/**************************************************************************
- * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
- * *
- * Author: The ALICE Off-line Project. *
- * Contributors are mentioned in the code where appropriate. *
- * *
- * Permission to use, copy, modify and distribute this software and its *
- * documentation strictly for non-commercial purposes is hereby granted *
- * without fee, provided that the above copyright notice appears in all *
- * copies and that both the copyright notice and this permission notice *
- * appear in the supporting documentation. The authors make no claims *
- * about the suitability of this software for any purpose. It is *
- * provided "as is" without express or implied warranty. *
- **************************************************************************/
+* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
+* *
+* Author: The ALICE Off-line Project. *
+* Contributors are mentioned in the code where appropriate. *
+* *
+* Permission to use, copy, modify and distribute this software and its *
+* documentation strictly for non-commercial purposes is hereby granted *
+* without fee, provided that the above copyright notice appears in all *
+* copies and that both the copyright notice and this permission notice *
+* appear in the supporting documentation. The authors make no claims *
+* about the suitability of this software for any purpose. It is *
+* provided "as is" without express or implied warranty. *
+**************************************************************************/
/* $Id$ */
:AliReconstructor()
,fSteerParam(0x00000007)
{
- //
- // Default constructor
- //
-
memset(fStreamLevel, 0, 5*sizeof(UChar_t));
// Xe tail cancellation parameters
fTCParams[0] = 1.156; // r1
fTCParams[5] = 0.62; // r2
fTCParams[6] = 0.0087;// c1
fTCParams[7] = 0.07; // c2
-
}
//_____________________________________________________________________________
:AliReconstructor(r)
,fSteerParam(r.fSteerParam)
{
- //
- // Copy constructor
- //
-
- memcpy(fStreamLevel,r.fStreamLevel, 5*sizeof(UChar_t));
- memcpy(fTCParams ,r.fTCParams , 8*sizeof(Double_t));
-
+ memcpy(fStreamLevel, r.fStreamLevel, 5*sizeof(UChar_t));
+ memcpy(fTCParams, r.fTCParams, 8*sizeof(Double_t));
}
//_____________________________________________________________________________
AliTRDReconstructor::~AliTRDReconstructor()
{
- //
- // Destructor
- //
-
if(fgClusters) {
fgClusters->Delete(); delete fgClusters;
}
-
}
+
//_____________________________________________________________________________
-void AliTRDReconstructor::Init()
-{
+void AliTRDReconstructor::Init(){
//
// Init Options
//
-
SetOption(GetOption());
AliInfo("TRD reconstruction will use the following settings:");
printf("\tDrift Gas Argon [ar] : %s\n", fSteerParam&kDriftGas?"yes":"no");
printf("\tStand Alone Tracking [sa] : %s\n", fSteerParam&kSeeding?"yes":"no");
printf("\tHLT Tracking [hlt] : %s\n", fSteerParam&kHLT?"yes":"no");
+ printf("\tCosmic Reconstruction [cos] : %s\n", fSteerParam&kCosmic?"yes":"no");
printf("\tNN PID [nn] : %s\n", fSteerParam&kSteerPID?"yes":"no");
- printf("\tStreaming Levels : Clusterizer[%d] Tracker[%d] PID[%d]\n"
- ,fStreamLevel[kClusterizer]
- ,fStreamLevel[kTracker]
- ,fStreamLevel[kPID]);
-
+ printf("\tStreaming Levels : Clusterizer[%d] Tracker[%d] PID[%d]\n", fStreamLevel[kClusterizer], fStreamLevel[kTracker], fStreamLevel[kPID]);
}
//_____________________________________________________________________________
void AliTRDReconstructor::ConvertDigits(AliRawReader *rawReader
- , TTree *digitsTree) const
+ , TTree *digitsTree) const
{
//
// Convert raw data digits into digit objects in a root tree
//
+ AliInfo("Convert raw data digits into digit objects [RawReader -> Digit TTree]");
+
AliTRDrawData rawData;
rawReader->Reset();
rawReader->Select("TRD");
// Reconstruct clusters
//
+ //AliInfo("Reconstruct TRD clusters from RAW data [RawReader -> Cluster TTree]");
+
+
rawReader->Reset();
rawReader->Select("TRD");
// take over ownership of clusters
fgClusters = clusterer.RecPoints();
clusterer.SetClustersOwner(kFALSE);
-
}
//_____________________________________________________________________________
// Reconstruct clusters
//
+ //AliInfo("Reconstruct TRD clusters from Digits [Digit TTree -> Cluster TTree]");
+
AliTRDclusterizer clusterer("clusterer","TRD clusterizer");
clusterer.SetReconstructor(this);
clusterer.OpenOutput(clusterTree);
// take over ownership of clusters
fgClusters = clusterer.RecPoints();
clusterer.SetClustersOwner(kFALSE);
-
}
//_____________________________________________________________________________
//_____________________________________________________________________________
void AliTRDReconstructor::FillESD(TTree* /*digitsTree*/
- , TTree* /*clusterTree*/
- , AliESDEvent* /*esd*/) const
+ , TTree* /*clusterTree*/
+ , AliESDEvent* /*esd*/) const
{
//
// Fill ESD
}
+
//_____________________________________________________________________________
void AliTRDReconstructor::SetOption(Option_t *opt)
{
- //
- // Read option string into the steer param.
