1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
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8 * documentation strictly for non-commercial purposes is hereby granted *
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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 **************************************************************************/
18 //_________________________________________________________________________
19 // Base Class for EMCAL description:
20 // This class contains material definitions
21 // for the EMCAL - It does not place the detector in Alice
22 //*-- Author: Yves Schutz (SUBATECH)
24 //*-- Additional Contributions: Sahal Yacoob (LBNL/UCT)
26 //////////////////////////////////////////////////////////////////////////////
28 // --- ROOT system ---
32 #include <TVirtualMC.h>
34 // --- Standard library ---
36 // --- AliRoot header files ---
38 #include "AliESDCaloTrack.h"
41 #include "AliEMCALGetter.h"
43 #include "AliEMCALSDigitizer.h"
44 #include "AliEMCALDigitizer.h"
45 #include "AliEMCALReconstructioner.h"
48 //____________________________________________________________________________
49 AliEMCAL::AliEMCAL():AliDetector()
56 //____________________________________________________________________________
57 AliEMCAL::AliEMCAL(const char* name, const char* title): AliDetector(name,title)
59 // ctor : title is used to identify the layout
63 //____________________________________________________________________________
69 //____________________________________________________________________________
70 void AliEMCAL::Copy(AliEMCAL & emcal)
72 TObject::Copy(emcal) ;
75 //____________________________________________________________________________
76 AliDigitizer* AliEMCAL::CreateDigitizer(AliRunDigitizer* manager) const
78 return new AliEMCALDigitizer(manager);
81 //____________________________________________________________________________
82 void AliEMCAL::CreateMaterials()
84 // Definitions of materials to build EMCAL and associated tracking media.
85 // media number in idtmed are 1599 to 1698.
88 AliMaterial(0, "Air$", 14.61, 7.3, 0.001205, 30420., 67500., 0, 0) ;
92 AliMaterial(1, "Pb$", 207.2, 82, 11.35, 0.56, 0., 0, 0) ;
95 // --- The polysterene scintillator (CH) ---
96 Float_t aP[2] = {12.011, 1.00794} ;
97 Float_t zP[2] = {6.0, 1.0} ;
98 Float_t wP[2] = {1.0, 1.0} ;
101 AliMixture(2, "Polystyrene$", aP, zP, dP, -2, wP) ;
104 AliMaterial(3, "Al$", 26.98, 13., 2.7, 8.9, 999., 0, 0) ;
105 // --- Absorption length is ignored ^
107 // DEFINITION OF THE TRACKING MEDIA
109 // for EMCAL: idtmed[1599->1698] equivalent to fIdtmed[0->100]
110 Int_t * idtmed = fIdtmed->GetArray() - 1599 ;
111 Int_t isxfld = gAlice->Field()->Integ() ;
112 Float_t sxmgmx = gAlice->Field()->Max() ;
116 // Air -> idtmed[1599]
117 AliMedium(0, "Air $", 0, 0,
118 isxfld, sxmgmx, 10.0, 1.0, 0.1, 0.1, 10.0, 0, 0) ;
120 // The Lead -> idtmed[1600]
122 AliMedium(1, "Lead $", 1, 0,
123 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
125 // The scintillator of the CPV made of Polystyrene scintillator -> idtmed[1601]
126 AliMedium(2, "CPV scint. $", 2, 1,
127 isxfld, sxmgmx, 10.0, 0.001, 0.1, 0.001, 0.001, 0, 0) ;
129 // Various Aluminium parts made of Al -> idtmed[1602]
130 AliMedium(3, "Al parts $", 3, 0,
131 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.001, 0.001, 0, 0) ;
134 // --- Set decent energy thresholds for gamma and electron tracking
136 // Tracking threshold for photons and electrons in Lead
137 gMC->Gstpar(idtmed[1600],"CUTGAM",0.00008) ;
138 gMC->Gstpar(idtmed[1600],"CUTELE",0.001) ;
139 gMC->Gstpar(idtmed[1600],"BCUTE",0.0001) ;
141 // --- Generate explicitly delta rays in Lead ---
142 gMC->Gstpar(idtmed[1600], "LOSS",3.) ;
143 gMC->Gstpar(idtmed[1600], "DRAY",1.) ;
144 gMC->Gstpar(idtmed[1600], "DCUTE",0.00001) ;
145 gMC->Gstpar(idtmed[1600], "DCUTM",0.00001) ;
147 // --- in aluminium parts ---
148 gMC->Gstpar(idtmed[1602], "LOSS",3.) ;
149 gMC->Gstpar(idtmed[1602], "DRAY",1.) ;
150 gMC->Gstpar(idtmed[1602], "DCUTE",0.00001) ;
151 gMC->Gstpar(idtmed[1602], "DCUTM",0.00001) ;
153 // --- and finally thresholds for photons and electrons in the scintillator ---
154 gMC->Gstpar(idtmed[1601],"CUTGAM",0.00008) ;
155 gMC->Gstpar(idtmed[1601],"CUTELE",0.001) ;
156 gMC->Gstpar(idtmed[1601],"BCUTE",0.0001) ;
160 //____________________________________________________________________________
161 void AliEMCAL::FillESD(AliESD* esd) const
163 // Fill the ESD with all RecParticles
164 AliEMCALGetter *gime = AliEMCALGetter::Instance( (fLoader->GetRunLoader()->GetFileName()).Data() );
165 gime->Event(gime->EventNumber(), "P") ;
166 TClonesArray *recParticles = gime->RecParticles();
167 Int_t nOfRecParticles = recParticles->GetEntries();
168 for (Int_t recpart=0; recpart<nOfRecParticles; recpart++) {
169 AliESDCaloTrack *ct = new AliESDCaloTrack((AliEMCALRecParticle*)recParticles->At(recpart));
170 esd->AddCaloTrack(ct);
176 //____________________________________________________________________________
177 void AliEMCAL::Hits2SDigits()
179 // create summable digits
181 AliEMCALSDigitizer* emcalDigitizer =
182 new AliEMCALSDigitizer(fLoader->GetRunLoader()->GetFileName().Data()) ;
183 emcalDigitizer->SetEventRange(0, -1) ; // do all the events
184 emcalDigitizer->ExecuteTask() ;
187 //____________________________________________________________________________
188 void AliEMCAL::Reconstruct() const
190 AliEMCALReconstructioner * rec = new AliEMCALReconstructioner((fLoader->GetRunLoader()->GetFileName()).Data()) ;
191 rec->SetEventRange(0, -1) ; // do all the events
195 //____________________________________________________________________________
196 AliLoader* AliEMCAL::MakeLoader(const char* topfoldername)
198 //different behaviour than standard (singleton getter)
199 // --> to be discussed and made eventually coherent
200 fLoader = new AliEMCALLoader(GetName(),topfoldername);
204 //____________________________________________________________________________
205 void AliEMCAL::SetTreeAddress()
207 // Linking Hits in Tree to Hits array
210 sprintf(branchname,"%s",GetName());
212 // Branch address for hit tree
213 TTree *treeH = TreeH();
215 branch = treeH->GetBranch(branchname);
219 fHits= new TClonesArray("AliEMCALHit",1000);
220 branch->SetAddress(&fHits);
224 Warning("SetTreeAddress","<%s> Failed",GetName());