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update the parameters for the PCA
[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:
37// root [0] AliPHOSPIDv1 * p1 = new AliPHOSPIDv1("galice.root")
38// Warning in <TDatabasePDG::TDatabasePDG>: object already instantiated
39// root [1] p1->SetIdentificationMethod("disp ellipse")
40// root [2] p1->ExecuteTask()
148b2bba 41// root [3] AliPHOSPIDv1 * p2 = new AliPHOSPIDv1("galice1.root","v1")
a4e98857 42// Warning in <TDatabasePDG::TDatabasePDG>: object already instantiated
148b2bba 43// // reading headers from file galice1.root and create RecParticles with title v1
44 // TrackSegments and RecPoints with title "v1" are used
7acf6008 45// // set file name for the branch RecParticles
148b2bba 46// root [4] p2->ExecuteTask("deb all time")
7acf6008 47// // available options
48// // "deb" - prints # of reconstructed particles
49// // "deb all" - prints # and list of RecParticles
50// // "time" - prints benchmarking results
51//
148b2bba 52// root [5] AliPHOSPIDv1 * p3 = new AliPHOSPIDv1("galice1.root","v1","v0")
53// Warning in <TDatabasePDG::TDatabasePDG>: object already instantiated
54// // reading headers from file galice1.root and create RecParticles with title v1
55 // RecPoints and TrackSegments with title "v0" are used
56// root [6] p3->ExecuteTask()
7acf6008 57//*-- Author: Yves Schutz (SUBATECH) & Gines Martinez (SUBATECH) &
148b2bba 58// Gustavo Conesa April 2002
6ad0bfa0 59
60// --- ROOT system ---
7acf6008 61#include "TROOT.h"
62#include "TTree.h"
63#include "TFile.h"
64#include "TF2.h"
65#include "TFormula.h"
66#include "TCanvas.h"
67#include "TFolder.h"
68#include "TSystem.h"
69#include "TBenchmark.h"
148b2bba 70#include "TMatrixD.h"
71#include "TPrincipal.h"
72#include "TSystem.h"
73
6ad0bfa0 74// --- Standard library ---
75
de9ec31b 76#include <iostream.h>
148b2bba 77#include <fstream.h>
7acf6008 78#include <iomanip.h>
6ad0bfa0 79
80// --- AliRoot header files ---
81
7acf6008 82#include "AliRun.h"
83#include "AliGenerator.h"
84#include "AliPHOS.h"
26d4b141 85#include "AliPHOSPIDv1.h"
7acf6008 86#include "AliPHOSClusterizerv1.h"
6ad0bfa0 87#include "AliPHOSTrackSegment.h"
7acf6008 88#include "AliPHOSTrackSegmentMakerv1.h"
6ad0bfa0 89#include "AliPHOSRecParticle.h"
7b7c1533 90#include "AliPHOSGeometry.h"
91#include "AliPHOSGetter.h"
6ad0bfa0 92
26d4b141 93ClassImp( AliPHOSPIDv1)
6ad0bfa0 94
1cb7c1ee 95//____________________________________________________________________________
96AliPHOSPIDv1::AliPHOSPIDv1():AliPHOSPID()
97{
a4e98857 98 // default ctor
148b2bba 99
a496c46c 100 fFileName = "" ;
101 fFileNamePar = "" ;
102 fFrom = "" ;
103 fHeaderFileName = "" ;
e0ed2e49 104 fOptFileName = "Default" ;
a496c46c 105 fTrackSegmentsTitle = "" ;
106 fRecPointsTitle = "" ;
107 fRecParticlesTitle = "" ;
108
109 fNEvent = 0 ;
110 fClusterizer = 0 ;
111 fTSMaker = 0 ;
2685bf00 112 fRecParticlesInRun = 0 ;
a496c46c 113 fX = 0 ;
114 fP = 0 ;
115 fParameters = 0 ;
116
7acf6008 117}
118
119//____________________________________________________________________________
148b2bba 120AliPHOSPIDv1::AliPHOSPIDv1(const char * headerFile,const char * name, const char * from) : AliPHOSPID(headerFile, name)
e0ed2e49 121
122
7acf6008 123{
a4e98857 124 //ctor with the indication on where to look for the track segments
7b7c1533 125
126 fHeaderFileName = GetTitle() ;
127 fTrackSegmentsTitle = GetName() ;
128 fRecPointsTitle = GetName() ;
148b2bba 129 fRecParticlesTitle = GetName() ;
7b7c1533 130 TString tempo(GetName()) ;
bf8f1fbd 131 tempo.Append(":") ;
7b7c1533 132 tempo.Append(Version()) ;
bf8f1fbd 133 SetName(tempo) ;
2b60655b 134 fRecParticlesInRun = 0 ;
148b2bba 135 if ( from == 0 )
136 fFrom = name ;
137 else
138 fFrom = from ;
e0ed2e49 139 fOptFileName = "Default" ;
2bd5457f 140 Init() ;
7acf6008 141
142}
7b7c1533 143
7acf6008 144//____________________________________________________________________________
145AliPHOSPIDv1::~AliPHOSPIDv1()
146{
a496c46c 147
148 delete [] fX ; // Principal input
148b2bba 149 delete [] fP ; // Principal components
150 delete fParameters ; // Matrix of Parameters
7acf6008 151}
2bd5457f 152
a496c46c 153//____________________________________________________________________________
154const TString AliPHOSPIDv1::BranchName() const
155{
156 TString branchName(GetName() ) ;
157 branchName.Remove(branchName.Index(Version())-1) ;
158 return branchName ;
159}
160
148b2bba 161//____________________________________________________________________________
162void AliPHOSPIDv1::Init()
163{
164 // Make all memory allocations that are not possible in default constructor
165 // Add the PID task to the list of PHOS tasks
