5 // Author: S.Aiola, C.Loizides
7 #include "AliJetEmbeddingFromGenTask.h"
9 #include <TClonesArray.h>
11 #include <TLorentzVector.h>
12 #include <TParticle.h>
13 #include <TParticlePDG.h>
16 #include "AliAnalysisManager.h"
17 #include "AliEMCALDigit.h"
18 #include "AliEMCALGeometry.h"
19 #include "AliEMCALRecPoint.h"
20 #include "AliGenerator.h"
21 #include "AliHeader.h"
23 #include "AliPicoTrack.h"
25 #include "AliRunLoader.h"
28 #include "AliVCluster.h"
29 #include "AliVEvent.h"
30 #include "AliGenPythiaEventHeader.h"
32 ClassImp(AliJetEmbeddingFromGenTask)
34 //________________________________________________________________________
35 AliJetEmbeddingFromGenTask::AliJetEmbeddingFromGenTask() :
36 AliJetModelBaseTask("AliJetEmbeddingFromGenTask"),
43 // Default constructor.
44 SetSuffix("EmbeddedFromGen");
47 //________________________________________________________________________
48 AliJetEmbeddingFromGenTask::AliJetEmbeddingFromGenTask(const char *name, Bool_t drawqa) :
49 AliJetModelBaseTask(name,drawqa),
56 // Standard constructor.
57 SetSuffix("EmbeddedFromGen");
60 //________________________________________________________________________
61 AliJetEmbeddingFromGenTask::~AliJetEmbeddingFromGenTask()
66 //________________________________________________________________________
67 void AliJetEmbeddingFromGenTask::UserCreateOutputObjects()
69 // Create user output.
74 AliJetModelBaseTask::UserCreateOutputObjects();
76 fHistTrials = new TH1F("fHistTrials", "fHistTrials", 1, 0, 1);
77 fHistTrials->GetYaxis()->SetTitle("trials");
78 fOutput->Add(fHistTrials);
80 fHistXsection = new TProfile("fHistXsection", "fHistXsection", 1, 0, 1);
81 fHistXsection->GetYaxis()->SetTitle("xsection");
82 fOutput->Add(fHistXsection);
84 fHistPtHard = new TH1F("fHistPtHard", "fHistPtHard", 500, 0., 500.);
85 fHistPtHard->GetXaxis()->SetTitle("p_{T,hard} (GeV/c)");
86 fHistPtHard->GetYaxis()->SetTitle("counts");
87 fOutput->Add(fHistPtHard);
92 //________________________________________________________________________
93 Bool_t AliJetEmbeddingFromGenTask::ExecOnce()
98 new AliRun("gAlice","The ALICE Off-line Simulation Framework");
100 gRandom = new TRandom3(0);
103 TFolder *folder = new TFolder(GetName(),GetName());
104 AliRunLoader *rl = new AliRunLoader(folder);
107 AliStack *stack = rl->Stack();
108 fGen->SetStack(stack);
111 if (!(InputEvent()->FindListObject(fTracksName))) {
112 fOutTracks = new TClonesArray("AliPicoTrack", 1000);
113 fOutTracks->SetName(fTracksName);
114 InputEvent()->AddObject(fOutTracks);
121 //________________________________________________________________________
122 void AliJetEmbeddingFromGenTask::Run()
129 AliStack *stack = fGen->GetStack();
132 const Int_t nprim = stack->GetNprimary();
133 for (Int_t i=0;i<nprim;++i) {
134 if (!stack->IsPhysicalPrimary(i))
136 TParticle *part = stack->Particle(i);
137 TParticlePDG *pdg = part->GetPDG(1);
140 Int_t c = (Int_t)(TMath::Abs(pdg->Charge()));
143 Double_t pt = part->Pt();
144 Double_t eta = part->Eta();
145 Double_t phi = part->Phi();
158 Double_t mass = part->GetMass();
159 if(fMassless) mass = 0.;
160 AddTrack(pt, eta, phi,0,0,0,0,0,0,c,mass);
163 FillPythiaHistograms();
166 //________________________________________________________________________
167 void AliJetEmbeddingFromGenTask::FillPythiaHistograms() {
168 //Get PYTHIA info: pt-hard, x-section, trials
173 AliRunLoader *rl = AliRunLoader::Instance();
174 AliGenPythiaEventHeader *genPH = dynamic_cast<AliGenPythiaEventHeader*>(rl->GetHeader()->GenEventHeader());
176 Float_t xsec = genPH->GetXsection();
177 Int_t trials = genPH->Trials();
178 Float_t pthard = genPH->GetPtHard();
180 fHistXsection->Fill(0.5,xsec);
181 fHistTrials->Fill(0.5,trials);
182 fHistPtHard->Fill(pthard);