Ejemplo n.º 1
0
void Config()
{
    

  // Get settings from environment variables
  ProcessEnvironmentVars();

  gRandom->SetSeed(seed);
  cerr<<"Seed for random number generation= "<<seed<<endl; 

  // Libraries required by geant321
#if defined(__CINT__)
  gSystem->Load("liblhapdf");      // Parton density functions
  gSystem->Load("libEGPythia6");   // TGenerator interface
  gSystem->Load("libpythia6");     // Pythia
  gSystem->Load("libAliPythia6");  // ALICE specific implementations
  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);
  // gAlice->SetGeometryFromFile("geometry.root");
  // gAlice->SetGeometryFromCDB();
  
  // Set the trigger configuration: proton-proton
  gAlice->SetTriggerDescriptor("p-p");

  //
  //=======================================================================
  // ************* 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); 




  //======================//
  // Set External decayer //
  //======================//
  TVirtualMCDecayer* decayer = new AliDecayerPythia();
  decayer->SetForceDecay(kAll);
  decayer->Init();
  gMC->SetExternalDecayer(decayer);

  //=========================//
  // Generator Configuration //
  //=========================//
  AliGenerator* gener = 0x0;
  
  if (proc == kPythia6) {
      gener = MbPythia();
  } else if (proc == kPhojet) {
      gener = MbPhojet();
  }
  
  

  // PRIMARY VERTEX
  //
  gener->SetOrigin(0., 0., 0.);    // vertex position
  //
  //
  // Size of the interaction diamond
  // Longitudinal
  Float_t sigmaz  = 5.4 / TMath::Sqrt(2.); // [cm]
  if (energy == 900)
    sigmaz  = 10.5 / TMath::Sqrt(2.); // [cm]
  //
  // Transverse
  Float_t betast  = 10;                 // beta* [m]
  Float_t eps     = 3.75e-6;            // emittance [m]
  Float_t gamma   = energy / 2.0 / 0.938272;  // relativistic gamma [1]
  Float_t sigmaxy = TMath::Sqrt(eps * betast / gamma) / TMath::Sqrt(2.) * 100.;  // [cm]
  printf("\n \n Diamond size x-y: %10.3e z: %10.3e\n \n", sigmaxy, sigmaz);
    
  gener->SetSigma(sigmaxy, sigmaxy, sigmaz);      // Sigma in (X,Y,Z) (cm) on IP position
  gener->SetCutVertexZ(3.);        // Truncate at 3 sigma
  gener->SetVertexSmear(kPerEvent);

  gener->Init();

  // FIELD
  //
  AliMagWrapCheb* field = 0x0;
  if (mag == kNoField) {
    comment = comment.Append(" | L3 field 0.0 T");
    field = new AliMagWrapCheb("Maps","Maps", 2, 0., 10., AliMagWrapCheb::k2kG);
  } else if (mag == k5kG) {
    comment = comment.Append(" | L3 field 0.5 T");
    field = new AliMagWrapCheb("Maps","Maps", 2, 1., 10., AliMagWrapCheb::k5kG);
  }
  printf("\n \n Comment: %s \n \n", comment.Data());
    
  rl->CdGAFile();
  gAlice->SetField(field);    



  Int_t iABSO  = 1;
  Int_t iACORDE= 0;
  Int_t iDIPO  = 1;
  Int_t iEMCAL = 0;
  Int_t iFMD   = 1;
  Int_t iFRAME = 1;
  Int_t iHALL  = 1;
  Int_t iITS   = 1;
  Int_t iMAG   = 1;
  Int_t iMUON  = 1;
  Int_t iPHOS  = 1;
  Int_t iPIPE  = 1;
  Int_t iPMD   = 0;
  Int_t iHMPID = 1;
  Int_t iSHIL  = 1;
  Int_t iT0    = 1;
  Int_t iTOF   = 1;
  Int_t iTPC   = 1;
  Int_t iTRD   = 1;
  Int_t iVZERO = 1;
  Int_t iZDC   = 1;
  

    //=================== 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 AliABSOv3("ABSO", "Muon Absorber");
    }

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

        AliDIPO *DIPO = new AliDIPOv3("DIPO", "Dipole version 3");
    }

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

        AliHALL *HALL = new AliHALLv3("HALL", "Alice Hall");
    }


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

        AliFRAMEv2 *FRAME = new AliFRAMEv2("FRAME", "Space Frame");
        FRAME->SetHoles(1);
    }

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

        AliSHIL *SHIL = new AliSHILv3("SHIL", "Shielding Version 3");
    }


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

        AliPIPE *PIPE = new AliPIPEv3("PIPE", "Beam Pipe");
    }
 
    if (iITS)
    {
        //=================== ITS parameters ============================

        AliITS *ITS  = new AliITSv11Hybrid("ITS","ITS v11Hybrid");
    }

    if (iTPC)
    {
      //============================ TPC parameters =====================

        AliTPC *TPC = new AliTPCv2("TPC", "Default");
    }


    if (iTOF) {
        //=================== TOF parameters ============================

