CASTOR replaced by CRT
[u/mrichter/AliRoot.git] / PHOS / AliPHOSPIDv1.cxx
CommitLineData
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:
26// -Bit 0 to 2: bit set if RCPV > fCpvEmcDistance (each bit corresponds
27// to a different efficiency-purity point of the photon identification)
28// -Bit 3 to 5: bit set if TOF < fTimeGate (each bit corresponds
29// to a different efficiency-purity point of the photon identification)
30// -Bit 6 to 9: bit set if Principal Components are
31// inside an ellipse defined by fX_center, fY_center, fA, fB, fAngle
32// (each bit corresponds to a different efficiency-purity point of the
33// photon identification)
9fa5f1d0 34// A calibrated energy is calculated. The energy of the reconstructed
35// cluster is corrected with the formula A + B * E + C * E^2, whose parameters
36// where obtained thourgh the study of the reconstructed energy
37// distribution of monoenergetic photons.
38//
a4e98857 39//
7acf6008 40//
a4e98857 41// use case:
f0a4c9e9 42// root [0] AliPHOSPIDv1 * p = new AliPHOSPIDv1("galice1.root","v1")
a4e98857 43// Warning in <TDatabasePDG::TDatabasePDG>: object already instantiated
148b2bba 44// // reading headers from file galice1.root and create RecParticles with title v1
45 // TrackSegments and RecPoints with title "v1" are used
7acf6008 46// // set file name for the branch RecParticles
f0a4c9e9 47// root [1] p->ExecuteTask("deb all time")
7acf6008 48// // available options
49// // "deb" - prints # of reconstructed particles
50// // "deb all" - prints # and list of RecParticles
51// // "time" - prints benchmarking results
52//
f0a4c9e9 53// root [2] AliPHOSPIDv1 * p2 = new AliPHOSPIDv1("galice1.root","v1","v0")
148b2bba 54// Warning in <TDatabasePDG::TDatabasePDG>: object already instantiated
55// // reading headers from file galice1.root and create RecParticles with title v1
56 // RecPoints and TrackSegments with title "v0" are used
f0a4c9e9 57// root [3] p2->ExecuteTask()
58//
59// There are two possible principal files available to do the analysis.
9fa5f1d0 60// One for energy ranges from 0.5 to 5 GeV, and another
61// one from 5 to 100 GeV. This files are automatically called in function
62// of the cluster energy.
f0a4c9e9 63
7acf6008 64//*-- Author: Yves Schutz (SUBATECH) & Gines Martinez (SUBATECH) &
148b2bba 65// Gustavo Conesa April 2002
6ad0bfa0 66
67// --- ROOT system ---
7acf6008 68#include "TROOT.h"
69#include "TTree.h"
70#include "TFile.h"
71#include "TF2.h"
72#include "TFormula.h"
73#include "TCanvas.h"
74#include "TFolder.h"
75#include "TSystem.h"
76#include "TBenchmark.h"
148b2bba 77#include "TMatrixD.h"
78#include "TPrincipal.h"
79#include "TSystem.h"
80
6ad0bfa0 81// --- Standard library ---
82
de9ec31b 83#include <iostream.h>
148b2bba 84#include <fstream.h>
7acf6008 85#include <iomanip.h>
6ad0bfa0 86
87// --- AliRoot header files ---
88
7acf6008 89#include "AliRun.h"
90#include "AliGenerator.h"
91#include "AliPHOS.h"
26d4b141 92#include "AliPHOSPIDv1.h"
7acf6008 93#include "AliPHOSClusterizerv1.h"
6ad0bfa0 94#include "AliPHOSTrackSegment.h"
7acf6008 95#include "AliPHOSTrackSegmentMakerv1.h"
6ad0bfa0 96#include "AliPHOSRecParticle.h"
7b7c1533 97#include "AliPHOSGeometry.h"
98#include "AliPHOSGetter.h"
6ad0bfa0 99
26d4b141 100ClassImp( AliPHOSPIDv1)
6ad0bfa0 101
6ad0bfa0 102//____________________________________________________________________________
1cb7c1ee 103AliPHOSPIDv1::AliPHOSPIDv1():AliPHOSPID()
104{
a4e98857 105 // default ctor
148b2bba 106
8d0f3f77 107 InitParameters() ;
7acf6008 108}
109
110//____________________________________________________________________________
148b2bba 111AliPHOSPIDv1::AliPHOSPIDv1(const char * headerFile,const char * name, const char * from) : AliPHOSPID(headerFile, name)
e0ed2e49 112
113
7acf6008 114{
a4e98857 115 //ctor with the indication on where to look for the track segments
7b7c1533 116
8d0f3f77 117 InitParameters() ;
118
148b2bba 119 if ( from == 0 )
120 fFrom = name ;
121 else
122 fFrom = from ;
8d0f3f77 123
2bd5457f 124 Init() ;
7acf6008 125
126}
7b7c1533 127
7acf6008 128//____________________________________________________________________________
129AliPHOSPIDv1::~AliPHOSPIDv1()
130{
79bb1b62 131 // dtor
132 // gime=0 if PID created by default ctor (to get just the parameters)
133
9fa5f1d0 134
a496c46c 135 delete [] fX ; // Principal input
148b2bba 136 delete [] fP ; // Principal components
137 delete fParameters ; // Matrix of Parameters
9fa5f1d0 138 delete fParameters5 ; // Matrix of Parameters
139 delete fParameters100 ; // Matrix of Parameters
140
8d0f3f77 141
142 AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ;
9fa5f1d0 143
144 if(gime){
145 // remove the task from the folder list
146 gime->RemoveTask("P",GetName()) ;
147 TString name(GetName()) ;
148 name.ReplaceAll("pid", "clu") ;
149 gime->RemoveTask("C",name) ;
150
151 // remove the data from the folder list
152 name = GetName() ;
153 name.Remove(name.Index(":")) ;
