Bug fix - Jira ticket ALIROOT-5665
[u/mrichter/AliRoot.git] / ITS / AliITSReconstructor.cxx
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121a60bd 1/**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
3 * *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
6 * *
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 **************************************************************************/
15
16/* $Id$ */
17
18///////////////////////////////////////////////////////////////////////////////
19// //
20// class for ITS reconstruction //
21// //
22///////////////////////////////////////////////////////////////////////////////
23
e62c1aea 24#include "Riostream.h"
121a60bd 25#include "AliITSReconstructor.h"
00a7cc50 26#include "AliRun.h"
113c12f1 27#include "AliRawReader.h"
7ef60110 28#include "AliESDEvent.h"
29#include "AliESDpid.h"
6cae184e 30#include "AliITSgeom.h"
7d62fb64 31#include "AliITSLoader.h"
e43c066c 32#include "AliITStrackerMI.h"
c0342e67 33#include "AliITStrackerV2.h"
121a60bd 34#include "AliITStrackerSA.h"
121a60bd 35#include "AliITSVertexerFast.h"
c8735dd3 36#include "AliITSVertexerFixed.h"
3acc14d5 37#include "AliITSVertexer3D.h"
121a60bd 38#include "AliITSVertexerZ.h"
f4f84117 39#include "AliITSVertexerZD.h"
3acc14d5 40#include "AliITSVertexerCosmics.h"
023ae34b 41#include "AliITSInitGeometry.h"
58e8dc31 42#include "AliITSTrackleterSPDEff.h"
1f9831ab 43#include "AliITSMultReconstructor.h"
44347160 44
121a60bd 45ClassImp(AliITSReconstructor)
44347160 46
e62c1aea 47//___________________________________________________________________________
94631b2f 48AliITSReconstructor::AliITSReconstructor() : AliReconstructor(),
6cae184e 49fDetTypeRec(0)
94631b2f 50{
e62c1aea 51 // Default constructor
e62c1aea 52}
53 //___________________________________________________________________________
54AliITSReconstructor::~AliITSReconstructor(){
55// destructor
6cae184e 56 if(fDetTypeRec) delete fDetTypeRec;
e62c1aea 57}
7ef60110 58//____________________________________________________________________________
59void AliITSReconstructor::GetPidSettings(AliESDpid *ESDpid) {
60 //
61 // pass PID settings from AliITSRecoParam to AliESDpid
62 //
63 Int_t pidOpt = GetRecoParam()->GetPID();
6cae184e 64
7ef60110 65 if(pidOpt==1){
3b1d8321 66 AliDebug(1,"ITS LandauFitPID option has been selected\n");
7ef60110 67 ESDpid->SetITSPIDmethod(AliESDpid::kITSLikelihood);
68 }
69 else{
3b1d8321 70 AliDebug(1,"ITS default PID\n");
7ef60110 71 ESDpid->SetITSPIDmethod(AliESDpid::kITSTruncMean);
72 }
73}
023ae34b 74//______________________________________________________________________
d76c31f4 75void AliITSReconstructor::Init() {
023ae34b 76 // Initalize this constructor bet getting/creating the objects
77 // nesseary for a proper ITS reconstruction.
78 // Inputs:
d76c31f4 79 // none.
023ae34b 80 // Output:
81 // none.
82 // Return:
83 // none.
00a7cc50 84
108bd0fe 85 AliITSInitGeometry initgeom;
86 AliITSgeom *geom = initgeom.CreateAliITSgeom();
87 AliInfo(Form("Geometry name: %s",(initgeom.GetGeometryName()).Data()));
6cae184e 88
89 fDetTypeRec = new AliITSDetTypeRec();
90 fDetTypeRec->SetITSgeom(geom);
91 fDetTypeRec->SetDefaults();
ed446fa3 92
023ae34b 93 return;
94}
6cae184e 95
121a60bd 96//_____________________________________________________________________________
6cae184e 97void AliITSReconstructor::Reconstruct(TTree *digitsTree, TTree *clustersTree) const
121a60bd 98{
99// reconstruct clusters
100
aa2e678a 101 TString recopt = GetRecoParam()->GetOptReco();
6cae184e 102 fDetTypeRec->SetTreeAddressD(digitsTree);
103 fDetTypeRec->MakeBranch(clustersTree,"R");
104 fDetTypeRec->SetTreeAddressR(clustersTree);
