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 *
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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 ---
39 #include "AliEMCALGeometry.h"
40 #include "AliEMCALLoader.h"
43 //____________________________________________________________________________
44 AliEMCAL::AliEMCAL():AliDetector()
53 //____________________________________________________________________________
54 AliEMCAL::AliEMCAL(const char* name, const char* title): AliDetector(name,title)
56 // ctor : title is used to identify the layout
63 //____________________________________________________________________________
69 //____________________________________________________________________________
70 void AliEMCAL::CreateMaterials()
72 // Definitions of materials to build EMCAL and associated tracking media.
73 // media number in idtmed are 1599 to 1698.
76 AliMaterial(0, "Air$", 14.61, 7.3, 0.001205, 30420., 67500., 0, 0) ;
80 AliMaterial(1, "Pb$", 207.2, 82, 11.35, 0.56, 0., 0, 0) ;
83 // --- The polysterene scintillator (CH) ---
84 Float_t aP[2] = {12.011, 1.00794} ;
85 Float_t zP[2] = {6.0, 1.0} ;
86 Float_t wP[2] = {1.0, 1.0} ;
89 AliMixture(2, "Polystyrene$", aP, zP, dP, -2, wP) ;
92 AliMaterial(3, "Al$", 26.98, 13., 2.7, 8.9, 999., 0, 0) ;
93 // --- Absorption length is ignored ^
96 AliMaterial(4, "Cu$", 63.546, 29, 8.96, 1.43, 14.8, 0, 0) ;
97 // --- Absorption length is ignored ^
100 // DEFINITION OF THE TRACKING MEDIA
102 // for EMCAL: idtmed[1599->1698] equivalent to fIdtmed[0->100]
103 Int_t * idtmed = fIdtmed->GetArray() - 1599 ;
104 Int_t isxfld = gAlice->Field()->Integ() ;
105 Float_t sxmgmx = gAlice->Field()->Max() ;
109 // Air -> idtmed[1599]
110 AliMedium(0, "Air $", 0, 0,
111 isxfld, sxmgmx, 10.0, 1.0, 0.1, 0.1, 10.0, 0, 0) ;
113 // The Lead -> idtmed[1600]
115 AliMedium(1, "Lead $", 1, 0,
116 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
119 // The scintillator of the CPV made of Polystyrene scintillator -> idtmed[1601]
120 AliMedium(2, "CPV scint. $", 2, 1,
121 isxfld, sxmgmx, 10.0, 0.001, 0.1, 0.001, 0.001, 0, 0) ;
123 // Various Aluminium parts made of Al -> idtmed[1602]
124 AliMedium(3, "Al parts $", 3, 0,
125 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.001, 0.001, 0, 0) ;
127 // Copper for HCal (post shower) -> idtmed[1603]
128 AliMedium(4, "Copper $", 4, 0,
129 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.001, 0.001, 0, 0) ;
133 // --- Set decent energy thresholds for gamma and electron tracking
135 // Tracking threshold for photons and electrons in Lead
136 gMC->Gstpar(idtmed[1600],"CUTGAM",0.00008) ;
137 gMC->Gstpar(idtmed[1600],"CUTELE",0.001) ;
138 gMC->Gstpar(idtmed[1600],"BCUTE",0.0001) ;
140 // --- Generate explicitly delta rays in Lead ---
141 gMC->Gstpar(idtmed[1600], "LOSS",3.) ;
142 gMC->Gstpar(idtmed[1600], "DRAY",1.) ;
143 gMC->Gstpar(idtmed[1600], "DCUTE",0.00001) ;
144 gMC->Gstpar(idtmed[1600], "DCUTM",0.00001) ;
146 // --- in aluminium parts ---
147 gMC->Gstpar(idtmed[1602], "LOSS",3.) ;
148 gMC->Gstpar(idtmed[1602], "DRAY",1.) ;
149 gMC->Gstpar(idtmed[1602], "DCUTE",0.00001) ;
150 gMC->Gstpar(idtmed[1602], "DCUTM",0.00001) ;
152 // --- in copper parts ---
153 gMC->Gstpar(idtmed[1603], "LOSS",3.) ;
154 gMC->Gstpar(idtmed[1603], "DRAY",1.) ;
155 gMC->Gstpar(idtmed[1603], "DCUTE",0.00001) ;
156 gMC->Gstpar(idtmed[1603], "DCUTM",0.00001) ;
160 // --- and finally thresholds for photons and electrons in the scintillator ---
161 gMC->Gstpar(idtmed[1601],"CUTGAM",0.00008) ;
162 gMC->Gstpar(idtmed[1601],"CUTELE",0.001) ;
163 gMC->Gstpar(idtmed[1601],"BCUTE",0.0001) ;
168 //____________________________________________________________________________
169 AliEMCALGeometry * AliEMCAL::GetGeometry() const
171 // gets the pointer to the AliEMCALGeometry unique instance
176 return AliEMCALGeometry::GetInstance(GetTitle(),"") ;
179 //____________________________________________________________________________
180 void AliEMCAL::SetTreeAddress()
182 // Linking Hits in Tree to Hits array
185 sprintf(branchname,"%s",GetName());
187 // Branch address for hit tree
188 TTree *treeH = TreeH();
190 branch = treeH->GetBranch(branchname);
194 fHits= new TClonesArray("AliEMCALHit",1000);
195 //Info("SetTreeAddress","<%s> Setting Hits Address",GetName());
196 branch->SetAddress(&fHits);
200 Warning("SetTreeAddress","<%s> Failed",GetName());
204 //____________________________________________________________________________
205 void AliEMCAL::WriteQA()
208 // Make TreeQA in the output file.
211 fTreeQA = new TTree("TreeQA", "QA Alarms") ;
212 // Create Alarms branches
213 Int_t bufferSize = 32000 ;
214 Int_t splitlevel = 0 ;
216 TFolder* topfold = GetLoader()->GetTopFolder(); //get top aliroot folder; skowron
217 TString emcalqafn(AliConfig::Instance()->GetQAFolderName()+"/"); //get name of QAaut folder relative to top event; skowron
218 emcalqafn+=GetName(); //hard wired string!!! add the detector name to the pathname; skowron
219 TFolder * alarmsF = (TFolder*)topfold->FindObjectAny(emcalqafn); //get the folder
223 Error("WriteQA","Can not find folder with qa alarms");
226 TString branchName(alarmsF->GetName());
227 TBranch * alarmsBranch = fTreeQA->Branch(branchName,"TFolder", &alarmsF, bufferSize, splitlevel);
228 TString branchTitle = branchName + " QA alarms" ;
229 alarmsBranch->SetTitle(branchTitle);
230 alarmsBranch->Fill() ;
235 //____________________________________________________________________________
236 AliLoader* AliEMCAL::MakeLoader(const char* topfoldername)
238 //different behaviour than standard (singleton getter)
239 // --> to be discussed and made eventually coherent
240 fLoader = new AliEMCALLoader(GetName(),topfoldername);