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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" |
121a60bd | 27 | #include "AliRunLoader.h" |
113c12f1 | 28 | #include "AliRawReader.h" |
00a7cc50 | 29 | #include "AliITSDetTypeRec.h" |
7d62fb64 | 30 | #include "AliITSLoader.h" |
e43c066c | 31 | #include "AliITStrackerMI.h" |
121a60bd | 32 | #include "AliITStrackerSA.h" |
33 | #include "AliITSVertexerIons.h" | |
34 | #include "AliITSVertexerFast.h" | |
35 | #include "AliITSVertexerPPZ.h" | |
36 | #include "AliITSVertexerZ.h" | |
37 | #include "AliESD.h" | |
38 | #include "AliITSpidESD.h" | |
e62c1aea | 39 | #include "AliITSpidESD1.h" |
40 | #include "AliITSpidESD2.h" | |
121a60bd | 41 | #include "AliV0vertexer.h" |
42 | #include "AliCascadeVertexer.h" | |
121a60bd | 43 | |
44 | ClassImp(AliITSReconstructor) | |
45 | ||
e62c1aea | 46 | //___________________________________________________________________________ |
47 | AliITSReconstructor::AliITSReconstructor() : AliReconstructor(){ | |
48 | // Default constructor | |
49 | fItsPID=0; | |
50 | } | |
51 | //___________________________________________________________________________ | |
52 | AliITSReconstructor::~AliITSReconstructor(){ | |
53 | // destructor | |
54 | delete fItsPID; | |
55 | } | |
56 | //______________________________________________________________________ | |
57 | AliITSReconstructor::AliITSReconstructor(const AliITSReconstructor &ob) :AliReconstructor(ob) { | |
58 | // Copy constructor | |
59 | // Copies are not allowed. The method is protected to avoid misuse. | |
60 | Error("AliITSpidESD2","Copy constructor not allowed\n"); | |
61 | } | |
62 | ||
63 | //______________________________________________________________________ | |
64 | AliITSReconstructor& AliITSReconstructor::operator=(const AliITSReconstructor& /* ob */){ | |
65 | // Assignment operator | |
66 | // Assignment is not allowed. The method is protected to avoid misuse. | |
67 | Error("= operator","Assignment operator not allowed\n"); | |
68 | return *this; | |
69 | } | |
00a7cc50 | 70 | |
121a60bd | 71 | //_____________________________________________________________________________ |
72 | void AliITSReconstructor::Reconstruct(AliRunLoader* runLoader) const | |
73 | { | |
74 | // reconstruct clusters | |
75 | ||
7d62fb64 | 76 | |
8e50d897 | 77 | AliITSLoader* loader = static_cast<AliITSLoader*>(runLoader->GetLoader("ITSLoader")); |
121a60bd | 78 | if (!loader) { |
79 | Error("Reconstruct", "ITS loader not found"); | |
80 | return; | |
81 | } | |
8e50d897 | 82 | AliITSDetTypeRec* rec = new AliITSDetTypeRec(loader); |
00a7cc50 | 83 | rec->SetDefaults(); |
84 | ||
121a60bd | 85 | loader->LoadRecPoints("recreate"); |
86 | loader->LoadDigits("read"); | |
87 | runLoader->LoadKinematics(); | |
00a7cc50 | 88 | TString option = GetOption(); |
89 | Bool_t clusfinder=kTRUE; // Default: V2 cluster finder | |
90 | if(option.Contains("OrigCF"))clusfinder=kFALSE; | |
121a60bd | 91 | |
121a60bd | 92 | Int_t nEvents = runLoader->GetNumberOfEvents(); |
93 | ||
94 | for (Int_t iEvent = 0; iEvent < nEvents; iEvent++) { | |
95 | runLoader->GetEvent(iEvent); | |
00a7cc50 | 96 | if(loader->TreeR()==0x0) loader->MakeTree("R"); |
97 | rec->MakeBranch("R"); | |
98 | rec->SetTreeAddress(); | |
99 | rec->DigitsToRecPoints(iEvent,0,"All",clusfinder); | |
121a60bd | 100 | } |
101 | ||
102 | loader->UnloadRecPoints(); | |
103 | loader->UnloadDigits(); | |