154 gime->RemoveObjects("RE", name) ; // EMCARecPoints
155 gime->RemoveObjects("RC", name) ; // CPVRecPoints
156 gime->RemoveObjects("T", name) ; // TrackSegments
157 gime->RemoveObjects("P", name) ; // RecParticles
158
159 // Delete gAlice
160 gime->CloseFile() ;
161 fSplitFile = 0 ;
79bb1b62 162 }
7acf6008 163}
2bd5457f 164
148b2bba 165//____________________________________________________________________________
a496c46c 166const TString AliPHOSPIDv1::BranchName() const
167{
168 TString branchName(GetName() ) ;
169 branchName.Remove(branchName.Index(Version())-1) ;
170 return branchName ;
171}
172
173//____________________________________________________________________________
148b2bba 174void AliPHOSPIDv1::Init()
175{
176 // Make all memory allocations that are not possible in default constructor
177 // Add the PID task to the list of PHOS tasks
a496c46c 178
148b2bba 179 if ( strcmp(GetTitle(), "") == 0 )
180 SetTitle("galice.root") ;
8d0f3f77 181
148b2bba 182 AliPHOSGetter * gime = AliPHOSGetter::GetInstance(GetTitle(), fFrom.Data()) ;
183
a496c46c 184 gime->SetRecParticlesTitle(BranchName()) ;
148b2bba 185 if ( gime == 0 ) {
186 cerr << "ERROR: AliPHOSPIDv1::Init -> Could not obtain the Getter object !" << endl ;
187 return ;
188 }
a496c46c 189
148b2bba 190 gime->PostPID(this) ;
191 // create a folder on the white board //YSAlice/WhiteBoard/RecParticles/PHOS/recparticlesName
a496c46c 192 gime->PostRecParticles(BranchName()) ;
148b2bba 193
194}
8d0f3f77 195
196//____________________________________________________________________________
197void AliPHOSPIDv1::InitParameters()
198{
199 fFrom = "" ;
200 fHeaderFileName = GetTitle() ;
201 TString name(GetName()) ;
202 if (name.IsNull())
203 name = "Default" ;
204 fTrackSegmentsTitle = name ;
205 fRecPointsTitle = name ;
206 fRecParticlesTitle = name ;
207 name.Append(":") ;
208 name.Append(Version()) ;
209 SetName(name) ;
210 fRecParticlesInRun = 0 ;
8d0f3f77 211 fNEvent = 0 ;
212 fClusterizer = 0 ;
213 fTSMaker = 0 ;
214 fRecParticlesInRun = 0 ;
9fa5f1d0 215 SetParameters() ; // fill the parameters matrix from parameters file
8d0f3f77 216}
217
1cb7c1ee 218//____________________________________________________________________________
9fa5f1d0 219Double_t AliPHOSPIDv1::GetCpvtoEmcDistanceCut(const Float_t Cluster_En, const TString Eff_Pur)
148b2bba 220{
221 // Get CpvtoEmcDistanceCut parameter depending on the cluster energy and
222 // Purity-Efficiency point (possible options "HIGH EFFICIENCY"
223 // "MEDIUM EFFICIENCY" "LOW EFFICIENCY" and 3 more options changing
224 // EFFICIENCY by PURITY)
148b2bba 225
9fa5f1d0 226 Int_t eff_pur = GetEffPurOption(Eff_Pur);
f0a4c9e9 227
9fa5f1d0 228 GetAnalysisParameters(Cluster_En) ;
229 if((fClusterrcpv!= -1)&&(eff_pur != -1))
230 return (*fParameters)(fClusterrcpv,eff_pur) ;
231 else
232 return 0.0;
148b2bba 233}
234//____________________________________________________________________________
235
9fa5f1d0 236Double_t AliPHOSPIDv1::GetTimeGate(const Float_t Cluster_En, const TString Eff_Pur)
148b2bba 237{
238 // Get TimeGate parameter depending on the cluster energy and
239 // Purity-Efficiency point (possible options "HIGH EFFICIENCY"
240 // "MEDIUM EFFICIENCY" "LOW EFFICIENCY" and 3 more options changing
241 // EFFICIENCY by PURITY)
9fa5f1d0 242
f0a4c9e9 243 Int_t eff_pur = GetEffPurOption(Eff_Pur);
9fa5f1d0 244 GetAnalysisParameters(Cluster_En) ;
245
246 if((fCluster!= -1)&&(eff_pur != -1))
247 return (*fParameters)(fCluster+3+fMatrixExtraRow,eff_pur) ;
248 else
249 return 0.0;
f0a4c9e9 250
148b2bba 251}
252//_____________________________________________________________________________
7acf6008 253Float_t AliPHOSPIDv1::GetDistance(AliPHOSEmcRecPoint * emc,AliPHOSRecPoint * cpv, Option_t * Axis)const
69183710 254{
255 // Calculates the distance between the EMC RecPoint and the PPSD RecPoint
148b2bba 256
7b7c1533 257 const AliPHOSGeometry * geom = AliPHOSGetter::GetInstance()->PHOSGeometry() ;
69183710 258 TVector3 vecEmc ;
7acf6008 259 TVector3 vecCpv ;
148b2bba 260 if(cpv){
261 emc->GetLocalPosition(vecEmc) ;
262 cpv->GetLocalPosition(vecCpv) ;
263 if(emc->GetPHOSMod() == cpv->GetPHOSMod()){
264 // Correct to difference in CPV and EMC position due to different distance to center.
265 // we assume, that particle moves from center
266 Float_t dCPV = geom->GetIPtoOuterCoverDistance();
267 Float_t dEMC = geom->GetIPtoCrystalSurface() ;
268 dEMC = dEMC / dCPV ;
269 vecCpv = dEMC * vecCpv - vecEmc ;
270 if (Axis == "X") return vecCpv.X();
271 if (Axis == "Y") return vecCpv.Y();
272 if (Axis == "Z") return vecCpv.Z();
273 if (Axis == "R") return vecCpv.Mag();
7acf6008 274 }
148b2bba 275
276 return 100000000 ;
277 }
7acf6008 278 return 100000000 ;
69183710 279}
280
69183710 281//____________________________________________________________________________
9fa5f1d0 282Double_t AliPHOSPIDv1::CalibratedEnergy(Float_t e){
283 //It calibrates Energy depending on the recpoint energy.
