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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 --- | |
fceb09ed | 33 | #include "TParticle.h" |
5d12ce38 | 34 | #include "TVirtualMC.h" |
b13bbe81 | 35 | |
36 | // --- Standard library --- | |
37 | ||
b13bbe81 | 38 | // --- AliRoot header files --- |
b13bbe81 | 39 | #include "AliEMCALv1.h" |
40 | #include "AliEMCALHit.h" | |
41 | #include "AliEMCALGeometry.h" | |
b13bbe81 | 42 | #include "AliRun.h" |
5d12ce38 | 43 | #include "AliMC.h" |
b13bbe81 | 44 | |
45 | ClassImp(AliEMCALv1) | |
46 | ||
47 | ||
48 | //______________________________________________________________________ | |
ab37d09c | 49 | AliEMCALv1::AliEMCALv1():AliEMCALv0(), fCurPrimary(-1), fCurParent(-1), fCurTrack(-1){ |
b13bbe81 | 50 | // ctor |
7b6cc0b5 | 51 | |
b13bbe81 | 52 | } |
1f4d29d2 | 53 | |
b13bbe81 | 54 | //______________________________________________________________________ |
55 | AliEMCALv1::AliEMCALv1(const char *name, const char *title): | |
ab37d09c | 56 | AliEMCALv0(name,title), fCurPrimary(-1), fCurParent(-1), fCurTrack(-1) { |
b13bbe81 | 57 | // Standard Creator. |
58 | ||
59 | fHits= new TClonesArray("AliEMCALHit",1000); | |
1963b290 | 60 | // gAlice->GetMCApp()->AddHitList(fHits); // 20-dec-04 - advice of Andreas |
b13bbe81 | 61 | |
62 | fNhits = 0; | |
fceb09ed | 63 | fIshunt = 2; // All hits are associated with particles entering the calorimeter |
9b358506 | 64 | fTimeCut = 30e-09; |
b13bbe81 | 65 | } |
1f4d29d2 | 66 | |
b13bbe81 | 67 | //______________________________________________________________________ |
68 | AliEMCALv1::~AliEMCALv1(){ | |
69 | // dtor | |
70 | ||
71 | if ( fHits) { | |
72 | fHits->Delete(); | |
73 | delete fHits; | |
74 | fHits = 0; | |
75 | } | |
76 | } | |
ab37d09c | 77 | |
b13bbe81 | 78 | //______________________________________________________________________ |
61e0abb5 | 79 | void AliEMCALv1::AddHit(Int_t shunt, Int_t primary, Int_t tracknumber, Int_t iparent, Float_t ienergy, |
80 | Int_t id, Float_t * hits,Float_t * p){ | |
b13bbe81 | 81 | // Add a hit to the hit list. |
fdebddeb | 82 | // An EMCAL hit is the sum of all hits in a tower section |
7b6cc0b5 | 83 | // originating from the same entering particle |
b13bbe81 | 84 | Int_t hitCounter; |
85 | ||
86 | AliEMCALHit *newHit; | |
87 | AliEMCALHit *curHit; | |
88 | Bool_t deja = kFALSE; | |
89 | ||
61e0abb5 | 90 | newHit = new AliEMCALHit(shunt, primary, tracknumber, iparent, ienergy, id, hits, p); |
fdebddeb | 91 | for ( hitCounter = fNhits-1; hitCounter >= 0 && !deja; hitCounter-- ) { |
b13bbe81 | 92 | curHit = (AliEMCALHit*) (*fHits)[hitCounter]; |
61e0abb5 | 93 | // We add hits with the same tracknumber, while GEANT treats |
b13bbe81 | 94 | // primaries succesively |
7b6cc0b5 | 95 | if(curHit->GetPrimary() != primary) |
96 | break; | |
b13bbe81 | 97 | if( *curHit == *newHit ) { |
98 | *curHit = *curHit + *newHit; | |
99 | deja = kTRUE; | |
fdebddeb | 100 | } // end if |
