1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
7 * Permission to use, copy, modify and distribute this software and its *
8 * documentation strictly for non-commercial purposes is hereby granted *
9 * without fee, provided that the above copyright notice appears in all *
10 * copies and that both the copyright notice and this permission notice *
11 * appear in the supporting documentation. The authors make no claims *
12 * about the suitability of this software for any purpose. It is *
13 * provided "as is" without express or implied warranty. *
14 **************************************************************************/
18 ///////////////////////////////////////////////////////////////////////////////
20 // class for TRD reconstruction //
22 ///////////////////////////////////////////////////////////////////////////////
26 #include "AliTRDReconstructor.h"
27 #include "AliRunLoader.h"
28 #include "AliTRDclusterizerV1.h"
29 #include "AliTRDtracker.h"
30 #include "AliTRDpidESD.h"
31 #include "AliRawReader.h"
33 #include "AliTRDtrigger.h"
34 #include "AliTRDtrigParam.h"
35 #include "AliTRDgtuTrack.h"
37 #include "AliESDTrdTrack.h"
40 ClassImp(AliTRDReconstructor)
42 Bool_t AliTRDReconstructor::fgkSeedingOn = kFALSE;
43 Int_t AliTRDReconstructor::fgStreamLevel = 0; // stream (debug) level
45 //_____________________________________________________________________________
46 void AliTRDReconstructor::Reconstruct(AliRunLoader* runLoader) const
48 // reconstruct clusters
50 AliLoader *loader=runLoader->GetLoader("TRDLoader");
51 loader->LoadRecPoints("recreate");
53 runLoader->CdGAFile();
54 Int_t nEvents = runLoader->GetNumberOfEvents();
56 for (Int_t iEvent = 0; iEvent < nEvents; iEvent++) {
57 AliTRDclusterizerV1 clusterer("clusterer", "TRD clusterizer");
58 clusterer.Open(runLoader->GetFileName(), iEvent);
59 clusterer.ReadDigits();
60 clusterer.MakeClusters();
61 clusterer.WriteClusters(-1);
64 loader->UnloadRecPoints();
66 // Trigger (tracklets, LTU)
68 loader->LoadTracks("RECREATE");
70 Info("Reconstruct","Trigger tracklets will be produced");
72 AliTRDtrigger trdTrigger("Trigger","Trigger class");
74 AliTRDtrigParam *trigp = new AliTRDtrigParam("TRDtrigParam","TRD Trigger parameters");
76 if (runLoader->GetAliRun() == 0x0) runLoader->LoadgAlice();
77 gAlice = runLoader->GetAliRun();
78 Double_t x[3] = { 0.0, 0.0, 0.0 };
80 gAlice->Field(x,b); // b[] is in kilo Gauss
81 Float_t field = b[2] * 0.1; // Tesla
82 Info("Reconstruct","Trigger set for magnetic field = %f Tesla \n",field);
84 trigp->SetField(field);
86 trdTrigger.SetParameter(trigp);
88 for (Int_t iEvent = 0; iEvent < nEvents; iEvent++) {
89 trdTrigger.Open(runLoader->GetFileName(), iEvent);
90 trdTrigger.ReadDigits();
91 trdTrigger.MakeTracklets();
92 trdTrigger.WriteTracklets(-1);
95 loader->UnloadTracks();
99 //_____________________________________________________________________________
100 void AliTRDReconstructor::Reconstruct(AliRunLoader* runLoader,
101 AliRawReader* rawReader) const
103 // reconstruct clusters
105 AliInfo("Reconstruct TRD clusters from RAW data");
107 AliLoader *loader=runLoader->GetLoader("TRDLoader");
108 loader->LoadRecPoints("recreate");
110 runLoader->CdGAFile();
111 Int_t nEvents = runLoader->GetNumberOfEvents();
113 for (Int_t iEvent = 0; iEvent < nEvents; iEvent++) {
114 if (!rawReader->NextEvent()) break;
115 AliTRDclusterizerV1 clusterer("clusterer", "TRD clusterizer");
