1 //**************************************************************************
2 //* This file is property of and copyright by the ALICE HLT Project *
3 //* ALICE Experiment at CERN, All rights reserved. *
5 //* Primary Authors: S.Gorbunov <sergey.gorbunov@kip.uni-heidelberg.de> *
6 //* for The ALICE HLT Project. *
8 //* Permission to use, copy, modify and distribute this software and its *
9 //* documentation strictly for non-commercial purposes is hereby granted *
10 //* without fee, provided that the above copyright notice appears in all *
11 //* copies and that both the copyright notice and this permission notice *
12 //* appear in the supporting documentation. The authors make no claims *
13 //* about the suitability of this software for any purpose. It is *
14 //* provided "as is" without express or implied warranty. *
15 //**************************************************************************
17 /** @file AliHLTGlobalVertexerComponent.cxx
18 @author Sergey Gorbunov
19 @brief Component for reconstruct primary vertex and V0's
26 #include "AliHLTGlobalVertexerComponent.h"
27 #include "AliCDBEntry.h"
28 #include "AliCDBManager.h"
31 #include "TObjString.h"
32 #include "TObjArray.h"
35 #include "AliESDEvent.h"
36 #include "AliESDtrack.h"
37 #include "AliESDVertex.h"
39 #include "AliHLTMessage.h"
41 #include "AliKFParticle.h"
42 #include "AliKFVertex.h"
45 /** ROOT macro for the implementation of ROOT specific class methods */
46 ClassImp(AliHLTGlobalVertexerComponent)
48 AliHLTGlobalVertexerComponent::AliHLTGlobalVertexerComponent()
58 fFitTracksToVertex(1),
59 fConstrainedTrackDeviation(4.),
60 fV0DaughterPrimDeviation( 2.5 ),
61 fV0PrimDeviation( 3.5 ),
63 fV0DecayLengthInSigmas(3.)
65 // see header file for class documentation
67 // refer to README to build package
69 // visit http://web.ift.uib.no/~kjeks/doc/alice-hlt
73 AliHLTGlobalVertexerComponent::~AliHLTGlobalVertexerComponent()
75 // see header file for class documentation
77 if( fTrackInfos ) delete[] fTrackInfos;
78 if( fHistPrimVertexXY ) delete fHistPrimVertexXY;
79 if( fHistPrimVertexZX ) delete fHistPrimVertexZX;
80 if( fHistPrimVertexZY ) delete fHistPrimVertexZY;
83 // Public functions to implement AliHLTComponent's interface.
84 // These functions are required for the registration process
86 const char* AliHLTGlobalVertexerComponent::GetComponentID()
88 // see header file for class documentation
90 return "GlobalVertexer";
93 void AliHLTGlobalVertexerComponent::GetInputDataTypes(AliHLTComponentDataTypeList& list)
95 // see header file for class documentation
97 list.push_back( kAliHLTDataTypeESDObject|kAliHLTDataOriginOut );
100 AliHLTComponentDataType AliHLTGlobalVertexerComponent::GetOutputDataType()
102 // see header file for class documentation
103 return kAliHLTMultipleDataType;
106 int AliHLTGlobalVertexerComponent::GetOutputDataTypes(AliHLTComponentDataTypeList& tgtList)
109 // see header file for class documentation
111 tgtList.push_back(kAliHLTDataTypeESDObject|kAliHLTDataOriginOut);
112 tgtList.push_back(kAliHLTDataTypeHistogram);
113 return tgtList.size();
116 void AliHLTGlobalVertexerComponent::GetOutputDataSize( unsigned long& constBase, double& inputMultiplier )
118 // see header file for class documentation
119 // XXX TODO: Find more realistic values.
