Some correction in physics configuration.
[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:
bc0c084c 26// -Bit 0 to 2: bit set if RCPV > CpvEmcDistance (each bit corresponds
148b2bba 27// to a different efficiency-purity point of the photon identification)
bc0c084c 28// -Bit 3 to 5: bit set if TOF < TimeGate (each bit corresponds
148b2bba 29// to a different efficiency-purity point of the photon identification)
30// -Bit 6 to 9: bit set if Principal Components are
50739f15 31// inside an ellipse defined by the parameters a, b, c, x0 and y0.
148b2bba 32// (each bit corresponds to a different efficiency-purity point of the
50739f15 33// photon identification)
34// The PCA (Principal components analysis) needs a file that contains
35// a previous analysis of the correlations between the particles. This
bc0c084c 36// file is $ALICE_ROOT/PHOS/PCA8pa15_0.5-100.root. Analysis done for
50739f15 37// energies between 0.5 and 100 GeV.
9fa5f1d0 38// A calibrated energy is calculated. The energy of the reconstructed
50739f15 39// cluster is corrected with the formula A + B * E + C * E^2, whose
bc0c084c 40// parameters where obtained through the study of the reconstructed
50739f15 41// energy distribution of monoenergetic photons.
a4e98857 42//
bc0c084c 43// All the parameters (RCPV(2 rows-3 columns),TOF(1r-3c),PCA(5r-4c)
50739f15 44// and calibration(1r-3c))are stored in a file called
45// $ALICE_ROOT/PHOS/Parameters.dat. Each time that AliPHOSPIDv1 is
bc0c084c 46// initialized, this parameters are copied to a Matrix (9,4), a
50739f15 47// TMatrixD object.
7acf6008 48//
a4e98857 49// use case:
50739f15 50// root [0] AliPHOSPIDv1 * p = new AliPHOSPIDv1("galice1.root")
a4e98857 51// Warning in <TDatabasePDG::TDatabasePDG>: object already instantiated
50739f15 52// // reading headers from file galice1.root and create RecParticles
53 // TrackSegments and RecPoints are used
54// // set file name for the branch RecParticles
f0a4c9e9 55// root [1] p->ExecuteTask("deb all time")
50739f15 56// // available options
57// // "deb" - prints # of reconstructed particles
58// // "deb all" - prints # and list of RecParticles
59// // "time" - prints benchmarking results
7acf6008 60//
50739f15 61// root [2] AliPHOSPIDv1 * p2 = new AliPHOSPIDv1("galice1.root","v1",kTRUE)
148b2bba 62// Warning in <TDatabasePDG::TDatabasePDG>: object already instantiated
50739f15 63// //Split mode.
f0a4c9e9 64// root [3] p2->ExecuteTask()
65//
50739f15 66
f0a4c9e9 67
7acf6008 68//*-- Author: Yves Schutz (SUBATECH) & Gines Martinez (SUBATECH) &
148b2bba 69// Gustavo Conesa April 2002
50739f15 70// PCA redesigned by Gustavo Conesa October 2002:
71// The way of using the PCA has changed. Instead of 2
72// files with the PCA, each one with different energy ranges
73// of application, we use the wide one (0.5-100 GeV), and instead
bc0c084c 74// of fixing 3 ellipses for different ranges of energy, it has been
50739f15 75// studied the dependency of the ellipses parameters with the
76// energy, and they are implemented in the code as a funtion
77// of the energy.
78//
79//
80//
6ad0bfa0 81// --- ROOT system ---
c947e71a 82
83
84// --- Standard library ---
acb5beb7 85#include "TFormula.h"
7acf6008 86#include "TBenchmark.h"
148b2bba 87#include "TPrincipal.h"
c947e71a 88#include "TFile.h"
e3817e5f 89#include "TSystem.h"
148b2bba 90
6ad0bfa0 91// --- AliRoot header files ---
c947e71a 92 //#include "AliLog.h"
7acf6008 93#include "AliGenerator.h"
e3817e5f 94#include "AliPHOS.h"
26d4b141 95#include "AliPHOSPIDv1.h"
7b7c1533 96#include "AliPHOSGetter.h"
6ad0bfa0 97
26d4b141 98ClassImp( AliPHOSPIDv1)
6ad0bfa0 99
6ad0bfa0 100//____________________________________________________________________________
1cb7c1ee 101AliPHOSPIDv1::AliPHOSPIDv1():AliPHOSPID()
102{
a4e98857 103 // default ctor
148b2bba 104
8d0f3f77 105 InitParameters() ;
92f521a9 106 fDefaultInit = kTRUE ;
7acf6008 107}
108
109//____________________________________________________________________________
88cb7938 110AliPHOSPIDv1::AliPHOSPIDv1(const AliPHOSPIDv1 & pid ):AliPHOSPID(pid)
581354c5 111{
386aef34 112 // ctor
581354c5 113 InitParameters() ;
581354c5 114 Init() ;
581354c5 115
116}
117
118//____________________________________________________________________________
88cb7938 119AliPHOSPIDv1::AliPHOSPIDv1(const TString alirunFileName, const TString eventFolderName):AliPHOSPID(alirunFileName, eventFolderName)
7acf6008 120{
a4e98857 121 //ctor with the indication on where to look for the track segments
7b7c1533 122
8d0f3f77 123 InitParameters() ;
2bd5457f 124 Init() ;
92f521a9 125 fDefaultInit = kFALSE ;
7acf6008 126}
7b7c1533 127
7acf6008 128//____________________________________________________________________________
129AliPHOSPIDv1::~AliPHOSPIDv1()
130{
79bb1b62 131 // dtor
acb5beb7 132 fPrincipalPhoton = 0;
133 fPrincipalPi0 = 0;
9fa5f1d0 134
e3817e5f 135 delete [] fX ; // Principal input
136 delete [] fPPhoton ; // Photon Principal components
137 delete [] fPPi0 ; // Pi0 Principal components
acb5beb7 138
139 delete fParameters;
140 delete fTFphoton;
141 delete fTFpiong;
142 delete fTFkaong;
143 delete fTFkaonl;
144 delete fTFhhadrong;
145 delete fTFhhadronl;
146 delete fDFmuon;
7acf6008 147}
148b2bba 148//____________________________________________________________________________
a496c46c 149const TString AliPHOSPIDv1::BranchName() const
150{
88cb7938 151
152 return GetName() ;
a496c46c 153}
154
155//____________________________________________________________________________
148b2bba 156void AliPHOSPIDv1::Init()
157{
158 // Make all memory allocations that are not possible in default constructor
159 // Add the PID task to the list of PHOS tasks
a496c46c 160
adcca1e6 161 AliPHOSGetter * gime = AliPHOSGetter::Instance() ;
162 if(!gime)
163 gime = AliPHOSGetter::Instance(GetTitle(), fEventFolderName.Data()) ;
88cb7938 164
165 if ( !gime->PID() )
166 gime->PostPID(this) ;
148b2bba 167}
8d0f3f77 168
169//____________________________________________________________________________
170void AliPHOSPIDv1::InitParameters()
171{
e3817e5f 172 // Initialize PID parameters
adcca1e6 173 fWrite = kTRUE ;
8d0f3f77 174 fRecParticlesInRun = 0 ;
8d0f3f77 175 fNEvent = 0 ;
8d0f3f77 176 fRecParticlesInRun = 0 ;
35adb638 177 fBayesian = kTRUE ;
9fa5f1d0 178 SetParameters() ; // fill the parameters matrix from parameters file
eabde521 179 SetEventRange(0,-1) ;
35adb638 180
cc1fe362 181 // initialisation of response function parameters
182 // Tof
183 // Photons
35adb638 184 fTphoton[0] = 0.218 ;
185 //fTphoton[0] = 1. ;
186 fTphoton[1] = 1.55E-8 ;
187 fTphoton[2] = 5.05E-10 ;
188 fTFphoton = new TFormula("ToF response to photons" , "gaus") ;
cc1fe362 189 fTFphoton->SetParameters( fTphoton[0], fTphoton[1], fTphoton[2]) ;
35adb638 190// // Electrons
191// fTelectron[0] = 0.2 ;
192// fTelectron[1] = 1.55E-8 ;