b13bbe81 | 101 | } // end for hitCounter |
fdebddeb | 102 | |
b13bbe81 | 103 | if ( !deja ) { |
104 | new((*fHits)[fNhits]) AliEMCALHit(*newHit); | |
105 | fNhits++; | |
106 | } // end if | |
1963b290 | 107 | |
b13bbe81 | 108 | delete newHit; |
109 | } | |
110 | //______________________________________________________________________ | |
111 | void AliEMCALv1::StepManager(void){ | |
8ddf73e5 | 112 | // Accumulates hits as long as the track stays in a tower |
1f4d29d2 | 113 | |
fdebddeb | 114 | Int_t id[2]; // (phi, Eta) indices |
1f4d29d2 | 115 | // position wrt MRS and energy deposited |
116 | Float_t xyzte[5]={0.,0.,0.,0.,0.};// position wrt MRS, time and energy deposited | |
117 | Float_t pmom[4]={0.,0.,0.,0.}; | |
118 | TLorentzVector pos; // Lorentz vector of the track current position. | |
119 | TLorentzVector mom; // Lorentz vector of the track current momentum. | |
5d12ce38 | 120 | Int_t tracknumber = gAlice->GetMCApp()->GetCurrentTrackNumber(); |
1f4d29d2 | 121 | static Float_t ienergy = 0; |
122 | Int_t copy = 0; | |
1f4d29d2 | 123 | |
05a92d59 | 124 | AliEMCALGeometry * geom = GetGeometry() ; |
125 | ||
d6fb41ac | 126 | static Int_t idXPHI = gMC->VolId("XPHI"); |
127 | if(gMC->CurrentVolID(copy) == idXPHI ) { // We are in a Scintillator Layer | |
dfce7eb2 | 128 | Float_t depositedEnergy ; |
61e0abb5 | 129 | |
9b358506 | 130 | if( ((depositedEnergy = gMC->Edep()) > 0.) && (gMC->TrackTime() < fTimeCut)){// Track is inside a scintillator and deposits some energy |
ab37d09c | 131 | if (fCurPrimary==-1) |
132 | fCurPrimary=gAlice->GetMCApp()->GetPrimary(tracknumber); | |
133 | ||
134 | if (fCurParent==-1 || tracknumber != fCurTrack) { | |
135 | // Check parentage | |
136 | Int_t parent=tracknumber; | |
137 | if (fCurParent != -1) { | |
138 | while (parent != fCurParent && parent != -1) { | |
139 | TParticle *part=gAlice->GetMCApp()->Particle(parent); | |
140 | parent=part->GetFirstMother(); | |
141 | } | |
142 | } | |
143 | if (fCurParent==-1 || parent==-1) { | |
144 | Int_t parent=tracknumber; | |
145 | TParticle *part=gAlice->GetMCApp()->Particle(parent); | |
146 | while (parent != -1 && geom->IsInEMCAL(part->Vx(),part->Vy(),part->Vz())) { | |
147 | parent=part->GetFirstMother(); | |
148 | if (parent!=-1) | |
149 | part=gAlice->GetMCApp()->Particle(parent); | |
150 | } | |
151 | fCurParent=parent; | |
152 | if (fCurParent==-1) | |
153 | Error("StepManager","Cannot find parent"); | |
154 | else { | |
155 | TParticle *part=gAlice->GetMCApp()->Particle(fCurParent); | |
156 | ienergy = part->Energy(); | |
157 | } | |
158 | while (parent != -1) { | |
159 | part=gAlice->GetMCApp()->Particle(parent); | |
160 | part->SetBit(kKeepBit); | |
161 | parent=part->GetFirstMother(); | |
162 | } | |
163 | } | |
164 | fCurTrack=tracknumber; | |
165 | } | |
dfce7eb2 | 166 | gMC->TrackPosition(pos); |
167 | xyzte[0] = pos[0]; | |
168 | xyzte[1] = pos[1]; | |
169 | xyzte[2] = pos[2]; | |