a496c46c 166
148b2bba 167 if ( strcmp(GetTitle(), "") == 0 )
168 SetTitle("galice.root") ;
169
a496c46c 170 SetParameters() ; // fill the parameters matrix from parameters file
e0ed2e49 171
148b2bba 172 AliPHOSGetter * gime = AliPHOSGetter::GetInstance(GetTitle(), fFrom.Data()) ;
173
a496c46c 174 gime->SetRecParticlesTitle(BranchName()) ;
148b2bba 175 if ( gime == 0 ) {
176 cerr << "ERROR: AliPHOSPIDv1::Init -> Could not obtain the Getter object !" << endl ;
177 return ;
178 }
a496c46c 179
148b2bba 180 gime->PostPID(this) ;
181 // create a folder on the white board //YSAlice/WhiteBoard/RecParticles/PHOS/recparticlesName
a496c46c 182 gime->PostRecParticles(BranchName()) ;
148b2bba 183
184}
69183710 185//____________________________________________________________________________
148b2bba 186Double_t AliPHOSPIDv1::GetCpvtoEmcDistanceCut(const Float_t Cluster_En, const TString Eff_Pur)const
187{
188 // Get CpvtoEmcDistanceCut parameter depending on the cluster energy and
189 // Purity-Efficiency point (possible options "HIGH EFFICIENCY"
190 // "MEDIUM EFFICIENCY" "LOW EFFICIENCY" and 3 more options changing
191 // EFFICIENCY by PURITY)
192
193 Int_t cluster = -1 ;
194 Int_t eff_pur = -1 ;
195
196 // Check the cluster energy range
197 if((Cluster_En > 0.3)&&(Cluster_En <= 1.0)) cluster = 0 ;
198 if((Cluster_En > 1.0)&&(Cluster_En <= 2.0)) cluster = 1 ;
199 if( Cluster_En > 2.0) cluster = 2 ;
200
e0ed2e49 201 if(Eff_Pur.Contains("HIGH EFFICIENCY") ||Eff_Pur.Contains("LOW PURITY") ) eff_pur = 0 ;
202 if(Eff_Pur.Contains("MEDIUM EFFICIENCY") ||Eff_Pur.Contains("MEDIUM PURITY") ) eff_pur = 1 ;
203 if(Eff_Pur.Contains("LOW EFFICIENCY")||Eff_Pur.Contains("HIGH PURITY") ) eff_pur = 2 ;
148b2bba 204
205 if(cluster ==-1){
206 cout<<"Invalid Cluster Energy option"<<endl;
207 }
208 else if(eff_pur ==-1){
209 cout<<"Invalid Efficiency-Purity option"<<endl;
210 }
211 else{
212 return (*fParameters)(cluster,eff_pur) ;
213 }
214}
215//____________________________________________________________________________
216
217Double_t AliPHOSPIDv1::GetTimeGate(const Float_t Cluster_En, const TString Eff_Pur) const
218{
219 // Get TimeGate parameter depending on the cluster energy and
220 // Purity-Efficiency point (possible options "HIGH EFFICIENCY"
221 // "MEDIUM EFFICIENCY" "LOW EFFICIENCY" and 3 more options changing
222 // EFFICIENCY by PURITY)
223 Int_t cluster = -1 ;
224 Int_t eff_pur = -1 ;
225
226 if((Cluster_En > 0.3)&&(Cluster_En <= 1.0)) cluster = 0 ;
227 if((Cluster_En > 1.0)&&(Cluster_En <= 2.0)) cluster = 1 ;
228 if( Cluster_En > 2.0) cluster = 2 ;
229
e0ed2e49 230 if(Eff_Pur.Contains("HIGH EFFICIENCY") ||Eff_Pur.Contains("LOW PURITY") ) eff_pur = 0 ;
231 if(Eff_Pur.Contains("MEDIUM EFFICIENCY") ||Eff_Pur.Contains("MEDIUM PURITY") ) eff_pur = 1 ;
232 if(Eff_Pur.Contains("LOW EFFICIENCY")||Eff_Pur.Contains("HIGH PURITY") ) eff_pur = 2 ;
233
148b2bba 234 if(cluster ==-1){
235 cout<<"Invalid Cluster Energy option"<<endl;
236 }
237 else if(eff_pur ==-1){
238 cout<<"Invalid Efficiency-Purity option"<<endl;
239 }
240 else{
241 return (*fParameters)(cluster+3,eff_pur) ;
242 }
243}
244//_____________________________________________________________________________
7acf6008 245Float_t AliPHOSPIDv1::GetDistance(AliPHOSEmcRecPoint * emc,AliPHOSRecPoint * cpv, Option_t * Axis)const
69183710 246{
247 // Calculates the distance between the EMC RecPoint and the PPSD RecPoint
148b2bba 248
7b7c1533 249 const AliPHOSGeometry * geom = AliPHOSGetter::GetInstance()->PHOSGeometry() ;
69183710 250 TVector3 vecEmc ;
7acf6008 251 TVector3 vecCpv ;
148b2bba 252 if(cpv){
253 emc->GetLocalPosition(vecEmc) ;
254 cpv->GetLocalPosition(vecCpv) ;
255 if(emc->GetPHOSMod() == cpv->GetPHOSMod()){
256 // Correct to difference in CPV and EMC position due to different distance to center.
257 // we assume, that particle moves from center
258 Float_t dCPV = geom->GetIPtoOuterCoverDistance();
259 Float_t dEMC = geom->GetIPtoCrystalSurface() ;
260 dEMC = dEMC / dCPV ;
261 vecCpv = dEMC * vecCpv - vecEmc ;
262 if (Axis == "X") return vecCpv.X();
263 if (Axis == "Y") return vecCpv.Y();
264 if (Axis == "Z") return vecCpv.Z();
265 if (Axis == "R") return vecCpv.Mag();
7acf6008 266 }
148b2bba 267
268 return 100000000 ;
269 }
7acf6008 270 return 100000000 ;
69183710 271}
272
6ad0bfa0 273//____________________________________________________________________________
148b2bba 274Int_t AliPHOSPIDv1::GetPrincipalSign(Double_t* P, Int_t cluster, Int_t eff_pur )const
275{
276 //This method gives if the PCA of the particle are inside a defined ellipse
277
278 // Get the parameters that define the ellipse stored in the
279 // fParameters matrix.