193// fTelectron[2] = 5.35E-10 ;
194// fTFelectron = new TFormula("ToF response to electrons" , "gaus") ;
195// fTFelectron->SetParameters( fTelectron[0], fTelectron[1], fTelectron[2]) ;
196// // Muons
197// fTmuon[0] = 0.2 ;
198// fTmuon[1] = 1.55E-8 ;
199// fTmuon[2] = 5.1E-10 ;
200// fTFmuon = new TFormula("ToF response to muons" , "gaus") ;
201// fTFmuon->SetParameters( fTmuon[0], fTmuon[1], fTmuon[2]) ;
202
203 // Pions
204 //Gaus (0 to max probability)
205 fTpiong[0] = 0.0971 ;
206 //fTpiong[0] = 1. ;
207 fTpiong[1] = 1.58E-8 ;
208 fTpiong[2] = 5.69E-10 ;
209 fTFpiong = new TFormula("ToF response to pions" , "gaus") ;
210 fTFpiong->SetParameters( fTpiong[0], fTpiong[1], fTpiong[2]) ;
211 // Landau (max probability to inf)
212// fTpionl[0] = 0.05 ;
213// //fTpionl[0] = 5.53 ;
214// fTpionl[1] = 1.68E-8 ;
215// fTpionl[2] = 5.38E-10 ;
216// fTFpionl = new TFormula("ToF response to pions" , "landau") ;
217// fTFpionl->SetParameters( fTpionl[0], fTpionl[1], fTpionl[2]) ;
218
219
220 // Kaons
221 //Gaus (0 to max probability)
222 fTkaong[0] = 0.0542 ;
223 //fTkaong[0] = 1. ;
224 fTkaong[1] = 1.64E-8 ;
225 fTkaong[2] = 6.07-10 ;
226 fTFkaong = new TFormula("ToF response to kaon" , "gaus") ;
227 fTFkaong->SetParameters( fTkaong[0], fTkaong[1], fTkaong[2]) ;
228 //Landau (max probability to inf)
229 fTkaonl[0] = 0.264 ;
230 //fTkaonl[0] = 5.53 ;
231 fTkaonl[1] = 1.68E-8 ;
232 fTkaonl[2] = 4.10E-10 ;
233 fTFkaonl = new TFormula("ToF response to kaon" , "landau") ;
234 fTFkaonl->SetParameters( fTkaonl[0], fTkaonl[1], fTkaonl[2]) ;
235
236 //Heavy Hadrons
237 //Gaus (0 to max probability)
238 fThhadrong[0] = 0.0302 ;
239 //fThhadrong[0] = 1. ;
240 fThhadrong[1] = 1.73E-8 ;
241 fThhadrong[2] = 9.52E-10 ;
242 fTFhhadrong = new TFormula("ToF response to heavy hadrons" , "gaus") ;
243 fTFhhadrong->SetParameters( fThhadrong[0], fThhadrong[1], fThhadrong[2]) ;
244 //Landau (max probability to inf)
245 fThhadronl[0] = 0.139 ;
246 //fThhadronl[0] = 5.53 ;
247 fThhadronl[1] = 1.745E-8 ;
248 fThhadronl[2] = 1.00E-9 ;
249 fTFhhadronl = new TFormula("ToF response to heavy hadrons" , "landau") ;
250 fTFhhadronl->SetParameters( fThhadronl[0], fThhadronl[1], fThhadronl[2]) ;
251
252/// /gaussian parametrization for pions
253// fTpion[0] = 3.93E-2 ; fTpion[1] = 0.130 ; fTpion[2] =-6.37E-2 ;//constant
254// fTpion[3] = 1.65E-8 ; fTpion[4] =-1.40E-9 ; fTpion[5] = 5.96E-10;//mean
255// fTpion[6] = 8.09E-10; fTpion[7] =-4.65E-10; fTpion[8] = 1.50E-10;//sigma
256
257// //landau parametrization for kaons
258// fTkaon[0] = 0.107 ; fTkaon[1] = 0.166 ; fTkaon[2] = 0.243 ;//constant
259// fTkaon[3] = 1.80E-8 ; fTkaon[4] =-2.96E-9 ; fTkaon[5] = 9.60E-10;//mean
260// fTkaon[6] = 1.37E-9 ; fTkaon[7] =-1.80E-9 ; fTkaon[8] = 6.74E-10;//sigma
261
262// //landau parametrization for nucleons
263// fThhadron[0] = 6.33E-2 ; fThhadron[1] = 2.52E-2 ; fThhadron[2] = 2.16E-2 ;//constant
264// fThhadron[3] = 1.94E-8 ; fThhadron[4] =-7.06E-10; fThhadron[5] =-4.69E-10;//mean
265// fThhadron[6] = 2.55E-9 ; fThhadron[7] =-1.90E-9 ; fThhadron[8] = 5.41E-10;//sigma
266
267
268 // Shower shape: dispersion gaussian parameters
269 // Photons
270
c947e71a 271// fDphoton[0] = 3.84e-2; fDphoton[1] = 4.46e-3 ; fDphoton[2] = -2.36e-2;//constant
272// //fDphoton[0] = 1.0 ; fDphoton[1] = 0. ; fDphoton[2] = 0. ;//constant
273// fDphoton[3] = 1.55 ; fDphoton[4] =-0.0863 ; fDphoton[5] = 0.287 ;//mean
274// fDphoton[6] = 0.0451 ; fDphoton[7] =-0.0803 ; fDphoton[8] = 0.314 ;//sigma
275
276 fDphoton[0] = 4.62e-2; fDphoton[1] = 1.39e-2 ; fDphoton[2] = -3.80e-2;//constant
277 //fDphoton[0] = 1.0 ; fDphoton[1] = 0. ; fDphoton[2] = 0. ;//constant
278 fDphoton[3] = 1.53 ; fDphoton[4] =-6.62e-2 ; fDphoton[5] = 0.339 ;//mean
279 fDphoton[6] = 6.89e-2; fDphoton[7] =-6.59e-2 ; fDphoton[8] = 0.194 ;//sigma
35adb638 280
281 fDpi0[0] = 0.0586 ; fDpi0[1] = 1.06E-3 ; fDpi0[2] = 0. ;//constant
282 //fDpi0[0] = 1.0 ; fDpi0[1] = 0.0 ; fDpi0[2] = 0. ;//constant
283 fDpi0[3] = 2.67 ; fDpi0[4] =-2.00E-2 ; fDpi0[5] = 9.37E-5 ;//mean
284 fDpi0[6] = 0.153 ; fDpi0[7] = 9.34E-4 ; fDpi0[8] =-1.49E-5 ;//sigma
285 //landau
286// fDhadron[0] = 0.007 ; fDhadron[1] = 0. ; fDhadron[2] = 0. ;//constant
287// //fDhadron[0] = 5.53 ; fDhadron[1] = 0. ; fDhadron[2] = 0. ;//constant
288// fDhadron[3] = 3.38 ; fDhadron[4] = 0.0833 ; fDhadron[5] =-0.845 ;//mean
289// fDhadron[6] = 0.627 ; fDhadron[7] = 0.012 ; fDhadron[8] =-0.170 ;//sigma
290
c947e71a 291 fDhadron[0] = 1.61E-2 ; fDhadron[1] = 3.03E-3 ; fDhadron[2] = 1.01E-2 ;//constant
292 fDhadron[3] = 3.81 ; fDhadron[4] = 0.232 ; fDhadron[5] =-1.25 ;//mean
293 fDhadron[6] = 0.897 ; fDhadron[7] = 0.0987 ; fDhadron[8] =-0.534 ;//sigma
35adb638 294 // Muons
295 fDmuon[0] = 0.0631 ;
296 fDmuon[1] = 1.4 ;
297 fDmuon[2] = 0.0557 ;
298 fDFmuon = new TFormula("Shower shape response to muons" , "landau") ;
299 fDFmuon->SetParameters( fDmuon[0], fDmuon[1], fDmuon[2]) ;
300
35adb638 301
c947e71a 302 // x(CPV-EMC) distance gaussian parameters
303
304 fXelectron[0] = 8.06e-2 ; fXelectron[1] = 1.00e-2; fXelectron[2] =-5.14e-2;//constant
305 //fXelectron[0] = 1.0 ; fXelectron[1] = 0. ; fXelectron[2] = 0. ;//constant
306 fXelectron[3] = 0.202 ; fXelectron[4] = 8.15e-3; fXelectron[5] = 4.55 ;//mean
307 fXelectron[6] = 0.334 ; fXelectron[7] = 0.186 ; fXelectron[8] = 4.32e-2;//sigma
308
309 //charged hadrons gaus
310 fXcharged[0] = 6.43e-3 ; fXcharged[1] =-4.19e-5; fXcharged[2] = 1.42e-3;//constant
311 fXcharged[3] = 2.75 ; fXcharged[4] =-0.40 ; fXcharged[5] = 1.68 ;//mean
312 fXcharged[6] = 3.135 ; fXcharged[7] =-9.41e-2; fXcharged[8] = 1.31e-2;//sigma
313
314 // z(CPV-EMC) distance gaussian parameters
315
316 fZelectron[0] = 8.22e-2 ; fZelectron[1] = 5.11e-3; fZelectron[2] =-3.05e-2;//constant
317 //fZelectron[0] = 1.0 ; fZelectron[1] = 0. ; fZelectron[2] = 0. ;//constant
318 fZelectron[3] = 3.09e-2 ; fZelectron[4] = 5.87e-2; fZelectron[5] =-9.49e-2;//mean
319 fZelectron[6] = 0.263 ; fZelectron[7] =-9.02e-3; fZelectron[8] = 0.151 ;//sigma
320
321 //charged hadrons gaus
322
323 fZcharged[0] = 1.00e-2 ; fZcharged[1] = 2.82E-4 ; fZcharged[2] = 2.87E-3 ;//constant
324 fZcharged[3] =-4.68e-2 ; fZcharged[4] =-9.21e-3 ; fZcharged[5] = 4.91e-2 ;//mean
325 fZcharged[6] = 1.425 ; fZcharged[7] =-5.90e-2 ; fZcharged[8] = 5.07e-2 ;//sigma
326
35adb638 327 for (Int_t i =0; i< AliESDtrack::kSPECIESN ; i++)
328 fInitPID[i] = 1.;
329
8d0f3f77 330}
331
88cb7938 332//________________________________________________________________________
eabde521 333void AliPHOSPIDv1::Exec(Option_t *option)
88cb7938 334{
eabde521 335 // Steering method to perform particle reconstruction and identification
336 // for the event range from fFirstEvent to fLastEvent.
337 // This range is optionally set by SetEventRange().
338 // if fLastEvent=-1 (by default), then process events until the end.
