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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 | //_________________________________________________________________________ | |
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 | //*-- | |
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. | |
27 | ||
28 | // 15/02/2002 .... Yves Schutz | |
29 | // 1. fSamplingFraction and fLayerToPreshowerRatio have been removed | |
30 | // 2. Timing signal is collected and added to hit | |
31 | ||
32 | // --- ROOT system --- | |
33 | #include "TParticle.h" | |
34 | #include "TVirtualMC.h" | |
35 | ||
36 | // --- Standard library --- | |
37 | ||
38 | // --- AliRoot header files --- | |
39 | #include "AliEMCALv1.h" | |
40 | #include "AliEMCALHit.h" | |
41 | #include "AliEMCALGeometry.h" | |
42 | #include "AliRun.h" | |
43 | #include "AliMC.h" | |
44 | ||
45 | ClassImp(AliEMCALv1) | |
46 | ||
47 | ||
48 | //______________________________________________________________________ | |
49 | AliEMCALv1::AliEMCALv1():AliEMCALv0(){ | |
50 | // ctor | |
51 | ||
52 | } | |
53 | ||
54 | //______________________________________________________________________ | |
55 | AliEMCALv1::AliEMCALv1(const char *name, const char *title): | |
56 | AliEMCALv0(name,title){ | |
57 | // Standard Creator. | |
58 | ||
59 | fHits= new TClonesArray("AliEMCALHit",1000); | |
60 | gAlice->GetMCApp()->AddHitList(fHits); | |
61 | ||
62 | fNhits = 0; | |
63 | fIshunt = 2; // All hits are associated with particles entering the calorimeter | |
64 | } | |
65 | ||
66 | //______________________________________________________________________ | |
67 | AliEMCALv1::~AliEMCALv1(){ | |
68 | // dtor | |
69 | ||
70 | if ( fHits) { | |
71 | fHits->Delete(); | |
72 | delete fHits; | |
73 | fHits = 0; | |
74 | } | |
75 | } | |
76 | //______________________________________________________________________ | |
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){ | |
79 | // Add a hit to the hit list. | |
80 | // An EMCAL hit is the sum of all hits in a tower section | |
81 | // originating from the same entering particle | |
82 | Int_t hitCounter; | |
83 | ||
84 | AliEMCALHit *newHit; | |
85 | AliEMCALHit *curHit; | |
86 | Bool_t deja = kFALSE; | |
87 | ||
88 | newHit = new AliEMCALHit(shunt, primary, tracknumber, iparent, ienergy, id, hits, p); | |
89 | for ( hitCounter = fNhits-1; hitCounter >= 0 && !deja; hitCounter-- ) { | |
90 | curHit = (AliEMCALHit*) (*fHits)[hitCounter]; | |
91 | // We add hits with the same tracknumber, while GEANT treats | |
92 | // primaries succesively | |
93 | if(curHit->GetPrimary() != primary) | |
94 | break; | |
95 | if( *curHit == *newHit ) { | |
96 | *curHit = *curHit + *newHit; | |
97 | deja = kTRUE; | |
98 | } // end if | |
99 | } // end for hitCounter | |
100 | ||
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){ | |
110 | // Accumulates hits as long as the track stays in a tower | |
111 | ||
112 | Int_t id[2]; // (phi, Eta) indices | |
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. | |
118 | Int_t tracknumber = gAlice->GetMCApp()->GetCurrentTrackNumber(); | |
119 | Int_t primary = 0; | |
120 | static Int_t iparent = 0; | |
121 | static Float_t ienergy = 0; | |
122 | Int_t copy = 0; | |
123 | ||
124 | AliEMCALGeometry * geom = GetGeometry() ; | |
125 | ||
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]) | |
132 | < (geom->GetEnvelop(0)+geom->GetGap2Active()+1.5 )*(geom->GetEnvelop(0)+geom->GetGap2Active()+1.5 ) ) { | |
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 | |
140 | part = gAlice->GetMCApp()->Particle(parent) ; | |
141 | part->SetBit(kKeepBit); | |
142 | parent = part->GetFirstMother() ; | |
143 | } | |
144 | } | |
145 | } | |
146 | if(gMC->CurrentVolID(copy) == gMC->VolId("XPHI") ) { // We are in a Scintillator Layer | |
147 | ||
148 | Float_t depositedEnergy ; | |
149 | ||
150 | if( (depositedEnergy = gMC->Edep()) > 0.){// Track is inside a scintillator and deposits some energy | |
151 | ||
152 | // use sampling fraction to get original energy --HG | |
153 | depositedEnergy = depositedEnergy * geom->GetSampling(); | |
154 | ||
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 | |
169 | ||
170 | Int_t tower = (id[0]-1) % geom->GetNZ() + 1 + (id[1] - 1) * geom->GetNZ() ; | |
171 | Int_t layer = static_cast<Int_t>((id[0]-1)/(geom->GetNZ())) + 1 ; | |
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 | ||
177 | ||
178 | Float_t lightYield = depositedEnergy ; | |
179 | xyzte[4] = lightYield ; | |
180 | ||
181 | primary = gAlice->GetMCApp()->GetPrimary(tracknumber); | |
182 | ||
183 | if (gDebug == 2) | |
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]) ; | |
185 | ||
186 | AddHit(fIshunt, primary,tracknumber, iparent, ienergy, absid, xyzte, pmom); | |
187 | } // there is deposited energy | |
188 | } | |
189 | } |