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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 | |
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16 | /* $Id$ */ |
17 | |
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18 | //_________________________________________________________________________ |
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19 | // Implementation version v1 of the PHOS particle identifier |
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20 | // Particle identification based on the |
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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) |
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34 | // |
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35 | // |
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36 | // use case: |
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37 | // root [0] AliPHOSPIDv1 * p = new AliPHOSPIDv1("galice1.root","v1") |
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38 | // Warning in <TDatabasePDG::TDatabasePDG>: object already instantiated |
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39 | // // reading headers from file galice1.root and create RecParticles with title v1 |
40 | // TrackSegments and RecPoints with title "v1" are used |
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41 | // // set file name for the branch RecParticles |
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42 | // root [1] p->ExecuteTask("deb all time") |
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43 | // // available options |
44 | // // "deb" - prints # of reconstructed particles |
45 | // // "deb all" - prints # and list of RecParticles |
46 | // // "time" - prints benchmarking results |
47 | // |
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48 | // root [2] AliPHOSPIDv1 * p2 = new AliPHOSPIDv1("galice1.root","v1","v0") |
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49 | // Warning in <TDatabasePDG::TDatabasePDG>: object already instantiated |
50 | // // reading headers from file galice1.root and create RecParticles with title v1 |
51 | // RecPoints and TrackSegments with title "v0" are used |
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52 | // root [3] p2->ExecuteTask() |
53 | // |
54 | // There are two possible principal files available to do the analysis. |
55 | // One for energy ranges from 0.5 to 5 GeV, the default one, and another |
56 | // one from 0.5 to 100 GeV. To do the analysis with one of this files, |
57 | // Use case |
58 | // root [0] AliPHOSPIDv1 p("galice.root") |
59 | // Warning in <TDatabasePDG::TDatabasePDG>: object already instantiated |
60 | // root [1] p.SetParameters("Wide energy range") (0.5-100 GeV) |
61 | // root [2] p.ExecuteTask("deb") |
62 | // or |
63 | // root [0] AliPHOSPIDv1 p("galice.root") |
64 | // Warning in <TDatabasePDG::TDatabasePDG>: object already instantiated |
65 | // root [1] p.SetParameters("Small energy range") (0.5-5 GeV) |
66 | // or |
67 | // p.SetParameters("Default") (0.5-5 GeV) |
68 | // root [2] p.ExecuteTask("deb") |
69 | |
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70 | //*-- Author: Yves Schutz (SUBATECH) & Gines Martinez (SUBATECH) & |
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71 | // Gustavo Conesa April 2002 |
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72 | |
73 | // --- ROOT system --- |
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74 | #include "TROOT.h" |
75 | #include "TTree.h" |
76 | #include "TFile.h" |
77 | #include "TF2.h" |
78 | #include "TFormula.h" |
79 | #include "TCanvas.h" |
80 | #include "TFolder.h" |
81 | #include "TSystem.h" |
82 | #include "TBenchmark.h" |
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83 | #include "TMatrixD.h" |
84 | #include "TPrincipal.h" |
85 | #include "TSystem.h" |
86 | |
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87 | // --- Standard library --- |
88 | |
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89 | #include <iostream.h> |
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90 | #include <fstream.h> |
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91 | #include <iomanip.h> |
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92 | |
93 | // --- AliRoot header files --- |
94 | |
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95 | #include "AliRun.h" |
96 | #include "AliGenerator.h" |
97 | #include "AliPHOS.h" |
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98 | #include "AliPHOSPIDv1.h" |
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99 | #include "AliPHOSClusterizerv1.h" |
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100 | #include "AliPHOSTrackSegment.h" |
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101 | #include "AliPHOSTrackSegmentMakerv1.h" |
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102 | #include "AliPHOSRecParticle.h" |
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103 | #include "AliPHOSGeometry.h" |
104 | #include "AliPHOSGetter.h" |
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105 | |
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106 | ClassImp( AliPHOSPIDv1) |
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107 | |
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108 | //____________________________________________________________________________ |
109 | AliPHOSPIDv1::AliPHOSPIDv1():AliPHOSPID() |
110 | { |
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111 | // default ctor |