61d3d6aa 339
88cb7938 340 if(strstr(option,"tim"))
341 gBenchmark->Start("PHOSPID");
342
343 if(strstr(option,"print")) {
344 Print() ;
345 return ;
346 }
347
348
adcca1e6 349 AliPHOSGetter * gime = AliPHOSGetter::Instance() ;
88cb7938 350
71cee46d 351 if (fLastEvent == -1)
352 fLastEvent = gime->MaxEvent() - 1 ;
353 else
354 fLastEvent = TMath::Min(fLastEvent,gime->MaxEvent());
eabde521 355 Int_t nEvents = fLastEvent - fFirstEvent + 1;
88cb7938 356
71cee46d 357 Int_t ievent ;
358 for (ievent = fFirstEvent; ievent <= fLastEvent; ievent++) {
88cb7938 359 gime->Event(ievent,"TR") ;
360 if(gime->TrackSegments() && //Skip events, where no track segments made
361 gime->TrackSegments()->GetEntriesFast()) {
362 MakeRecParticles() ;
35adb638 363
364 if(fBayesian)
365 MakePID() ;
366
90cceaf6 367 WriteRecParticles();
88cb7938 368 if(strstr(option,"deb"))
369 PrintRecParticles(option) ;
370 //increment the total number of rec particles per run
371 fRecParticlesInRun += gime->RecParticles()->GetEntriesFast() ;
372 }
373 }
ff417097 374 if(strstr(option,"deb"))
375 PrintRecParticles(option);
88cb7938 376 if(strstr(option,"tim")){
377 gBenchmark->Stop("PHOSPID");
351dd634 378 AliInfo(Form("took %f seconds for PID %f seconds per event",
88cb7938 379 gBenchmark->GetCpuTime("PHOSPID"),
351dd634 380 gBenchmark->GetCpuTime("PHOSPID")/nEvents)) ;
88cb7938 381 }
adcca1e6 382 if(fWrite)
383 Unload();
88cb7938 384}
385
35adb638 386//________________________________________________________________________
17323043 387Double_t AliPHOSPIDv1::GausF(Double_t x, Double_t y, Double_t * par)
35adb638 388{
c947e71a 389 //Given the energy x and the parameter y (tof, shower dispersion or cpv-emc distance),
390 //this method returns a density probability of this parameter, given by a gaussian
391 //function whose parameters depend with the energy with a function: a/(x*x)+b/x+b
392 Double_t cnt = par[1] / (x*x) + par[2] / x + par[0] ;
35adb638 393 Double_t mean = par[4] / (x*x) + par[5] / x + par[3] ;
394 Double_t sigma = par[7] / (x*x) + par[8] / x + par[6] ;
c947e71a 395
35adb638 396 // Double_t arg = - (y-mean) * (y-mean) / (2*sigma*sigma) ;
397 // return cnt * TMath::Exp(arg) ;
c947e71a 398 if(TMath::Abs(sigma) > 1.e-10){
acb5beb7 399 return cnt*TMath::Gaus(y,mean,sigma);
35adb638 400 }
401 else
402 return 0.;
c947e71a 403
35adb638 404}
405//________________________________________________________________________
17323043 406Double_t AliPHOSPIDv1::GausPol2(Double_t x, Double_t y, Double_t * par)
35adb638 407{
c947e71a 408 //Given the energy x and the parameter y (tof, shower dispersion or cpv-emc distance),
409 //this method returns a density probability of this parameter, given by a gaussian
410 //function whose parameters depend with the energy like second order polinomial
411
35adb638 412 Double_t cnt = par[0] + par[1] * x + par[2] * x * x ;
413 Double_t mean = par[3] + par[4] * x + par[5] * x * x ;
414 Double_t sigma = par[6] + par[7] * x + par[8] * x * x ;
415
c947e71a 416 if(TMath::Abs(sigma) > 1.e-10){
acb5beb7 417 return cnt*TMath::Gaus(y,mean,sigma);
35adb638 418 }
419 else
420 return 0.;
c947e71a 421
422
423
35adb638 424}
425
1cb7c1ee 426//____________________________________________________________________________
e3817e5f 427const TString AliPHOSPIDv1::GetFileNamePrincipal(TString particle) const
148b2bba 428{
e3817e5f 429 //Get file name that contains the PCA for a particle ("photon or pi0")
430 particle.ToLower();
431 TString name;
351dd634 432 if (particle=="photon")
433 name = fFileNamePrincipalPhoton ;
434 else if (particle=="pi0" )
435 name = fFileNamePrincipalPi0 ;
436 else
437 AliError(Form("Wrong particle name: %s (choose from pi0/photon)\n",
438 particle.Data()));
e3817e5f 439 return name;
440}
bc0c084c 441
e3817e5f 442//____________________________________________________________________________
fc7e2f43 443Float_t AliPHOSPIDv1::GetParameterCalibration(Int_t i) const
e3817e5f 444{
445 // Get the i-th parameter "Calibration"
446 Float_t param = 0.;
351dd634 447 if (i>2 || i<0) {
448 AliError(Form("Invalid parameter number: %d",i));
449 } else
e3817e5f 450 param = (*fParameters)(0,i);
451 return param;
452}
bc0c084c 453
e3817e5f 454//____________________________________________________________________________
fc7e2f43 455Float_t AliPHOSPIDv1::GetCalibratedEnergy(Float_t e) const
88cb7938 456{
457// It calibrates Energy depending on the recpoint energy.
458// The energy of the reconstructed cluster is corrected with
459// the formula A + B* E + C* E^2, whose parameters where obtained
460// through the study of the reconstructed energy distribution of
461// monoenergetic photons.
462
463 Float_t p[]={0.,0.,0.};
464 for (Int_t i=0; i<3; i++) p[i] = GetParameterCalibration(i);
465 Float_t enerec = p[0] + p[1]*e + p[2]*e*e;
466 return enerec ;
467
468}
469
470//____________________________________________________________________________
fc7e2f43 471Float_t AliPHOSPIDv1::GetParameterCpv2Emc(Int_t i, TString axis) const
e3817e5f 472{
473 // Get the i-th parameter "CPV-EMC distance" for the specified axis
474 Float_t param = 0.;
351dd634 475 if(i>2 || i<0) {
476 AliError(Form("Invalid parameter number: %d",i));
477 } else {
e3817e5f 478 axis.ToLower();
351dd634 479 if (axis == "x")
480 param = (*fParameters)(1,i);
481 else if (axis == "z")
482 param = (*fParameters)(2,i);
483 else {
484 AliError(Form("Invalid axis name: %s",axis.Data()));
485 }
e3817e5f 486 }
487 return param;
488}
489
490//____________________________________________________________________________
fc7e2f43 491Float_t AliPHOSPIDv1::GetCpv2EmcDistanceCut(TString axis, Float_t e) const
e3817e5f 492{
88cb7938 493 // Get CpvtoEmcDistance Cut depending on the cluster energy, axis and
494 // Purity-Efficiency point
495
496 axis.ToLower();
497 Float_t p[]={0.,0.,0.};
498 for (Int_t i=0; i<3; i++) p[i] = GetParameterCpv2Emc(i,axis);
499 Float_t sig = p[0] + TMath::Exp(p[1] - p[2]*e);
500 return sig;
e3817e5f 501}
502
88cb7938 503//____________________________________________________________________________
fc7e2f43 504Float_t AliPHOSPIDv1::GetEllipseParameter(TString particle, TString param, Float_t e) const
88cb7938 505{
506 // Calculates the parameter param of the ellipse
e3817e5f 507
508 particle.ToLower();
509 param. ToLower();
88cb7938 510 Float_t p[4]={0.,0.,0.,0.};
511 Float_t value = 0.0;
512 for (Int_t i=0; i<4; i++) p[i] = GetParameterToCalculateEllipse(particle,param,i);
513 if (particle == "photon") {
514 if (param.Contains("a")) e = TMath::Min((Double_t)e,70.);
515 else if (param.Contains("b")) e = TMath::Min((Double_t)e,70.);
516 else if (param.Contains("x0")) e = TMath::Max((Double_t)e,1.1);
517 }
e3817e5f 518
443caba9 519 if (particle == "photon")
520 value = p[0]/TMath::Sqrt(e) + p[1]*e + p[2]*e*e + p[3];
521 else if (particle == "pi0")
522 value = p[0] + p[1]*e + p[2]*e*e;
523
88cb7938 524 return value;
e3817e5f 525}
526
527//_____________________________________________________________________________
fc7e2f43 528Float_t AliPHOSPIDv1::GetParameterPhotonBoundary (Int_t i) const
e3817e5f 529{
530 // Get the parameter "i" to calculate the boundary on the moment M2x
531 // for photons at high p_T
532 Float_t param = 0;
351dd634 533 if (i>3 || i<0) {
534 AliError(Form("Wrong parameter number: %d\n",i));
535 } else
e3817e5f 536 param = (*fParameters)(14,i) ;
537 return param;
148b2bba 538}
e3817e5f 539
148b2bba 540//____________________________________________________________________________
fc7e2f43 541Float_t AliPHOSPIDv1::GetParameterPi0Boundary (Int_t i) const
e3817e5f 542{
543 // Get the parameter "i" to calculate the boundary on the moment M2x
544 // for pi0 at high p_T
545 Float_t param = 0;
351dd634 546 if (i>2 || i<0) {
547 AliError(Form("Wrong parameter number: %d\n",i));
548 } else
e3817e5f 549 param = (*fParameters)(15,i) ;
550 return param;
551}
148b2bba 552
e3817e5f 553//____________________________________________________________________________
fc7e2f43 554Float_t AliPHOSPIDv1::GetParameterTimeGate(Int_t i) const
e3817e5f 555{
88cb7938 556 // Get TimeGate parameter depending on Purity-Efficiency i:
557 // i=0 - Low purity, i=1 - Medium purity, i=2 - High purity
558 Float_t param = 0.;
351dd634 559 if(i>2 || i<0) {
560 AliError(Form("Invalid Efficiency-Purity choice %d",i));
561 } else
88cb7938 562 param = (*fParameters)(3,i) ;
563 return param;
e3817e5f 564}
565
e3817e5f 566//_____________________________________________________________________________
fc7e2f43 567Float_t AliPHOSPIDv1::GetParameterToCalculateEllipse(TString particle, TString param, Int_t i) const
88cb7938 568{
569 // Get the parameter "i" that is needed to calculate the ellipse
570 // parameter "param" for the particle "particle" ("photon" or "pi0")
571
e3817e5f 572 particle.ToLower();
573 param. ToLower();
88cb7938 574 Int_t offset = -1;
351dd634 575 if (particle == "photon")
576 offset=0;
577 else if (particle == "pi0")
578 offset=5;
e3817e5f 579 else
351dd634 580 AliError(Form("Wrong particle name: %s (choose from pi0/photon)\n",
581 particle.Data()));
88cb7938 582
583 Int_t p= -1;
584 Float_t par = 0;
e3817e5f 585
586 if (param.Contains("a")) p=4+offset;
587 else if(param.Contains("b")) p=5+offset;
588 else if(param.Contains("c")) p=6+offset;
589 else if(param.Contains("x0"))p=7+offset;
590 else if(param.Contains("y0"))p=8+offset;
12022e83 591
351dd634 592 if (i>4 || i<0) {
593 AliError(Form("No parameter with index %d", i)) ;
594 } else if (p==-1) {
595 AliError(Form("No parameter with name %s", param.Data() )) ;
596 } else
88cb7938 597 par = (*fParameters)(p,i) ;
598
599 return par;
12022e83 600}
601
12022e83 602
603//____________________________________________________________________________
8d4608b5 604Float_t AliPHOSPIDv1::GetDistance(AliPHOSEmcRecPoint * emc,AliPHOSCpvRecPoint * cpv, Option_t * axis)const
69183710 605{
606 // Calculates the distance between the EMC RecPoint and the PPSD RecPoint
148b2bba 607
88cb7938 608 const AliPHOSGeometry * geom = AliPHOSGetter::Instance()->PHOSGeometry() ;
69183710 609 TVector3 vecEmc ;
7acf6008 610 TVector3 vecCpv ;
148b2bba 611 if(cpv){
612 emc->GetLocalPosition(vecEmc) ;
613 cpv->GetLocalPosition(vecCpv) ;
2bb500e5 614
148b2bba 615 if(emc->GetPHOSMod() == cpv->GetPHOSMod()){
616 // Correct to difference in CPV and EMC position due to different distance to center.
