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Commit | Line | Data |
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cc2b5fb5 | 1 | // $Id$ |
b0a53615 | 2 | // |
cdd4e0e2 | 3 | // Task to filter Esd tracks and propagate to Emcal surface. |
b0a53615 | 4 | // |
cd231d42 | 5 | // Author: C.Loizides |
cc2b5fb5 | 6 | |
33a8056d | 7 | #include "AliEmcalEsdTrackFilterTask.h" |
cc2b5fb5 | 8 | #include <TClonesArray.h> |
d47bb504 | 9 | #include <TRandom3.h> |
cc2b5fb5 | 10 | #include <TGeoGlobalMagField.h> |
fe75ca27 | 11 | #include <AliAnalysisManager.h> |
33a8056d | 12 | #include <AliEMCALRecoUtils.h> |
fe75ca27 CL |
13 | #include <AliESDEvent.h> |
14 | #include <AliESDtrackCuts.h> | |
15 | #include <AliMagF.h> | |
16 | #include <AliTrackerBase.h> | |
cc2b5fb5 | 17 | |
d47bb504 | 18 | |
cdd4e0e2 | 19 | ClassImp(AliEmcalEsdTrackFilterTask) |
cc2b5fb5 | 20 | |
21 | //________________________________________________________________________ | |
cdd4e0e2 CL |
22 | AliEmcalEsdTrackFilterTask::AliEmcalEsdTrackFilterTask() : |
23 | AliAnalysisTaskSE("AliEmcalEsdTrackFilterTask"), | |
cc2b5fb5 | 24 | fEsdTrackCuts(0), |
4d1e3842 | 25 | fDoSpdVtxCon(0), |
57184cc6 | 26 | fHybridTrackCuts(0), |
cc2b5fb5 | 27 | fTracksName(), |
6231f841 | 28 | fIncludeNoITS(kTRUE), |
35fb503f | 29 | fDoPropagation(kFALSE), |
af2f024d | 30 | fDist(440), |
d47bb504 | 31 | fTrackEfficiency(1), |
cc2b5fb5 | 32 | fEsdEv(0), |
33 | fTracks(0) | |
34 | { | |
a93ef37c | 35 | // Constructor. |
cc2b5fb5 | 36 | } |
37 | ||
38 | //________________________________________________________________________ | |
cdd4e0e2 | 39 | AliEmcalEsdTrackFilterTask::AliEmcalEsdTrackFilterTask(const char *name) : |
cc2b5fb5 | 40 | AliAnalysisTaskSE(name), |
41 | fEsdTrackCuts(0), | |
4d1e3842 | 42 | fDoSpdVtxCon(0), |
57184cc6 | 43 | fHybridTrackCuts(0), |
cdd4e0e2 | 44 | fTracksName("EsdTracksOut"), |
6231f841 | 45 | fIncludeNoITS(kTRUE), |
35fb503f | 46 | fDoPropagation(kFALSE), |
af2f024d | 47 | fDist(440), |
d47bb504 | 48 | fTrackEfficiency(1), |
cc2b5fb5 | 49 | fEsdEv(0), |
50 | fTracks(0) | |
51 | { | |
a93ef37c | 52 | // Constructor. |
27fde6c7 | 53 | |
54 | if (!name) | |
55 | return; | |
56 | ||
57 | SetName(name); | |
58 | ||
a93ef37c | 59 | fBranchNames = "ESD:AliESDHeader.,AliESDRun.,SPDVertex.,Tracks"; |
cc2b5fb5 | 60 | } |
61 | ||
62 | //________________________________________________________________________ | |
cdd4e0e2 | 63 | AliEmcalEsdTrackFilterTask::~AliEmcalEsdTrackFilterTask() |
cc2b5fb5 | 64 | { |
65 | //Destructor | |
66 | ||
67 | delete fEsdTrackCuts; | |
68 | } | |
69 | ||
70 | //________________________________________________________________________ | |
cdd4e0e2 | 71 | void AliEmcalEsdTrackFilterTask::UserCreateOutputObjects() |
cc2b5fb5 | 72 | { |
a93ef37c | 73 | // Create histograms. |
cc2b5fb5 | 74 | |
75 | fTracks = new TClonesArray("AliESDtrack"); | |
76 | fTracks->SetName(fTracksName); | |
77 | ||
04410c6f | 78 | if (fDoSpdVtxCon) { |
79 | if (!fEsdTrackCuts) { | |