        AliTOF *TOF = new AliTOFv6T0("TOF", "normal TOF");
    }


    if (iHMPID)
    {
        //=================== HMPID parameters ===========================

        AliHMPID *HMPID = new AliHMPIDv3("HMPID", "normal HMPID");

    }


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

        AliZDC *ZDC = new AliZDCv3("ZDC", "normal ZDC");
    }

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

        AliTRD *TRD = new AliTRDv1("TRD", "TRD slow simulator");
        AliTRDgeometry *geoTRD = TRD->GetGeometry();
        // Partial geometry: modules at 0,8,9,17
        // starting at 3h in positive direction
        geoTRD->SetSMstatus(1,0);
        geoTRD->SetSMstatus(2,0);
        geoTRD->SetSMstatus(3,0);
        geoTRD->SetSMstatus(4,0);
        geoTRD->SetSMstatus(5,0);
        geoTRD->SetSMstatus(6,0);
        geoTRD->SetSMstatus(7,0);
        geoTRD->SetSMstatus(10,0);
        geoTRD->SetSMstatus(11,0);
        geoTRD->SetSMstatus(12,0);
        geoTRD->SetSMstatus(13,0);
        geoTRD->SetSMstatus(14,0);
        geoTRD->SetSMstatus(15,0);
        geoTRD->SetSMstatus(16,0);
    }

    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");
    }

    if (iPHOS)
    {
        //=================== PHOS parameters ===========================

        AliPHOS *PHOS = new AliPHOSv1("PHOS", "IHEP");
        //Set simulation parameters different from the default ones.
        AliPHOSSimParam* simEmc = AliPHOSSimParam::GetInstance() ;
  
        // APD noise of warm (+20C) PHOS:
        // a2 = a1*(Y1/Y2)*(M1/M2), where a1 = 0.012 is APD noise at -25C,
        // Y1 = 4.3 photo-electrons/MeV, Y2 = 1.7 p.e/MeV - light yields at -25C and +20C,
        // M1 = 50, M2 = 50 - APD gain factors chosen for t1 = -25C and t2 = +20C,
        // Y = MeanLightYield*APDEfficiency.

        Float_t apdNoise = 0.012*2.5; 
        simEmc->SetAPDNoise(apdNoise);

        //Raw Light Yield at +20C
        simEmc->SetMeanLightYield(18800);

        //ADC channel width at +18C.
        simEmc->SetADCchannelW(0.0125);
    }


    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", "SHISH_77_TRD1_2X2_FINAL_110DEG");
    }

     if (iACORDE)
    {
        //=================== ACORDE parameters ============================

        AliACORDE *ACORDE = new AliACORDEv1("ACORDE", "normal ACORDE");
    }

     if (iVZERO)
    {
        //=================== ACORDE parameters ============================

        AliVZERO *VZERO = new AliVZEROv7("VZERO", "normal VZERO");
    }
}
Ejemplo n.º 2
0
void Config()
{
    

  // Get settings from environment variables
  ProcessEnvironmentVars();

  gRandom->SetSeed(seed);
  cerr<<"Seed for random number generation= "<<seed<<endl; 

  // Libraries required by geant321
#if defined(__CINT__)
  gSystem->Load("liblhapdf");      // Parton density functions
  gSystem->Load("libEGPythia6");   // TGenerator interface
  if (proc == kPythia6 || proc == kPhojet || proc == kDpmjet) {
    gSystem->Load("libpythia6");        // Pythia 6.2
    gSystem->Load("libAliPythia6");     // ALICE specific implementations
  } else if (proc != kHydjet) {
    gSystem->Load("libpythia6.4.21");   // Pythia 6.4
    gSystem->Load("libAliPythia6");     // ALICE specific implementations	
  }

  if (proc == kHijing || proc == kHijing2000 || proc == kHijing2000HF) {
	  gSystem->Load("libhijing");	
  	  gSystem->Load("libTHijing");
  } else if (proc == kHydjet)  {
	  gSystem->Load("libTUHKMgen");
  } else if (proc == kDpmjet) {
	  gSystem->Load("libdpmjet");
          gSystem->Load("libTDPMjet");
  }

  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);
  // gAlice->SetGeometryFromFile("geometry.root");
  // gAlice->SetGeometryFromCDB();
  
    // Set the trigger configuration
    AliSimulation::Instance()->SetTriggerConfig(pprTrigConfName[strig]);
    cout<<"Trigger configuration is set to  "<<pprTrigConfName[strig]<<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); 



    // RANDOM SELECTION OF ONE OF THE SIX GENERATION TYPES
    //
    Int_t typeHF = -1;
    Float_t randHF = gRandom->Rndm();
    if(randHF<0.2) {
      typeHF=0;
    } else if (randHF>=0.2 && randHF<0.4) {
      typeHF=1;
    } else if (randHF>=0.4 && randHF<0.6) {
      typeHF=2;
    } else if (randHF>=0.6 && randHF<0.8) {
      typeHF=3;
    } else if (randHF>=0.8 && randHF<0.9) {
      typeHF=4;
    } else {
      typeHF=5;
    }

