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correct a typo SetTraskSegment to SetTrackSegment
[u/mrichter/AliRoot.git] / PHOS / AliPHOSPIDv1.cxx
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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:
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)
a4e98857 34//
7acf6008 35//
a4e98857 36// use case:
f0a4c9e9 37// root [0] AliPHOSPIDv1 * p = new AliPHOSPIDv1("galice1.root","v1")
a4e98857 38// Warning in <TDatabasePDG::TDatabasePDG>: object already instantiated
148b2bba 39// // reading headers from file galice1.root and create RecParticles with title v1
40 // TrackSegments and RecPoints with title "v1" are used
7acf6008 41// // set file name for the branch RecParticles
f0a4c9e9 42// root [1] p->ExecuteTask("deb all time")
7acf6008 43// // available options
44// // "deb" - prints # of reconstructed particles
45// // "deb all" - prints # and list of RecParticles
46// // "time" - prints benchmarking results
47//
f0a4c9e9 48// root [2] AliPHOSPIDv1 * p2 = new AliPHOSPIDv1("galice1.root","v1","v0")
148b2bba 49// Warning in <TDatabasePDG::TDatabasePDG>: object already instantiated
50// // reading headers from file galice1.root and create RecParticles with title v1
51 // RecPoints and TrackSegments with title "v0" are used
f0a4c9e9 52// root [3] p2->ExecuteTask()
53//
54// There are two possible principal files available to do the analysis.
55// One for energy ranges from 0.5 to 5 GeV, the default one, and another
56// one from 0.5 to 100 GeV. To do the analysis with one of this files,
57// Use case
58// root [0] AliPHOSPIDv1 p("galice.root")
59// Warning in <TDatabasePDG::TDatabasePDG>: object already instantiated
60// root [1] p.SetParameters("Wide energy range") (0.5-100 GeV)
61// root [2] p.ExecuteTask("deb")
62// or
63// root [0] AliPHOSPIDv1 p("galice.root")
64// Warning in <TDatabasePDG::TDatabasePDG>: object already instantiated
65// root [1] p.SetParameters("Small energy range") (0.5-5 GeV)
66// or
67// p.SetParameters("Default") (0.5-5 GeV)
68// root [2] p.ExecuteTask("deb")
69
7acf6008 70//*-- Author: Yves Schutz (SUBATECH) & Gines Martinez (SUBATECH) &
148b2bba 71// Gustavo Conesa April 2002
6ad0bfa0 72
73// --- ROOT system ---
7acf6008 74#include "TROOT.h"
75#include "TTree.h"
76#include "TFile.h"
77#include "TF2.h"
78#include "TFormula.h"
79#include "TCanvas.h"
80#include "TFolder.h"
81#include "TSystem.h"
82#include "TBenchmark.h"
148b2bba 83#include "TMatrixD.h"
84#include "TPrincipal.h"
85#include "TSystem.h"
86
6ad0bfa0 87// --- Standard library ---
88
de9ec31b 89#include <iostream.h>
148b2bba 90#include <fstream.h>
7acf6008 91#include <iomanip.h>
6ad0bfa0 92
93// --- AliRoot header files ---
94
7acf6008 95#include "AliRun.h"
96#include "AliGenerator.h"
97#include "AliPHOS.h"
26d4b141 98#include "AliPHOSPIDv1.h"
7acf6008 99#include "AliPHOSClusterizerv1.h"
6ad0bfa0 100#include "AliPHOSTrackSegment.h"
7acf6008 101#include "AliPHOSTrackSegmentMakerv1.h"
6ad0bfa0 102#include "AliPHOSRecParticle.h"
7b7c1533 103#include "AliPHOSGeometry.h"
104#include "AliPHOSGetter.h"
6ad0bfa0 105
26d4b141 106ClassImp( AliPHOSPIDv1)
6ad0bfa0 107
1cb7c1ee 108//____________________________________________________________________________
109AliPHOSPIDv1::AliPHOSPIDv1():AliPHOSPID()
110{
a4e98857 111 // default ctor
148b2bba 112
a496c46c 113 fFileName = "" ;
f0a4c9e9 114 fFileNamePar = "" ;
115 fCluster = -1 ;
a496c46c 116 fFrom = "" ;
117 fHeaderFileName = "" ;
e0ed2e49 118 fOptFileName = "Default" ;
a496c46c 119 fTrackSegmentsTitle = "" ;
120 fRecPointsTitle = "" ;
121 fRecParticlesTitle = "" ;
122
123 fNEvent = 0 ;
124 fClusterizer = 0 ;
125 fTSMaker = 0 ;
2685bf00 126 fRecParticlesInRun = 0 ;
a496c46c 127 fX = 0 ;
128 fP = 0 ;
129 fParameters = 0 ;
130
7acf6008 131}
132
133//____________________________________________________________________________
148b2bba 134AliPHOSPIDv1::AliPHOSPIDv1(const char * headerFile,const char * name, const char * from) : AliPHOSPID(headerFile, name)
e0ed2e49 135
136
7acf6008 137{
a4e98857 138 //ctor with the indication on where to look for the track segments
7b7c1533 139
140 fHeaderFileName = GetTitle() ;
141 fTrackSegmentsTitle = GetName() ;
142 fRecPointsTitle = GetName() ;
148b2bba 143 fRecParticlesTitle = GetName() ;
7b7c1533 144 TString tempo(GetName()) ;
bf8f1fbd 145 tempo.Append(":") ;
7b7c1533 146 tempo.Append(Version()) ;
bf8f1fbd 147 SetName(tempo) ;
2b60655b 148 fRecParticlesInRun = 0 ;
148b2bba 149 if ( from == 0 )
150 fFrom = name ;
151 else
152 fFrom = from ;