116 clusterer.Open(runLoader->GetFileName(), iEvent);
117 clusterer.ReadDigits(rawReader);
118 clusterer.MakeClusters();
119 clusterer.WriteClusters(-1);
122 loader->UnloadRecPoints();
124 // Trigger (tracklets, LTU)
126 loader->LoadTracks();
127 if (loader->TreeT()) {
128 Info("Reconstruct","Tracklets already exist");
131 Info("Reconstruct","Trigger tracklets will be produced");
133 AliTRDtrigger trdTrigger("Trigger","Trigger class");
135 AliTRDtrigParam *trigp = new AliTRDtrigParam("TRDtrigParam","TRD Trigger parameters");
137 if (runLoader->GetAliRun() == 0x0) runLoader->LoadgAlice();
138 gAlice = runLoader->GetAliRun();
139 Double_t x[3] = { 0.0, 0.0, 0.0 };
141 gAlice->Field(x,b); // b[] is in kilo Gauss
142 Float_t field = b[2] * 0.1; // Tesla
143 Info("Reconstruct","Trigger set for magnetic field = %f Tesla \n",field);
145 trigp->SetField(field);
147 trdTrigger.SetParameter(trigp);
149 rawReader->RewindEvents();
151 for (Int_t iEvent = 0; iEvent < nEvents; iEvent++) {
152 if (!rawReader->NextEvent()) break;
153 trdTrigger.Open(runLoader->GetFileName(), iEvent);
154 trdTrigger.ReadDigits(rawReader);
155 trdTrigger.MakeTracklets();
156 trdTrigger.WriteTracklets(-1);
159 loader->UnloadTracks();
163 //_____________________________________________________________________________
164 AliTracker* AliTRDReconstructor::CreateTracker(AliRunLoader* runLoader) const
166 // create a TRD tracker
168 runLoader->CdGAFile();
169 return new AliTRDtracker(gFile);
172 //_____________________________________________________________________________
173 void AliTRDReconstructor::FillESD(AliRunLoader* runLoader,
178 //Double_t parTRD[] = {
179 // 280., // Min. Ionizing Particle signal. Check it !!!
180 // 0.23, // relative resolution Check it !!!
181 // 10. // PID range (in sigmas)
186 // Trigger (tracks, GTU)
188 AliTRDtrigger trdTrigger("Trigger","Trigger class");
190 AliTRDtrigParam *trigp = new AliTRDtrigParam("TRDtrigParam","TRD Trigger parameters");
192 if (runLoader->GetAliRun() == 0x0) runLoader->LoadgAlice();
193 gAlice = runLoader->GetAliRun();
194 Double_t x[3] = { 0.0, 0.0, 0.0 };
196 gAlice->Field(x,b); // b[] is in kilo Gauss
197 Float_t field = b[2] * 0.1; // Tesla
198 Info("FillESD","Trigger set for magnetic field = %f Tesla \n",field);
200 trigp->SetField(field);
203 trdTrigger.SetParameter(trigp);
204 trdTrigger.SetRunLoader(runLoader);
207 Int_t iEvent = runLoader->GetEventNumber();
208 runLoader->GetEvent(iEvent);
209 trdTrigger.ReadTracklets(runLoader);
211 AliESDTrdTrack *TrdTrack = new AliESDTrdTrack();
212 AliTRDgtuTrack *GtuTrack;
214 Int_t nTracks = trdTrigger.GetNumberOfTracks();
215 for (Int_t iTrack = 0; iTrack < nTracks; iTrack++) {
217 GtuTrack = trdTrigger.GetTrack(iTrack);
219 TrdTrack->SetYproj(GtuTrack->GetYproj());
220 TrdTrack->SetZproj(GtuTrack->GetZproj());
221 TrdTrack->SetSlope(GtuTrack->GetSlope());
222 TrdTrack->SetDetector(GtuTrack->GetDetector());
223 TrdTrack->SetTracklets(GtuTrack->GetTracklets());
224 TrdTrack->SetPlanes(GtuTrack->GetPlanes());
225 TrdTrack->SetClusters(GtuTrack->GetClusters());
226 TrdTrack->SetPt(GtuTrack->GetPt());
227 TrdTrack->SetPhi(GtuTrack->GetPhi());
228 TrdTrack->SetEta(GtuTrack->GetEta());
229 TrdTrack->SetLabel(GtuTrack->GetLabel());
230 TrdTrack->SetPID(GtuTrack->GetPID());
231 TrdTrack->SetIsElectron(GtuTrack->IsElectron());
233 esd->AddTrdTrack(TrdTrack);