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14 **************************************************************************/
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
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.
28 // 15/02/2002 .... Yves Schutz
29 // 1. fSamplingFraction and fLayerToPreshowerRatio have been removed
30 // 2. Timing signal is collected and added to hit
32 // --- ROOT system ---
33 #include <TParticle.h>
34 #include <TVirtualMC.h>
36 // --- Standard library ---
38 // --- AliRoot header files ---
39 #include "AliEMCALv1.h"
40 #include "AliEMCALHit.h"
41 #include "AliEMCALGeometry.h"
48 //______________________________________________________________________
49 AliEMCALv1::AliEMCALv1()
59 //______________________________________________________________________
60 AliEMCALv1::AliEMCALv1(const char *name, const char *title)
61 : AliEMCALv0(name,title),
69 fHits= new TClonesArray("AliEMCALHit",1000);
70 // gAlice->GetMCApp()->AddHitList(fHits); // 20-dec-04 - advice of Andreas
73 fIshunt = 2; // All hits are associated with particles entering the calorimeter
76 //______________________________________________________________________
77 AliEMCALv1::AliEMCALv1(const AliEMCALv1 & emcal)
79 fCurPrimary(emcal.fCurPrimary),
80 fCurParent(emcal.fCurParent),
81 fCurTrack(emcal.fCurTrack),
82 fTimeCut(emcal.fTimeCut)
87 //______________________________________________________________________
88 AliEMCALv1::~AliEMCALv1(){
98 //______________________________________________________________________
99 void AliEMCALv1::AddHit(Int_t shunt, Int_t primary, Int_t tracknumber, Int_t iparent, Float_t ienergy,
100 Int_t id, Float_t * hits,Float_t * p){
101 // Add a hit to the hit list.
102 // An EMCAL hit is the sum of all hits in a tower section
103 // originating from the same entering particle
108 Bool_t deja = kFALSE;
110 newHit = new AliEMCALHit(shunt, primary, tracknumber, iparent, ienergy, id, hits, p);
111 for ( hitCounter = fNhits-1; hitCounter >= 0 && !deja; hitCounter-- ) {
112 curHit = (AliEMCALHit*) (*fHits)[hitCounter];
113 // We add hits with the same tracknumber, while GEANT treats
114 // primaries succesively
115 if(curHit->GetPrimary() != primary)
117 if( *curHit == *newHit ) {
118 *curHit = *curHit + *newHit;
121 } // end for hitCounter
124 new((*fHits)[fNhits]) AliEMCALHit(*newHit);
130 //______________________________________________________________________
131 void AliEMCALv1::StepManager(void){
132 // Accumulates hits as long as the track stays in a tower
134 Int_t id[2]; // (phi, Eta) indices
135 // position wrt MRS and energy deposited
136 Float_t xyzte[5]={0.,0.,0.,0.,0.};// position wrt MRS, time and energy deposited
137 Float_t pmom[4]={0.,0.,0.,0.};
138 TLorentzVector pos; // Lorentz vector of the track current position.
139 TLorentzVector mom; // Lorentz vector of the track current momentum.
140 Int_t tracknumber = gAlice->GetMCApp()->GetCurrentTrackNumber();
141 static Float_t ienergy = 0;
144 AliEMCALGeometry * geom = GetGeometry() ;
146 static Int_t idXPHI = gMC->VolId("XPHI");
147 if(gMC->CurrentVolID(copy) == idXPHI ) { // We are in a Scintillator Layer
148 Float_t depositedEnergy ;
150 if( ((depositedEnergy = gMC->Edep()) > 0.) && (gMC->TrackTime() < fTimeCut)){// Track is inside a scintillator and deposits some energy
152 fCurPrimary=gAlice->GetMCApp()->GetPrimary(tracknumber);
154 if (fCurParent==-1 || tracknumber != fCurTrack) {
156 Int_t parent=tracknumber;
157 if (fCurParent != -1) {
158 while (parent != fCurParent && parent != -1) {
159 TParticle *part=gAlice->GetMCApp()->Particle(parent);
160 parent=part->GetFirstMother();
163 if (fCurParent==-1 || parent==-1) {
164 Int_t parent=tracknumber;
165 TParticle *part=gAlice->GetMCApp()->Particle(parent);
166 while (parent != -1 && geom->IsInEMCAL(part->Vx(),part->Vy(),part->Vz())) {
167 parent=part->GetFirstMother();
169 part=gAlice->GetMCApp()->Particle(parent);
173 Error("StepManager","Cannot find parent");
175 TParticle *part=gAlice->GetMCApp()->Particle(fCurParent);
176 ienergy = part->Energy();
178 while (parent != -1) {
179 part=gAlice->GetMCApp()->Particle(parent);
180 part->SetBit(kKeepBit);
181 parent=part->GetFirstMother();
184 fCurTrack=tracknumber;
186 gMC->TrackPosition(pos);
190 xyzte[3] = gMC->TrackTime() ;
192 gMC->TrackMomentum(mom);
198 gMC->CurrentVolOffID(1, id[0]); // get the POLY copy number;
199 gMC->CurrentVolID(id[1]); // get the phi number inside the layer
201 Int_t tower = (id[0]-1) % geom->GetNZ() + 1 + (id[1] - 1) * geom->GetNZ() ;
202 Int_t layer = static_cast<Int_t>((id[0]-1)/(geom->GetNZ())) + 1 ;
204 Int_t nlayers = geom->GetNECLayers();
205 if ((layer > nlayers)||(layer<1))
206 Fatal("StepManager", "Wrong calculation of layer number: layer = %d > %d\n", layer, nlayers) ;
208 Float_t lightYield = depositedEnergy ;
209 // Apply Birk's law (copied from G3BIRK)
211 if (gMC->TrackCharge()!=0) { // Check
212 Float_t birkC1Mod = 0;
213 if (fBirkC0==1){ // Apply correction for higher charge states
214 if (TMath::Abs(gMC->TrackCharge())>=2)
215 birkC1Mod=fBirkC1*7.2/12.6;
220 if (gMC->TrackStep()>0)
221 dedxcm=1000.*gMC->Edep()/gMC->TrackStep();
224 lightYield=lightYield/(1.+birkC1Mod*dedxcm+fBirkC2*dedxcm*dedxcm);
227 // use sampling fraction to get original energy --HG
228 xyzte[4] = lightYield * geom->GetSampling();
231 printf("StepManager: id0 = %d, id1 = %d, absid = %d tower = %d layer = %d energy = %f\n", id[0], id[1], absid, tower, layer, xyzte[4]) ;
233 AddHit(fIshunt, fCurPrimary,tracknumber, fCurParent, ienergy, absid, xyzte, pmom);
234 } // there is deposited energy
238 void AliEMCALv1::RemapTrackHitIDs(Int_t *map) {
239 // remap track index numbers for primary and parent indices
240 // (Called by AliStack::PurifyKine)
243 TIter hitIter(Hits());
245 while (AliEMCALHit *hit=dynamic_cast<AliEMCALHit*>(hitIter()) ) {
246 if (map[hit->GetIparent()]==-99)
247 cout << "Remapping, found -99 for parent id " << hit->GetIparent() << ", " << map[hit->GetIparent()] << ", iHit " << iHit << endl;
248 hit->SetIparent(map[hit->GetIparent()]);
249 if (map[hit->GetPrimary()]==-99)
250 cout << "Remapping, found -99 for primary id " << hit->GetPrimary() << ", " << map[hit->GetPrimary()] << ", iHit " << iHit << endl;
251 hit->SetPrimary(map[hit->GetPrimary()]);
256 void AliEMCALv1::FinishPrimary() {