104 | runLoader->UnloadKinematics(); | |
105 | } | |
106 | ||
00a7cc50 | 107 | //_________________________________________________________________ |
108 | void AliITSReconstructor::Reconstruct(AliRunLoader* runLoader, | |
109 | AliRawReader* rawReader) const | |
113c12f1 | 110 | { |
00a7cc50 | 111 | // reconstruct clusters |
113c12f1 | 112 | |
00a7cc50 | 113 | |
8e50d897 | 114 | AliITSLoader* loader = static_cast<AliITSLoader*>(runLoader->GetLoader("ITSLoader")); |
113c12f1 | 115 | if (!loader) { |
116 | Error("Reconstruct", "ITS loader not found"); | |
117 | return; | |
118 | } | |
00a7cc50 | 119 | |
8e50d897 | 120 | AliITSDetTypeRec* rec = new AliITSDetTypeRec(loader); |
00a7cc50 | 121 | rec->SetDefaults(); |
122 | rec->SetDefaultClusterFindersV2(kTRUE); | |
113c12f1 | 123 | |
00a7cc50 | 124 | loader->LoadRecPoints("recreate"); |
113c12f1 | 125 | |
126 | Int_t iEvent = 0; | |
113c12f1 | 127 | |
00a7cc50 | 128 | while(rawReader->NextEvent()) { |
129 | runLoader->GetEvent(iEvent++); | |
130 | if(loader->TreeR()==0x0) loader->MakeTree("R"); | |
131 | rec->DigitsToRecPoints(rawReader); | |
113c12f1 | 132 | } |
133 | ||
134 | loader->UnloadRecPoints(); | |
135 | } | |
136 | ||
121a60bd | 137 | //_____________________________________________________________________________ |
e62c1aea | 138 | AliTracker* AliITSReconstructor::CreateTracker(AliRunLoader* runLoader)const |
121a60bd | 139 | { |
140 | // create a ITS tracker | |
141 | ||
7d62fb64 | 142 | |
121a60bd | 143 | AliITSgeom* geom = GetITSgeom(runLoader); |
e43c066c | 144 | TString selectedTracker = GetOption(); |
e62c1aea | 145 | AliTracker* tracker; |
146 | if (selectedTracker.Contains("MI")) { | |
147 | tracker = new AliITStrackerMI(geom); | |
148 | } | |
149 | else { | |
150 | tracker = new AliITStrackerSA(geom); // inherits from AliITStrackerMI | |
151 | } | |
7d62fb64 | 152 | |
e62c1aea | 153 | TString selectedPIDmethod = GetOption(); |
154 | AliITSLoader *loader = (AliITSLoader*)runLoader->GetLoader("ITSLoader"); | |
155 | if (!loader) { | |
156 | Error("CreateTracker", "ITS loader not found"); | |
157 | } | |
158 | if(selectedPIDmethod.Contains("LandauFitPID")){ | |
159 | loader->AdoptITSpid(new AliITSpidESD2((AliITStrackerMI*)tracker,loader)); | |
160 | } | |
161 | else{ | |
162 | Double_t parITS[] = {34., 0.15, 10.}; | |
163 | loader->AdoptITSpid(new AliITSpidESD1(parITS)); | |
164 | } | |
165 | return tracker; | |
7d62fb64 | 166 | |
121a60bd | 167 | } |
168 | ||
169 | //_____________________________________________________________________________ | |
170 | AliVertexer* AliITSReconstructor::CreateVertexer(AliRunLoader* /*runLoader*/) const | |
171 | { | |
172 | // create a ITS vertexer | |
173 | ||
f4d5a8d1 | 174 | TString selectedVertexer = GetOption(); |
121a60bd | 175 | if(selectedVertexer.Contains("ions") || selectedVertexer.Contains("IONS")){ |
176 | Info("CreateVertexer","a AliITSVertexerIons object has been selected\n"); | |
177 | return new AliITSVertexerIons("null"); | |
178 | } | |
179 | if(selectedVertexer.Contains("smear") || selectedVertexer.Contains("SMEAR")){ | |
180 | Double_t smear[3]={0.005,0.005,0.01}; | |
181 | Info("CreateVertexer","a AliITSVertexerFast object has been selected\n"); | |
182 | return new AliITSVertexerFast(smear); | |
183 | } | |
184 | if(selectedVertexer.Contains("ppz") || selectedVertexer.Contains("PPZ")){ | |
