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6ad0bfa0 | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
3 | * * | |
4 | * Author: The ALICE Off-line Project. * | |
5 | * Contributors are mentioned in the code where appropriate. * | |
6 | * * | |
7 | * Permission to use, copy, modify and distribute this software and its * | |
8 | * documentation strictly for non-commercial purposes is hereby granted * | |
9 | * without fee, provided that the above copyright notice appears in all * | |
10 | * copies and that both the copyright notice and this permission notice * | |
11 | * appear in the supporting documentation. The authors make no claims * | |
12 | * about the suitability of this software for any purpose. It is * | |
13 | * provided "as is" without express or implied warranty. * | |
14 | **************************************************************************/ | |
b2a60966 | 15 | /* $Id$ */ |
6ad0bfa0 | 16 | //_________________________________________________________________________ |
b2a60966 | 17 | // A Reconstructed Particle in PHOS |
2f04ed65 | 18 | // To become a general class of AliRoot ? |
19 | // Why should I put meaningless comments | |
20 | // just to satisfy | |
21 | // the code checker | |
b2a60966 | 22 | // |
23 | //*-- Author: Yves Schutz (SUBATECH) | |
24 | ||
6ad0bfa0 | 25 | |
26 | // --- ROOT system --- | |
27 | ||
28 | // --- Standard library --- | |
29 | ||
ed4205d8 | 30 | |
6ad0bfa0 | 31 | // --- AliRoot header files --- |
6ad0bfa0 | 32 | #include "AliPHOSRecParticle.h" |
8f3968d8 | 33 | #include "AliPHOSGetter.h" |
c81ced2d | 34 | #include "AliPHOSGeometry.h" |
6ad0bfa0 | 35 | |
0272607d | 36 | //____________________________________________________________________________ |
37 | AliPHOSRecParticle::AliPHOSRecParticle(): fPHOSTrackSegment(0) , fDebug( kFALSE ) | |
38 | { | |
39 | // ctor | |
88340ded | 40 | const Int_t nSPECIES = AliESDtrack::kSPECIESN; |
41 | for(Int_t i = 0; i<nSPECIES ; i++) | |
0272607d | 42 | fPID[i]=0.; |
43 | } | |
6ad0bfa0 | 44 | |
45 | ||
a73f33f0 | 46 | //____________________________________________________________________________ |
47 | AliPHOSRecParticle::AliPHOSRecParticle(const AliPHOSRecParticle & rp) | |
a8c47ab6 | 48 | : AliPHOSFastRecParticle(rp) |
a73f33f0 | 49 | { |
b2a60966 | 50 | // copy ctor |
51 | ||
83974468 | 52 | fPHOSTrackSegment = rp.fPHOSTrackSegment ; |
51d189f4 | 53 | fDebug = kFALSE ; |
a73f33f0 | 54 | fType = rp.fType ; |
83974468 | 55 | fIndexInList = rp.fIndexInList ; |
b2a60966 | 56 | |
cafda784 | 57 | fPdgCode = rp.fPdgCode; |
58 | fStatusCode = rp.fStatusCode; | |
59 | fMother[0] = rp.fMother[0]; | |
60 | fMother[1] = rp.fMother[1]; | |
61 | fDaughter[0] = rp.fDaughter[0]; | |
62 | fDaughter[1] = rp.fDaughter[1]; | |
63 | fWeight = rp.fWeight; | |
64 | fCalcMass = rp.fCalcMass; | |
65 | fPx = rp.fPx; | |
66 | fPy = rp.fPy; | |
67 | fPz = rp.fPz; | |
68 | fE = rp.fE; | |
69 | fVx = rp.fVx; | |
70 | fVy = rp.fVy; | |
71 | fVz = rp.fVz; | |
72 | fVt = rp.fVt; | |
73 | fPolarTheta = rp.fPolarTheta; | |
74 | fPolarPhi = rp.fPolarPhi; | |
75 | fParticlePDG = rp.fParticlePDG; | |
88340ded | 76 | const Int_t nSPECIES = AliESDtrack::kSPECIESN; |
77 | for(Int_t i = 0; i<nSPECIES ; i++) | |
0272607d | 78 | fPID[i]=rp.fPID[i]; |
b2a60966 | 79 | } |
83974468 | 80 | |
8f3968d8 | 81 | //____________________________________________________________________________ |
82 | const Int_t AliPHOSRecParticle::GetNPrimaries() const | |
88cb7938 | 83 | { |
84 | return -1; | |
a278df55 | 85 | } |
86 | ||
87 | //____________________________________________________________________________ | |
88 | const Int_t AliPHOSRecParticle::GetNPrimariesToRecParticles() const | |
8f3968d8 | 89 | { |
e957fea8 | 90 | // Get the number of primaries at the origine of the RecParticle |
8f3968d8 | 91 | Int_t rv = 0 ; |