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112 | |
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113 | InitParameters() ; |
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114 | } |
115 | |
116 | //____________________________________________________________________________ |
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117 | AliPHOSPIDv1::AliPHOSPIDv1(const char * headerFile,const char * name, const char * from) : AliPHOSPID(headerFile, name) |
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118 | |
119 | |
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120 | { |
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121 | //ctor with the indication on where to look for the track segments |
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122 | |
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123 | InitParameters() ; |
124 | |
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125 | if ( from == 0 ) |
126 | fFrom = name ; |
127 | else |
128 | fFrom = from ; |
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129 | |
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130 | Init() ; |
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131 | |
132 | } |
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133 | |
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134 | //____________________________________________________________________________ |
135 | AliPHOSPIDv1::~AliPHOSPIDv1() |
136 | { |
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137 | // dtor |
138 | // gime=0 if PID created by default ctor (to get just the parameters) |
139 | |
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140 | delete [] fX ; // Principal input |
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141 | delete [] fP ; // Principal components |
142 | delete fParameters ; // Matrix of Parameters |
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143 | |
144 | AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ; |
145 | |
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146 | if (gime) { |
147 | // remove the task from the folder list |
148 | gime->RemoveTask("P",GetName()) ; |
149 | TString name(GetName()) ; |
150 | name.ReplaceAll("pid", "clu") ; |
151 | gime->RemoveTask("C",name) ; |
152 | |
153 | // remove the data from the folder list |
154 | name = GetName() ; |
155 | name.Remove(name.Index(":")) ; |
156 | gime->RemoveObjects("RE", name) ; // EMCARecPoints |
157 | gime->RemoveObjects("RC", name) ; // CPVRecPoints |
158 | gime->RemoveObjects("T", name) ; // TrackSegments |
159 | gime->RemoveObjects("P", name) ; // RecParticles |
160 | |
161 | // Delete gAlice |
162 | gime->CloseFile() ; |
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163 | |
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164 | fSplitFile = 0 ; |
165 | } |
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166 | } |
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167 | |
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168 | //____________________________________________________________________________ |
169 | const TString AliPHOSPIDv1::BranchName() const |
170 | { |
171 | TString branchName(GetName() ) ; |
172 | branchName.Remove(branchName.Index(Version())-1) ; |
173 | return branchName ; |
174 | } |
175 | |
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176 | //____________________________________________________________________________ |
177 | void AliPHOSPIDv1::Init() |
178 | { |
179 | // Make all memory allocations that are not possible in default constructor |
180 | // Add the PID task to the list of PHOS tasks |
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181 | |
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182 | if ( strcmp(GetTitle(), "") == 0 ) |
183 | SetTitle("galice.root") ; |
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184 | |
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185 | AliPHOSGetter * gime = AliPHOSGetter::GetInstance(GetTitle(), fFrom.Data()) ; |
186 | |
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187 | gime->SetRecParticlesTitle(BranchName()) ; |
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188 | if ( gime == 0 ) { |
189 | cerr << "ERROR: AliPHOSPIDv1::Init -> Could not obtain the Getter object !" << endl ; |
190 | return ; |
191 | } |
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192 | |
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193 | gime->PostPID(this) ; |
194 | // create a folder on the white board //YSAlice/WhiteBoard/RecParticles/PHOS/recparticlesName |
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195 | gime->PostRecParticles(BranchName()) ; |
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196 | |
197 | } |
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198 | |
199 | //____________________________________________________________________________ |
200 | void AliPHOSPIDv1::InitParameters() |
201 | { |
202 | fFrom = "" ; |
203 | fHeaderFileName = GetTitle() ; |
204 | TString name(GetName()) ; |
205 | if (name.IsNull()) |
206 | name = "Default" ; |
207 | fTrackSegmentsTitle = name ; |
208 | fRecPointsTitle = name ; |
209 | fRecParticlesTitle = name ; |
210 | name.Append(":") ; |
211 | name.Append(Version()) ; |
212 | SetName(name) ; |
213 | fRecParticlesInRun = 0 ; |
214 | fOptFileName = "Default" ; |
215 | fNEvent = 0 ; |
216 | fClusterizer = 0 ; |
217 | fTSMaker = 0 ; |
218 | fRecParticlesInRun = 0 ; |