284// The energy of the reconstructed
285// cluster is corrected with the formula A + B* E + C* E^2, whose parameters
286// where obtained through the study of the reconstructed energy
287// distribution of monoenergetic photons.
288 Double_t enerec;
289 enerec = fACalParameter + fBCalParameter * e+ fCCalParameter * e * e;
290 return enerec ;
291
292}
293//____________________________________________________________________________
294Int_t AliPHOSPIDv1::GetPrincipalSign(Double_t* P, Int_t cluster, Int_t eff_pur)const
148b2bba 295{
296 //This method gives if the PCA of the particle are inside a defined ellipse
148b2bba 297 // Get the parameters that define the ellipse stored in the
298 // fParameters matrix.
299 Double_t X_center = (*fParameters)(cluster+6,eff_pur) ;
300 Double_t Y_center = (*fParameters)(cluster+9,eff_pur) ;
301 Double_t A = (*fParameters)(cluster+12,eff_pur) ;
302 Double_t B = (*fParameters)(cluster+15,eff_pur) ;
303 Double_t Angle = (*fParameters)(cluster+18,eff_pur) ;
304
305 Int_t prinsign;
306 Double_t Dx = 0. ;
307 Double_t Delta = 0. ;
308 Double_t Y = 0. ;
309 Double_t Y_1 = 0. ;
310 Double_t Y_2 = 0. ;
311 Double_t Pi = TMath::Pi() ;
312 Double_t Cos_Theta = TMath::Cos(Pi*Angle/180.) ;
313 Double_t Sin_Theta = TMath::Sin(Pi*Angle/180.) ;
314
315 Dx = P[0] - X_center ;
9fa5f1d0 316 Delta = 4.*A*A*B*B* (A*A*Cos_Theta*Cos_Theta
148b2bba 317 + B*B*Sin_Theta*Sin_Theta - Dx*Dx) ;
318 if (Delta < 0.)
319 {prinsign=0;}
320
321 else if (Delta == 0.)
322 {
323 Y = Cos_Theta*Sin_Theta*(A*A - B*B)*Dx /
324 (A*A*Cos_Theta*Cos_Theta + B*B*Sin_Theta*Sin_Theta) ;
325 Y += Y_center ;
326 if(P[1]==Y )
327 {prinsign=1;}
328 else
329 {prinsign=0;}
330 }
331 else
332 {
333 Y_1 = (Cos_Theta*Sin_Theta*(A*A - B*B) *Dx +
334 TMath::Sqrt(Delta)/2.)/(A*A*Cos_Theta*Cos_Theta +
335 B*B*Sin_Theta*Sin_Theta) ;
336 Y_2 = (Cos_Theta*Sin_Theta*(A*A - B*B) *Dx -
337 TMath::Sqrt(Delta)/2.)/(A*A*Cos_Theta*Cos_Theta
338 + B*B*Sin_Theta*Sin_Theta) ;
339 Y_1 += Y_center ;
340 Y_2 += Y_center ;
341 if ((P[1]<=Y_1) && (P[1]>=Y_2))
342 {prinsign=1;}
343 else
344 {prinsign=0;}
345 }
346 return prinsign;
347}
348
349//____________________________________________________________________________
e0ed2e49 350void AliPHOSPIDv1::SetEllipseParameters(Float_t Cluster_En, TString Eff_Pur, Float_t x, Float_t y,Float_t a, Float_t b,Float_t angle)
148b2bba 351{
352
353 // Set all ellipse parameters depending on the cluster energy and
354 // Purity-Efficiency point (possible options "HIGH EFFICIENCY"
355 // "MEDIUM EFFICIENCY" "LOW EFFICIENCY" and 3 more options changing
356 // EFFICIENCY by PURITY)
e0ed2e49 357
f0a4c9e9 358 Int_t eff_pur = GetEffPurOption(Eff_Pur);
9fa5f1d0 359 GetAnalysisParameters(Cluster_En) ;
360 if((fCluster!= -1)&&(eff_pur != -1)){
361 (*fParameters)(fCluster+6 +fMatrixExtraRow,eff_pur) = x ;
362 (*fParameters)(fCluster+9 +fMatrixExtraRow,eff_pur) = y ;
363 (*fParameters)(fCluster+12+fMatrixExtraRow,eff_pur) = a ;
364 (*fParameters)(fCluster+15+fMatrixExtraRow,eff_pur) = b ;
365 (*fParameters)(fCluster+18+fMatrixExtraRow,eff_pur) = angle ;
148b2bba 366 }
f0a4c9e9 367
148b2bba 368}
369//__________________________________________________________________________
370void AliPHOSPIDv1::SetEllipseXCenter(Float_t Cluster_En, TString Eff_Pur, Float_t x)
371{
372 // Set the ellipse parameter x_center depending on the custer energy and
373 // Purity-Efficiency point (possible options "HIGH EFFICIENCY"
374 // "MEDIUM EFFICIENCY" "LOW EFFICIENCY" and 3 more options changing
375 // EFFICIENCY by PURITY)
f0a4c9e9 376 Int_t eff_pur = GetEffPurOption(Eff_Pur);
9fa5f1d0 377 GetAnalysisParameters(Cluster_En) ;
378 if((fCluster!= -1)&&(eff_pur != -1))
379 (*fParameters)(fCluster+6+fMatrixExtraRow,eff_pur) = x ;
148b2bba 380}
381//_________________________________________________________________________
382void AliPHOSPIDv1::SetEllipseYCenter(Float_t Cluster_En, TString Eff_Pur, Float_t y)
383{
384
385 // Set the ellipse parameter y_center depending on the cluster energy and
386 // Purity-Efficiency point (possible options "HIGH EFFICIENCY"
387 // "MEDIUM EFFICIENCY" "LOW EFFICIENCY" and 3 more options changing
388 // EFFICIENCY by PURITY)
9fa5f1d0 389
f0a4c9e9 390 Int_t eff_pur = GetEffPurOption(Eff_Pur);
9fa5f1d0 391 GetAnalysisParameters(Cluster_En) ;
392 if((fCluster!= -1)&&(eff_pur != -1))
393 (*fParameters)(fCluster+9+fMatrixExtraRow,eff_pur) = y ;
148b2bba 394}
395//_________________________________________________________________________
396void AliPHOSPIDv1::SetEllipseAParameter(Float_t Cluster_En, TString Eff_Pur, Float_t a)
397{