88cb7938 | 92 | AliPHOSGetter * gime = AliPHOSGetter::Instance() ; |
93 | Int_t emcRPindex = dynamic_cast<AliPHOSTrackSegment*>(gime->TrackSegments()->At(GetPHOSTSIndex()))->GetEmcIndex(); | |
94 | dynamic_cast<AliPHOSEmcRecPoint*>(gime->EmcRecPoints()->At(emcRPindex))->GetPrimaries(rv) ; | |
8f3968d8 | 95 | return rv ; |
96 | } | |
83974468 | 97 | |
c81ced2d | 98 | //____________________________________________________________________________ |
99 | const TParticle * AliPHOSRecParticle::GetPrimary() const | |
100 | { | |
101 | // Get the primary particle at the origine of the RecParticle and | |
102 | // which has deposited the largest energy in SDigits | |
103 | AliPHOSGetter * gime = AliPHOSGetter::Instance() ; | |
104 | if (!gime) | |
105 | Error("GetPrimary", "Getter not yet instantiated") ; | |
106 | gime->Event(gime->EventNumber(), "SRTPX") ; | |
107 | if(GetNPrimaries() == 0) | |
108 | return 0 ; | |
109 | if(GetNPrimaries() == 1) | |
110 | return GetPrimary(0) ; | |
111 | Int_t AbsId = 0; | |
112 | Int_t module ; | |
113 | const AliPHOSGeometry * geom = gime->PHOSGeometry() ; | |
114 | Double_t x,z ; | |
115 | geom->ImpactOnEmc(static_cast<double>(Theta()),static_cast<double>(Phi()), module,z,x); | |
116 | Int_t amp = 0 ; | |
117 | Int_t iPrim=-1 ; | |
118 | if(module != 0){ | |
119 | geom->RelPosToAbsId(module,x,z,AbsId) ; | |
120 | TClonesArray * sdigits = gime->SDigits() ; | |
121 | AliPHOSDigit * sdig ; | |
122 | ||
123 | for(Int_t i = 0 ; i < sdigits->GetEntriesFast() ; i++){ | |
124 | sdig = static_cast<AliPHOSDigit *>(sdigits->At(i)) ; | |
125 | if((sdig->GetId() == AbsId)){ | |
126 | if((sdig->GetAmp() > amp) && (sdig->GetNprimary())){ | |
127 | amp = sdig->GetAmp() ; | |
128 | iPrim = sdig->GetPrimary(1) ; | |
129 | } | |
130 | // do not scan rest of list | |
131 | if(sdig->GetId() > AbsId) | |
132 | continue ; | |
133 | } | |
134 | } | |
135 | } | |
136 | if(iPrim >= 0) | |
137 | return gime->Primary(iPrim) ; | |
138 | else | |
139 | return 0 ; | |
140 | } | |
141 | ||
8f3968d8 | 142 | //____________________________________________________________________________ |
143 | const TParticle * AliPHOSRecParticle::GetPrimary(Int_t index) const | |
144 | { | |
c81ced2d | 145 | // Get one of the primary particles at the origine of the RecParticle |
a278df55 | 146 | if ( index > GetNPrimariesToRecParticles() ) { |
51d189f4 | 147 | if (fDebug) |
88cb7938 | 148 | Warning("GetPrimary", "AliPHOSRecParticle::GetPrimary -> %d is larger that the number of primaries %d", |
149 | index, GetNPrimaries()) ; | |
150 | return 0 ; | |
51d189f4 | 151 | } |
88cb7938 | 152 | else { |
153 | Int_t dummy ; | |
154 | AliPHOSGetter * gime = AliPHOSGetter::Instance() ; | |
155 | ||
156 | Int_t emcRPindex = dynamic_cast<AliPHOSTrackSegment*>(gime->TrackSegments()->At(GetPHOSTSIndex()))->GetEmcIndex(); | |
157 | Int_t primaryindex = dynamic_cast<AliPHOSEmcRecPoint*>(gime->EmcRecPoints()->At(emcRPindex))->GetPrimaries(dummy)[index] ; | |
158 | return gime->Primary(primaryindex) ; | |
159 | } | |
fc7e2f43 | 160 | // return 0 ; |
8f3968d8 | 161 | } |
948a4b24 | 162 | |
06e774ed | 163 | //____________________________________________________________________________ |
cc1fe362 | 164 | void AliPHOSRecParticle::SetPID(Int_t type, Double_t weight) |
06e774ed | 165 | { |
cc1fe362 | 166 | // Set the probability densities that this reconstructed particle |
06e774ed | 167 | // has a type of i: |
168 | // i particle types | |
169 | // ---------------------- | |
170 | // 0 electron | |
171 | // 1 muon | |
172 | // 2 pi+- | |
173 | // 3 K+- | |
174 | // 4 p/pbar | |
175 | // 5 photon | |
176 | // 6 pi0 at high pt | |
177 | // 7 neutron | |
178 | // 8 K0L | |
cc1fe362 | 179 | // 9 Conversion electron |
180 | ||
181 | fPID[type] = weight ; | |
06e774ed | 182 | } |