    //======================//
    // Set External decayer //
    //======================//
    if (proc != kHydjet) {
      TVirtualMCDecayer* decayer = new AliDecayerPythia();
      if(proc == kHijing2000HF && (typeHF==0 || typeHF==1)) {
	decayer->SetForceDecay(kHadronicD);
      } else {
	decayer->SetForceDecay(kAll);
      }
      decayer->Init();
      gMC->SetExternalDecayer(decayer);  
    }

  //=========================//
  // Generator Configuration //
  //=========================//
  AliGenerator* gener = 0x0;
  
  if (proc == kPythia6) {
      gener = MbPythia();
  } else if (proc == kPythia6D6T) {
      gener = MbPythiaTuneD6T();
  } else if (proc == kPythia6ATLAS) {
      gener = MbPythiaTuneATLAS();
  } else if (proc == kPythiaPerugia0) {
      gener = MbPythiaTunePerugia0();
  } else if (proc == kPythia6ATLAS_Flat) {
      gener = MbPythiaTuneATLAS_Flat();
  } else if (proc == kPhojet) {
      gener = MbPhojet();
  } else if (proc == kHijing) {
      gener = Hijing();	
  } else if (proc == kHijing2000) {
      gener = Hijing2000();	
  } else if (proc == kHijing2000HF) {
      gener = Hijing2000HF(typeHF);	
  } else if (proc == kHydjet) {
      gener = Hydjet();	
  } else if (proc == kDpmjet) {
      gener = Dpmjet();	
  }
  
  
  //
  //
  // Size of the interaction diamond
  // Longitudinal
  Float_t sigmaz  = 5.4 / TMath::Sqrt(2.); // [cm]
  
  //
  // Transverse
  Float_t betast  = 3.5;                      // beta* [m]
  Float_t eps     = 3.75e-6;                   // emittance [m]
  Float_t gamma   = energy / 2.0 / 0.938272;  // relativistic gamma [1]
  Float_t sigmaxy = TMath::Sqrt(eps * betast / gamma) / TMath::Sqrt(2.) * 100.;  // [cm]

  printf("\n \n Diamond size x-y: %10.3e z: %10.3e\n \n", sigmaxy, sigmaz);
    
  gener->SetSigma(sigmaxy, sigmaxy, sigmaz);      // Sigma in (X,Y,Z) (cm) on IP position
  gener->SetVertexSmear(kPerEvent);
  gener->Init();

  printf("\n \n Comment: %s \n \n", comment.Data());

   //	
   // FIELD
   //

  TGeoGlobalMagField::Instance()->SetField(new AliMagF("Maps","Maps", -1., -1., AliMagF::k5kG,
     	   	AliMagF::kBeamTypeAA, 1380.));


  rl->CdGAFile();
  
  Int_t iABSO  = 1;
  Int_t iACORDE= 0;
  Int_t iDIPO  = 1;
  Int_t iEMCAL = 1;
  Int_t iFMD   = 1;
  Int_t iFRAME = 1;
  Int_t iHALL  = 1;
  Int_t iITS   = 1;
  Int_t iMAG   = 1;
  Int_t iMUON  = 1;
  Int_t iPHOS  = 1;
  Int_t iPIPE  = 1;
  Int_t iPMD   = 1;
  Int_t iHMPID = 1;
  Int_t iSHIL  = 1;
  Int_t iT0    = 1;
  Int_t iTOF   = 1;
  Int_t iTPC   = 1;
  Int_t iTRD   = 1;
  Int_t iVZERO = 1;
  Int_t iZDC   = 1;
  

    //=================== 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 AliABSOv3("ABSO", "Muon Absorber");
    }

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

        AliDIPO *DIPO = new AliDIPOv3("DIPO", "Dipole version 3");
    }

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

        AliHALL *HALL = new AliHALLv3("HALL", "Alice Hall");
    }


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

        AliFRAMEv2 *FRAME = new AliFRAMEv2("FRAME", "Space Frame");
	FRAME->SetHoles(1);
    }

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

        AliSHIL *SHIL = new AliSHILv3("SHIL", "Shielding Version 3");
    }


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

        AliPIPE *PIPE = new AliPIPEv3("PIPE", "Beam Pipe");
    }
 
    if (iITS)
    {
        //=================== ITS parameters ============================

	AliITS *ITS  = new AliITSv11Hybrid("ITS","ITS v11Hybrid");
    }

    if (iTPC)
    {
      //============================ TPC parameters =====================

        AliTPC *TPC = new AliTPCv2("TPC", "Default");
    }


    if (iTOF) {
        //=================== TOF parameters ============================

	AliTOF *TOF = new AliTOFv6T0("TOF", "normal TOF");
    }


    if (iHMPID)
    {
        //=================== HMPID parameters ===========================

        AliHMPID *HMPID = new AliHMPIDv3("HMPID", "normal HMPID");

    }


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

        AliZDC *ZDC = new AliZDCv3("ZDC", "normal ZDC");
	ZDC->SetSpectatorsTrack();	
        ZDC->SetLumiLength(0.);
    }