617 // we assume, that particle moves from center
618 Float_t dCPV = geom->GetIPtoOuterCoverDistance();
619 Float_t dEMC = geom->GetIPtoCrystalSurface() ;
620 dEMC = dEMC / dCPV ;
621 vecCpv = dEMC * vecCpv - vecEmc ;
e3817e5f 622 if (axis == "X") return vecCpv.X();
623 if (axis == "Y") return vecCpv.Y();
624 if (axis == "Z") return vecCpv.Z();
625 if (axis == "R") return vecCpv.Mag();
626 }
148b2bba 627 return 100000000 ;
628 }
7acf6008 629 return 100000000 ;
69183710 630}
bc0c084c 631//____________________________________________________________________________
8d4608b5 632Int_t AliPHOSPIDv1::GetCPVBit(AliPHOSEmcRecPoint * emc,AliPHOSCpvRecPoint * cpv, Int_t effPur, Float_t e) const
bc0c084c 633{
c947e71a 634 //Calculates the pid bit for the CPV selection per each purity.
e3817e5f 635 if(effPur>2 || effPur<0)
351dd634 636 AliError(Form("Invalid Efficiency-Purity choice %d",effPur));
bc0c084c 637
e3817e5f 638 Float_t sigX = GetCpv2EmcDistanceCut("X",e);
639 Float_t sigZ = GetCpv2EmcDistanceCut("Z",e);
bc0c084c 640
641 Float_t deltaX = TMath::Abs(GetDistance(emc, cpv, "X"));
642 Float_t deltaZ = TMath::Abs(GetDistance(emc, cpv, "Z"));
35adb638 643 //Info("GetCPVBit"," xdist %f, sigx %f, zdist %f, sigz %f",deltaX, sigX, deltaZ,sigZ ) ;
644 if((deltaX>sigX*(effPur+1))&&(deltaZ>sigZ*(effPur+1)))
bc0c084c 645 return 1;//Neutral
646 else
647 return 0;//Charged
bc0c084c 648}
69183710 649
69183710 650//____________________________________________________________________________
fc7e2f43 651Int_t AliPHOSPIDv1::GetPrincipalBit(TString particle, const Double_t* p, Int_t effPur, Float_t e)const
148b2bba 652{
50739f15 653 //Is the particle inside de PCA ellipse?
581354c5 654
e3817e5f 655 particle.ToLower();
656 Int_t prinbit = 0 ;
657 Float_t a = GetEllipseParameter(particle,"a" , e);
658 Float_t b = GetEllipseParameter(particle,"b" , e);
659 Float_t c = GetEllipseParameter(particle,"c" , e);
660 Float_t x0 = GetEllipseParameter(particle,"x0", e);
661 Float_t y0 = GetEllipseParameter(particle,"y0", e);
662
663 Float_t r = TMath::Power((p[0] - x0)/a,2) +
664 TMath::Power((p[1] - y0)/b,2) +
665 c*(p[0] - x0)*(p[1] - y0)/(a*b) ;
50739f15 666 //3 different ellipses defined
e3817e5f 667 if((effPur==2) && (r<1./2.)) prinbit= 1;
668 if((effPur==1) && (r<2. )) prinbit= 1;
669 if((effPur==0) && (r<9./2.)) prinbit= 1;
50739f15 670
581354c5 671 if(r<0)
351dd634 672 AliError("Negative square?") ;
1f0e7ccd 673
674 return prinbit;
148b2bba 675
148b2bba 676}
1f0e7ccd 677//____________________________________________________________________________
fc7e2f43 678Int_t AliPHOSPIDv1::GetHardPhotonBit(AliPHOSEmcRecPoint * emc) const
1f0e7ccd 679{
e3817e5f 680 // Set bit for identified hard photons (E > 30 GeV)
681 // if the second moment M2x is below the boundary
682
683 Float_t e = emc->GetEnergy();
684 if (e < 30.0) return 0;
685 Float_t m2x = emc->GetM2x();
686 Float_t m2xBoundary = GetParameterPhotonBoundary(0) *
687 TMath::Exp(-TMath::Power(e-GetParameterPhotonBoundary(1),2)/2.0/
688 TMath::Power(GetParameterPhotonBoundary(2),2)) +
689 GetParameterPhotonBoundary(3);
351dd634 690 AliDebug(1, Form("GetHardPhotonBit","E=%f, m2x=%f, boundary=%f",
691 e,m2x,m2xBoundary));
e3817e5f 692 if (m2x < m2xBoundary)
693 return 1;// A hard photon
694 else
695 return 0;// Not a hard photon
1f0e7ccd 696}
92f521a9 697
e3817e5f 698//____________________________________________________________________________
fc7e2f43 699Int_t AliPHOSPIDv1::GetHardPi0Bit(AliPHOSEmcRecPoint * emc) const
e3817e5f 700{
701 // Set bit for identified hard pi0 (E > 30 GeV)
702 // if the second moment M2x is above the boundary
703
704 Float_t e = emc->GetEnergy();
705 if (e < 30.0) return 0;
706 Float_t m2x = emc->GetM2x();
707 Float_t m2xBoundary = GetParameterPi0Boundary(0) +
708 e * GetParameterPi0Boundary(1);
351dd634 709 AliDebug(1,Form("E=%f, m2x=%f, boundary=%f",e,m2x,m2xBoundary));
e3817e5f 710 if (m2x > m2xBoundary)
711 return 1;// A hard pi0
bc0c084c 712 else
e3817e5f 713 return 0;// Not a hard pi0
f0a4c9e9 714}
e3817e5f 715
716//____________________________________________________________________________
8d4608b5 717TVector3 AliPHOSPIDv1::GetMomentumDirection(AliPHOSEmcRecPoint * emc, AliPHOSCpvRecPoint * )const
88cb7938 718{
719 // Calculates the momentum direction:
720 // 1. if only a EMC RecPoint, direction is given by IP and this RecPoint
721 // 2. if a EMC RecPoint and CPV RecPoint, direction is given by the line through the 2 recpoints
722 // However because of the poor position resolution of PPSD the direction is always taken as if we were
723 // in case 1.
