->SetSMstatus(0,0);
        geoTRD->SetSMstatus(1,0);
        geoTRD->SetSMstatus(5,0);
        geoTRD->SetSMstatus(7,0);
        geoTRD->SetSMstatus(8,0);
        geoTRD->SetSMstatus(9,0);
        geoTRD->SetSMstatus(10,0);
        geoTRD->SetSMstatus(13,0);
        geoTRD->SetSMstatus(16,0);
        geoTRD->SetSMstatus(17,0);
    }
    if (iFMD)
    {
        //=================== FMD parameters ============================
	AliFMD *FMD = new AliFMDv1("FMD", "normal FMD");
   }
    if (iMUON)
    {
        //=================== MUON parameters ===========================
        // New MUONv1 version (geometry defined via builders)
        AliMUON *MUON = new AliMUONv1("MUON", "default");
    }
    //=================== PHOS parameters ===========================
    if (iPHOS)
    {
        AliPHOS *PHOS = new AliPHOSv1("PHOS", "IHEP");
    }
    if (iPMD)
    {
        //=================== PMD parameters ============================
        AliPMD *PMD = new AliPMDv1("PMD", "normal PMD");
    }
    if (iT0)
    {
        //=================== T0 parameters ============================
        AliT0 *T0 = new AliT0v1("T0", "T0 Detector");
    }
    if (iEMCAL)
    {
        //=================== EMCAL parameters ============================
        AliEMCAL *EMCAL = new AliEMCALv2("EMCAL", "EMCAL_COMPLETEV1");
    }
     if (iACORDE)
    {
        //=================== ACORDE parameters ============================
        AliACORDE *ACORDE = new AliACORDEv1("ACORDE", "normal ACORDE");
	// ACORDE->SetITSGeometry(kTRUE);
	// ACORDE->SetCreateCavern(kFALSE);
    }
     if (iVZERO)
    {
        //=================== VZERO parameters =============================
        AliVZERO *VZERO = new AliVZEROv7("VZERO", "normal VZERO");
    }
}