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

        AliTRD *TRD = new AliTRDv1("TRD", "TRD slow simulator");
        AliTRDgeometry *geoTRD = TRD->GetGeometry();
	// Partial geometry: modules at 0,1,7,8,9,16,17
	// starting at 3h in positive direction
	geoTRD->SetSMstatus(2,0);
	geoTRD->SetSMstatus(3,0);
	geoTRD->SetSMstatus(4,0);
        geoTRD->SetSMstatus(5,0);
	geoTRD->SetSMstatus(6,0);
        geoTRD->SetSMstatus(11,0);
        geoTRD->SetSMstatus(12,0);
        geoTRD->SetSMstatus(13,0);
        geoTRD->SetSMstatus(14,0);
        geoTRD->SetSMstatus(15,0);
        geoTRD->SetSMstatus(16,0);
    }

    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");
	// activate trigger efficiency by cells
	MUON->SetTriggerEffCells(1); // not needed if raw masks 
    }

    if (iPHOS)
    {
        //=================== PHOS parameters ===========================

     AliPHOS *PHOS = new AliPHOSv1("PHOS", "noCPV_Modules123");

    }


    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_FIRSTYEAR");
    }

     if (iACORDE)
    {
        //=================== ACORDE parameters ============================

        AliACORDE *ACORDE = new AliACORDEv1("ACORDE", "normal ACORDE");
    }

     if (iVZERO)
    {
        //=================== ACORDE parameters ============================

        AliVZERO *VZERO = new AliVZEROv7("VZERO", "normal VZERO");
    }
}
Ejemplo n.º 3
0
Archivo: gen.C Proyecto: ktf/AliRoot
void gen(Int_t nev = 1, char* filename = "galice.root")
{
  // Load libraries
  // gSystem->SetIncludePath("-I$ROOTSYS/include -I$ALICE_ROOT/include -I$ALICE_ROOT");
  gSystem->Load("liblhapdf");      // Parton density functions
  gSystem->Load("libEGPythia6");   // TGenerator interface
  gSystem->Load("libpythia6");     // Pythia
  gSystem->Load("libAliPythia6");  // ALICE specific implementations

  AliPDG::AddParticlesToPdgDataBase();
  TDatabasePDG::Instance();

  // Run loader
  AliRunLoader* rl = AliRunLoader::Open("galice.root","FASTRUN","recreate");
  
  rl->SetCompressionLevel(2);
  rl->SetNumberOfEventsPerFile(nev);
  rl->LoadKinematics("RECREATE");
  rl->MakeTree("E");
  gAlice->SetRunLoader(rl);
  
  //  Create stack
  rl->MakeStack();
  AliStack* stack = rl->Stack();
  
  //  Header
  AliHeader* header = rl->GetHeader();
  
  //  Create and Initialize Generator
  gROOT->LoadMacro("$ALICE_ROOT/test/vmctest/gun/genGunConfig.C");
  AliGenerator* gener = genGunConfig();

  // Go to galice.root
  rl->CdGAFile();

  // Forbid some decays. Do it after gener->Init(0, because
  // the initialization of the generator includes reading of the decay table.
  // ...

  //
  // Event Loop
  //
  
  TStopwatch timer;
  timer.Start();
  for (Int_t iev = 0; iev < nev; iev++) {
    
    cout <<"Event number "<< iev << endl;
    
    // Initialize event
    header->Reset(0,iev);
    rl->SetEventNumber(iev);
    stack->Reset();
    rl->MakeTree("K");
    
    // Generate event
    stack->Reset();
    stack->ConnectTree(rl->TreeK());
    gener->Generate();
    cout << "Number of particles " << stack->GetNprimary() << endl;
    
    // Finish event
    header->SetNprimary(stack->GetNprimary());
    header->SetNtrack(stack->GetNtrack());  
    
    // I/O
    stack->FinishEvent();
    header->SetStack(stack);
    rl->TreeE()->Fill();
    rl->WriteKinematics("OVERWRITE");
    
  } // event loop
  timer.Stop();
  timer.Print();
  
  //                         Termination
  //  Generator
  gener->FinishRun();
  //  Write file
  rl->WriteHeader("OVERWRITE");
  gener->Write();
  rl->Write();
}
Ejemplo n.º 4
0
void Config()
{
    

  // Get settings from environment variables
  ProcessEnvironmentVars();

  gRandom->SetSeed(seed);
  cerr<<"Seed for random number generation= "<<seed<<endl; 

  // Libraries required by geant321
#if defined(__CINT__)
  gSystem->Load("liblhapdf");      // Parton density functions
  gSystem->Load("libEGPythia6");   // TGenerator interface
  if (proc == kPythia6 || proc == kPhojet) {
    gSystem->Load("libpythia6");        // Pythia 6.2
  } else {
    gSystem->Load("libpythia6.4.21");   // Pythia 6.4
  }
  gSystem->Load("libAliPythia6");  // ALICE specific implementations
  // 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);
  // gAlice->SetGeometryFromFile("geometry.root");
  // gAlice->SetGeometryFromCDB();
  
