Reduced the number of daughter volumes (Sahal)
[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//_________________________________________________________________________
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
26
27// --- ROOT system ---
28#include "TPGON.h"
29#include "TTUBS.h"
30#include "TNode.h"
31#include "TRandom.h"
32#include "TTree.h"
33#include "TGeometry.h"
34
35
36// --- Standard library ---
37
38#include <stdio.h>
39#include <string.h>
40#include <stdlib.h>
41#include <strstream.h>
42#include <iostream.h>
43#include <math.h>
44// --- AliRoot header files ---
45
46#include "AliEMCALv1.h"
47#include "AliEMCALHit.h"
48#include "AliEMCALGeometry.h"
49#include "AliConst.h"
50#include "AliRun.h"
51#include "AliMC.h"
52
53ClassImp(AliEMCALv1)
54
55
56//______________________________________________________________________
57AliEMCALv1::AliEMCALv1():AliEMCALv0(){
58 // ctor
59}
60//______________________________________________________________________
61AliEMCALv1::AliEMCALv1(const char *name, const char *title):
62 AliEMCALv0(name,title){
63 // Standard Creator.
64
65 fHits= new TClonesArray("AliEMCALHit",1000);
66 gAlice->AddHitList(fHits);
67
68 fNhits = 0;
ffa6d63b 69 fSamplingFraction = 12.9 ;
d75bea67 70 fLayerToPreshowerRatio = 5.0/6.0;
b13bbe81 71 fIshunt = 1; // All hits are associated with primary particles
72}
73//______________________________________________________________________
74AliEMCALv1::~AliEMCALv1(){
75 // dtor
76
77 if ( fHits) {
78 fHits->Delete();
79 delete fHits;
80 fHits = 0;
81 }
82}
83//______________________________________________________________________
61e0abb5 84void AliEMCALv1::AddHit(Int_t shunt, Int_t primary, Int_t tracknumber, Int_t iparent, Float_t ienergy,
85 Int_t id, Float_t * hits,Float_t * p){
b13bbe81 86 // Add a hit to the hit list.
ffa6d63b 87 // An EMCAL hit is the sum of all hits in a single segment
88 // originating from the same enterring particle
b13bbe81 89 Int_t hitCounter;
90
91 AliEMCALHit *newHit;
92 AliEMCALHit *curHit;
93 Bool_t deja = kFALSE;
94
61e0abb5 95 newHit = new AliEMCALHit(shunt, primary, tracknumber, iparent, ienergy, id, hits, p);
b13bbe81 96 for ( hitCounter = fNhits-1; hitCounter >= 0 && !deja; hitCounter-- ) {
97 curHit = (AliEMCALHit*) (*fHits)[hitCounter];
61e0abb5 98 // We add hits with the same tracknumber, while GEANT treats
b13bbe81 99 // primaries succesively
100 if(curHit->GetPrimary() != primary) break;
101 if( *curHit == *newHit ) {
102 *curHit = *curHit + *newHit;
103 deja = kTRUE;
104 } // end if
105 } // end for hitCounter
106
107 if ( !deja ) {
108 new((*fHits)[fNhits]) AliEMCALHit(*newHit);
109 fNhits++;
110 } // end if
111
112 delete newHit;
113}
114//______________________________________________________________________
115void AliEMCALv1::StepManager(void){
116 // Accumulates hits as long as the track stays in a single
117 // crystal or PPSD gas Cell
118 Int_t id[2]; // (layer, phi, Eta) indices
119 Int_t absid;
120 // position wrt MRS and energy deposited
121 Float_t xyze[4]={0.,0.,0.,0.};
61e0abb5 122 Float_t pmom[4]={0.,0.,0.,0.};
b13bbe81 123 TLorentzVector pos; // Lorentz vector of the track current position.
124 TLorentzVector mom; // Lorentz vector of the track current momentum.
125 Int_t tracknumber = gAlice->CurrentTrack();
ffa6d63b 126 Int_t primary = 0;
61e0abb5 127 static Int_t iparent = 0;
128 static Float_t ienergy = 0;
ffa6d63b 129 Int_t copy = 0;
61e0abb5 130
131
ffa6d63b 132 if(gMC->IsTrackEntering() && (strcmp(gMC->CurrentVolName(),"XALU") == 0)) // This Particle in enterring the Calorimeter
61e0abb5 133 {
134 iparent = tracknumber;
135 gMC->TrackMomentum(mom);
136 ienergy = mom[3];
137}
ffa6d63b 138 if(gMC->CurrentVolID(copy) == gMC->VolId("XPHI") ) { // We are in a Scintillator Layer
b13bbe81 139
140 gMC->CurrentVolOffID(1, id[0]); // get the POLY copy number;
141 gMC->CurrentVolID(id[1]); // get the phi number inside the layer
142 primary = gAlice->GetPrimary(tracknumber);
b13bbe81 143 gMC->TrackPosition(pos);
144 gMC->TrackMomentum(mom);
145 xyze[0] = pos[0];
146 xyze[1] = pos[1];
147 xyze[2] = pos[2];
ffa6d63b 148 xyze[3] = fSamplingFraction*(gMC->Edep()); // Correct for sampling calorimeter
61e0abb5 149 pmom[0] = mom[0];
150 pmom[1] = mom[1];
151 pmom[2] = mom[2];
152 pmom[3] = mom[3];
153
b13bbe81 154 if(xyze[3] > 0.){// Track is inside the crystal and deposits some energy
155 absid = (id[0]-1)*(fGeom->GetNPhi()) + id[1];
ffa6d63b 156 if((absid/fGeom->GetNPhi()) < (2*fGeom->GetNZ()))
d75bea67 157 {xyze[3] = fLayerToPreshowerRatio*xyze[3] ;} // Preshower readout must be scaled
ffa6d63b 158 AddHit(fIshunt, primary,tracknumber, iparent, ienergy, absid, xyze, pmom);
b13bbe81 159 } // there is deposited energy
61e0abb5 160}
b13bbe81 161}