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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> |
9 | #include <TGeoGlobalMagField.h> | |
fe75ca27 | 10 | #include <AliAnalysisManager.h> |
33a8056d | 11 | #include <AliEMCALRecoUtils.h> |
fe75ca27 CL |
12 | #include <AliESDEvent.h> |
13 | #include <AliESDtrackCuts.h> | |
14 | #include <AliMagF.h> | |
15 | #include <AliTrackerBase.h> | |
cc2b5fb5 | 16 | |
cdd4e0e2 | 17 | ClassImp(AliEmcalEsdTrackFilterTask) |
cc2b5fb5 | 18 | |
19 | //________________________________________________________________________ | |
cdd4e0e2 CL |
20 | AliEmcalEsdTrackFilterTask::AliEmcalEsdTrackFilterTask() : |
21 | AliAnalysisTaskSE("AliEmcalEsdTrackFilterTask"), | |
cc2b5fb5 | 22 | fEsdTrackCuts(0), |
4d1e3842 | 23 | fDoSpdVtxCon(0), |
57184cc6 | 24 | fHybridTrackCuts(0), |
cc2b5fb5 | 25 | fTracksName(), |
6231f841 | 26 | fIncludeNoITS(kTRUE), |
35fb503f | 27 | fDoPropagation(kFALSE), |
af2f024d | 28 | fDist(440), |
cc2b5fb5 | 29 | fEsdEv(0), |
30 | fTracks(0) | |
31 | { | |
a93ef37c | 32 | // Constructor. |
cc2b5fb5 | 33 | } |
34 | ||
35 | //________________________________________________________________________ | |
cdd4e0e2 | 36 | AliEmcalEsdTrackFilterTask::AliEmcalEsdTrackFilterTask(const char *name) : |
cc2b5fb5 | 37 | AliAnalysisTaskSE(name), |
38 | fEsdTrackCuts(0), | |
4d1e3842 | 39 | fDoSpdVtxCon(0), |
57184cc6 | 40 | fHybridTrackCuts(0), |
cdd4e0e2 | 41 | fTracksName("EsdTracksOut"), |
6231f841 | 42 | fIncludeNoITS(kTRUE), |
35fb503f | 43 | fDoPropagation(kFALSE), |
af2f024d | 44 | fDist(440), |
cc2b5fb5 | 45 | fEsdEv(0), |
46 | fTracks(0) | |
47 | { | |
a93ef37c | 48 | // Constructor. |
27fde6c7 | 49 | |
50 | if (!name) | |
51 | return; | |
52 | ||
53 | SetName(name); | |
54 | ||
a93ef37c | 55 | fBranchNames = "ESD:AliESDHeader.,AliESDRun.,SPDVertex.,Tracks"; |
cc2b5fb5 | 56 | } |
57 | ||
58 | //________________________________________________________________________ | |
cdd4e0e2 | 59 | AliEmcalEsdTrackFilterTask::~AliEmcalEsdTrackFilterTask() |
cc2b5fb5 | 60 | { |
61 | //Destructor | |
62 | ||
63 | delete fEsdTrackCuts; | |
64 | } | |
65 | ||
66 | //________________________________________________________________________ | |
cdd4e0e2 | 67 | void AliEmcalEsdTrackFilterTask::UserCreateOutputObjects() |
cc2b5fb5 | 68 | { |
a93ef37c | 69 | // Create histograms. |
cc2b5fb5 | 70 | |
71 | fTracks = new TClonesArray("AliESDtrack"); | |
72 | fTracks->SetName(fTracksName); | |
73 | ||
04410c6f | 74 | if (fDoSpdVtxCon) { |
75 | if (!fEsdTrackCuts) { | |
76 | AliInfo("No track cuts given, creating default (standard only TPC) cuts"); | |
77 | fEsdTrackCuts = AliESDtrackCuts::GetStandardTPCOnlyTrackCuts(); | |
