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6ad0bfa0 | 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 | ||
b2a60966 | 16 | /* $Id$ */ |
17 | ||
6ad0bfa0 | 18 | //_________________________________________________________________________ |
b2a60966 | 19 | // Implementation version v1 of the PHOS particle identifier |
7acf6008 | 20 | // Particle identification based on the |
148b2bba | 21 | // - RCPV: distance from CPV recpoint to EMCA recpoint. |
22 | // - TOF | |
23 | // - PCA: Principal Components Analysis.. | |
24 | // The identified particle has an identification number corresponding | |
25 | // to a 9 bits number: | |
bc0c084c | 26 | // -Bit 0 to 2: bit set if RCPV > CpvEmcDistance (each bit corresponds |
148b2bba | 27 | // to a different efficiency-purity point of the photon identification) |
bc0c084c | 28 | // -Bit 3 to 5: bit set if TOF < TimeGate (each bit corresponds |
148b2bba | 29 | // to a different efficiency-purity point of the photon identification) |
30 | // -Bit 6 to 9: bit set if Principal Components are | |
50739f15 | 31 | // inside an ellipse defined by the parameters a, b, c, x0 and y0. |
148b2bba | 32 | // (each bit corresponds to a different efficiency-purity point of the |
50739f15 | 33 | // photon identification) |
34 | // The PCA (Principal components analysis) needs a file that contains | |
35 | // a previous analysis of the correlations between the particles. This | |
bc0c084c | 36 | // file is $ALICE_ROOT/PHOS/PCA8pa15_0.5-100.root. Analysis done for |
50739f15 | 37 | // energies between 0.5 and 100 GeV. |
9fa5f1d0 | 38 | // A calibrated energy is calculated. The energy of the reconstructed |
50739f15 | 39 | // cluster is corrected with the formula A + B * E + C * E^2, whose |
bc0c084c | 40 | // parameters where obtained through the study of the reconstructed |
50739f15 | 41 | // energy distribution of monoenergetic photons. |
a4e98857 | 42 | // |
bc0c084c | 43 | // All the parameters (RCPV(2 rows-3 columns),TOF(1r-3c),PCA(5r-4c) |
50739f15 | 44 | // and calibration(1r-3c))are stored in a file called |
45 | // $ALICE_ROOT/PHOS/Parameters.dat. Each time that AliPHOSPIDv1 is | |
bc0c084c | 46 | // initialized, this parameters are copied to a Matrix (9,4), a |
50739f15 | 47 | // TMatrixD object. |
7acf6008 | 48 | // |
a4e98857 | 49 | // use case: |
50739f15 | 50 | // root [0] AliPHOSPIDv1 * p = new AliPHOSPIDv1("galice1.root") |
a4e98857 | 51 | // Warning in <TDatabasePDG::TDatabasePDG>: object already instantiated |
50739f15 | 52 | // // reading headers from file galice1.root and create RecParticles |
53 | // TrackSegments and RecPoints are used | |
54 | // // set file name for the branch RecParticles | |
f0a4c9e9 | 55 | // root [1] p->ExecuteTask("deb all time") |
50739f15 | 56 | // // available options |
57 | // // "deb" - prints # of reconstructed particles | |
58 | // // "deb all" - prints # and list of RecParticles | |
59 | // // "time" - prints benchmarking results | |
7acf6008 | 60 | // |
50739f15 | 61 | // root [2] AliPHOSPIDv1 * p2 = new AliPHOSPIDv1("galice1.root","v1",kTRUE) |
148b2bba | 62 | // Warning in <TDatabasePDG::TDatabasePDG>: object already instantiated |
50739f15 | 63 | // //Split mode. |
f0a4c9e9 | 64 | // root [3] p2->ExecuteTask() |
65 | // | |
50739f15 | 66 | |
f0a4c9e9 | 67 | |
7acf6008 | 68 | //*-- Author: Yves Schutz (SUBATECH) & Gines Martinez (SUBATECH) & |
148b2bba | 69 | // Gustavo Conesa April 2002 |
50739f15 | 70 | // PCA redesigned by Gustavo Conesa October 2002: |
71 | // The way of using the PCA has changed. Instead of 2 | |
72 | // files with the PCA, each one with different energy ranges | |
73 | // of application, we use the wide one (0.5-100 GeV), and instead | |
bc0c084c | 74 | // of fixing 3 ellipses for different ranges of energy, it has been |
50739f15 | 75 | // studied the dependency of the ellipses parameters with the |
76 | // energy, and they are implemented in the code as a funtion | |
77 | // of the energy. | |
78 | // | |
79 | // | |
80 | // | |
6ad0bfa0 | 81 | // --- ROOT system --- |
7acf6008 | 82 | #include "TROOT.h" |
83 | #include "TTree.h" | |
84 | #include "TFile.h" | |
85 | #include "TF2.h" | |
86 | #include "TFormula.h" | |
87 | #include "TCanvas.h" | |
88 | #include "TFolder.h" | |
89 | #include "TSystem.h" | |
90 | #include "TBenchmark.h" | |
148b2bba | 91 | #include "TMatrixD.h" |
92 | #include "TPrincipal.h" | |
93 | #include "TSystem.h" | |
94 | ||
6ad0bfa0 | 95 | // --- Standard library --- |
96 | ||
75a6835b | 97 | #include <Riostream.h> |
98 | ||
6ad0bfa0 | 99 | // --- AliRoot header files --- |
100 | ||
7acf6008 | 101 | #include "AliRun.h" |
102 | #include "AliGenerator.h" | |
103 | #include "AliPHOS.h" | |
26d4b141 | 104 | #include "AliPHOSPIDv1.h" |
7acf6008 | 105 | #include "AliPHOSClusterizerv1.h" |
6ad0bfa0 | 106 | #include "AliPHOSTrackSegment.h" |
7acf6008 | 107 | #include "AliPHOSTrackSegmentMakerv1.h" |
6ad0bfa0 | 108 | #include "AliPHOSRecParticle.h" |
7b7c1533 | 109 | #include "AliPHOSGeometry.h" |
110 | #include "AliPHOSGetter.h" | |
6ad0bfa0 | 111 | |
26d4b141 | 112 | ClassImp( AliPHOSPIDv1) |
6ad0bfa0 | 113 | |
1cb7c1ee | 114 | //____________________________________________________________________________ |
115 | AliPHOSPIDv1::AliPHOSPIDv1():AliPHOSPID() | |
