Beispiel #1
0
AliGenerator* Hijing()
{
    AliGenHijing *gener = new AliGenHijing(-1);
// centre of mass energy 
    gener->SetEnergyCMS(2760.);
    gener->SetImpactParameterRange(bMin, bMax);	
// reference frame
    gener->SetReferenceFrame("CMS");
// projectile
     gener->SetProjectile("A", 208, 82);
     gener->SetTarget    ("A", 208, 82);
// tell hijing to keep the full parent child chain
     gener->KeepFullEvent();
// enable jet quenching
     gener->SetJetQuenching(1);
// enable shadowing
     gener->SetShadowing(1);
// neutral pion and heavy particle decays switched off
     gener->SetDecaysOff(1);
// Don't track spectators
     gener->SetSpectators(0);
// kinematic selection
     gener->SetSelectAll(0);
     return gener;
}
void createGlauberTree(Int_t nEvents,
                       const char *outFileName) 
{
  AliPDG::AddParticlesToPdgDataBase();
  TDatabasePDG::Instance();

  // Run loader
  TFolder *folder = new TFolder("myfolder","myfolder");
  AliRunLoader* rl = new AliRunLoader(folder);
  rl->MakeHeader();
  rl->MakeStack();
  AliStack* stack = rl->Stack();
  //AliHeader* rheader = rl->GetHeader();

  AliGenHijing *genHi = new AliGenHijing(-1);
  genHi->SetStack(stack);
  genHi->SetEnergyCMS(2760);
  genHi->SetReferenceFrame("CMS");
  genHi->SetProjectile("A", 208, 82);
  genHi->SetTarget    ("A", 208, 82);
  genHi->SetPtHardMin (2.3);
  genHi->SetImpactParameterRange(0.,30);
  genHi->SetJetQuenching(0); // enable jet quenching
  genHi->SetShadowing(1);    // enable shadowing
  genHi->SetDecaysOff(1);    // neutral pion and heavy particle decays switched off
  genHi->Init();

  MyHeader  *myheader = new MyHeader;
  MyResponse *myresp  = new MyResponse;

  TFile *outFile = TFile::Open(outFileName, "RECREATE");
  outFile->SetCompressionLevel(5);
  TDirectory::TContext context(outFile);

  TTree *tree = new TTree("glaubertree", "Glauber tree");
  tree->Branch("header",&myheader, 32*1024, 99);
  tree->Branch("response",&myresp, 32*1024, 99);

  TNtuple *ntuple = new TNtuple("gnt", "Glauber ntuple", "npart:ncoll:b");

  Double_t etas[] = {-10,-5,-4,-3,-2,-1,0,1,2,3,4,5,10};
  TH1D *hNEta = new TH1D("hNeta","",12,etas);
  TH1D *hEtEta = new TH1D("hEteta","",12,etas);

  // create events and fill them
  for (Int_t iEvent = 0; iEvent < nEvents; ++iEvent) {

    cout << "Event " << iEvent+1 << "/" << nEvents << endl;;
    stack->Reset();
    hNEta->Reset();
    hEtEta->Reset();
    genHi->Generate();
  
    AliStack *s = genHi->GetStack();
    const TObjArray *parts = s->Particles();
    Int_t nents = parts->GetEntries();
    for (Int_t i = 0; i<nents; ++i) {
      TParticle *p = (TParticle*)parts->At(i);
      //p->Print();
      TParticlePDG *pdg = p->GetPDG(1);
      Int_t c = (Int_t)(TMath::Abs(pdg->Charge()));
      if (c!=0) {
        hNEta->Fill(p->Eta());
        hEtEta->Fill(p->Eta(),p->Pt());
      }
    }

    AliGenHijingEventHeader *h = (AliGenHijingEventHeader*)genHi->CollisionGeometry();
    myheader->fNATT = nents;
    myheader->fEATT = h->TotalEnergy();
    myheader->fJATT = h->HardScatters();
    myheader->fNT   = h->TargetParticipants();
    myheader->fNP   = h->ProjectileParticipants();
    myheader->fN00  = h->NwNw();
    myheader->fN01  = h->NwN();
    myheader->fN10  = h->NNw();
    myheader->fN11  = h->NN();
    myheader->fBB   = h->ImpactParameter();
    myheader->fRP   = h->ReactionPlaneAngle();
    myheader->fPSn  = h->ProjSpectatorsn();
    myheader->fPSp  = h->ProjSpectatorsp();
    myheader->fTSn  = h->TargSpectatorsn();
    myheader->fTSp  = h->TargSpectatorsn();