e0ed2e49 153 fOptFileName = "Default" ;
2bd5457f 154 Init() ;
7acf6008 155
156}
7b7c1533 157
7acf6008 158//____________________________________________________________________________
159AliPHOSPIDv1::~AliPHOSPIDv1()
160{
a496c46c 161
162 delete [] fX ; // Principal input
148b2bba 163 delete [] fP ; // Principal components
164 delete fParameters ; // Matrix of Parameters
7acf6008 165}
2bd5457f 166
a496c46c 167//____________________________________________________________________________
168const TString AliPHOSPIDv1::BranchName() const
169{
170 TString branchName(GetName() ) ;
171 branchName.Remove(branchName.Index(Version())-1) ;
172 return branchName ;
173}
174
148b2bba 175//____________________________________________________________________________
176void AliPHOSPIDv1::Init()
177{
178 // Make all memory allocations that are not possible in default constructor
179 // Add the PID task to the list of PHOS tasks
a496c46c 180
148b2bba 181 if ( strcmp(GetTitle(), "") == 0 )
182 SetTitle("galice.root") ;
183
f0a4c9e9 184 SetParameters(fOptFileName) ; // fill the parameters matrix from parameters file
e0ed2e49 185
148b2bba 186 AliPHOSGetter * gime = AliPHOSGetter::GetInstance(GetTitle(), fFrom.Data()) ;
187
a496c46c 188 gime->SetRecParticlesTitle(BranchName()) ;
148b2bba 189 if ( gime == 0 ) {
190 cerr << "ERROR: AliPHOSPIDv1::Init -> Could not obtain the Getter object !" << endl ;
191 return ;
192 }
a496c46c 193
148b2bba 194 gime->PostPID(this) ;
195 // create a folder on the white board //YSAlice/WhiteBoard/RecParticles/PHOS/recparticlesName
a496c46c 196 gime->PostRecParticles(BranchName()) ;
148b2bba 197
198}
69183710 199//____________________________________________________________________________
148b2bba 200Double_t AliPHOSPIDv1::GetCpvtoEmcDistanceCut(const Float_t Cluster_En, const TString Eff_Pur)const
201{
202 // Get CpvtoEmcDistanceCut parameter depending on the cluster energy and
203 // Purity-Efficiency point (possible options "HIGH EFFICIENCY"
204 // "MEDIUM EFFICIENCY" "LOW EFFICIENCY" and 3 more options changing
205 // EFFICIENCY by PURITY)
206
f0a4c9e9 207 Int_t cluster = GetClusterOption(Cluster_En,kTRUE);
208 Int_t eff_pur = GetEffPurOption(Eff_Pur);
148b2bba 209
f0a4c9e9 210 if((cluster!= -1)||(eff_pur != -1))
148b2bba 211 return (*fParameters)(cluster,eff_pur) ;
f0a4c9e9 212
148b2bba 213}
214//____________________________________________________________________________
215
216Double_t AliPHOSPIDv1::GetTimeGate(const Float_t Cluster_En, const TString Eff_Pur) const
217{
218 // Get TimeGate parameter depending on the cluster energy and
219 // Purity-Efficiency point (possible options "HIGH EFFICIENCY"
220 // "MEDIUM EFFICIENCY" "LOW EFFICIENCY" and 3 more options changing
221 // EFFICIENCY by PURITY)
148b2bba 222
f0a4c9e9 223 Int_t cluster = GetClusterOption( Cluster_En,kFALSE);
224 Int_t eff_pur = GetEffPurOption(Eff_Pur);
225
226 if((cluster!= -1)||(eff_pur != -1))
227 return (*fParameters)(cluster+3+fCluster,eff_pur) ;
148b2bba 228
148b2bba 229}
230//_____________________________________________________________________________
7acf6008 231Float_t AliPHOSPIDv1::GetDistance(AliPHOSEmcRecPoint * emc,AliPHOSRecPoint * cpv, Option_t * Axis)const
69183710 232{
233 // Calculates the distance between the EMC RecPoint and the PPSD RecPoint
148b2bba 234
7b7c1533 235 const AliPHOSGeometry * geom = AliPHOSGetter::GetInstance()->PHOSGeometry() ;
69183710 236 TVector3 vecEmc ;
7acf6008 237 TVector3 vecCpv ;
148b2bba 238 if(cpv){
239 emc->GetLocalPosition(vecEmc) ;
240 cpv->GetLocalPosition(vecCpv) ;
241 if(emc->GetPHOSMod() == cpv->GetPHOSMod()){
242 // Correct to difference in CPV and EMC position due to different distance to center.
243 // we assume, that particle moves from center
244 Float_t dCPV = geom->GetIPtoOuterCoverDistance();
245 Float_t dEMC = geom->GetIPtoCrystalSurface() ;
246 dEMC = dEMC / dCPV ;
247 vecCpv = dEMC * vecCpv - vecEmc ;
248 if (Axis == "X") return vecCpv.X();
249 if (Axis == "Y") return vecCpv.Y();
250 if (Axis == "Z") return vecCpv.Z();
251 if (Axis == "R") return vecCpv.Mag();
7acf6008 252 }
148b2bba 253
254 return 100000000 ;
255 }
7acf6008 256 return 100000000 ;
69183710 257}
258
6ad0bfa0 259//____________________________________________________________________________
148b2bba 260Int_t AliPHOSPIDv1::GetPrincipalSign(Double_t* P, Int_t cluster, Int_t eff_pur )const
261{
262 //This method gives if the PCA of the particle are inside a defined ellipse
263
264 // Get the parameters that define the ellipse stored in the
265 // fParameters matrix.
