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 **************************************************************************/
16 //-----------------------------------------------------//
18 // Date : March 25 2004 //
19 // This reads the file PMD.RecPoints.root(TreeR), //
20 // calls the Clustering algorithm and stores the //
21 // clustering output in PMD.RecPoints.root(TreeR) //
23 //-----------------------------------------------------//
25 #include <Riostream.h>
30 #include <TGeometry.h>
31 #include <TObjArray.h>
32 #include <TClonesArray.h>
36 #include <TParticle.h>
38 #include "AliPMDcluster.h"
39 #include "AliPMDclupid.h"
40 #include "AliPMDrecpoint1.h"
41 #include "AliPMDUtility.h"
42 #include "AliPMDDiscriminator.h"
43 #include "AliPMDEmpDiscriminator.h"
44 #include "AliPMDtracker.h"
46 #include "AliESDPmdTrack.h"
50 ClassImp(AliPMDtracker)
52 AliPMDtracker::AliPMDtracker():
54 fRecpoints(new TClonesArray("AliPMDrecpoint1", 1000)),
55 fPMDcontin(new TObjArray()),
56 fPMDcontout(new TObjArray()),
57 fPMDutil(new AliPMDUtility()),
69 // Default Constructor
72 //--------------------------------------------------------------------//
73 AliPMDtracker::~AliPMDtracker()
90 fPMDcontout->Delete();
95 //--------------------------------------------------------------------//
96 void AliPMDtracker::LoadClusters(TTree *treein)
98 // Load the Reconstructed tree
101 //--------------------------------------------------------------------//
102 void AliPMDtracker::Clusters2Tracks(AliESD *event)
104 // Converts digits to recpoints after running clustering
105 // algorithm on CPV plane and PREshower plane
112 TBranch *branch = fTreeR->GetBranch("PMDRecpoint");
115 AliError("PMDRecpoint branch not found");
118 branch->SetAddress(&fRecpoints);
120 Int_t nmodules = (Int_t) branch->GetEntries();
122 AliDebug(1,Form("Number of modules filled in treeR = %d",nmodules));
123 for (Int_t imodule = 0; imodule < nmodules; imodule++)
125 branch->GetEntry(imodule);
126 Int_t nentries = fRecpoints->GetLast();
127 AliDebug(2,Form("Number of clusters per modules filled in treeR = %d"
129 for(Int_t ient = 0; ient < nentries+1; ient++)
131 fPMDrecpoint = (AliPMDrecpoint1*)fRecpoints->UncheckedAt(ient);
132 idet = fPMDrecpoint->GetDetector();
133 ismn = fPMDrecpoint->GetSMNumber();
134 clusdata[0] = fPMDrecpoint->GetClusX();
135 clusdata[1] = fPMDrecpoint->GetClusY();
136 clusdata[2] = fPMDrecpoint->GetClusADC();
137 clusdata[3] = fPMDrecpoint->GetClusCells();
138 clusdata[4] = fPMDrecpoint->GetClusSigmaX();
139 clusdata[5] = fPMDrecpoint->GetClusSigmaY();
141 fPMDclin = new AliPMDrecpoint1(idet,ismn,clusdata);
142 fPMDcontin->Add(fPMDclin);
146 AliPMDDiscriminator *pmddiscriminator = new AliPMDEmpDiscriminator();
147 pmddiscriminator->Discrimination(fPMDcontin,fPMDcontout);
149 const Float_t kzpos = 361.5; // middle of the PMD
153 Float_t adc, ncell, rad;
154 Float_t xglobal = 0., yglobal = 0., zglobal = 0;
158 Int_t nentries2 = fPMDcontout->GetEntries();
159 AliDebug(1,Form("Number of clusters coming after discrimination = %d"
161 for (Int_t ient1 = 0; ient1 < nentries2; ient1++)
163 fPMDclout = (AliPMDclupid*)fPMDcontout->UncheckedAt(ient1);
165 det = fPMDclout->GetDetector();
166 smn = fPMDclout->GetSMN();
167 xpos = fPMDclout->GetClusX();
168 ypos = fPMDclout->GetClusY();
169 adc = fPMDclout->GetClusADC();
170 ncell = fPMDclout->GetClusCells();
171 rad = fPMDclout->GetClusRadius();
172 pid = fPMDclout->GetClusPID();
175 /**********************************************************************
176 * det : Detector, 0: PRE & 1:CPV *
177 * smn : Serial Module Number 0 to 23 for each plane *
178 * xpos : x-position of the cluster *
179 * ypos : y-position of the cluster *
180 * THESE xpos & ypos are not the true xpos and ypos *
181 * for some of the unit modules. They are rotated. *
182 * adc : ADC contained in the cluster *
183 * ncell : Number of cells contained in the cluster *
184 * rad : radius of the cluster (1d fit) *
185 **********************************************************************/
188 fPMDutil->RectGeomCellPos(smn,xpos,ypos,xglobal,yglobal);
192 zglobal = kzpos + 1.6; // PREshower plane
196 zglobal = kzpos - 1.7; // CPV plane
201 AliESDPmdTrack *esdpmdtr = new AliESDPmdTrack();
203 esdpmdtr->SetDetector(det);
204 esdpmdtr->SetClusterX(xglobal);
205 esdpmdtr->SetClusterY(yglobal);
206 esdpmdtr->SetClusterZ(zglobal);
207 esdpmdtr->SetClusterADC(adc);
208 esdpmdtr->SetClusterCells(ncell);
209 esdpmdtr->SetClusterPID(pid);
211 event->AddPmdTrack(esdpmdtr);
214 //--------------------------------------------------------------------//
215 void AliPMDtracker::SetVertex(Double_t vtx[3], Double_t evtx[3])
224 //--------------------------------------------------------------------//
225 void AliPMDtracker::ResetClusters()
227 if (fRecpoints) fRecpoints->Clear();
229 //--------------------------------------------------------------------//