  // Set the trigger configuration: proton-proton

  AliSimulation::Instance()->SetTriggerConfig(pprTrigConfName[strig]);
  cout <<"Trigger configuration is set to  "<<pprTrigConfName[strig]<<endl;


  rl->CdGAFile();
  
  Int_t iABSO  = 1;
  Int_t iACORDE= 0;
  Int_t iDIPO  = 1;
  Int_t iEMCAL = 1;
  Int_t iFMD   = 1;
  Int_t iFRAME = 1;
  Int_t iHALL  = 1;
  Int_t iITS   = 1;
  Int_t iMAG   = 1;
  Int_t iMUON  = 1;
  Int_t iPHOS  = 1;
  Int_t iPIPE  = 1;
  Int_t iPMD   = 1;
  Int_t iHMPID = 1;
  Int_t iSHIL  = 1;
  Int_t iT0    = 1;
  Int_t iTOF   = 1;
  Int_t iTPC   = 1;
  Int_t iTRD   = 1;
  Int_t iVZERO = 1;
  Int_t iZDC   = 1;
  

  //=================== 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 AliABSOv3("ABSO", "Muon Absorber");
    }

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

      AliDIPO *DIPO = new AliDIPOv3("DIPO", "Dipole version 3");
    }

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

      AliHALL *HALL = new AliHALLv3("HALL", "Alice Hall");
    }


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

      AliFRAMEv2 *FRAME = new AliFRAMEv2("FRAME", "Space Frame");
      FRAME->SetHoles(1);
    }

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

      AliSHIL *SHIL = new AliSHILv3("SHIL", "Shielding Version 3");
    }


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

      AliPIPE *PIPE = new AliPIPEv3("PIPE", "Beam Pipe");
    }
 
  if (iITS)
    {
      //=================== ITS parameters ============================

      AliITS *ITS  = new AliITSv11("ITS","ITS v11");
    }

  if (iTPC)
    {
      //============================ TPC parameters =====================

      AliTPC *TPC = new AliTPCv2("TPC", "Default");
      TPC->SetPrimaryIonisation();// not used with Geant3
    }


  if (iTOF) {
    //=================== TOF parameters ============================

    AliTOF *TOF = new AliTOFv6T0("TOF", "normal TOF");
  }


  if (iHMPID)
    {
      //=================== HMPID parameters ===========================

      AliHMPID *HMPID = new AliHMPIDv3("HMPID", "normal HMPID");

    }


  if (iZDC)
    {
      //=================== ZDC parameters ============================
	
      AliZDC *ZDC = new AliZDCv4("ZDC", "normal ZDC");
      //Collimators aperture
      ZDC->SetVCollSideCAperture(0.85);
      ZDC->SetVCollSideCCentre(0.);
      ZDC->SetVCollSideAAperture(0.75);
      ZDC->SetVCollSideACentre(0.);
      //Detector position
      ZDC->SetYZNC(1.6);
      ZDC->SetYZNA(1.6);
      ZDC->SetYZPC(1.6);
      ZDC->SetYZPA(1.6);
    }

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

      AliTRD *TRD = new AliTRDv1("TRD", "TRD slow simulator");
      AliTRDgeometry *geoTRD = TRD->GetGeometry();
      // Partial geometry: modules at 0,1,7,8,9,16,17
      // starting at 3h in positive direction
      geoTRD->SetSMstatus(2,0);
      geoTRD->SetSMstatus(3,0);
      geoTRD->SetSMstatus(4,0);
      geoTRD->SetSMstatus(5,0);
      geoTRD->SetSMstatus(6,0);
      geoTRD->SetSMstatus(11,0);
      geoTRD->SetSMstatus(12,0);
      geoTRD->SetSMstatus(13,0);
      geoTRD->SetSMstatus(14,0);
      geoTRD->SetSMstatus(15,0);
      geoTRD->SetSMstatus(16,0);
    }

  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");
      // activate trigger efficiency by cells
      MUON->SetTriggerEffCells(1);
    }

  if (iPHOS)
    {
      //=================== PHOS parameters ===========================

      AliPHOS *PHOS = new AliPHOSv1("PHOS", "noCPV_Modules123");

    }


  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_FIRSTYEARV1");
    }

  if (iACORDE)
    {
      //=================== ACORDE parameters ============================

      AliACORDE *ACORDE = new AliACORDEv1("ACORDE", "normal ACORDE");
    }

  if (iVZERO)
    {
      //=================== ACORDE parameters ============================

      AliVZERO *VZERO = new AliVZEROv7("VZERO", "normal VZERO");
    }



  // Load Geant4 + Geant4 VMC libraries
  //
  std::string g4libmacro("$G4VMCINSTALL/share/examples/macro/g4libs.C");
  if (gClassTable->GetID("TGeant4") == -1) {
    // Load Geant4 libraries
    if (!gInterpreter->IsLoaded(g4libmacro.c_str())) {
      gROOT->LoadMacro(g4libmacro.c_str());
      gInterpreter->ProcessLine("g4libs()");
    }
  }