- //
- // Default steer param values
- //
- // write clusters [cw] = true
- // track seeding (stand alone tracking) [sa] = true
- // PID method in reconstruction (NN) [nn] = true
- // write online tracklets [tw] = false
- // drift gas [ar] = false
- // HLT tracking [hlt] = false
- //
-
+// Read option string into the steer param.
+//
+// Default steer param values
+//
+// write clusters [cw] = true
+// track seeding (stand alone tracking) [sa] = true
+// PID method in reconstruction (NN) [nn] = true
+// write online tracklets [tw] = false
+// drift gas [ar] = false
+// HLT tracking [hlt] = false
+// Cosmic Reconstruction [cos] = false
+//
fSteerParam = 0x00000007;
TString s(opt);
} else if(sopt.Contains("hlt")){
if(!sopt.Contains("!")) fSteerParam |= kHLT;
continue;
+ } else if(sopt.Contains("cos")){
+ if(!sopt.Contains("!")) fSteerParam |= kCosmic;
} else if(sopt.Contains("sl")){
- TObjArray *stl = sopt.Tokenize("_");
- if(stl->GetEntriesFast() < 3) continue;
- TString taskstr(((TObjString*)(*stl)[1])->String());
- TString levelstring(((TObjString*)(*stl)[2])->String());
- // Set the stream Level
- Int_t level = levelstring.Atoi();
- AliTRDReconstructorTask task = kTracker;
- if(taskstr.CompareTo("cl") == 0) task = kClusterizer;
- else if(taskstr.CompareTo("tr") == 0) task = kTracker;
- else if(taskstr.CompareTo("pi") == 0) task = kPID;
- SetStreamLevel(level, task);
- continue;
- }
+ TObjArray *stl = sopt.Tokenize("_");
+ if(stl->GetEntriesFast() < 3) continue;
+ TString taskstr(((TObjString*)(*stl)[1])->String());
+ TString levelstring(((TObjString*)(*stl)[2])->String());
+ // Set the stream Level
+ Int_t level = levelstring.Atoi();
+ AliTRDReconstructorTask task = kTracker;
+ if(taskstr.CompareTo("cl") == 0) task = kClusterizer;
+ else if(taskstr.CompareTo("tr") == 0) task = kTracker;
+ else if(taskstr.CompareTo("pi") == 0) task = kPID;
+ SetStreamLevel(level, task);
+ continue;
+ }
}
-
}
//_____________________________________________________________________________
-void AliTRDReconstructor::SetStreamLevel(Int_t level, AliTRDReconstructorTask task)
-{
+void AliTRDReconstructor::SetStreamLevel(Int_t level, AliTRDReconstructorTask task){
//
// Set the Stream Level for one of the tasks Clusterizer, Tracker or PID
//
-
TString taskname;
- switch(task) {
- case kClusterizer:
- taskname = "Clusterizer";
- break;
- case kTracker:
- taskname = "Tracker";
- break;
- case kPID:
- taskname = "PID";
- break;
+ switch(task){
+ case kClusterizer:
+ taskname = "Clusterizer";
+ break;
+ case kTracker:
+ taskname = "Tracker";
+ break;
+ case kPID:
+ taskname = "PID";
+ break;
}
-
+ //AliInfo(Form("Setting Stream Level for Task %s to %d", taskname.Data(),level));
fStreamLevel[(Int_t)task] = level;
-
}
,kWriteTracklets = BIT(3)
,kDriftGas = BIT(4)
,kHLT = BIT(5)