280 Double_t X_center = (*fParameters)(cluster+6,eff_pur) ;
281 Double_t Y_center = (*fParameters)(cluster+9,eff_pur) ;
282 Double_t A = (*fParameters)(cluster+12,eff_pur) ;
283 Double_t B = (*fParameters)(cluster+15,eff_pur) ;
284 Double_t Angle = (*fParameters)(cluster+18,eff_pur) ;
285
286 Int_t prinsign;
287 Double_t Dx = 0. ;
288 Double_t Delta = 0. ;
289 Double_t Y = 0. ;
290 Double_t Y_1 = 0. ;
291 Double_t Y_2 = 0. ;
292 Double_t Pi = TMath::Pi() ;
293 Double_t Cos_Theta = TMath::Cos(Pi*Angle/180.) ;
294 Double_t Sin_Theta = TMath::Sin(Pi*Angle/180.) ;
295
296 Dx = P[0] - X_center ;
297 Delta = 4.*A*A*A*B* (A*A*Cos_Theta*Cos_Theta
298 + B*B*Sin_Theta*Sin_Theta - Dx*Dx) ;
299 if (Delta < 0.)
300 {prinsign=0;}
301
302 else if (Delta == 0.)
303 {
304 Y = Cos_Theta*Sin_Theta*(A*A - B*B)*Dx /
305 (A*A*Cos_Theta*Cos_Theta + B*B*Sin_Theta*Sin_Theta) ;
306 Y += Y_center ;
307 if(P[1]==Y )
308 {prinsign=1;}
309 else
310 {prinsign=0;}
311 }
312 else
313 {
314 Y_1 = (Cos_Theta*Sin_Theta*(A*A - B*B) *Dx +
315 TMath::Sqrt(Delta)/2.)/(A*A*Cos_Theta*Cos_Theta +
316 B*B*Sin_Theta*Sin_Theta) ;
317 Y_2 = (Cos_Theta*Sin_Theta*(A*A - B*B) *Dx -
318 TMath::Sqrt(Delta)/2.)/(A*A*Cos_Theta*Cos_Theta
319 + B*B*Sin_Theta*Sin_Theta) ;
320 Y_1 += Y_center ;
321 Y_2 += Y_center ;
322 if ((P[1]<=Y_1) && (P[1]>=Y_2))
323 {prinsign=1;}
324 else
325 {prinsign=0;}
326 }
327 return prinsign;
328}
329
330//____________________________________________________________________________
e0ed2e49 331void AliPHOSPIDv1::SetPrincipalFileOptions(TString OptFileName) {
332
333 if(OptFileName.Contains("Small energy range")||OptFileName.Contains("Default")){
334 fFileName = "$ALICE_ROOT/PHOS/PCA8pa15_0.5-5.root" ;
335 fFileNamePar = gSystem->ExpandPathName("$ALICE_ROOT/PHOS/Parameters_0.5_5.dat");
336 }
337
338 if(OptFileName.Contains("Wide energy range")){
339 fFileName = "$ALICE_ROOT/PHOS/PCA8pa15_0.5-100.root" ;
340 fFileNamePar = gSystem->ExpandPathName("$ALICE_ROOT/PHOS/Parameters_0.5_100.dat");
341 }
342}
343
344//____________________________________________________________________________
345void 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 346{
347
348 // Set all ellipse parameters depending on the cluster energy and
349 // Purity-Efficiency point (possible options "HIGH EFFICIENCY"
350 // "MEDIUM EFFICIENCY" "LOW EFFICIENCY" and 3 more options changing
351 // EFFICIENCY by PURITY)
352
353 Int_t cluster = -1 ;
354 Int_t eff_pur = -1 ;
e0ed2e49 355
356 if((Cluster_En > 0.3)&&(Cluster_En <= 1.0)) cluster = 0 ;
357 if((Cluster_En > 1.0)&&(Cluster_En <= 2.0)) cluster = 1 ;
358 if( Cluster_En > 2.0) cluster= 2 ;
359
360 if(Eff_Pur.Contains("HIGH EFFICIENCY") ||Eff_Pur.Contains("LOW PURITY") ) eff_pur = 0 ;
361 if(Eff_Pur.Contains("MEDIUM EFFICIENCY") ||Eff_Pur.Contains("MEDIUM PURITY") ) eff_pur = 1 ;
362 if(Eff_Pur.Contains("LOW EFFICIENCY")||Eff_Pur.Contains("HIGH PURITY") ) eff_pur = 2 ;
363
364 if(cluster ==-1){
148b2bba 365 cout<<"Invalid Cluster Energy option"<<endl;
366 }
367 else if(eff_pur ==-1){
368 cout<<"Invalid Efficiency-Purity option"<<endl;
369 }
370 else{
371 (*fParameters)(cluster+6,eff_pur) = x ;
372 (*fParameters)(cluster+9,eff_pur) = y ;
373 (*fParameters)(cluster+12,eff_pur) = a ;
374 (*fParameters)(cluster+15,eff_pur) = b ;
375 (*fParameters)(cluster+18,eff_pur) = angle ;
376 }
377
378}
379//__________________________________________________________________________
380void AliPHOSPIDv1::SetEllipseXCenter(Float_t Cluster_En, TString Eff_Pur, Float_t x)
381{
382 // Set the ellipse parameter x_center depending on the custer energy and
383 // Purity-Efficiency point (possible options "HIGH EFFICIENCY"
384 // "MEDIUM EFFICIENCY" "LOW EFFICIENCY" and 3 more options changing
385 // EFFICIENCY by PURITY)
386
387 Int_t cluster = -1 ;
388 Int_t eff_pur = -1 ;
389
