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7587f5a5 | 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 | //_________________________________________________________________________ | |
17 | // Manager class for PHOS version SUBATECH | |
18 | //*-- Author : Odd Harald Oddland & Gines Martinez Feb-2000 | |
19 | // The main goal of this version of AliPHOS is to calculted the | |
20 | // induced charged in the PIN diode, taking into account light | |
21 | // tracking in the PbWO4 crystal, induced signal in the | |
22 | // PIN due to MIPS particle and electronic noise. | |
23 | // In this respect, this class derived from AliPHOSv0 and | |
24 | // only the StepManager function has been "surcharged" | |
25 | ////////////////////////////////////////////////////////////////////////////// | |
26 | ||
27 | // --- ROOT system --- | |
28 | #include "TRandom.h" | |
29 | ||
30 | // --- Standard library --- | |
31 | ||
32 | #include <cstdio> | |
33 | #include <cstring> | |
34 | #include <cstdlib> | |
35 | #include <strstream> | |
36 | #include <cassert> | |
37 | ||
38 | // --- AliRoot header files --- | |
39 | ||
40 | #include "AliPHOSv1.h" | |
41 | #include "AliPHOSHit.h" | |
42 | #include "AliPHOSDigit.h" | |
43 | #include "AliRun.h" | |
44 | #include "AliConst.h" | |
45 | ||
46 | ClassImp(AliPHOSv1) | |
47 | ||
48 | //____________________________________________________________________________ | |
49 | AliPHOSv1::AliPHOSv1() : | |
50 | AliPHOSv0() | |
51 | { | |
52 | } | |
53 | ||
54 | //____________________________________________________________________________ | |
55 | AliPHOSv1::AliPHOSv1(const char *name, const char *title): | |
56 | AliPHOSv0(name,title) | |
57 | { | |
58 | fLightYieldMean = 700000. ; | |
59 | fIntrinsicPINEfficiency = 0.1875 ; | |
60 | fLightYieldAttenuation = 0.0045 ; | |
61 | fRecalibrationFactor = 6.2 / fLightYieldMean ; | |
4dea8d96 | 62 | fElectronsPerGeV = 2.77e+8 ; |
7587f5a5 | 63 | } |
64 | //____________________________________________________________________________ | |
65 | AliPHOSv1::AliPHOSv1(AliPHOSReconstructioner * Reconstructioner, const char *name, const char *title): | |
66 | AliPHOSv0(Reconstructioner,name,title) | |
67 | { | |
68 | fLightYieldMean = 700000.; | |
69 | fIntrinsicPINEfficiency = 0.1875 ; | |
70 | fLightYieldAttenuation = 0.0045 ; | |
71 | fRecalibrationFactor = 6.2 / fLightYieldMean ; | |
4dea8d96 | 72 | fElectronsPerGeV = 2.77e+8 ; // Odd Harald work |
7587f5a5 | 73 | } |
74 | ||
75 | //____________________________________________________________________________ | |
76 | AliPHOSv1::~AliPHOSv1() | |
77 | { | |
78 | ||
79 | } | |
80 | ||
81 | //____________________________________________________________________________ | |
82 | ||
83 | ||
84 | ||
85 | ||
86 | ||
87 | ||
88 | //____________________________________________________________________________ | |
89 | void AliPHOSv1::StepManager(void) | |
90 | { | |
91 | Int_t relid[4] ; // (box, layer, row, column) indices | |
92 | Float_t xyze[4] ; // position wrt MRS and energy deposited | |
93 | TLorentzVector pos ; | |
94 | Int_t copy; | |
95 | Float_t lightyield ; // Light Yield per GeV | |
96 | Float_t nElectrons ; // Number of electrons in the PIN diode | |
97 | TString name = fGeom->GetName() ; | |
98 | Float_t global[3] ; | |
99 | Float_t local[3] ; | |
100 | Float_t lostenergy ; | |
101 | ||
102 | if ( name == "GPS2" ) { // the CPV is a PPSD | |
103 | if( gMC->CurrentVolID(copy) == gMC->VolId("GCEL") ) | |
104 | // if( strcmp ( gMC->CurrentVolName(), "GCEL" ) == 0 ) // We are inside a gas cell | |
105 | { | |
106 | gMC->TrackPosition(pos) ; | |
107 | xyze[0] = pos[0] ; | |
108 | xyze[1] = pos[1] ; | |
109 | xyze[2] = pos[2] ; | |
110 | xyze[3] = gMC->Edep() ; | |
111 | ||
112 | ||
