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. *
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 **************************************************************************/
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 ---
31 #include "TClonesArray.h"
34 // --- Standard library ---
35 #include <Rstrstream.h>
37 // --- AliRoot header files ---
41 #include "AliEMCALGeometry.h"
42 //#include "AliEMCALQAChecker.h"
45 //____________________________________________________________________________
46 AliEMCAL::AliEMCAL():AliDetector()
55 //____________________________________________________________________________
56 AliEMCAL::AliEMCAL(const char* name, const char* title): AliDetector(name,title)
58 // ctor : title is used to identify the layout
60 fGeom = AliEMCALGeometry::GetInstance(GetTitle(),"") ;
65 //____________________________________________________________________________
71 //____________________________________________________________________________
72 void AliEMCAL::CreateMaterials()
74 // Definitions of materials to build EMCAL and associated tracking media.
75 // media number in idtmed are 1599 to 1698.
78 AliMaterial(0, "Air$", 14.61, 7.3, 0.001205, 30420., 67500., 0, 0) ;
82 AliMaterial(1, "Pb$", 207.2, 82, 11.35, 0.56, 0., 0, 0) ;
85 // --- The polysterene scintillator (CH) ---
86 Float_t aP[2] = {12.011, 1.00794} ;
87 Float_t zP[2] = {6.0, 1.0} ;
88 Float_t wP[2] = {1.0, 1.0} ;
91 AliMixture(2, "Polystyrene$", aP, zP, dP, -2, wP) ;
94 AliMaterial(3, "Al$", 26.98, 13., 2.7, 8.9, 999., 0, 0) ;
95 // --- Absorption length is ignored ^
98 AliMaterial(4, "Cu$", 63.546, 29, 8.96, 1.43, 14.8, 0, 0) ;
99 // --- Absorption length is ignored ^
102 // DEFINITION OF THE TRACKING MEDIA
104 // for EMCAL: idtmed[1599->1698] equivalent to fIdtmed[0->100]
105 Int_t * idtmed = fIdtmed->GetArray() - 1599 ;
106 Int_t isxfld = gAlice->Field()->Integ() ;
107 Float_t sxmgmx = gAlice->Field()->Max() ;
111 // Air -> idtmed[1599]
112 AliMedium(0, "Air $", 0, 0,
113 isxfld, sxmgmx, 10.0, 1.0, 0.1, 0.1, 10.0, 0, 0) ;
115 // The Lead -> idtmed[1600]
117 AliMedium(1, "Lead $", 1, 0,
118 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
121 // The scintillator of the CPV made of Polystyrene scintillator -> idtmed[1601]
122 AliMedium(2, "CPV scint. $", 2, 1,
123 isxfld, sxmgmx, 10.0, 0.001, 0.1, 0.001, 0.001, 0, 0) ;
125 // Various Aluminium parts made of Al -> idtmed[1602]
126 AliMedium(3, "Al parts $", 3, 0,
127 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.001, 0.001, 0, 0) ;
129 // Copper for HCal (post shower) -> idtmed[1603]
130 AliMedium(4, "Copper $", 4, 0,
131 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.001, 0.001, 0, 0) ;
135 // --- Set decent energy thresholds for gamma and electron tracking
137 // Tracking threshold for photons and electrons in Lead
138 gMC->Gstpar(idtmed[1600],"CUTGAM",0.00008) ;
139 gMC->Gstpar(idtmed[1600],"CUTELE",0.001) ;
140 gMC->Gstpar(idtmed[1600],"BCUTE",0.0001) ;
142 // --- Generate explicitly delta rays in Lead ---
143 gMC->Gstpar(idtmed[1600], "LOSS",3.) ;
144 gMC->Gstpar(idtmed[1600], "DRAY",1.) ;
145 gMC->Gstpar(idtmed[1600], "DCUTE",0.00001) ;
146 gMC->Gstpar(idtmed[1600], "DCUTM",0.00001) ;
148 // --- in aluminium parts ---
149 gMC->Gstpar(idtmed[1602], "LOSS",3.) ;
150 gMC->Gstpar(idtmed[1602], "DRAY",1.) ;
151 gMC->Gstpar(idtmed[1602], "DCUTE",0.00001) ;
152 gMC->Gstpar(idtmed[1602], "DCUTM",0.00001) ;
154 // --- in copper parts ---
155 gMC->Gstpar(idtmed[1603], "LOSS",3.) ;
156 gMC->Gstpar(idtmed[1603], "DRAY",1.) ;
157 gMC->Gstpar(idtmed[1603], "DCUTE",0.00001) ;
158 gMC->Gstpar(idtmed[1603], "DCUTM",0.00001) ;
162 // --- and finally thresholds for photons and electrons in the scintillator ---
163 gMC->Gstpar(idtmed[1601],"CUTGAM",0.00008) ;
164 gMC->Gstpar(idtmed[1601],"CUTELE",0.001) ;
165 gMC->Gstpar(idtmed[1601],"BCUTE",0.0001) ;
170 //____________________________________________________________________________
171 AliEMCALGeometry * AliEMCAL::GetGeometry() const
173 // gets the pointer to the AliEMCALGeometry unique instance
178 return AliEMCALGeometry::GetInstance(GetTitle(),"") ;
181 //____________________________________________________________________________
182 void AliEMCAL::SetTreeAddress()
187 sprintf(branchname,"%s",GetName());
189 // Branch address for hit tree
190 TTree *treeH = gAlice->TreeH();
191 if (treeH && fHits) {
192 branch = treeH->GetBranch(branchname);
193 if (branch) branch->SetAddress(&fHits);
197 //____________________________________________________________________________
198 void AliEMCAL::WriteQA()
201 // Make TreeQA in the output file.
204 fTreeQA = new TTree("TreeQA", "QA Alarms") ;
205 // Create Alarms branches
206 // Int_t bufferSize = 32000 ;
207 // Int_t splitlevel = 0 ;
208 // TFolder * alarmsF = (TFolder*)gROOT->FindObjectAny("Folders/Run/Conditions/QA/PHOS") ;
209 // TString branchName(alarmsF->GetName());
210 // TBranch * alarmsBranch = fTreeQA->Branch(branchName,"TFolder", &alarmsF, bufferSize, splitlevel);
211 // TString branchTitle = branchName + " QA alarms" ;
212 // alarmsBranch->SetTitle(branchTitle);
213 // alarmsBranch->Fill() ;