390 if((Cluster_En > 0.3)&&(Cluster_En <= 1.0)) cluster = 0 ;
391 if((Cluster_En > 1.0)&&(Cluster_En <= 2.0)) cluster = 1 ;
392 if( Cluster_En > 2.0) cluster = 2 ;
393
e0ed2e49 394 if(Eff_Pur.Contains("HIGH EFFICIENCY") ||Eff_Pur.Contains("LOW PURITY") ) eff_pur = 0 ;
395 if(Eff_Pur.Contains("MEDIUM EFFICIENCY") ||Eff_Pur.Contains("MEDIUM PURITY") ) eff_pur = 1 ;
396 if(Eff_Pur.Contains("LOW EFFICIENCY")||Eff_Pur.Contains("HIGH PURITY") ) eff_pur = 2 ;
148b2bba 397
398 if(cluster ==-1){
399 cout<<"Invalid Cluster Energy option"<<endl;
400 }
401 else if(eff_pur ==-1){
402 cout<<"Invalid Efficiency-Purity option"<<endl;
403 }
404 else{
405 (*fParameters)(cluster+6,eff_pur) = x ;
406 }
407}
408//_________________________________________________________________________
409void AliPHOSPIDv1::SetEllipseYCenter(Float_t Cluster_En, TString Eff_Pur, Float_t y)
410{
411
412 // Set the ellipse parameter y_center depending on the cluster energy and
413 // Purity-Efficiency point (possible options "HIGH EFFICIENCY"
414 // "MEDIUM EFFICIENCY" "LOW EFFICIENCY" and 3 more options changing
415 // EFFICIENCY by PURITY)
416
417 Int_t cluster = -1 ;
418 Int_t eff_pur = -1 ;
419
420 if((Cluster_En > 0.3)&&(Cluster_En <= 1.0)) cluster = 0 ;
421 if((Cluster_En > 1.0)&&(Cluster_En <= 2.0)) cluster = 1 ;
422 if( Cluster_En > 2.0) cluster = 2 ;
423
e0ed2e49 424 if(Eff_Pur.Contains("HIGH EFFICIENCY") ||Eff_Pur.Contains("LOW PURITY") ) eff_pur = 0 ;
425 if(Eff_Pur.Contains("MEDIUM EFFICIENCY") ||Eff_Pur.Contains("MEDIUM PURITY") ) eff_pur = 1 ;
426 if(Eff_Pur.Contains("LOW EFFICIENCY")||Eff_Pur.Contains("HIGH PURITY") ) eff_pur = 2 ;
148b2bba 427
428 if(cluster ==-1){
429 cout<<"Invalid Cluster Energy option"<<endl;
430 }
431 else if(eff_pur ==-1){
432 cout<<"Invalid Efficiency-Purity option"<<endl ;
433 }
434 else{
435 (*fParameters)(cluster+9,eff_pur) = y ;
436 }
437}
438//_________________________________________________________________________
439void AliPHOSPIDv1::SetEllipseAParameter(Float_t Cluster_En, TString Eff_Pur, Float_t a)
440{
441 // Set the ellipse parameter a 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
446 Int_t cluster = -1 ;
447 Int_t eff_pur = -1 ;
448
449 if((Cluster_En > 0.3)&&(Cluster_En <= 1.0)) cluster = 0 ;
450 if((Cluster_En > 1.0)&&(Cluster_En <= 2.0)) cluster = 1 ;
451 if( Cluster_En > 2.0) cluster = 2 ;
452
e0ed2e49 453 if(Eff_Pur.Contains("HIGH EFFICIENCY") ||Eff_Pur.Contains("LOW PURITY") ) eff_pur = 0 ;
454 if(Eff_Pur.Contains("MEDIUM EFFICIENCY") ||Eff_Pur.Contains("MEDIUM PURITY") ) eff_pur = 1 ;
455 if(Eff_Pur.Contains("LOW EFFICIENCY")||Eff_Pur.Contains("HIGH PURITY") ) eff_pur = 2 ;
148b2bba 456
457 if(cluster ==-1){
458 cout<<"Invalid Cluster Energy option"<<endl;
459 }
460 else if(eff_pur ==-1){
461 cout<<"Invalid Efficiency-Purity option"<<endl;
462 }
463 else{
464 (*fParameters)(cluster+12,eff_pur) = a ;
465 }
466}
467//________________________________________________________________________
468void AliPHOSPIDv1::SetEllipseBParameter(Float_t Cluster_En, TString Eff_Pur, Float_t b)
469{
470 // Set the ellipse parameter b depending on the cluster energy and
471 // Purity-Efficiency point (possible options "HIGH EFFICIENCY"
472 // "MEDIUM EFFICIENCY" "LOW EFFICIENCY" and 3 more options changing
473 // EFFICIENCY by PURITY)
474
475 Int_t cluster = -1 ;
476 Int_t eff_pur = -1 ;
e0ed2e49 477
148b2bba 478 if((Cluster_En > 0.3)&&(Cluster_En <= 1.0)) cluster = 0 ;
479 if((Cluster_En > 1.0)&&(Cluster_En <= 2.0)) cluster = 1 ;
480 if( Cluster_En > 2.0) cluster = 2 ;
481
e0ed2e49 482 if(Eff_Pur.Contains("HIGH EFFICIENCY") ||Eff_Pur.Contains("LOW PURITY") ) eff_pur = 0 ;
483 if(Eff_Pur.Contains("MEDIUM EFFICIENCY") ||Eff_Pur.Contains("MEDIUM PURITY") ) eff_pur = 1 ;
484 if(Eff_Pur.Contains("LOW EFFICIENCY")||Eff_Pur.Contains("HIGH PURITY") ) eff_pur = 2 ;