b4bd769d 105 fDetTypeRec->DigitsToRecPoints(digitsTree,clustersTree,0,recopt.Data(),1);
121a60bd 106}
107
00a7cc50 108//_________________________________________________________________
6cae184e 109void AliITSReconstructor::Reconstruct(AliRawReader* rawReader, TTree *clustersTree) const
113c12f1 110{
6cae184e 111 // reconstruct clusters from raw data
aa2e678a 112 TString recopt = GetRecoParam()->GetOptReco();
b4bd769d 113 fDetTypeRec->SetDefaultClusterFindersV2(kTRUE,kTRUE);
aa2e678a 114 fDetTypeRec->DigitsToRecPoints(rawReader,clustersTree,recopt.Data());
113c12f1 115}
1f9831ab 116
117//_____________________________________________________________________________
118AliTrackleter* AliITSReconstructor::CreateMultFinder() const
119{
120 // create the SPD trackeleter for mult. reconstruction
121 AliITSMultReconstructor* multReco = new AliITSMultReconstructor();
122 multReco->SetHistOn(kFALSE);
123 multReco->SetDetTypeRec(fDetTypeRec);
124 return multReco;
125}
126
58e8dc31 127//_____________________________________________________________________________
128AliTracker* AliITSReconstructor::CreateTrackleter() const
129{
130// create the SPD trackeleter (for SPD PlaneEfficiency evaluation)
1a64bda6 131 if(!GetRecoParam()->GetComputePlaneEff() || !GetRecoParam()->GetUseTrackletsPlaneEff()) return NULL;
58e8dc31 132 //Int_t trackerOpt = GetRecoParam()->GetTracker();
133 AliTracker* trackleter;
134 trackleter = new AliITSTrackleterSPDEff();
135 AliITSTrackleterSPDEff *spdtrackleter=(AliITSTrackleterSPDEff*)trackleter;
136 // here set cuts (from RecoParam)
137 if(GetRecoParam()->GetBkgTrackletsPlaneEff()) spdtrackleter->SetReflectClusterAroundZAxisForLayer(1,kTRUE);
138 if(GetRecoParam()->GetMCTrackletsPlaneEff()) spdtrackleter->SetMC();
139 spdtrackleter->SetHistOn();
7284b2b2 140 spdtrackleter->SetPhiWindowL2(GetRecoParam()->GetTrackleterPhiWindowL2());
141 spdtrackleter->SetZetaWindowL2(GetRecoParam()->GetTrackleterZetaWindowL2());
58e8dc31 142 spdtrackleter->SetPhiWindowL1(GetRecoParam()->GetTrackleterPhiWindowL1());
143 spdtrackleter->SetZetaWindowL1(GetRecoParam()->GetTrackleterZetaWindowL1());
144 if(GetRecoParam()->GetUpdateOncePerEventPlaneEff()) spdtrackleter->SetUpdateOncePerEventPlaneEff();
0ea92079 145 spdtrackleter->SetMinContVtx(GetRecoParam()->GetMinContVtxPlaneEff());
58e8dc31 146 return trackleter;
147}
113c12f1 148
149//_____________________________________________________________________________
d76c31f4 150AliTracker* AliITSReconstructor::CreateTracker() const
121a60bd 151{
152// create a ITS tracker
153
9f9cae94 154 Int_t trackerOpt = GetRecoParam()->GetTracker();
e62c1aea 155 AliTracker* tracker;
9f9cae94 156 if (trackerOpt==1) {
e341247d 157 tracker = new AliITStrackerMI(0);
23197852 158 AliITStrackerMI *mit=(AliITStrackerMI*)tracker;
159 mit->SetDetTypeRec(fDetTypeRec);
c0342e67 160 }
9f9cae94 161 else if (trackerOpt==2) {
c0342e67 162 tracker = new AliITStrackerV2(0);
e62c1aea 163 }
164 else {
cc088660 165 tracker = new AliITStrackerSA(0); // inherits from AliITStrackerMI
1966f03c 166 AliITStrackerSA *sat=(AliITStrackerSA*)tracker;
23197852 167 sat->SetDetTypeRec(fDetTypeRec);
9f9cae94 168 if(GetRecoParam()->GetTrackerSAOnly()) sat->SetSAFlag(kTRUE);
1966f03c 169 if(sat->GetSAFlag())AliDebug(1,"Tracking Performed in ITS only\n");
58e8dc31 170 if(GetRecoParam()->GetInwardFindingSA()){
171 sat->SetInwardFinding();
172 sat->SetInnerStartLayer(GetRecoParam()->GetInnerStartLayerSA());
173 }else{
12b1afb7 174 sat->SetOutwardFinding();
175 sat->SetOuterStartLayer(GetRecoParam()->GetOuterStartLayerSA());
58e8dc31 176 }
12b1afb7 177 sat->SetMinNPoints(GetRecoParam()->GetMinNPointsSA());
