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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 | ||
16 | /* $Id$ */ | |
17 | ||
18 | //_________________________________________________________________________ | |
19 | //*-- Implementation version v1 of EMCAL Manager class | |
20 | //*-- An object of this class does not produce digits | |
21 | //*-- It is the one to use if you do want to produce outputs in TREEH | |
22 | //*-- | |
23 | //*-- Author: Sahal Yacoob (LBL /UCT) | |
24 | //*-- : Jennifer Klay (LBL) | |
25 | // This Class not stores information on all particles prior to EMCAL entry - in order to facilitate analysis. | |
26 | // This is done by setting fIShunt =2, and flagging all parents of particles entering the EMCAL. | |
27 | ||
28 | // 15/02/2002 .... Yves Schutz | |
29 | // 1. fSamplingFraction and fLayerToPreshowerRatio have been removed | |
30 | // 2. Timing signal is collected and added to hit | |
31 | ||
32 | // --- ROOT system --- | |
33 | #include <TParticle.h> | |
34 | #include <TVirtualMC.h> | |
35 | ||
36 | // --- Standard library --- | |
37 | ||
38 | // --- AliRoot header files --- | |
39 | #include "AliEMCALv1.h" | |
40 | #include "AliEMCALHit.h" | |
41 | #include "AliEMCALGeometry.h" | |
42 | #include "AliRun.h" | |
43 | #include "AliMC.h" | |
44 | ||
45 | ClassImp(AliEMCALv1) | |
46 | ||
47 | ||
48 | //______________________________________________________________________ | |
49 | AliEMCALv1::AliEMCALv1():AliEMCALv0(), fCurPrimary(-1), fCurParent(-1), fCurTrack(-1){ | |
50 | // ctor | |
51 | } | |
52 | ||
53 | //______________________________________________________________________ | |
54 | AliEMCALv1::AliEMCALv1(const char *name, const char *title): | |
55 | AliEMCALv0(name,title), fCurPrimary(-1), fCurParent(-1), fCurTrack(-1) { | |
56 | // Standard Creator. | |
57 | ||
58 | fHits= new TClonesArray("AliEMCALHit",1000); | |
59 | // gAlice->GetMCApp()->AddHitList(fHits); // 20-dec-04 - advice of Andreas | |
60 | ||
61 | fNhits = 0; | |
62 | fIshunt = 2; // All hits are associated with particles entering the calorimeter | |
63 | fTimeCut = 30e-09; | |
64 | } | |
65 | ||
66 | //______________________________________________________________________ | |
67 | AliEMCALv1::~AliEMCALv1(){ | |
68 | // dtor | |
69 | ||
70 | if ( fHits) { | |
71 | fHits->Delete(); | |
72 | delete fHits; | |
73 | fHits = 0; | |
74 | } | |
75 | } | |
76 | ||
77 | //______________________________________________________________________ | |
78 | void AliEMCALv1::AddHit(Int_t shunt, Int_t primary, Int_t tracknumber, Int_t iparent, Float_t ienergy, | |
79 | Int_t id, Float_t * hits,Float_t * p){ | |
80 | // Add a hit to the hit list. | |
81 | // An EMCAL hit is the sum of all hits in a tower section | |
82 | // originating from the same entering particle | |
83 | Int_t hitCounter; | |
84 | ||
85 | AliEMCALHit *newHit; | |
86 | AliEMCALHit *curHit; | |
87 | Bool_t deja = kFALSE; | |
88 | ||
89 | newHit = new AliEMCALHit(shunt, primary, tracknumber, iparent, ienergy, id, hits, p); | |