219 | SetParameters(fOptFileName) ; // fill the parameters matrix from parameters file |
220 | } |
221 | |
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222 | //____________________________________________________________________________ |
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223 | Double_t AliPHOSPIDv1::GetCpvtoEmcDistanceCut(const Float_t Cluster_En, const TString Eff_Pur)const |
224 | { |
225 | // Get CpvtoEmcDistanceCut parameter depending on the cluster energy and |
226 | // Purity-Efficiency point (possible options "HIGH EFFICIENCY" |
227 | // "MEDIUM EFFICIENCY" "LOW EFFICIENCY" and 3 more options changing |
228 | // EFFICIENCY by PURITY) |
229 | |
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230 | Int_t cluster = GetClusterOption(Cluster_En,kTRUE); |
231 | Int_t eff_pur = GetEffPurOption(Eff_Pur); |
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232 | |
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233 | if((cluster!= -1)||(eff_pur != -1)) |
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234 | return (*fParameters)(cluster,eff_pur) ; |
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235 | |
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236 | } |
237 | //____________________________________________________________________________ |
238 | |
239 | Double_t AliPHOSPIDv1::GetTimeGate(const Float_t Cluster_En, const TString Eff_Pur) const |
240 | { |
241 | // Get TimeGate parameter depending on the cluster energy and |
242 | // Purity-Efficiency point (possible options "HIGH EFFICIENCY" |
243 | // "MEDIUM EFFICIENCY" "LOW EFFICIENCY" and 3 more options changing |
244 | // EFFICIENCY by PURITY) |
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245 | |
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246 | Int_t cluster = GetClusterOption( Cluster_En,kFALSE); |
247 | Int_t eff_pur = GetEffPurOption(Eff_Pur); |
248 | |
249 | if((cluster!= -1)||(eff_pur != -1)) |
250 | return (*fParameters)(cluster+3+fCluster,eff_pur) ; |
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251 | |
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252 | } |
253 | //_____________________________________________________________________________ |
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254 | Float_t AliPHOSPIDv1::GetDistance(AliPHOSEmcRecPoint * emc,AliPHOSRecPoint * cpv, Option_t * Axis)const |
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255 | { |
256 | // Calculates the distance between the EMC RecPoint and the PPSD RecPoint |
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257 | |
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258 | const AliPHOSGeometry * geom = AliPHOSGetter::GetInstance()->PHOSGeometry() ; |
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259 | TVector3 vecEmc ; |
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260 | TVector3 vecCpv ; |
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261 | if(cpv){ |
262 | emc->GetLocalPosition(vecEmc) ; |
263 | cpv->GetLocalPosition(vecCpv) ; |
264 | if(emc->GetPHOSMod() == cpv->GetPHOSMod()){ |
265 | // Correct to difference in CPV and EMC position due to different distance to center. |
266 | // we assume, that particle moves from center |
267 | Float_t dCPV = geom->GetIPtoOuterCoverDistance(); |
268 | Float_t dEMC = geom->GetIPtoCrystalSurface() ; |
269 | dEMC = dEMC / dCPV ; |
270 | vecCpv = dEMC * vecCpv - vecEmc ; |
271 | if (Axis == "X") return vecCpv.X(); |
272 | if (Axis == "Y") return vecCpv.Y(); |
273 | if (Axis == "Z") return vecCpv.Z(); |
274 | if (Axis == "R") return vecCpv.Mag(); |
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275 | } |
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276 | |
277 | return 100000000 ; |
278 | } |
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279 | return 100000000 ; |
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280 | } |
281 | |
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282 | //____________________________________________________________________________ |
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283 | Int_t AliPHOSPIDv1::GetPrincipalSign(Double_t* P, Int_t cluster, Int_t eff_pur )const |
284 | { |
285 | //This method gives if the PCA of the particle are inside a defined ellipse |
286 | |
287 | // Get the parameters that define the ellipse stored in the |
288 | // fParameters matrix. |
289 | Double_t X_center = (*fParameters)(cluster+6,eff_pur) ; |
290 | Double_t Y_center = (*fParameters)(cluster+9,eff_pur) ; |
291 | Double_t A = (*fParameters)(cluster+12,eff_pur) ; |
292 | Double_t B = (*fParameters)(cluster+15,eff_pur) ; |
293 | Double_t Angle = (*fParameters)(cluster+18,eff_pur) ; |
294 | |
295 | Int_t prinsign; |
296 | Double_t Dx = 0. ; |
297 | Double_t Delta = 0. ; |
298 | Double_t Y = 0. ; |
299 | Double_t Y_1 = 0. ; |
300 | Double_t Y_2 = 0. ; |
301 | Double_t Pi = TMath::Pi() ; |
302 | Double_t Cos_Theta = TMath::Cos(Pi*Angle/180.) ; |
303 | Double_t Sin_Theta = TMath::Sin(Pi*Angle/180.) ; |
304 | |
305 | Dx = P[0] - X_center ; |
306 | Delta = 4.*A*A*A*B* (A*A*Cos_Theta*Cos_Theta |
307 | + B*B*Sin_Theta*Sin_Theta - Dx*Dx) ; |
308 | if (Delta < 0.) |
309 | {prinsign=0;} |
310 | |
311 | else if (Delta == 0.) |
312 | { |
313 | Y = Cos_Theta*Sin_Theta*(A*A - B*B)*Dx / |
314 | (A*A*Cos_Theta*Cos_Theta + B*B*Sin_Theta*Sin_Theta) ; |
315 | Y += Y_center ; |
316 | if(P[1]==Y ) |
317 | {prinsign=1;} |
318 | else |
319 | {prinsign=0;} |
320 | } |
321 | else |
322 | { |