80 | AliInfo("No track cuts given, creating default (standard only TPC) cuts"); | |
81 | fEsdTrackCuts = AliESDtrackCuts::GetStandardTPCOnlyTrackCuts(); | |
82 | fEsdTrackCuts->SetPtRange(0.15,1e3); | |
83 | } | |
84 | } else { | |
85 | AliWarning("No track cuts given, but maybe this is indeed intended?"); | |
cc2b5fb5 | 86 | } |
87 | } | |
88 | ||
89 | //________________________________________________________________________ | |
cdd4e0e2 | 90 | void AliEmcalEsdTrackFilterTask::UserExec(Option_t *) |
cc2b5fb5 | 91 | { |
92 | // Main loop, called for each event. | |
93 | ||
94 | fEsdEv = dynamic_cast<AliESDEvent*>(InputEvent()); | |
95 | if (!fEsdEv) { | |
96 | AliError("Task works only on ESD events, returning"); | |
97 | return; | |
98 | } | |
99 | ||
100 | AliAnalysisManager *am = AliAnalysisManager::GetAnalysisManager(); | |
101 | if (!am) { | |
102 | AliError("Manager zero, returning"); | |
103 | return; | |
104 | } | |
105 | ||
106 | // add tracks to event if not yet there | |
71c1dd76 | 107 | fTracks->Delete(); |
cc2b5fb5 | 108 | if (!(InputEvent()->FindListObject(fTracksName))) |
109 | InputEvent()->AddObject(fTracks); | |
110 | ||
ce2a8490 | 111 | if (!fHybridTrackCuts) { // constrain TPC tracks to SPD vertex if fDoSpdVtxCon==kTRUE |
57184cc6 | 112 | am->LoadBranch("AliESDRun."); |
113 | am->LoadBranch("AliESDHeader."); | |
57184cc6 | 114 | am->LoadBranch("Tracks"); |
4d1e3842 | 115 | |
116 | if (fDoSpdVtxCon) { | |
117 | if (!TGeoGlobalMagField::Instance()->GetField()) { // construct field map | |
118 | fEsdEv->InitMagneticField(); | |
57184cc6 | 119 | } |
4d1e3842 | 120 | am->LoadBranch("SPDVertex."); |
121 | const AliESDVertex *vtxSPD = fEsdEv->GetPrimaryVertexSPD(); | |
122 | if (!vtxSPD) { | |
123 | AliError("No SPD vertex, returning"); | |
124 | return; | |
57184cc6 | 125 | } |
4d1e3842 | 126 | Int_t ntr = fEsdEv->GetNumberOfTracks(); |
127 | for (Int_t i=0, ntrnew=0; i<ntr; ++i) { | |
128 | AliESDtrack *etrack = fEsdEv->GetTrack(i); | |
129 | if (!etrack) | |
130 | continue; | |
d47bb504 | 131 | |
4d1e3842 | 132 | if (!fEsdTrackCuts->AcceptTrack(etrack)) |
133 | continue; | |
d47bb504 | 134 | |
4d1e3842 | 135 | AliESDtrack *ntrack = AliESDtrackCuts::GetTPCOnlyTrack(fEsdEv,etrack->GetID()); |
136 | if (!ntrack) | |
137 | continue; | |
138 | if (ntrack->Pt()<=0) { | |
139 | delete ntrack; | |
140 | continue; | |
141 | } | |
142 | Double_t bfield[3] = {0,0,0}; | |
143 | ntrack->GetBxByBz(bfield); | |
144 | AliExternalTrackParam exParam; | |
145 | Bool_t relate = ntrack->RelateToVertexBxByBz(vtxSPD,bfield,kVeryBig,&exParam); | |
146 | if (!relate) { | |
147 | delete ntrack; | |
148 | continue; | |
149 | } | |
150 | // set the constraint parameters to the track | |
151 | ntrack->Set(exParam.GetX(),exParam.GetAlpha(),exParam.GetParameter(),exParam.GetCovariance()); | |
152 | if (ntrack->Pt()<=0) { | |
153 | delete ntrack; | |
154 | continue; | |
155 | } | |
c0440012 | 156 | |
157 | if (fTrackEfficiency < 1) { | |
158 | Double_t r = gRandom->Rndm(); | |
159 | if (fTrackEfficiency < r) | |
160 | continue; | |
161 | } | |
