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70da6c5a | 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 | // | |
16 | // Toolkit containing various usefull things | |
17 | // Usable everywhere in the hfe software package | |
18 | // For more information see the cxx file | |
19 | // | |
20 | // Authors | |
21 | // All authors of the HFE group | |
22 | // | |
23 | #include <TMath.h> | |
24 | #include <TParticle.h> | |
25 | #include "TH1.h" | |
26 | #include "TH2.h" | |
27 | #include "THnSparse.h" | |
28 | #include "TAxis.h" | |
29 | ||
30 | #include "AliAODMCParticle.h" | |
3a72645a | 31 | #include "AliAODpidUtil.h" |
faee3b18 | 32 | #include "AliESDpid.h" |
70da6c5a | 33 | #include "AliLog.h" |
3a72645a | 34 | #include "AliTPCPIDResponse.h" |
faee3b18 | 35 | #include "AliTOFPIDResponse.h" |
70da6c5a | 36 | |
37 | #include "AliHFEtools.h" | |
38 | ||
39 | ClassImp(AliHFEtools) | |
40 | ||
faee3b18 | 41 | AliESDpid *AliHFEtools::fgDefaultPID = NULL; |
3a72645a | 42 | AliAODpidUtil *AliHFEtools::fgDefaultPIDaod = NULL; |
69ac0e6f | 43 | Int_t AliHFEtools::fgLogLevel = 0; |
faee3b18 | 44 | |
70da6c5a | 45 | //__________________________________________ |
46 | AliHFEtools::AliHFEtools(): | |
47 | TObject() | |
48 | { | |
49 | } | |
50 | ||
51 | //__________________________________________ | |
52 | Double_t *AliHFEtools::MakeLinearBinning(Int_t nBins, Double_t ymin, Double_t ymax){ | |
53 | // | |
54 | // Helper function for linearly binned array | |
55 | // | |
56 | Double_t *bins = new Double_t[nBins + 1]; | |
57 | Double_t stepsize = (ymax - ymin) / static_cast<Double_t>(nBins); | |
58 | bins[0] = ymin; | |
59 | for(Int_t ibin = 1; ibin <= nBins; ibin++) | |
60 | bins[ibin] = bins[ibin-1] + stepsize; | |
61 | return bins; | |
62 | } | |
63 | ||
64 | //__________________________________________ | |
65 | Double_t *AliHFEtools::MakeLogarithmicBinning(Int_t nBins, Double_t ymin, Double_t ymax){ | |
66 | // | |
67 | // Helper function for logartimically binned array | |
68 | // | |
69 | Double_t *bins = new Double_t[nBins+1]; | |
70 | bins[0] = ymin; | |
71 | Double_t factor = TMath::Power(ymax/ymin, 1./nBins); | |
72 | for(Int_t ibin = 1; ibin <= nBins; ibin++){ | |
73 | bins[ibin] = factor * bins[ibin-1]; | |
74 | } | |
75 | return bins; | |
76 | } | |
77 | ||
78 | //_________________________________________ | |
79 | Bool_t AliHFEtools::BinLogAxis(TObject *o, Int_t dim){ | |
80 | ||
81 | // | |
82 | // converts the axis (defined by the dimension) of THx or THnSparse | |
83 | // object to Log scale. Number of bins and bin min and bin max are preserved | |
84 | // | |
85 | ||
86 | ||
87 | if(!o){ | |
88 | AliError("Input histogram is null pointer"); | |
89 | return kFALSE; | |
90 | } | |
91 | ||
92 | TAxis *axis = 0x0; | |
93 | if(o->InheritsFrom("TH1")){ | |
bf892a6a | 94 | TH1 *h1 = dynamic_cast<TH1F*>(o); |
95 | if(h1) axis = h1->GetXaxis(); | |
70da6c5a | 96 | } |
97 | else if(o->InheritsFrom("TH2")){ | |
bf892a6a | 98 | TH2 *h2 = dynamic_cast<TH2F*>(o); |
99 | if(h2 && 0 == dim){ | |
100 | axis = h2->GetXaxis(); | |
70da6c5a | 101 | } |
bf892a6a | 102 | else if(h2 && 1 == dim){ |
103 | axis = h2->GetYaxis(); | |
70da6c5a | 104 | } |
105 | else{ | |
106 | AliError("Only dim = 0 or 1 possible for TH2F"); | |
107 | } | |
108 | } | |
109 | else if(o->InheritsFrom("THnSparse")){ | |
bf892a6a | 110 | THnSparse *hs = dynamic_cast<THnSparse*>(o); |
111 | if(hs) axis = hs->GetAxis(dim); | |
70da6c5a | 112 | } |
113 | else{ | |