323 | Y_1 = (Cos_Theta*Sin_Theta*(A*A - B*B) *Dx + |
324 | TMath::Sqrt(Delta)/2.)/(A*A*Cos_Theta*Cos_Theta + |
325 | B*B*Sin_Theta*Sin_Theta) ; |
326 | Y_2 = (Cos_Theta*Sin_Theta*(A*A - B*B) *Dx - |
327 | TMath::Sqrt(Delta)/2.)/(A*A*Cos_Theta*Cos_Theta |
328 | + B*B*Sin_Theta*Sin_Theta) ; |
329 | Y_1 += Y_center ; |
330 | Y_2 += Y_center ; |
331 | if ((P[1]<=Y_1) && (P[1]>=Y_2)) |
332 | {prinsign=1;} |
333 | else |
334 | {prinsign=0;} |
335 | } |
336 | return prinsign; |
337 | } |
338 | |
339 | //____________________________________________________________________________ |
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340 | void AliPHOSPIDv1::SetPrincipalFileOptions(TString OptFileName) { |
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341 | fOptFileName = OptFileName ; |
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342 | |
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343 | if(fOptFileName.Contains("Small energy range")||fOptFileName.Contains("Default")){ |
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344 | fFileName = "$ALICE_ROOT/PHOS/PCA8pa15_0.5-5.root" ; |
345 | fFileNamePar = gSystem->ExpandPathName("$ALICE_ROOT/PHOS/Parameters_0.5_5.dat"); |
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346 | fCluster = 0 ; |
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347 | } |
348 | |
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349 | else if(fOptFileName.Contains("Wide energy range")){ |
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350 | fFileName = "$ALICE_ROOT/PHOS/PCA8pa15_0.5-100.root" ; |
351 | fFileNamePar = gSystem->ExpandPathName("$ALICE_ROOT/PHOS/Parameters_0.5_100.dat"); |
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352 | fCluster = 3 ; |
353 | } |
354 | else{ |
355 | cout<<" Invalid energy range option "<<endl; |
356 | cout<<" Possible options : Default (0.5-5 GeV) "<<endl; |
357 | cout<<" Small energy range (0.5-5 GeV) "<<endl; |
358 | cout<<" Wide energy range (0.5-100 GeV) "<<endl; |
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359 | } |
360 | } |
361 | |
362 | //____________________________________________________________________________ |
363 | void AliPHOSPIDv1::SetEllipseParameters(Float_t Cluster_En, TString Eff_Pur, Float_t x, Float_t y,Float_t a, Float_t b,Float_t angle) |
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364 | { |
365 | |
366 | // Set all ellipse parameters depending on the cluster energy and |
367 | // Purity-Efficiency point (possible options "HIGH EFFICIENCY" |
368 | // "MEDIUM EFFICIENCY" "LOW EFFICIENCY" and 3 more options changing |
369 | // EFFICIENCY by PURITY) |
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370 | |
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371 | Int_t cluster = GetClusterOption( Cluster_En, kFALSE); |
372 | Int_t eff_pur = GetEffPurOption(Eff_Pur); |
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373 | |
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374 | if((cluster!= -1)||(eff_pur != -1)){ |
375 | (*fParameters)(cluster+6 +fCluster,eff_pur) = x ; |
376 | (*fParameters)(cluster+9 +fCluster,eff_pur) = y ; |
377 | (*fParameters)(cluster+12+fCluster,eff_pur) = a ; |
378 | (*fParameters)(cluster+15+fCluster,eff_pur) = b ; |
379 | (*fParameters)(cluster+18+fCluster,eff_pur) = angle ; |
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380 | } |
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381 | |
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382 | } |
383 | //__________________________________________________________________________ |
384 | void AliPHOSPIDv1::SetEllipseXCenter(Float_t Cluster_En, TString Eff_Pur, Float_t x) |
385 | { |
386 | // Set the ellipse parameter x_center depending on the custer energy and |
387 | // Purity-Efficiency point (possible options "HIGH EFFICIENCY" |
388 | // "MEDIUM EFFICIENCY" "LOW EFFICIENCY" and 3 more options changing |
389 | // EFFICIENCY by PURITY) |
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390 | |
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391 | Int_t cluster = GetClusterOption( Cluster_En, kFALSE); |
392 | Int_t eff_pur = GetEffPurOption(Eff_Pur); |
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393 | |
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394 | if((cluster!= -1)||(eff_pur != -1)) |
395 | (*fParameters)(cluster+6+fCluster,eff_pur) = x ; |
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396 | |
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397 | } |
398 | //_________________________________________________________________________ |
399 | void AliPHOSPIDv1::SetEllipseYCenter(Float_t Cluster_En, TString Eff_Pur, Float_t y) |
400 | { |
401 | |
402 | // Set the ellipse parameter y_center depending on the cluster energy and |
403 | // Purity-Efficiency point (possible options "HIGH EFFICIENCY" |
404 | // "MEDIUM EFFICIENCY" "LOW EFFICIENCY" and 3 more options changing |
405 | // EFFICIENCY by PURITY) |
406 | |
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407 | Int_t cluster = GetClusterOption( Cluster_En, kFALSE); |
408 | Int_t eff_pur = GetEffPurOption(Eff_Pur); |
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409 | |
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410 | if((cluster!= -1)||(eff_pur != -1)) |
411 | (*fParameters)(cluster+9+fCluster,eff_pur) = y ; |
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412 | |
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413 | } |