116 | { | |
a4e98857 | 117 | // default ctor |
148b2bba | 118 | |
8d0f3f77 | 119 | InitParameters() ; |
92f521a9 | 120 | fDefaultInit = kTRUE ; |
121 | ||
7acf6008 | 122 | } |
123 | ||
124 | //____________________________________________________________________________ | |
fbf811ec | 125 | AliPHOSPIDv1::AliPHOSPIDv1(const char * headerFile,const char * name, const Bool_t toSplit) |
126 | :AliPHOSPID(headerFile, name,toSplit) | |
7acf6008 | 127 | { |
a4e98857 | 128 | //ctor with the indication on where to look for the track segments |
7b7c1533 | 129 | |
8d0f3f77 | 130 | InitParameters() ; |
131 | ||
2bd5457f | 132 | Init() ; |
92f521a9 | 133 | fDefaultInit = kFALSE ; |
7acf6008 | 134 | |
135 | } | |
7b7c1533 | 136 | |
7acf6008 | 137 | //____________________________________________________________________________ |
138 | AliPHOSPIDv1::~AliPHOSPIDv1() | |
139 | { | |
79bb1b62 | 140 | // dtor |
92f521a9 | 141 | // fDefaultInit = kTRUE if PID created by default ctor (to get just the parameters) |
9fa5f1d0 | 142 | |
1f0e7ccd | 143 | delete [] fX ; // Principal input |
144 | delete [] fP ; // Principal components | |
145 | delete [] fPPi0 ; // Pi0 Principal components | |
8d0f3f77 | 146 | |
92f521a9 | 147 | if (!fDefaultInit) { |
fbf811ec | 148 | // AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ; |
92f521a9 | 149 | // remove the task from the folder list |
fbf811ec | 150 | // gime->RemoveTask("P",GetName()) ; |
151 | // TString name(GetName()) ; | |
152 | // name.ReplaceAll("pid", "clu") ; | |
153 | // gime->RemoveTask("C",name) ; | |
92f521a9 | 154 | |
fbf811ec | 155 | // // remove the data from the folder list |
156 | // name = GetName() ; | |
157 | // name.Remove(name.Index(":")) ; | |
158 | // gime->RemoveObjects("RE", name) ; // EMCARecPoints | |
159 | // gime->RemoveObjects("RC", name) ; // CPVRecPoints | |
160 | // gime->RemoveObjects("T", name) ; // TrackSegments | |
161 | // gime->RemoveObjects("P", name) ; // RecParticles | |
92f521a9 | 162 | |
fbf811ec | 163 | // // Delete gAlice |
164 | // gime->CloseFile() ; | |
92f521a9 | 165 | |
166 | fSplitFile = 0 ; | |
79bb1b62 | 167 | } |
7acf6008 | 168 | } |
2bd5457f | 169 | |
a496c46c | 170 | //____________________________________________________________________________ |
171 | const TString AliPHOSPIDv1::BranchName() const | |
172 | { | |
173 | TString branchName(GetName() ) ; | |
174 | branchName.Remove(branchName.Index(Version())-1) ; | |
175 | return branchName ; | |
176 | } | |
177 | ||
148b2bba | 178 | //____________________________________________________________________________ |
179 | void AliPHOSPIDv1::Init() | |
180 | { | |
181 | // Make all memory allocations that are not possible in default constructor | |
182 | // Add the PID task to the list of PHOS tasks | |
a496c46c | 183 | |
148b2bba | 184 | if ( strcmp(GetTitle(), "") == 0 ) |
185 | SetTitle("galice.root") ; | |
148b2bba | 186 | |
fbf811ec | 187 | TString branchname(GetName()) ; |
188 | branchname.Remove(branchname.Index(Version())-1) ; | |
189 | AliPHOSGetter * gime = AliPHOSGetter::GetInstance(GetTitle(),branchname.Data(),fToSplit ) ; | |
190 | ||
191 | // gime->SetRecParticlesTitle(BranchName()) ; | |
148b2bba | 192 | if ( gime == 0 ) { |
21cd0c07 | 193 | Error("Init", "Could not obtain the Getter object !" ) ; |
148b2bba | 194 | return ; |
195 | } | |
fbf811ec | 196 | |
197 | fSplitFile = 0 ; | |
198 | if(fToSplit){ | |
199 | //First - extract full path if necessary | |
200 | TString fileName(GetTitle()) ; | |
201 | Ssiz_t islash = fileName.Last('/') ; | |
202 | if(islash<fileName.Length()) | |
203 | fileName.Remove(islash+1,fileName.Length()) ; | |
204 | else | |
205 | fileName="" ; | |
206 | fileName+="PHOS.RecData." ; | |
207 | if((strcmp(branchname.Data(),"Default")!=0)&&(strcmp(branchname.Data(),"")!=0)){ | |
208 | fileName+=branchname.Data() ; | |
209 | fileName+="." ; | |
210 | } | |
211 | fileName+="root" ; | |
212 | fSplitFile = static_cast<TFile*>(gROOT->GetFile(fileName.Data())); | |
213 | if(!fSplitFile) | |
214 | fSplitFile = TFile::Open(fileName.Data(),"update") ; | |
215 | } | |
a496c46c | 216 | |
148b2bba | 217 | gime->PostPID(this) ; |
218 | // create a folder on the white board //YSAlice/WhiteBoard/RecParticles/PHOS/recparticlesName | |
fbf811ec | 219 | gime->PostRecParticles(branchname) ; |
148b2bba | 220 | |
221 | } | |
8d0f3f77 | 222 | |
223 | //____________________________________________________________________________ | |
224 | void AliPHOSPIDv1::InitParameters() | |
225 | { | |
fbf811ec | 226 | // fFrom = "" ; |
227 | // fHeaderFileName = GetTitle() ; | |
228 | // TString name(GetName()) ; | |
229 | // if (name.IsNull()) | |
230 | // name = "Default" ; | |
231 | // fTrackSegmentsTitle = name ; | |
232 | // fRecPointsTitle = name ; | |
233 | // fRecParticlesTitle = name ; | |
234 | // name.Append(":") ; | |
235 | // name.Append(Version()) ; | |
236 | // SetName(name) ; | |
8d0f3f77 | 237 | fRecParticlesInRun = 0 ; |
8d0f3f77 | 238 | fNEvent = 0 ; |
fbf811ec | 239 | // fClusterizer = 0 ; |
240 | // fTSMaker = 0 ; | |
8d0f3f77 | 241 | fRecParticlesInRun = 0 ; |
fbf811ec | 242 | TString pidName( GetName()) ; |
243 | if (pidName.IsNull() ) | |
244 | pidName = "Default" ; | |
245 | pidName.Append(":") ; | |
246 | pidName.Append(Version()) ; | |