266 Double_t X_center = (*fParameters)(cluster+6,eff_pur) ;
267 Double_t Y_center = (*fParameters)(cluster+9,eff_pur) ;
268 Double_t A = (*fParameters)(cluster+12,eff_pur) ;
269 Double_t B = (*fParameters)(cluster+15,eff_pur) ;
270 Double_t Angle = (*fParameters)(cluster+18,eff_pur) ;
271
272 Int_t prinsign;
273 Double_t Dx = 0. ;
274 Double_t Delta = 0. ;
275 Double_t Y = 0. ;
276 Double_t Y_1 = 0. ;
277 Double_t Y_2 = 0. ;
278 Double_t Pi = TMath::Pi() ;
279 Double_t Cos_Theta = TMath::Cos(Pi*Angle/180.) ;
280 Double_t Sin_Theta = TMath::Sin(Pi*Angle/180.) ;
281
282 Dx = P[0] - X_center ;
283 Delta = 4.*A*A*A*B* (A*A*Cos_Theta*Cos_Theta
284 + B*B*Sin_Theta*Sin_Theta - Dx*Dx) ;
285 if (Delta < 0.)
286 {prinsign=0;}
287
288 else if (Delta == 0.)
289 {
290 Y = Cos_Theta*Sin_Theta*(A*A - B*B)*Dx /
291 (A*A*Cos_Theta*Cos_Theta + B*B*Sin_Theta*Sin_Theta) ;
292 Y += Y_center ;
293 if(P[1]==Y )
294 {prinsign=1;}
295 else
296 {prinsign=0;}
297 }
298 else
299 {
300 Y_1 = (Cos_Theta*Sin_Theta*(A*A - B*B) *Dx +
301 TMath::Sqrt(Delta)/2.)/(A*A*Cos_Theta*Cos_Theta +
302 B*B*Sin_Theta*Sin_Theta) ;
303 Y_2 = (Cos_Theta*Sin_Theta*(A*A - B*B) *Dx -
304 TMath::Sqrt(Delta)/2.)/(A*A*Cos_Theta*Cos_Theta
305 + B*B*Sin_Theta*Sin_Theta) ;
306 Y_1 += Y_center ;
307 Y_2 += Y_center ;
308 if ((P[1]<=Y_1) && (P[1]>=Y_2))
309 {prinsign=1;}
310 else
311 {prinsign=0;}
312 }
313 return prinsign;
314}
315
316//____________________________________________________________________________
e0ed2e49 317void AliPHOSPIDv1::SetPrincipalFileOptions(TString OptFileName) {
f0a4c9e9 318 fOptFileName = OptFileName ;
e0ed2e49 319
f0a4c9e9 320 if(fOptFileName.Contains("Small energy range")||fOptFileName.Contains("Default")){
e0ed2e49 321 fFileName = "$ALICE_ROOT/PHOS/PCA8pa15_0.5-5.root" ;
322 fFileNamePar = gSystem->ExpandPathName("$ALICE_ROOT/PHOS/Parameters_0.5_5.dat");
f0a4c9e9 323 fCluster = 0 ;
e0ed2e49 324 }
325
f0a4c9e9 326 else if(fOptFileName.Contains("Wide energy range")){
e0ed2e49 327 fFileName = "$ALICE_ROOT/PHOS/PCA8pa15_0.5-100.root" ;
328 fFileNamePar = gSystem->ExpandPathName("$ALICE_ROOT/PHOS/Parameters_0.5_100.dat");
f0a4c9e9 329 fCluster = 3 ;
330 }
331 else{
332 cout<<" Invalid energy range option "<<endl;
333 cout<<" Possible options : Default (0.5-5 GeV) "<<endl;
334 cout<<" Small energy range (0.5-5 GeV) "<<endl;
335 cout<<" Wide energy range (0.5-100 GeV) "<<endl;
e0ed2e49 336 }
337}
338
339//____________________________________________________________________________
340void 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 341{
342
343 // Set all ellipse parameters depending on the cluster energy and
344 // Purity-Efficiency point (possible options "HIGH EFFICIENCY"
345 // "MEDIUM EFFICIENCY" "LOW EFFICIENCY" and 3 more options changing
346 // EFFICIENCY by PURITY)
e0ed2e49 347
f0a4c9e9 348 Int_t cluster = GetClusterOption( Cluster_En, kFALSE);
349 Int_t eff_pur = GetEffPurOption(Eff_Pur);
e0ed2e49 350
f0a4c9e9 351 if((cluster!= -1)||(eff_pur != -1)){
352 (*fParameters)(cluster+6 +fCluster,eff_pur) = x ;
353 (*fParameters)(cluster+9 +fCluster,eff_pur) = y ;
354 (*fParameters)(cluster+12+fCluster,eff_pur) = a ;
355 (*fParameters)(cluster+15+fCluster,eff_pur) = b ;
356 (*fParameters)(cluster+18+fCluster,eff_pur) = angle ;
148b2bba 357 }
f0a4c9e9 358
148b2bba 359}
360//__________________________________________________________________________
361void AliPHOSPIDv1::SetEllipseXCenter(Float_t Cluster_En, TString Eff_Pur, Float_t x)
362{
363 // Set the ellipse parameter x_center depending on the custer energy and
364 // Purity-Efficiency point (possible options "HIGH EFFICIENCY"
365 // "MEDIUM EFFICIENCY" "LOW EFFICIENCY" and 3 more options changing
366 // EFFICIENCY by PURITY)
148b2bba 367
f0a4c9e9 368 Int_t cluster = GetClusterOption( Cluster_En, kFALSE);
369 Int_t eff_pur = GetEffPurOption(Eff_Pur);
148b2bba 370
f0a4c9e9 371 if((cluster!= -1)||(eff_pur != -1))
372 (*fParameters)(cluster+6+fCluster,eff_pur) = x ;
148b2bba 373
148b2bba 374}
375//_________________________________________________________________________
376void AliPHOSPIDv1::SetEllipseYCenter(Float_t Cluster_En, TString Eff_Pur, Float_t y)
377{
378
379 // Set the ellipse parameter y_center depending on the cluster energy and
380 // Purity-Efficiency point (possible options "HIGH EFFICIENCY"
