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b13bbe81 | 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 | //_________________________________________________________________________ | |
fdebddeb | 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 | //*-- | |
b13bbe81 | 23 | //*-- Author: Sahal Yacoob (LBL /UCT) |
24 | //*-- : Jennifer Klay (LBL) | |
fceb09ed | 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 | ||
1f4d29d2 | 28 | // 15/02/2002 .... Yves Schutz |
29 | // 1. fSamplingFraction and fLayerToPreshowerRatio have been removed | |
30 | // 2. Timing signal is collected and added to hit | |
b13bbe81 | 31 | |
32 | // --- ROOT system --- | |
7ca4655f | 33 | #include <TClonesArray.h> |
cde6a23d | 34 | #include <TParticle.h> |
35 | #include <TVirtualMC.h> | |
b13bbe81 | 36 | |
37 | // --- Standard library --- | |
38 | ||
b13bbe81 | 39 | // --- AliRoot header files --- |
b13bbe81 | 40 | #include "AliEMCALv1.h" |
41 | #include "AliEMCALHit.h" | |
42 | #include "AliEMCALGeometry.h" | |
b13bbe81 | 43 | #include "AliRun.h" |
5d12ce38 | 44 | #include "AliMC.h" |
5bf6eb16 | 45 | #include "AliStack.h" |
b13bbe81 | 46 | |
0267cfa6 | 47 | using std::cout; |
48 | using std::endl; | |
b13bbe81 | 49 | ClassImp(AliEMCALv1) |
50 | ||
51 | ||
52 | //______________________________________________________________________ | |
18a21c7c | 53 | AliEMCALv1::AliEMCALv1() |
54 | : AliEMCALv0(), | |
55 | fCurPrimary(-1), | |
56 | fCurParent(-1), | |
57 | fCurTrack(-1), | |
58 | fTimeCut(30e-09) | |
59 | { | |
60 | // default ctor | |
b13bbe81 | 61 | } |
1f4d29d2 | 62 | |
b13bbe81 | 63 | //______________________________________________________________________ |
28135539 | 64 | AliEMCALv1::AliEMCALv1(const char *name, const char *title, |
65 | const Bool_t checkGeoAndRun) | |
66 | : AliEMCALv0(name,title,checkGeoAndRun), | |
18a21c7c | 67 | fCurPrimary(-1), |
68 | fCurParent(-1), | |
69 | fCurTrack(-1), | |
70 | fTimeCut(30e-09) | |
71 | { | |
b13bbe81 | 72 | // Standard Creator. |
73 | ||
74 | fHits= new TClonesArray("AliEMCALHit",1000); | |
1963b290 | 75 | // gAlice->GetMCApp()->AddHitList(fHits); // 20-dec-04 - advice of Andreas |
b13bbe81 | 76 | |
77 | fNhits = 0; | |
fceb09ed | 78 | fIshunt = 2; // All hits are associated with particles entering the calorimeter |
b13bbe81 | 79 | } |
1f4d29d2 | 80 | |
b13bbe81 | 81 | //______________________________________________________________________ |
82 | AliEMCALv1::~AliEMCALv1(){ | |
cef7a4cc | 83 | // dtor |
84 | ||
85 | if ( fHits ) { | |
86 | fHits->Clear(); | |
87 | delete fHits; | |
88 | fHits = 0; | |
89 | } | |
b13bbe81 | 90 | } |
ab37d09c | 91 | |
b13bbe81 | 92 | //______________________________________________________________________ |
61e0abb5 | 93 | void AliEMCALv1::AddHit(Int_t shunt, Int_t primary, Int_t tracknumber, Int_t iparent, Float_t ienergy, |
94 | Int_t id, Float_t * hits,Float_t * p){ | |
b13bbe81 | 95 | // Add a hit to the hit list. |
fdebddeb | 96 | // An EMCAL hit is the sum of all hits in a tower section |
7b6cc0b5 | 97 | // originating from the same entering particle |
53e430a3 | 98 | Int_t hitCounter=0; |
b13bbe81 | 99 | |
53e430a3 | 100 | AliEMCALHit *newHit=0; |
101 | AliEMCALHit *curHit=0; | |
b13bbe81 | 102 | Bool_t deja = kFALSE; |
103 | ||
61e0abb5 | 104 | newHit = new AliEMCALHit(shunt, primary, tracknumber, iparent, ienergy, id, hits, p); |
fdebddeb | 105 | for ( hitCounter = fNhits-1; hitCounter >= 0 && !deja; hitCounter-- ) { |
b13bbe81 | 106 | curHit = (AliEMCALHit*) (*fHits)[hitCounter]; |