247 | SetName(pidName) ; | |
bc0c084c | 248 | fPi0Analysis = kFALSE ; |
9fa5f1d0 | 249 | SetParameters() ; // fill the parameters matrix from parameters file |
8d0f3f77 | 250 | } |
251 | ||
69183710 | 252 | //____________________________________________________________________________ |
bc0c084c | 253 | const Float_t AliPHOSPIDv1::GetCpvtoEmcDistanceCut(const Float_t e, const TString Axis) const |
148b2bba | 254 | { |
bc0c084c | 255 | // Get CpvtoEmcDistance Cut depending on the cluster energy, axis and |
256 | // Purity-Efficiency point | |
257 | ||
258 | Int_t i = -1; | |
1f0e7ccd | 259 | if (Axis.Contains("X")) i = 1; |
260 | else if (Axis.Contains("Z")) i = 2; | |
9fa5f1d0 | 261 | else |
bc0c084c | 262 | Error("GetCpvtoEmcDistanceCut"," Invalid axis option "); |
263 | ||
264 | Float_t a = (*fParameters)(i,0) ; | |
265 | Float_t b = (*fParameters)(i,1) ; | |
266 | Float_t c = (*fParameters)(i,2) ; | |
267 | ||
268 | Float_t sig = a + TMath::Exp(b-c*e); | |
269 | return sig; | |
148b2bba | 270 | } |
271 | //____________________________________________________________________________ | |
272 | ||
bc0c084c | 273 | const Double_t AliPHOSPIDv1::GetTimeGate(const Int_t Eff_Pur) const |
148b2bba | 274 | { |
bc0c084c | 275 | // Get TimeGate parameter depending on Purity-Efficiency point |
9fa5f1d0 | 276 | |
bc0c084c | 277 | if(Eff_Pur>2 || Eff_Pur<0) |
278 | Error("GetTimeGate","Invalid Efficiency-Purity choice %d",Eff_Pur); | |
1f0e7ccd | 279 | return (*fParameters)(3,Eff_Pur) ; |
f0a4c9e9 | 280 | |
148b2bba | 281 | } |
282 | //_____________________________________________________________________________ | |
50739f15 | 283 | const Float_t AliPHOSPIDv1::GetDistance(AliPHOSEmcRecPoint * emc,AliPHOSRecPoint * cpv, Option_t * Axis)const |
69183710 | 284 | { |
285 | // Calculates the distance between the EMC RecPoint and the PPSD RecPoint | |
148b2bba | 286 | |
7b7c1533 | 287 | const AliPHOSGeometry * geom = AliPHOSGetter::GetInstance()->PHOSGeometry() ; |
69183710 | 288 | TVector3 vecEmc ; |
7acf6008 | 289 | TVector3 vecCpv ; |
148b2bba | 290 | if(cpv){ |
291 | emc->GetLocalPosition(vecEmc) ; | |
292 | cpv->GetLocalPosition(vecCpv) ; | |
293 | if(emc->GetPHOSMod() == cpv->GetPHOSMod()){ | |
294 | // Correct to difference in CPV and EMC position due to different distance to center. | |
295 | // we assume, that particle moves from center | |
296 | Float_t dCPV = geom->GetIPtoOuterCoverDistance(); | |
297 | Float_t dEMC = geom->GetIPtoCrystalSurface() ; | |
298 | dEMC = dEMC / dCPV ; | |
299 | vecCpv = dEMC * vecCpv - vecEmc ; | |
300 | if (Axis == "X") return vecCpv.X(); | |
301 | if (Axis == "Y") return vecCpv.Y(); | |
302 | if (Axis == "Z") return vecCpv.Z(); | |
303 | if (Axis == "R") return vecCpv.Mag(); | |
7acf6008 | 304 | } |
148b2bba | 305 | |
306 | return 100000000 ; | |
307 | } | |
7acf6008 | 308 | return 100000000 ; |
69183710 | 309 | } |
bc0c084c | 310 | //____________________________________________________________________________ |
311 | const Int_t AliPHOSPIDv1::GetCPVBit(AliPHOSEmcRecPoint * emc,AliPHOSRecPoint * cpv,const Int_t EffPur, const Float_t e) const | |
312 | { | |
313 | if(EffPur>2 || EffPur<0) | |
314 | Error("GetCPVBit","Invalid Efficiency-Purity choice %d",EffPur); | |
315 | ||
316 | Float_t sigX = GetCpvtoEmcDistanceCut(e,"X"); | |
317 | Float_t sigZ = GetCpvtoEmcDistanceCut(e,"Z"); | |
318 | ||
319 | Float_t deltaX = TMath::Abs(GetDistance(emc, cpv, "X")); | |
320 | Float_t deltaZ = TMath::Abs(GetDistance(emc, cpv, "Z")); | |
321 | ||
322 | if((deltaX>sigX*(EffPur+1))|(deltaZ>sigZ*(EffPur+1))) | |
323 | return 1;//Neutral | |
324 | else | |
325 | return 0;//Charged | |
326 | ||
327 | } | |
69183710 | 328 | |
6ad0bfa0 | 329 | //____________________________________________________________________________ |
50739f15 | 330 | const Double_t AliPHOSPIDv1::GetCalibratedEnergy(const Float_t e) const |
331 | { | |
332 | // It calibrates Energy depending on the recpoint energy. | |
333 | // The energy of the reconstructed cluster is corrected with | |
334 | // the formula A + B* E + C* E^2, whose parameters where obtained | |
335 | // through the study of the reconstructed energy distribution of | |
336 | // monoenergetic photons. | |
337 | ||
338 | Double_t p[]={0.,0.,0.}; | |
339 | Int_t i; | |
1f0e7ccd | 340 | for(i=0;i<3;i++) p[i]= (*fParameters)(0,i); |
50739f15 | 341 | Double_t enerec = p[0] + p[1]* e+ p[2] * e * e; |
9fa5f1d0 | 342 | return enerec ; |
343 | ||
344 | } | |
345 | //____________________________________________________________________________ | |
bc0c084c | 346 | const Int_t AliPHOSPIDv1::GetPrincipalBit(const Double_t* P,const Int_t eff_pur, const Float_t E)const |
148b2bba | 347 | { |
50739f15 | 348 | //Is the particle inside de PCA ellipse? |
349 | ||
1f0e7ccd | 350 | Int_t prinbit = 0 ; |
50739f15 | 351 | Double_t A = GetEllipseParameter("a", E); |
352 | Double_t B = GetEllipseParameter("b", E); | |
353 | Double_t C = GetEllipseParameter("c", E); | |
354 | Double_t X_center = GetEllipseParameter("x0", E); | |
355 | Double_t Y_center = GetEllipseParameter("y0", E); | |
148b2bba | 356 | |
50739f15 | 357 | Double_t R = TMath::Power((P[0] - X_center)/A,2) + |
358 | TMath::Power((P[1] - Y_center)/B,2) + | |
359 | C*(P[0] - X_center)*(P[1] - Y_center)/(A*B) ; | |
