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ae982df3 | 1 | //******************************************************************** |
2 | // Example of the reconstruction that generates the ESD | |
3 | // Input files: | |
c630aafd | 4 | // a) file containing the ITS clusters |
ae982df3 | 5 | // (the AliITSFindClustersV2.C macro can be used to generate it) |
c630aafd | 6 | // b) file containing the TPC clusters |
7 | // (the AliTPCFindClusters.C macro can be used to generate it) | |
8 | // c) file containing the TRD clusters | |
9 | // (the AliTRDdigits2cluster.C macro can be used to generate it) | |
10 | // d) file containing the TOF digits | |
11 | // (the AliTOFSDigits2Digits.C macro can be used to generate it) | |
ae982df3 | 12 | // Ouput file: |
13 | // AliESDs.root containing the ESD events | |
14 | // | |
15 | // Origin: Iouri Belikov, CERN, Jouri.Belikov@cern.ch | |
16 | //******************************************************************** | |
17 | ||
c630aafd | 18 | #if !defined(__CINT__) || defined(__MAKECINT__) |
ae982df3 | 19 | #include <Riostream.h> |
20 | #include "TFile.h" | |
c630aafd | 21 | #include "TSystem.h" |
ae982df3 | 22 | #include "TStopwatch.h" |
c630aafd | 23 | #include "TGeant3.h" |
24 | ||
25 | #include "AliMagF.h" | |
26 | #include "AliRun.h" | |
27 | #include "AliRunLoader.h" | |
28 | #include "AliLoader.h" | |
ae982df3 | 29 | |
30 | #include "AliESD.h" | |
8c6a71ab | 31 | #include "AliESDpid.h" |
c630aafd | 32 | |
33 | #include "AliITS.h" | |
ae982df3 | 34 | #include "AliITSgeom.h" |
35 | #include "AliITStrackerV2.h" | |
e23730c7 | 36 | #include "AliV0vertexer.h" |
37 | #include "AliCascadeVertexer.h" | |
c630aafd | 38 | #include "AliITSpidESD.h" |
39 | #include "AliITSLoader.h" | |
40 | ||
41 | #include "AliTPCParam.h" | |
42 | #include "AliTPCtracker.h" | |
43 | #include "AliTPCpidESD.h" | |
44 | #include "AliTPCLoader.h" | |
45 | ||
79e94bf8 | 46 | #include "AliTRDtracker.h" |
47 | #include "AliTRDPartID.h" | |
c630aafd | 48 | |
49 | #include "AliTOFpidESD.h" | |
ae982df3 | 50 | #endif |
51 | ||
c630aafd | 52 | extern TSystem *gSystem; |
53 | extern AliRun *gAlice; | |
54 | extern TFile *gFile; | |
55 | ||
56 | Int_t AliESDtest(Int_t nev=1) { | |
57 | ||
58 | /**** Initialization of the NewIO *******/ | |
79e94bf8 | 59 | |
c630aafd | 60 | if (gAlice) { |
61 | delete gAlice->GetRunLoader(); | |
62 | delete gAlice; | |
63 | gAlice=0; | |
64 | } | |
65 | ||
66 | gSystem->Load("libgeant321"); // needed for the PID in TOF | |
67 | new TGeant3(""); // must be re-done ! | |
68 | ||
69 | AliRunLoader *rl = AliRunLoader::Open("galice.root"); | |
70 | if (rl == 0x0) { | |
71 | cerr<<"Can not open session"<<endl; | |
72 | return 1; | |
73 | } | |
74 | Int_t retval = rl->LoadgAlice(); | |
75 | if (retval) { | |
76 | cerr<<"AliESDtest.C : LoadgAlice returned error"<<endl; | |
77 | delete rl; | |
78 | return 1; | |
79 | } | |
80 | retval = rl->LoadHeader(); | |
81 | if (retval) { | |
82 | cerr<<"AliESDtest.C : LoadHeader returned error"<<endl; | |
83 | delete rl; | |
ae982df3 | 84 | return 2; |
85 | } | |
c630aafd | 86 | gAlice=rl->GetAliRun(); |
87 | ||
ae982df3 | 88 | |
c630aafd | 89 | AliKalmanTrack::SetConvConst( |
90 | 1000/0.299792458/gAlice->Field()->SolenoidField() | |
91 | ); | |
ae982df3 | 92 | |
93 | ||
c630aafd | 94 | /**** The ITS corner ********************/ |
95 | ||
96 | AliITSLoader* itsl = (AliITSLoader*)rl->GetLoader("ITSLoader"); | |
97 | if (itsl == 0x0) { | |
98 | cerr<<"AliESDtest.C : Can not get the ITS loader"<<endl; | |
99 | return 3; | |
100 | } | |
101 | itsl->LoadRecPoints("read"); | |
102 | ||
103 | AliITS *dITS = (AliITS*)gAlice->GetDetector("ITS"); | |
104 | if (!dITS) { | |