  // Create Geant4 VMC
  //  
  TGeant4 *geant4 = 0;
  if ( ! gMC ) {
    TG4RunConfiguration* runConfiguration=0x0;
    for (Int_t iList = 0; iList < kListMax; iList++) {
      if(iList<kListMax/2){
	if(physicslist == iList){
	  runConfiguration = 
	    new TG4RunConfiguration("geomRoot", 
				    physicsListName[iList], 
				    "specialCuts+stackPopper+stepLimiter",
				    true);
	}
      }
      else if(iList>=kListMax/2){//add "optical" PL to HadronPhysicsList
	if(physicslist == iList){
	  runConfiguration = 
	    new TG4RunConfiguration("geomRoot", 
				    Form("%s+optical",physicsListName[iList-kListMax/2]), 
				    "specialCuts+stackPopper+stepLimiter",
				    true);
	}
      }
    }
    geant4 = new TGeant4("TGeant4", "The Geant4 Monte Carlo", runConfiguration);
    cout << "Geant4 has been created." << endl;
  } 
  else {
    cout << "Monte Carlo has been already created." << endl;
  }  
  
  
  
  // Customization of Geant4 VMC
  //
  geant4->ProcessGeantCommand("/mcVerbose/all 1");  
  geant4->ProcessGeantCommand("/mcVerbose/geometryManager 1");  
  geant4->ProcessGeantCommand("/mcVerbose/opGeometryManager 1");  
  geant4->ProcessGeantCommand("/mcTracking/loopVerbose 1");     
  geant4->ProcessGeantCommand("/mcPhysics/rangeCuts 0.01 mm"); 
  // for Geant4 <= 9.4.p03
  //geant4->ProcessGeantCommand("/mcPhysics/selectOpProcess Scintillation");
  //geant4->ProcessGeantCommand("/mcPhysics/setOpProcessActivation false");
  // for Geant4 >= 9.5
  geant4->ProcessGeantCommand("/optics_engine/selectOpProcess Scintillation");
  geant4->ProcessGeantCommand("/optics_engine/setOpProcessUse false");
  geant4->ProcessGeantCommand("/optics_engine/selectOpProcess OpWLS");
  geant4->ProcessGeantCommand("/optics_engine/setOpProcessUse false");
  geant4->ProcessGeantCommand("/optics_engine/selectOpProcess OpMieHG");
  geant4->ProcessGeantCommand("/optics_engine/setOpProcessUse false");
  
  geant4->ProcessGeantCommand("/mcVerbose/composedPhysicsList 2");  
  geant4->ProcessGeantCommand("/mcTracking/skipNeutrino true");
  // geant4->ProcessGeantCommand("/mcDet/setMaxStepInLowDensityMaterials 1 cm");


  //
  //=======================================================================
  // ************* 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); 




  //======================//
  // Set External decayer //
  //======================//
  TVirtualMCDecayer* decayer = new AliDecayerPythia();
  decayer->SetForceDecay(kAll);
  decayer->Init();
  gMC->SetExternalDecayer(decayer);

  //=========================//
  // Generator Configuration //
  //=========================//
  AliGenerator* gener = 0x0;
  
  if (proc == kPythia6) {
    gener = MbPythia();
  } else if (proc == kPythia6D6T) {
    gener = MbPythiaTuneD6T();
  } else if (proc == kPythia6ATLAS) {
    gener = MbPythiaTuneATLAS();
  } else if (proc == kPythiaPerugia0) {
    gener = MbPythiaTunePerugia0();
  } else if (proc == kPythia6ATLAS_Flat) {
    gener = MbPythiaTuneATLAS_Flat();
  } else if (proc == kPhojet) {
    gener = MbPhojet();
  }
  
  
  //
  //
  // Size of the interaction diamond
  // Longitudinal
  Float_t sigmaz  = 5.4 / TMath::Sqrt(2.); // [cm]
  if (energy == 900)
    //sigmaz  = 10.5 / TMath::Sqrt(2.); // [cm]
    //sigmaz = 3.7;
    if (energy == 7000)
      sigmaz  = 6.3 / TMath::Sqrt(2.); // [cm]
  
  //
  // Transverse

  // beta*
  Float_t betast                  = 10.0;  // beta* [m]
  if (runNumber >= 117048) betast =  2.0;
  if (runNumber >  122375) betast =  3.5;  // starting with fill 1179
  //	
  //
  Float_t eps     = 5.0e-6;            // emittance [m]
  Float_t gamma   = energy / 2.0 / 0.938272;  // relativistic gamma [1]
  Float_t sigmaxy = TMath::Sqrt(eps * betast / gamma) / TMath::Sqrt(2.) * 100.;  // [cm]
  printf("\n \n Diamond size x-y: %10.3e z: %10.3e\n \n", sigmaxy, sigmaz);
    
  gener->SetSigma(sigmaxy, sigmaxy, sigmaz);      // Sigma in (X,Y,Z) (cm) on IP position
  gener->SetVertexSmear(kPerEvent);
  gener->Init();

  printf("\n \n Comment: %s \n \n", comment.Data());