381 // "MEDIUM EFFICIENCY" "LOW EFFICIENCY" and 3 more options changing
382 // EFFICIENCY by PURITY)
383
f0a4c9e9 384 Int_t cluster = GetClusterOption( Cluster_En, kFALSE);
385 Int_t eff_pur = GetEffPurOption(Eff_Pur);
148b2bba 386
f0a4c9e9 387 if((cluster!= -1)||(eff_pur != -1))
388 (*fParameters)(cluster+9+fCluster,eff_pur) = y ;
148b2bba 389
148b2bba 390}
391//_________________________________________________________________________
392void AliPHOSPIDv1::SetEllipseAParameter(Float_t Cluster_En, TString Eff_Pur, Float_t a)
393{
394 // Set the ellipse parameter a depending on the cluster energy and
395 // Purity-Efficiency point (possible options "HIGH EFFICIENCY"
396 // "MEDIUM EFFICIENCY" "LOW EFFICIENCY" and 3 more options changing
397 // EFFICIENCY by PURITY)
f0a4c9e9 398
399 Int_t cluster = GetClusterOption(Cluster_En,kFALSE);
400 Int_t eff_pur = GetEffPurOption(Eff_Pur);
148b2bba 401
f0a4c9e9 402 if((cluster!= -1)||(eff_pur != -1))
403 (*fParameters)(cluster+12+fCluster,eff_pur) = a ;
148b2bba 404
148b2bba 405}
406//________________________________________________________________________
407void AliPHOSPIDv1::SetEllipseBParameter(Float_t Cluster_En, TString Eff_Pur, Float_t b)
408{
409 // Set the ellipse parameter b depending on the cluster energy and
410 // Purity-Efficiency point (possible options "HIGH EFFICIENCY"
411 // "MEDIUM EFFICIENCY" "LOW EFFICIENCY" and 3 more options changing
412 // EFFICIENCY by PURITY)
148b2bba 413
f0a4c9e9 414 Int_t cluster = GetClusterOption(Cluster_En,kFALSE);
415 Int_t eff_pur = GetEffPurOption(Eff_Pur);
416
417 if((cluster!= -1)||(eff_pur != -1))
418 (*fParameters)(cluster+15+fCluster,eff_pur) = b ;
e0ed2e49 419
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
430 Int_t cluster = GetClusterOption(Cluster_En,kFALSE) ;
431 Int_t eff_pur = GetEffPurOption(Eff_Pur);
432
433 if((cluster!= -1)||(eff_pur != -1))
434 (*fParameters)(cluster+18+fCluster,eff_pur) = angle ;
148b2bba 435
148b2bba 436}
437//_____________________________________________________________________________
438void AliPHOSPIDv1::SetCpvtoEmcDistanceCut(Float_t Cluster_En, TString Eff_Pur, Float_t cut)
439{
440
441 // Set the parameter Cpvto EmcDistanceCut depending on the cluster energy and
442 // Purity-Efficiency point (possible options "HIGH EFFICIENCY"
443 // "MEDIUM EFFICIENCY" "LOW EFFICIENCY" and 3 more options changing
444 // EFFICIENCY by PURITY)
445
f0a4c9e9 446 Int_t cluster = GetClusterOption(Cluster_En,kTRUE);
447 Int_t eff_pur = GetEffPurOption(Eff_Pur);
148b2bba 448
f0a4c9e9 449 if((cluster!= -1)||(eff_pur != -1))
148b2bba 450 (*fParameters)(cluster,eff_pur) = cut ;
f0a4c9e9 451
452}
453//_____________________________________________________________________________
454void AliPHOSPIDv1::SetTimeGate(Float_t Cluster_En, TString Eff_Pur, Float_t gate)
455{
a496c46c 456
f0a4c9e9 457 // Set the parameter TimeGate depending on the cluster energy and
458 // Purity-Efficiency point (possible options "HIGH EFFICIENCY"
459 // "MEDIUM EFFICIENCY" "LOW EFFICIENCY" and 3 more options changing
460 // EFFICIENCY by PURITY)
461
462 Int_t cluster = GetClusterOption(Cluster_En,kFALSE);
463 Int_t eff_pur = GetEffPurOption(Eff_Pur);
464
465 if((cluster!= -1)||(eff_pur != -1))
466 (*fParameters)(cluster+3+fCluster,eff_pur) = gate ;
467
468}
a496c46c 469//_____________________________________________________________________________
f0a4c9e9 470void AliPHOSPIDv1::SetParameters(TString OptFileName)
a496c46c 471{
472 // PCA : To do the Principal Components Analysis it is necessary
473 // the Principal file, which is opened here
474 fX = new double[7]; // Data for the PCA
f0a4c9e9 475 fP = new double[7]; // Eigenvalues of the PCA
e0ed2e49 476
f0a4c9e9 477 fOptFileName = OptFileName ;
478
e0ed2e49 479 SetPrincipalFileOptions(fOptFileName);
a496c46c 480 TFile f( fFileName.Data(), "read" ) ;
f0a4c9e9 481 //cout<<fFileName.Data()<<endl;
a496c46c 482 fPrincipal = dynamic_cast<TPrincipal*> (f.Get("principal")) ;
483 f.Close() ;
484
485 // Initialization of the Parameters matrix. In the File Parameters.dat
f0a4c9e9 486 // are all the parameters. These are introduced in a matrix of 21x3 or 24x3
487 // elements (depending on the principal file 21 rows for 0.5-5 GeV and 24
488 // rows for 0.5-100).