+ ,kCosmic = BIT(6)
};
enum AliTRDReconstructorTask {
kClusterizer = 0
Bool_t IsWritingTracklets() const { return fSteerParam&kWriteTracklets;}
Bool_t IsHLT() const { return fSteerParam&kHLT;}
Bool_t IsSeeding() const { return fSteerParam&kSeeding;}
+ Bool_t IsCosmic() const { return fSteerParam&kCosmic;}
virtual void Reconstruct(AliRawReader *rawReader, TTree *clusterTree) const;
virtual void Reconstruct(TTree *digitsTree, TTree *clusterTree) const;
//______________________________________________________________
AliTRDrecoParam::AliTRDrecoParam()
:AliDetectorRecoParam()
- ,fkMaxTheta(1.0)
- ,fkMaxPhi(2.0)
+ ,fkMaxTheta(1.0)
+ ,fkMaxPhi(2.0)
,fkRoad0y(6.0)
,fkRoad0z(8.5)
,fkRoad1y(2.0)
,fkFindable(.333)
,fkChi2Z(30./*14.*//*12.5*/)
,fkChi2Y(.25)
+ ,fkChi2YCut(7.73)
+ ,fkChi2ZCut(0.069)
+ ,fkPhiCut(10.6)
+ ,fkMeanNclusters(72)
+ ,fkSigmaNclusters(5.2632)
,fkTrackLikelihood(-15.)
,fMinMaxCutSigma(4.)
,fMinLeftRightCutSigma(8.)
,fkFindable(ref.fkFindable)
,fkChi2Z(ref.fkChi2Z)
,fkChi2Y(ref.fkChi2Y)
+ ,fkChi2YCut(ref.fkChi2YCut)
+ ,fkPhiCut(ref.fkPhiCut)
+ ,fkMeanNclusters(ref.fkMeanNclusters)
+ ,fkSigmaNclusters(ref.fkSigmaNclusters)
,fkTrackLikelihood(ref.fkTrackLikelihood)
,fMinMaxCutSigma(ref.fMinMaxCutSigma)
,fMinLeftRightCutSigma(ref.fMinLeftRightCutSigma)
AliTRDrawStreamBase::SetRawStreamVersion("TB");
AliTRDrecoParam *par = new AliTRDrecoParam();
- par->SetVertexConstrained();
+ par->SetVertexConstrained(kFALSE);
+ par->SetChi2YCut(1.136);
+ par->SetChi2ZCut(0.069);
+ par->SetMaxTheta(2.1445);
+ par->SetMaxPhi(2.7475);
+ par->SetMeanNclusters(48.1197);
+ par->SetSigmaNclusters(8.59347);
return par;
}
Double_t GetChi2Y() const { return fkChi2Y; }
Double_t GetChi2Z() const { return fkChi2Z; }
+ Double_t GetChi2YCut() const { return fkChi2YCut; }
+ Double_t GetChi2ZCut() const { return fkChi2ZCut; }
+ Double_t GetPhiCut() const { return fkPhiCut; }
+ Double_t GetMeanNclusters() const { return fkMeanNclusters; }
+ Double_t GetSigmaNclusters() const { return fkSigmaNclusters; }
Double_t GetFindableClusters() const { return fkFindable; }
Double_t GetMaxTheta() const { return fkMaxTheta; }
Double_t GetMaxPhi() const { return fkMaxPhi; }
Bool_t IsVertexConstrained() const { return TestBit(kVertexConstrained); }
Bool_t HasImproveTracklets() const { return TestBit(kImproveTracklet); }
-
+ void SetMaxTheta(Double_t maxTheta) {fkMaxTheta = maxTheta;}
+ void SetMaxPhi(Double_t maxPhi) {fkMaxPhi = maxPhi;}
void SetFindableClusters(Double_t r) {fkFindable = r;}
void SetChi2Y(Double_t chi2) {fkChi2Y = chi2;}
void SetChi2Z(Double_t chi2) {fkChi2Z = chi2;}
+ void SetChi2YCut(Double_t chi2YCut) {fkChi2YCut = chi2YCut;}
+ void SetChi2ZCut(Double_t chi2ZCut) {fkChi2ZCut = chi2ZCut;}
+ void SetPhiCut(Double_t phiCut) {fkPhiCut = phiCut;}