f0a4c9e9 724
88cb7938 725 TVector3 dir(0,0,0) ;
9688c1dd 726
88cb7938 727 TVector3 emcglobalpos ;
728 TMatrix dummy ;
bf8f1fbd 729
88cb7938 730 emc->GetGlobalPosition(emcglobalpos, dummy) ;
bf8f1fbd 731
e3817e5f 732
88cb7938 733 dir = emcglobalpos ;
88cb7938 734 dir.SetMag(1.) ;
e3817e5f 735
88cb7938 736 //account correction to the position of IP
737 Float_t xo,yo,zo ; //Coordinates of the origin
adcca1e6 738 if(gAlice && gAlice->GetMCApp() && gAlice->Generator())
739 gAlice->Generator()->GetOrigin(xo,yo,zo) ;
740 else{
741 xo=yo=zo=0.;
742 }
88cb7938 743 TVector3 origin(xo,yo,zo);
744 dir = dir - origin ;
e3817e5f 745
88cb7938 746 return dir ;
7acf6008 747}
7b7c1533 748
35adb638 749//________________________________________________________________________
17323043 750Double_t AliPHOSPIDv1::LandauF(Double_t x, Double_t y, Double_t * par)
35adb638 751{
c947e71a 752 //Given the energy x and the parameter y (tof, shower dispersion or cpv-emc distance),
753 //this method returns a density probability of this parameter, given by a landau
754 //function whose parameters depend with the energy with a function: a/(x*x)+b/x+b
755
756 Double_t cnt = par[1] / (x*x) + par[2] / x + par[0] ;
35adb638 757 Double_t mean = par[4] / (x*x) + par[5] / x + par[3] ;
758 Double_t sigma = par[7] / (x*x) + par[8] / x + par[6] ;
c947e71a 759
760 if(TMath::Abs(sigma) > 1.e-10){
acb5beb7 761 return cnt*TMath::Landau(y,mean,sigma);
35adb638 762 }
763 else
764 return 0.;
765
766}
767//________________________________________________________________________
17323043 768Double_t AliPHOSPIDv1::LandauPol2(Double_t x, Double_t y, Double_t * par)
35adb638 769{
c947e71a 770
771 //Given the energy x and the parameter y (tof, shower dispersion or cpv-emc distance),
772 //this method returns a density probability of this parameter, given by a landau
773 //function whose parameters depend with the energy like second order polinomial
774
35adb638 775 Double_t cnt = par[2] * (x*x) + par[1] * x + par[0] ;
c947e71a 776 Double_t mean = par[5] * (x*x) + par[4] * x + par[3] ;
777 Double_t sigma = par[8] * (x*x) + par[7] * x + par[6] ;
35adb638 778
c947e71a 779 if(TMath::Abs(sigma) > 1.e-10){
acb5beb7 780 return cnt*TMath::Landau(y,mean,sigma);
35adb638 781 }
782 else
783 return 0.;
c947e71a 784
785
35adb638 786}
787// //________________________________________________________________________
788// Double_t AliPHOSPIDv1::ChargedHadronDistProb(Double_t x, Double_t y, Double_t * parg, Double_t * parl)
789// {
790// Double_t cnt = 0.0 ;
791// Double_t mean = 0.0 ;
792// Double_t sigma = 0.0 ;
793// Double_t arg = 0.0 ;
794// if (y < parl[4] / (x*x) + parl[5] / x + parl[3]){
795// cnt = parg[1] / (x*x) + parg[2] / x + parg[0] ;
796// mean = parg[4] / (x*x) + parg[5] / x + parg[3] ;
797// sigma = parg[7] / (x*x) + parg[8] / x + parg[6] ;
798// TF1 * f = new TF1("gaus","gaus",0.,100.);
799// f->SetParameters(cnt,mean,sigma);
800// arg = f->Eval(y) ;
801// }
802// else{
803// cnt = parl[1] / (x*x) + parl[2] / x + parl[0] ;
804// mean = parl[4] / (x*x) + parl[5] / x + parl[3] ;
805// sigma = parl[7] / (x*x) + parl[8] / x + parl[6] ;
806// TF1 * f = new TF1("landau","landau",0.,100.);
807// f->SetParameters(cnt,mean,sigma);
808// arg = f->Eval(y) ;
809// }
810// // Double_t mean = par[3] + par[4] * x + par[5] * x * x ;
811// // Double_t sigma = par[6] + par[7] * x + par[8] * x * x ;
812
813// //Double_t arg = -(y-mean)*(y-mean)/(2*sigma*sigma) ;
814// //return cnt * TMath::Exp(arg) ;
815
816// return arg;
817
818// }
7b7c1533 819//____________________________________________________________________________
2cc71c1e 820void AliPHOSPIDv1::MakePID()
821{
822 // construct the PID weight from a Bayesian Method
c947e71a 823
2cc71c1e 824 Int_t index ;
cc1fe362 825 const Int_t kSPECIES = AliESDtrack::kSPECIESN ;
2cc71c1e 826 Int_t nparticles = AliPHOSGetter::Instance()->RecParticles()->GetEntriesFast() ;
c947e71a 827
828 // const Int_t kMAXPARTICLES = 2000 ;
829 // if (nparticles >= kMAXPARTICLES)
830 // Error("MakePID", "Change size of MAXPARTICLES") ;
831 // Double_t stof[kSPECIES][kMAXPARTICLES] ;
832
53ab54c8 833// const Int_t kMAXPARTICLES = 2000 ;
834// if (nparticles >= kMAXPARTICLES)
351dd634 835// AliError("Change size of MAXPARTICLES") ;
53ab54c8 836// Double_t stof[kSPECIES][kMAXPARTICLES] ;
53ab54c8 837
35adb638 838 Double_t * stof[kSPECIES] ;
839 Double_t * sdp [kSPECIES] ;
840 Double_t * scpv[kSPECIES] ;
841
842 //Info("MakePID","Begin MakePID");
843
844 for (Int_t i =0; i< kSPECIES; i++){
845 stof[i] = new Double_t[nparticles] ;
846 sdp [i] = new Double_t[nparticles] ;
847 scpv[i] = new Double_t[nparticles] ;
848 }
849
cc1fe362 850 // make the normalized distribution of pid for this event
851 // w(pid) in the Bayesian formulation
2cc71c1e 852 for(index = 0 ; index < nparticles ; index ++) {
cc1fe362 853
35adb638 854 AliPHOSRecParticle * recpar = AliPHOSGetter::Instance()->RecParticle(index) ;
855 AliPHOSEmcRecPoint * emc = AliPHOSGetter::Instance()->EmcRecPoint(index) ;
856 AliPHOSCpvRecPoint * cpv = AliPHOSGetter::Instance()->CpvRecPoint(index) ;
cc1fe362 857
35adb638 858 Float_t en = emc->GetEnergy();
c947e71a 859
35adb638 860 // Tof
c947e71a 861
862 // Info("MakePID", "TOF");
35adb638 863 Double_t time = recpar->ToF() ;
864 //cout<<">>>>>>>Energy "<<en<<"Time "<<time<<endl;
865 //Electrons initial population to be removed
866 fInitPID[AliESDtrack::kEleCon] = 0. ;
cc1fe362 867
35adb638 868 // now get the signals probability
869 // s(pid) in the Bayesian formulation
cc1fe362 870
c947e71a 871 stof[AliESDtrack::kPhoton][index] = 1.;
872 stof[AliESDtrack::kElectron][index] = 1.;
873 stof[AliESDtrack::kPion][index] = 1.;
874 stof[AliESDtrack::kKaon][index] = 1.;
875 stof[AliESDtrack::kProton][index] = 1.;
876 stof[AliESDtrack::kNeutron][index] = 1.;
877 stof[AliESDtrack::kEleCon][index] = 1.;
878 stof[AliESDtrack::kKaon0][index] = 1.;
879 stof[AliESDtrack::kMuon][index] = 1.;
880
35adb638 881 if(en < 2.) {
c947e71a 882 stof[AliESDtrack::kPhoton][index] = fTFphoton ->Eval(time) ; //gaus distribution
883 stof[AliESDtrack::kPion][index] = fTFpiong ->Eval(time) ; //gaus distribution
884 stof[AliESDtrack::kElectron][index] = stof[AliESDtrack::kPion][index] ;
885
35adb638 886 if(time < fTkaonl[1])
887 stof[AliESDtrack::kKaon][index] = fTFkaong ->Eval(time) ; //gaus distribution
888 else
889 stof[AliESDtrack::kKaon][index] = fTFkaonl ->Eval(time) ; //landau distribution
890 if(time < fThhadronl[1])
891 stof[AliESDtrack::kProton][index] = fTFhhadrong ->Eval(time) ; //gaus distribution
892 else
893 stof[AliESDtrack::kProton][index] = fTFhhadronl ->Eval(time) ; //landau distribution
c947e71a 894
35adb638 895 stof[AliESDtrack::kNeutron][index] = stof[AliESDtrack::kProton][index] ;
896 stof[AliESDtrack::kEleCon][index] = stof[AliESDtrack::kPhoton][index] ;
897 // a conversion electron has the photon ToF
898 stof[AliESDtrack::kKaon0][index] = stof[AliESDtrack::kKaon][index] ;
899 stof[AliESDtrack::kMuon][index] = stof[AliESDtrack::kPhoton][index] ;
cc1fe362 900 }
c947e71a 901
902 // Info("MakePID", "Dispersion");
cc1fe362 903
35adb638 904 // Shower shape: Dispersion
905 Float_t dispersion = emc->GetDispersion();
906 //dispersion is not well defined if the cluster is only in few crystals
cc1fe362 907
c947e71a 908 sdp[AliESDtrack::kPhoton][index] = 1. ;
909 sdp[AliESDtrack::kElectron][index] = 1. ;
910 sdp[AliESDtrack::kPion][index] = 1. ;
911 sdp[AliESDtrack::kKaon][index] = 1. ;
912 sdp[AliESDtrack::kProton][index] = 1. ;
913 sdp[AliESDtrack::kNeutron][index] = 1. ;
914 sdp[AliESDtrack::kEleCon][index] = 1. ;
915 sdp[AliESDtrack::kKaon0][index] = 1. ;
916 sdp[AliESDtrack::kMuon][index] = 1. ;
917
918 if(en > 0.5 && emc->GetMultiplicity() > 3){
35adb638 919 sdp[AliESDtrack::kPhoton][index] = GausF (en , dispersion, fDphoton) ;
920 sdp[AliESDtrack::kElectron][index] = sdp[AliESDtrack::kPhoton][index] ;
921 sdp[AliESDtrack::kPion][index] = LandauF(en , dispersion, fDhadron ) ;
922 sdp[AliESDtrack::kKaon][index] = sdp[AliESDtrack::kPion][index] ;
923 sdp[AliESDtrack::kProton][index] = sdp[AliESDtrack::kPion][index] ;
924 sdp[AliESDtrack::kNeutron][index] = sdp[AliESDtrack::kPion][index] ;
925 sdp[AliESDtrack::kEleCon][index] = sdp[AliESDtrack::kPhoton][index];
926 sdp[AliESDtrack::kKaon0][index] = sdp[AliESDtrack::kPion][index] ;
927 sdp[AliESDtrack::kMuon][index] = fDFmuon ->Eval(dispersion) ; //landau distribution
928 }
cc1fe362 929
c947e71a 930// Info("MakePID","multiplicity %d, dispersion %f", emc->GetMultiplicity(), dispersion);
931// Info("MakePID","ss: photon %f, hadron %f ", sdp[AliESDtrack::kPhoton][index], sdp[AliESDtrack::kPion][index]);
adcca1e6 932
c947e71a 933// cout<<">>>>>multiplicity "<<emc->GetMultiplicity()<<", dispersion "<< dispersion<<endl ;
934// cout<<"<<<<<ss: photon "<<sdp[AliESDtrack::kPhoton][index]<<", hadron "<<sdp[AliESDtrack::kPion][index]<<endl;
935
35adb638 936 // CPV-EMC Distance
c947e71a 937 // Info("MakePID", "Distance");
938 // Float_t distance = GetDistance(emc, cpv, "R") ;
939 Float_t x = TMath::Abs(GetDistance(emc, cpv, "X")) ;