485
486 if(cluster ==-1){
487 cout<<"Invalid Cluster Energy option"<<endl;
488 }
489 else if(eff_pur ==-1){
148b2bba 490 cout<<"Invalid Efficiency-Purity option"<<endl;
e0ed2e49 491 }
492 else{
493 (*fParameters)(cluster+15,eff_pur) = b ;
494 }
148b2bba 495}
496//________________________________________________________________________
497void AliPHOSPIDv1::SetEllipseAngle(Float_t Cluster_En, TString Eff_Pur, Float_t angle)
498{
499
500 // Set the ellipse parameter angle depending on the cluster energy and
501 // Purity-Efficiency point (possible options "HIGH EFFICIENCY"
502 // "MEDIUM EFFICIENCY" "LOW EFFICIENCY" and 3 more options changing
503 // EFFICIENCY by PURITY)
504
505 Int_t cluster = -1 ;
506 Int_t eff_pur = -1 ;
507
508 if((Cluster_En > 0.3)&&(Cluster_En <= 1.0)) cluster = 0 ;
509 if((Cluster_En > 1.0)&&(Cluster_En <= 2.0)) cluster = 1 ;
510 if( Cluster_En > 2.0) cluster = 2 ;
511
e0ed2e49 512 if(Eff_Pur.Contains("HIGH EFFICIENCY") ||Eff_Pur.Contains("LOW PURITY") ) eff_pur = 0 ;
513 if(Eff_Pur.Contains("MEDIUM EFFICIENCY") ||Eff_Pur.Contains("MEDIUM PURITY") ) eff_pur = 1 ;
514 if(Eff_Pur.Contains("LOW EFFICIENCY")||Eff_Pur.Contains("HIGH PURITY") ) eff_pur = 2 ;
515
148b2bba 516 if(cluster ==-1){
517 cout<<"Invalid Cluster Energy option"<<endl;
518 }
519 else if(eff_pur ==-1){
520 cout<<"Invalid Efficiency-Purity option"<<endl;
521 }
522 else{
523 (*fParameters)(cluster+18,eff_pur) = angle ;
524 }
525}
526//_____________________________________________________________________________
527void AliPHOSPIDv1::SetCpvtoEmcDistanceCut(Float_t Cluster_En, TString Eff_Pur, Float_t cut)
528{
529
530 // Set the parameter Cpvto EmcDistanceCut depending on the cluster energy and
531 // Purity-Efficiency point (possible options "HIGH EFFICIENCY"
532 // "MEDIUM EFFICIENCY" "LOW EFFICIENCY" and 3 more options changing
533 // EFFICIENCY by PURITY)
534
535 Int_t cluster = -1 ;
536 Int_t eff_pur = -1 ;
537
538 if((Cluster_En > 0.3)&&(Cluster_En <= 1.0)) cluster = 0 ;
539 if((Cluster_En > 1.0)&&(Cluster_En <= 2.0)) cluster = 1 ;
540 if( Cluster_En > 2.0) cluster = 2 ;
541
e0ed2e49 542 if(Eff_Pur.Contains("HIGH EFFICIENCY") ||Eff_Pur.Contains("LOW PURITY") ) eff_pur = 0 ;
543 if(Eff_Pur.Contains("MEDIUM EFFICIENCY") ||Eff_Pur.Contains("MEDIUM PURITY") ) eff_pur = 1 ;
544 if(Eff_Pur.Contains("LOW EFFICIENCY")||Eff_Pur.Contains("HIGH PURITY") ) eff_pur = 2 ;
545
148b2bba 546 if(cluster ==-1){
547 cout<<"Invalid Cluster Energy option"<<endl;
548 }
549 else if(eff_pur ==-1){
550 cout<<"Invalid Efficiency-Purity option"<<endl;
551 }
552 else{
553 (*fParameters)(cluster,eff_pur) = cut ;
554 }
555}
a496c46c 556
557//_____________________________________________________________________________
558void AliPHOSPIDv1::SetParameters()
559{
560 // PCA : To do the Principal Components Analysis it is necessary
561 // the Principal file, which is opened here
562 fX = new double[7]; // Data for the PCA
563 fP = new double[7]; // Eigenvalues of the PCA
e0ed2e49 564
565 SetPrincipalFileOptions(fOptFileName);
a496c46c 566 TFile f( fFileName.Data(), "read" ) ;
567 fPrincipal = dynamic_cast<TPrincipal*> (f.Get("principal")) ;
568 f.Close() ;
569
570 // Initialization of the Parameters matrix. In the File Parameters.dat
571 // are all the parameters. These are introduced in a matrix of 21x3 elements.
572 // All the parameters defined in this file are, in order of row (there are
573 // 3 rows per parameter): CpvtoEmcDistanceCut, TimeGate (and the ellipse
574 // parameters), X_center, Y_center, a, b, angle. Each row of a given parameter
575 // depends on the cluster energy range (0.3-1,1-2, >2 )
576 // Each column designes the parameters for a point in the Efficiency-Purity
577 // of the photon identification P1(0.959,0.625), P2(0.919,0.835), P3(0.833,0.901).
