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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 | //_________________________________________________________________________ | |
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 | ||
fceb09ed | 26 | // This Class not stores information on all particles prior to EMCAL entry - in order to facilitate analysis. |
27 | // This is done by setting fIShunt =2, and flagging all parents of particles entering the EMCAL. | |
28 | ||
b13bbe81 | 29 | |
30 | // --- ROOT system --- | |
31 | #include "TPGON.h" | |
32 | #include "TTUBS.h" | |
33 | #include "TNode.h" | |
34 | #include "TRandom.h" | |
35 | #include "TTree.h" | |
36 | #include "TGeometry.h" | |
fceb09ed | 37 | #include "TParticle.h" |
b13bbe81 | 38 | |
39 | // --- Standard library --- | |
40 | ||
41 | #include <stdio.h> | |
42 | #include <string.h> | |
43 | #include <stdlib.h> | |
44 | #include <strstream.h> | |
45 | #include <iostream.h> | |
46 | #include <math.h> | |
47 | // --- AliRoot header files --- | |
48 | ||
49 | #include "AliEMCALv1.h" | |
50 | #include "AliEMCALHit.h" | |
51 | #include "AliEMCALGeometry.h" | |
52 | #include "AliConst.h" | |
53 | #include "AliRun.h" | |
54 | #include "AliMC.h" | |
55 | ||
56 | ClassImp(AliEMCALv1) | |
57 | ||
58 | ||
59 | //______________________________________________________________________ | |
60 | AliEMCALv1::AliEMCALv1():AliEMCALv0(){ | |
61 | // ctor | |
62 | } | |
63 | //______________________________________________________________________ | |
64 | AliEMCALv1::AliEMCALv1(const char *name, const char *title): | |
65 | AliEMCALv0(name,title){ | |
66 | // Standard Creator. | |
67 | ||
68 | fHits= new TClonesArray("AliEMCALHit",1000); | |
69 | gAlice->AddHitList(fHits); | |
70 | ||
71 | fNhits = 0; | |
ffa6d63b | 72 | fSamplingFraction = 12.9 ; |
d75bea67 | 73 | fLayerToPreshowerRatio = 5.0/6.0; |
fceb09ed | 74 | fIshunt = 2; // All hits are associated with particles entering the calorimeter |
b13bbe81 | 75 | } |
76 | //______________________________________________________________________ | |
77 | AliEMCALv1::~AliEMCALv1(){ | |
78 | // dtor | |
79 | ||
80 | if ( fHits) { | |
81 | fHits->Delete(); | |
82 | delete fHits; | |
83 | fHits = 0; | |
84 | } | |
85 | } | |
86 | //______________________________________________________________________ | |
61e0abb5 | 87 | void AliEMCALv1::AddHit(Int_t shunt, Int_t primary, Int_t tracknumber, Int_t iparent, Float_t ienergy, |
88 | Int_t id, Float_t * hits,Float_t * p){ | |
b13bbe81 | 89 | // Add a hit to the hit list. |
ffa6d63b | 90 | // An EMCAL hit is the sum of all hits in a single segment |
91 | // originating from the same enterring particle | |
b13bbe81 | 92 | Int_t hitCounter; |
93 | ||
94 | AliEMCALHit *newHit; | |
95 | AliEMCALHit *curHit; | |
96 | Bool_t deja = kFALSE; | |
97 | ||
61e0abb5 | 98 | newHit = new AliEMCALHit(shunt, primary, tracknumber, iparent, ienergy, id, hits, p); |
b13bbe81 | 99 | for ( hitCounter = fNhits-1; hitCounter >= 0 && !deja; hitCounter-- ) { |
100 | curHit = (AliEMCALHit*) (*fHits)[hitCounter]; | |
61e0abb5 | 101 | // We add hits with the same tracknumber, while GEANT treats |
b13bbe81 | 102 | // primaries succesively |
103 | if(curHit->GetPrimary() != primary) break; | |
104 | if( *curHit == *newHit ) { | |
105 | *curHit = *curHit + *newHit; | |
