- added the PHOS library to the autotools configuration
[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 ---
cde6a23d 33#include <TParticle.h>
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
45ClassImp(AliEMCALv1)
46
47
48//______________________________________________________________________
ab37d09c 49AliEMCALv1::AliEMCALv1():AliEMCALv0(), fCurPrimary(-1), fCurParent(-1), fCurTrack(-1){
b13bbe81 50 // ctor
51}
1f4d29d2 52
b13bbe81 53//______________________________________________________________________
54AliEMCALv1::AliEMCALv1(const char *name, const char *title):
ab37d09c 55 AliEMCALv0(name,title), fCurPrimary(-1), fCurParent(-1), fCurTrack(-1) {
b13bbe81 56 // Standard Creator.
57
58 fHits= new TClonesArray("AliEMCALHit",1000);
1963b290 59 // gAlice->GetMCApp()->AddHitList(fHits); // 20-dec-04 - advice of Andreas
b13bbe81 60
61 fNhits = 0;
fceb09ed 62 fIshunt = 2; // All hits are associated with particles entering the calorimeter
9b358506 63 fTimeCut = 30e-09;
b13bbe81 64}
1f4d29d2 65
b13bbe81 66//______________________________________________________________________
0a4cb131 67AliEMCALv1::AliEMCALv1(const AliEMCALv1 & emcal):AliEMCALv0(emcal)
68{
69 //copy ctor
70 fCurPrimary = emcal.fCurPrimary;
71 fCurParent = emcal.fCurParent;
72 fCurTrack = emcal.fCurTrack;
73 fTimeCut = emcal.fTimeCut;
74
75}
76
77//______________________________________________________________________
b13bbe81 78AliEMCALv1::~AliEMCALv1(){
79 // dtor
80
81 if ( fHits) {
82 fHits->Delete();
83 delete fHits;
84 fHits = 0;
85 }
86}
ab37d09c 87
b13bbe81 88//______________________________________________________________________
61e0abb5 89void AliEMCALv1::AddHit(Int_t shunt, Int_t primary, Int_t tracknumber, Int_t iparent, Float_t ienergy,
90 Int_t id, Float_t * hits,Float_t * p){
b13bbe81 91 // Add a hit to the hit list.
fdebddeb 92 // An EMCAL hit is the sum of all hits in a tower section
7b6cc0b5 93 // originating from the same entering particle
b13bbe81 94 Int_t hitCounter;
95
96 AliEMCALHit *newHit;
97 AliEMCALHit *curHit;
98 Bool_t deja = kFALSE;
99
61e0abb5 100 newHit = new AliEMCALHit(shunt, primary, tracknumber, iparent, ienergy, id, hits, p);
fdebddeb 101 for ( hitCounter = fNhits-1; hitCounter >= 0 && !deja; hitCounter-- ) {
b13bbe81 102 curHit = (AliEMCALHit*) (*fHits)[hitCounter];
61e0abb5 103 // We add hits with the same tracknumber, while GEANT treats
b13bbe81 104 // primaries succesively
7b6cc0b5 105 if(curHit->GetPrimary() != primary)
106 break;
b13bbe81 107 if( *curHit == *newHit ) {
108 *curHit = *curHit + *newHit;
109 deja = kTRUE;
fdebddeb 110 } // end if
b13bbe81 111 } // end for hitCounter
fdebddeb 112
b13bbe81 113 if ( !deja ) {
114 new((*fHits)[fNhits]) AliEMCALHit(*newHit);
115 fNhits++;
116 } // end if
1963b290 117
b13bbe81 118 delete newHit;
