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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 --- | |
fceb09ed | 33 | #include "TParticle.h" |
5d12ce38 | 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 | |
45 | ClassImp(AliEMCALv1) | |
46 | ||
47 | ||
48 | //______________________________________________________________________ | |
49 | AliEMCALv1::AliEMCALv1():AliEMCALv0(){ | |
50 | // ctor | |
7b6cc0b5 | 51 | |
b13bbe81 | 52 | } |
1f4d29d2 | 53 | |
b13bbe81 | 54 | //______________________________________________________________________ |
55 | AliEMCALv1::AliEMCALv1(const char *name, const char *title): | |
56 | AliEMCALv0(name,title){ | |
57 | // Standard Creator. | |
58 | ||
59 | fHits= new TClonesArray("AliEMCALHit",1000); | |
5d12ce38 | 60 | gAlice->GetMCApp()->AddHitList(fHits); |
b13bbe81 | 61 | |
62 | fNhits = 0; | |
fceb09ed | 63 | fIshunt = 2; // All hits are associated with particles entering the calorimeter |
b13bbe81 | 64 | } |
1f4d29d2 | 65 | |
b13bbe81 | 66 | //______________________________________________________________________ |
67 | AliEMCALv1::~AliEMCALv1(){ | |
68 | // dtor | |
69 | ||
70 | if ( fHits) { | |
71 | fHits->Delete(); | |
72 | delete fHits; | |
73 | fHits = 0; | |
74 | } | |
75 | } | |
76 | //______________________________________________________________________ | |
61e0abb5 | 77 | void AliEMCALv1::AddHit(Int_t shunt, Int_t primary, Int_t tracknumber, Int_t iparent, Float_t ienergy, |
78 | Int_t id, Float_t * hits,Float_t * p){ | |
b13bbe81 | 79 | // Add a hit to the hit list. |
fdebddeb | 80 | // An EMCAL hit is the sum of all hits in a tower section |
7b6cc0b5 | 81 | // originating from the same entering particle |
b13bbe81 | 82 | Int_t hitCounter; |
83 | ||
84 | AliEMCALHit *newHit; | |
85 | AliEMCALHit *curHit; | |
86 | Bool_t deja = kFALSE; | |
87 | ||
61e0abb5 | 88 | newHit = new AliEMCALHit(shunt, primary, tracknumber, iparent, ienergy, id, hits, p); |
fdebddeb | 89 | for ( hitCounter = fNhits-1; hitCounter >= 0 && !deja; hitCounter-- ) { |
b13bbe81 | 90 | curHit = (AliEMCALHit*) (*fHits)[hitCounter]; |
61e0abb5 | 91 | // We add hits with the same tracknumber, while GEANT treats |
b13bbe81 | 92 | // primaries succesively |
7b6cc0b5 | 93 | if(curHit->GetPrimary() != primary) |
94 | break; | |
b13bbe81 | 95 | if( *curHit == *newHit ) { |
96 | *curHit = *curHit + *newHit; | |
97 | deja = kTRUE; | |
fdebddeb | 98 | } // end if |
b13bbe81 | 99 | } // end for hitCounter |
fdebddeb | 100 | |
b13bbe81 | 101 | if ( !deja ) { |
102 | new((*fHits)[fNhits]) AliEMCALHit(*newHit); | |
103 | fNhits++; | |
104 | } // end if | |
105 | ||
106 | delete newHit; | |
107 | } | |
108 | //______________________________________________________________________ | |
109 | void AliEMCALv1::StepManager(void){ | |
8ddf73e5 | 110 | // Accumulates hits as long as the track stays in a tower |
1f4d29d2 | 111 | |
fdebddeb | 112 | Int_t id[2]; // (phi, Eta) indices |
1f4d29d2 | 113 | // position wrt MRS and energy deposited |
114 | Float_t xyzte[5]={0.,0.,0.,0.,0.};// position wrt MRS, time and energy deposited | |
115 | Float_t pmom[4]={0.,0.,0.,0.}; | |
116 | TLorentzVector pos; // Lorentz vector of the track current position. | |