+ void SetMeanNclusters(Double_t meanNclusters) {fkMeanNclusters = meanNclusters;}
+ void SetSigmaNclusters(Double_t sigmaNclusters) {fkSigmaNclusters = sigmaNclusters;}
void SetClusterSharing(Bool_t share = kTRUE) { SetBit(kClusterSharing, share);}
void SetImproveTracklets(Bool_t improve = kTRUE) { SetBit(kImproveTracklet, improve);}
void SetVertexConstrained(Bool_t vc = kTRUE) { SetBit(kVertexConstrained, vc); }
Double_t fkFindable; // Ratio of clusters from a track in one chamber which are at minimum supposed to be found.
Double_t fkChi2Z; // Max chi2 on the z direction for seeding clusters fit
Double_t fkChi2Y; // Max chi2 on the y direction for seeding clusters Rieman fit
+ Double_t fkChi2YCut; // Cut on the Chi2 in y-direction in the likelihood filter
+ Double_t fkChi2ZCut; // Cut on the Chi2 in z-direction in the likelihood filter
+ Double_t fkPhiCut; // Cut on the deviation of the phi angles between tracklet and track fit (lik. filter)
+ Double_t fkMeanNclusters; // Mean of the distribution of the number of clusters per tracklet
+ Double_t fkSigmaNclusters; // Sigma of the distribution of the number of clusters per tracklet
Double_t fkTrackLikelihood; // Track likelihood for tracklets Rieman fit
Double_t fSysCovMatrix[5]; // Systematic uncertainty from calibration and alignment for each tracklet
<<"RiemanFitter.=" << rim
<<"\n";
}
-
if(chi2[0] > fReconstructor->GetRecoParam() ->GetChi2Z()/*7./(3. - sLayer)*//*iter*/){
- //AliInfo(Form("Failed chi2 filter on chi2Z [%f].", chi2[0]));
+// //AliInfo(Form("Failed chi2 filter on chi2Z [%f].", chi2[0]));
AliTRDtrackerDebug::SetCandidateNumber(AliTRDtrackerDebug::GetCandidateNumber() + 1);
continue;
}
if(chi2[1] > fReconstructor->GetRecoParam() ->GetChi2Y()/*1./(3. - sLayer)*//*iter*/){
- //AliInfo(Form("Failed chi2 filter on chi2Y [%f].", chi2[1]));
+// //AliInfo(Form("Failed chi2 filter on chi2Y [%f].", chi2[1]));
AliTRDtrackerDebug::SetCandidateNumber(AliTRDtrackerDebug::GetCandidateNumber() + 1);
continue;
}
// fit tracklets and cook likelihood
FitTiltedRieman(&cseed[0], kTRUE);// Update Seeds and calculate Likelihood
- chi2[0] = GetChi2Y(&cseed[0]);
- chi2[1] = GetChi2Z(&cseed[0]);
- //Chi2 definitions in testing stage
- //chi2[0] = GetChi2YTest(&cseed[0]);
- //chi2[1] = GetChi2ZTest(&cseed[0]);
- Double_t like = CookLikelihood(&cseed[0], planes, chi2); // to be checked
+ Double_t like = CookLikelihood(&cseed[0], planes); // to be checked
if (TMath::Log(1.E-9 + like) < fReconstructor->GetRecoParam() ->GetTrackLikelihood()){
//AliInfo(Form("Failed likelihood %f[%e].", TMath::Log(1.E-9 + like), like));
// do the final track fitting (Once with vertex constraint and once without vertex constraint)
Double_t chi2Vals[3];
chi2Vals[0] = FitTiltedRieman(&cseed[0], kFALSE);
- if(fReconstructor->GetRecoParam() ->IsVertexConstrained())