a496c46c 489 // All the parameters defined in this file are, in order of row (there are
f0a4c9e9 490 // 3 rows per parameter): CpvtoEmcDistanceCut(if the principal file is 0.5-100
491 // GeV than 6 rows), TimeGate (and the ellipse parameters), X_center, Y_center,
492 // a, b, angle. Each row of a given parameter depends on the cluster energy range
493 // (wich depends on the chosen principal file)
a496c46c 494 // Each column designes the parameters for a point in the Efficiency-Purity
f0a4c9e9 495 // of the photon identification P1(96%,63%), P2(87%,0.88%) and P3(68%,94%)
496 // for the principal file from 0.5-5 GeV and for the other one P1(95%,79%),
497 // P2(89%,90%) and P3(72%,96%)
498
499 Int_t rows = 21;
500 if(fCluster == 0)rows = 21 ;
501 if(fCluster == 3)rows = 24 ;
a496c46c 502
f0a4c9e9 503 fParameters = new TMatrixD(rows,3) ;
504 //cout<<fFileNamePar<<endl;
a496c46c 505 ifstream paramFile(fFileNamePar, ios::in) ;
506
507 Int_t i,j ;
508
f0a4c9e9 509 for(i = 0; i< rows; i++){
a496c46c 510 for(j = 0; j< 3; j++){
511 paramFile >> (*fParameters)(i,j) ;
512 }
513 }
f0a4c9e9 514 paramFile.close();
515 // fParameters->Print();
a496c46c 516}
148b2bba 517//_____________________________________________________________________________
f0a4c9e9 518Int_t AliPHOSPIDv1::GetClusterOption(const Float_t Cluster_En, const Bool_t rcpv) const
148b2bba 519{
520
f0a4c9e9 521 // Gives the cluster energy range.
522
523 Int_t cluster = -1 ;
524
525 if((fCluster == 0)){
526 if((Cluster_En > 0.3)&&(Cluster_En <= 1.0)) cluster = 0 ;
527 if((Cluster_En > 1.0)&&(Cluster_En <= 2.0)) cluster = 1 ;
528 if( Cluster_En > 2.0) cluster = 2 ;
529 }
530 else if(fCluster == 3 &&(rcpv == kFALSE)){
531 if((Cluster_En > 0.5 )&&(Cluster_En <= 20.0)) cluster = 0 ;
532 if((Cluster_En > 20.0)&&(Cluster_En <= 50.0)) cluster = 1 ;
533 if( Cluster_En > 50.0) cluster = 2 ;
534 }
535 else if(fCluster == 3 &&(rcpv == kTRUE)){
536 if((Cluster_En > 0.5 )&&(Cluster_En <= 2.0) ) cluster = 0 ;
537 if((Cluster_En > 2.0 )&&(Cluster_En <= 5.0) ) cluster = 1 ;
538 if((Cluster_En > 5.0 )&&(Cluster_En <= 10.0)) cluster = 2 ;
539 if((Cluster_En > 10.0)&&(Cluster_En <= 20.0)) cluster = 3 ;
540 if((Cluster_En > 20.0)&&(Cluster_En <= 30.0)) cluster = 4 ;
541 if( Cluster_En > 30.0) cluster = 5 ;
542 }
543 else {
544 cluster = -1 ;
545 cout<<"Invalid Energy option"<<endl;
546 }
547
548 return cluster;
549}
550//____________________________________________________________________________
551Int_t AliPHOSPIDv1::GetEffPurOption(const TString Eff_Pur) const
552{
553
554 // Looks for the Purity-Efficiency point (possible options "HIGH EFFICIENCY"
148b2bba 555 // "MEDIUM EFFICIENCY" "LOW EFFICIENCY" and 3 more options changing
556 // EFFICIENCY by PURITY)
557
148b2bba 558 Int_t eff_pur = -1 ;
559
f0a4c9e9 560 if(Eff_Pur.Contains("HIGH EFFICIENCY") ||Eff_Pur.Contains("LOW PURITY") )
561 eff_pur = 0 ;
562 else if(Eff_Pur.Contains("MEDIUM EFFICIENCY") ||Eff_Pur.Contains("MEDIUM PURITY") )
563 eff_pur = 1 ;
564 else if(Eff_Pur.Contains("LOW EFFICIENCY")||Eff_Pur.Contains("HIGH PURITY") )
565 eff_pur = 2 ;
148b2bba 566 else{
f0a4c9e9 567 eff_pur = -1;
568 cout<<"Invalid Efficiency-Purity option"<<endl;
569 cout<<"Possible options: HIGH EFFICIENCY = LOW PURITY"<<endl;
570 cout<<" MEDIUM EFFICIENCY = MEDIUM PURITY"<<endl;
571 cout<<" LOW EFFICIENCY = HIGH PURITY"<<endl;
148b2bba 572 }
f0a4c9e9 573
574 return eff_pur;
575}
148b2bba 576//____________________________________________________________________________
577
7acf6008 578void AliPHOSPIDv1::Exec(Option_t * option)
6ad0bfa0 579{
f035f6ce 580 //Steering method
9688c1dd 581
bf8f1fbd 582 if( strcmp(GetName(), "")== 0 )
7acf6008 583 Init() ;
bf8f1fbd 584
585 if(strstr(option,"tim"))
7acf6008 586 gBenchmark->Start("PHOSPID");
bf8f1fbd 587
588 if(strstr(option,"print")) {
7b7c1533 589 Print("") ;
590 return ;
bf8f1fbd 591 }
9688c1dd 592
148b2bba 593 //cout << gDirectory->GetName() << endl ;
594
bf8f1fbd 595 gAlice->GetEvent(0) ;
148b2bba 596
7b7c1533 597 //check, if the branch with name of this" already exits?
