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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 <TClonesArray.h>
34 #include <TParticle.h>
35 #include <TVirtualMC.h>
37 // --- Standard library ---
39 // --- AliRoot header files ---
40 #include "AliEMCALv1.h"
41 #include "AliEMCALHit.h"
42 #include "AliEMCALGeometry.h"
52 //______________________________________________________________________
53 AliEMCALv1::AliEMCALv1()
63 //______________________________________________________________________
64 AliEMCALv1::AliEMCALv1(const char *name, const char *title,
65 const Bool_t checkGeoAndRun)
66 : AliEMCALv0(name,title,checkGeoAndRun),
74 fHits= new TClonesArray("AliEMCALHit",1000);
75 // gAlice->GetMCApp()->AddHitList(fHits); // 20-dec-04 - advice of Andreas
78 fIshunt = 2; // All hits are associated with particles entering the calorimeter
81 //______________________________________________________________________
82 AliEMCALv1::~AliEMCALv1(){
92 //______________________________________________________________________
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){
95 // Add a hit to the hit list.
96 // An EMCAL hit is the sum of all hits in a tower section
97 // originating from the same entering particle
100 AliEMCALHit *newHit=0;
101 AliEMCALHit *curHit=0;
102 Bool_t deja = kFALSE;
104 newHit = new AliEMCALHit(shunt, primary, tracknumber, iparent, ienergy, id, hits, p);
105 for ( hitCounter = fNhits-1; hitCounter >= 0 && !deja; hitCounter-- ) {
106 curHit = (AliEMCALHit*) (*fHits)[hitCounter];
107 // We add hits with the same tracknumber, while GEANT treats
108 // primaries succesively
109 if(curHit->GetPrimary() != primary)
111 if( *curHit == *newHit ) {
112 *curHit = *curHit + *newHit;
115 } // end for hitCounter
118 new((*fHits)[fNhits]) AliEMCALHit(*newHit);
124 //______________________________________________________________________
125 void AliEMCALv1::StepManager(void){
126 // Accumulates hits as long as the track stays in a tower
128 Int_t id[2]={0,0}; // (phi, Eta) indices
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.
134 Int_t tracknumber = gAlice->GetMCApp()->GetCurrentTrackNumber();
135 static Float_t ienergy = 0;
138 AliEMCALGeometry * geom = GetGeometry() ;
143 static Int_t idXPHI = gMC->VolId("XPHI");
144 if(gMC->CurrentVolID(copy) == idXPHI ) { // We are in a Scintillator Layer
145 Float_t depositedEnergy ;
147 if( ((depositedEnergy = gMC->Edep()) > 0.) && (gMC->TrackTime() < fTimeCut)){// Track is inside a scintillator and deposits some energy
149 fCurPrimary=gAlice->GetMCApp()->GetPrimary(tracknumber);
151 if (fCurParent==-1 || tracknumber != fCurTrack) {
153 //Int_t parent=tracknumber;
155 if (fCurParent != -1) {
156 while (parent != fCurParent && parent != -1) {
157 //TParticle *part=gAlice->GetMCApp()->Particle(parent);
158 part=gAlice->GetMCApp()->Particle(parent);
159 parent=part->GetFirstMother();
162 if (fCurParent==-1 || parent==-1) {
163 //Int_t parent=tracknumber;
164 //TParticle *part=gAlice->GetMCApp()->Particle(parent);
166 part=gAlice->GetMCApp()->Particle(parent);
167 while (parent != -1 && geom->IsInEMCAL(part->Vx(),part->Vy(),part->Vz())) {
168 parent=part->GetFirstMother();
170 part=gAlice->GetMCApp()->Particle(parent);
174 Error("StepManager","Cannot find parent");
176 //TParticle *part=gAlice->GetMCApp()->Particle(fCurParent);
177 part=gAlice->GetMCApp()->Particle(fCurParent);
178 ienergy = part->Energy();
180 while (parent != -1) {
181 part=gAlice->GetMCApp()->Particle(parent);
182 part->SetBit(kKeepBit);
183 parent=part->GetFirstMother();
186 fCurTrack=tracknumber;
188 gMC->TrackPosition(pos);
192 xyzte[3] = gMC->TrackTime() ;
194 gMC->TrackMomentum(mom);
200 gMC->CurrentVolOffID(1, id[0]); // get the POLY copy number;
201 gMC->CurrentVolID(id[1]); // get the phi number inside the layer
203 Int_t tower = (id[0]-1) % geom->GetNZ() + 1 + (id[1] - 1) * geom->GetNZ() ;
204 Int_t layer = static_cast<Int_t>((id[0]-1)/(geom->GetNZ())) + 1 ;
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) ;
210 Float_t lightYield = depositedEnergy ;
211 // Apply Birk's law (copied from G3BIRK)
213 if (gMC->TrackCharge()!=0) { // Check
214 Float_t birkC1Mod = 0;
215 if (fBirkC0==1){ // Apply correction for higher charge states
216 if (TMath::Abs(gMC->TrackCharge())>=2)
217 birkC1Mod=fBirkC1*7.2/12.6;
222 if (gMC->TrackStep()>0)
223 dedxcm=1000.*gMC->Edep()/gMC->TrackStep();
226 lightYield=lightYield/(1.+birkC1Mod*dedxcm+fBirkC2*dedxcm*dedxcm);
229 // use sampling fraction to get original energy --HG
230 xyzte[4] = lightYield * geom->GetSampling();
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]) ;
235 AddHit(fIshunt, fCurPrimary,tracknumber, fCurParent, ienergy, absid, xyzte, pmom);
236 } // there is deposited energy
240 //___________________________________________________________
241 void AliEMCALv1::RemapTrackHitIDs(Int_t *map) {
242 // remap track index numbers for primary and parent indices
243 // (Called by AliStack::PurifyKine)
246 TIter hitIter(Hits());
248 while (AliEMCALHit *hit=dynamic_cast<AliEMCALHit*>(hitIter()) ) {
249 if (map[hit->GetIparent()]==-99)
250 cout << "Remapping, found -99 for parent id " << hit->GetIparent() << ", " << map[hit->GetIparent()] << ", iHit " << iHit << endl;
251 hit->SetIparent(map[hit->GetIparent()]);
252 if (map[hit->GetPrimary()]==-99)
253 cout << "Remapping, found -99 for primary id " << hit->GetPrimary() << ", " << map[hit->GetPrimary()] << ", iHit " << iHit << endl;
254 hit->SetPrimary(map[hit->GetPrimary()]);
259 //___________________________________________________________
260 void AliEMCALv1::FinishPrimary() {