61e0abb5 | 107 | // We add hits with the same tracknumber, while GEANT treats |
b13bbe81 | 108 | // primaries succesively |
7b6cc0b5 | 109 | if(curHit->GetPrimary() != primary) |
110 | break; | |
b13bbe81 | 111 | if( *curHit == *newHit ) { |
112 | *curHit = *curHit + *newHit; | |
113 | deja = kTRUE; | |
fdebddeb | 114 | } // end if |
b13bbe81 | 115 | } // end for hitCounter |
fdebddeb | 116 | |
b13bbe81 | 117 | if ( !deja ) { |
118 | new((*fHits)[fNhits]) AliEMCALHit(*newHit); | |
119 | fNhits++; | |
120 | } // end if | |
1963b290 | 121 | |
b13bbe81 | 122 | delete newHit; |
123 | } | |
124 | //______________________________________________________________________ | |
125 | void AliEMCALv1::StepManager(void){ | |
8ddf73e5 | 126 | // Accumulates hits as long as the track stays in a tower |
1f4d29d2 | 127 | |
53e430a3 | 128 | Int_t id[2]={0,0}; // (phi, Eta) indices |
1f4d29d2 | 129 | // position wrt MRS and energy deposited |
130 | Float_t xyzte[5]={0.,0.,0.,0.,0.};// position wrt MRS, time and energy deposited | |
131 | Float_t pmom[4]={0.,0.,0.,0.}; | |
132 | TLorentzVector pos; // Lorentz vector of the track current position. | |
133 | TLorentzVector mom; // Lorentz vector of the track current momentum. | |
5d12ce38 | 134 | Int_t tracknumber = gAlice->GetMCApp()->GetCurrentTrackNumber(); |
1f4d29d2 | 135 | static Float_t ienergy = 0; |
136 | Int_t copy = 0; | |
1f4d29d2 | 137 | |
05a92d59 | 138 | AliEMCALGeometry * geom = GetGeometry() ; |
139 | ||
53e430a3 | 140 | TParticle *part=0; |
141 | Int_t parent=-1; | |
e63c78ba | 142 | |
d6fb41ac | 143 | static Int_t idXPHI = gMC->VolId("XPHI"); |
144 | if(gMC->CurrentVolID(copy) == idXPHI ) { // We are in a Scintillator Layer | |
dfce7eb2 | 145 | Float_t depositedEnergy ; |
61e0abb5 | 146 | |
9b358506 | 147 | if( ((depositedEnergy = gMC->Edep()) > 0.) && (gMC->TrackTime() < fTimeCut)){// Track is inside a scintillator and deposits some energy |
ab37d09c | 148 | if (fCurPrimary==-1) |
149 | fCurPrimary=gAlice->GetMCApp()->GetPrimary(tracknumber); | |
150 | ||
151 | if (fCurParent==-1 || tracknumber != fCurTrack) { | |
152 | // Check parentage | |
e63c78ba | 153 | //Int_t parent=tracknumber; |
154 | parent=tracknumber; | |
ab37d09c | 155 | if (fCurParent != -1) { |
156 | while (parent != fCurParent && parent != -1) { | |
e63c78ba | 157 | //TParticle *part=gAlice->GetMCApp()->Particle(parent); |
158 | part=gAlice->GetMCApp()->Particle(parent); | |
ab37d09c | 159 | parent=part->GetFirstMother(); |
160 | } | |
161 | } | |
162 | if (fCurParent==-1 || parent==-1) { | |
e63c78ba | 163 | //Int_t parent=tracknumber; |
164 | //TParticle *part=gAlice->GetMCApp()->Particle(parent); | |
165 | parent=tracknumber; | |
166 | part=gAlice->GetMCApp()->Particle(parent); | |
ab37d09c | 167 | while (parent != -1 && geom->IsInEMCAL(part->Vx(),part->Vy(),part->Vz())) { |
168 | parent=part->GetFirstMother(); | |
169 | if (parent!=-1) | |
170 | part=gAlice->GetMCApp()->Particle(parent); | |
171 | } | |
172 | fCurParent=parent; | |
173 | if (fCurParent==-1) | |
174 | Error("StepManager","Cannot find parent"); | |
175 | else { | |
e63c78ba | 176 | //TParticle *part=gAlice->GetMCApp()->Particle(fCurParent); |
177 | part=gAlice->GetMCApp()->Particle(fCurParent); | |
ab37d09c | 178 | ienergy = part->Energy(); |
179 | } | |
180 | while (parent != -1) { | |
181 | part=gAlice->GetMCApp()->Particle(parent); | |
182 | part->SetBit(kKeepBit); | |
183 | parent=part->GetFirstMother(); | |
184 | } | |
185 | } | |
186 | fCurTrack=tracknumber; | |
187 | } | |
dfce7eb2 | 188 | gMC->TrackPosition(pos); |
