Example macro for event mixing and jet finding.

diff --git a/EMCAL/testJetFinderBg.C b/EMCAL/testJetFinderBg.C
new file mode 100644 (file)
index 0000000..ca7d4f4
--- /dev/null
+++ b/EMCAL/testJetFinderBg.C
@@ -0,0 +1,125 @@
+void testJetFinderBg(Int_t evNumber1=0, Int_t evNumber2=0) 
+{
+//*-- Author: Andreas Morsch (CERN)
+// Dynamically link some shared libs                    
+    if (gClassTable->GetID("AliRun") < 0) {
+       gROOT->LoadMacro("../macros/loadlibs.C");
+       loadlibs();
+    }
+//
+//  Create and configure JetFinder
+//
+    AliEMCALJetFinder* jetFinder = 
+       new AliEMCALJetFinder("UA1 Jet Finder", "Test");
+//
+//  Debug
+    jetFinder->SetDebug(1);
+//
+//  Input and fast simulation
+    jetFinder->SetPtCut(2.);
+    jetFinder->SetIncludeK0andN(0);
+//    jetFinder->SetMomentumSmearing(1);
+//    jetFinder->SetEfficiencySim(1);
+    jetFinder->SetHadronCorrection(0);
+//    jetFinder->SetHadronCorrector(AliEMCALHadronCorrectionv0::Instance());
+    jetFinder->SetSamplingFraction(12.9);
+//
+//  Parameters for jet finding
+    jetFinder->SetConeRadius(0.5);
+    jetFinder->SetEtSeed(4.);
+    jetFinder->SetMinJetEt(10.);
+    jetFinder->SetMinCellEt(1.);
+
+//.............
+//            |
+//            |
+//            V
+//  This part will go into class
+//
+//  Open background file
+//
+// 
+    printf("\n Opening Background File !!\n");
+    
+    TFile* fileB =  new TFile("bg.root");
+    gAlice = (AliRun*)(fileB->Get("gAlice"));
+    Int_t nparticles = gAlice->GetEvent(0);
+    // Read and save background event
+    jetFinder->FillFromHits();
+    jetFinder->FillFromTracks();
+    jetFinder->SaveBackgroundEvent();
+    delete gAlice;    
+
+
+//
+//   Open signal file
+//
+    printf("\n Opening Signal file !!\n");
+    TFile* fileS =  new TFile("galice.root", "update");
+    gAlice = (AliRun*)(fileS->Get("gAlice"));
+    
+//
+//   Loop over signal events 
+//
+
+    Int_t nhit=0;
+    for (Int_t nev = evNumber1; nev<= evNumber2; nev++) {
+       Int_t nparticles = gAlice->GetEvent(nev);
+       if (nev < evNumber1) continue;
+       if (nparticles <= 0) return;
+// Load background
+       jetFinder->InitFromBackground();
+// ECAL information    
+       jetFinder->FillFromHits(1);
+//                              ^ preserves info from background
+//     jetFinder->FillFromDigits();
+// TPC  information
+       jetFinder->FillFromTracks(1, 0);
+//                                ^ preserves info from hit
+
+// TPC  information from Hits associated to the EMCAL
+//      jetFinder->FillFromHitFlaggedTracks(1);
+//  
+       jetFinder->Find();
+
+//
+// Look at results
+       printf("\n Test Jets: %d\n", jetFinder->Njets());
+       Int_t njet = jetFinder->Njets();
+       for (Int_t nj=0; nj<njet; nj++)
+       {
+           printf("\n Jet Energy %5d %8.2f \n", 
+                  nj, jetFinder->JetEnergy(nj));
+           printf("\n Jet Phi    %5d %8.2f %8.2f \n", 
+                  nj, jetFinder->JetPhiL(nj), jetFinder->JetPhiW(nj));
+           printf("\n Jet Eta    %5d %8.2f %8.2f \n", 
+                  nj, jetFinder->JetEtaL(nj), jetFinder->JetEtaW(nj));
+       }
+//      TCanvas *c1 = new TCanvas("c1","Canvas 1",400,10,600,700);
+//      (jetFinder->GetLego())->Draw();
+    } // event loop
+
+//            ^
+//            |
+//            |
+//            |
+//.............
+    fileB->Close();
+    fileS->Close();
+}
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