414 | //_________________________________________________________________________ |
415 | void AliPHOSPIDv1::SetEllipseAParameter(Float_t Cluster_En, TString Eff_Pur, Float_t a) |
416 | { |
417 | // Set the ellipse parameter a depending on the cluster energy and |
418 | // Purity-Efficiency point (possible options "HIGH EFFICIENCY" |
419 | // "MEDIUM EFFICIENCY" "LOW EFFICIENCY" and 3 more options changing |
420 | // EFFICIENCY by PURITY) |
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421 | |
422 | Int_t cluster = GetClusterOption(Cluster_En,kFALSE); |
423 | Int_t eff_pur = GetEffPurOption(Eff_Pur); |
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424 | |
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425 | if((cluster!= -1)||(eff_pur != -1)) |
426 | (*fParameters)(cluster+12+fCluster,eff_pur) = a ; |
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427 | |
148b2bba |
428 | } |
429 | //________________________________________________________________________ |
430 | void AliPHOSPIDv1::SetEllipseBParameter(Float_t Cluster_En, TString Eff_Pur, Float_t b) |
431 | { |
432 | // Set the ellipse parameter b depending on the cluster energy and |
433 | // Purity-Efficiency point (possible options "HIGH EFFICIENCY" |
434 | // "MEDIUM EFFICIENCY" "LOW EFFICIENCY" and 3 more options changing |
435 | // EFFICIENCY by PURITY) |
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436 | |
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437 | Int_t cluster = GetClusterOption(Cluster_En,kFALSE); |
438 | Int_t eff_pur = GetEffPurOption(Eff_Pur); |
439 | |
440 | if((cluster!= -1)||(eff_pur != -1)) |
441 | (*fParameters)(cluster+15+fCluster,eff_pur) = b ; |
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442 | |
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443 | } |
444 | //________________________________________________________________________ |
445 | void AliPHOSPIDv1::SetEllipseAngle(Float_t Cluster_En, TString Eff_Pur, Float_t angle) |
446 | { |
447 | |
448 | // Set the ellipse parameter angle depending on the cluster energy and |
449 | // Purity-Efficiency point (possible options "HIGH EFFICIENCY" |
450 | // "MEDIUM EFFICIENCY" "LOW EFFICIENCY" and 3 more options changing |
451 | // EFFICIENCY by PURITY) |
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452 | |
453 | Int_t cluster = GetClusterOption(Cluster_En,kFALSE) ; |
454 | Int_t eff_pur = GetEffPurOption(Eff_Pur); |
455 | |
456 | if((cluster!= -1)||(eff_pur != -1)) |
457 | (*fParameters)(cluster+18+fCluster,eff_pur) = angle ; |
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458 | |
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459 | } |
460 | //_____________________________________________________________________________ |
461 | void AliPHOSPIDv1::SetCpvtoEmcDistanceCut(Float_t Cluster_En, TString Eff_Pur, Float_t cut) |
462 | { |
463 | |
464 | // Set the parameter Cpvto EmcDistanceCut depending on the cluster energy and |
465 | // Purity-Efficiency point (possible options "HIGH EFFICIENCY" |
466 | // "MEDIUM EFFICIENCY" "LOW EFFICIENCY" and 3 more options changing |
467 | // EFFICIENCY by PURITY) |
468 | |
f0a4c9e9 |
469 | Int_t cluster = GetClusterOption(Cluster_En,kTRUE); |
470 | Int_t eff_pur = GetEffPurOption(Eff_Pur); |
148b2bba |
471 | |
f0a4c9e9 |
472 | if((cluster!= -1)||(eff_pur != -1)) |
148b2bba |
473 | (*fParameters)(cluster,eff_pur) = cut ; |
f0a4c9e9 |
474 | |
475 | } |
476 | //_____________________________________________________________________________ |
477 | void AliPHOSPIDv1::SetTimeGate(Float_t Cluster_En, TString Eff_Pur, Float_t gate) |
478 | { |
a496c46c |
479 | |
f0a4c9e9 |
480 | // Set the parameter TimeGate depending on the cluster energy and |
481 | // Purity-Efficiency point (possible options "HIGH EFFICIENCY" |
482 | // "MEDIUM EFFICIENCY" "LOW EFFICIENCY" and 3 more options changing |
483 | // EFFICIENCY by PURITY) |
484 | |
485 | Int_t cluster = GetClusterOption(Cluster_En,kFALSE); |
486 | Int_t eff_pur = GetEffPurOption(Eff_Pur); |
487 | |
488 | if((cluster!= -1)||(eff_pur != -1)) |
489 | (*fParameters)(cluster+3+fCluster,eff_pur) = gate ; |
490 | |
491 | } |
a496c46c |
492 | //_____________________________________________________________________________ |
f0a4c9e9 |
493 | void AliPHOSPIDv1::SetParameters(TString OptFileName) |
a496c46c |
494 | { |
495 | // PCA : To do the Principal Components Analysis it is necessary |
496 | // the Principal file, which is opened here |
497 | fX = new double[7]; // Data for the PCA |
f0a4c9e9 |
498 | fP = new double[7]; // Eigenvalues of the PCA |
e0ed2e49 |
499 | |
f0a4c9e9 |
500 | fOptFileName = OptFileName ; |
501 | |
e0ed2e49 |
502 | SetPrincipalFileOptions(fOptFileName); |
a496c46c |
503 | TFile f( fFileName.Data(), "read" ) ; |
f0a4c9e9 |
504 | //cout<<fFileName.Data()<<endl; |
a496c46c |
505 | fPrincipal = dynamic_cast<TPrincipal*> (f.Get("principal")) ; |
506 | f.Close() ; |
507 | |
508 | // Initialization of the Parameters matrix. In the File Parameters.dat |
f0a4c9e9 |
509 | // are all the parameters. These are introduced in a matrix of 21x3 or 24x3 |
510 | // elements (depending on the principal file 21 rows for 0.5-5 GeV and 24 |
511 | // rows for 0.5-100). |
a496c46c |
512 | // All the parameters defined in this file are, in order of row (there are |
f0a4c9e9 |
513 | // 3 rows per parameter): CpvtoEmcDistanceCut(if the principal file is 0.5-100 |
514 | // GeV than 6 rows), TimeGate (and the ellipse parameters), X_center, Y_center, |