189 | xyzte[0] = pos[0]; | |
190 | xyzte[1] = pos[1]; | |
191 | xyzte[2] = pos[2]; | |
192 | xyzte[3] = gMC->TrackTime() ; | |
193 | ||
194 | gMC->TrackMomentum(mom); | |
195 | pmom[0] = mom[0]; | |
196 | pmom[1] = mom[1]; | |
197 | pmom[2] = mom[2]; | |
198 | pmom[3] = mom[3]; | |
199 | ||
200 | gMC->CurrentVolOffID(1, id[0]); // get the POLY copy number; | |
201 | gMC->CurrentVolID(id[1]); // get the phi number inside the layer | |
dfce7eb2 | 202 | |
de56e4f9 | 203 | Int_t tower = (id[0]-1) % geom->GetNZ() + 1 + (id[1] - 1) * geom->GetNZ() ; |
7b6cc0b5 | 204 | Int_t layer = static_cast<Int_t>((id[0]-1)/(geom->GetNZ())) + 1 ; |
fdebddeb | 205 | Int_t absid = tower; |
206 | Int_t nlayers = geom->GetNECLayers(); | |
207 | if ((layer > nlayers)||(layer<1)) | |
208 | Fatal("StepManager", "Wrong calculation of layer number: layer = %d > %d\n", layer, nlayers) ; | |
209 | ||
7b6cc0b5 | 210 | Float_t lightYield = depositedEnergy ; |
ab37d09c | 211 | // Apply Birk's law (copied from G3BIRK) |
212 | ||
213 | if (gMC->TrackCharge()!=0) { // Check | |
cde6a23d | 214 | Float_t birkC1Mod = 0; |
ab37d09c | 215 | if (fBirkC0==1){ // Apply correction for higher charge states |
41289e86 | 216 | if (TMath::Abs(gMC->TrackCharge())>=2) |
cde6a23d | 217 | birkC1Mod=fBirkC1*7.2/12.6; |
ab37d09c | 218 | else |
cde6a23d | 219 | birkC1Mod=fBirkC1; |
ab37d09c | 220 | } |
53e430a3 | 221 | Float_t dedxcm=0.; |
ab37d09c | 222 | if (gMC->TrackStep()>0) |
223 | dedxcm=1000.*gMC->Edep()/gMC->TrackStep(); | |
224 | else | |
225 | dedxcm=0; | |
cde6a23d | 226 | lightYield=lightYield/(1.+birkC1Mod*dedxcm+fBirkC2*dedxcm*dedxcm); |
ab37d09c | 227 | } |
7b6cc0b5 | 228 | |
ab37d09c | 229 | // use sampling fraction to get original energy --HG |
230 | xyzte[4] = lightYield * geom->GetSampling(); | |
231 | ||
7b6cc0b5 | 232 | if (gDebug == 2) |
fdebddeb | 233 | printf("StepManager: id0 = %d, id1 = %d, absid = %d tower = %d layer = %d energy = %f\n", id[0], id[1], absid, tower, layer, xyzte[4]) ; |
7b6cc0b5 | 234 | |
ab37d09c | 235 | AddHit(fIshunt, fCurPrimary,tracknumber, fCurParent, ienergy, absid, xyzte, pmom); |
b13bbe81 | 236 | } // there is deposited energy |
1f4d29d2 | 237 | } |
b13bbe81 | 238 | } |
ab37d09c | 239 | |
d297ef6e | 240 | //___________________________________________________________ |
ab37d09c | 241 | void AliEMCALv1::RemapTrackHitIDs(Int_t *map) { |
242 | // remap track index numbers for primary and parent indices | |
243 | // (Called by AliStack::PurifyKine) | |
244 | if (Hits()==0) | |
245 | return; | |
cde6a23d | 246 | TIter hitIter(Hits()); |
247 | Int_t iHit=0; | |
248 | while (AliEMCALHit *hit=dynamic_cast<AliEMCALHit*>(hitIter()) ) { | |
ab37d09c | 249 | if (map[hit->GetIparent()]==-99) |
cde6a23d | 250 | cout << "Remapping, found -99 for parent id " << hit->GetIparent() << ", " << map[hit->GetIparent()] << ", iHit " << iHit << endl; |
ab37d09c | 251 | hit->SetIparent(map[hit->GetIparent()]); |
252 | if (map[hit->GetPrimary()]==-99) | |
cde6a23d | 253 | cout << "Remapping, found -99 for primary id " << hit->GetPrimary() << ", " << map[hit->GetPrimary()] << ", iHit " << iHit << endl; |
ab37d09c | 254 | hit->SetPrimary(map[hit->GetPrimary()]); |
cde6a23d | 255 | iHit++; |
ab37d09c | 256 | } |
257 | } | |
258 | ||
d297ef6e | 259 | //___________________________________________________________ |
ab37d09c | 260 | void AliEMCALv1::FinishPrimary() { |
cde6a23d | 261 | // finish primary |
ab37d09c | 262 | fCurPrimary=-1; |
263 | fCurParent=-1; | |
264 | fCurTrack=-1; | |
265 | } |