398 // Set the ellipse parameter a depending on the cluster energy and
399 // Purity-Efficiency point (possible options "HIGH EFFICIENCY"
400 // "MEDIUM EFFICIENCY" "LOW EFFICIENCY" and 3 more options changing
401 // EFFICIENCY by PURITY)
f0a4c9e9 402
f0a4c9e9 403 Int_t eff_pur = GetEffPurOption(Eff_Pur);
9fa5f1d0 404 GetAnalysisParameters(Cluster_En) ;
405 if((fCluster!= -1)&&(eff_pur != -1))
406 (*fParameters)(fCluster+12+fMatrixExtraRow,eff_pur) = a ;
148b2bba 407}
408//________________________________________________________________________
409void AliPHOSPIDv1::SetEllipseBParameter(Float_t Cluster_En, TString Eff_Pur, Float_t b)
410{
411 // Set the ellipse parameter b depending on the cluster energy and
412 // Purity-Efficiency point (possible options "HIGH EFFICIENCY"
413 // "MEDIUM EFFICIENCY" "LOW EFFICIENCY" and 3 more options changing
414 // EFFICIENCY by PURITY)
148b2bba 415
f0a4c9e9 416 Int_t eff_pur = GetEffPurOption(Eff_Pur);
9fa5f1d0 417 GetAnalysisParameters(Cluster_En) ;
418 if((fCluster!= -1)&&(eff_pur != -1))
419 (*fParameters)(fCluster+15+fMatrixExtraRow,eff_pur) = b ;
148b2bba 420}
421//________________________________________________________________________
422void AliPHOSPIDv1::SetEllipseAngle(Float_t Cluster_En, TString Eff_Pur, Float_t angle)
423{
424
425 // Set the ellipse parameter angle depending on the cluster energy and
426 // Purity-Efficiency point (possible options "HIGH EFFICIENCY"
427 // "MEDIUM EFFICIENCY" "LOW EFFICIENCY" and 3 more options changing
428 // EFFICIENCY by PURITY)
f0a4c9e9 429
f0a4c9e9 430 Int_t eff_pur = GetEffPurOption(Eff_Pur);
9fa5f1d0 431 GetAnalysisParameters(Cluster_En) ;
432 if((fCluster!= -1)&&(eff_pur != -1))
433 (*fParameters)(fCluster+18+fMatrixExtraRow,eff_pur) = angle ;
148b2bba 434}
435//_____________________________________________________________________________
436void AliPHOSPIDv1::SetCpvtoEmcDistanceCut(Float_t Cluster_En, TString Eff_Pur, Float_t cut)
437{
438
439 // Set the parameter Cpvto EmcDistanceCut depending on the cluster energy and
440 // Purity-Efficiency point (possible options "HIGH EFFICIENCY"
441 // "MEDIUM EFFICIENCY" "LOW EFFICIENCY" and 3 more options changing
442 // EFFICIENCY by PURITY)
443
f0a4c9e9 444
9fa5f1d0 445 Int_t eff_pur = GetEffPurOption(Eff_Pur);
446 GetAnalysisParameters(Cluster_En) ;
447 if((fClusterrcpv!= -1)&&(eff_pur != -1))
448 (*fParameters)(fClusterrcpv,eff_pur) = cut ;
f0a4c9e9 449}
450//_____________________________________________________________________________
451void AliPHOSPIDv1::SetTimeGate(Float_t Cluster_En, TString Eff_Pur, Float_t gate)
452{
a496c46c 453
f0a4c9e9 454 // Set the parameter TimeGate depending on the cluster energy and
455 // Purity-Efficiency point (possible options "HIGH EFFICIENCY"
456 // "MEDIUM EFFICIENCY" "LOW EFFICIENCY" and 3 more options changing
457 // EFFICIENCY by PURITY)
458
f0a4c9e9 459 Int_t eff_pur = GetEffPurOption(Eff_Pur);
9fa5f1d0 460 GetAnalysisParameters(Cluster_En) ;
461 if((fCluster!= -1)&&(eff_pur != -1))
462 (*fParameters)(fCluster+3+fMatrixExtraRow,eff_pur) = gate ;
f0a4c9e9 463}
a496c46c 464//_____________________________________________________________________________
9fa5f1d0 465void AliPHOSPIDv1::SetParameters()
466 //TString OptFileName)
a496c46c 467{
468 // PCA : To do the Principal Components Analysis it is necessary
469 // the Principal file, which is opened here
470 fX = new double[7]; // Data for the PCA
f0a4c9e9 471 fP = new double[7]; // Eigenvalues of the PCA
e0ed2e49 472
f0a4c9e9 473
9fa5f1d0 474 // Set the principal and parameters files to be used
475 fFileName5 = "$ALICE_ROOT/PHOS/PCA8pa15_0.5-5.root" ;
476 fFileNamePar5 = gSystem->ExpandPathName("$ALICE_ROOT/PHOS/Parameters_0.5_5.dat");
477 fFileName100 = "$ALICE_ROOT/PHOS/PCA8pa15_0.5-100.root" ;
478 fFileNamePar100 = gSystem->ExpandPathName("$ALICE_ROOT/PHOS/Parameters_0.5_100.dat");
479
480 //SetPrincipalFileOptions();
481 //fOptFileName);
482 TFile f5( fFileName5.Data(), "read" ) ;
483 fPrincipal5 = dynamic_cast<TPrincipal*> (f5.Get("principal")) ;
484 f5.Close() ;
485 TFile f100( fFileName100.Data(), "read" ) ;
486 fPrincipal100 = dynamic_cast<TPrincipal*> (f100.Get("principal")) ;
487 f100.Close() ;
488 TFile f( fFileName100.Data(), "read" ) ;
a496c46c 489 fPrincipal = dynamic_cast<TPrincipal*> (f.Get("principal")) ;
490 f.Close() ;
9fa5f1d0 491 // Initialization of the Parameters matrix. In the File ParametersXX.dat
492 // are all the parameters. These are introduced in a matrix of 21x3 or 22x3
493 // elements (depending on the principal file 21 rows for 0.5-5 GeV and 22
494 // rows for 5-100).