e62c1aea 178 }
7d62fb64 179
e62c1aea 180 return tracker;
7d62fb64 181
121a60bd 182}
183
184//_____________________________________________________________________________
d76c31f4 185AliVertexer* AliITSReconstructor::CreateVertexer() const
121a60bd 186{
187// create a ITS vertexer
188
b7bd9ab6 189 AliITSVertexer *vptr = NULL;
9f9cae94 190 Int_t vtxOpt = GetRecoParam()->GetVertexer();
191 if(vtxOpt==3){
0c1383c1 192 AliFatal("Option AliITSVertexerIons is no longer supported");
b7bd9ab6 193 return vptr;
121a60bd 194 }
ff44c37c 195 else if(vtxOpt==4){
9364069b 196 Double_t smear[3]={GetRecoParam()->GetVertexerFastSmearX(),
197 GetRecoParam()->GetVertexerFastSmearY(),
198 GetRecoParam()->GetVertexerFastSmearZ()};
3b1d8321 199 AliDebug(1,"AliITSVertexerFast has been selected");
ff44c37c 200 vptr = new AliITSVertexerFast(smear);
121a60bd 201 }
ff44c37c 202 else if(vtxOpt==1){
3b1d8321 203 AliDebug(1,"AliITSVertexerZ has been selected");
1e6316d8 204 AliITSVertexerZ* vtxrz = new AliITSVertexerZ();
205 Int_t pileupAlgo=GetRecoParam()->GetSPDVertexerPileupAlgo();
206 if(pileupAlgo==3) vtxrz->SetSearchForPileup(kFALSE);
207 vptr = vtxrz;
3acc14d5 208 }
ff44c37c 209 else if(vtxOpt==2){
3b1d8321 210 AliDebug(1,"AliITSVertexerCosmics has been selected");
ff44c37c 211 vptr = new AliITSVertexerCosmics();
121a60bd 212 }
ff44c37c 213 else if(vtxOpt==5){
3b1d8321 214 AliDebug(1,"Vertex is fixed in the position of the TDI\n");
ff44c37c 215 vptr = new AliITSVertexerFixed("TDI");
c8735dd3 216 }
ff44c37c 217 else if(vtxOpt==6){
3b1d8321 218 AliDebug(1,"Vertex is fixed in the position of the TED\n");
ff44c37c 219 vptr = new AliITSVertexerFixed("TED");
c8735dd3 220 }
f4f84117 221 else if(vtxOpt==7){
222 AliDebug(1,"VertexerZD: reconstruction of the Z coordinate with SDD \n");
223 AliITSVertexerZD*vtxrz = new AliITSVertexerZD();
224 vtxrz->SetSearchForPileup(kFALSE);
225 vptr = vtxrz;
226 }
ff44c37c 227 else {
99f38bf6 228 // by default an AliITSVertexer3D object is instatiated
4f40f207 229 AliITSVertexer3D* vtxr =
230 new AliITSVertexer3D(GetRecoParam()->GetVertexer3DWideFiducialRegionZ());
ff44c37c 231 Float_t dzw=GetRecoParam()->GetVertexer3DWideFiducialRegionZ();
232 Float_t drw=GetRecoParam()->GetVertexer3DWideFiducialRegionR();
233 vtxr->SetWideFiducialRegion(dzw,drw);
234 Float_t dzn=GetRecoParam()->GetVertexer3DNarrowFiducialRegionZ();
235 Float_t drn=GetRecoParam()->GetVertexer3DNarrowFiducialRegionR();
236 vtxr->SetNarrowFiducialRegion(dzn,drn);
237 Float_t dphil=GetRecoParam()->GetVertexer3DLooseDeltaPhiCut();
238 Float_t dphit=GetRecoParam()->GetVertexer3DTightDeltaPhiCut();
239 vtxr->SetDeltaPhiCuts(dphil,dphit);
240 Float_t dcacut=GetRecoParam()->GetVertexer3DDCACut();
241 vtxr->SetDCACut(dcacut);
8b78365f 242 Int_t pileupAlgo=GetRecoParam()->GetSPDVertexerPileupAlgo();
243 vtxr->SetPileupAlgo(pileupAlgo);
efe6147d 244 UChar_t highmultAlgo=GetRecoParam()->GetSPDVertexerHighMultAlgo();
245 vtxr->SetHighMultAlgo(highmultAlgo);
3b1d8321 246 AliDebug(1,Form("AliITSVertexer3D with pileup algo %d has been selected",pileupAlgo));
ff44c37c 247 vptr = vtxr;
248 }
249 vptr->SetDetTypeRec(fDetTypeRec);
250 return vptr;
121a60bd 251}
252
253//_____________________________________________________________________________
1919a678 254void AliITSReconstructor::FillESD(TTree * /*digitsTree*/, TTree * /*clustersTree*/,
7ef60110 255 AliESDEvent* /* esd */) const
121a60bd 256{
e62c1aea 257// make PID, find V0s and cascade
10d100d4 258/* Now done in AliESDpid
1919a678 259 if(fItsPID!=0) fItsPID->MakePID(esd);
260 else AliError("!! cannot do the PID !!");
10d100d4 261*/
6922a70f 262}