940 Float_t z = GetDistance(emc, cpv, "Z") ;
35adb638 941 // Info("MakePID", "Distance %f", distance);
c947e71a 942 Double_t pcpv = 0 ;
943 Double_t pcpvneutral = 0. ;
944 Double_t elprobx = GausF(en , x, fXelectron) ;
945 Double_t elprobz = GausF(en , z, fZelectron) ;
946 Double_t chprobx = GausF(en , x, fXcharged) ;
947 Double_t chprobz = GausF(en , z, fZcharged) ;
948 Double_t pcpvelectron = elprobx * elprobz;
949 Double_t pcpvcharged = chprobx * chprobz;
950
951// cout<<">>>>electron : x "<<x<<" xprob "<<elprobx<<" z "<<z<<" zprob "<<elprobz<<endl;
952// cout<<">>>>hadron : x "<<x<<" xprob "<<chprobx<<" z "<<z<<" zprob "<<chprobz<<endl;
953// cout<<">>>>electron : px*pz "<<pcpvelectron <<" hadron: px*pz "<<pcpvcharged<<endl;
954
35adb638 955 if(pcpvelectron >= pcpvcharged)
956 pcpv = pcpvelectron ;
957 else
958 pcpv = pcpvcharged ;
959
c947e71a 960 if(pcpv < 1e-7)
35adb638 961 {
962 pcpvneutral = 1. ;
963 pcpvcharged = 0. ;
964 pcpvelectron = 0. ;
965 }
c947e71a 966 // else
967 // cout<<">>>>>>>>>>>CHARGED>>>>>>>>>>>"<<endl;
35adb638 968
969 scpv[AliESDtrack::kPion][index] = pcpvcharged ;
970 scpv[AliESDtrack::kKaon][index] = pcpvcharged ;
971 scpv[AliESDtrack::kProton][index] = pcpvcharged ;
972 scpv[AliESDtrack::kPhoton][index] = pcpvneutral ;
973 scpv[AliESDtrack::kElectron][index] = pcpvelectron ;
974 scpv[AliESDtrack::kNeutron][index] = pcpvneutral ;
975 scpv[AliESDtrack::kEleCon][index] = pcpvelectron ;
976 scpv[AliESDtrack::kKaon0][index] = pcpvneutral ;
977 scpv[AliESDtrack::kMuon][index] = pcpvelectron ;
978
979 // Info("MakePID", "CPV passed");
c947e71a 980
981 //Pi0
982 stof[AliESDtrack::kPi0][index] = 0. ;
983 scpv[AliESDtrack::kPi0][index] = 0. ;
984 sdp [AliESDtrack::kPi0][index] = 0. ;
985 fInitPID[AliESDtrack::kPi0] = 0. ;
986
35adb638 987 if(en > 30.){
988 // pi0 are detected via decay photon
989 stof[AliESDtrack::kPi0][index] = fTFphoton ->Eval(time) ;
990 scpv[AliESDtrack::kPi0][index] = pcpvneutral ;
c947e71a 991 sdp [AliESDtrack::kPi0][index] = 1. ;
992 if(emc->GetMultiplicity() > 3)
35adb638 993 sdp [AliESDtrack::kPi0][index] = GausPol2(en , dispersion, fDpi0) ;
35adb638 994 }
995
996 if(en > 0.5){
997 //Muons deposit few energy
c947e71a 998 scpv[AliESDtrack::kMuon][index] = 0 ;
999 stof[AliESDtrack::kMuon][index] = 0 ;
1000 sdp [AliESDtrack::kMuon][index] = 0 ;
1001 }
1002
1003 if(en > 0.5){
1004 cout<<"######################################################"<<endl;
1005 //cout<<"MakePID: energy "<<en<<", tof "<<time<<", distance "<<distance<<", dispersion "<<dispersion<<endl ;
1006 cout<<"MakePID: energy "<<en<<", tof "<<time<<", dispersion "<<dispersion<<", x "<<x<<", z "<<z<<endl ;
1007 cout<<">>>>>multiplicity "<<emc->GetMultiplicity()<<endl;
1008 cout<<">>>>electron : xprob "<<elprobx<<" zprob "<<elprobz<<endl;
1009 cout<<">>>>hadron : xprob "<<chprobx<<" zprob "<<chprobz<<endl;
1010 cout<<">>>>electron : px*pz "<<pcpvelectron <<" hadron: px*pz "<<pcpvcharged<<endl;
1011
1012
1013 cout<<"Photon , pid "<< fInitPID[AliESDtrack::kPhoton]<<" tof "<<stof[AliESDtrack::kPhoton][index]
1014 <<", cpv "<<scpv[AliESDtrack::kPhoton][index]<<", ss "<<sdp[AliESDtrack::kPhoton][index]<<endl;
1015 cout<<"EleCon , pid "<< fInitPID[AliESDtrack::kEleCon]<<", tof "<<stof[AliESDtrack::kEleCon][index]
1016 <<", cpv "<<scpv[AliESDtrack::kEleCon][index]<<" ss "<<sdp[AliESDtrack::kEleCon][index]<<endl;
1017 cout<<"Electron , pid "<< fInitPID[AliESDtrack::kElectron]<<", tof "<<stof[AliESDtrack::kElectron][index]
1018 <<", cpv "<<scpv[AliESDtrack::kElectron][index]<<" ss "<<sdp[AliESDtrack::kElectron][index]<<endl;
1019 cout<<"Muon , pid "<< fInitPID[AliESDtrack::kMuon]<<", tof "<<stof[AliESDtrack::kMuon][index]
1020 <<", cpv "<<scpv[AliESDtrack::kMuon][index]<<" ss "<<sdp[AliESDtrack::kMuon][index]<<endl;
1021 cout<<"Pi0 , pid "<< fInitPID[AliESDtrack::kPi0]<<", tof "<<stof[AliESDtrack::kPi0][index]
1022 <<", cpv "<<scpv[AliESDtrack::kPi0][index]<<" ss "<<sdp[AliESDtrack::kPi0][index]<<endl;
1023 cout<<"Pion , pid "<< fInitPID[AliESDtrack::kPion]<<", tof "<<stof[AliESDtrack::kPion][index]
1024 <<", cpv "<<scpv[AliESDtrack::kPion][index]<<" ss "<<sdp[AliESDtrack::kPion][index]<<endl;
1025 cout<<"Kaon0 , pid "<< fInitPID[AliESDtrack::kKaon0]<<", tof "<<stof[AliESDtrack::kKaon0][index]
1026 <<", cpv "<<scpv[AliESDtrack::kKaon0][index]<<" ss "<<sdp[AliESDtrack::kKaon0][index]<<endl;
1027 cout<<"Kaon , pid "<< fInitPID[AliESDtrack::kKaon]<<", tof "<<stof[AliESDtrack::kKaon][index]
1028 <<", cpv "<<scpv[AliESDtrack::kKaon][index]<<" ss "<<sdp[AliESDtrack::kKaon][index]<<endl;
1029 cout<<"Neutron , pid "<< fInitPID[AliESDtrack::kNeutron]<<", tof "<<stof[AliESDtrack::kNeutron][index]
1030 <<", cpv "<<scpv[AliESDtrack::kNeutron][index]<<" ss "<<sdp[AliESDtrack::kNeutron][index]<<endl;
1031 cout<<"Proton , pid "<< fInitPID[AliESDtrack::kProton]<<", tof "<<stof[AliESDtrack::kProton][index]
1032 <<", cpv "<<scpv[AliESDtrack::kProton][index]<<" ss "<<sdp[AliESDtrack::kProton][index]<<endl;
1033 cout<<"######################################################"<<endl;
35adb638 1034 }
cc1fe362 1035 }
35adb638 1036
1037 //for (index = 0 ; index < kSPECIES ; index++)
1038 // pid[index] /= nparticles ;
1039
1040 // Info("MakePID", "Total Probability calculation");
1041
cc1fe362 1042 for(index = 0 ; index < nparticles ; index ++) {
1043 // calculates the Bayesian weight
1044 Int_t jndex ;
1045 Double_t wn = 0.0 ;
1046 for (jndex = 0 ; jndex < kSPECIES ; jndex++)
35adb638 1047 //wn += stof[jndex][index] * pid[jndex] ;
1048 wn += stof[jndex][index] * sdp[jndex][index] * scpv[jndex][index] * fInitPID[jndex] ;
1049 //cout<<"*************wn "<<wn<<endl;
cc1fe362 1050 AliPHOSRecParticle * recpar = AliPHOSGetter::Instance()->RecParticle(index) ;
e74ea0e9 1051 if (TMath::Abs(wn)>0)
1052 for (jndex = 0 ; jndex < kSPECIES ; jndex++) {
35adb638 1053 //cout<<"jndex "<<jndex<<" wn "<<wn<<" SetPID * wn"
1054 //<<stof[jndex][index] * sdp[jndex][index] * pid[jndex] << endl;
1055 //cout<<" tof "<<stof[jndex][index] << " disp " <<sdp[jndex][index] << " pid "<< fInitPID[jndex] << endl;
1056// cout<<"Particle "<<jndex<<" final prob * wn "
1057// <<stof[jndex][index] * sdp[jndex][index] * scpv[jndex][index] * fInitPID[jndex] <<" wn "<< wn<<endl;
1058 recpar->SetPID(jndex, stof[jndex][index] * sdp[jndex][index] *
1059 scpv[jndex][index] * fInitPID[jndex] / wn) ;
1060// cout<<"final prob "<<stof[jndex][index] * sdp[jndex][index] * scpv[jndex][index] * fInitPID[jndex] / wn<<endl;
1061 //recpar->SetPID(jndex, stof[jndex][index] * fInitPID[jndex] / wn) ;
1062 //cout<<"After SetPID"<<endl;
1063 //recpar->Print();
e74ea0e9 1064 }
2cc71c1e 1065 }
35adb638 1066 // Info("MakePID", "Delete");
1067
acb5beb7 1068 for (Int_t i =0; i< kSPECIES; i++){
1069 delete [] stof[i];
1070 delete [] sdp[i];
1071 delete [] scpv[i];
1072 }
35adb638 1073 // Info("MakePID","End MakePID");
2cc71c1e 1074}
1075
1076//____________________________________________________________________________
e3817e5f 1077void AliPHOSPIDv1::MakeRecParticles()
1078{
b2a60966 1079 // Makes a RecParticle out of a TrackSegment
148b2bba 1080
88cb7938 1081 AliPHOSGetter * gime = AliPHOSGetter::Instance() ;
fbf811ec 1082 TObjArray * emcRecPoints = gime->EmcRecPoints() ;
1083 TObjArray * cpvRecPoints = gime->CpvRecPoints() ;
1084 TClonesArray * trackSegments = gime->TrackSegments() ;
148b2bba 1085 if ( !emcRecPoints || !cpvRecPoints || !trackSegments ) {
351dd634 1086 AliFatal("RecPoints or TrackSegments not found !") ;
148b2bba 1087 }
fbf811ec 1088 TClonesArray * recParticles = gime->RecParticles() ;
01a599c9 1089 recParticles->Clear();
148b2bba 1090
7b7c1533 1091 TIter next(trackSegments) ;
7acf6008 1092 AliPHOSTrackSegment * ts ;
6ad0bfa0 1093 Int_t index = 0 ;
09fc14a0 1094 AliPHOSRecParticle * rp ;
7acf6008 1095 while ( (ts = (AliPHOSTrackSegment *)next()) ) {
fad3e5b9 1096
7b7c1533 1097 new( (*recParticles)[index] ) AliPHOSRecParticle() ;
1098 rp = (AliPHOSRecParticle *)recParticles->At(index) ;
f0a4c9e9 1099 rp->SetTrackSegment(index) ;
9688c1dd 1100 rp->SetIndexInList(index) ;
148b2bba 1101
7acf6008 1102 AliPHOSEmcRecPoint * emc = 0 ;
1103 if(ts->GetEmcIndex()>=0)
7b7c1533 1104 emc = (AliPHOSEmcRecPoint *) emcRecPoints->At(ts->GetEmcIndex()) ;
fad3e5b9 1105
8d4608b5 1106 AliPHOSCpvRecPoint * cpv = 0 ;
7acf6008 1107 if(ts->GetCpvIndex()>=0)
8d4608b5 1108 cpv = (AliPHOSCpvRecPoint *) cpvRecPoints->At(ts->GetCpvIndex()) ;
fad3e5b9 1109
bd76890a 1110 Int_t track = 0 ;
1111 track = ts->GetTrackIndex() ;
1112
148b2bba 1113 // Now set type (reconstructed) of the particle
1114
1115 // Choose the cluster energy range
9fa5f1d0 1116
fbf811ec 1117 if (!emc) {
351dd634 1118 AliFatal(Form("-> emc(%d) = %d", ts->GetEmcIndex(), emc )) ;
fbf811ec 1119 }
50739f15 1120
e3817e5f 1121 Float_t e = emc->GetEnergy() ;
bc0c084c 1122
6f969528 1123 Float_t lambda[2] ;
1124 emc->GetElipsAxis(lambda) ;
50739f15 1125
1126 if((lambda[0]>0.01) && (lambda[1]>0.01)){
1127 // Looking PCA. Define and calculate the data (X),
bc0c084c 1128 // introduce in the function X2P that gives the components (P).