    myresp->fEtch0p = hEtEta->GetBinContent(hEtEta->FindBin(0.5));
    myresp->fEtch1p = hEtEta->GetBinContent(hEtEta->FindBin(1.5));
    myresp->fEtch2p = hEtEta->GetBinContent(hEtEta->FindBin(2.5));
    myresp->fEtch3p = hEtEta->GetBinContent(hEtEta->FindBin(3.5));
    myresp->fEtch4p = hEtEta->GetBinContent(hEtEta->FindBin(4.5));
    myresp->fEtch5p = hEtEta->GetBinContent(hEtEta->FindBin(5.5));
    myresp->fEtchrp = hEtEta->GetBinContent(hEtEta->FindBin(10.5));
    myresp->fEtch0n = hEtEta->GetBinContent(hEtEta->FindBin(-0.5));
    myresp->fEtch1n = hEtEta->GetBinContent(hEtEta->FindBin(-1.5));
    myresp->fEtch2n = hEtEta->GetBinContent(hEtEta->FindBin(-2.5));
    myresp->fEtch3n = hEtEta->GetBinContent(hEtEta->FindBin(-3.5));
    myresp->fEtch4n = hEtEta->GetBinContent(hEtEta->FindBin(-4.5));
    myresp->fEtch5n = hEtEta->GetBinContent(hEtEta->FindBin(-5.5));
    myresp->fEtchrn = hEtEta->GetBinContent(hEtEta->FindBin(-10.5));
    myresp->fNch0p  = hNEta->GetBinContent(hNEta->FindBin(0.5));
    myresp->fNch1p  = hNEta->GetBinContent(hNEta->FindBin(1.5));
    myresp->fNch2p  = hNEta->GetBinContent(hNEta->FindBin(2.5));
    myresp->fNch3p  = hNEta->GetBinContent(hNEta->FindBin(3.5));
    myresp->fNch4p  = hNEta->GetBinContent(hNEta->FindBin(4.5));
    myresp->fNch5p  = hNEta->GetBinContent(hNEta->FindBin(5.5));
    myresp->fNchrp  = hNEta->GetBinContent(hNEta->FindBin(10.5));
    myresp->fNch0n  = hNEta->GetBinContent(hNEta->FindBin(-0.5));
    myresp->fNch1n  = hNEta->GetBinContent(hNEta->FindBin(-1.5));
    myresp->fNch2n  = hNEta->GetBinContent(hNEta->FindBin(-2.5));
    myresp->fNch3n  = hNEta->GetBinContent(hNEta->FindBin(-3.5));
    myresp->fNch4n  = hNEta->GetBinContent(hNEta->FindBin(-4.5));
    myresp->fNch5n  = hNEta->GetBinContent(hNEta->FindBin(-5.5));
    myresp->fNchrn  = hNEta->GetBinContent(hNEta->FindBin(-10.5));

    tree->Fill();

    if (ntuple) {
      Int_t np = h->TargetParticipants() + h->ProjectileParticipants();
      Int_t nc = h->NwNw() + h->NwN() + h->NNw() + h->NN();
      Double_t b = h->ImpactParameter();
      ntuple->Fill(np,nc,b);
    }

  } // end of event loop

  tree->Write();
  ntuple->Write();
  outFile->Close();
}
Beispiel #3
0
void Config()
{
  // 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
  //gRandom->SetSeed(123456); // Set 0 to use the current time

  AliLog::Message(AliLog::kInfo, Form("Seed for random number generation = %d",gRandom->GetSeed()), "Config.C", "Config.C", "Config()","Config.C", __LINE__);

  // Get settings from environment variables
  ProcessEnvironmentVars();

  // Load Pythia libraries
  LoadPythia();
  // Libraries required by geant321
#if defined(__CINT__)
  gSystem->Load("libgeant321");
#endif

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

  // Output every 100 tracks
  ((TGeant3*)gMC)->SetSWIT(4,100);

  AliRunLoader* rl=0x0;

    AliLog::Message(AliLog::kInfo, "Creating Run Loader", "Config.C", "Config.C", "Config()"," Config.C", __LINE__);

    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(2);
    gAlice->SetRunLoader(rl);

    // gAlice->SetGeometryFromFile("geometry.root");

    // Uncomment if you want to load geometry from OCDB!   >>>>
/*
    if(!AliCDBManager::Instance()->IsDefaultStorageSet()){
	 cout << "#####################################################" << endl;
	 cout << "#                                                   #" << endl;
	 cout << "#     WARNING: CDB DEFAULT STORAGE NOT SET !!!      #" << endl;
	 cout << "#     SETTING IT TO local://$ALICE_ROOT !!!         #" << endl;
	 cout << "#                                                   #" << endl;
	 cout << "#####################################################" << endl;