360 | //3 different ellipses defined | |
1f0e7ccd | 361 | if((eff_pur==2)&&(R <1./2.)) prinbit= 1; |
362 | if((eff_pur==1)&&(R <2. )) prinbit= 1; | |
363 | if((eff_pur==0)&&(R <9./2.)) prinbit= 1; | |
50739f15 | 364 | |
21cd0c07 | 365 | if(R<0) |
1f0e7ccd | 366 | Error("GetPrincipalBit", "Negative square? R=%f \n",R) ; |
367 | ||
368 | return prinbit; | |
148b2bba | 369 | |
148b2bba | 370 | } |
1f0e7ccd | 371 | //____________________________________________________________________________ |
372 | const Int_t AliPHOSPIDv1::GetPrincipalPi0Bit(const Double_t* P,const Int_t eff_pur, const Float_t E)const | |
373 | { | |
374 | //Is the particle inside de Pi0 PCA ellipse? | |
148b2bba | 375 | |
1f0e7ccd | 376 | Int_t prinbit = 0 ; |
377 | Double_t A = GetEllipseParameterPi0("a", E); | |
378 | Double_t B = GetEllipseParameterPi0("b", E); | |
379 | Double_t C = GetEllipseParameterPi0("c", E); | |
380 | Double_t X_center = GetEllipseParameterPi0("x0", E); | |
381 | Double_t Y_center = GetEllipseParameterPi0("y0", E); | |
382 | ||
383 | Double_t R = TMath::Power((P[0] - X_center)/A,2) + | |
384 | TMath::Power((P[1] - Y_center)/B,2) + | |
385 | C*(P[0] - X_center)*(P[1] - Y_center)/(A*B) ; | |
386 | //3 different ellipses defined | |
387 | if((eff_pur==2)&&(R <1./2.)) prinbit= 1; | |
388 | if((eff_pur==1)&&(R <2. )) prinbit= 1; | |
389 | if((eff_pur==0)&&(R <9./2.)) prinbit= 1; | |
390 | ||
391 | if(R<0) | |
392 | Error("GetPrincipalPi0Bit", "Negative square?") ; | |
393 | ||
394 | return prinbit; | |
395 | ||
396 | } | |
148b2bba | 397 | //_____________________________________________________________________________ |
bc0c084c | 398 | void AliPHOSPIDv1::SetCpvtoEmcDistanceCutParameters(Float_t e, Int_t Eff_Pur, TString Axis,Float_t cut) |
148b2bba | 399 | { |
bc0c084c | 400 | // Set the parameters to calculate Cpvto EmcDistanceCut depending on the cluster energy and |
401 | // Purity-Efficiency point | |
148b2bba | 402 | |
bc0c084c | 403 | if(Eff_Pur>2 || Eff_Pur<0) |
404 | Error("SetCpvtoEmcDistanceCutParameters","Invalid Efficiency-Purity choice %d",Eff_Pur); | |
92f521a9 | 405 | |
bc0c084c | 406 | Int_t i = -1; |
1f0e7ccd | 407 | if (Axis.Contains("X")) i = 1; |
408 | else if(Axis.Contains("Z")) i = 2; | |
bc0c084c | 409 | else |
410 | Error("SetCpvtoEmcDistanceCutParameters"," Invalid axis option"); | |
411 | ||
412 | (*fParameters)(i,Eff_Pur) = cut ; | |
f0a4c9e9 | 413 | } |
414 | //_____________________________________________________________________________ | |
bc0c084c | 415 | void AliPHOSPIDv1::SetTimeGate(Int_t Eff_Pur, Float_t gate) |
f0a4c9e9 | 416 | { |
f0a4c9e9 | 417 | // Set the parameter TimeGate depending on the cluster energy and |
bc0c084c | 418 | // Purity-Efficiency point |
419 | if(Eff_Pur>2 || Eff_Pur<0) | |
420 | Error("SetTimeGate","Invalid Efficiency-Purity choice %d",Eff_Pur); | |
421 | ||
1f0e7ccd | 422 | (*fParameters)(3,Eff_Pur)= gate ; |
f0a4c9e9 | 423 | } |
a496c46c | 424 | //_____________________________________________________________________________ |
50739f15 | 425 | void AliPHOSPIDv1::SetParameters() |
a496c46c | 426 | { |
427 | // PCA : To do the Principal Components Analysis it is necessary | |
428 | // the Principal file, which is opened here | |
429 | fX = new double[7]; // Data for the PCA | |
f0a4c9e9 | 430 | fP = new double[7]; // Eigenvalues of the PCA |
1f0e7ccd | 431 | fPPi0 = new double[7]; // Eigenvalues of the Pi0 PCA |
432 | ||
433 | // Read photon principals from the photon file | |
e0ed2e49 | 434 | |
1f0e7ccd | 435 | fFileName = "$ALICE_ROOT/PHOS/PCA8pa15_0.5-100.root" ; |
50739f15 | 436 | TFile f( fFileName.Data(), "read" ) ; |
a496c46c | 437 | fPrincipal = dynamic_cast<TPrincipal*> (f.Get("principal")) ; |
438 | f.Close() ; | |
1f0e7ccd | 439 | |
440 | // Read pi0 principals from the pi0 file | |
441 | ||
442 | fFileNamePi0 = "$ALICE_ROOT/PHOS/PCA_pi0_40-120.root" ; | |
443 | TFile fPi0( fFileNamePi0.Data(), "read" ) ; | |
444 | fPrincipalPi0 = dynamic_cast<TPrincipal*> (fPi0.Get("principal")) ; | |
445 | fPi0.Close() ; | |
446 | ||
bc0c084c | 447 | // Open parameters file and initialization of the Parameters matrix. |
448 | // In the File Parameters.dat are all the parameters. These are introduced | |
449 | // in a matrix of 9x4 | |
50739f15 | 450 | // |
451 | // All the parameters defined in this file are, in order of row: | |
bc0c084c | 452 | // -CpvtoEmcDistanceCut (2 row (x and z) and 3 columns, each one depending |
453 | // on the parameter of the funtion that sets the cut in x or z. | |
454 | // -TimeGate, 1 row and 3 columns (3 efficiency-purty cuts) | |
455 | // -PCA, parameters of the functions that | |
50739f15 | 456 | // calculate the ellipse parameters, x0,y0,a, b, c. These 5 parameters |
bc0c084c | 457 | // (5 rows) depend on 4 parameters (columns). |
458 | // -Finally there is a row with the energy calibration parameters, | |
459 | // 3 parameters. | |
460 | ||
1f0e7ccd | 461 | fFileNamePar = gSystem->ExpandPathName("$ALICE_ROOT/PHOS/Parameters.YVK.dat"); |
462 | fParameters = new TMatrixD(14,4) ; | |
463 | const Int_t maxLeng=255; | |
464 | char string[maxLeng]; | |
465 | ||
466 | // Open a text file with PID parameters | |
467 | FILE *fd = fopen(fFileNamePar.Data(),"r"); | |
468 | if (!fd) | |