1129
c947e71a 1130 Float_t spher = 0. ;
1131 Float_t emaxdtotal = 0. ;
50739f15 1132
bc0c084c 1133 if((lambda[0]+lambda[1])!=0)
c947e71a 1134 spher=fabs(lambda[0]-lambda[1])/(lambda[0]+lambda[1]);
50739f15 1135
c947e71a 1136 emaxdtotal=emc->GetMaximalEnergy()/emc->GetEnergy();
50739f15 1137
1138 fX[0] = lambda[0] ;
1139 fX[1] = lambda[1] ;
1140 fX[2] = emc->GetDispersion() ;
c947e71a 1141 fX[3] = spher ;
50739f15 1142 fX[4] = emc->GetMultiplicity() ;
c947e71a 1143 fX[5] = emaxdtotal ;
50739f15 1144 fX[6] = emc->GetCoreEnergy() ;
1145
e3817e5f 1146 fPrincipalPhoton->X2P(fX,fPPhoton);
1147 fPrincipalPi0 ->X2P(fX,fPPi0);
1f0e7ccd 1148
50739f15 1149 }
1150 else{
e3817e5f 1151 fPPhoton[0]=-100.0; //We do not accept clusters with
1152 fPPhoton[1]=-100.0; //one cell as a photon-like
1153 fPPi0[0] =-100.0;
1154 fPPi0[1] =-100.0;
50739f15 1155 }
1156
2cc71c1e 1157 Float_t time = emc->GetTime() ;
1158 rp->SetTof(time) ;
9fa5f1d0 1159
bc0c084c 1160 // Loop of Efficiency-Purity (the 3 points of purity or efficiency
1161 // are taken into account to set the particle identification)
e3817e5f 1162 for(Int_t effPur = 0; effPur < 3 ; effPur++){
50739f15 1163
bc0c084c 1164 // Looking at the CPV detector. If RCPV greater than CpvEmcDistance,
1165 // 1st,2nd or 3rd bit (depending on the efficiency-purity point )
1166 // is set to 1
35adb638 1167 if(GetCPVBit(emc, cpv, effPur,e) == 1 ){
e3817e5f 1168 rp->SetPIDBit(effPur) ;
35adb638 1169 //cout<<"CPV bit "<<effPur<<endl;
1170 }
50739f15 1171 // Looking the TOF. If TOF smaller than gate, 4th, 5th or 6th
1172 // bit (depending on the efficiency-purity point )is set to 1
2cc71c1e 1173 if(time< (*fParameters)(3,effPur))
e3817e5f 1174 rp->SetPIDBit(effPur+3) ;
2cc71c1e 1175
e3817e5f 1176 //Photon PCA
50739f15 1177 //If we are inside the ellipse, 7th, 8th or 9th
1178 // bit (depending on the efficiency-purity point )is set to 1
e3817e5f 1179 if(GetPrincipalBit("photon",fPPhoton,effPur,e) == 1)
1180 rp->SetPIDBit(effPur+6) ;
1f0e7ccd 1181
e3817e5f 1182 //Pi0 PCA
1f0e7ccd 1183 //If we are inside the ellipse, 10th, 11th or 12th
1184 // bit (depending on the efficiency-purity point )is set to 1
e3817e5f 1185 if(GetPrincipalBit("pi0" ,fPPi0 ,effPur,e) == 1)
1186 rp->SetPIDBit(effPur+9) ;
f0a4c9e9 1187 }
e3817e5f 1188 if(GetHardPhotonBit(emc))
1189 rp->SetPIDBit(12) ;
1190 if(GetHardPi0Bit (emc))
1191 rp->SetPIDBit(13) ;
1f0e7ccd 1192
bd76890a 1193 if(track >= 0)
1194 rp->SetPIDBit(14) ;
1195
9fa5f1d0 1196 //Set momentum, energy and other parameters
50739f15 1197 Float_t encal = GetCalibratedEnergy(e);
9fa5f1d0 1198 TVector3 dir = GetMomentumDirection(emc,cpv) ;
1199 dir.SetMag(encal) ;
1200 rp->SetMomentum(dir.X(),dir.Y(),dir.Z(),encal) ;
1201 rp->SetCalcMass(0);
e0ed2e49 1202 rp->Name(); //If photon sets the particle pdg name to gamma
e747b8da 1203 rp->SetProductionVertex(0,0,0,0);
1204 rp->SetFirstMother(-1);
1205 rp->SetLastMother(-1);
1206 rp->SetFirstDaughter(-1);
1207 rp->SetLastDaughter(-1);
1208 rp->SetPolarisation(0,0,0);
d956e9b7 1209 //Set the position in global coordinate system from the RecPoint
1210 AliPHOSGeometry * geom = gime->PHOSGeometry() ;
1211 AliPHOSTrackSegment * ts = gime->TrackSegment(rp->GetPHOSTSIndex()) ;
1212 AliPHOSEmcRecPoint * erp = gime->EmcRecPoint(ts->GetEmcIndex()) ;
1213 TVector3 pos ;
1214 geom->GetGlobal(erp, pos) ;
1215 rp->SetPos(pos);
6ad0bfa0 1216 index++ ;
1217 }
6ad0bfa0 1218}
e3817e5f 1219
09fc14a0 1220//____________________________________________________________________________
88cb7938 1221void AliPHOSPIDv1::Print() const
09fc14a0 1222{
b2a60966 1223 // Print the parameters used for the particle type identification
bc0c084c 1224
351dd634 1225 AliInfo("=============== AliPHOSPIDv1 ================") ;
88cb7938 1226 printf("Making PID\n") ;
1227 printf(" Pricipal analysis file from 0.5 to 100 %s\n", fFileNamePrincipalPhoton.Data() ) ;
1228 printf(" Name of parameters file %s\n", fFileNameParameters.Data() ) ;
1229 printf(" Matrix of Parameters: 14x4\n") ;
1230 printf(" Energy Calibration 1x3 [3 parametres to calibrate energy: A + B* E + C * E^2]\n") ;
1231 printf(" RCPV 2x3 rows x and z, columns function cut parameters\n") ;
1232 printf(" TOF 1x3 [High Eff-Low Pur,Medium Eff-Pur, Low Eff-High Pur]\n") ;
1233 printf(" PCA 5x4 [5 ellipse parametres and 4 parametres to calculate them: A/Sqrt(E) + B* E + C * E^2 + D]\n") ;
1234 Printf(" Pi0 PCA 5x3 [5 ellipse parametres and 3 parametres to calculate them: A + B* E + C * E^2]\n") ;
50739f15 1235 fParameters->Print() ;
09fc14a0 1236}
1237
8d0f3f77 1238
69183710 1239
7acf6008 1240//____________________________________________________________________________
a4e98857 1241void AliPHOSPIDv1::PrintRecParticles(Option_t * option)
1242{
dd5c4038 1243 // Print table of reconstructed particles
1244
88cb7938 1245 AliPHOSGetter *gime = AliPHOSGetter::Instance() ;
bf8f1fbd 1246
88cb7938 1247 TClonesArray * recParticles = gime->RecParticles() ;
21cd0c07 1248
1249 TString message ;
3bf72d32 1250 message = "\nevent " ;
1251 message += gAlice->GetEvNumber() ;
1252 message += " found " ;
1253 message += recParticles->GetEntriesFast();
1254 message += " RecParticles\n" ;
1255
7acf6008 1256 if(strstr(option,"all")) { // printing found TS
3bf72d32 1257 message += "\n PARTICLE Index \n" ;
7acf6008 1258
1259 Int_t index ;
7b7c1533 1260 for (index = 0 ; index < recParticles->GetEntries() ; index++) {
21cd0c07 1261 AliPHOSRecParticle * rp = (AliPHOSRecParticle * ) recParticles->At(index) ;
3bf72d32 1262 message += "\n" ;
1263 message += rp->Name().Data() ;
1264 message += " " ;
1265 message += rp->GetIndexInList() ;
1266 message += " " ;
1267 message += rp->GetType() ;
7acf6008 1268 }
3bf72d32 1269 }
351dd634 1270 AliInfo(message.Data() ) ;
69183710 1271}
88cb7938 1272
1273//____________________________________________________________________________
1274void AliPHOSPIDv1::SetParameters()
1275{
1276 // PCA : To do the Principal Components Analysis it is necessary
1277 // the Principal file, which is opened here
1278 fX = new double[7]; // Data for the PCA
1279 fPPhoton = new double[7]; // Eigenvalues of the PCA
1280 fPPi0 = new double[7]; // Eigenvalues of the Pi0 PCA
1281
1282 // Read photon principals from the photon file
1283
1284 fFileNamePrincipalPhoton = "$ALICE_ROOT/PHOS/PCA8pa15_0.5-100.root" ;
1285 TFile f( fFileNamePrincipalPhoton.Data(), "read" ) ;
1286 fPrincipalPhoton = dynamic_cast<TPrincipal*> (f.Get("principal")) ;
1287 f.Close() ;
1288
1289 // Read pi0 principals from the pi0 file
1290
1291 fFileNamePrincipalPi0 = "$ALICE_ROOT/PHOS/PCA_pi0_40-120.root" ;
1292 TFile fPi0( fFileNamePrincipalPi0.Data(), "read" ) ;
1293 fPrincipalPi0 = dynamic_cast<TPrincipal*> (fPi0.Get("principal")) ;
1294 fPi0.Close() ;
1295
1296 // Open parameters file and initialization of the Parameters matrix.