}
Ejemplo n.º 5
0
void Config() {

  //  AliLog::SetClassDebugLevel("AliMFT", 1);

  LoadLibs();

  new TGeant3TGeo("C++ Interface to Geant3");

  // Create the output file

  AliRunLoader* rl=0x0;

  printf("Config.C: Creating Run Loader ...");
  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);

  // ************* 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); 
  
  TVirtualMCDecayer *decayer = new AliDecayerPythia();
  decayer->SetForceDecay(kAll);
  decayer->Init();
  gMC->SetExternalDecayer(decayer);
  
  // Generator
  AliGenerator* gener = 0x0;
  if (proc == kPythia6)                        gener = MbPythia(); 
  else if (proc == kPythiaPerugia0)            gener = MbPythiaTunePerugia0();
  else if (proc == kHijing)                    gener = Hijing();	
  else if (proc == kHijing2500)                gener = Hijing2500();	
  else if (proc == kHijing2500Cocktail)        gener = Hijing2500Cocktail();
  else if (proc == kGenBox)                    gener = GenBox();
  else if (proc == kGenMuonLMR)                gener = GenMuonLMR();
  else if (proc == kGenParamJpsi)              gener = GenParamJpsi();
  else if (proc == kGenCorrHF)                 gener = GenCorrHF();
  else if (proc == kGenPionKaon)               gener = GenParamPionKaon();
  else if (proc == kPythiaPerugia0BtoJpsi2mu)  gener = MbPythiaTunePerugia0BtoJpsi2mu();
  else if (proc == kCocktailSignals)           gener = CocktailSignals();

  // Size of the interaction diamond
  Float_t sigmaz  = 5.4 / TMath::Sqrt(2.);     // [cm]
  Float_t betast  = 3.5;                       // beta* [m]
  Float_t eps     = 3.75e-6;                   // emittance [m]
  Float_t gamma   = energy / 2.0 / 0.938272;   // relativistic gamma [1]
  Float_t sigmaxy = TMath::Sqrt(eps * betast / gamma) / TMath::Sqrt(2.) * 100.;  // [cm]

  printf("\n \n Diamond size x-y: %10.3e z: %10.3e\n \n", sigmaxy, sigmaz);
    
  gener->SetOrigin(0,0,0);
  gener->SetSigma(sigmaxy, sigmaxy, sigmaz);      // Sigma in (X,Y,Z) (cm) on IP position
  gener->SetVertexSmear(kPerEvent);
  gener->Init();

  printf("\n \n Comment: %s \n \n", comment.Data());

  //  TGeoGlobalMagField::Instance()->SetField(new AliMagF("Maps","Maps", -1., -1., AliMagF::k5kG, AliMagF::kBeamTypeAA, 2750.));
  TGeoGlobalMagField::Instance()->SetField(new AliMagF("Maps","Maps", -1., -1., AliMagF::k5kG, AliMagF::kBeamTypepp, 7000.));

  rl->CdGAFile();
  
  // Detector Setup

  Int_t iABSO  = 1;
  Int_t iDIPO  = 1;
  Int_t iHALL  = 1;
  Int_t iMUON  = 1;
  Int_t iPIPE  = 1;
  Int_t iSHIL  = 1;
  Int_t iT0    = 0;
  Int_t iVZERO = 1;
  Int_t iMFT   = 1;
  Int_t iACORDE= 0;
  Int_t iEMCAL = 0;
  Int_t iFMD   = 0;
  Int_t iFRAME = 0;
  Int_t iITS   = 0;
  Int_t iMAG   = 1;
  Int_t iPHOS  = 0;
  Int_t iPMD   = 0;
  Int_t iHMPID = 0;
  Int_t iTOF   = 0;
  Int_t iTPC   = 0;
  Int_t iTRD   = 0;
  Int_t iZDC   = 0;
  

  AliBODY *BODY = new AliBODY("BODY", "Alice envelop");