a496c46c 495 // All the parameters defined in this file are, in order of row (there are
9fa5f1d0 496 // 3 rows per parameter): CpvtoEmcDistanceCut(if the principal file is 5-100
497 // GeV then 4 rows), TimeGate and the ellipse parameters, X_center, Y_center,
f0a4c9e9 498 // a, b, angle. Each row of a given parameter depends on the cluster energy range
499 // (wich depends on the chosen principal file)
9fa5f1d0 500 // Each column designs the parameters for a point in the Efficiency-Purity
f0a4c9e9 501 // of the photon identification P1(96%,63%), P2(87%,0.88%) and P3(68%,94%)
502 // for the principal file from 0.5-5 GeV and for the other one P1(95%,79%),
503 // P2(89%,90%) and P3(72%,96%)
504
a496c46c 505
9fa5f1d0 506 fParameters5 = new TMatrixD(21,3) ;
507 fParameters100 = new TMatrixD(22,3) ;
508 fParameters = new TMatrixD(22,3) ;
509
510 ifstream paramFile5(fFileNamePar5, ios::in) ;
a496c46c 511
512 Int_t i,j ;
513
9fa5f1d0 514 for(i = 0; i< 21; i++){
a496c46c 515 for(j = 0; j< 3; j++){
9fa5f1d0 516 paramFile5 >> (*fParameters5)(i,j) ;
517 }
518 }
519 paramFile5.close();
520
521 ifstream paramFile100(fFileNamePar100, ios::in) ;
522
523 Int_t l,k ;
524
525 for(l = 0; l< 22; l++){
526 for(k = 0; k< 3; k++){
527 paramFile100 >> (*fParameters100)(l,k) ;
528 }
529 }
530 paramFile100.close();
531
532 ifstream paramFile(fFileNamePar100, ios::in) ;
533 Int_t h,n;
534 for(h = 0; h< 22; h++){
535 for(n = 0; n< 3; n++){
536 paramFile >> (*fParameters)(h,n) ;
a496c46c 537 }
538 }
9fa5f1d0 539 paramFile.close();
540
541 fCluster = -1;
542 fClusterrcpv = -1;
543 fMatrixExtraRow = 0;
544
545 //Calibration parameters Encal = C * E^2 + B * E + A (E is the energy from cluster)
546 fACalParameter = 0.0241 ;
547 fBCalParameter = 1.0504 ;
548 fCCalParameter = 0.000249 ;
549
f0a4c9e9 550 // fParameters->Print();
a496c46c 551}
148b2bba 552//_____________________________________________________________________________
9fa5f1d0 553void AliPHOSPIDv1::GetAnalysisParameters(Float_t Cluster_En)
554{
555 if(Cluster_En <= 5.){
556 fPrincipal = fPrincipal5;
557 fParameters = fParameters5;
558 fMatrixExtraRow = 0;
559 GetClusterOption(Cluster_En,kFALSE) ;
560 }
561 else{
562 fPrincipal = fPrincipal100;
563 fParameters = fParameters100;
564 fMatrixExtraRow = 1;
565 GetClusterOption(Cluster_En,kTRUE) ;
566 }
567}
568
569//_____________________________________________________________________________
570void AliPHOSPIDv1::GetClusterOption(const Float_t Cluster_En, const Bool_t range)
148b2bba 571{
572
f0a4c9e9 573 // Gives the cluster energy range.
9fa5f1d0 574 // range = kFALSE Default analisys range from 0.5 to 5 GeV
575 // range = kTRUE analysis range from 0.5 to 100 GeV
576
f0a4c9e9 577
9fa5f1d0 578 //Int_t cluster = -1 ;
f0a4c9e9 579
9fa5f1d0 580 if((range == kFALSE)){
581 if((Cluster_En > 0.3)&&(Cluster_En <= 1.0)){
582 fCluster = 0 ;
583 fClusterrcpv = 0 ;
584 }
585 if((Cluster_En > 1.0)&&(Cluster_En <= 2.0)){
586 fCluster = 1 ;
587 fClusterrcpv = 1 ;
588 }
589 if( Cluster_En > 2.0){
590 fCluster = 2 ;
591 fClusterrcpv = 2 ;
592 }
f0a4c9e9 593 }
9fa5f1d0 594 else if(range == kTRUE){
595 if((Cluster_En > 0.5 )&&(Cluster_En <= 20.0)) fCluster = 0 ;
596 if((Cluster_En > 20.0)&&(Cluster_En <= 50.0)) fCluster = 1 ;
597 if( Cluster_En > 50.0) fCluster = 2 ;
598 if((Cluster_En > 5.0 )&&(Cluster_En <= 10.0)) fClusterrcpv = 0 ;
599 if((Cluster_En > 10.0)&&(Cluster_En <= 20.0)) fClusterrcpv = 1 ;
600 if((Cluster_En > 20.0)&&(Cluster_En <= 30.0)) fClusterrcpv = 2 ;
601 if( Cluster_En > 30.0) fClusterrcpv = 3 ;
f0a4c9e9 602 }
603 else {
9fa5f1d0 604 fCluster = -1 ;
605 fClusterrcpv = -1;
f0a4c9e9 606 cout<<"Invalid Energy option"<<endl;
607 }
608
9fa5f1d0 609 //return cluster;
f0a4c9e9 610}
611//____________________________________________________________________________
612Int_t AliPHOSPIDv1::GetEffPurOption(const TString Eff_Pur) const
613{
614
615 // Looks for the Purity-Efficiency point (possible options "HIGH EFFICIENCY"
148b2bba 616 // "MEDIUM EFFICIENCY" "LOW EFFICIENCY" and 3 more options changing
617 // EFFICIENCY by PURITY)
618
148b2bba 619 Int_t eff_pur = -1 ;
620
f0a4c9e9 621 if(Eff_Pur.Contains("HIGH EFFICIENCY") ||Eff_Pur.Contains("LOW PURITY") )
622 eff_pur = 0 ;