114 | AliError("Type of input object not recognized, please check your code or update this finction"); | |
115 | return kFALSE; | |
116 | } | |
117 | if(!axis){ | |
118 | AliError(Form("Axis '%d' could not be identified in the object \n", dim)); | |
119 | return kFALSE; | |
120 | } | |
121 | ||
122 | Int_t bins = axis->GetNbins(); | |
123 | ||
124 | Double_t from = axis->GetXmin(); | |
125 | if(from <= 0){ | |
126 | AliError(Form("Log binning not possible for this axis [min = %f]\n", from)); | |
127 | } | |
128 | Double_t to = axis->GetXmax(); | |
129 | Double_t *newBins = new Double_t[bins+1]; | |
130 | newBins[0] = from; | |
131 | Double_t factor = TMath::Power(to/from, 1./bins); | |
132 | for(Int_t i=1; i<=bins; ++i){ | |
133 | newBins[i] = factor * newBins[i-1]; | |
134 | } | |
135 | axis->Set(bins, newBins); | |
bf892a6a | 136 | delete[] newBins; |
70da6c5a | 137 | |
138 | return kTRUE; | |
139 | } | |
140 | ||
141 | //__________________________________________ | |
3a72645a | 142 | Float_t AliHFEtools::GetRapidity(const TParticle *part){ |
70da6c5a | 143 | // |
144 | // return rapidity | |
145 | // | |
146 | Float_t rapidity; | |
147 | if(!((part->Energy() - part->Pz())*(part->Energy() + part->Pz())>0)) rapidity=-999; | |
148 | else rapidity = 0.5*(TMath::Log((part->Energy()+part->Pz()) / (part->Energy()-part->Pz()))); | |
149 | return rapidity; | |
150 | } | |
151 | ||
152 | //__________________________________________ | |
3a72645a | 153 | Float_t AliHFEtools::GetRapidity(const AliAODMCParticle *part){ |
70da6c5a | 154 | // return rapidity |
155 | ||
156 | Float_t rapidity; | |
157 | if(!((part->E() - part->Pz())*(part->E() + part->Pz())>0)) rapidity=-999; | |
158 | else rapidity = 0.5*(TMath::Log((part->E()+part->Pz()) / (part->E()-part->Pz()))); | |
159 | return rapidity; | |
160 | } | |
161 | ||
faee3b18 | 162 | //__________________________________________ |
163 | AliESDpid* AliHFEtools::GetDefaultPID(Bool_t isMC){ | |
164 | // | |
165 | // Get the default PID as singleton instance | |
166 | // | |
167 | if(!fgDefaultPID){ | |
168 | fgDefaultPID = new AliESDpid; | |
169 | Double_t tres = isMC ? 80. : 130.; | |
170 | fgDefaultPID->GetTOFResponse().SetTimeResolution(tres); | |
171 | ||
172 | // TPC Bethe Bloch parameters | |
173 | Double_t alephParameters[5]; | |
174 | if(isMC){ | |
175 | // simulation | |
176 | alephParameters[0] = 2.15898e+00/50.; | |
177 | alephParameters[1] = 1.75295e+01; | |
178 | alephParameters[2] = 3.40030e-09; | |
179 | alephParameters[3] = 1.96178e+00; | |
180 | alephParameters[4] = 3.91720e+00; | |
181 | } else { | |
182 | alephParameters[0] = 0.0283086/0.97; | |
183 | //alephParameters[0] = 0.0283086; | |
184 | alephParameters[1] = 2.63394e+01; | |
185 | alephParameters[2] = 5.04114e-11; | |
186 | alephParameters[3] = 2.12543e+00; | |
187 | alephParameters[4] = 4.88663e+00; | |
188 | } | |
189 | fgDefaultPID->GetTPCResponse().SetBetheBlochParameters(alephParameters[0],alephParameters[1],alephParameters[2], alephParameters[3],alephParameters[4]); | |
67fe7bd0 | 190 | fgDefaultPID->GetTPCResponse().SetSigma(3.79301e-03, 2.21280e+04); |
faee3b18 | 191 | |
192 | } | |
193 | if(fgLogLevel){ | |
67fe7bd0 | 194 | printf("Error - You are using the default PID: You should use the PID coming from the tender\n"); |
195 | printf("Error - Arrrrrrrrr...\n"); | |
196 | printf("Error - Please rethink your program logic. Using default PID is really dangerous\n"); | |
197 | printf("Error - TOF PID is adapted to Monte Carlo\n"); | |
faee3b18 | 198 | } |
199 | return fgDefaultPID; | |
