+/**************************************************************************
+ * Copyright(c) 2007-2009, 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. *
+ **************************************************************************/
+
+/* $Id$ */
+
//____________________________________________________________________
//
// AliITSMultReconstructor - find clusters in the pixels (theta and
// differencies in Phi (azimuth) and Zeta (longitudinal) are inside
// a fiducial volume. In case of multiple candidates it is selected the
// candidate with minimum distance in Phi.
-// The parameter AssociationChoice allows to control if two clusters
+// The parameter AssociationChoice allows to control if two clusters
// in layer 2 can be associated to the same cluster in layer 1 or not.
+// (TRUE means double associations exluded; default = TRUE)
+//
+// Two methods return the number of traklets and the number of clusters
+// in the first SPD layer (GetNTracklets GetNSingleClusters)
//
// -----------------------------------------------------------------
//
-// NOTE: The cuts on phi and zeta depends on the interacting system (p-p
+// NOTE: The cuts on phi and zeta depend on the interacting system (p-p
// or Pb-Pb). Please, check the file AliITSMultReconstructor.h and be
// sure that SetPhiWindow and SetZetaWindow are defined accordingly.
//
+// Author : Tiziano Virgili
//
//
//
//____________________________________________________________________
-#include "AliITSMultReconstructor.h"
-
-#include "TTree.h"
-#include "TH1F.h"
-#include "TH2F.h"
+#include <TClonesArray.h>
+#include <TH1F.h>
+#include <TH2F.h>
+#include <TTree.h>
+#include "AliITSMultReconstructor.h"
#include "AliITSRecPoint.h"
#include "AliITSgeom.h"
#include "AliLog.h"
//____________________________________________________________________
-AliITSMultReconstructor::AliITSMultReconstructor() {
+AliITSMultReconstructor::AliITSMultReconstructor():
+fGeometry(0),
+fClustersLay1(0),
+fClustersLay2(0),
+fTracklets(0),
+fSClusters(0),
+fAssociationFlag(0),
+fNClustersLay1(0),
+fNClustersLay2(0),
+fNTracklets(0),
+fNSingleCluster(0),
+fPhiWindow(0),
+fZetaWindow(0),
+fOnlyOneTrackletPerC2(0),
+fHistOn(0),
+fhClustersDPhiAcc(0),
+fhClustersDThetaAcc(0),
+fhClustersDZetaAcc(0),
+fhClustersDPhiAll(0),
+fhClustersDThetaAll(0),
+fhClustersDZetaAll(0),
+fhDPhiVsDThetaAll(0),
+fhDPhiVsDThetaAcc(0),
+fhDPhiVsDZetaAll(0),
+fhDPhiVsDZetaAcc(0),
+fhetaTracklets(0),
+fhphiTracklets(0),
+fhetaClustersLay1(0),
+fhphiClustersLay1(0){
// Method to reconstruct the charged particles multiplicity with the
// SPD (tracklets).
fClustersLay1 = new Float_t*[300000];
fClustersLay2 = new Float_t*[300000];
fTracklets = new Float_t*[300000];
+ fSClusters = new Float_t*[300000];
fAssociationFlag = new Bool_t[300000];
for(Int_t i=0; i<300000; i++) {
- fClustersLay1[i] = new Float_t[3];
- fClustersLay2[i] = new Float_t[3];
- fTracklets[i] = new Float_t[3];
+ fClustersLay1[i] = new Float_t[6];
+ fClustersLay2[i] = new Float_t[6];
+ fTracklets[i] = new Float_t[4];
+ fSClusters[i] = new Float_t[2];
fAssociationFlag[i] = kFALSE;
}
// definition of histograms
- fhClustersDPhiAcc = new TH1F("dphiacc", "dphi", 100,-0.1,0.1);
+ fhClustersDPhiAcc = new TH1F("dphiacc", "dphi", 100,0.,0.1);