469 | Fatal("SetParameter","File %s with a PID parameters cannot be opened\n", | |
470 | fFileNamePar.Data()); | |
471 | ||
472 | Int_t i=0; | |
473 | // Read parameter file line-by-line and skip empty line and comments | |
474 | while (fgets(string,maxLeng,fd) != NULL) { | |
475 | if (string[0] == '\n' ) continue; | |
476 | if (string[0] == '!' ) continue; | |
477 | sscanf(string, "%lf %lf %lf %lf", | |
478 | &(*fParameters)(i,0), &(*fParameters)(i,1), | |
bc0c084c | 479 | &(*fParameters)(i,2), &(*fParameters)(i,3)); |
1f0e7ccd | 480 | i++; |
a496c46c | 481 | } |
1f0e7ccd | 482 | fclose(fd); |
f0a4c9e9 | 483 | } |
f0a4c9e9 | 484 | |
f0a4c9e9 | 485 | |
50739f15 | 486 | //________________________________________________________________________ |
487 | void AliPHOSPIDv1::SetEllipseParameter(TString Param, Int_t i, Double_t par) | |
488 | { | |
489 | // Set the parameter "i" that is needed to calculate the ellipse | |
490 | // parameter "Param". | |
bc0c084c | 491 | |
50739f15 | 492 | Int_t p= -1; |
1f0e7ccd | 493 | if (Param.Contains("a")) p=4; |
494 | else if(Param.Contains("b")) p=5; | |
495 | else if(Param.Contains("c")) p=6; | |
496 | else if(Param.Contains("x0"))p=7; | |
497 | else if(Param.Contains("y0"))p=8; | |
50739f15 | 498 | if((i>4)||(i<0)) |
21cd0c07 | 499 | Error("SetEllipseParameter", "No parameter with index %d", i) ; |
50739f15 | 500 | else if(p==-1) |
21cd0c07 | 501 | Error("SetEllipseParameter", "No parameter with name %s", Param.Data() ) ; |
50739f15 | 502 | else |
503 | (*fParameters)(p,i) = par ; | |
504 | } | |
505 | //________________________________________________________________________ | |
1f0e7ccd | 506 | void AliPHOSPIDv1::SetEllipseParameterPi0(TString Param, Int_t i, Double_t par) |
507 | { | |
508 | // Set the parameter "i" that is needed to calculate the ellipse | |
509 | // parameter "Param". | |
510 | if(!fPi0Analysis) Error("SetPi0EllipseParameter", "Pi 0 Analysis is off") ; | |
511 | Int_t p= -1; | |
512 | if (Param.Contains("a")) p=9; | |
513 | else if(Param.Contains("b")) p=10; | |
514 | else if(Param.Contains("c")) p=11; | |
515 | else if(Param.Contains("x0"))p=12; | |
516 | else if(Param.Contains("y0"))p=13; | |
517 | if((i>4)||(i<0)) | |
518 | Error("SetPi0EllipseParameter", "No parameter with index %d", i) ; | |
519 | else if(p==-1) | |
520 | Error("SetPi0EllipseParameter", "No parameter with name %s", Param.Data() ) ; | |
521 | else | |
522 | (*fParameters)(p,i) = par ; | |
523 | } | |
524 | //________________________________________________________________________ | |
50739f15 | 525 | const Double_t AliPHOSPIDv1::GetParameterToCalculateEllipse(const TString Param, const Int_t i) const |
526 | { | |
527 | // Get the parameter "i" that is needed to calculate the ellipse | |
528 | // parameter "Param". | |
529 | ||
530 | Int_t p= -1; | |
531 | Double_t par = -1; | |
532 | ||
1f0e7ccd | 533 | if (Param.Contains("a")) p=4; |
534 | else if(Param.Contains("b")) p=5; | |
535 | else if(Param.Contains("c")) p=6; | |
536 | else if(Param.Contains("x0"))p=7; | |
537 | else if(Param.Contains("y0"))p=8; | |
50739f15 | 538 | |
539 | if((i>4)||(i<0)) | |
21cd0c07 | 540 | Error("GetParameterToCalculateEllipse", "No parameter with index", i) ; |
50739f15 | 541 | else if(p==-1) |
21cd0c07 | 542 | Error("GetParameterToCalculateEllipse", "No parameter with name %s", Param.Data() ) ; |
50739f15 | 543 | else |
544 | par = (*fParameters)(p,i) ; | |
545 | ||
546 | return par; | |
547 | ||
1f0e7ccd | 548 | } |
549 | //____________________________________________________________________________ | |
550 | const Double_t AliPHOSPIDv1::GetParameterToCalculatePi0Ellipse(const TString Param, const Int_t i) const | |
551 | { | |
552 | // Get the parameter "i" that is needed to calculate the ellipse | |
553 | // parameter "Param". | |
554 | ||
555 | if(!fPi0Analysis) Error("GetParameterToCalculatePi0Ellipse", "Pi 0 Analysis is off") ; | |
556 | ||
557 | Int_t p= -1; | |
558 | Double_t par = -1; | |
559 | ||
560 | if(Param.Contains("a")) p=9; | |
561 | if(Param.Contains("b")) p=10; | |
562 | if(Param.Contains("c")) p=11; | |
563 | if(Param.Contains("x0"))p=12; | |
564 | if(Param.Contains("y0"))p=13; | |
565 | ||
566 | if((i>4)||(i<0)) | |
567 | Error("GetParameterToCalculatePi0Ellipse", "No parameter with index", i) ; | |
568 | else if(p==-1) | |
569 | Error("GetParameterToCalculatePi0Ellipse", "No parameter with name %s", Param.Data() ) ; | |
570 | else | |
571 | par = (*fParameters)(p,i) ; | |
572 | ||
573 | return par; | |
574 | ||
50739f15 | 575 | } |
576 | //____________________________________________________________________________ | |
577 | void AliPHOSPIDv1::SetCalibrationParameter(Int_t i,Double_t param) | |
578 | { | |
1f0e7ccd | 579 | (*fParameters)(0,i) = param ; |
50739f15 | 580 | } |
581 | //____________________________________________________________________________ | |
582 | const Double_t AliPHOSPIDv1::GetCalibrationParameter(const Int_t i) const | |
583 | { | |
1f0e7ccd | 584 | Float_t param = (*fParameters)(0,i); |
50739f15 | 585 | return param; |
586 | } | |
587 | //____________________________________________________________________________ | |
1f0e7ccd | 588 | // const Double_t AliPHOSPIDv1::GetEllipseParameter(const TString Param,Float_t E) const |