105 | cerr<<"AliESDtest.C : Can not find the ITS detector !"<<endl; | |
ae982df3 | 106 | return 4; |
107 | } | |
c630aafd | 108 | AliITSgeom *geom = dITS->GetITSgeom(); |
ae982df3 | 109 | |
110 | //An instance of the ITS tracker | |
111 | AliITStrackerV2 itsTracker(geom); | |
9b859005 | 112 | {Double_t xyz[]={0.,0.,0.}, ers[]={0.005, 0.005, 0.010}; |
113 | itsTracker.SetVertex(xyz,ers);} | |
8c6a71ab | 114 | |
115 | //An instance of the ITS PID maker | |
c630aafd | 116 | Double_t parITS[]={34.,0.15,10.}; |
8c6a71ab | 117 | AliITSpidESD itsPID(parITS); |
79e94bf8 | 118 | |
e23730c7 | 119 | //An instance of the V0 finder |
120 | Double_t cuts[]={33, // max. allowed chi2 | |
121 | 0.16,// min. allowed negative daughter's impact parameter | |
122 | 0.05,// min. allowed positive daughter's impact parameter | |
123 | 0.080,// max. allowed DCA between the daughter tracks | |
124 | 0.998,// max. allowed cosine of V0's pointing angle | |
125 | 0.9, // min. radius of the fiducial volume | |
126 | 2.9 // max. radius of the fiducial volume | |
127 | }; | |
128 | AliV0vertexer vtxer(cuts); | |
129 | ||
130 | Double_t cts[]={33., // max. allowed chi2 | |
131 | 0.05, // min. allowed V0 impact parameter | |
132 | 0.008, // window around the Lambda mass | |
133 | 0.035, // min. allowed bachelor's impact parameter | |
134 | 0.10, // max. allowed DCA between a V0 and a track | |
135 | 0.9985, //max. allowed cosine of the cascade pointing angle | |
136 | 0.9, // min. radius of the fiducial volume | |
137 | 2.9 // max. radius of the fiducial volume | |
138 | }; | |
139 | AliCascadeVertexer cvtxer=AliCascadeVertexer(cts); | |
c630aafd | 140 | |
141 | /**** The TPC corner ********************/ | |
142 | ||
143 | AliTPCLoader* tpcl = (AliTPCLoader*)rl->GetLoader("TPCLoader"); | |
144 | if (tpcl == 0x0) { | |
145 | cerr<<"AliESDtest.C : can not get the TPC loader"<<endl; | |
146 | return 5; | |
147 | } | |
148 | tpcl->LoadRecPoints("read"); | |
149 | ||
150 | rl->CdGAFile(); | |
151 | AliTPCParam *par=(AliTPCParam *)gDirectory->Get("75x40_100x60_150x60"); | |
152 | if (!par) { | |
153 | cerr<<"TPC parameters have not been found !\n"; | |
79e94bf8 | 154 | return 6; |
155 | } | |
c630aafd | 156 | |
157 | //An instance of the TPC tracker | |
158 | AliTPCtracker tpcTracker(par); | |
159 | ||
160 | //An instance of the TPC PID maker | |
161 | Double_t parTPC[]={47.,0.10,10.}; | |
162 | AliTPCpidESD tpcPID(parTPC); | |
163 | ||
164 | ||
165 | /**** The TRD corner ********************/ | |
166 | ||
167 | AliLoader* trdl = rl->GetLoader("TRDLoader"); | |
168 | if (trdl == 0x0) { | |
169 | cerr<<"AliESDtest.C : can not get the TRD loader"<<endl; | |
170 | return 5; | |
171 | } | |
172 | trdl->LoadRecPoints("read"); | |
79e94bf8 | 173 | |
174 | //An instance of the TRD tracker | |
c630aafd | 175 | rl->CdGAFile(); |
176 | AliTRDtracker trdTracker(gFile); //galice.root file | |
79e94bf8 | 177 | |
c630aafd | 178 | /* |
79e94bf8 | 179 | //An instance of the TRD PID maker |
c630aafd | 180 | TFile* pidFile = TFile::Open("pid.root"); |
181 | if (!pidFile->IsOpen()) { | |
182 | cerr << "Can't get pid.root !\n"; | |
183 | return 7; | |
184 | } | |
185 | AliTRDPartID* trdPID = (AliTRDPartID*) pidFile->Get("AliTRDPartID"); | |
186 | if (!trdPID) { | |
187 | cerr << "Can't get PID object !\n"; | |
188 | return 8; | |
189 | } | |
190 | */ | |
191 | ||
192 | ||
193 | /**** The TOF corner ********************/ | |
194 | ||
195 | AliLoader* tofl = rl->GetLoader("TOFLoader"); | |
196 | if (tofl == 0x0) { | |
197 | cerr<<"AliESDtest.C : can not get the TOF loader"<<endl; | |
198 | return 5; | |
199 | } | |
200 | tofl->LoadDigits("read"); | |
201 | ||
202 | ||
203 | //Instance of the TOF PID maker | |
204 | Double_t parTOF[]={130.,5.}; | |