623 else if(Eff_Pur.Contains("MEDIUM EFFICIENCY") ||Eff_Pur.Contains("MEDIUM PURITY") )
624 eff_pur = 1 ;
625 else if(Eff_Pur.Contains("LOW EFFICIENCY")||Eff_Pur.Contains("HIGH PURITY") )
626 eff_pur = 2 ;
148b2bba 627 else{
f0a4c9e9 628 eff_pur = -1;
629 cout<<"Invalid Efficiency-Purity option"<<endl;
630 cout<<"Possible options: HIGH EFFICIENCY = LOW PURITY"<<endl;
631 cout<<" MEDIUM EFFICIENCY = MEDIUM PURITY"<<endl;
632 cout<<" LOW EFFICIENCY = HIGH PURITY"<<endl;
148b2bba 633 }
f0a4c9e9 634
635 return eff_pur;
636}
148b2bba 637//____________________________________________________________________________
638
7acf6008 639void AliPHOSPIDv1::Exec(Option_t * option)
6ad0bfa0 640{
f035f6ce 641 //Steering method
9688c1dd 642
bf8f1fbd 643 if( strcmp(GetName(), "")== 0 )
7acf6008 644 Init() ;
bf8f1fbd 645
646 if(strstr(option,"tim"))
7acf6008 647 gBenchmark->Start("PHOSPID");
bf8f1fbd 648
649 if(strstr(option,"print")) {
7b7c1533 650 Print("") ;
651 return ;
bf8f1fbd 652 }
9688c1dd 653
148b2bba 654 //cout << gDirectory->GetName() << endl ;
655
bf8f1fbd 656 gAlice->GetEvent(0) ;
148b2bba 657
7b7c1533 658 //check, if the branch with name of this" already exits?
8d0f3f77 659 if (gAlice->TreeR()) {
660 TObjArray * lob = (TObjArray*)gAlice->TreeR()->GetListOfBranches() ;
661 TIter next(lob) ;
662 TBranch * branch = 0 ;
663 Bool_t phospidfound = kFALSE, pidfound = kFALSE ;
664
665 TString taskName(GetName()) ;
666 taskName.Remove(taskName.Index(Version())-1) ;
667
668 while ( (branch = (TBranch*)next()) && (!phospidfound || !pidfound) ) {
669 if ( (strcmp(branch->GetName(), "PHOSPID")==0) && (strcmp(branch->GetTitle(), taskName.Data())==0) )
670 phospidfound = kTRUE ;
671
672 else if ( (strcmp(branch->GetName(), "AliPHOSPID")==0) && (strcmp(branch->GetTitle(), taskName.Data())==0) )
673 pidfound = kTRUE ;
674 }
7b7c1533 675
8d0f3f77 676 if ( phospidfound || pidfound ) {
677 cerr << "WARNING: AliPHOSPIDv1::Exec -> RecParticles and/or PIDtMaker branch with name "
678 << taskName.Data() << " already exits" << endl ;
679 return ;
680 }
7b7c1533 681 }
9688c1dd 682
7b7c1533 683 Int_t nevents = (Int_t) gAlice->TreeE()->GetEntries() ;
684 Int_t ievent ;
148b2bba 685 AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ;
7b7c1533 686 for(ievent = 0; ievent < nevents; ievent++){
a496c46c 687 gime->Event(ievent,"R") ;
148b2bba 688
7acf6008 689 MakeRecParticles() ;
9688c1dd 690
7b7c1533 691 WriteRecParticles(ievent);
9688c1dd 692
7acf6008 693 if(strstr(option,"deb"))
694 PrintRecParticles(option) ;
94de8339 695
696 //increment the total number of rec particles per run
a496c46c 697 fRecParticlesInRun += gime->RecParticles(BranchName())->GetEntriesFast() ;
94de8339 698
7acf6008 699 }
9688c1dd 700
7acf6008 701 if(strstr(option,"tim")){
702 gBenchmark->Stop("PHOSPID");
703 cout << "AliPHOSPID:" << endl ;
704 cout << " took " << gBenchmark->GetCpuTime("PHOSPID") << " seconds for PID "
7b7c1533 705 << gBenchmark->GetCpuTime("PHOSPID")/nevents << " seconds per event " << endl ;
7acf6008 706 cout << endl ;
707 }
9688c1dd 708
7acf6008 709}
7b7c1533 710
711//____________________________________________________________________________
7acf6008 712void AliPHOSPIDv1::MakeRecParticles(){
713
b2a60966 714 // Makes a RecParticle out of a TrackSegment
148b2bba 715
7b7c1533 716 AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ;
148b2bba 717 TObjArray * emcRecPoints = gime->EmcRecPoints(fFrom) ;
718 TObjArray * cpvRecPoints = gime->CpvRecPoints(fFrom) ;
719 TClonesArray * trackSegments = gime->TrackSegments(fFrom) ;
720 if ( !emcRecPoints || !cpvRecPoints || !trackSegments ) {
721 cerr << "ERROR: AliPHOSPIDv1::MakeRecParticles -> RecPoints or TrackSegments with name "
722 << fFrom << " not found ! " << endl ;
723 abort() ;
724 }
a496c46c 725 TClonesArray * recParticles = gime->RecParticles(BranchName()) ;
01a599c9 726 recParticles->Clear();
148b2bba 727
728
7b7c1533 729 TIter next(trackSegments) ;
7acf6008 730 AliPHOSTrackSegment * ts ;
6ad0bfa0 731 Int_t index = 0 ;
09fc14a0 732 AliPHOSRecParticle * rp ;
7acf6008 733
7acf6008 734 while ( (ts = (AliPHOSTrackSegment *)next()) ) {
fad3e5b9 735
7b7c1533 736 new( (*recParticles)[index] ) AliPHOSRecParticle() ;
