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 // high level filter algorithm for TPC using a hough transformation //
22 ///////////////////////////////////////////////////////////////////////////////
24 #include <TStopwatch.h>
26 #include "AliHLTStandardIncludes.h"
27 #include "AliHLTLogging.h"
28 #include "AliHLTTransform.h"
29 #include "AliHLTHough.h"
31 #include <AliHLTITSclusterer.h>
32 #include <AliHLTITSVertexerZ.h>
33 #include <AliHLTITStracker.h>
35 #include "AliHoughFilter.h"
37 #include "AliRawReaderRoot.h"
39 #include <AliKalmanTrack.h>
40 #include <AliITSgeom.h>
41 #include <AliESDVertex.h>
43 ClassImp(AliHoughFilter)
45 //_____________________________________________________________________________
46 AliHoughFilter::AliHoughFilter():
50 // default constructor
53 AliHLTLog::fgLevel = AliHLTLog::kError;
54 if (AliDebugLevel() > 0) AliHLTLog::fgLevel = AliHLTLog::kWarning;
55 if (AliDebugLevel() > 1) AliHLTLog::fgLevel = AliHLTLog::kInformational;
56 if (AliDebugLevel() > 2) AliHLTLog::fgLevel = AliHLTLog::kDebug;
58 // Init TPC HLT geometry
59 const char *path = gSystem->Getenv("ALICE_ROOT");
60 Char_t pathname[1024];
61 strcpy(pathname,path);
62 strcat(pathname,"/HLT/src");
63 if (!AliHLTTransform::Init(pathname, kFALSE))
64 AliError("HLT initialization failed!");
66 // Init magnetic field
67 AliMagF* field = (AliMagF*)TGeoGlobalMagField::Instance();
68 AliTracker::SetFieldMap(field,kTRUE);
69 fPtmin = 0.1*AliHLTTransform::GetSolenoidField();
72 fITSgeom = new AliITSgeom();
73 fITSgeom->ReadNewFile("$ALICE_ROOT/ITS/ITSgeometry_vPPRasymmFMD.det");
75 AliError("ITS geometry not found!");
81 //_____________________________________________________________________________
82 Bool_t AliHoughFilter::Filter(AliRawVEvent* event, AliESDEvent* esd)
84 // Run fast online reconstruction
85 // based on the HLT tracking algorithms
87 TStopwatch globaltimer;
93 TTree *treeITSclusters = new TTree("TreeL3ITSclusters"," "); //make a tree
94 treeITSclusters->SetDirectory(0);
96 RunITSclusterer(event,treeITSclusters);
97 RunITSvertexer(esd,treeITSclusters);
98 RunTPCtracking(event,esd);
99 RunITStracking(esd,treeITSclusters);
100 delete treeITSclusters;
102 AliInfo(Form("Event filter has finished in %f seconds\n\n\n\n\n\n",globaltimer.RealTime()));
107 //_____________________________________________________________________________
108 void AliHoughFilter::RunITSclusterer(AliRawVEvent* event, TTree *treeClusters)
111 // The clusters are stored in a tree
116 AliHLTITSclusterer clusterer(0);
117 AliRawReader *itsrawreader=new AliRawReaderRoot(event);
118 clusterer.Digits2Clusters(itsrawreader,treeClusters);
120 AliInfo(Form("ITS clusterer has finished in %f seconds\n",timer.RealTime()));
125 //_____________________________________________________________________________
126 void AliHoughFilter::RunITSvertexer(AliESDEvent* esd, TTree *treeClusters)
129 // Store the result in the ESD
134 AliHLTITSVertexerZ vertexer;
135 AliESDVertex *vertex = vertexer.FindVertexForCurrentEvent(fITSgeom,treeClusters);
136 esd->SetVertex(vertex);
137 AliInfo(Form("ITS vertexer has finished in %f seconds\n",timer.RealTime()));
141 //_____________________________________________________________________________
142 void AliHoughFilter::RunTPCtracking(AliRawVEvent* event, AliESDEvent* esd)
144 // Run hough transform tracking in TPC
145 // The z of the vertex is taken from the ESD
146 // The result of the tracking is stored in the ESD
150 const AliESDVertex *vertex = esd->GetVertex();
151 Float_t zvertex = vertex->GetZ();
153 AliHLTHough *hough1 = new AliHLTHough();
155 hough1->SetThreshold(4);
156 hough1->CalcTransformerParams(fPtmin);
157 hough1->SetPeakThreshold(70,-1);
158 hough1->Init(100,4,event,zvertex);
159 hough1->SetAddHistograms();
161 AliHLTHough *hough2 = new AliHLTHough();
163 hough2->SetThreshold(4);
164 hough2->CalcTransformerParams(fPtmin);
165 hough2->SetPeakThreshold(70,-1);
166 hough2->Init(100,4,event,zvertex);
167 hough2->SetAddHistograms();
169 Int_t nglobaltracks = 0;
170 /* In case we run HLT code in 2 threads */
171 hough1->StartProcessInThread(0,17);
172 hough2->StartProcessInThread(18,35);
174 if(hough1->WaitForThreadFinish())
175 ::Fatal("AliHLTHough::WaitForThreadFinish"," Can not join the required thread! ");
176 if(hough2->WaitForThreadFinish())
177 ::Fatal("AliHLTHough::WaitForThreadFinish"," Can not join the required thread! ");
179 /* In case we run HLT code in the main thread
180 for(Int_t slice=0; slice<=17; slice++)
182 hough1->ReadData(slice,0);
184 hough1->AddAllHistogramsRows();
185 hough1->FindTrackCandidatesRow();
188 for(Int_t slice=18; slice<=35; slice++)
190 hough2->ReadData(slice,0);
192 hough2->AddAllHistogramsRows();
193 hough2->FindTrackCandidatesRow();
198 nglobaltracks += hough1->FillESD(esd);
199 nglobaltracks += hough2->FillESD(esd);
201 /* In case we want to debug the ESD
202 gSystem->MakeDirectory("hough1");
203 hough1->WriteTracks("./hough1");
204 gSystem->MakeDirectory("hough2");
205 hough2->WriteTracks("./hough2");
211 AliInfo(Form("\nHough Transformer has found %d TPC tracks in %f seconds\n\n", nglobaltracks,timer.RealTime()));
215 //_____________________________________________________________________________
216 void AliHoughFilter::RunITStracking(AliESDEvent* esd, TTree *treeClusters)
218 // Run the ITS tracker
219 // The tracks from the HT TPC tracking are used as seeds
220 // The prologated tracks are updated in the ESD
225 Double_t vtxErr[3]={0.005,0.005,0.010};
226 const AliESDVertex *vertex = esd->GetVertex();
227 vertex->GetXYZ(vtxPos);
229 AliHLTITStracker itsTracker(0);
230 itsTracker.SetVertex(vtxPos,vtxErr);
232 itsTracker.LoadClusters(treeClusters);
233 itsTracker.Clusters2Tracks(esd);
234 itsTracker.UnloadClusters();
235 AliInfo(Form("ITS tracker has finished in %f seconds\n",timer.RealTime()));