fhClustersDPhiAcc->SetDirectory(0);
fhClustersDThetaAcc = new TH1F("dthetaacc","dtheta",100,-0.1,0.1);
fhClustersDThetaAcc->SetDirectory(0);
fhClustersDZetaAcc = new TH1F("dzetaacc","dzeta",100,-1.,1.);
fhClustersDZetaAcc->SetDirectory(0);
- fhDPhiVsDZetaAcc = new TH2F("dphiVsDzetaacc","",100,-1.,1.,100,-0.1,0.1);
+ fhDPhiVsDZetaAcc = new TH2F("dphiVsDzetaacc","",100,-1.,1.,100,0.,0.1);
fhDPhiVsDZetaAcc->SetDirectory(0);
- fhDPhiVsDThetaAcc = new TH2F("dphiVsDthetaAcc","",100,-0.1,0.1,100,-0.1,0.1);
+ fhDPhiVsDThetaAcc = new TH2F("dphiVsDthetaAcc","",100,-0.1,0.1,100,0.,0.1);
fhDPhiVsDThetaAcc->SetDirectory(0);
- fhClustersDPhiAll = new TH1F("dphiall", "dphi", 100,-0.5,0.5);
+ fhClustersDPhiAll = new TH1F("dphiall", "dphi", 100,0.0,0.5);
fhClustersDPhiAll->SetDirectory(0);
fhClustersDThetaAll = new TH1F("dthetaall","dtheta",100,-0.5,0.5);
fhClustersDThetaAll->SetDirectory(0);
fhClustersDZetaAll = new TH1F("dzetaall","dzeta",100,-5.,5.);
fhClustersDZetaAll->SetDirectory(0);
- fhDPhiVsDZetaAll = new TH2F("dphiVsDzetaall","",100,-5.,5.,100,-0.5,0.5);
+ fhDPhiVsDZetaAll = new TH2F("dphiVsDzetaall","",100,-5.,5.,100,0.,0.5);
fhDPhiVsDZetaAll->SetDirectory(0);
- fhDPhiVsDThetaAll = new TH2F("dphiVsDthetaAll","",100,-0.5,0.5,100,-0.5,0.5);
+ fhDPhiVsDThetaAll = new TH2F("dphiVsDthetaAll","",100,-0.5,0.5,100,0.,0.5);
fhDPhiVsDThetaAll->SetDirectory(0);
fhetaTracklets = new TH1F("etaTracklets", "eta", 100,-2.,2.);
}
//______________________________________________________________________
-AliITSMultReconstructor::AliITSMultReconstructor(const AliITSMultReconstructor &mr) : TObject(mr) {
+AliITSMultReconstructor::AliITSMultReconstructor(const AliITSMultReconstructor &mr) : TObject(mr),
+fGeometry(mr.fGeometry),
+fClustersLay1(mr.fClustersLay1),
+fClustersLay2(mr.fClustersLay2),
+fTracklets(mr.fTracklets),
+fSClusters(mr.fSClusters),
+fAssociationFlag(mr.fAssociationFlag),
+fNClustersLay1(mr.fNClustersLay1),
+fNClustersLay2(mr.fNClustersLay2),
+fNTracklets(mr.fNTracklets),
+fNSingleCluster(mr.fNSingleCluster),
+fPhiWindow(mr.fPhiWindow),
+fZetaWindow(mr.fZetaWindow),
+fOnlyOneTrackletPerC2(mr.fOnlyOneTrackletPerC2),
+fHistOn(mr.fHistOn),
+fhClustersDPhiAcc(mr.fhClustersDPhiAcc),
+fhClustersDThetaAcc(mr.fhClustersDThetaAcc),
+fhClustersDZetaAcc(mr.fhClustersDZetaAcc),
+fhClustersDPhiAll(mr.fhClustersDPhiAll),
+fhClustersDThetaAll(mr.fhClustersDThetaAll),
+fhClustersDZetaAll(mr.fhClustersDZetaAll),
+fhDPhiVsDThetaAll(mr.fhDPhiVsDThetaAll),
+fhDPhiVsDThetaAcc(mr.fhDPhiVsDThetaAcc),
+fhDPhiVsDZetaAll(mr.fhDPhiVsDZetaAll),
+fhDPhiVsDZetaAcc(mr.fhDPhiVsDZetaAcc),
+fhetaTracklets(mr.fhetaTracklets),
+fhphiTracklets(mr.fhphiTracklets),
+fhetaClustersLay1(mr.fhetaClustersLay1),
+fhphiClustersLay1(mr.fhphiClustersLay1) {
// Copy constructor
- // Copies are not allowed. The method is protected to avoid misuse.
- Error("AliITSMultReconstructor","Copy constructor not allowed\n");
+
}
//______________________________________________________________________
-AliITSMultReconstructor& AliITSMultReconstructor::operator=(const AliITSMultReconstructor& /* mr */){
+AliITSMultReconstructor& AliITSMultReconstructor::operator=(const AliITSMultReconstructor& mr){
// Assignment operator
- // Assignment is not allowed. The method is protected to avoid misuse.
