MUON + CheckCompiler
[u/mrichter/AliRoot.git] / EMCAL / AliEMCALv1.cxx
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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 47using std::cout;
48using std::endl;
b13bbe81 49ClassImp(AliEMCALv1)
50
51
52//______________________________________________________________________
18a21c7c 53AliEMCALv1::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 64AliEMCALv1::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//______________________________________________________________________
82AliEMCALv1::~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 93void 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//______________________________________________________________________
125void 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
2942f542 143 static Int_t idXPHI = TVirtualMC::GetMC()->VolId("XPHI");
144 if(TVirtualMC::GetMC()->CurrentVolID(copy) == idXPHI ) { // We are in a Scintillator Layer
dfce7eb2 145 Float_t depositedEnergy ;
61e0abb5 146
2942f542 147 if( ((depositedEnergy = TVirtualMC::GetMC()->Edep()) > 0.) && (TVirtualMC::GetMC()->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 }
2942f542 188 TVirtualMC::GetMC()->TrackPosition(pos);
dfce7eb2 189 xyzte[0] = pos[0];
190 xyzte[1] = pos[1];
191 xyzte[2] = pos[2];
2942f542 192 xyzte[3] = TVirtualMC::GetMC()->TrackTime() ;
dfce7eb2 193
2942f542 194 TVirtualMC::GetMC()->TrackMomentum(mom);
dfce7eb2 195 pmom[0] = mom[0];
196 pmom[1] = mom[1];
197 pmom[2] = mom[2];
198 pmom[3] = mom[3];
199
2942f542 200 TVirtualMC::GetMC()->CurrentVolOffID(1, id[0]); // get the POLY copy number;
201 TVirtualMC::GetMC()->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
2942f542 213 if (TVirtualMC::GetMC()->TrackCharge()!=0) { // Check
cde6a23d 214 Float_t birkC1Mod = 0;
ab37d09c 215 if (fBirkC0==1){ // Apply correction for higher charge states
2942f542 216 if (TMath::Abs(TVirtualMC::GetMC()->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.;
2942f542 222 if (TVirtualMC::GetMC()->TrackStep()>0)
223 dedxcm=1000.*TVirtualMC::GetMC()->Edep()/TVirtualMC::GetMC()->TrackStep();
ab37d09c 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 241void 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 260void AliEMCALv1::FinishPrimary() {
cde6a23d 261 // finish primary
ab37d09c 262 fCurPrimary=-1;
263 fCurParent=-1;
264 fCurTrack=-1;
265}