598 TObjArray * lob = (TObjArray*)gAlice->TreeR()->GetListOfBranches() ;
599 TIter next(lob) ;
600 TBranch * branch = 0 ;
601 Bool_t phospidfound = kFALSE, pidfound = kFALSE ;
602
603 TString taskName(GetName()) ;
bf8f1fbd 604 taskName.Remove(taskName.Index(Version())-1) ;
9688c1dd 605
7b7c1533 606 while ( (branch = (TBranch*)next()) && (!phospidfound || !pidfound) ) {
607 if ( (strcmp(branch->GetName(), "PHOSPID")==0) && (strcmp(branch->GetTitle(), taskName.Data())==0) )
608 phospidfound = kTRUE ;
609
610 else if ( (strcmp(branch->GetName(), "AliPHOSPID")==0) && (strcmp(branch->GetTitle(), taskName.Data())==0) )
611 pidfound = kTRUE ;
612 }
9688c1dd 613
7b7c1533 614 if ( phospidfound || pidfound ) {
615 cerr << "WARNING: AliPHOSPIDv1::Exec -> RecParticles and/or PIDtMaker branch with name "
616 << taskName.Data() << " already exits" << endl ;
617 return ;
618 }
bf8f1fbd 619
7b7c1533 620 Int_t nevents = (Int_t) gAlice->TreeE()->GetEntries() ;
621 Int_t ievent ;
148b2bba 622 AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ;
7b7c1533 623 for(ievent = 0; ievent < nevents; ievent++){
a496c46c 624 gime->Event(ievent,"R") ;
148b2bba 625
7acf6008 626 MakeRecParticles() ;
9688c1dd 627
7b7c1533 628 WriteRecParticles(ievent);
9688c1dd 629
7acf6008 630 if(strstr(option,"deb"))
631 PrintRecParticles(option) ;
94de8339 632
633 //increment the total number of rec particles per run
a496c46c 634 fRecParticlesInRun += gime->RecParticles(BranchName())->GetEntriesFast() ;
94de8339 635
7acf6008 636 }
9688c1dd 637
7acf6008 638 if(strstr(option,"tim")){
639 gBenchmark->Stop("PHOSPID");
640 cout << "AliPHOSPID:" << endl ;
641 cout << " took " << gBenchmark->GetCpuTime("PHOSPID") << " seconds for PID "
7b7c1533 642 << gBenchmark->GetCpuTime("PHOSPID")/nevents << " seconds per event " << endl ;
7acf6008 643 cout << endl ;
644 }
9688c1dd 645
7b7c1533 646}
647
7acf6008 648//____________________________________________________________________________
649void AliPHOSPIDv1::MakeRecParticles(){
650
b2a60966 651 // Makes a RecParticle out of a TrackSegment
148b2bba 652
7b7c1533 653 AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ;
148b2bba 654 TObjArray * emcRecPoints = gime->EmcRecPoints(fFrom) ;
655 TObjArray * cpvRecPoints = gime->CpvRecPoints(fFrom) ;
656 TClonesArray * trackSegments = gime->TrackSegments(fFrom) ;
657 if ( !emcRecPoints || !cpvRecPoints || !trackSegments ) {
658 cerr << "ERROR: AliPHOSPIDv1::MakeRecParticles -> RecPoints or TrackSegments with name "
659 << fFrom << " not found ! " << endl ;
660 abort() ;
661 }
a496c46c 662 TClonesArray * recParticles = gime->RecParticles(BranchName()) ;
01a599c9 663 recParticles->Clear();
148b2bba 664
665
7b7c1533 666 TIter next(trackSegments) ;
7acf6008 667 AliPHOSTrackSegment * ts ;
6ad0bfa0 668 Int_t index = 0 ;
09fc14a0 669 AliPHOSRecParticle * rp ;
7acf6008 670
7acf6008 671 while ( (ts = (AliPHOSTrackSegment *)next()) ) {
fad3e5b9 672
7b7c1533 673 new( (*recParticles)[index] ) AliPHOSRecParticle() ;
674 rp = (AliPHOSRecParticle *)recParticles->At(index) ;
f0a4c9e9 675 rp->SetTrackSegment(index) ;
9688c1dd 676 rp->SetIndexInList(index) ;
148b2bba 677
7acf6008 678 AliPHOSEmcRecPoint * emc = 0 ;
679 if(ts->GetEmcIndex()>=0)
7b7c1533 680 emc = (AliPHOSEmcRecPoint *) emcRecPoints->At(ts->GetEmcIndex()) ;
fad3e5b9 681
7acf6008 682 AliPHOSRecPoint * cpv = 0 ;
683 if(ts->GetCpvIndex()>=0)
7b7c1533 684 cpv = (AliPHOSRecPoint *) cpvRecPoints->At(ts->GetCpvIndex()) ;
fad3e5b9 685
7acf6008 686 //set momentum and energy first
687 Float_t e = emc->GetEnergy() ;
9688c1dd 688 TVector3 dir = GetMomentumDirection(emc,cpv) ;
7acf6008 689 dir.SetMag(e) ;
690
691 rp->SetMomentum(dir.X(),dir.Y(),dir.Z(),e) ;
692 rp->SetCalcMass(0);
fad3e5b9 693
148b2bba 694 // Now set type (reconstructed) of the particle
695
696 // Choose the cluster energy range
f0a4c9e9 697 // Ellipse and rcpv cut in function of the cluster energy
698 Int_t clusterrcpv = GetClusterOption(e,kTRUE) ;
699 Int_t cluster = GetClusterOption(e,kFALSE) ;
700 if((cluster== -1)||(clusterrcpv == -1)) continue ;
148b2bba 701
702 // Loop of Efficiency-Purity (the 3 points of purity or efficiency are taken
703 // into account to set the particle identification)
704 for(Int_t eff_pur = 0; eff_pur < 3 ; eff_pur++){
f0a4c9e9 705
706 // Looking at the CPV detector. If RCPV greater than CpvEmcDistance, 1st,
707 // 2nd or 3rd bit (depending on the efficiency-purity point )is set to 1 .