  if (iMAG)       AliMAG    *MAG    = new AliMAG("MAG", "Magnet");
  if (iABSO)      AliABSO   *ABSO   = new AliABSOv3("ABSO", "Muon Absorber");
  if (iDIPO)      AliDIPO   *DIPO   = new AliDIPOv3("DIPO", "Dipole version 3");
  if (iHALL)      AliHALL   *HALL   = new AliHALLv3("HALL", "Alice Hall");
  if (iSHIL)      AliSHIL   *SHIL   = new AliSHILv3("SHIL", "Shielding Version 3");
  if (iITS)       gROOT->ProcessLine(".x $ALICE_ROOT/ITS/UPGRADE/testITSU/CreateITSU.C");
  if (iTPC)       AliTPC    *TPC    = new AliTPCv2("TPC", "Default");
  if (iTOF)       AliTOF    *TOF    = new AliTOFv6T0("TOF", "normal TOF");
  if (iHMPID)     AliHMPID  *HMPID  = new AliHMPIDv3("HMPID", "normal HMPID");
  if (iFMD)       AliFMD    *FMD    = new AliFMDv1("FMD", "normal FMD");
  if (iPHOS)      AliPHOS   *PHOS   = new AliPHOSv1("PHOS", "noCPV_Modules123");
  if (iPMD)       AliPMD    *PMD    = new AliPMDv1("PMD", "normal PMD");
  if (iT0)        AliT0     *T0     = new AliT0v1("T0", "T0 Detector");
  if (iEMCAL)     AliEMCAL  *EMCAL  = new AliEMCALv2("EMCAL", "EMCAL_FIRSTYEARV1");
  if (iACORDE)    AliACORDE *ACORDE = new AliACORDEv1("ACORDE", "normal ACORDE");
  if (iVZERO)     AliVZERO  *VZERO  = new AliVZEROv7("VZERO", "normal VZERO");
  if (iFRAME) {
    AliFRAMEv2 *FRAME = new AliFRAMEv2("FRAME", "Space Frame");
    FRAME->SetHoles(1);
  }
  if (iPIPE) {
    //    AliPIPE *PIPE = new AliPIPEv3("PIPE", "Beam Pipe");
    AliPIPE *PIPE = new AliPIPEv4("PIPE", "Beam Pipe");
  }
  if (iZDC) {
    AliZDC *ZDC = new AliZDCv3("ZDC", "normal ZDC");
    ZDC->SetSpectatorsTrack();	
    ZDC->SetLumiLength(0.);
  }
  if (iTRD) {
    AliTRD *TRD = new AliTRDv1("TRD", "TRD slow simulator");
  }
  if (iMUON) {
    AliMUON *MUON = new AliMUONv1("MUON", "default");
    MUON->SetTriggerEffCells(1); // not needed if raw masks 
    Char_t* digitstore="AliMUONDigitStoreV2S";    
    MUON->SetDigitStoreClassName(digitstore);
  }
  if (iMFT) {
    AliMFT *MFT = new AliMFT("MFT", "normal MFT");
  }

  TIter next(gAlice->Modules());
  AliModule *detector;
  printf("gAlice->Modules:\n");
  while((detector = (AliModule*)next())) printf("%s\n",detector->GetName());

}
Ejemplo n.º 6
0
void fastGen(Tune_t tune = kPyTuneCDFA , Float_t energy, Int_t nev = 1, TString process)
{
  // Add all particles to the PDG database
  AliPDG::AddParticlesToPdgDataBase();

  // set the random seed
  TDatime date;
  UInt_t seed    = date.Get()+gSystem->GetPid();
  gRandom->SetSeed(seed);
  cout<<"Seed for random number generation= "<<seed<<endl; 


  //  Runloader  
  AliRunLoader* rl = AliRunLoader::Open("galice.root", "FASTRUN","recreate");
    
  rl->SetCompressionLevel(2);
  rl->SetNumberOfEventsPerFile(nev);
  rl->LoadKinematics("RECREATE");
  rl->MakeTree("E");
  gAlice->SetRunLoader(rl);

  //  Create stack
  rl->MakeStack();
  AliStack* stack      = rl->Stack();
 
  //  Header
  AliHeader* header = rl->GetHeader();
  //
  //  Create and Initialize Generator
  AliGenerator *gener = CreateGenerator(tune,energy);
  gener->Init();
  // if nsd switch off single diffraction
  if ( process == "NSD"){
    if(tune != kPhojet) {
      AliPythia::Instance()->	SetMSUB(92,0);             // single diffraction AB-->XB
      AliPythia::Instance()-> SetMSUB(93,0);             // single diffraction AB-->AX
    }
    else {
      cout << "NSD not yet implemented in the phojet case" << endl;
      exit(1);
    }
  }
  gener->SetStack(stack);
    
  //
  //                        Event Loop
  //
  Int_t iev;
     
  for (iev = 0; iev < nev; iev++) {

    if(!(iev%500)) printf("\n \n Event number %d \n \n", iev);
	
    //  Initialize event
    header->Reset(0,iev);
    rl->SetEventNumber(iev);
    stack->Reset();
    rl->MakeTree("K");
    //	stack->ConnectTree();
    
    //  Generate event
    gener->Generate();
    //  Analysis
    // 	Int_t npart = stack->GetNprimary();
    // 	printf("Analyse %d Particles\n", npart);
    // 	for (Int_t part=0; part<npart; part++) {
    // 	    TParticle *MPart = stack->Particle(part);
    // 	    Int_t mpart  = MPart->GetPdgCode();
    // 	    printf("Particle %d\n", mpart);
    // 	}
	
    //  Finish event
    header->SetNprimary(stack->GetNprimary());
    header->SetNtrack(stack->GetNtrack());  
    //      I/O
    //	
    stack->FinishEvent();
    header->SetStack(stack);
    rl->TreeE()->Fill();
    rl->WriteKinematics("OVERWRITE");

  } // event loop
    //
    //                         Termination
    //  Generator
  gener->FinishRun();
  //  Write file
  rl->WriteHeader("OVERWRITE");
  gener->Write();
  rl->Write();
    
}