This update is a step in the continuous development of EMCAL.
[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 ;
b13bbe81 70 fIshunt = 1; // All hits are associated with primary particles
71}
72//______________________________________________________________________
73AliEMCALv1::~AliEMCALv1(){
74 // dtor
75
76 if ( fHits) {
77 fHits->Delete();
78 delete fHits;
79 fHits = 0;
80 }
81}
82//______________________________________________________________________
61e0abb5 83void AliEMCALv1::AddHit(Int_t shunt, Int_t primary, Int_t tracknumber, Int_t iparent, Float_t ienergy,
84 Int_t id, Float_t * hits,Float_t * p){
b13bbe81 85 // Add a hit to the hit list.
ffa6d63b 86 // An EMCAL hit is the sum of all hits in a single segment
87 // originating from the same enterring particle
b13bbe81 88 Int_t hitCounter;
89
90 AliEMCALHit *newHit;
91 AliEMCALHit *curHit;
92 Bool_t deja = kFALSE;
93
61e0abb5 94 newHit = new AliEMCALHit(shunt, primary, tracknumber, iparent, ienergy, id, hits, p);
b13bbe81 95 for ( hitCounter = fNhits-1; hitCounter >= 0 && !deja; hitCounter-- ) {
96 curHit = (AliEMCALHit*) (*fHits)[hitCounter];
61e0abb5 97 // We add hits with the same tracknumber, while GEANT treats
b13bbe81 98 // primaries succesively
99 if(curHit->GetPrimary() != primary) break;
100 if( *curHit == *newHit ) {
101 *curHit = *curHit + *newHit;
102 deja = kTRUE;
103 } // end if
104 } // end for hitCounter
105
106 if ( !deja ) {
107 new((*fHits)[fNhits]) AliEMCALHit(*newHit);
108 fNhits++;
109 } // end if
110
111 delete newHit;
112}
113//______________________________________________________________________
114void AliEMCALv1::StepManager(void){
115 // Accumulates hits as long as the track stays in a single
116 // crystal or PPSD gas Cell
117 Int_t id[2]; // (layer, phi, Eta) indices
118 Int_t absid;
119 // position wrt MRS and energy deposited
120 Float_t xyze[4]={0.,0.,0.,0.};
61e0abb5 121 Float_t pmom[4]={0.,0.,0.,0.};
b13bbe81 122 TLorentzVector pos; // Lorentz vector of the track current position.
123 TLorentzVector mom; // Lorentz vector of the track current momentum.
124 Int_t tracknumber = gAlice->CurrentTrack();
ffa6d63b 125 Int_t primary = 0;
61e0abb5 126 static Int_t iparent = 0;
127 static Float_t ienergy = 0;
ffa6d63b 128 Int_t copy = 0;
61e0abb5 129
130
ffa6d63b 131 if(gMC->IsTrackEntering() && (strcmp(gMC->CurrentVolName(),"XALU") == 0)) // This Particle in enterring the Calorimeter
61e0abb5 132 {
133 iparent = tracknumber;
134 gMC->TrackMomentum(mom);
135 ienergy = mom[3];
136}
ffa6d63b 137 if(gMC->CurrentVolID(copy) == gMC->VolId("XPHI") ) { // We are in a Scintillator Layer
b13bbe81 138
139 gMC->CurrentVolOffID(1, id[0]); // get the POLY copy number;
140 gMC->CurrentVolID(id[1]); // get the phi number inside the layer
141 primary = gAlice->GetPrimary(tracknumber);
b13bbe81 142 gMC->TrackPosition(pos);
143 gMC->TrackMomentum(mom);
144 xyze[0] = pos[0];
145 xyze[1] = pos[1];
146 xyze[2] = pos[2];
ffa6d63b 147 xyze[3] = fSamplingFraction*(gMC->Edep()); // Correct for sampling calorimeter
61e0abb5 148 pmom[0] = mom[0];
149 pmom[1] = mom[1];
150 pmom[2] = mom[2];
151 pmom[3] = mom[3];
152
b13bbe81 153 if(xyze[3] > 0.){// Track is inside the crystal and deposits some energy
154 absid = (id[0]-1)*(fGeom->GetNPhi()) + id[1];
ffa6d63b 155 if((absid/fGeom->GetNPhi()) < (2*fGeom->GetNZ()))
156 {xyze[3] = 5*xyze[3]/6 ;} // Preshower readout must be scaled
157 AddHit(fIshunt, primary,tracknumber, iparent, ienergy, absid, xyze, pmom);
b13bbe81 158 } // there is deposited energy
61e0abb5 159}
b13bbe81 160}