78 | fEsdTrackCuts->SetPtRange(0.15,1e3); | |
79 | } | |
80 | } else { | |
81 | AliWarning("No track cuts given, but maybe this is indeed intended?"); | |
cc2b5fb5 | 82 | } |
83 | } | |
84 | ||
85 | //________________________________________________________________________ | |
cdd4e0e2 | 86 | void AliEmcalEsdTrackFilterTask::UserExec(Option_t *) |
cc2b5fb5 | 87 | { |
88 | // Main loop, called for each event. | |
89 | ||
90 | fEsdEv = dynamic_cast<AliESDEvent*>(InputEvent()); | |
91 | if (!fEsdEv) { | |
92 | AliError("Task works only on ESD events, returning"); | |
93 | return; | |
94 | } | |
95 | ||
96 | AliAnalysisManager *am = AliAnalysisManager::GetAnalysisManager(); | |
97 | if (!am) { | |
98 | AliError("Manager zero, returning"); | |
99 | return; | |
100 | } | |
101 | ||
102 | // add tracks to event if not yet there | |
71c1dd76 | 103 | fTracks->Delete(); |
cc2b5fb5 | 104 | if (!(InputEvent()->FindListObject(fTracksName))) |
105 | InputEvent()->AddObject(fTracks); | |
106 | ||
dd5a823e | 107 | if (!fHybridTrackCuts) { // contrain TPC tracks to SPD vertex if fDoSpdVtxCon==kTRUE |
57184cc6 | 108 | am->LoadBranch("AliESDRun."); |
109 | am->LoadBranch("AliESDHeader."); | |
57184cc6 | 110 | am->LoadBranch("Tracks"); |
4d1e3842 | 111 | |
112 | if (fDoSpdVtxCon) { | |
113 | if (!TGeoGlobalMagField::Instance()->GetField()) { // construct field map | |
114 | fEsdEv->InitMagneticField(); | |
57184cc6 | 115 | } |
4d1e3842 | 116 | am->LoadBranch("SPDVertex."); |
117 | const AliESDVertex *vtxSPD = fEsdEv->GetPrimaryVertexSPD(); | |
118 | if (!vtxSPD) { | |
119 | AliError("No SPD vertex, returning"); | |
120 | return; | |
57184cc6 | 121 | } |
4d1e3842 | 122 | Int_t ntr = fEsdEv->GetNumberOfTracks(); |
123 | for (Int_t i=0, ntrnew=0; i<ntr; ++i) { | |
124 | AliESDtrack *etrack = fEsdEv->GetTrack(i); | |
125 | if (!etrack) | |
126 | continue; | |
127 | if (!fEsdTrackCuts->AcceptTrack(etrack)) | |
128 | continue; | |
129 | AliESDtrack *ntrack = AliESDtrackCuts::GetTPCOnlyTrack(fEsdEv,etrack->GetID()); | |
130 | if (!ntrack) | |
131 | continue; | |
132 | if (ntrack->Pt()<=0) { | |
133 | delete ntrack; | |
134 | continue; | |
135 | } | |
136 | Double_t bfield[3] = {0,0,0}; | |
137 | ntrack->GetBxByBz(bfield); | |
138 | AliExternalTrackParam exParam; | |
139 | Bool_t relate = ntrack->RelateToVertexBxByBz(vtxSPD,bfield,kVeryBig,&exParam); | |
140 | if (!relate) { | |
141 | delete ntrack; | |
142 | continue; | |
143 | } | |
144 | // set the constraint parameters to the track | |
145 | ntrack->Set(exParam.GetX(),exParam.GetAlpha(),exParam.GetParameter(),exParam.GetCovariance()); | |
146 | if (ntrack->Pt()<=0) { | |
147 | delete ntrack; | |