- Error("= operator","Assignment operator not allowed\n");
+ this->~AliITSMultReconstructor();
+ new(this) AliITSMultReconstructor(mr);
return *this;
}
delete [] fClustersLay1[i];
delete [] fClustersLay2[i];
delete [] fTracklets[i];
+ delete [] fSClusters[i];
}
delete [] fClustersLay1;
delete [] fClustersLay2;
delete [] fTracklets;
+ delete [] fSClusters;
delete [] fAssociationFlag;
}
fNClustersLay1 = 0;
fNClustersLay2 = 0;
fNTracklets = 0;
-
+ fNSingleCluster = 0;
// loading the clusters
LoadClusterArrays(clusterTree);
TMath::Power(y,2) +
TMath::Power(z,2));
- fClustersLay1[iC1][0] = TMath::ACos(z/r); // Store Theta
- fClustersLay1[iC1][1] = TMath::ATan2(x,y); // Store Phi
- fClustersLay1[iC1][2] = z/r; // Store scaled z
+ fClustersLay1[iC1][0] = TMath::ACos(z/r); // Store Theta
+ fClustersLay1[iC1][1] = TMath::Pi() + TMath::ATan2(-y,-x); // Store Phi
+ fClustersLay1[iC1][2] = z/r; // Store scaled z
if (fHistOn) {
Float_t eta=fClustersLay1[iC1][0];
eta= TMath::Tan(eta/2.);
eta=-TMath::Log(eta);
fhetaClustersLay1->Fill(eta);
- fhphiClustersLay1->Fill(fClustersLay1[iC1][1]);
+ fhphiClustersLay1->Fill(fClustersLay1[iC1][1]);
}
}
TMath::Power(y,2) +
TMath::Power(z,2));
- fClustersLay2[iC2][0] = TMath::ACos(z/r); // Store Theta
- fClustersLay2[iC2][1] = TMath::ATan2(x,y); // Store Phi
- fClustersLay2[iC2][2] = z; // Store z
+ fClustersLay2[iC2][0] = TMath::ACos(z/r); // Store Theta
+ fClustersLay2[iC2][1] = TMath::Pi() + TMath::ATan2(-y,-x); // Store Phi
+ fClustersLay2[iC2][2] = z; // Store z
// this only needs to be initialized for the fNClustersLay2 first associations
fAssociationFlag[iC2] = kFALSE;
// find the difference in angles
Float_t dTheta = fClustersLay2[iC2][0] - fClustersLay1[iC1][0];
- Float_t dPhi = fClustersLay2[iC2][1] - fClustersLay1[iC1][1];
-
+ Float_t dPhi = TMath::Abs(fClustersLay2[iC2][1] - fClustersLay1[iC1][1]);
+ // take into account boundary condition
+ if (dPhi>TMath::Pi()) dPhi=2.*TMath::Pi()-dPhi;
+
// find the difference in z (between linear projection from layer 1
// and the actual point: Dzeta= z1/r1*r2 -z2)
Float_t r2 = fClustersLay2[iC2][2]/TMath::Cos(fClustersLay2[iC2][0]);
- Float_t dZeta = fClustersLay1[iC1][2]*r2 - fClustersLay2[iC2][2];
+ Float_t dZeta = fClustersLay1[iC1][2]*r2 - fClustersLay2[iC2][2];
if (fHistOn) {
fhClustersDPhiAll->Fill(dPhi);
if (distmin<100) { // This means that a cluster in layer 2 was found that mathes with iC1
if (fHistOn) {
- fhClustersDPhiAcc->Fill(dPhimin);
+ fhClustersDPhiAcc->Fill(dPhimin);
fhClustersDThetaAcc->Fill(dThetamin);
fhClustersDZetaAcc->Fill(dZetamin);
fhDPhiVsDThetaAcc->Fill(dThetamin, dPhimin);
// store the tracklet
- // use the theta from the clusters in the first layer
+ // use the theta from the clusters in the first layer
fTracklets[fNTracklets][0] = fClustersLay1[iC1][0];
- // use the phi from the clusters in the first layer
+ // use the phi from the clusters in the first layer
fTracklets[fNTracklets][1] = fClustersLay1[iC1][1];
// Store the difference between phi1 and phi2
- fTracklets[fNTracklets][2] = fClustersLay1[iC1][1] - fClustersLay2[iC2WithBestDist][1];
-