708 if(GetDistance(emc, cpv, "R") > (*fParameters)(clusterrcpv,eff_pur) )
148b2bba 709 rp->SetPIDBit(eff_pur) ;
f0a4c9e9 710
711 // Looking the TOF. If TOF smaller than gate, 4th, 5th or 6th
712 // bit (depending on the efficiency-purity point )is set to 1
713 if(emc->GetTime()< (*fParameters)(cluster+3+fCluster,eff_pur))
148b2bba 714 rp->SetPIDBit(eff_pur+3) ;
715
f0a4c9e9 716 // Looking PCA. Define and calculate the data (X), introduce in the function
717 // X2P that gives the components (P).
718 Float_t Spher = 0. ;
719 Float_t Emaxdtotal = 0. ;
720 Float_t lambda[2] ;
721
722 emc->GetElipsAxis(lambda) ;
723 if((lambda[0]+lambda[1])!=0) Spher=fabs(lambda[0]-lambda[1])/(lambda[0]+lambda[1]);
724
725 Emaxdtotal=emc->GetMaximalEnergy()/emc->GetEnergy();
726
727 fX[0] = lambda[0] ;
728 fX[1] = lambda[1] ;
729 fX[2] = emc->GetDispersion() ;
730 fX[3] = Spher ;
731 fX[4] = emc->GetMultiplicity() ;
732 fX[5] = Emaxdtotal ;
733 fX[6] = emc->GetCoreEnergy() ;
734
735 fPrincipal->X2P(fX,fP);
736
737 //If we are inside the ellipse, 7th, 8th or 9th
738 // bit (depending on the efficiency-purity point )is set to 1
739 if(GetPrincipalSign(fP,cluster+fCluster,eff_pur) == 1)
740 rp->SetPIDBit(eff_pur+6) ;
741
742 }
148b2bba 743
e0ed2e49 744 rp->Name(); //If photon sets the particle pdg name to gamma
e747b8da 745 rp->SetProductionVertex(0,0,0,0);
746 rp->SetFirstMother(-1);
747 rp->SetLastMother(-1);
748 rp->SetFirstDaughter(-1);
749 rp->SetLastDaughter(-1);
750 rp->SetPolarisation(0,0,0);
6ad0bfa0 751 index++ ;
752 }
7acf6008 753
6ad0bfa0 754}
755
09fc14a0 756//____________________________________________________________________________
a496c46c 757void AliPHOSPIDv1:: Print()
09fc14a0 758{
b2a60966 759 // Print the parameters used for the particle type identification
f035f6ce 760 cout << "=============== AliPHOSPID1 ================" << endl ;
761 cout << "Making PID "<< endl ;
762 cout << " Headers file: " << fHeaderFileName.Data() << endl ;
763 cout << " RecPoints branch title: " << fRecPointsTitle.Data() << endl ;
7b7c1533 764 cout << " TrackSegments Branch title: " << fTrackSegmentsTitle.Data() << endl ;
765 cout << " RecParticles Branch title " << fRecParticlesTitle.Data() << endl;
f0a4c9e9 766 cout << " Pricipal analysis file " << fFileName.Data() << endl;
e0ed2e49 767 cout << " Matrix of Parameters: "<<endl;
f0a4c9e9 768 cout << " Name of parameters file "<<fFileNamePar.Data() << endl ;
e0ed2e49 769 cout << " 3 Columns [High Eff-Low Pur,Medium Eff-Pur, Low Eff-High Pur]"<<endl;
f0a4c9e9 770 if(fCluster == 0)
771 cout << " 21 Rows, each 3 [ RCPV, TOF, X_Center, Y_Center, A, B, Angle ]"<<endl;
772 if(fCluster == 3)
773 cout << " 24 Rows, [ 6 RCPV, 3 TOF, 3 X_Center, 3 Y_Center, 3 A, 3 B, 3 Angle ]"<<endl;
774
775 //cout<<fOptFileName<<endl;
776 SetParameters(fOptFileName) ;
a496c46c 777 fParameters->Print() ;
f035f6ce 778 cout << "============================================" << endl ;
09fc14a0 779}
780
7acf6008 781//____________________________________________________________________________
7b7c1533 782void AliPHOSPIDv1::WriteRecParticles(Int_t event)
09fc14a0 783{
7b7c1533 784
785 AliPHOSGetter *gime = AliPHOSGetter::GetInstance() ;
a496c46c 786
787 TClonesArray * recParticles = gime->RecParticles(BranchName()) ;
bf8f1fbd 788 recParticles->Expand(recParticles->GetEntriesFast() ) ;
9688c1dd 789
7b7c1533 790 //Make branch in TreeR for RecParticles
7acf6008 791 char * filename = 0;
792 if(gSystem->Getenv("CONFIG_SPLIT_FILE")!=0){ //generating file name
793 filename = new char[strlen(gAlice->GetBaseFile())+20] ;