121 inputMultiplier = 2.;
124 AliHLTComponent* AliHLTGlobalVertexerComponent::Spawn()
126 // see header file for class documentation
127 return new AliHLTGlobalVertexerComponent;
130 int AliHLTGlobalVertexerComponent::DoInit( int argc, const char** argv )
134 fHistPrimVertexXY = new TH2F("primVertexXY","HLT: Primary vertex distribution in XY",60,-2.,2.,60,-2.,2.);
135 fHistPrimVertexXY->SetMarkerStyle(8);
136 fHistPrimVertexXY->SetMarkerSize(0.4);
137 fHistPrimVertexXY->SetYTitle("Y");
138 fHistPrimVertexXY->SetXTitle("X");
139 fHistPrimVertexXY->SetStats(0);
140 //fHistPrimVertexXY->SetOption("COLZ");
142 fHistPrimVertexZX = new TH2F("primVertexZX","HLT: Primary vertex distribution in ZX",60,-15.,15.,60,-2.,2.);
143 fHistPrimVertexZX->SetMarkerStyle(8);
144 fHistPrimVertexZX->SetMarkerSize(0.4);
145 fHistPrimVertexZX->SetYTitle("X");
146 fHistPrimVertexZX->SetXTitle("Z");
147 fHistPrimVertexZX->SetStats(0);
148 //fHistPrimVertexZX->SetOption("COLZ");
150 fHistPrimVertexZY = new TH2F("primVertexZY","HLT: Primary vertex distribution in ZY",60,-10.,10.,60,-2.,2.);
151 fHistPrimVertexZY->SetMarkerStyle(8);
152 fHistPrimVertexZY->SetMarkerSize(0.4);
153 fHistPrimVertexZY->SetYTitle("Y");
154 fHistPrimVertexZY->SetXTitle("Z");
155 fHistPrimVertexZY->SetStats(0);
156 //fHistPrimVertexZY->SetOption("COLZ");
161 TString configuration="";
163 for (int i=0; i<argc && iResult>=0; i++) {
165 if (!configuration.IsNull()) configuration+=" ";
166 configuration+=argument;
169 if (!configuration.IsNull()) {
170 iResult=Configure(configuration.Data());
176 int AliHLTGlobalVertexerComponent::DoDeinit()
178 // see header file for class documentation
180 if( fTrackInfos ) delete[] fTrackInfos;
181 if( fHistPrimVertexXY ) delete fHistPrimVertexXY;
182 if( fHistPrimVertexZX ) delete fHistPrimVertexZX;
183 if( fHistPrimVertexZY ) delete fHistPrimVertexZY;
186 fHistPrimVertexXY = 0;
187 fHistPrimVertexZX = 0;
188 fHistPrimVertexZY = 0;
191 fFitTracksToVertex = 1;
192 fConstrainedTrackDeviation = 4.;
193 fV0DaughterPrimDeviation = 2.5 ;
194 fV0PrimDeviation =3.5;
196 fV0DecayLengthInSigmas = 3.;
201 int AliHLTGlobalVertexerComponent::DoEvent(const AliHLTComponentEventData& /*evtData*/, AliHLTComponentTriggerData& /*trigData*/)
204 if ( GetFirstInputBlock( kAliHLTDataTypeSOR ) || GetFirstInputBlock( kAliHLTDataTypeEOR ) )
211 for ( const TObject *iter = GetFirstInputObject(kAliHLTDataTypeESDObject); iter != NULL; iter = GetNextInputObject() ) {
213 AliESDEvent *event = dynamic_cast<AliESDEvent*>(const_cast<TObject*>( iter ) );
214 if( !event ) continue;
215 event->GetStdContent();
217 // primary vertex & V0's
222 const AliESDVertex *vPrim = event->GetPrimaryVertexTracks();
226 if( fPlotHistograms ){
227 if( vPrim && vPrim->GetNContributors()>=3 ){
228 if( fHistPrimVertexXY ) fHistPrimVertexXY->Fill( vPrim->GetX(),vPrim->GetY() );
229 if( fHistPrimVertexZX ) fHistPrimVertexZX->Fill( vPrim->GetZ(),vPrim->GetX() );
230 if( fHistPrimVertexZY ) fHistPrimVertexZY->Fill( vPrim->GetZ(),vPrim->GetY() );