         AliCDBManager::Instance()->SetDefaultStorage("local://$ALICE_ROOT");
    }

    if(AliCDBManager::Instance()->GetRun() < 0){
	 cout << "#####################################################" << endl;
	 cout << "#                                                   #" << endl;
	 cout << "#     WARNING: RUN NUMBER NOT SET !!!               #" << endl;
	 cout << "#     SETTING IT TO 0 !!!                           #" << endl;
	 cout << "#                                                   #" << endl;
	 cout << "#####################################################" << endl;

         AliCDBManager::Instance()->SetRun(0);
    }
    gAlice->SetGeometryFromCDB();
*/
    // Uncomment if you want to load geometry from OCDB!   <<<<

    // Set the trigger configuration
    gAlice->SetTriggerDescriptor(TrigConfName[trig]);
    cout<<"Trigger configuration is set to  "<<TrigConfName[trig]<<endl;


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

    decayer->SetForceDecay(kAll);
    decayer->Init();
    gMC->SetExternalDecayer(decayer);
    //=======================================================================
    // ************* 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);


    AliGenHijing *gener = new AliGenHijing(-1);
    // centre of mass energy
    gener->SetEnergyCMS(5500);
    // reference frame
    gener->SetReferenceFrame("CMS     ");
    // projectile
    gener->SetProjectile("A       ", 208, 82);
    gener->SetTarget    ("A       ", 208, 82);
    // impact parameter range
    gener->SetImpactParameterRange(bMin, bMax); // bMin = 0 - bMax = 3
    // evaluate cross section before run
    gener->SetEvaluate(0);
    // tell hijing to keep the full parent child chain
    gener->KeepFullEvent();
    // enable jet quenching
    gener->SetJetQuenching(quench); // 1
    // enable shadowing
    gener->SetShadowing(shad); // 1
    // neutral pion and heavy particle decays switched off
    gener->SetDecaysOff(1);
    // Don't track spectators
    gener->SetSpectators(0);
    // trigger
    //	gener->SetTrigger(0);
    // kinematic selection
    gener->SetSelectAll(0);
    // momentum range
    gener->SetMomentumRange(0,999);
    // No restriction on phi, theta
    Float_t thmin = EtaToTheta(etaMax); // Theta min <---> eta max 2.
    Float_t thmax = EtaToTheta(etaMin); // Theta max <---> eta min -2.
    gener->SetPhiRange(phiMin, phiMax); // 0 - 360
    //PH gener->SetThetaRange(thmin,thmax);
    // PRIMARY VERTEX
    gener->SetOrigin(0, 0, 0);  //vertex position
//    gener->SetSigma(0, 0, 5.3);   //Sigma in (X,Y,Z) (cm) on IP position
//    gener->SetCutVertexZ(3.);        // Truncate at 3 sigma
//    gener->SetVertexSmear(kPerEvent);

    // Size of the interaction diamond
    // Longitudinal
    Float_t sigmaz  = 7.55 / TMath::Sqrt(2.); // [cm]
    // Transverse
    Float_t betast  = 10;                 // beta* [m]
    Float_t eps     = 3.75e-6;            // emittance [m]
//    Float_t gamma   = 7000. / 0.938272;   // relativistic gamma [1]
    Float_t gamma   = 2750. / 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);

    //
    // Activate this line if you want the vertex smearing to happen
    // track by track
    //
    //gener->SetVertexSmear(perTrack);

    gener->Init();

    // Field (L3 0.5 T)
    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);
      AliMagWrapCheb * field = new AliMagWrapCheb("Maps","Maps", 2, 1., 10., AliMagWrapCheb::k5kG,kTRUE,"$(ALICE_ROOT)/data/maps/mfchebKGI_sym.root");
    }

    rl->CdGAFile();
    gAlice->SetField(field);    

    Int_t   iABSO   = 1;
    Int_t   iDIPO   = 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   iZDC    = 1;
    Int_t   iEMCAL  = 1;
    Int_t   iACORDE = 1;
    Int_t   iVZERO  = 1;
    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 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");
    }

    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_COMPLETE");
    }

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

     if (iVZERO)
    {
        //=================== VZERO parameters ============================
        AliVZERO *VZERO = new AliVZEROv7("VZERO", "normal VZERO");
    }

     AliLog::Message(AliLog::kInfo, "End of Config", "Config.C", "Config.C", "Config()"," Config.C", __LINE__);

}