200 | } | |
201 | ||
3a72645a | 202 | //__________________________________________ |
203 | AliAODpidUtil* AliHFEtools::GetDefaultAODPID(Bool_t isMC){ | |
204 | // | |
205 | // Get the default PID as singleton instance | |
206 | // | |
207 | if(!fgDefaultPID){ | |
208 | fgDefaultPIDaod = new AliAODpidUtil; | |
209 | Double_t tres = isMC ? 80. : 130.; | |
210 | fgDefaultPIDaod->GetTOFResponse().SetTimeResolution(tres); | |
211 | ||
212 | // TPC Bethe Bloch parameters | |
213 | Double_t alephParameters[5]; | |
214 | if(isMC){ | |
215 | // simulation | |
216 | alephParameters[0] = 2.15898e+00/50.; | |
217 | alephParameters[1] = 1.75295e+01; | |
218 | alephParameters[2] = 3.40030e-09; | |
219 | alephParameters[3] = 1.96178e+00; | |
220 | alephParameters[4] = 3.91720e+00; | |
221 | } else { | |
222 | alephParameters[0] = 0.0283086/0.97; | |
223 | //alephParameters[0] = 0.0283086; | |
224 | alephParameters[1] = 2.63394e+01; | |
225 | alephParameters[2] = 5.04114e-11; | |
226 | alephParameters[3] = 2.12543e+00; | |
227 | alephParameters[4] = 4.88663e+00; | |
228 | } | |
229 | fgDefaultPIDaod->GetTPCResponse().SetBetheBlochParameters(alephParameters[0],alephParameters[1],alephParameters[2], alephParameters[3],alephParameters[4]); | |
230 | fgDefaultPIDaod->GetTPCResponse().SetSigma(3.79301e-03, 2.21280e+04); | |
231 | } | |
232 | if(fgLogLevel){ | |
233 | printf("Error - You are using the default PID: You should use the PID coming from the tender\n"); | |
234 | printf("Error - Arrrrrrrrr...\n"); | |
235 | printf("Error - Please rethink your program logic. Using default PID is really dangerous\n"); | |
236 | printf("Error - TOF PID is adapted to Monte Carlo\n"); | |
237 | } | |
238 | return fgDefaultPIDaod; | |
239 | } | |
240 | ||
faee3b18 | 241 | //__________________________________________ |
242 | void AliHFEtools::DestroyDefaultPID(){ | |
243 | // | |
244 | // Destroy default PID object if existing | |
245 | // | |
246 | if(fgDefaultPID) delete fgDefaultPID; | |
247 | fgDefaultPID = NULL; | |
3a72645a | 248 | if(fgDefaultPIDaod) delete fgDefaultPIDaod; |
249 | fgDefaultPIDaod = NULL; | |
250 | } | |
251 | ||
252 | //__________________________________________ | |
253 | Int_t AliHFEtools::GetPdg(const AliVParticle *track){ | |
254 | // | |
255 | // Get MC PDG code (only MC particles supported) | |
256 | // | |
257 | Int_t pdg = 0; | |
258 | if(!TString(track->IsA()->GetName()).CompareTo("AliMCParticle")){ | |
259 | const AliMCParticle *mctrack = dynamic_cast<const AliMCParticle *>(track); | |
e3ae862b | 260 | pdg = mctrack ? mctrack->Particle()->GetPdgCode() : 0; |
3a72645a | 261 | } else if(!TString(track->IsA()->GetName()).CompareTo("AliAODMCParticle")){ |
262 | const AliAODMCParticle *aodmctrack = dynamic_cast<const AliAODMCParticle *>(track); | |
e3ae862b | 263 | pdg = aodmctrack ? aodmctrack->GetPdgCode() : 0; |
3a72645a | 264 | } |
265 | return pdg; | |
266 | } | |
267 | ||
268 | //__________________________________________ | |
269 | Int_t AliHFEtools::PDG2AliPID(Int_t pdg){ | |
270 | // | |
271 | // Helper function to convert MC PID codes into AliPID codes | |
272 | // | |
273 | Int_t pid = -1; | |
274 | switch(TMath::Abs(pdg)){ | |
275 | case 11: pid = AliPID::kElectron; break; | |
276 | case 13: pid = AliPID::kMuon; break; | |
277 | case 211: pid = AliPID::kPion; break; | |
278 | case 321: pid = AliPID::kKaon; break; | |
279 | case 2212: pid = AliPID::kProton; break; | |
280 | default: pid = -1; break; | |
281 | }; | |
282 | return pid; | |
faee3b18 | 283 | } |