232 if( fHistPrimVertexXY ) PushBack( fHistPrimVertexXY, kAliHLTDataTypeHistogram,0);
233 if( fHistPrimVertexZX ) PushBack( fHistPrimVertexZX, kAliHLTDataTypeHistogram,0);
234 if( fHistPrimVertexZY ) PushBack( fHistPrimVertexZY, kAliHLTDataTypeHistogram,0);
237 iResult = PushBack( event, kAliHLTDataTypeESDObject|kAliHLTDataOriginOut, 0);
238 if( iResult<0 ) break;
244 int AliHLTGlobalVertexerComponent::Configure(const char* arguments)
248 if (!arguments) return iResult;
250 TString allArgs=arguments;
253 TObjArray* pTokens=allArgs.Tokenize(" ");
257 for (int i=0; i<pTokens->GetEntries() && iResult>=0; i++) {
258 argument=((TObjString*)pTokens->At(i))->GetString();
259 if (argument.IsNull()) continue;
261 if (argument.CompareTo("-fitTracksToVertex")==0) {
262 if ((bMissingParam=(++i>=pTokens->GetEntries()))) break;
263 HLTInfo("fitTracksToVertex is set set to: %s", ((TObjString*)pTokens->At(i))->GetString().Data());
264 fFitTracksToVertex=((TObjString*)pTokens->At(i))->GetString().Atoi();
267 else if (argument.CompareTo("-plotHistograms")==0) {
268 if ((bMissingParam=(++i>=pTokens->GetEntries()))) break;
269 HLTInfo("plotHistograms is set set to: %s", ((TObjString*)pTokens->At(i))->GetString().Data());
270 fPlotHistograms=((TObjString*)pTokens->At(i))->GetString().Atoi();
273 else if (argument.CompareTo("-constrainedTrackDeviation")==0) {
274 if ((bMissingParam=(++i>=pTokens->GetEntries()))) break;
275 HLTInfo("constrainedTrackDeviation is set set to: %s", ((TObjString*)pTokens->At(i))->GetString().Data());
276 fConstrainedTrackDeviation=((TObjString*)pTokens->At(i))->GetString().Atof();
279 else if (argument.CompareTo("-v0DaughterPrimDeviation")==0) {
280 if ((bMissingParam=(++i>=pTokens->GetEntries()))) break;
281 HLTInfo("v0DaughterPrimDeviation is set set to: %s", ((TObjString*)pTokens->At(i))->GetString().Data());
282 fV0DaughterPrimDeviation=((TObjString*)pTokens->At(i))->GetString().Atof();
285 else if (argument.CompareTo("-v0PrimDeviation")==0) {
286 if ((bMissingParam=(++i>=pTokens->GetEntries()))) break;
287 HLTInfo("v0PrimDeviation is set set to: %s", ((TObjString*)pTokens->At(i))->GetString().Data());
288 fV0PrimDeviation=((TObjString*)pTokens->At(i))->GetString().Atof();
291 else if (argument.CompareTo("-v0Chi")==0) {
292 if ((bMissingParam=(++i>=pTokens->GetEntries()))) break;
293 HLTInfo("v0Chi is set set to: %s", ((TObjString*)pTokens->At(i))->GetString().Data());
294 fV0Chi=((TObjString*)pTokens->At(i))->GetString().Atof();
297 else if (argument.CompareTo("-v0DecayLengthInSigmas")==0) {
298 if ((bMissingParam=(++i>=pTokens->GetEntries()))) break;
299 HLTInfo("v0DecayLengthInSigmas is set set to: %s", ((TObjString*)pTokens->At(i))->GetString().Data());
300 fV0DecayLengthInSigmas=((TObjString*)pTokens->At(i))->GetString().Atof();
304 HLTError("unknown argument %s", argument.Data());
312 HLTError("missing parameter for argument %s", argument.Data());
319 int AliHLTGlobalVertexerComponent::Reconfigure(const char* cdbEntry, const char* chainId)
321 // see header file for class documentation