90 | for ( hitCounter = fNhits-1; hitCounter >= 0 && !deja; hitCounter-- ) { | |
91 | curHit = (AliEMCALHit*) (*fHits)[hitCounter]; | |
92 | // We add hits with the same tracknumber, while GEANT treats | |
93 | // primaries succesively | |
94 | if(curHit->GetPrimary() != primary) | |
95 | break; | |
96 | if( *curHit == *newHit ) { | |
97 | *curHit = *curHit + *newHit; | |
98 | deja = kTRUE; | |
99 | } // end if | |
100 | } // end for hitCounter | |
101 | ||
102 | if ( !deja ) { | |
103 | new((*fHits)[fNhits]) AliEMCALHit(*newHit); | |
104 | fNhits++; | |
105 | } // end if | |
106 | ||
107 | delete newHit; | |
108 | } | |
109 | //______________________________________________________________________ | |
110 | void AliEMCALv1::StepManager(void){ | |
111 | // Accumulates hits as long as the track stays in a tower | |
112 | ||
113 | Int_t id[2]; // (phi, Eta) indices | |
114 | // position wrt MRS and energy deposited | |
115 | Float_t xyzte[5]={0.,0.,0.,0.,0.};// position wrt MRS, time and energy deposited | |
116 | Float_t pmom[4]={0.,0.,0.,0.}; | |
117 | TLorentzVector pos; // Lorentz vector of the track current position. | |
118 | TLorentzVector mom; // Lorentz vector of the track current momentum. | |
119 | Int_t tracknumber = gAlice->GetMCApp()->GetCurrentTrackNumber(); | |
120 | static Float_t ienergy = 0; | |
121 | Int_t copy = 0; | |
122 | ||
123 | AliEMCALGeometry * geom = GetGeometry() ; | |
124 | ||
125 | static Int_t idXPHI = gMC->VolId("XPHI"); | |
126 | if(gMC->CurrentVolID(copy) == idXPHI ) { // We are in a Scintillator Layer | |
127 | Float_t depositedEnergy ; | |
128 | ||
129 | if( ((depositedEnergy = gMC->Edep()) > 0.) && (gMC->TrackTime() < fTimeCut)){// Track is inside a scintillator and deposits some energy | |
130 | if (fCurPrimary==-1) | |
131 | fCurPrimary=gAlice->GetMCApp()->GetPrimary(tracknumber); | |
132 | ||
133 | if (fCurParent==-1 || tracknumber != fCurTrack) { | |
134 | // Check parentage | |
135 | Int_t parent=tracknumber; | |
136 | if (fCurParent != -1) { | |
137 | while (parent != fCurParent && parent != -1) { | |
138 | TParticle *part=gAlice->GetMCApp()->Particle(parent); | |
139 | parent=part->GetFirstMother(); | |
140 | } | |
141 | } | |
142 | if (fCurParent==-1 || parent==-1) { | |
143 | Int_t parent=tracknumber; | |
144 | TParticle *part=gAlice->GetMCApp()->Particle(parent); | |
145 | while (parent != -1 && geom->IsInEMCAL(part->Vx(),part->Vy(),part->Vz())) { | |
146 | parent=part->GetFirstMother(); | |
147 | if (parent!=-1) | |
148 | part=gAlice->GetMCApp()->Particle(parent); | |
149 | } | |
150 | fCurParent=parent; | |
151 | if (fCurParent==-1) | |
152 | Error("StepManager","Cannot find parent"); | |
153 | else { | |
154 | TParticle *part=gAlice->GetMCApp()->Particle(fCurParent); | |
155 | ienergy = part->Energy(); | |
156 | } | |
157 | while (parent != -1) { | |
158 | part=gAlice->GetMCApp()->Particle(parent); | |
159 | part->SetBit(kKeepBit); | |
160 | parent=part->GetFirstMother(); | |
161 | } | |
162 | } | |
163 | fCurTrack=tracknumber; | |
164 | } | |