589 | // { | |
590 | // // Calculates the parameter Param of the ellipse | |
bc0c084c | 591 | |
1f0e7ccd | 592 | // Double_t p[4]={0.,0.,0.,0.}; |
593 | // Double_t value = 0.0; | |
594 | // Int_t i; | |
50739f15 | 595 | |
1f0e7ccd | 596 | // if(Param.Contains("a")){ |
597 | // for(i=0;i<4;i++)p[i]=(*fParameters)(4,i); | |
598 | // if(E>70.)E=70.; | |
599 | // } | |
50739f15 | 600 | |
1f0e7ccd | 601 | // else if(Param.Contains("b")){ |
602 | // for(i=0;i<4;i++)p[i]=(*fParameters)(5,i); | |
603 | // if(E>70.)E=70.; | |
604 | // } | |
50739f15 | 605 | |
1f0e7ccd | 606 | // else if(Param.Contains("c")) |
607 | // for(i=0;i<4;i++)p[i]=(*fParameters)(6,i); | |
50739f15 | 608 | |
1f0e7ccd | 609 | // else if(Param.Contains("x0")){ |
610 | // for(i=0;i<4;i++)p[i]=(*fParameters)(7,i); | |
611 | // if(E<1.)E=1.1; | |
612 | // } | |
613 | // else if(Param.Contains("y0")) | |
614 | // for(i=0;i<4;i++)p[i]=(*fParameters)(8,i); | |
50739f15 | 615 | |
1f0e7ccd | 616 | // value = p[0]/TMath::Sqrt(E)+p[1]*E+p[2]*E*E+p[3]; |
617 | // return value; | |
618 | // } | |
619 | ||
620 | //____________________________________________________________________________ | |
621 | const Double_t AliPHOSPIDv1::GetEllipseParameter(const TString Param,Float_t E) const | |
622 | { | |
623 | // Calculates the parameter Param of the pi0 ellipse | |
624 | ||
625 | Double_t p[3] = {0.,0.,0.}; | |
626 | Double_t value = 0.0; | |
627 | Int_t i; | |
628 | ||
629 | if(Param.Contains("a")) | |
630 | for(i=0;i<3;i++)p[i]=(*fParameters)(4,i); | |
631 | else if(Param.Contains("b")) | |
632 | for(i=0;i<3;i++)p[i]=(*fParameters)(5,i); | |
633 | else if(Param.Contains("c")) | |
634 | for(i=0;i<3;i++)p[i]=(*fParameters)(6,i); | |
635 | else if(Param.Contains("x0")) | |
636 | for(i=0;i<3;i++)p[i]=(*fParameters)(7,i); | |
637 | else if(Param.Contains("y0")) | |
638 | for(i=0;i<3;i++)p[i]=(*fParameters)(8,i); | |
639 | ||
640 | value = p[0] + p[1]*E + p[2]*E*E; | |
641 | return value; | |
642 | } | |
643 | //____________________________________________________________________________ | |
644 | const Double_t AliPHOSPIDv1::GetEllipseParameterPi0(const TString Param,Float_t E) const | |
645 | { | |
646 | // Calculates the parameter Param of the pi0 ellipse | |
647 | ||
648 | Double_t p[3] = {0.,0.,0.}; | |
649 | Double_t value = 0.0; | |
650 | Int_t i; | |
651 | ||
652 | if(Param.Contains("a")) | |
653 | for(i=0;i<3;i++)p[i]=(*fParameters)(9,i); | |
654 | else if(Param.Contains("b")) | |
655 | for(i=0;i<3;i++)p[i]=(*fParameters)(10,i); | |
656 | else if(Param.Contains("c")) | |
657 | for(i=0;i<3;i++)p[i]=(*fParameters)(11,i); | |
658 | else if(Param.Contains("x0")) | |
659 | for(i=0;i<3;i++)p[i]=(*fParameters)(12,i); | |
660 | else if(Param.Contains("y0")) | |
661 | for(i=0;i<3;i++)p[i]=(*fParameters)(13,i); | |
662 | ||
663 | value = p[0] + p[1]*E + p[2]*E*E; | |
50739f15 | 664 | return value; |
665 | } | |
148b2bba | 666 | //____________________________________________________________________________ |
667 | ||
7acf6008 | 668 | void AliPHOSPIDv1::Exec(Option_t * option) |
6ad0bfa0 | 669 | { |
f035f6ce | 670 | //Steering method |
9688c1dd | 671 | |
bf8f1fbd | 672 | if( strcmp(GetName(), "")== 0 ) |
7acf6008 | 673 | Init() ; |
bf8f1fbd | 674 | |
675 | if(strstr(option,"tim")) | |
7acf6008 | 676 | gBenchmark->Start("PHOSPID"); |
bf8f1fbd | 677 | |
678 | if(strstr(option,"print")) { | |
7b7c1533 | 679 | Print("") ; |
680 | return ; | |
bf8f1fbd | 681 | } |
9688c1dd | 682 | |
148b2bba | 683 | |
fbf811ec | 684 | AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ; |
685 | if(gime->BranchExists("RecParticles") ) | |
686 | return ; | |
1f0e7ccd | 687 | Int_t nevents = gime->MaxEvent() ; |
7b7c1533 | 688 | Int_t ievent ; |
fbf811ec | 689 | |
7b7c1533 | 690 | for(ievent = 0; ievent < nevents; ievent++){ |
a496c46c | 691 | gime->Event(ievent,"R") ; |
148b2bba | 692 | |
1f0e7ccd | 693 | if(gime->TrackSegments() && //Skip events, where no track segments made |
694 | gime->TrackSegments()->GetEntriesFast()) { | |
695 | MakeRecParticles() ; | |
696 | WriteRecParticles(ievent); | |
697 | if(strstr(option,"deb")) | |
698 | PrintRecParticles(option) ; | |
699 | //increment the total number of rec particles per run | |
700 | fRecParticlesInRun+=gime->RecParticles(BranchName())->GetEntriesFast() ; | |
701 | } | |
7acf6008 | 702 | } |
9688c1dd | 703 | |
7acf6008 | 704 | if(strstr(option,"tim")){ |
705 | gBenchmark->Stop("PHOSPID"); | |
21cd0c07 | 706 | Info("Exec", "took %f seconds for PID %f seconds per event", |
707 | gBenchmark->GetCpuTime("PHOSPID"), | |
708 | gBenchmark->GetCpuTime("PHOSPID")/nevents) ; | |
709 | } | |
7b7c1533 | 710 | } |
711 | ||
7acf6008 | 712 | //____________________________________________________________________________ |
713 | void AliPHOSPIDv1::MakeRecParticles(){ | |
714 | ||
b2a60966 | 715 | // Makes a RecParticle out of a TrackSegment |
148b2bba | 716 | |
7b7c1533 | 717 | AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ; |
fbf811ec | 718 | TObjArray * emcRecPoints = gime->EmcRecPoints() ; |
719 | TObjArray * cpvRecPoints = gime->CpvRecPoints() ; | |
720 | TClonesArray * trackSegments = gime->TrackSegments() ; | |
148b2bba | 721 | if ( !emcRecPoints || !cpvRecPoints || !trackSegments ) { |