737 rp = (AliPHOSRecParticle *)recParticles->At(index) ;
f0a4c9e9 738 rp->SetTrackSegment(index) ;
9688c1dd 739 rp->SetIndexInList(index) ;
148b2bba 740
7acf6008 741 AliPHOSEmcRecPoint * emc = 0 ;
742 if(ts->GetEmcIndex()>=0)
7b7c1533 743 emc = (AliPHOSEmcRecPoint *) emcRecPoints->At(ts->GetEmcIndex()) ;
fad3e5b9 744
7acf6008 745 AliPHOSRecPoint * cpv = 0 ;
746 if(ts->GetCpvIndex()>=0)
7b7c1533 747 cpv = (AliPHOSRecPoint *) cpvRecPoints->At(ts->GetCpvIndex()) ;
fad3e5b9 748
148b2bba 749 // Now set type (reconstructed) of the particle
750
751 // Choose the cluster energy range
9fa5f1d0 752
753 Float_t e = emc->GetEnergy() ;
754
755
756 GetAnalysisParameters(e);
148b2bba 757
9fa5f1d0 758 if((fCluster== -1)||(fClusterrcpv == -1)) continue ;
759
760 // Ellipse and rcpv cut in function of the cluster energy
761
148b2bba 762 // Loop of Efficiency-Purity (the 3 points of purity or efficiency are taken
763 // into account to set the particle identification)
764 for(Int_t eff_pur = 0; eff_pur < 3 ; eff_pur++){
f0a4c9e9 765
f0a4c9e9 766 Float_t lambda[2] ;
f0a4c9e9 767 emc->GetElipsAxis(lambda) ;
9fa5f1d0 768 Float_t time =emc->GetTime() ;
f0a4c9e9 769
9fa5f1d0 770 if((lambda[0]>0.01) && (lambda[1]>0.01) && time > 0.){
771
772 // Looking at the CPV detector. If RCPV greater than CpvEmcDistance, 1st,
773 // 2nd or 3rd bit (depending on the efficiency-purity point )is set to 1 .
774
775 if(GetDistance(emc, cpv, "R") > (*fParameters)(fClusterrcpv,eff_pur) )
776 rp->SetPIDBit(eff_pur) ;
777
778 // Looking the TOF. If TOF smaller than gate, 4th, 5th or 6th
779 // bit (depending on the efficiency-purity point )is set to 1
780 if(time< (*fParameters)(fCluster+3+fMatrixExtraRow,eff_pur))
781 rp->SetPIDBit(eff_pur+3) ;
782
783 // Looking PCA. Define and calculate the data (X), introduce in the function
784 // X2P that gives the components (P).
785 Float_t Spher = 0. ;
786 Float_t Emaxdtotal = 0. ;
787
788 if((lambda[0]+lambda[1])!=0) Spher=fabs(lambda[0]-lambda[1])/(lambda[0]+lambda[1]);
789
790 Emaxdtotal=emc->GetMaximalEnergy()/emc->GetEnergy();
791
792 fX[0] = lambda[0] ;
793 fX[1] = lambda[1] ;
794 fX[2] = emc->GetDispersion() ;
795 fX[3] = Spher ;
796 fX[4] = emc->GetMultiplicity() ;
797 fX[5] = Emaxdtotal ;
798 fX[6] = emc->GetCoreEnergy() ;
799
800 fPrincipal->X2P(fX,fP);
801
802 //If we are inside the ellipse, 7th, 8th or 9th
803 // bit (depending on the efficiency-purity point )is set to 1
804 if(GetPrincipalSign(fP,fCluster+fMatrixExtraRow,eff_pur) == 1)
805 rp->SetPIDBit(eff_pur+6) ;
806
807 }
f0a4c9e9 808 }
148b2bba 809
9fa5f1d0 810 //Set momentum, energy and other parameters
811 Float_t encal = CalibratedEnergy(e);
812 TVector3 dir = GetMomentumDirection(emc,cpv) ;
813 dir.SetMag(encal) ;
814 rp->SetMomentum(dir.X(),dir.Y(),dir.Z(),encal) ;
815 rp->SetCalcMass(0);
e0ed2e49 816 rp->Name(); //If photon sets the particle pdg name to gamma
e747b8da 817 rp->SetProductionVertex(0,0,0,0);
818 rp->SetFirstMother(-1);
819 rp->SetLastMother(-1);
820 rp->SetFirstDaughter(-1);
821 rp->SetLastDaughter(-1);
822 rp->SetPolarisation(0,0,0);
6ad0bfa0 823 index++ ;
824 }
7acf6008 825
6ad0bfa0 826}
827
09fc14a0 828//____________________________________________________________________________
a496c46c 829void AliPHOSPIDv1:: Print()
09fc14a0 830{
b2a60966 831 // Print the parameters used for the particle type identification
f035f6ce 832 cout << "=============== AliPHOSPID1 ================" << endl ;
833 cout << "Making PID "<< endl ;
834 cout << " Headers file: " << fHeaderFileName.Data() << endl ;
835 cout << " RecPoints branch title: " << fRecPointsTitle.Data() << endl ;
7b7c1533 836 cout << " TrackSegments Branch title: " << fTrackSegmentsTitle.Data() << endl ;
837 cout << " RecParticles Branch title " << fRecParticlesTitle.Data() << endl;
9fa5f1d0 838
839 cout << " Pricipal analysis file from 0.5 to 5 " << fFileName5.Data() << endl;
840 cout << " Name of parameters file "<<fFileNamePar5.Data() << endl ;
841 cout << " Matrix of Parameters: "<<endl;
842 cout << " 3 Columns [High Eff-Low Pur,Medium Eff-Pur, Low Eff-High Pur]"<<endl;
843 cout << " 21 Rows, each 3 [ RCPV, TOF, X_Center, Y_Center, A, B, Angle ]"<<endl;
844 fParameters5->Print() ;
845