794 sprintf(filename,"%s/PHOS.Reco.root",gAlice->GetBaseFile()) ;
795 }
bf8f1fbd 796
7acf6008 797 TDirectory *cwd = gDirectory;
798
799 //First rp
800 Int_t bufferSize = 32000 ;
7b7c1533 801 TBranch * rpBranch = gAlice->TreeR()->Branch("PHOSRP",&recParticles,bufferSize);
bf8f1fbd 802 rpBranch->SetTitle(fRecParticlesTitle);
7acf6008 803 if (filename) {
804 rpBranch->SetFile(filename);
805 TIter next( rpBranch->GetListOfBranches());
761e34c0 806 TBranch * sb ;
807 while ((sb=(TBranch*)next())) {
808 sb->SetFile(filename);
7acf6008 809 }
810 cwd->cd();
811 }
9688c1dd 812
7acf6008 813 //second, pid
814 Int_t splitlevel = 0 ;
815 AliPHOSPIDv1 * pid = this ;
7b7c1533 816 TBranch * pidBranch = gAlice->TreeR()->Branch("AliPHOSPID","AliPHOSPIDv1",&pid,bufferSize,splitlevel);
9688c1dd 817 pidBranch->SetTitle(fRecParticlesTitle.Data());
7acf6008 818 if (filename) {
819 pidBranch->SetFile(filename);
820 TIter next( pidBranch->GetListOfBranches());
761e34c0 821 TBranch * sb ;
822 while ((sb=(TBranch*)next())) {
823 sb->SetFile(filename);
7acf6008 824 }
825 cwd->cd();
826 }
827
761e34c0 828 rpBranch->Fill() ;
a496c46c 829 pidBranch->Fill() ;
9688c1dd 830
7acf6008 831 gAlice->TreeR()->Write(0,kOverwrite) ;
7b7c1533 832
148b2bba 833 delete [] filename ;
7acf6008 834}
69183710 835
7acf6008 836//____________________________________________________________________________
9688c1dd 837TVector3 AliPHOSPIDv1::GetMomentumDirection(AliPHOSEmcRecPoint * emc, AliPHOSRecPoint * cpv)const
7acf6008 838{
839 // Calculates the momentum direction:
840 // 1. if only a EMC RecPoint, direction is given by IP and this RecPoint
9688c1dd 841 // 2. if a EMC RecPoint and CPV RecPoint, direction is given by the line through the 2 recpoints
842 // However because of the poor position resolution of PPSD the direction is always taken as if we were
7acf6008 843 // in case 1.
844
845 TVector3 dir(0,0,0) ;
846
847 TVector3 emcglobalpos ;
848 TMatrix dummy ;
849
850 emc->GetGlobalPosition(emcglobalpos, dummy) ;
851
148b2bba 852
7acf6008 853 dir = emcglobalpos ;
854 dir.SetZ( -dir.Z() ) ; // why ?
855 dir.SetMag(1.) ;
856
857 //account correction to the position of IP
858 Float_t xo,yo,zo ; //Coordinates of the origin
859 gAlice->Generator()->GetOrigin(xo,yo,zo) ;
860 TVector3 origin(xo,yo,zo);
861 dir = dir - origin ;
862
863 return dir ;
864}
865//____________________________________________________________________________
a4e98857 866void AliPHOSPIDv1::PrintRecParticles(Option_t * option)
867{
dd5c4038 868 // Print table of reconstructed particles
869
7b7c1533 870 AliPHOSGetter *gime = AliPHOSGetter::GetInstance() ;
bf8f1fbd 871
a496c46c 872 TClonesArray * recParticles = gime->RecParticles(BranchName()) ;
9688c1dd 873
01a599c9 874 cout << "AliPHOSPIDv1: event "<<gAlice->GetEvNumber() << endl ;
7b7c1533 875 cout << " found " << recParticles->GetEntriesFast() << " RecParticles " << endl ;
9688c1dd 876
7acf6008 877 if(strstr(option,"all")) { // printing found TS
878
e0ed2e49 879 cout << " PARTICLE "
7acf6008 880 << " Index " << endl ;
7acf6008 881
882 Int_t index ;
7b7c1533 883 for (index = 0 ; index < recParticles->GetEntries() ; index++) {
148b2bba 884 AliPHOSRecParticle * rp = (AliPHOSRecParticle * ) recParticles->At(index) ;
e0ed2e49 885
886 cout << setw(10) << rp->Name() << " "
887 << setw(5) << rp->GetIndexInList() << " " <<endl;
888 cout << "Type "<< rp->GetType() << endl;
7acf6008 889 }
890 cout << "-------------------------------------------" << endl ;
891 }
892
69183710 893}
894
7acf6008 895
896