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19 /// \file MUONTriggerEfficiency.C
20 /// \brief Macro for checking trigger integrated efficiency for dimuons.
22 /// The efficiency is calculated with respect to the 3/4 coincidence.
24 /// \author Fabien Guerin, LPC Clermont-Ferrand, Jan. 2006
26 #if !defined(__CINT__) || defined(__MAKECINT__)
29 #include "TClonesArray.h"
35 #include "TParticle.h"
39 #include "AliRunLoader.h"
40 #include "AliHeader.h"
41 #include "AliLoader.h"
43 #include "AliCDBManager.h"
47 #include "AliMUONHit.h"
48 #include "AliMUONConstants.h"
49 #include "AliMUONDigit.h"
50 #include "AliMUONGlobalTrigger.h"
51 #include "AliMUONTrack.h"
53 #include "AliMUONDataInterface.h"
54 #include "AliMUONMCDataInterface.h"
55 #include "AliMUONVHitStore.h"
56 #include "AliMUONVTriggerStore.h"
63 void MUONTriggerEfficiency(const char* filenameSim="galice_sim.root",
64 const char* filenameRec="galice.root",
65 Bool_t readFromRP = 0)
68 // Set default CDB storage
69 AliCDBManager* man = AliCDBManager::Instance();
70 man->SetDefaultStorage("local://$ALICE_ROOT/OCDB");
74 AliMUONMCDataInterface diSim(filenameSim);
75 AliMUONDataInterface diRec(filenameRec);
79 cerr << "Cannot access " << filenameSim << endl;
85 cerr << "Cannot access " << filenameRec << endl;
89 FILE* fdat = fopen("MUONTriggerEfficiency.out","w");
92 cerr << "Cannot create output file" << endl;
96 Int_t coincmuon,muonlpt,muonhpt;
97 Int_t CoincMuPlus,CoincMuMinus;
102 Int_t nevents = diSim.NumberOfEvents();
104 for (Int_t ievent=0; ievent<nevents; ++ievent)
109 if (ievent%1000==0) printf("\t Event = %d\n",ievent);
114 for (Int_t j=0; j<2; j++)
116 for (Int_t jj=0; jj<4; jj++)
122 Int_t ntracks = (Int_t) diSim.NumberOfTracks(ievent);
124 for ( Int_t itrack=0; itrack<ntracks; ++itrack )
126 AliMUONVHitStore* hitStore = diSim.HitStore(ievent,itrack);
128 TIter next(hitStore->CreateIterator());
130 while ( ( mHit = static_cast<AliMUONHit*>(next()) ) )
132 Int_t Nch = mHit->Chamber();
133 Int_t hittrack = mHit->Track();
134 Float_t IdPart = mHit->Particle();
136 for (Int_t j=0;j<4;j++)
139 if (hittrack==1 || hittrack==2)
141 if (Nch==kch && IdPart==-13 && NbHits[0][j]==0) NbHits[0][j]++;
142 if (Nch==kch && IdPart==13 && NbHits[1][j]==0) NbHits[1][j]++;
149 Int_t SumNbHits=NbHits[0][0]+NbHits[0][1]+NbHits[0][2]+NbHits[0][3];
150 if (SumNbHits==3 || SumNbHits==4) CoincMuPlus=1;
152 SumNbHits=NbHits[1][0]+NbHits[1][1]+NbHits[1][2]+NbHits[1][3];
153 if (SumNbHits==3 || SumNbHits==4) CoincMuMinus=1;
155 if (CoincMuPlus==1 && CoincMuMinus==1) coincmuon++;
158 if ( readFromRP ) tree = "R";
160 AliMUONVTriggerStore* triggerStore = diRec.TriggerStore(ievent,tree.Data());
162 AliMUONGlobalTrigger* gloTrg = triggerStore->Global();
164 if (gloTrg->PairUnlikeLpt()>=1) muonlpt++;
165 if (gloTrg->PairUnlikeHpt()>=1) muonhpt++;
167 } // end loop on event
169 // calculate efficiency with as a ref. at least 3/4 planes fired
170 Float_t efficiencylpt,efficiencyhpt;
171 Double_t coincmu,lptmu,hptmu;
173 coincmu=Double_t(coincmuon);
174 lptmu=Double_t(muonlpt);
175 hptmu=Double_t(muonhpt);
179 fprintf(fdat," Number of events = %d \n",nevents);
180 fprintf(fdat," Number of events with 3/4 coinc = %d \n",coincmuon);
181 fprintf(fdat," Nomber of dimuons with 3/4 coinc Lpt cut = %d \n",muonlpt);
182 fprintf(fdat," Number of dimuons with 3/4 coinc Hpt cut = %d \n",muonhpt);
185 efficiencylpt=lptmu/coincmu;
186 error=efficiencylpt*TMath::Sqrt((lptmu+coincmu)/(lptmu*coincmu));
187 fprintf(fdat," Efficiency Lpt cut = %4.4f +/- %4.4f\n",efficiencylpt,error);
189 efficiencyhpt=hptmu/coincmu;
190 error=efficiencyhpt*TMath::Sqrt((hptmu+coincmu)/(hptmu*coincmu));
191 fprintf(fdat," Efficiency Hpt cut = %4.4f +/- %4.4f\n",efficiencyhpt,error);