113 | if ( xyze[3] != 0 ) { // there is deposited energy | |
114 | gMC->CurrentVolOffID(5, relid[0]) ; // get the PHOS Module number | |
115 | gMC->CurrentVolOffID(3, relid[1]) ; // get the Micromegas Module number | |
116 | // 1-> Geom->GetNumberOfModulesPhi() * fGeom->GetNumberOfModulesZ() upper | |
117 | // > fGeom->GetNumberOfModulesPhi() * fGeom->GetNumberOfModulesZ() lower | |
118 | gMC->CurrentVolOffID(1, relid[2]) ; // get the row number of the cell | |
119 | gMC->CurrentVolID(relid[3]) ; // get the column number | |
120 | ||
121 | // get the absolute Id number | |
122 | ||
123 | Int_t absid ; | |
124 | fGeom->RelToAbsNumbering(relid,absid) ; | |
125 | ||
126 | ||
127 | AddHit(gAlice->CurrentTrack(), absid, xyze ); | |
128 | ||
129 | } // there is deposited energy | |
130 | } // We are inside the gas of the CPV | |
131 | } // GPS2 configuration | |
132 | ||
133 | if(gMC->CurrentVolID(copy) == gMC->VolId("PXTL") ) | |
134 | // if( strcmp ( gMC->CurrentVolName(), "PXTL" ) == 0 ) { // We are inside a PWO crystal | |
135 | { | |
136 | gMC->TrackPosition(pos) ; | |
137 | xyze[0] = pos[0] ; | |
138 | xyze[1] = pos[1] ; | |
139 | xyze[2] = pos[2] ; | |
140 | lostenergy = gMC->Edep() ; | |
a333c916 | 141 | xyze[3] = gMC->Edep() ; |
7587f5a5 | 142 | |
143 | global[0] = pos[0] ; | |
144 | global[1] = pos[1] ; | |
145 | global[2] = pos[2] ; | |
146 | ||
147 | if ( xyze[3] != 0 ) { | |
148 | gMC->CurrentVolOffID(10, relid[0]) ; // get the PHOS module number ; | |
149 | relid[1] = 0 ; // means PW04 | |
150 | gMC->CurrentVolOffID(4, relid[2]) ; // get the row number inside the module | |
151 | gMC->CurrentVolOffID(3, relid[3]) ; // get the cell number inside the module | |
152 | ||
153 | // get the absolute Id number | |
154 | ||
155 | Int_t absid ; | |
156 | fGeom->RelToAbsNumbering(relid,absid) ; | |
157 | gMC->Gmtod(global, local, 1) ; | |
158 | ||
159 | // calculating number of electrons in the PIN diode asociated to this hit | |
160 | lightyield = gRandom->Poisson(fLightYieldMean) ; | |
161 | nElectrons = lostenergy * lightyield * fIntrinsicPINEfficiency * | |
162 | exp(-fLightYieldAttenuation * (local[1]+fGeom->GetCrystalSize(1)/2.0 ) ) ; | |
163 | ||
164 | xyze[3] = nElectrons * fRecalibrationFactor ; | |
165 | // add current hit to the hit list | |
166 | AddHit(gAlice->CurrentTrack(), absid, xyze); | |
167 | ||
168 | } // there is deposited energy | |
169 | } // we are inside a PHOS Xtal | |
a333c916 | 170 | |
171 | if(gMC->CurrentVolID(copy) == gMC->VolId("PPIN") ) // We are inside de PIN diode | |
172 | { | |
173 | gMC->TrackPosition(pos) ; | |
174 | xyze[0] = pos[0] ; | |
175 | xyze[1] = pos[1] ; | |
176 | xyze[2] = pos[2] ; | |
177 | lostenergy = gMC->Edep() ; | |
178 | xyze[3] = gMC->Edep() ; | |
179 | ||
180 | if ( xyze[3] != 0 ) { | |
181 | gMC->CurrentVolOffID(11, relid[0]) ; // get the PHOS module number ; | |
182 | relid[1] = 0 ; // means PW04and PIN | |
183 | gMC->CurrentVolOffID(5, relid[2]) ; // get the row number inside the module | |
184 | gMC->CurrentVolOffID(4, relid[3]) ; // get the cell number inside the module | |
185 | ||
186 | // get the absolute Id number | |
187 | ||
188 | Int_t absid ; | |
189 | fGeom->RelToAbsNumbering(relid,absid) ; | |
190 | ||
191 | // calculating number of electrons in the PIN diode asociated to this hit | |
192 | nElectrons = lostenergy * fElectronsPerGeV ; | |
193 | xyze[3] = nElectrons * fRecalibrationFactor ; | |
194 | ||
195 | // add current hit to the hit list | |
196 | AddHit(gAlice->CurrentTrack(), absid, xyze); | |
197 | //printf("PIN volume is %d, %d, %d, %d \n",relid[0],relid[1],relid[2],relid[3]); | |
198 | //printf("Lost energy in the PIN is %f \n",lostenergy) ; | |
199 | } // there is deposited energy | |
200 | } // we are inside a PHOS XtalPHOS PIN diode | |
7587f5a5 | 201 | } |
202 |