165 | gMC->TrackPosition(pos); | |
166 | xyzte[0] = pos[0]; | |
167 | xyzte[1] = pos[1]; | |
168 | xyzte[2] = pos[2]; | |
169 | xyzte[3] = gMC->TrackTime() ; | |
170 | ||
171 | gMC->TrackMomentum(mom); | |
172 | pmom[0] = mom[0]; | |
173 | pmom[1] = mom[1]; | |
174 | pmom[2] = mom[2]; | |
175 | pmom[3] = mom[3]; | |
176 | ||
177 | gMC->CurrentVolOffID(1, id[0]); // get the POLY copy number; | |
178 | gMC->CurrentVolID(id[1]); // get the phi number inside the layer | |
179 | ||
180 | Int_t tower = (id[0]-1) % geom->GetNZ() + 1 + (id[1] - 1) * geom->GetNZ() ; | |
181 | Int_t layer = static_cast<Int_t>((id[0]-1)/(geom->GetNZ())) + 1 ; | |
182 | Int_t absid = tower; | |
183 | Int_t nlayers = geom->GetNECLayers(); | |
184 | if ((layer > nlayers)||(layer<1)) | |
185 | Fatal("StepManager", "Wrong calculation of layer number: layer = %d > %d\n", layer, nlayers) ; | |
186 | ||
187 | Float_t lightYield = depositedEnergy ; | |
188 | // Apply Birk's law (copied from G3BIRK) | |
189 | ||
190 | if (gMC->TrackCharge()!=0) { // Check | |
191 | Float_t birkC1Mod = 0; | |
192 | if (fBirkC0==1){ // Apply correction for higher charge states | |
193 | if (TMath::Abs(gMC->TrackCharge())>=2) | |
194 | birkC1Mod=fBirkC1*7.2/12.6; | |
195 | else | |
196 | birkC1Mod=fBirkC1; | |
197 | } | |
198 | Float_t dedxcm; | |
199 | if (gMC->TrackStep()>0) | |
200 | dedxcm=1000.*gMC->Edep()/gMC->TrackStep(); | |
201 | else | |
202 | dedxcm=0; | |
203 | lightYield=lightYield/(1.+birkC1Mod*dedxcm+fBirkC2*dedxcm*dedxcm); | |
204 | } | |
205 | ||
206 | // use sampling fraction to get original energy --HG | |
207 | xyzte[4] = lightYield * geom->GetSampling(); | |
208 | ||
209 | if (gDebug == 2) | |
210 | printf("StepManager: id0 = %d, id1 = %d, absid = %d tower = %d layer = %d energy = %f\n", id[0], id[1], absid, tower, layer, xyzte[4]) ; | |
211 | ||
212 | AddHit(fIshunt, fCurPrimary,tracknumber, fCurParent, ienergy, absid, xyzte, pmom); | |
213 | } // there is deposited energy | |
214 | } | |
215 | } | |
216 | ||
217 | void AliEMCALv1::RemapTrackHitIDs(Int_t *map) { | |
218 | // remap track index numbers for primary and parent indices | |
219 | // (Called by AliStack::PurifyKine) | |
220 | if (Hits()==0) | |
221 | return; | |
222 | TIter hitIter(Hits()); | |
223 | Int_t iHit=0; | |
224 | while (AliEMCALHit *hit=dynamic_cast<AliEMCALHit*>(hitIter()) ) { | |
225 | if (map[hit->GetIparent()]==-99) | |
226 | cout << "Remapping, found -99 for parent id " << hit->GetIparent() << ", " << map[hit->GetIparent()] << ", iHit " << iHit << endl; | |
227 | hit->SetIparent(map[hit->GetIparent()]); | |
228 | if (map[hit->GetPrimary()]==-99) | |
229 | cout << "Remapping, found -99 for primary id " << hit->GetPrimary() << ", " << map[hit->GetPrimary()] << ", iHit " << iHit << endl; | |
230 | hit->SetPrimary(map[hit->GetPrimary()]); | |
231 | iHit++; | |
232 | } | |
233 | } | |
234 | ||
235 | void AliEMCALv1::FinishPrimary() { | |
236 | // finish primary | |
237 | fCurPrimary=-1; | |
238 | fCurParent=-1; | |
239 | fCurTrack=-1; | |
240 | } |