+ fTracklets[fNTracklets][2] = fClustersLay1[iC1][1] - fClustersLay2[iC2WithBestDist][1];
+
+ // find label
+ Int_t label1 = 0;
+ Int_t label2 = 0;
+ while (label2 < 3)
+ {
+ if ((Int_t) fClustersLay1[iC1][3+label1] != -2 && (Int_t) fClustersLay1[iC1][3+label1] == (Int_t) fClustersLay2[iC2WithBestDist][3+label2])
+ break;
+
+ label1++;
+ if (label1 == 3)
+ {
+ label1 = 0;
+ label2++;
+ }
+ }
+
+ if (label2 < 3)
+ {
+ AliDebug(AliLog::kDebug, Form("Found label %d == %d for tracklet candidate %d\n", (Int_t) fClustersLay1[iC1][3+label1], (Int_t) fClustersLay2[iC2WithBestDist][3+label2], fNTracklets));
+ fTracklets[fNTracklets][3] = fClustersLay1[iC1][3+label1];
+ }
+ else
+ {
+ AliDebug(AliLog::kDebug, Form("Did not find label %d %d %d %d %d %d for tracklet candidate %d\n", (Int_t) fClustersLay1[iC1][3], (Int_t) fClustersLay1[iC1][4], (Int_t) fClustersLay1[iC1][5], (Int_t) fClustersLay2[iC2WithBestDist][3], (Int_t) fClustersLay2[iC2WithBestDist][4], (Int_t) fClustersLay2[iC2WithBestDist][5], fNTracklets));
+ fTracklets[fNTracklets][3] = -2;
+ }
+
if (fHistOn) {
Float_t eta=fTracklets[fNTracklets][0];
eta= TMath::Tan(eta/2.);
// Delete the following else if you do not want to save Clusters!
- else { // This means that the cluster has not been associated
+ else { // This means that the cluster has not been associated
// store the cluster
- fTracklets[fNTracklets][0] = fClustersLay1[iC1][0];
- fTracklets[fNTracklets][1] = fClustersLay1[iC1][1];
- // Store a flag. This will indicate that the "tracklet"
- // was indeed a single cluster!
- fTracklets[fNTracklets][2] = -999999.;
- AliDebug(1,Form(" Adding a single cluster %d (cluster %d of layer 1)",
- fNTracklets, iC1));
- fNTracklets++;
+ fSClusters[fNSingleCluster][0] = fClustersLay1[iC1][0];
+ fSClusters[fNSingleCluster][1] = fClustersLay1[iC1][1];
+ AliDebug(1,Form(" Adding a single cluster %d (cluster %d of layer 1)",
+ fNSingleCluster, iC1));
+ fNSingleCluster++;
}
} // end of loop over clusters in layer 1
// loop over clusters
while(nClusters--) {
- AliITSRecPoint* cluster = (AliITSRecPoint*)itsClusters->UncheckedAt(nClusters);
+ AliITSRecPoint* cluster = (AliITSRecPoint*)itsClusters->UncheckedAt(nClusters);
if (cluster->GetLayer()>1)
continue;
fClustersLay1[fNClustersLay1][0] = x;
fClustersLay1[fNClustersLay1][1] = y;
fClustersLay1[fNClustersLay1][2] = z;
+ for (Int_t i=0; i<3; i++)
+ fClustersLay1[fNClustersLay1][3+i] = cluster->GetLabel(i);
fNClustersLay1++;
}
- if (cluster->GetLayer()==1) {
+ if (cluster->GetLayer()==1) {
fClustersLay2[fNClustersLay2][0] = x;
fClustersLay2[fNClustersLay2][1] = y;
fClustersLay2[fNClustersLay2][2] = z;
+ for (Int_t i=0; i<3; i++)
+ fClustersLay2[fNClustersLay2][3+i] = cluster->GetLabel(i);
fNClustersLay2++;
}
}// end of cluster loop
} // end of its "subdetector" loop
+ if (itsClusters) {
+ itsClusters->Delete();
+ delete itsClusters;
+ itsClusters = 0;
+ }
AliDebug(1,Form("(clusters in layer 1 : %d, layer 2: %d)",fNClustersLay1,fNClustersLay2));
}
//____________________________________________________________________
fhetaClustersLay1->Write();
fhphiClustersLay1->Write();
}
+
+