205 | AliTOFpidESD tofPID(parTOF); | |
206 | ||
207 | ||
208 | //rl->UnloadgAlice(); | |
209 | ||
79e94bf8 | 210 | |
211 | TFile *ef=TFile::Open("AliESDs.root","RECREATE"); | |
ae982df3 | 212 | if (!ef->IsOpen()) {cerr<<"Can't AliESDs.root !\n"; return 1;} |
213 | ||
214 | TStopwatch timer; | |
215 | Int_t rc=0; | |
c630aafd | 216 | if (nev>rl->GetNumberOfEvents()) nev=rl->GetNumberOfEvents(); |
ae982df3 | 217 | //The loop over events |
218 | for (Int_t i=0; i<nev; i++) { | |
219 | cerr<<"\n\nProcessing event number : "<<i<<endl; | |
220 | AliESD *event=new AliESD(); | |
ae982df3 | 221 | |
c630aafd | 222 | rl->GetEvent(i); |
223 | ||
bb2ceb1f | 224 | |
225 | //***** Initial path towards the primary vertex | |
c630aafd | 226 | TTree *tpcTree=tpcl->TreeR(); |
227 | if (!tpcTree) { | |
228 | cerr<<"Can't get the TPC cluster tree !\n"; | |
229 | return 4; | |
230 | } | |
231 | tpcTracker.LoadClusters(tpcTree); | |
ae982df3 | 232 | rc+=tpcTracker.Clusters2Tracks(event); |
233 | ||
c630aafd | 234 | TTree *itsTree=itsl->TreeR(); |
235 | if (!itsTree) { | |
bb2ceb1f | 236 | cerr<<"Can't get the ITS cluster tree !\n"; |
c630aafd | 237 | return 4; |
238 | } | |
239 | itsTracker.LoadClusters(itsTree); | |
ae982df3 | 240 | rc+=itsTracker.Clusters2Tracks(event); |
241 | ||
e23730c7 | 242 | |
bb2ceb1f | 243 | //***** Back propagation towards the outer barrel detectors |
ae982df3 | 244 | rc+=itsTracker.PropagateBack(event); |
e23730c7 | 245 | //itsPID.MakePID(event); |
ae982df3 | 246 | |
247 | rc+=tpcTracker.PropagateBack(event); | |
8c6a71ab | 248 | tpcPID.MakePID(event); |
249 | ||
c630aafd | 250 | TTree *trdTree=trdl->TreeR(); |
251 | if (!trdTree) { | |
bb2ceb1f | 252 | cerr<<"Can't get the TRD cluster tree !\n"; |
c630aafd | 253 | return 4; |
254 | } | |
255 | trdTracker.LoadClusters(trdTree); | |
79e94bf8 | 256 | rc+=trdTracker.PropagateBack(event); |
c630aafd | 257 | /* |
79e94bf8 | 258 | for (Int_t iTrack = 0; iTrack < event->GetNumberOfTracks(); iTrack++) { |
259 | AliESDtrack* track = event->GetTrack(iTrack); | |
260 | trdPID->MakePID(track); | |
261 | } | |
c630aafd | 262 | */ |
c630aafd | 263 | TTree *tofTree=tofl->TreeD(); |
264 | if (!tofTree) { | |
265 | cerr<<"Can't get the TOF cluster tree !\n"; | |
266 | return 4; | |
267 | } | |
268 | tofPID.LoadClusters(tofTree); | |
269 | tofPID.MakePID(event); | |
270 | tofPID.UnloadClusters(); | |
271 | ||
79e94bf8 | 272 | |
bb2ceb1f | 273 | |
274 | //***** Here is the combined PID | |
8c6a71ab | 275 | AliESDpid::MakePID(event); |
ae982df3 | 276 | |
bb2ceb1f | 277 | |
278 | ||
279 | //***** Now the final refit at the primary vertex... | |
280 | rc+=trdTracker.RefitInward(event); | |
281 | trdTracker.UnloadClusters(); | |
282 | ||
283 | rc+=tpcTracker.RefitInward(event); | |
284 | tpcTracker.UnloadClusters(); | |
285 | ||
286 | rc+=itsTracker.RefitInward(event); | |
287 | itsTracker.UnloadClusters(); | |
288 | ||
289 | ||
290 | ||
291 | //***** Hyperon reconstruction | |
292 | rc+=vtxer.Tracks2V0vertices(event); // V0 finding | |
293 | rc+=cvtxer.V0sTracks2CascadeVertices(event); // cascade finding | |
294 | ||
295 | ||
296 | ||
297 | //***** Some final manipulations with this event | |
ae982df3 | 298 | if (rc==0) { |
299 | Char_t ename[100]; | |
300 | sprintf(ename,"%d",i); | |
79e94bf8 | 301 | ef->cd(); |
ae982df3 | 302 | if (!event->Write(ename)) rc++; |
303 | } | |
304 | if (rc) { | |
305 | cerr<<"Something bad happened...\n"; | |
306 | } | |
307 | delete event; | |
308 | } | |
309 | timer.Stop(); timer.Print(); | |
310 | ||
c630aafd | 311 | //pidFile->Close(); |
312 | ||
ae982df3 | 313 | delete par; |
c630aafd | 314 | |
ae982df3 | 315 | ef->Close(); |
316 | ||
c630aafd | 317 | delete rl; |
318 | ||
ae982df3 | 319 | return rc; |
320 | } |