f1611b7c | 722 | Fatal("MakeRecParticles", "RecPoints or TrackSegments not found !") ; |
148b2bba | 723 | } |
fbf811ec | 724 | TClonesArray * recParticles = gime->RecParticles() ; |
01a599c9 | 725 | recParticles->Clear(); |
148b2bba | 726 | |
7b7c1533 | 727 | TIter next(trackSegments) ; |
7acf6008 | 728 | AliPHOSTrackSegment * ts ; |
6ad0bfa0 | 729 | Int_t index = 0 ; |
09fc14a0 | 730 | AliPHOSRecParticle * rp ; |
7acf6008 | 731 | while ( (ts = (AliPHOSTrackSegment *)next()) ) { |
fad3e5b9 | 732 | |
7b7c1533 | 733 | new( (*recParticles)[index] ) AliPHOSRecParticle() ; |
734 | rp = (AliPHOSRecParticle *)recParticles->At(index) ; | |
f0a4c9e9 | 735 | rp->SetTrackSegment(index) ; |
9688c1dd | 736 | rp->SetIndexInList(index) ; |
148b2bba | 737 | |
7acf6008 | 738 | AliPHOSEmcRecPoint * emc = 0 ; |
739 | if(ts->GetEmcIndex()>=0) | |
7b7c1533 | 740 | emc = (AliPHOSEmcRecPoint *) emcRecPoints->At(ts->GetEmcIndex()) ; |
fad3e5b9 | 741 | |
7acf6008 | 742 | AliPHOSRecPoint * cpv = 0 ; |
743 | if(ts->GetCpvIndex()>=0) | |
7b7c1533 | 744 | cpv = (AliPHOSRecPoint *) cpvRecPoints->At(ts->GetCpvIndex()) ; |
fad3e5b9 | 745 | |
148b2bba | 746 | // Now set type (reconstructed) of the particle |
747 | ||
748 | // Choose the cluster energy range | |
9fa5f1d0 | 749 | |
fbf811ec | 750 | if (!emc) { |
f1611b7c | 751 | Fatal("MakeRecParticles", "-> emc(%d) = %d", ts->GetEmcIndex(), emc ) ; |
fbf811ec | 752 | } |
50739f15 | 753 | |
bc0c084c | 754 | Float_t e = emc->GetEnergy() ; |
755 | ||
6f969528 | 756 | Float_t lambda[2] ; |
757 | emc->GetElipsAxis(lambda) ; | |
50739f15 | 758 | |
759 | if((lambda[0]>0.01) && (lambda[1]>0.01)){ | |
760 | // Looking PCA. Define and calculate the data (X), | |
bc0c084c | 761 | // introduce in the function X2P that gives the components (P). |
762 | ||
50739f15 | 763 | Float_t Spher = 0. ; |
764 | Float_t Emaxdtotal = 0. ; | |
765 | ||
bc0c084c | 766 | if((lambda[0]+lambda[1])!=0) |
767 | Spher=fabs(lambda[0]-lambda[1])/(lambda[0]+lambda[1]); | |
50739f15 | 768 | |
769 | Emaxdtotal=emc->GetMaximalEnergy()/emc->GetEnergy(); | |
770 | ||
771 | fX[0] = lambda[0] ; | |
772 | fX[1] = lambda[1] ; | |
773 | fX[2] = emc->GetDispersion() ; | |
774 | fX[3] = Spher ; | |
775 | fX[4] = emc->GetMultiplicity() ; | |
776 | fX[5] = Emaxdtotal ; | |
777 | fX[6] = emc->GetCoreEnergy() ; | |
778 | ||
779 | fPrincipal->X2P(fX,fP); | |
1f0e7ccd | 780 | if(fPi0Analysis) |
781 | fPrincipalPi0->X2P(fX,fPPi0); | |
782 | ||
50739f15 | 783 | } |
784 | else{ | |
785 | fP[0]=-100.0; //We do not accept clusters with | |
786 | fP[1]=-100.0; //one cell as a photon-like | |
1f0e7ccd | 787 | if(fPi0Analysis){ |
788 | fPPi0[0]=-100.0; | |
789 | fPPi0[1]=-100.0; | |
790 | } | |
50739f15 | 791 | } |
792 | ||
6f969528 | 793 | Float_t time =emc->GetTime() ; |
9fa5f1d0 | 794 | |
bc0c084c | 795 | // Loop of Efficiency-Purity (the 3 points of purity or efficiency |
796 | // are taken into account to set the particle identification) | |
50739f15 | 797 | for(Int_t eff_pur = 0; eff_pur < 3 ; eff_pur++){ |
798 | ||
bc0c084c | 799 | // Looking at the CPV detector. If RCPV greater than CpvEmcDistance, |
800 | // 1st,2nd or 3rd bit (depending on the efficiency-purity point ) | |
801 | // is set to 1 | |
802 | if(GetCPVBit(emc, cpv, eff_pur,e) == 1 ) | |
50739f15 | 803 | rp->SetPIDBit(eff_pur) ; |
f0a4c9e9 | 804 | |
50739f15 | 805 | // Looking the TOF. If TOF smaller than gate, 4th, 5th or 6th |
806 | // bit (depending on the efficiency-purity point )is set to 1 | |
1f0e7ccd | 807 | if(time< (*fParameters)(2,eff_pur)) |
50739f15 | 808 | rp->SetPIDBit(eff_pur+3) ; |
50739f15 | 809 | |
810 | //If we are inside the ellipse, 7th, 8th or 9th | |
811 | // bit (depending on the efficiency-purity point )is set to 1 | |
bc0c084c | 812 | if(GetPrincipalBit(fP,eff_pur,e) == 1) |
50739f15 | 813 | rp->SetPIDBit(eff_pur+6) ; |
1f0e7ccd | 814 | |
815 | //Pi0 analysis | |
816 | //If we are inside the ellipse, 10th, 11th or 12th | |
817 | // bit (depending on the efficiency-purity point )is set to 1 | |
818 | if(fPi0Analysis){ | |
819 | if(GetPrincipalPi0Bit(fPPi0,eff_pur,e) == 1) | |
820 | rp->SetPIDBit(eff_pur+9) ; | |
821 | } | |
f0a4c9e9 | 822 | } |
1f0e7ccd | 823 | |
824 | ||
9fa5f1d0 | 825 | //Set momentum, energy and other parameters |
50739f15 | 826 | Float_t encal = GetCalibratedEnergy(e); |
9fa5f1d0 | 827 | TVector3 dir = GetMomentumDirection(emc,cpv) ; |
828 | dir.SetMag(encal) ; | |
829 | rp->SetMomentum(dir.X(),dir.Y(),dir.Z(),encal) ; | |
830 | rp->SetCalcMass(0); | |
e0ed2e49 | 831 | rp->Name(); //If photon sets the particle pdg name to gamma |
e747b8da | 832 | rp->SetProductionVertex(0,0,0,0); |
833 | rp->SetFirstMother(-1); | |
834 | rp->SetLastMother(-1); | |
835 | rp->SetFirstDaughter(-1); | |
836 | rp->SetLastDaughter(-1); | |
837 | rp->SetPolarisation(0,0,0); | |
6ad0bfa0 | 838 | index++ ; |
839 | } | |
7acf6008 | 840 | |
6ad0bfa0 | 841 | } |
842 | ||
09fc14a0 | 843 | //____________________________________________________________________________ |
1f0e7ccd | 844 | void AliPHOSPIDv1::Print() |
09fc14a0 | 845 | { |
b2a60966 | 846 | // Print the parameters used for the particle type identification |
bc0c084c | 847 | |
21cd0c07 | 848 | TString message ; |
849 | message = "\n=============== AliPHOSPID1 ================\n" ; | |