846 cout << " Pricipal analysis file from 5 to 100 " << fFileName100.Data() << endl;
847 cout << " Name of parameters file "<<fFileNamePar100.Data() << endl ;
e0ed2e49 848 cout << " Matrix of Parameters: "<<endl;
849 cout << " 3 Columns [High Eff-Low Pur,Medium Eff-Pur, Low Eff-High Pur]"<<endl;
9fa5f1d0 850 cout << " 22 Rows, [ 4 RCPV, 3 TOF, 3 X_Center, 3 Y_Center, 3 A, 3 B, 3 Angle ]"<<endl;
851 fParameters100->Print() ;
852
853 cout << " Energy Calibration Parameters A + B* E + C * E^2"<<endl;
854 cout << " E is the energy from the cluster "<<endl;
855 cout << " A = "<< fACalParameter << endl;
856 cout << " B = "<< fBCalParameter << endl;
857 cout << " C = "<< fCCalParameter << endl;
f035f6ce 858 cout << "============================================" << endl ;
09fc14a0 859}
860
861//____________________________________________________________________________
7b7c1533 862void AliPHOSPIDv1::WriteRecParticles(Int_t event)
09fc14a0 863{
7b7c1533 864
865 AliPHOSGetter *gime = AliPHOSGetter::GetInstance() ;
a496c46c 866
867 TClonesArray * recParticles = gime->RecParticles(BranchName()) ;
bf8f1fbd 868 recParticles->Expand(recParticles->GetEntriesFast() ) ;
8d0f3f77 869 TTree * treeR = gAlice->TreeR() ;
9688c1dd 870
8d0f3f77 871 if (!treeR)
872 gAlice->MakeTree("R", fSplitFile);
873 treeR = gAlice->TreeR() ;
7acf6008 874
875 //First rp
876 Int_t bufferSize = 32000 ;
8d0f3f77 877 TBranch * rpBranch = treeR->Branch("PHOSRP",&recParticles,bufferSize);
bf8f1fbd 878 rpBranch->SetTitle(fRecParticlesTitle);
8d0f3f77 879
9688c1dd 880
7acf6008 881 //second, pid
882 Int_t splitlevel = 0 ;
883 AliPHOSPIDv1 * pid = this ;
8d0f3f77 884 TBranch * pidBranch = treeR->Branch("AliPHOSPID","AliPHOSPIDv1",&pid,bufferSize,splitlevel);
9688c1dd 885 pidBranch->SetTitle(fRecParticlesTitle.Data());
7acf6008 886
761e34c0 887 rpBranch->Fill() ;
a496c46c 888 pidBranch->Fill() ;
9688c1dd 889
8d0f3f77 890 gAlice->TreeR()->AutoSave() ;// Write(0,kOverwrite) ;
7b7c1533 891
7acf6008 892}
69183710 893
7acf6008 894//____________________________________________________________________________
9688c1dd 895TVector3 AliPHOSPIDv1::GetMomentumDirection(AliPHOSEmcRecPoint * emc, AliPHOSRecPoint * cpv)const
7acf6008 896{
897 // Calculates the momentum direction:
898 // 1. if only a EMC RecPoint, direction is given by IP and this RecPoint
9688c1dd 899 // 2. if a EMC RecPoint and CPV RecPoint, direction is given by the line through the 2 recpoints
900 // However because of the poor position resolution of PPSD the direction is always taken as if we were
7acf6008 901 // in case 1.
902
903 TVector3 dir(0,0,0) ;
904
905 TVector3 emcglobalpos ;
906 TMatrix dummy ;
907
908 emc->GetGlobalPosition(emcglobalpos, dummy) ;
909
148b2bba 910
7acf6008 911 dir = emcglobalpos ;
912 dir.SetZ( -dir.Z() ) ; // why ?
913 dir.SetMag(1.) ;
914
915 //account correction to the position of IP
916 Float_t xo,yo,zo ; //Coordinates of the origin
917 gAlice->Generator()->GetOrigin(xo,yo,zo) ;
918 TVector3 origin(xo,yo,zo);
919 dir = dir - origin ;
920
921 return dir ;
922}
923//____________________________________________________________________________
a4e98857 924void AliPHOSPIDv1::PrintRecParticles(Option_t * option)
925{
dd5c4038 926 // Print table of reconstructed particles
927
7b7c1533 928 AliPHOSGetter *gime = AliPHOSGetter::GetInstance() ;
bf8f1fbd 929
a496c46c 930 TClonesArray * recParticles = gime->RecParticles(BranchName()) ;
9688c1dd 931
01a599c9 932 cout << "AliPHOSPIDv1: event "<<gAlice->GetEvNumber() << endl ;
7b7c1533 933 cout << " found " << recParticles->GetEntriesFast() << " RecParticles " << endl ;
9688c1dd 934
7acf6008 935 if(strstr(option,"all")) { // printing found TS
936
e0ed2e49 937 cout << " PARTICLE "
7acf6008 938 << " Index " << endl ;
7acf6008 939
940 Int_t index ;
7b7c1533 941 for (index = 0 ; index < recParticles->GetEntries() ; index++) {
148b2bba 942 AliPHOSRecParticle * rp = (AliPHOSRecParticle * ) recParticles->At(index) ;
e0ed2e49 943
944 cout << setw(10) << rp->Name() << " "
945 << setw(5) << rp->GetIndexInList() << " " <<endl;
946 cout << "Type "<< rp->GetType() << endl;
7acf6008 947 }
948 cout << "-------------------------------------------" << endl ;
949 }
950
69183710 951}
952
7acf6008 953
954