515 | // a, b, angle. Each row of a given parameter depends on the cluster energy range |
516 | // (wich depends on the chosen principal file) |
a496c46c |
517 | // Each column designes the parameters for a point in the Efficiency-Purity |
f0a4c9e9 |
518 | // of the photon identification P1(96%,63%), P2(87%,0.88%) and P3(68%,94%) |
519 | // for the principal file from 0.5-5 GeV and for the other one P1(95%,79%), |
520 | // P2(89%,90%) and P3(72%,96%) |
521 | |
522 | Int_t rows = 21; |
523 | if(fCluster == 0)rows = 21 ; |
524 | if(fCluster == 3)rows = 24 ; |
a496c46c |
525 | |
f0a4c9e9 |
526 | fParameters = new TMatrixD(rows,3) ; |
527 | //cout<<fFileNamePar<<endl; |
a496c46c |
528 | ifstream paramFile(fFileNamePar, ios::in) ; |
529 | |
530 | Int_t i,j ; |
531 | |
f0a4c9e9 |
532 | for(i = 0; i< rows; i++){ |
a496c46c |
533 | for(j = 0; j< 3; j++){ |
534 | paramFile >> (*fParameters)(i,j) ; |
535 | } |
536 | } |
f0a4c9e9 |
537 | paramFile.close(); |
538 | // fParameters->Print(); |
a496c46c |
539 | } |
148b2bba |
540 | //_____________________________________________________________________________ |
f0a4c9e9 |
541 | Int_t AliPHOSPIDv1::GetClusterOption(const Float_t Cluster_En, const Bool_t rcpv) const |
148b2bba |
542 | { |
543 | |
f0a4c9e9 |
544 | // Gives the cluster energy range. |
545 | |
546 | Int_t cluster = -1 ; |
547 | |
548 | if((fCluster == 0)){ |
549 | if((Cluster_En > 0.3)&&(Cluster_En <= 1.0)) cluster = 0 ; |
550 | if((Cluster_En > 1.0)&&(Cluster_En <= 2.0)) cluster = 1 ; |
551 | if( Cluster_En > 2.0) cluster = 2 ; |
552 | } |
553 | else if(fCluster == 3 &&(rcpv == kFALSE)){ |
554 | if((Cluster_En > 0.5 )&&(Cluster_En <= 20.0)) cluster = 0 ; |
555 | if((Cluster_En > 20.0)&&(Cluster_En <= 50.0)) cluster = 1 ; |
556 | if( Cluster_En > 50.0) cluster = 2 ; |
557 | } |
558 | else if(fCluster == 3 &&(rcpv == kTRUE)){ |
559 | if((Cluster_En > 0.5 )&&(Cluster_En <= 2.0) ) cluster = 0 ; |
560 | if((Cluster_En > 2.0 )&&(Cluster_En <= 5.0) ) cluster = 1 ; |
561 | if((Cluster_En > 5.0 )&&(Cluster_En <= 10.0)) cluster = 2 ; |
562 | if((Cluster_En > 10.0)&&(Cluster_En <= 20.0)) cluster = 3 ; |
563 | if((Cluster_En > 20.0)&&(Cluster_En <= 30.0)) cluster = 4 ; |
564 | if( Cluster_En > 30.0) cluster = 5 ; |
565 | } |
566 | else { |
567 | cluster = -1 ; |
568 | cout<<"Invalid Energy option"<<endl; |
569 | } |
570 | |
571 | return cluster; |
572 | } |
573 | //____________________________________________________________________________ |
574 | Int_t AliPHOSPIDv1::GetEffPurOption(const TString Eff_Pur) const |
575 | { |
576 | |
577 | // Looks for the Purity-Efficiency point (possible options "HIGH EFFICIENCY" |
148b2bba |
578 | // "MEDIUM EFFICIENCY" "LOW EFFICIENCY" and 3 more options changing |
579 | // EFFICIENCY by PURITY) |
580 | |
148b2bba |
581 | Int_t eff_pur = -1 ; |
582 | |
f0a4c9e9 |
583 | if(Eff_Pur.Contains("HIGH EFFICIENCY") ||Eff_Pur.Contains("LOW PURITY") ) |
584 | eff_pur = 0 ; |
585 | else if(Eff_Pur.Contains("MEDIUM EFFICIENCY") ||Eff_Pur.Contains("MEDIUM PURITY") ) |
586 | eff_pur = 1 ; |
587 | else if(Eff_Pur.Contains("LOW EFFICIENCY")||Eff_Pur.Contains("HIGH PURITY") ) |
588 | eff_pur = 2 ; |
148b2bba |
589 | else{ |
f0a4c9e9 |
590 | eff_pur = -1; |
591 | cout<<"Invalid Efficiency-Purity option"<<endl; |
592 | cout<<"Possible options: HIGH EFFICIENCY = LOW PURITY"<<endl; |
593 | cout<<" MEDIUM EFFICIENCY = MEDIUM PURITY"<<endl; |
594 | cout<<" LOW EFFICIENCY = HIGH PURITY"<<endl; |
148b2bba |
595 | } |
f0a4c9e9 |
596 | |
597 | return eff_pur; |
598 | } |
148b2bba |
599 | //____________________________________________________________________________ |
600 | |
7acf6008 |
601 | void AliPHOSPIDv1::Exec(Option_t * option) |
6ad0bfa0 |
602 | { |
f035f6ce |
603 | //Steering method |
9688c1dd |
604 | |
bf8f1fbd |
605 | if( strcmp(GetName(), "")== 0 ) |
7acf6008 |
606 | Init() ; |
bf8f1fbd |
607 | |
608 | if(strstr(option,"tim")) |
7acf6008 |
609 | gBenchmark->Start("PHOSPID"); |
bf8f1fbd |
610 | |
611 | if(strstr(option,"print")) { |
7b7c1533 |
612 | Print("") ; |
613 | return ; |
bf8f1fbd |
614 | } |
9688c1dd |
615 | |
148b2bba |
616 | //cout << gDirectory->GetName() << endl ; |
617 | |
bf8f1fbd |
618 | gAlice->GetEvent(0) ; |
148b2bba |
619 | |
7b7c1533 |
620 | //check, if the branch with name of this" already exits? |
8d0f3f77 |
621 | if (gAlice->TreeR()) { |
622 | TObjArray * lob = (TObjArray*)gAlice->TreeR()->GetListOfBranches() ; |
623 | TIter next(lob) ; |
624 | TBranch * branch = 0 ; |
625 | Bool_t phospidfound = kFALSE, pidfound = kFALSE ; |
626 | |
627 | TString taskName(GetName()) ; |
628 | taskName.Remove(taskName.Index(Version())-1) ; |
629 | |
630 | while ( (branch = (TBranch*)next()) && (!phospidfound || !pidfound) ) { |
631 | if ( (strcmp(branch->GetName(), "PHOSPID")==0) && (strcmp(branch->GetTitle(), taskName.Data())==0) ) |
632 | phospidfound = kTRUE ; |
633 | |
634 | else if ( (strcmp(branch->GetName(), "AliPHOSPID")==0) && (strcmp(branch->GetTitle(), taskName.Data())==0) ) |
635 | pidfound = kTRUE ; |
636 | } |
7b7c1533 |
637 | |
8d0f3f77 |
638 | if ( phospidfound || pidfound ) { |
639 | cerr << "WARNING: AliPHOSPIDv1::Exec -> RecParticles and/or PIDtMaker branch with name " |
640 | << taskName.Data() << " already exits" << endl ; |
641 | return ; |
642 | } |
7b7c1533 |
643 | } |
9688c1dd |
644 | |
7b7c1533 |
645 | Int_t nevents = (Int_t) gAlice->TreeE()->GetEntries() ; |
646 | Int_t ievent ; |
148b2bba |
647 | AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ; |
7b7c1533 |
648 | for(ievent = 0; ievent < nevents; ievent++){ |