850 | message += "Making PID\n"; | |
851 | message += " Pricipal analysis file from 0.5 to 100 %s\n" ; | |
852 | message += " Name of parameters file %s\n" ; | |
1f0e7ccd | 853 | message += " Matrix of Parameters: 14x4\n" ; |
854 | message += " Energy Calibration 1x3 [3 parametres to calibrate energy: A + B* E + C * E^2]\n" ; | |
bc0c084c | 855 | message += " RCPV 2x3 rows x and z, columns function cut parameters\n" ; |
856 | message += " TOF 1x3 [High Eff-Low Pur,Medium Eff-Pur, Low Eff-High Pur]\n" ; | |
21cd0c07 | 857 | message += " PCA 5x4 [5 ellipse parametres and 4 parametres to calculate them: A/Sqrt(E) + B* E + C * E^2 + D]\n" ; |
1f0e7ccd | 858 | message += " Pi0 PCA 5x3 [5 ellipse parametres and 3 parametres to calculate them: A + B* E + C * E^2]\n" ; |
21cd0c07 | 859 | Info("Print", message.Data(), fFileName.Data(), fFileNamePar.Data() ) ; |
50739f15 | 860 | fParameters->Print() ; |
09fc14a0 | 861 | } |
862 | ||
7acf6008 | 863 | //____________________________________________________________________________ |
7b7c1533 | 864 | void AliPHOSPIDv1::WriteRecParticles(Int_t event) |
09fc14a0 | 865 | { |
7b7c1533 | 866 | |
867 | AliPHOSGetter *gime = AliPHOSGetter::GetInstance() ; | |
a496c46c | 868 | |
fbf811ec | 869 | TClonesArray * recParticles = gime->RecParticles() ; |
bf8f1fbd | 870 | recParticles->Expand(recParticles->GetEntriesFast() ) ; |
fbf811ec | 871 | TTree * treeR ; |
872 | ||
873 | if(fToSplit){ | |
874 | if(!fSplitFile) | |
875 | return ; | |
876 | fSplitFile->cd() ; | |
877 | char name[10] ; | |
878 | sprintf(name,"%s%d", "TreeR",event) ; | |
879 | treeR = dynamic_cast<TTree*>(fSplitFile->Get(name)); | |
880 | } | |
881 | else{ | |
882 | treeR = gAlice->TreeR(); | |
883 | } | |
884 | ||
885 | if(!treeR){ | |
886 | gAlice->MakeTree("R", fSplitFile); | |
887 | treeR = gAlice->TreeR() ; | |
888 | } | |
7acf6008 | 889 | |
890 | //First rp | |
891 | Int_t bufferSize = 32000 ; | |
8d0f3f77 | 892 | TBranch * rpBranch = treeR->Branch("PHOSRP",&recParticles,bufferSize); |
fbf811ec | 893 | rpBranch->SetTitle(BranchName()); |
8d0f3f77 | 894 | |
9688c1dd | 895 | |
7acf6008 | 896 | //second, pid |
897 | Int_t splitlevel = 0 ; | |
898 | AliPHOSPIDv1 * pid = this ; | |
8d0f3f77 | 899 | TBranch * pidBranch = treeR->Branch("AliPHOSPID","AliPHOSPIDv1",&pid,bufferSize,splitlevel); |
fbf811ec | 900 | pidBranch->SetTitle(BranchName()); |
7acf6008 | 901 | |
761e34c0 | 902 | rpBranch->Fill() ; |
a496c46c | 903 | pidBranch->Fill() ; |
9688c1dd | 904 | |
fbf811ec | 905 | treeR->AutoSave() ; //Write(0,kOverwrite) ; |
906 | if(gAlice->TreeR()!=treeR){ | |
907 | treeR->Delete(); | |
908 | } | |
7acf6008 | 909 | } |
69183710 | 910 | |
7acf6008 | 911 | //____________________________________________________________________________ |
9688c1dd | 912 | TVector3 AliPHOSPIDv1::GetMomentumDirection(AliPHOSEmcRecPoint * emc, AliPHOSRecPoint * cpv)const |
7acf6008 | 913 | { |
914 | // Calculates the momentum direction: | |
915 | // 1. if only a EMC RecPoint, direction is given by IP and this RecPoint | |
9688c1dd | 916 | // 2. if a EMC RecPoint and CPV RecPoint, direction is given by the line through the 2 recpoints |
917 | // However because of the poor position resolution of PPSD the direction is always taken as if we were | |
7acf6008 | 918 | // in case 1. |
919 | ||
920 | TVector3 dir(0,0,0) ; | |
921 | ||
922 | TVector3 emcglobalpos ; | |
923 | TMatrix dummy ; | |
924 | ||
925 | emc->GetGlobalPosition(emcglobalpos, dummy) ; | |
148b2bba | 926 | |
7acf6008 | 927 | dir = emcglobalpos ; |
928 | dir.SetZ( -dir.Z() ) ; // why ? | |
7acf6008 | 929 | |
930 | //account correction to the position of IP | |
931 | Float_t xo,yo,zo ; //Coordinates of the origin | |
932 | gAlice->Generator()->GetOrigin(xo,yo,zo) ; | |
933 | TVector3 origin(xo,yo,zo); | |
934 | dir = dir - origin ; | |
1f0e7ccd | 935 | dir.SetMag(1.) ; |
7acf6008 | 936 | return dir ; |
937 | } | |
938 | //____________________________________________________________________________ | |
a4e98857 | 939 | void AliPHOSPIDv1::PrintRecParticles(Option_t * option) |
940 | { | |
dd5c4038 | 941 | // Print table of reconstructed particles |
942 | ||
7b7c1533 | 943 | AliPHOSGetter *gime = AliPHOSGetter::GetInstance() ; |
bf8f1fbd | 944 | |
a496c46c | 945 | TClonesArray * recParticles = gime->RecParticles(BranchName()) ; |
21cd0c07 | 946 | |
947 | TString message ; | |
3bf72d32 | 948 | message = "\nevent " ; |
949 | message += gAlice->GetEvNumber() ; | |
950 | message += " found " ; | |
951 | message += recParticles->GetEntriesFast(); | |
952 | message += " RecParticles\n" ; | |
953 | ||
7acf6008 | 954 | if(strstr(option,"all")) { // printing found TS |
3bf72d32 | 955 | message += "\n PARTICLE Index \n" ; |
7acf6008 | 956 | |
957 | Int_t index ; | |
7b7c1533 | 958 | for (index = 0 ; index < recParticles->GetEntries() ; index++) { |
21cd0c07 | 959 | AliPHOSRecParticle * rp = (AliPHOSRecParticle * ) recParticles->At(index) ; |
3bf72d32 | 960 | message += "\n" ; |
961 | message += rp->Name().Data() ; | |
962 | message += " " ; | |
963 | message += rp->GetIndexInList() ; | |
964 | message += " " ; | |
965 | message += rp->GetType() ; | |
7acf6008 | 966 | } |
3bf72d32 | 967 | } |
968 | Info("Print", message.Data() ) ; | |
69183710 | 969 | } |
970 | ||
7acf6008 | 971 | |
972 |