578
579 fParameters = new TMatrixD(21,3) ;
580
a496c46c 581 ifstream paramFile(fFileNamePar, ios::in) ;
582
583 Int_t i,j ;
584
585 for(i = 0; i< 21; i++){
586 for(j = 0; j< 3; j++){
587 paramFile >> (*fParameters)(i,j) ;
588 }
589 }
590 paramFile.close();
591}
592
148b2bba 593//_____________________________________________________________________________
594void AliPHOSPIDv1::SetTimeGate(Float_t Cluster_En, TString Eff_Pur, Float_t gate)
595{
596
597 // Set the parameter TimeGate depending on the cluster energy and
598 // Purity-Efficiency point (possible options "HIGH EFFICIENCY"
599 // "MEDIUM EFFICIENCY" "LOW EFFICIENCY" and 3 more options changing
600 // EFFICIENCY by PURITY)
601
602 Int_t cluster = -1 ;
603 Int_t eff_pur = -1 ;
604
605 if((Cluster_En > 0.3)&&(Cluster_En <= 1.0)) cluster = 0 ;
606 if((Cluster_En > 1.0)&&(Cluster_En <= 2.0)) cluster = 1 ;
607 if( Cluster_En > 2.0) cluster = 2 ;
608
e0ed2e49 609 if(Eff_Pur.Contains("HIGH EFFICIENCY") ||Eff_Pur.Contains("LOW PURITY") ) eff_pur = 0 ;
610 if(Eff_Pur.Contains("MEDIUM EFFICIENCY") ||Eff_Pur.Contains("MEDIUM PURITY") ) eff_pur = 1 ;
611 if(Eff_Pur.Contains("LOW EFFICIENCY")||Eff_Pur.Contains("HIGH PURITY") ) eff_pur = 2 ;
148b2bba 612
613 if(cluster ==-1){
614 cout<<"Invalid Cluster Energy option"<<endl;
615 }
616 else if(eff_pur ==-1){
617 cout<<"Invalid Efficiency-Purity option"<<endl;
618 }
619 else{
620 (*fParameters)(cluster+3,eff_pur) = gate ;
621 }
622}
623//____________________________________________________________________________
624
7acf6008 625void AliPHOSPIDv1::Exec(Option_t * option)
6ad0bfa0 626{
f035f6ce 627 //Steering method
9688c1dd 628
bf8f1fbd 629 if( strcmp(GetName(), "")== 0 )
7acf6008 630 Init() ;
bf8f1fbd 631
632 if(strstr(option,"tim"))
7acf6008 633 gBenchmark->Start("PHOSPID");
bf8f1fbd 634
635 if(strstr(option,"print")) {
7b7c1533 636 Print("") ;
637 return ;
bf8f1fbd 638 }
9688c1dd 639
148b2bba 640 //cout << gDirectory->GetName() << endl ;
641
bf8f1fbd 642 gAlice->GetEvent(0) ;
148b2bba 643
7b7c1533 644 //check, if the branch with name of this" already exits?
645 TObjArray * lob = (TObjArray*)gAlice->TreeR()->GetListOfBranches() ;
646 TIter next(lob) ;
647 TBranch * branch = 0 ;
648 Bool_t phospidfound = kFALSE, pidfound = kFALSE ;
649
650 TString taskName(GetName()) ;
bf8f1fbd 651 taskName.Remove(taskName.Index(Version())-1) ;
9688c1dd 652
7b7c1533 653 while ( (branch = (TBranch*)next()) && (!phospidfound || !pidfound) ) {
654 if ( (strcmp(branch->GetName(), "PHOSPID")==0) && (strcmp(branch->GetTitle(), taskName.Data())==0) )
655 phospidfound = kTRUE ;
656
657 else if ( (strcmp(branch->GetName(), "AliPHOSPID")==0) && (strcmp(branch->GetTitle(), taskName.Data())==0) )
658 pidfound = kTRUE ;
659 }
9688c1dd 660
7b7c1533 661 if ( phospidfound || pidfound ) {
662 cerr << "WARNING: AliPHOSPIDv1::Exec -> RecParticles and/or PIDtMaker branch with name "
663 << taskName.Data() << " already exits" << endl ;
664 return ;
665 }
bf8f1fbd 666
7b7c1533 667 Int_t nevents = (Int_t) gAlice->TreeE()->GetEntries() ;
668 Int_t ievent ;
148b2bba 669 AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ;
7b7c1533 670 for(ievent = 0; ievent < nevents; ievent++){
a496c46c 671 gime->Event(ievent,"R") ;
148b2bba 672
7acf6008 673 MakeRecParticles() ;
9688c1dd 674
7b7c1533 675 WriteRecParticles(ievent);
9688c1dd 676
7acf6008 677 if(strstr(option,"deb"))
678 PrintRecParticles(option) ;
94de8339 679
680 //increment the total number of rec particles per run
a496c46c 681 fRecParticlesInRun += gime->RecParticles(BranchName())->GetEntriesFast() ;
94de8339 682
7acf6008 683 }
9688c1dd 684
7acf6008 685 if(strstr(option,"tim")){
686 gBenchmark->Stop("PHOSPID");
687 cout << "AliPHOSPID:" << endl ;
688 cout << " took " << gBenchmark->GetCpuTime("PHOSPID") << " seconds for PID "
7b7c1533 689 << gBenchmark->GetCpuTime("PHOSPID")/nevents << " seconds per event " << endl ;
7acf6008 690 cout << endl ;
691 }
9688c1dd 692
7b7c1533 693}
694
7acf6008 695//____________________________________________________________________________
696void AliPHOSPIDv1::MakeRecParticles(){
697
b2a60966 698 // Makes a RecParticle out of a TrackSegment
148b2bba 699
7b7c1533 700 AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ;
148b2bba 701 TObjArray * emcRecPoints = gime->EmcRecPoints(fFrom) ;
702 TObjArray * cpvRecPoints = gime->CpvRecPoints(fFrom) ;
703 TClonesArray * trackSegments = gime->TrackSegments(fFrom) ;