170 | xyzte[3] = gMC->TrackTime() ; | |
171 | ||
172 | gMC->TrackMomentum(mom); | |
173 | pmom[0] = mom[0]; | |
174 | pmom[1] = mom[1]; | |
175 | pmom[2] = mom[2]; | |
176 | pmom[3] = mom[3]; | |
177 | ||
178 | gMC->CurrentVolOffID(1, id[0]); // get the POLY copy number; | |
179 | gMC->CurrentVolID(id[1]); // get the phi number inside the layer | |
dfce7eb2 | 180 | |
de56e4f9 | 181 | Int_t tower = (id[0]-1) % geom->GetNZ() + 1 + (id[1] - 1) * geom->GetNZ() ; |
7b6cc0b5 | 182 | Int_t layer = static_cast<Int_t>((id[0]-1)/(geom->GetNZ())) + 1 ; |
fdebddeb | 183 | Int_t absid = tower; |
184 | Int_t nlayers = geom->GetNECLayers(); | |
185 | if ((layer > nlayers)||(layer<1)) | |
186 | Fatal("StepManager", "Wrong calculation of layer number: layer = %d > %d\n", layer, nlayers) ; | |
187 | ||
7b6cc0b5 | 188 | Float_t lightYield = depositedEnergy ; |
ab37d09c | 189 | // Apply Birk's law (copied from G3BIRK) |
190 | ||
191 | if (gMC->TrackCharge()!=0) { // Check | |
192 | Float_t BirkC1_mod = 0; | |
193 | if (fBirkC0==1){ // Apply correction for higher charge states | |
41289e86 | 194 | if (TMath::Abs(gMC->TrackCharge())>=2) |
ab37d09c | 195 | BirkC1_mod=fBirkC1*7.2/12.6; |
196 | else | |
197 | BirkC1_mod=fBirkC1; | |
198 | } | |
199 | Float_t dedxcm; | |
200 | if (gMC->TrackStep()>0) | |
201 | dedxcm=1000.*gMC->Edep()/gMC->TrackStep(); | |
202 | else | |
203 | dedxcm=0; | |
204 | lightYield=lightYield/(1.+BirkC1_mod*dedxcm+fBirkC2*dedxcm*dedxcm); | |
205 | } | |
7b6cc0b5 | 206 | |
ab37d09c | 207 | // use sampling fraction to get original energy --HG |
208 | xyzte[4] = lightYield * geom->GetSampling(); | |
209 | ||
7b6cc0b5 | 210 | if (gDebug == 2) |
fdebddeb | 211 | 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 | 212 | |
ab37d09c | 213 | AddHit(fIshunt, fCurPrimary,tracknumber, fCurParent, ienergy, absid, xyzte, pmom); |
b13bbe81 | 214 | } // there is deposited energy |
1f4d29d2 | 215 | } |
b13bbe81 | 216 | } |
ab37d09c | 217 | |
218 | void AliEMCALv1::RemapTrackHitIDs(Int_t *map) { | |
219 | // remap track index numbers for primary and parent indices | |
220 | // (Called by AliStack::PurifyKine) | |
221 | if (Hits()==0) | |
222 | return; | |
223 | TIter hit_it(Hits()); | |
224 | Int_t i_hit=0; | |
225 | while (AliEMCALHit *hit=dynamic_cast<AliEMCALHit*>(hit_it()) ) { | |
226 | if (map[hit->GetIparent()]==-99) | |
227 | cout << "Remapping, found -99 for parent id " << hit->GetIparent() << ", " << map[hit->GetIparent()] << ", i_hit " << i_hit << endl; | |
228 | hit->SetIparent(map[hit->GetIparent()]); | |
229 | if (map[hit->GetPrimary()]==-99) | |
230 | cout << "Remapping, found -99 for primary id " << hit->GetPrimary() << ", " << map[hit->GetPrimary()] << ", i_hit " << i_hit << endl; | |
231 | hit->SetPrimary(map[hit->GetPrimary()]); | |
232 | i_hit++; | |
233 | } | |
234 | } | |
235 | ||
236 | void AliEMCALv1::FinishPrimary() { | |
237 | fCurPrimary=-1; | |
238 | fCurParent=-1; | |
239 | fCurTrack=-1; | |
240 | } |