117 | TLorentzVector mom; // Lorentz vector of the track current momentum. | |
5d12ce38 | 118 | Int_t tracknumber = gAlice->GetMCApp()->GetCurrentTrackNumber(); |
1f4d29d2 | 119 | Int_t primary = 0; |
120 | static Int_t iparent = 0; | |
121 | static Float_t ienergy = 0; | |
122 | Int_t copy = 0; | |
1f4d29d2 | 123 | |
05a92d59 | 124 | AliEMCALGeometry * geom = GetGeometry() ; |
125 | ||
1f4d29d2 | 126 | if(gMC->IsTrackEntering() && (strcmp(gMC->CurrentVolName(),"XALU") == 0)){ // This Particle in enterring the Calorimeter |
127 | gMC->TrackPosition(pos) ; | |
128 | xyzte[0] = pos[0] ; | |
129 | xyzte[1] = pos[1] ; | |
130 | xyzte[2] = pos[2] ; | |
131 | if ( (xyzte[0]*xyzte[0] + xyzte[1]*xyzte[1]) | |
05a92d59 | 132 | < (geom->GetEnvelop(0)+geom->GetGap2Active()+1.5 )*(geom->GetEnvelop(0)+geom->GetGap2Active()+1.5 ) ) { |
1f4d29d2 | 133 | iparent = tracknumber; |
134 | gMC->TrackMomentum(mom); | |
135 | ienergy = mom[3]; | |
136 | TParticle * part = 0 ; | |
137 | Int_t parent = iparent ; | |
138 | while ( parent != -1 ) { // <------------- flags this particle to be kept and | |
139 | //all the ancestors of this particle | |
5d12ce38 | 140 | part = gAlice->GetMCApp()->Particle(parent) ; |
1f4d29d2 | 141 | part->SetBit(kKeepBit); |
142 | parent = part->GetFirstMother() ; | |
fceb09ed | 143 | } |
1f4d29d2 | 144 | } |
145 | } | |
146 | if(gMC->CurrentVolID(copy) == gMC->VolId("XPHI") ) { // We are in a Scintillator Layer | |
147 | ||
dfce7eb2 | 148 | Float_t depositedEnergy ; |
61e0abb5 | 149 | |
dfce7eb2 | 150 | if( (depositedEnergy = gMC->Edep()) > 0.){// Track is inside a scintillator and deposits some energy |
7b6cc0b5 | 151 | |
7d74eaca | 152 | // use sampling fraction to get original energy --HG |
153 | depositedEnergy = depositedEnergy * geom->GetSampling(); | |
154 | ||
dfce7eb2 | 155 | gMC->TrackPosition(pos); |
156 | xyzte[0] = pos[0]; | |
157 | xyzte[1] = pos[1]; | |
158 | xyzte[2] = pos[2]; | |
159 | xyzte[3] = gMC->TrackTime() ; | |
160 | ||
161 | gMC->TrackMomentum(mom); | |
162 | pmom[0] = mom[0]; | |
163 | pmom[1] = mom[1]; | |
164 | pmom[2] = mom[2]; | |
165 | pmom[3] = mom[3]; | |
166 | ||
167 | gMC->CurrentVolOffID(1, id[0]); // get the POLY copy number; | |
168 | gMC->CurrentVolID(id[1]); // get the phi number inside the layer | |
dfce7eb2 | 169 | |
de56e4f9 | 170 | Int_t tower = (id[0]-1) % geom->GetNZ() + 1 + (id[1] - 1) * geom->GetNZ() ; |
7b6cc0b5 | 171 | Int_t layer = static_cast<Int_t>((id[0]-1)/(geom->GetNZ())) + 1 ; |
fdebddeb | 172 | Int_t absid = tower; |
173 | Int_t nlayers = geom->GetNECLayers(); | |
174 | if ((layer > nlayers)||(layer<1)) | |
175 | Fatal("StepManager", "Wrong calculation of layer number: layer = %d > %d\n", layer, nlayers) ; | |
176 | ||
7b6cc0b5 | 177 | |
178 | Float_t lightYield = depositedEnergy ; | |
7b6cc0b5 | 179 | xyzte[4] = lightYield ; |
dfce7eb2 | 180 | |
5d12ce38 | 181 | primary = gAlice->GetMCApp()->GetPrimary(tracknumber); |
7b6cc0b5 | 182 | |
183 | if (gDebug == 2) | |
fdebddeb | 184 | 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 | 185 | |
fdebddeb | 186 | AddHit(fIshunt, primary,tracknumber, iparent, ienergy, absid, xyzte, pmom); |
b13bbe81 | 187 | } // there is deposited energy |
1f4d29d2 | 188 | } |
b13bbe81 | 189 | } |