a496c46c |
649 | gime->Event(ievent,"R") ; |
148b2bba |
650 | |
7acf6008 |
651 | MakeRecParticles() ; |
9688c1dd |
652 | |
7b7c1533 |
653 | WriteRecParticles(ievent); |
9688c1dd |
654 | |
7acf6008 |
655 | if(strstr(option,"deb")) |
656 | PrintRecParticles(option) ; |
94de8339 |
657 | |
658 | //increment the total number of rec particles per run |
a496c46c |
659 | fRecParticlesInRun += gime->RecParticles(BranchName())->GetEntriesFast() ; |
94de8339 |
660 | |
7acf6008 |
661 | } |
9688c1dd |
662 | |
7acf6008 |
663 | if(strstr(option,"tim")){ |
664 | gBenchmark->Stop("PHOSPID"); |
665 | cout << "AliPHOSPID:" << endl ; |
666 | cout << " took " << gBenchmark->GetCpuTime("PHOSPID") << " seconds for PID " |
7b7c1533 |
667 | << gBenchmark->GetCpuTime("PHOSPID")/nevents << " seconds per event " << endl ; |
7acf6008 |
668 | cout << endl ; |
669 | } |
9688c1dd |
670 | |
7b7c1533 |
671 | } |
672 | |
7acf6008 |
673 | //____________________________________________________________________________ |
674 | void AliPHOSPIDv1::MakeRecParticles(){ |
675 | |
b2a60966 |
676 | // Makes a RecParticle out of a TrackSegment |
148b2bba |
677 | |
7b7c1533 |
678 | AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ; |
148b2bba |
679 | TObjArray * emcRecPoints = gime->EmcRecPoints(fFrom) ; |
680 | TObjArray * cpvRecPoints = gime->CpvRecPoints(fFrom) ; |
681 | TClonesArray * trackSegments = gime->TrackSegments(fFrom) ; |
682 | if ( !emcRecPoints || !cpvRecPoints || !trackSegments ) { |
683 | cerr << "ERROR: AliPHOSPIDv1::MakeRecParticles -> RecPoints or TrackSegments with name " |
684 | << fFrom << " not found ! " << endl ; |
685 | abort() ; |
686 | } |
a496c46c |
687 | TClonesArray * recParticles = gime->RecParticles(BranchName()) ; |
01a599c9 |
688 | recParticles->Clear(); |
148b2bba |
689 | |
690 | |
7b7c1533 |
691 | TIter next(trackSegments) ; |
7acf6008 |
692 | AliPHOSTrackSegment * ts ; |
6ad0bfa0 |
693 | Int_t index = 0 ; |
09fc14a0 |
694 | AliPHOSRecParticle * rp ; |
7acf6008 |
695 | |
7acf6008 |
696 | while ( (ts = (AliPHOSTrackSegment *)next()) ) { |
fad3e5b9 |
697 | |
7b7c1533 |
698 | new( (*recParticles)[index] ) AliPHOSRecParticle() ; |
699 | rp = (AliPHOSRecParticle *)recParticles->At(index) ; |
f0a4c9e9 |
700 | rp->SetTrackSegment(index) ; |
9688c1dd |
701 | rp->SetIndexInList(index) ; |
148b2bba |
702 | |
7acf6008 |
703 | AliPHOSEmcRecPoint * emc = 0 ; |
704 | if(ts->GetEmcIndex()>=0) |
7b7c1533 |
705 | emc = (AliPHOSEmcRecPoint *) emcRecPoints->At(ts->GetEmcIndex()) ; |
fad3e5b9 |
706 | |
7acf6008 |
707 | AliPHOSRecPoint * cpv = 0 ; |
708 | if(ts->GetCpvIndex()>=0) |
7b7c1533 |
709 | cpv = (AliPHOSRecPoint *) cpvRecPoints->At(ts->GetCpvIndex()) ; |
fad3e5b9 |
710 | |
7acf6008 |
711 | //set momentum and energy first |
712 | Float_t e = emc->GetEnergy() ; |
9688c1dd |
713 | TVector3 dir = GetMomentumDirection(emc,cpv) ; |
7acf6008 |
714 | dir.SetMag(e) ; |
715 | |
716 | rp->SetMomentum(dir.X(),dir.Y(),dir.Z(),e) ; |
717 | rp->SetCalcMass(0); |
fad3e5b9 |
718 | |
148b2bba |
719 | // Now set type (reconstructed) of the particle |
720 | |
721 | // Choose the cluster energy range |
f0a4c9e9 |
722 | // Ellipse and rcpv cut in function of the cluster energy |
723 | Int_t clusterrcpv = GetClusterOption(e,kTRUE) ; |
724 | Int_t cluster = GetClusterOption(e,kFALSE) ; |
725 | if((cluster== -1)||(clusterrcpv == -1)) continue ; |
148b2bba |
726 | |
727 | // Loop of Efficiency-Purity (the 3 points of purity or efficiency are taken |
728 | // into account to set the particle identification) |
729 | for(Int_t eff_pur = 0; eff_pur < 3 ; eff_pur++){ |
f0a4c9e9 |
730 | |
731 | // Looking at the CPV detector. If RCPV greater than CpvEmcDistance, 1st, |
732 | // 2nd or 3rd bit (depending on the efficiency-purity point )is set to 1 . |
733 | if(GetDistance(emc, cpv, "R") > (*fParameters)(clusterrcpv,eff_pur) ) |
148b2bba |
734 | rp->SetPIDBit(eff_pur) ; |
f0a4c9e9 |
735 | |
736 | // Looking the TOF. If TOF smaller than gate, 4th, 5th or 6th |
737 | // bit (depending on the efficiency-purity point )is set to 1 |
738 | if(emc->GetTime()< (*fParameters)(cluster+3+fCluster,eff_pur)) |
148b2bba |
739 | rp->SetPIDBit(eff_pur+3) ; |
740 | |
f0a4c9e9 |
741 | // Looking PCA. Define and calculate the data (X), introduce in the function |
742 | // X2P that gives the components (P). |
743 | Float_t Spher = 0. ; |
744 | Float_t Emaxdtotal = 0. ; |
745 | Float_t lambda[2] ; |
746 | |
747 | emc->GetElipsAxis(lambda) ; |
748 | if((lambda[0]+lambda[1])!=0) Spher=fabs(lambda[0]-lambda[1])/(lambda[0]+lambda[1]); |
749 | |
750 | Emaxdtotal=emc->GetMaximalEnergy()/emc->GetEnergy(); |
751 | |
752 | fX[0] = lambda[0] ; |
753 | fX[1] = lambda[1] ; |
754 | fX[2] = emc->GetDispersion() ; |
755 | fX[3] = Spher ; |
756 | fX[4] = emc->GetMultiplicity() ; |
757 | fX[5] = Emaxdtotal ; |
758 | fX[6] = emc->GetCoreEnergy() ; |
759 | |
760 | fPrincipal->X2P(fX,fP); |
761 | |
762 | //If we are inside the ellipse, 7th, 8th or 9th |
763 | // bit (depending on the efficiency-purity point )is set to 1 |
764 | if(GetPrincipalSign(fP,cluster+fCluster,eff_pur) == 1) |
765 | rp->SetPIDBit(eff_pur+6) ; |
766 | |
767 | } |
148b2bba |
768 | |
e0ed2e49 |
769 | rp->Name(); //If photon sets the particle pdg name to gamma |
e747b8da |
770 | rp->SetProductionVertex(0,0,0,0); |
771 | rp->SetFirstMother(-1); |
772 | rp->SetLastMother(-1); |
773 | rp->SetFirstDaughter(-1); |
774 | rp->SetLastDaughter(-1); |
775 | rp->SetPolarisation(0,0,0); |
6ad0bfa0 |
776 | index++ ; |
