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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():AliEMCALv0(), fCurPrimary(-1), fCurParent(-1), fCurTrack(-1){
54 //______________________________________________________________________
55 AliEMCALv1::AliEMCALv1(const char *name, const char *title):
56 AliEMCALv0(name,title), fCurPrimary(-1), fCurParent(-1), fCurTrack(-1) {
59 fHits= new TClonesArray("AliEMCALHit",1000);
60 // gAlice->GetMCApp()->AddHitList(fHits); // 20-dec-04 - advice of Andreas
63 fIshunt = 2; // All hits are associated with particles entering the calorimeter
67 //______________________________________________________________________
68 AliEMCALv1::~AliEMCALv1(){
78 //______________________________________________________________________
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){
81 // Add a hit to the hit list.
82 // An EMCAL hit is the sum of all hits in a tower section
83 // originating from the same entering particle
90 newHit = new AliEMCALHit(shunt, primary, tracknumber, iparent, ienergy, id, hits, p);
91 for ( hitCounter = fNhits-1; hitCounter >= 0 && !deja; hitCounter-- ) {
92 curHit = (AliEMCALHit*) (*fHits)[hitCounter];
93 // We add hits with the same tracknumber, while GEANT treats
94 // primaries succesively
95 if(curHit->GetPrimary() != primary)
97 if( *curHit == *newHit ) {
98 *curHit = *curHit + *newHit;
101 } // end for hitCounter
104 new((*fHits)[fNhits]) AliEMCALHit(*newHit);
110 //______________________________________________________________________
111 void AliEMCALv1::StepManager(void){
112 // Accumulates hits as long as the track stays in a tower
114 Int_t id[2]; // (phi, Eta) indices
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.
120 Int_t tracknumber = gAlice->GetMCApp()->GetCurrentTrackNumber();
121 static Float_t ienergy = 0;
124 AliEMCALGeometry * geom = GetGeometry() ;
126 static Int_t idXPHI = gMC->VolId("XPHI");
127 if(gMC->CurrentVolID(copy) == idXPHI ) { // We are in a Scintillator Layer
128 Float_t depositedEnergy ;
130 if( ((depositedEnergy = gMC->Edep()) > 0.) && (gMC->TrackTime() < fTimeCut)){// Track is inside a scintillator and deposits some energy
132 fCurPrimary=gAlice->GetMCApp()->GetPrimary(tracknumber);
134 if (fCurParent==-1 || tracknumber != fCurTrack) {
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();
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();
149 part=gAlice->GetMCApp()->Particle(parent);
153 Error("StepManager","Cannot find parent");
155 TParticle *part=gAlice->GetMCApp()->Particle(fCurParent);
156 ienergy = part->Energy();
158 while (parent != -1) {
159 part=gAlice->GetMCApp()->Particle(parent);
160 part->SetBit(kKeepBit);
161 parent=part->GetFirstMother();
164 fCurTrack=tracknumber;
166 gMC->TrackPosition(pos);
170 xyzte[3] = gMC->TrackTime() ;
172 gMC->TrackMomentum(mom);
178 gMC->CurrentVolOffID(1, id[0]); // get the POLY copy number;
179 gMC->CurrentVolID(id[1]); // get the phi number inside the layer
181 Int_t tower = (id[0]-1) % geom->GetNZ() + 1 + (id[1] - 1) * geom->GetNZ() ;
182 Int_t layer = static_cast<Int_t>((id[0]-1)/(geom->GetNZ())) + 1 ;
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) ;
188 Float_t lightYield = depositedEnergy ;
189 // Apply Birk's law (copied from G3BIRK)
191 if (gMC->TrackCharge()!=0) { // Check
192 Float_t BirkC1_mod = 0;
193 if (fBirkC0==1){ // Apply correction for higher charge states
194 if (TMath::Abs(gMC->TrackCharge())>=2)
195 BirkC1_mod=fBirkC1*7.2/12.6;
200 if (gMC->TrackStep()>0)
201 dedxcm=1000.*gMC->Edep()/gMC->TrackStep();
204 lightYield=lightYield/(1.+BirkC1_mod*dedxcm+fBirkC2*dedxcm*dedxcm);
207 // use sampling fraction to get original energy --HG
208 xyzte[4] = lightYield * geom->GetSampling();
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]) ;
213 AddHit(fIshunt, fCurPrimary,tracknumber, fCurParent, ienergy, absid, xyzte, pmom);
214 } // there is deposited energy
218 void AliEMCALv1::RemapTrackHitIDs(Int_t *map) {
219 // remap track index numbers for primary and parent indices
220 // (Called by AliStack::PurifyKine)
223 TIter hit_it(Hits());
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()]);
236 void AliEMCALv1::FinishPrimary() {