119}
120//______________________________________________________________________
121void AliEMCALv1::StepManager(void){
8ddf73e5 122 // Accumulates hits as long as the track stays in a tower
1f4d29d2 123
fdebddeb 124 Int_t id[2]; // (phi, Eta) indices
1f4d29d2 125 // position wrt MRS and energy deposited
126 Float_t xyzte[5]={0.,0.,0.,0.,0.};// position wrt MRS, time and energy deposited
127 Float_t pmom[4]={0.,0.,0.,0.};
128 TLorentzVector pos; // Lorentz vector of the track current position.
129 TLorentzVector mom; // Lorentz vector of the track current momentum.
5d12ce38 130 Int_t tracknumber = gAlice->GetMCApp()->GetCurrentTrackNumber();
1f4d29d2 131 static Float_t ienergy = 0;
132 Int_t copy = 0;
1f4d29d2 133
05a92d59 134 AliEMCALGeometry * geom = GetGeometry() ;
135
d6fb41ac 136 static Int_t idXPHI = gMC->VolId("XPHI");
137 if(gMC->CurrentVolID(copy) == idXPHI ) { // We are in a Scintillator Layer
dfce7eb2 138 Float_t depositedEnergy ;
61e0abb5 139
9b358506 140 if( ((depositedEnergy = gMC->Edep()) > 0.) && (gMC->TrackTime() < fTimeCut)){// Track is inside a scintillator and deposits some energy
ab37d09c 141 if (fCurPrimary==-1)
142 fCurPrimary=gAlice->GetMCApp()->GetPrimary(tracknumber);
143
144 if (fCurParent==-1 || tracknumber != fCurTrack) {
145 // Check parentage
146 Int_t parent=tracknumber;
147 if (fCurParent != -1) {
148 while (parent != fCurParent && parent != -1) {
149 TParticle *part=gAlice->GetMCApp()->Particle(parent);
150 parent=part->GetFirstMother();
151 }
152 }
153 if (fCurParent==-1 || parent==-1) {
154 Int_t parent=tracknumber;
155 TParticle *part=gAlice->GetMCApp()->Particle(parent);
156 while (parent != -1 && geom->IsInEMCAL(part->Vx(),part->Vy(),part->Vz())) {
157 parent=part->GetFirstMother();
158 if (parent!=-1)
159 part=gAlice->GetMCApp()->Particle(parent);
160 }
161 fCurParent=parent;
162 if (fCurParent==-1)
163 Error("StepManager","Cannot find parent");
164 else {
165 TParticle *part=gAlice->GetMCApp()->Particle(fCurParent);
166 ienergy = part->Energy();
167 }
168 while (parent != -1) {
169 part=gAlice->GetMCApp()->Particle(parent);
170 part->SetBit(kKeepBit);
171 parent=part->GetFirstMother();
172 }
173 }
174 fCurTrack=tracknumber;
175 }
dfce7eb2 176 gMC->TrackPosition(pos);
177 xyzte[0] = pos[0];
178 xyzte[1] = pos[1];
179 xyzte[2] = pos[2];
180 xyzte[3] = gMC->TrackTime() ;
181
182 gMC->TrackMomentum(mom);
183 pmom[0] = mom[0];
184 pmom[1] = mom[1];
185 pmom[2] = mom[2];
186 pmom[3] = mom[3];
187
188 gMC->CurrentVolOffID(1, id[0]); // get the POLY copy number;
189 gMC->CurrentVolID(id[1]); // get the phi number inside the layer
dfce7eb2 190
de56e4f9 191 Int_t tower = (id[0]-1) % geom->GetNZ() + 1 + (id[1] - 1) * geom->GetNZ() ;
7b6cc0b5 192 Int_t layer = static_cast<Int_t>((id[0]-1)/(geom->GetNZ())) + 1 ;
fdebddeb 193 Int_t absid = tower;
194 Int_t nlayers = geom->GetNECLayers();
195 if ((layer > nlayers)||(layer<1))
196 Fatal("StepManager", "Wrong calculation of layer number: layer = %d > %d\n", layer, nlayers) ;
197
7b6cc0b5 198 Float_t lightYield = depositedEnergy ;
ab37d09c 199 // Apply Birk's law (copied from G3BIRK)
200
201 if (gMC->TrackCharge()!=0) { // Check
cde6a23d 202 Float_t birkC1Mod = 0;
ab37d09c 203 if (fBirkC0==1){ // Apply correction for higher charge states
41289e86 204 if (TMath::Abs(gMC->TrackCharge())>=2)
cde6a23d 205 birkC1Mod=fBirkC1*7.2/12.6;
ab37d09c 206 else
cde6a23d 207 birkC1Mod=fBirkC1;
ab37d09c 208 }
209 Float_t dedxcm;
210 if (gMC->TrackStep()>0)
211 dedxcm=1000.*gMC->Edep()/gMC->TrackStep();
212 else
213 dedxcm=0;
cde6a23d 214 lightYield=lightYield/(1.+birkC1Mod*dedxcm+fBirkC2*dedxcm*dedxcm);
ab37d09c 215 }
7b6cc0b5 216
ab37d09c 217 // use sampling fraction to get original energy --HG
218 xyzte[4] = lightYield * geom->GetSampling();
219
7b6cc0b5 220 if (gDebug == 2)
fdebddeb 221 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 222
ab37d09c 223 AddHit(fIshunt, fCurPrimary,tracknumber, fCurParent, ienergy, absid, xyzte, pmom);
b13bbe81 224 } // there is deposited energy
1f4d29d2 225 }
b13bbe81 226}
ab37d09c 227
228void AliEMCALv1::RemapTrackHitIDs(Int_t *map) {
229 // remap track index numbers for primary and parent indices
230 // (Called by AliStack::PurifyKine)
231 if (Hits()==0)
232 return;
cde6a23d 233 TIter hitIter(Hits());
234 Int_t iHit=0;
235 while (AliEMCALHit *hit=dynamic_cast<AliEMCALHit*>(hitIter()) ) {
ab37d09c 236 if (map[hit->GetIparent()]==-99)
cde6a23d 237 cout << "Remapping, found -99 for parent id " << hit->GetIparent() << ", " << map[hit->GetIparent()] << ", iHit " << iHit << endl;
ab37d09c 238 hit->SetIparent(map[hit->GetIparent()]);
239 if (map[hit->GetPrimary()]==-99)
cde6a23d 240 cout << "Remapping, found -99 for primary id " << hit->GetPrimary() << ", " << map[hit->GetPrimary()] << ", iHit " << iHit << endl;
ab37d09c 241 hit->SetPrimary(map[hit->GetPrimary()]);
cde6a23d 242 iHit++;
ab37d09c 243 }
244}
245
246void AliEMCALv1::FinishPrimary() {
cde6a23d 247 // finish primary
ab37d09c 248 fCurPrimary=-1;
249 fCurParent=-1;
250 fCurTrack=-1;
251}