+ if(fReconstructor->GetRecoParam()->IsVertexConstrained())
chi2Vals[1] = FitTiltedRiemanConstraint(&cseed[0], GetZ()); // Do Vertex Constrained fit if desired
else
chi2Vals[1] = 1.;
Int_t candidateNumber = AliTRDtrackerDebug::GetCandidateNumber();
TLinearFitter *fitterTC = GetTiltedRiemanFitterConstraint();
TLinearFitter *fitterT = GetTiltedRiemanFitter();
+ Int_t ncls = 0;
+ for(Int_t iseed = 0; iseed < kNPlanes; iseed++){
+ ncls += cseed[iseed].IsOK() ? cseed[iseed].GetN2() : 0;
+ }
cstreamer << "MakeSeeds2"
<< "EventNumber=" << eventNumber
<< "CandidateNumber=" << candidateNumber
<< "Chi2TR=" << chi2Vals[0]
<< "Chi2TC=" << chi2Vals[1]
<< "Nlayers=" << mlayers
+ << "NClusters=" << ncls
<< "NUsedS=" << nUsedCl
<< "NUsed=" << nusedf
<< "Like=" << like
AliTRDtrackV1 track(seeds, ¶ms[1], c, params[0], params[6]*alpha+shift);
track.PropagateTo(params[0]-5.0);
- if(fReconstructor->IsHLT()) return SetTrack(&track);
+ if(fReconstructor->IsHLT()){
+ AliTRDseedV1 *ptrTracklet = 0x0;
+ for(Int_t ip=0; ip<kNPlanes; ip++){
+ track.UnsetTracklet(ip);
+ ptrTracklet = SetTracklet(&seeds[ip]);
+ track.SetTracklet(ptrTracklet, fTracklets->GetEntriesFast()-1);
+ }
+ return SetTrack(&track);
+ }
track.ResetCovariance(1);
Int_t nc = TMath::Abs(FollowBackProlongation(track));
}
//____________________________________________________________________
-Double_t AliTRDtrackerV1::CookLikelihood(AliTRDseedV1 *cseed, Int_t planes[4]
- , Double_t *chi2)
+Double_t AliTRDtrackerV1::CookLikelihood(AliTRDseedV1 *cseed, Int_t planes[4])
{
//
// Calculate the probability of this track candidate.
//
// ratio of the total number of clusters/track which are expected to be found by the tracker.
- Float_t fgFindable = fReconstructor->GetRecoParam() ->GetFindableClusters();
-
+ const AliTRDrecoParam *fRecoPars = fReconstructor->GetRecoParam();
+ Double_t chi2y = GetChi2Y(&cseed[0]);
+ Double_t chi2z = GetChi2Z(&cseed[0]);
+
Int_t nclusters = 0;
Double_t sumda = 0.;
for(UChar_t ilayer = 0; ilayer < 4; ilayer++){
nclusters += cseed[jlayer].GetN2();
sumda += TMath::Abs(cseed[jlayer].GetYfitR(1) - cseed[jlayer].GetYref(1));
}
- Double_t likea = TMath::Exp(-sumda*10.6);
+ Double_t likea = TMath::Exp(-sumda * fRecoPars->GetPhiCut());
Double_t likechi2y = 0.0000000001;
- if (chi2[0] < 0.5) likechi2y += TMath::Exp(-TMath::Sqrt(chi2[0]) * 7.73);
- Double_t likechi2z = TMath::Exp(-chi2[1] * 0.088) / TMath::Exp(-chi2[1] * 0.019);
- Int_t enc = Int_t(fgFindable*4.*fgNTimeBins); // Expected Number Of Clusters, normally 72
- Double_t likeN = TMath::Exp(-(enc - nclusters) * 0.19);
-
+ if (fReconstructor->IsCosmic() || chi2y < 0.5) likechi2y += TMath::Exp(-TMath::Sqrt(chi2y) * fRecoPars->GetChi2YCut());
+ Double_t likechi2z = TMath::Exp(-chi2z * fRecoPars->GetChi2ZCut());