777 | } |
7acf6008 |
778 | |
6ad0bfa0 |
779 | } |
780 | |
09fc14a0 |
781 | //____________________________________________________________________________ |
a496c46c |
782 | void AliPHOSPIDv1:: Print() |
09fc14a0 |
783 | { |
b2a60966 |
784 | // Print the parameters used for the particle type identification |
f035f6ce |
785 | cout << "=============== AliPHOSPID1 ================" << endl ; |
786 | cout << "Making PID "<< endl ; |
787 | cout << " Headers file: " << fHeaderFileName.Data() << endl ; |
788 | cout << " RecPoints branch title: " << fRecPointsTitle.Data() << endl ; |
7b7c1533 |
789 | cout << " TrackSegments Branch title: " << fTrackSegmentsTitle.Data() << endl ; |
790 | cout << " RecParticles Branch title " << fRecParticlesTitle.Data() << endl; |
f0a4c9e9 |
791 | cout << " Pricipal analysis file " << fFileName.Data() << endl; |
e0ed2e49 |
792 | cout << " Matrix of Parameters: "<<endl; |
f0a4c9e9 |
793 | cout << " Name of parameters file "<<fFileNamePar.Data() << endl ; |
e0ed2e49 |
794 | cout << " 3 Columns [High Eff-Low Pur,Medium Eff-Pur, Low Eff-High Pur]"<<endl; |
f0a4c9e9 |
795 | if(fCluster == 0) |
796 | cout << " 21 Rows, each 3 [ RCPV, TOF, X_Center, Y_Center, A, B, Angle ]"<<endl; |
797 | if(fCluster == 3) |
798 | cout << " 24 Rows, [ 6 RCPV, 3 TOF, 3 X_Center, 3 Y_Center, 3 A, 3 B, 3 Angle ]"<<endl; |
799 | |
800 | //cout<<fOptFileName<<endl; |
801 | SetParameters(fOptFileName) ; |
a496c46c |
802 | fParameters->Print() ; |
f035f6ce |
803 | cout << "============================================" << endl ; |
09fc14a0 |
804 | } |
805 | |
7acf6008 |
806 | //____________________________________________________________________________ |
7b7c1533 |
807 | void AliPHOSPIDv1::WriteRecParticles(Int_t event) |
09fc14a0 |
808 | { |
7b7c1533 |
809 | |
810 | AliPHOSGetter *gime = AliPHOSGetter::GetInstance() ; |
a496c46c |
811 | |
812 | TClonesArray * recParticles = gime->RecParticles(BranchName()) ; |
bf8f1fbd |
813 | recParticles->Expand(recParticles->GetEntriesFast() ) ; |
8d0f3f77 |
814 | TTree * treeR = gAlice->TreeR() ; |
9688c1dd |
815 | |
8d0f3f77 |
816 | if (!treeR) |
817 | gAlice->MakeTree("R", fSplitFile); |
818 | treeR = gAlice->TreeR() ; |
7acf6008 |
819 | |
820 | //First rp |
821 | Int_t bufferSize = 32000 ; |
8d0f3f77 |
822 | TBranch * rpBranch = treeR->Branch("PHOSRP",&recParticles,bufferSize); |
bf8f1fbd |
823 | rpBranch->SetTitle(fRecParticlesTitle); |
8d0f3f77 |
824 | |
9688c1dd |
825 | |
7acf6008 |
826 | //second, pid |
827 | Int_t splitlevel = 0 ; |
828 | AliPHOSPIDv1 * pid = this ; |
8d0f3f77 |
829 | TBranch * pidBranch = treeR->Branch("AliPHOSPID","AliPHOSPIDv1",&pid,bufferSize,splitlevel); |
9688c1dd |
830 | pidBranch->SetTitle(fRecParticlesTitle.Data()); |
7acf6008 |
831 | |
761e34c0 |
832 | rpBranch->Fill() ; |
a496c46c |
833 | pidBranch->Fill() ; |
9688c1dd |
834 | |
8d0f3f77 |
835 | gAlice->TreeR()->AutoSave() ;// Write(0,kOverwrite) ; |
7b7c1533 |
836 | |
7acf6008 |
837 | } |
69183710 |
838 | |
7acf6008 |
839 | //____________________________________________________________________________ |
9688c1dd |
840 | TVector3 AliPHOSPIDv1::GetMomentumDirection(AliPHOSEmcRecPoint * emc, AliPHOSRecPoint * cpv)const |
7acf6008 |
841 | { |
842 | // Calculates the momentum direction: |
843 | // 1. if only a EMC RecPoint, direction is given by IP and this RecPoint |
9688c1dd |
844 | // 2. if a EMC RecPoint and CPV RecPoint, direction is given by the line through the 2 recpoints |
845 | // However because of the poor position resolution of PPSD the direction is always taken as if we were |
7acf6008 |
846 | // in case 1. |
847 | |
848 | TVector3 dir(0,0,0) ; |
849 | |
850 | TVector3 emcglobalpos ; |
851 | TMatrix dummy ; |
852 | |
853 | emc->GetGlobalPosition(emcglobalpos, dummy) ; |
854 | |
148b2bba |
855 | |
7acf6008 |
856 | dir = emcglobalpos ; |
857 | dir.SetZ( -dir.Z() ) ; // why ? |
858 | dir.SetMag(1.) ; |
859 | |
860 | //account correction to the position of IP |
861 | Float_t xo,yo,zo ; //Coordinates of the origin |
862 | gAlice->Generator()->GetOrigin(xo,yo,zo) ; |
863 | TVector3 origin(xo,yo,zo); |
864 | dir = dir - origin ; |
865 | |
866 | return dir ; |
867 | } |
868 | //____________________________________________________________________________ |
a4e98857 |
869 | void AliPHOSPIDv1::PrintRecParticles(Option_t * option) |
870 | { |
dd5c4038 |
871 | // Print table of reconstructed particles |
872 | |
7b7c1533 |
873 | AliPHOSGetter *gime = AliPHOSGetter::GetInstance() ; |
bf8f1fbd |
874 | |
a496c46c |
875 | TClonesArray * recParticles = gime->RecParticles(BranchName()) ; |
9688c1dd |
876 | |
01a599c9 |
877 | cout << "AliPHOSPIDv1: event "<<gAlice->GetEvNumber() << endl ; |
7b7c1533 |
878 | cout << " found " << recParticles->GetEntriesFast() << " RecParticles " << endl ; |
9688c1dd |
879 | |
7acf6008 |
880 | if(strstr(option,"all")) { // printing found TS |
881 | |
e0ed2e49 |
882 | cout << " PARTICLE " |
7acf6008 |
883 | << " Index " << endl ; |
7acf6008 |
884 | |
885 | Int_t index ; |
7b7c1533 |
886 | for (index = 0 ; index < recParticles->GetEntries() ; index++) { |
148b2bba |
887 | AliPHOSRecParticle * rp = (AliPHOSRecParticle * ) recParticles->At(index) ; |
e0ed2e49 |
888 | |
889 | cout << setw(10) << rp->Name() << " " |
890 | << setw(5) << rp->GetIndexInList() << " " <<endl; |
891 | cout << "Type "<< rp->GetType() << endl; |
7acf6008 |
892 | } |
893 | cout << "-------------------------------------------" << endl ; |
894 | } |
895 | |
69183710 |
896 | } |
897 | |
7acf6008 |
898 | |
899 | |