704 if ( !emcRecPoints || !cpvRecPoints || !trackSegments ) {
705 cerr << "ERROR: AliPHOSPIDv1::MakeRecParticles -> RecPoints or TrackSegments with name "
706 << fFrom << " not found ! " << endl ;
707 abort() ;
708 }
a496c46c 709 TClonesArray * recParticles = gime->RecParticles(BranchName()) ;
01a599c9 710 recParticles->Clear();
148b2bba 711
712
7b7c1533 713 TIter next(trackSegments) ;
7acf6008 714 AliPHOSTrackSegment * ts ;
6ad0bfa0 715 Int_t index = 0 ;
09fc14a0 716 AliPHOSRecParticle * rp ;
7acf6008 717
7acf6008 718 while ( (ts = (AliPHOSTrackSegment *)next()) ) {
fad3e5b9 719
7b7c1533 720 new( (*recParticles)[index] ) AliPHOSRecParticle() ;
721 rp = (AliPHOSRecParticle *)recParticles->At(index) ;
7acf6008 722 rp->SetTraskSegment(index) ;
9688c1dd 723 rp->SetIndexInList(index) ;
148b2bba 724
7acf6008 725 AliPHOSEmcRecPoint * emc = 0 ;
726 if(ts->GetEmcIndex()>=0)
7b7c1533 727 emc = (AliPHOSEmcRecPoint *) emcRecPoints->At(ts->GetEmcIndex()) ;
fad3e5b9 728
7acf6008 729 AliPHOSRecPoint * cpv = 0 ;
730 if(ts->GetCpvIndex()>=0)
7b7c1533 731 cpv = (AliPHOSRecPoint *) cpvRecPoints->At(ts->GetCpvIndex()) ;
fad3e5b9 732
7acf6008 733 //set momentum and energy first
734 Float_t e = emc->GetEnergy() ;
9688c1dd 735 TVector3 dir = GetMomentumDirection(emc,cpv) ;
7acf6008 736 dir.SetMag(e) ;
737
738 rp->SetMomentum(dir.X(),dir.Y(),dir.Z(),e) ;
739 rp->SetCalcMass(0);
fad3e5b9 740
148b2bba 741 // Now set type (reconstructed) of the particle
742
743 // Choose the cluster energy range
744 Int_t cluster = 0 ; // Ellipse and rcpv cut in function of the cluster energy
745 if((e > 0.3)&&(e <= 1.0)) cluster = 0 ;
746 if((e > 1.0)&&(e <= 2.0)) cluster = 1 ;
747 if( e > 2.0) cluster = 2 ;
748
749 // Loop of Efficiency-Purity (the 3 points of purity or efficiency are taken
750 // into account to set the particle identification)
751 for(Int_t eff_pur = 0; eff_pur < 3 ; eff_pur++){
752
753 // Looking at the CPV detector. If RCPV greater than CpvEmcDistance, 1st,
754 // 2nd or 3rd bit (depending on the efficiency-purity point )is set to 1 .
755 if(GetDistance(emc, cpv, "R") > (*fParameters)(cluster,eff_pur) )
756 rp->SetPIDBit(eff_pur) ;
757
758 // Looking the TOF. If TOF smaller than gate, 4th, 5th or 6th
759 // bit (depending on the efficiency-purity point )is set to 1
760 if(emc->GetTime()< (*fParameters)(cluster+3,eff_pur))
761 rp->SetPIDBit(eff_pur+3) ;
762
763 // Looking PCA. Define and calculate the data (X), introduce in the function
764 // X2P that gives the components (P).
765 Float_t fSpher = 0. ;
766 Float_t fEmaxdtotal = 0. ;
767 Float_t lambda[2] ;
768
769 emc->GetElipsAxis(lambda) ;
770 if((lambda[0]+lambda[1])!=0) fSpher=fabs(lambda[0]-lambda[1])/(lambda[0]+lambda[1]);
fad3e5b9 771
148b2bba 772 fEmaxdtotal=emc->GetMaximalEnergy()/emc->GetEnergy();
7acf6008 773
148b2bba 774 fX[0] = lambda[0] ;
775 fX[1] = lambda[1] ;
776 fX[2] = emc->GetDispersion() ;
777 fX[3] = fSpher ;
778 fX[4] = emc->GetMultiplicity() ;
779 fX[5] = fEmaxdtotal ;
780 fX[6] = emc->GetCoreEnergy() ;
7acf6008 781
148b2bba 782 fPrincipal->X2P(fX,fP);
783
784 //If we are inside the ellipse, 7th, 8th or 9th
785 // bit (depending on the efficiency-purity point )is set to 1
786 if(GetPrincipalSign(fP,cluster,eff_pur) == 1)
787 rp->SetPIDBit(eff_pur+6) ;
788
789 }
e0ed2e49 790
791 rp->Name(); //If photon sets the particle pdg name to gamma
e747b8da 792 rp->SetProductionVertex(0,0,0,0);
793 rp->SetFirstMother(-1);
794 rp->SetLastMother(-1);
795 rp->SetFirstDaughter(-1);
796 rp->SetLastDaughter(-1);
797 rp->SetPolarisation(0,0,0);
6ad0bfa0 798 index++ ;
799 }
7acf6008 800
6ad0bfa0 801}
802
09fc14a0 803//____________________________________________________________________________
a496c46c 804void AliPHOSPIDv1:: Print()
09fc14a0 805{
b2a60966 806 // Print the parameters used for the particle type identification
f035f6ce 807 cout << "=============== AliPHOSPID1 ================" << endl ;
808 cout << "Making PID "<< endl ;
809 cout << " Headers file: " << fHeaderFileName.Data() << endl ;
810 cout << " RecPoints branch title: " << fRecPointsTitle.Data() << endl ;
7b7c1533 811 cout << " TrackSegments Branch title: " << fTrackSegmentsTitle.Data() << endl ;
812 cout << " RecParticles Branch title " << fRecParticlesTitle.Data() << endl;
e0ed2e49 813 cout << " Matrix of Parameters: "<<endl;
814 cout << " 3 Columns [High Eff-Low Pur,Medium Eff-Pur, Low Eff-High Pur]"<<endl;