162 | ||
04410c6f | 163 | if (fDoPropagation) |
164 | AliEMCALRecoUtils::ExtrapolateTrackToEMCalSurface(ntrack,fDist); | |
4d1e3842 | 165 | new ((*fTracks)[ntrnew++]) AliESDtrack(*ntrack); |
57184cc6 | 166 | delete ntrack; |
57184cc6 | 167 | } |
4d1e3842 | 168 | } else { /* no spd vtx constraint */ |
169 | Int_t ntr = fEsdEv->GetNumberOfTracks(); | |
170 | for (Int_t i=0, ntrnew=0; i<ntr; ++i) { | |
171 | AliESDtrack *etrack = fEsdEv->GetTrack(i); | |
172 | if (!etrack) | |
173 | continue; | |
c0440012 | 174 | |
175 | if ((fEsdTrackCuts!=0) && !fEsdTrackCuts->AcceptTrack(etrack)) | |
176 | continue; | |
177 | ||
d47bb504 | 178 | if (fTrackEfficiency < 1) { |
179 | Double_t r = gRandom->Rndm(); | |
180 | if (fTrackEfficiency < r) | |
181 | continue; | |
182 | } | |
c0440012 | 183 | |
04410c6f | 184 | AliESDtrack *ntrack = new ((*fTracks)[ntrnew++]) AliESDtrack(*etrack); |
185 | if (fDoPropagation) | |
186 | AliEMCALRecoUtils::ExtrapolateTrackToEMCalSurface(ntrack,fDist); | |
4d1e3842 | 187 | } |
cc2b5fb5 | 188 | } |
189 | ||
10d1f756 | 190 | } else { // use hybrid track cuts |
57184cc6 | 191 | |
192 | am->LoadBranch("Tracks"); | |
193 | Int_t ntr = fEsdEv->GetNumberOfTracks(); | |
194 | for (Int_t i=0, ntrnew=0; i<ntr; ++i) { | |
195 | AliESDtrack *etrack = fEsdEv->GetTrack(i); | |
35fb503f CL |
196 | if (!etrack) |
197 | continue; | |
d47bb504 | 198 | |
57184cc6 | 199 | if (fEsdTrackCuts->AcceptTrack(etrack)) { |
b3bef4aa | 200 | AliESDtrack *newTrack = new ((*fTracks)[ntrnew]) AliESDtrack(*etrack); |
cdd4e0e2 CL |
201 | if (fDoPropagation) |
202 | AliEMCALRecoUtils::ExtrapolateTrackToEMCalSurface(newTrack,fDist); | |
32c97abe | 203 | newTrack->SetBit(BIT(22),0); |
204 | newTrack->SetBit(BIT(23),0); | |
57184cc6 | 205 | ++ntrnew; |
206 | } else if (fHybridTrackCuts->AcceptTrack(etrack)) { | |
3f4c638b | 207 | if (!etrack->GetConstrainedParam()) |
208 | continue; | |
6231f841 | 209 | UInt_t status = etrack->GetStatus(); |
3f4c638b | 210 | if (!fIncludeNoITS && ((status&AliESDtrack::kITSrefit)==0)) |
211 | continue; | |
c0440012 | 212 | |
213 | if (fTrackEfficiency < 1) { | |
214 | Double_t r = gRandom->Rndm(); | |
215 | if (fTrackEfficiency < r) | |
216 | continue; | |
217 | } | |
218 | ||
3f4c638b | 219 | AliESDtrack *newTrack = new ((*fTracks)[ntrnew]) AliESDtrack(*etrack); |
220 | if (fDoPropagation) | |
221 | AliEMCALRecoUtils::ExtrapolateTrackToEMCalSurface(newTrack,fDist); | |
222 | const AliExternalTrackParam* constrainParam = etrack->GetConstrainedParam(); | |
223 | newTrack->Set(constrainParam->GetX(), | |
224 | constrainParam->GetAlpha(), | |
225 | constrainParam->GetParameter(), | |
226 | constrainParam->GetCovariance()); | |
227 | if ((status&AliESDtrack::kITSrefit)==0) { | |
228 | newTrack->SetBit(BIT(22),0); //type 2 | |
229 | newTrack->SetBit(BIT(23),1); | |
230 | } else { | |
231 | newTrack->SetBit(BIT(22),1); //type 1 | |
232 | newTrack->SetBit(BIT(23),0); | |
af2f024d | 233 | } |
3f4c638b | 234 | ++ntrnew; |
57184cc6 | 235 | } |
236 | } | |
cc2b5fb5 | 237 | } |
238 | } |