1297 // In the File Parameters.dat are all the parameters. These are introduced
1298 // in a matrix of 16x4
1299 //
1300 // All the parameters defined in this file are, in order of row:
1301 // line 0 : calibration
1302 // lines 1,2 : CPV rectangular cat for X and Z
1303 // line 3 : TOF cut
1304 // lines 4-8 : parameters to calculate photon PCA ellipse
1305 // lines 9-13: parameters to calculate pi0 PCA ellipse
1306 // lines 14-15: parameters to calculate border for high-pt photons and pi0
1307
1308 fFileNameParameters = gSystem->ExpandPathName("$ALICE_ROOT/PHOS/Parameters.dat");
1309 fParameters = new TMatrix(16,4) ;
c947e71a 1310 const Int_t kMaxLeng=255;
1311 char string[kMaxLeng];
88cb7938 1312
1313 // Open a text file with PID parameters
1314 FILE *fd = fopen(fFileNameParameters.Data(),"r");
1315 if (!fd)
351dd634 1316 AliFatal(Form("File %s with a PID parameters cannot be opened\n",
1317 fFileNameParameters.Data()));
88cb7938 1318
1319 Int_t i=0;
1320 // Read parameter file line-by-line and skip empty line and comments
c947e71a 1321 while (fgets(string,kMaxLeng,fd) != NULL) {
88cb7938 1322 if (string[0] == '\n' ) continue;
1323 if (string[0] == '!' ) continue;
1324 sscanf(string, "%f %f %f %f",
1325 &(*fParameters)(i,0), &(*fParameters)(i,1),
1326 &(*fParameters)(i,2), &(*fParameters)(i,3));
1327 i++;
351dd634 1328 AliDebug(1, Form("SetParameters", "line %d: %s",i,string));
88cb7938 1329 }
1330 fclose(fd);
1331}
1332
1333//____________________________________________________________________________
1334void AliPHOSPIDv1::SetParameterCalibration(Int_t i,Float_t param)
1335{
1336 // Set parameter "Calibration" i to a value param
351dd634 1337 if(i>2 || i<0) {
1338 AliError(Form("Invalid parameter number: %d",i));
1339 } else
88cb7938 1340 (*fParameters)(0,i) = param ;
1341}
1342
1343//____________________________________________________________________________
1344void AliPHOSPIDv1::SetParameterCpv2Emc(Int_t i, TString axis, Float_t cut)
1345{
1346 // Set the parameters to calculate Cpv-to-Emc Distance Cut depending on
1347 // Purity-Efficiency point i
1348
351dd634 1349 if(i>2 || i<0) {
1350 AliError(Form("Invalid parameter number: %d",i));
1351 } else {
88cb7938 1352 axis.ToLower();
1353 if (axis == "x") (*fParameters)(1,i) = cut;
1354 else if (axis == "z") (*fParameters)(2,i) = cut;
351dd634 1355 else {
1356 AliError(Form("Invalid axis name: %s",axis.Data()));
1357 }
88cb7938 1358 }
1359}
1360
1361//____________________________________________________________________________
1362void AliPHOSPIDv1::SetParameterPhotonBoundary(Int_t i,Float_t param)
1363{
1364 // Set parameter "Hard photon boundary" i to a value param
351dd634 1365 if(i>4 || i<0) {
1366 AliError(Form("Invalid parameter number: %d",i));
1367 } else
88cb7938 1368 (*fParameters)(14,i) = param ;
1369}
1370
1371//____________________________________________________________________________
1372void AliPHOSPIDv1::SetParameterPi0Boundary(Int_t i,Float_t param)
1373{
1374 // Set parameter "Hard pi0 boundary" i to a value param
351dd634 1375 if(i>1 || i<0) {
1376 AliError(Form("Invalid parameter number: %d",i));
1377 } else
88cb7938 1378 (*fParameters)(15,i) = param ;
1379}
1380
1381//_____________________________________________________________________________
1382void AliPHOSPIDv1::SetParameterTimeGate(Int_t i, Float_t gate)
1383{
1384 // Set the parameter TimeGate depending on Purity-Efficiency point i
351dd634 1385 if (i>2 || i<0) {
1386 AliError(Form("Invalid Efficiency-Purity choice %d",i));
1387 } else
88cb7938 1388 (*fParameters)(3,i)= gate ;
1389}
1390
1391//_____________________________________________________________________________
1392void AliPHOSPIDv1::SetParameterToCalculateEllipse(TString particle, TString param, Int_t i, Float_t par)
1393{
1394 // Set the parameter "i" that is needed to calculate the ellipse
1395 // parameter "param" for a particle "particle"
1396
1397 particle.ToLower();
1398 param. ToLower();
1399 Int_t p= -1;
1400 Int_t offset=0;
1401
1402 if (particle == "photon") offset=0;
1403 else if (particle == "pi0") offset=5;
1404 else
351dd634 1405 AliError(Form("Wrong particle name: %s (choose from pi0/photon)\n",
1406 particle.Data()));
88cb7938 1407
1408 if (param.Contains("a")) p=4+offset;
1409 else if(param.Contains("b")) p=5+offset;
1410 else if(param.Contains("c")) p=6+offset;
1411 else if(param.Contains("x0"))p=7+offset;
1412 else if(param.Contains("y0"))p=8+offset;
351dd634 1413 if((i>4)||(i<0)) {
1414 AliError(Form("No parameter with index %d", i)) ;
1415 } else if(p==-1) {
1416 AliError(Form("No parameter with name %s", param.Data() )) ;
1417 } else
88cb7938 1418 (*fParameters)(p,i) = par ;
1419}
1420
1421//____________________________________________________________________________
1422void AliPHOSPIDv1::Unload()
1423{
c947e71a 1424 //Unloads RecPoints, Tracks and RecParticles
88cb7938 1425 AliPHOSGetter * gime = AliPHOSGetter::Instance() ;
1426 gime->PhosLoader()->UnloadRecPoints() ;
1427 gime->PhosLoader()->UnloadTracks() ;
1428 gime->PhosLoader()->UnloadRecParticles() ;
1429}
1430
1431//____________________________________________________________________________
90cceaf6 1432void AliPHOSPIDv1::WriteRecParticles()
88cb7938 1433{
c947e71a 1434 //It writes reconstructed particles and pid to file
1435
88cb7938 1436 AliPHOSGetter *gime = AliPHOSGetter::Instance() ;
1437
1438 TClonesArray * recParticles = gime->RecParticles() ;
1439 recParticles->Expand(recParticles->GetEntriesFast() ) ;
adcca1e6 1440 if(fWrite){
1441 TTree * treeP = gime->TreeP();
1442
1443 //First rp
1444 Int_t bufferSize = 32000 ;
1445 TBranch * rpBranch = treeP->Branch("PHOSRP",&recParticles,bufferSize);
1446 rpBranch->SetTitle(BranchName());
1447
1448 rpBranch->Fill() ;
1449
1450 gime->WriteRecParticles("OVERWRITE");
1451 gime->WritePID("OVERWRITE");
1452 }
88cb7938 1453}
1454
35adb638 1455
1456//_______________________________________________________________________
1457void AliPHOSPIDv1::SetInitPID(const Double_t *p) {
1458 // Sets values for the initial population of each particle type
1459 for (Int_t i=0; i<AliESDtrack::kSPECIESN; i++) fInitPID[i] = p[i];
1460}
1461//_______________________________________________________________________
1462void AliPHOSPIDv1::GetInitPID(Double_t *p) const {
1463 // Gets values for the initial population of each particle type
1464 for (Int_t i=0; i<AliESDtrack::kSPECIESN; i++) p[i] = fInitPID[i];
1465}