185 | Info("CreateVertexer","a AliITSVertexerPPZ object has been selected\n"); | |
186 | return new AliITSVertexerPPZ("null"); | |
187 | } | |
188 | // by default an AliITSVertexerZ object is instatiated | |
189 | Info("CreateVertexer","a AliITSVertexerZ object has been selected\n"); | |
190 | return new AliITSVertexerZ("null"); | |
191 | } | |
192 | ||
193 | //_____________________________________________________________________________ | |
e62c1aea | 194 | void AliITSReconstructor::FillESD(AliRunLoader* runLoader, |
121a60bd | 195 | AliESD* esd) const |
196 | { | |
e62c1aea | 197 | // make PID, find V0s and cascade |
198 | AliITSLoader *loader = (AliITSLoader*)runLoader->GetLoader("ITSLoader"); | |
199 | AliITSpidESD *pidESD = 0; | |
200 | TString selectedPIDmethod = GetOption(); | |
201 | if(selectedPIDmethod.Contains("LandauFitPID")){ | |
149c4c59 | 202 | Info("FillESD","ITS LandauFitPID option has been selected\n"); |
e62c1aea | 203 | pidESD=loader->GetITSpid(); |
204 | } | |
205 | else{ | |
149c4c59 | 206 | Info("FillESD","ITS default PID\n"); |
e62c1aea | 207 | pidESD=loader->GetITSpid(); |
208 | } | |
209 | if(pidESD!=0){ | |
210 | pidESD->MakePID(esd); | |
211 | } | |
212 | else { | |
213 | Error("FillESD","!! cannot do the PID !!\n"); | |
214 | } | |
121a60bd | 215 | // V0 finding |
216 | Double_t cuts[]={33, // max. allowed chi2 | |
217 | 0.16,// min. allowed negative daughter's impact parameter | |
218 | 0.05,// min. allowed positive daughter's impact parameter | |
219 | 0.08,// max. allowed DCA between the daughter tracks | |
220 | 0.99,// max. allowed cosine of V0's pointing angle | |
221 | 0.9, // min. radius of the fiducial volume | |
222 | 2.9 // max. radius of the fiducial volume | |
223 | }; | |
224 | AliV0vertexer vtxer(cuts); | |
225 | Double_t vtx[3], cvtx[6]; | |
226 | esd->GetVertex()->GetXYZ(vtx); | |
227 | esd->GetVertex()->GetSigmaXYZ(cvtx); | |
228 | vtxer.SetVertex(vtx); | |
229 | vtxer.Tracks2V0vertices(esd); | |
230 | ||
231 | // cascade finding | |
232 | Double_t cts[]={33., // max. allowed chi2 | |
233 | 0.05, // min. allowed V0 impact parameter | |
234 | 0.008, // window around the Lambda mass | |
235 | 0.035, // min. allowed bachelor's impact parameter | |
236 | 0.10, // max. allowed DCA between a V0 and a track | |
237 | 0.9985, //max. allowed cosine of the cascade pointing angle | |
238 | 0.9, // min. radius of the fiducial volume | |
239 | 2.9 // max. radius of the fiducial volume | |
240 | }; | |
241 | AliCascadeVertexer cvtxer=AliCascadeVertexer(cts); | |
242 | cvtxer.SetVertex(vtx); | |
243 | cvtxer.V0sTracks2CascadeVertices(esd); | |
244 | } | |
245 | ||
246 | ||
247 | //_____________________________________________________________________________ | |
248 | AliITSgeom* AliITSReconstructor::GetITSgeom(AliRunLoader* runLoader) const | |
249 | { | |
250 | // get the ITS geometry | |
251 | ||
252 | if (!runLoader->GetAliRun()) runLoader->LoadgAlice(); | |
253 | if (!runLoader->GetAliRun()) { | |
254 | Error("GetITSgeom", "couldn't get AliRun object"); | |
255 | return NULL; | |
256 | } | |
8e50d897 | 257 | AliITSLoader *loader = (AliITSLoader*)runLoader->GetLoader("ITSLoader"); |
258 | AliITSgeom* geom = (AliITSgeom*)loader->GetITSgeom(); | |
7d62fb64 | 259 | if(!geom){ |
260 | Error("GetITSgeom","no ITS geometry available"); | |
121a60bd | 261 | return NULL; |
262 | } | |
7d62fb64 | 263 | |
264 | return geom; | |
121a60bd | 265 | } |
7d62fb64 | 266 |