+ Double_t likeN = TMath::Exp(-(fRecoPars->GetMeanNclusters() - nclusters) / fRecoPars->GetSigmaNclusters());
Double_t like = likea * likechi2y * likechi2z * likeN;
// AliInfo(Form("sumda(%f) chi2[0](%f) chi2[1](%f) likea(%f) likechi2y(%f) likechi2z(%f) nclusters(%d) likeN(%f)", sumda, chi2[0], chi2[1], likea, likechi2y, likechi2z, nclusters, likeN));
if(fReconstructor->GetStreamLevel(AliTRDReconstructor::kTracker) >= 2){
Int_t eventNumber = AliTRDtrackerDebug::GetEventNumber();
Int_t candidateNumber = AliTRDtrackerDebug::GetCandidateNumber();
+ Int_t nTracklets = 0; Float_t mean_ncls = 0;
+ for(Int_t iseed=0; iseed < kNPlanes; iseed++){
+ if(!cseed[iseed].IsOK()) continue;
+ nTracklets++;
+ mean_ncls += cseed[iseed].GetN2();
+ }
+ if(nTracklets) mean_ncls /= nTracklets;
// The Debug Stream contains the seed
TTreeSRedirector &cstreamer = *fgDebugStreamer;
cstreamer << "CookLikelihood"
<< "tracklet4.=" << &cseed[4]
<< "tracklet5.=" << &cseed[5]
<< "sumda=" << sumda
- << "chi0=" << chi2[0]
- << "chi1=" << chi2[1]
+ << "chi2y=" << chi2y
+ << "chi2z=" << chi2z
<< "likea=" << likea
<< "likechi2y=" << likechi2y
<< "likechi2z=" << likechi2z
<< "nclusters=" << nclusters
<< "likeN=" << likeN
<< "like=" << like
+ << "meanncls=" << mean_ncls
<< "\n";
}
Float_t chi2 = 0;
for(Int_t ipl = 0; ipl < kNPlanes; ipl++){
if(!tracklets[ipl].IsOK()) continue;
- Double_t distLayer = tracklets[ipl].GetYfit(0) - tracklets[ipl].GetYref(0);
+ Double_t distLayer = (tracklets[ipl].GetYfit(0) - tracklets[ipl].GetYref(0));// /tracklets[ipl].GetSigmaY();
chi2 += distLayer * distLayer;
}
return chi2;
//_____________________________________________________________________________
Float_t AliTRDtrackerV1::GetChi2Z(AliTRDseedV1 *tracklets) const
{
- // Chi2 definition on z-direction
+ // Calculates normalized chi2 in z-direction
Float_t chi2 = 0;
+ // chi2 = Sum ((z - zmu)/sigma)^2
+ // Sigma for the z direction is defined as half of the padlength
for(Int_t ipl = 0; ipl < kNPlanes; ipl++){
if(!tracklets[ipl].IsOK()) continue;
- Double_t distLayer = tracklets[ipl].GetMeanz() - tracklets[ipl].GetZref(0);
+ Double_t distLayer = (tracklets[ipl].GetMeanz() - tracklets[ipl].GetZref(0)); // /(tracklets[ipl].GetPadLength()/2);
chi2 += distLayer * distLayer;
}
return chi2;
private:
AliTRDtrackerV1(const AliTRDtrackerV1 &tracker);
AliTRDtrackerV1 &operator=(const AliTRDtrackerV1 &tracker);
- Double_t CookLikelihood(AliTRDseedV1 *cseed, Int_t planes[4], Double_t *chi2);
+ Double_t CookLikelihood(AliTRDseedV1 *cseed, Int_t planes[4]);
Double_t CalculateTrackLikelihood(AliTRDseedV1 *tracklets, Double_t *chi2);
Int_t ImproveSeedQuality(AliTRDtrackingChamber **stack, AliTRDseedV1 *tracklet);
static Float_t CalculateReferenceX(AliTRDseedV1 *tracklets);
git://git.uio.no / u / mrichter / AliRoot.git / commitdiff