106 | deja = kTRUE; | |
107 | } // end if | |
108 | } // end for hitCounter | |
109 | ||
110 | if ( !deja ) { | |
111 | new((*fHits)[fNhits]) AliEMCALHit(*newHit); | |
112 | fNhits++; | |
113 | } // end if | |
114 | ||
115 | delete newHit; | |
116 | } | |
117 | //______________________________________________________________________ | |
118 | void AliEMCALv1::StepManager(void){ | |
119 | // Accumulates hits as long as the track stays in a single | |
120 | // crystal or PPSD gas Cell | |
121 | Int_t id[2]; // (layer, phi, Eta) indices | |
122 | Int_t absid; | |
123 | // position wrt MRS and energy deposited | |
124 | Float_t xyze[4]={0.,0.,0.,0.}; | |
61e0abb5 | 125 | Float_t pmom[4]={0.,0.,0.,0.}; |
b13bbe81 | 126 | TLorentzVector pos; // Lorentz vector of the track current position. |
127 | TLorentzVector mom; // Lorentz vector of the track current momentum. | |
128 | Int_t tracknumber = gAlice->CurrentTrack(); | |
ffa6d63b | 129 | Int_t primary = 0; |
61e0abb5 | 130 | static Int_t iparent = 0; |
131 | static Float_t ienergy = 0; | |
ffa6d63b | 132 | Int_t copy = 0; |
61e0abb5 | 133 | |
134 | ||
ffa6d63b | 135 | if(gMC->IsTrackEntering() && (strcmp(gMC->CurrentVolName(),"XALU") == 0)) // This Particle in enterring the Calorimeter |
61e0abb5 | 136 | { |
fceb09ed | 137 | |
138 | gMC->TrackPosition(pos) ; | |
139 | xyze[0] = pos[0] ; | |
140 | xyze[1] = pos[1] ; | |
141 | xyze[2] = pos[2] ; | |
142 | ||
143 | if ( (xyze[1]*xyze[1] + xyze[2]*xyze[2] + xyze[3]*xyze[3]) < (fGeom->GetEnvelop(0)+fGeom->GetGap2Active()+1.5 )*(fGeom->GetEnvelop(0)+fGeom->GetGap2Active()+1.5 ) ) | |
144 | { | |
61e0abb5 | 145 | iparent = tracknumber; |
146 | gMC->TrackMomentum(mom); | |
147 | ienergy = mom[3]; | |
fceb09ed | 148 | TParticle * part = 0 ; |
149 | Int_t parent = iparent ; | |
150 | while ( parent != -1 ) { // <------------- flags this particle to be kept and | |
151 | //all the ancestors of this particle | |
152 | part = gAlice->Particle(parent) ; | |
153 | part->SetBit(kKeepBit); | |
154 | parent = part->GetFirstMother() ; | |
155 | } | |
156 | } | |
157 | ||
158 | ||
159 | ||
61e0abb5 | 160 | } |
ffa6d63b | 161 | if(gMC->CurrentVolID(copy) == gMC->VolId("XPHI") ) { // We are in a Scintillator Layer |
b13bbe81 | 162 | |
163 | gMC->CurrentVolOffID(1, id[0]); // get the POLY copy number; | |
164 | gMC->CurrentVolID(id[1]); // get the phi number inside the layer | |
165 | primary = gAlice->GetPrimary(tracknumber); | |
b13bbe81 | 166 | gMC->TrackPosition(pos); |
167 | gMC->TrackMomentum(mom); | |
168 | xyze[0] = pos[0]; | |
169 | xyze[1] = pos[1]; | |
170 | xyze[2] = pos[2]; | |
ffa6d63b | 171 | xyze[3] = fSamplingFraction*(gMC->Edep()); // Correct for sampling calorimeter |
61e0abb5 | 172 | pmom[0] = mom[0]; |
173 | pmom[1] = mom[1]; | |
174 | pmom[2] = mom[2]; | |
175 | pmom[3] = mom[3]; | |
176 | ||
b13bbe81 | 177 | if(xyze[3] > 0.){// Track is inside the crystal and deposits some energy |
178 | absid = (id[0]-1)*(fGeom->GetNPhi()) + id[1]; | |
ffa6d63b | 179 | if((absid/fGeom->GetNPhi()) < (2*fGeom->GetNZ())) |
d75bea67 | 180 | {xyze[3] = fLayerToPreshowerRatio*xyze[3] ;} // Preshower readout must be scaled |
ffa6d63b | 181 | AddHit(fIshunt, primary,tracknumber, iparent, ienergy, absid, xyze, pmom); |
b13bbe81 | 182 | } // there is deposited energy |
61e0abb5 | 183 | } |
b13bbe81 | 184 | } |