323 const char* path="HLT/ConfigTPC/KryptonHistoComponent";
324 const char* defaultNotify="";
327 defaultNotify=" (default)";
330 HLTInfo("reconfigure from entry %s%s, chain id %s", path, defaultNotify,(chainId!=NULL && chainId[0]!=0)?chainId:"<none>");
331 AliCDBEntry *pEntry = AliCDBManager::Instance()->Get(path/*,GetRunNo()*/);
333 TObjString* pString=dynamic_cast<TObjString*>(pEntry->GetObject());
335 HLTInfo("received configuration object string: \'%s\'", pString->GetString().Data());
336 iResult=Configure(pString->GetString().Data());
338 HLTError("configuration object \"%s\" has wrong type, required TObjString", path);
341 HLTError("can not fetch object \"%s\" from CDB", path);
350 void AliHLTGlobalVertexerComponent::SetESD( AliESDEvent *event )
352 //* Fill fTrackInfo array
354 if( fTrackInfos ) delete[] fTrackInfos;
358 AliKFParticle::SetField( fESD->GetMagneticField() );
360 Int_t nESDTracks=event->GetNumberOfTracks();
362 fTrackInfos = new AliESDTrackInfo[ nESDTracks ];
364 for (Int_t iTr=0; iTr<nESDTracks; iTr++){
366 AliESDTrackInfo &info = fTrackInfos[iTr];
368 info.fPrimUsedFlag = 0;
370 //* track quality check
372 AliESDtrack *pTrack = event->GetTrack(iTr);
373 if( !pTrack ) continue;
374 if (pTrack->GetKinkIndex(0)>0) continue;
375 if ( !( pTrack->GetStatus()&AliESDtrack::kTPCin ) ) continue;
377 //* Construct KFParticle for the track
379 if( pTrack->GetStatus()&AliESDtrack::kITSin ){
380 info.fParticle = AliKFParticle( *pTrack, 211 );
382 info.fParticle = AliKFParticle( *pTrack->GetInnerParam(), 211 );
389 void AliHLTGlobalVertexerComponent::FindPrimaryVertex( )
391 //* Find event primary vertex
393 int nTracks = fESD->GetNumberOfTracks();
395 const AliKFParticle **vSelected = new const AliKFParticle*[nTracks]; //* Selected particles for vertex fit
396 Int_t *vIndex = new int [nTracks]; //* Indices of selected particles
397 Bool_t *vFlag = new bool [nTracks]; //* Flags returned by the vertex finder
399 fPrimaryVtx.Initialize();
400 fPrimaryVtx.SetBeamConstraint(fESD->GetDiamondX(),fESD->GetDiamondY(),0,
401 TMath::Sqrt(fESD->GetSigma2DiamondX()),TMath::Sqrt(fESD->GetSigma2DiamondY()),5.3);
404 for( Int_t i = 0; i<nTracks; i++){
405 if(!fTrackInfos[i].fOK ) continue;
406 //if( fESD->GetTrack(i)->GetTPCNcls()<60 ) continue;
407 const AliKFParticle &p = fTrackInfos[i].fParticle;
408 Double_t chi = p.GetDeviationFromVertex( fPrimaryVtx );
409 if( chi > fConstrainedTrackDeviation ) continue;
410 vSelected[nSelected] = &(fTrackInfos[i].fParticle);
411 vIndex[nSelected] = i;
414 fPrimaryVtx.ConstructPrimaryVertex( vSelected, nSelected, vFlag, fConstrainedTrackDeviation );
415 for( Int_t i = 0; i<nSelected; i++){
416 if( vFlag[i] ) fTrackInfos[vIndex[i]].fPrimUsedFlag = 1;
419 for( Int_t i = 0; i<nTracks; i++ ){
420 AliESDTrackInfo &info = fTrackInfos[i];
421 info.fPrimDeviation = info.fParticle.GetDeviationFromVertex( fPrimaryVtx );
424 if( fPrimaryVtx.GetNContributors()>=3 ){
425 AliESDVertex vESD( fPrimaryVtx.Parameters(), fPrimaryVtx.CovarianceMatrix(), fPrimaryVtx.GetChi2(), fPrimaryVtx.GetNContributors() );