815 cout << " 21 Rows, each 3 [ RCPV, TOF, X_Center, Y_Center, A, B, Angle ]"<<endl;
816 SetParameters() ;
a496c46c 817 fParameters->Print() ;
f035f6ce 818 cout << "============================================" << endl ;
09fc14a0 819}
820
7acf6008 821//____________________________________________________________________________
7b7c1533 822void AliPHOSPIDv1::WriteRecParticles(Int_t event)
09fc14a0 823{
7b7c1533 824
825 AliPHOSGetter *gime = AliPHOSGetter::GetInstance() ;
a496c46c 826
827 TClonesArray * recParticles = gime->RecParticles(BranchName()) ;
bf8f1fbd 828 recParticles->Expand(recParticles->GetEntriesFast() ) ;
9688c1dd 829
7b7c1533 830 //Make branch in TreeR for RecParticles
7acf6008 831 char * filename = 0;
832 if(gSystem->Getenv("CONFIG_SPLIT_FILE")!=0){ //generating file name
833 filename = new char[strlen(gAlice->GetBaseFile())+20] ;
834 sprintf(filename,"%s/PHOS.Reco.root",gAlice->GetBaseFile()) ;
835 }
bf8f1fbd 836
7acf6008 837 TDirectory *cwd = gDirectory;
838
839 //First rp
840 Int_t bufferSize = 32000 ;
7b7c1533 841 TBranch * rpBranch = gAlice->TreeR()->Branch("PHOSRP",&recParticles,bufferSize);
bf8f1fbd 842 rpBranch->SetTitle(fRecParticlesTitle);
7acf6008 843 if (filename) {
844 rpBranch->SetFile(filename);
845 TIter next( rpBranch->GetListOfBranches());
761e34c0 846 TBranch * sb ;
847 while ((sb=(TBranch*)next())) {
848 sb->SetFile(filename);
7acf6008 849 }
850 cwd->cd();
851 }
9688c1dd 852
7acf6008 853 //second, pid
854 Int_t splitlevel = 0 ;
855 AliPHOSPIDv1 * pid = this ;
7b7c1533 856 TBranch * pidBranch = gAlice->TreeR()->Branch("AliPHOSPID","AliPHOSPIDv1",&pid,bufferSize,splitlevel);
9688c1dd 857 pidBranch->SetTitle(fRecParticlesTitle.Data());
7acf6008 858 if (filename) {
859 pidBranch->SetFile(filename);
860 TIter next( pidBranch->GetListOfBranches());
761e34c0 861 TBranch * sb ;
862 while ((sb=(TBranch*)next())) {
863 sb->SetFile(filename);
7acf6008 864 }
865 cwd->cd();
866 }
867
761e34c0 868 rpBranch->Fill() ;
a496c46c 869 pidBranch->Fill() ;
9688c1dd 870
7acf6008 871 gAlice->TreeR()->Write(0,kOverwrite) ;
7b7c1533 872
148b2bba 873 delete [] filename ;
7acf6008 874}
69183710 875
7acf6008 876//____________________________________________________________________________
9688c1dd 877TVector3 AliPHOSPIDv1::GetMomentumDirection(AliPHOSEmcRecPoint * emc, AliPHOSRecPoint * cpv)const
7acf6008 878{
879 // Calculates the momentum direction:
880 // 1. if only a EMC RecPoint, direction is given by IP and this RecPoint
9688c1dd 881 // 2. if a EMC RecPoint and CPV RecPoint, direction is given by the line through the 2 recpoints
882 // However because of the poor position resolution of PPSD the direction is always taken as if we were
7acf6008 883 // in case 1.
884
885 TVector3 dir(0,0,0) ;
886
887 TVector3 emcglobalpos ;
888 TMatrix dummy ;
889
890 emc->GetGlobalPosition(emcglobalpos, dummy) ;
891
148b2bba 892
7acf6008 893 dir = emcglobalpos ;
894 dir.SetZ( -dir.Z() ) ; // why ?
895 dir.SetMag(1.) ;
896
897 //account correction to the position of IP
898 Float_t xo,yo,zo ; //Coordinates of the origin
899 gAlice->Generator()->GetOrigin(xo,yo,zo) ;
900 TVector3 origin(xo,yo,zo);
901 dir = dir - origin ;
902
903 return dir ;
904}
905//____________________________________________________________________________
a4e98857 906void AliPHOSPIDv1::PrintRecParticles(Option_t * option)
907{
dd5c4038 908 // Print table of reconstructed particles
909
7b7c1533 910 AliPHOSGetter *gime = AliPHOSGetter::GetInstance() ;
bf8f1fbd 911
a496c46c 912 TClonesArray * recParticles = gime->RecParticles(BranchName()) ;
9688c1dd 913
01a599c9 914 cout << "AliPHOSPIDv1: event "<<gAlice->GetEvNumber() << endl ;
7b7c1533 915 cout << " found " << recParticles->GetEntriesFast() << " RecParticles " << endl ;
9688c1dd 916
7acf6008 917 if(strstr(option,"all")) { // printing found TS
918
e0ed2e49 919 cout << " PARTICLE "
7acf6008 920 << " Index " << endl ;
7acf6008 921
922 Int_t index ;
7b7c1533 923 for (index = 0 ; index < recParticles->GetEntries() ; index++) {
148b2bba 924 AliPHOSRecParticle * rp = (AliPHOSRecParticle * ) recParticles->At(index) ;
e0ed2e49 925
926 cout << setw(10) << rp->Name() << " "
927 << setw(5) << rp->GetIndexInList() << " " <<endl;
928 cout << "Type "<< rp->GetType() << endl;
7acf6008 929 }
930 cout << "-------------------------------------------" << endl ;
931 }
932
69183710 933}
934
7acf6008 935
936