148 | continue; | |
149 | } | |
04410c6f | 150 | if (fDoPropagation) |
151 | AliEMCALRecoUtils::ExtrapolateTrackToEMCalSurface(ntrack,fDist); | |
4d1e3842 | 152 | new ((*fTracks)[ntrnew++]) AliESDtrack(*ntrack); |
57184cc6 | 153 | delete ntrack; |
57184cc6 | 154 | } |
4d1e3842 | 155 | } else { /* no spd vtx constraint */ |
156 | Int_t ntr = fEsdEv->GetNumberOfTracks(); | |
157 | for (Int_t i=0, ntrnew=0; i<ntr; ++i) { | |
158 | AliESDtrack *etrack = fEsdEv->GetTrack(i); | |
159 | if (!etrack) | |
160 | continue; | |
04410c6f | 161 | if ((fEsdTrackCuts!=0) && !fEsdTrackCuts->AcceptTrack(etrack)) |
4d1e3842 | 162 | continue; |
04410c6f | 163 | AliESDtrack *ntrack = new ((*fTracks)[ntrnew++]) AliESDtrack(*etrack); |
164 | if (fDoPropagation) | |
165 | AliEMCALRecoUtils::ExtrapolateTrackToEMCalSurface(ntrack,fDist); | |
4d1e3842 | 166 | } |
cc2b5fb5 | 167 | } |
168 | ||
10d1f756 | 169 | } else { // use hybrid track cuts |
57184cc6 | 170 | |
171 | am->LoadBranch("Tracks"); | |
172 | Int_t ntr = fEsdEv->GetNumberOfTracks(); | |
173 | for (Int_t i=0, ntrnew=0; i<ntr; ++i) { | |
174 | AliESDtrack *etrack = fEsdEv->GetTrack(i); | |
35fb503f CL |
175 | if (!etrack) |
176 | continue; | |
43e0f828 | 177 | |
57184cc6 | 178 | if (fEsdTrackCuts->AcceptTrack(etrack)) { |
43e0f828 | 179 | |
b3bef4aa | 180 | AliESDtrack *newTrack = new ((*fTracks)[ntrnew]) AliESDtrack(*etrack); |
cdd4e0e2 CL |
181 | if (fDoPropagation) |
182 | AliEMCALRecoUtils::ExtrapolateTrackToEMCalSurface(newTrack,fDist); | |
32c97abe | 183 | newTrack->SetBit(BIT(22),0); |
184 | newTrack->SetBit(BIT(23),0); | |
57184cc6 | 185 | ++ntrnew; |
186 | } else if (fHybridTrackCuts->AcceptTrack(etrack)) { | |
43e0f828 | 187 | |
6231f841 | 188 | UInt_t status = etrack->GetStatus(); |
43e0f828 | 189 | if (etrack->GetConstrainedParam() && (((status&AliESDtrack::kITSrefit)!=0) || fIncludeNoITS)) { |
190 | AliESDtrack *newTrack = new ((*fTracks)[ntrnew]) AliESDtrack(*etrack); | |
191 | const AliExternalTrackParam* constrainParam = etrack->GetConstrainedParam(); | |
192 | newTrack->Set(constrainParam->GetX(), | |
193 | constrainParam->GetAlpha(), | |
194 | constrainParam->GetParameter(), | |
195 | constrainParam->GetCovariance()); | |
196 | if ((status&AliESDtrack::kITSrefit)==0) { | |
197 | newTrack->SetBit(BIT(22),0); //type 2 | |
198 | newTrack->SetBit(BIT(23),1); | |
199 | } else { | |
200 | newTrack->SetBit(BIT(22),1); //type 1 | |
201 | newTrack->SetBit(BIT(23),0); | |
202 | } | |
203 | if (fDoPropagation) | |
204 | AliEMCALRecoUtils::ExtrapolateTrackToEMCalSurface(newTrack,fDist); | |
205 | ++ntrnew; | |
af2f024d | 206 | } |
57184cc6 | 207 | } |
208 | } | |
cc2b5fb5 | 209 | } |
210 | } |