426 fESD->SetPrimaryVertexTracks( &vESD );
428 // relate the tracks to vertex
430 if( fFitTracksToVertex ){
431 for( Int_t i = 0; i<nTracks; i++ ){
432 if( !fTrackInfos[i].fPrimUsedFlag ) continue;
433 if( fTrackInfos[i].fPrimDeviation > fConstrainedTrackDeviation ) continue;
434 fESD->GetTrack(i)->RelateToVertex( &vESD, fESD->GetMagneticField(),100. );
439 for( Int_t i = 0; i<nTracks; i++)
440 fTrackInfos[i].fPrimUsedFlag = 0;
450 void AliHLTGlobalVertexerComponent::FindV0s( )
454 int nTracks = fESD->GetNumberOfTracks();
455 //AliKFVertex primVtx( *fESD->GetPrimaryVertexTracks() );
456 AliKFVertex &primVtx = fPrimaryVtx;
457 if( primVtx.GetNContributors()<3 ) return;
459 bool *constrainedV0 = new bool[nTracks];
460 for( Int_t iTr = 0; iTr<nTracks; iTr++ ){
461 constrainedV0[iTr] = 0;
465 for( Int_t iTr = 0; iTr<nTracks; iTr++ ){ //* first daughter
467 AliESDTrackInfo &info = fTrackInfos[iTr];
468 if( !info.fOK ) continue;
469 if( info.fParticle.GetQ() >0 ) continue;
470 if( info.fPrimDeviation < fV0DaughterPrimDeviation ) continue;
472 for( Int_t jTr = 0; jTr<nTracks; jTr++ ){ //* second daughter
474 AliESDTrackInfo &jnfo = fTrackInfos[jTr];
475 if( !jnfo.fOK ) continue;
476 if( jnfo.fParticle.GetQ() < 0 ) continue;
477 if( jnfo.fPrimDeviation < fV0DaughterPrimDeviation ) continue;
479 //* construct V0 mother
481 AliKFParticle v0( info.fParticle, jnfo.fParticle );
485 if( v0.GetChi2()<0 || v0.GetChi2() > fV0Chi*fV0Chi*v0.GetNDF() ) continue;
487 //* subtruct daughters from primary vertex
489 AliKFVertex primVtxCopy = primVtx;
491 if( info.fPrimUsedFlag ){
492 if( primVtxCopy.GetNContributors()<=2 ) continue;
493 primVtxCopy -= info.fParticle;
495 if( jnfo.fPrimUsedFlag ){
496 if( primVtxCopy.GetNContributors()<=2 ) continue;
497 primVtxCopy -= jnfo.fParticle;
499 //* Check v0 Chi^2 deviation from primary vertex
501 if( v0.GetDeviationFromVertex( primVtxCopy ) > fV0PrimDeviation ) continue;
503 //* Add V0 to primary vertex to improve the primary vertex resolution
507 //* Set production vertex for V0
509 v0.SetProductionVertex( primVtxCopy );
511 //* Get V0 decay length with estimated error
513 Double_t length, sigmaLength;
514 if( v0.GetDecayLength( length, sigmaLength ) ) continue;
516 //* Reject V0 if it decays too close[sigma] to the primary vertex
518 if( length < fV0DecayLengthInSigmas*sigmaLength ) continue;
522 AliESDv0 v0ESD( *fESD->GetTrack( iTr ), iTr, *fESD->GetTrack( jTr ), jTr );
523 fESD->AddV0( &v0ESD );
525 // relate the tracks to vertex
527 if( fFitTracksToVertex ){
528 if( constrainedV0[iTr] || constrainedV0[jTr]
529 || info.fPrimDeviation < fConstrainedTrackDeviation || jnfo.fPrimDeviation < fConstrainedTrackDeviation ) continue;
530 AliESDVertex vESD(v0.Parameters(), v0.CovarianceMatrix(), v0.GetChi2(), 2);
531 fESD->GetTrack(iTr)->RelateToVertex( &vESD, fESD->GetMagneticField(),100. );
532 fESD->GetTrack(jTr)->RelateToVertex( &vESD, fESD->GetMagneticField(),100. );
533 constrainedV0[iTr] = 1;
534 constrainedV0[jTr] = 1;
538 delete[] constrainedV0;