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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 | // 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) | |
23 | // | |
24 | //*-- Additional Contributions: Sahal Yacoob (LBNL/UCT) | |
25 | // | |
26 | ////////////////////////////////////////////////////////////////////////////// | |
27 | ||
28 | // --- Standard library --- | |
29 | #include <strstream.h> | |
30 | ||
31 | // --- ROOT system --- | |
32 | class TFile; | |
33 | #include "TBranch.h" | |
34 | #include "TClonesArray.h" | |
35 | #include "TTree.h" | |
36 | ||
37 | // --- AliRoot header files --- | |
38 | ||
39 | #include "AliEMCAL.h" | |
40 | #include "AliEMCALGeometry.h" | |
41 | #include "AliMC.h" | |
42 | #include "AliRun.h" | |
43 | #include "AliMagF.h" | |
44 | ||
45 | ClassImp(AliEMCAL) | |
46 | ||
47 | //____________________________________________________________________________ | |
48 | AliEMCAL::AliEMCAL():AliDetector() | |
49 | { | |
50 | // ctor | |
51 | //We do not create objects, because these pointers will be overwritten during reading from file. | |
52 | fGeom = 0; | |
53 | } | |
54 | //____________________________________________________________________________ | |
55 | AliEMCAL::AliEMCAL(const char* name, const char* title): AliDetector(name,title) { | |
56 | // ctor : title is used to identify the layout | |
57 | fGeom = 0; | |
58 | // gets an instance of the geometry parameters class | |
59 | } | |
60 | //____________________________________________________________________________ | |
61 | AliEMCAL::~AliEMCAL(){ | |
62 | // dtor | |
63 | delete fHits; | |
64 | } | |
65 | ||
66 | //____________________________________________________________________________ | |
67 | void AliEMCAL::CreateMaterials(){ | |
68 | // Definitions of materials to build EMCAL and associated tracking media. | |
69 | // media number in idtmed are 1599 to 1698. | |
70 | ||
71 | // --- Air --- | |
72 | AliMaterial(0, "Air$", 14.61, 7.3, 0.001205, 30420., 67500., 0, 0) ; | |
73 | ||
74 | ||
75 | // --- Lead --- | |
76 | AliMaterial(1, "Pb$", 207.2, 82, 11.35, 0.56, 0., 0, 0) ; | |
77 | ||
78 | ||
79 | // --- The polysterene scintillator (CH) --- | |
80 | Float_t aP[2] = {12.011, 1.00794} ; | |
81 | Float_t zP[2] = {6.0, 1.0} ; | |
82 | Float_t wP[2] = {1.0, 1.0} ; | |
83 | Float_t dP = 1.032 ; | |
84 | ||
85 | AliMixture(2, "Polystyrene$", aP, zP, dP, -2, wP) ; | |
86 | ||
87 | // --- Aluminium --- | |
88 | AliMaterial(3, "Al$", 26.98, 13., 2.7, 8.9, 999., 0, 0) ; | |
89 | // --- Absorption length is ignored ^ | |
90 | ||
91 | ||
92 | ||
93 | // DEFINITION OF THE TRACKING MEDIA | |
94 | ||
95 | // for EMCAL: idtmed[1599->1698] equivalent to fIdtmed[0->100] | |
96 | Int_t * idtmed = fIdtmed->GetArray() - 1599 ; | |
97 | Int_t isxfld = gAlice->Field()->Integ() ; | |
98 | Float_t sxmgmx = gAlice->Field()->Max() ; | |
99 | ||
100 | ||
101 | ||
102 | // Air -> idtmed[1599] | |
103 | AliMedium(0, "Air $", 0, 0, | |
104 | isxfld, sxmgmx, 10.0, 1.0, 0.1, 0.1, 10.0, 0, 0) ; | |
105 | ||
106 | // The Lead -> idtmed[1600] | |
107 | ||
108 | AliMedium(1, "Lead $", 1, 0, | |
109 | isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ; | |
110 | ||
111 | ||
112 | // The scintillator of the CPV made of Polystyrene scintillator -> idtmed[1601] | |
113 | AliMedium(2, "CPV scint. $", 2, 1, | |
114 | isxfld, sxmgmx, 10.0, 0.001, 0.1, 0.001, 0.001, 0, 0) ; | |
115 | ||
116 | // Various Aluminium parts made of Al -> idtmed[1602] | |
117 | AliMedium(3, "Al parts $", 3, 0, | |
118 | isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.001, 0.001, 0, 0) ; | |
119 | ||
120 | ||
121 | ||
122 | ||
123 | // --- Set decent energy thresholds for gamma and electron tracking | |
124 | ||
125 | // Tracking threshold for photons and electrons in Lead | |
126 | gMC->Gstpar(idtmed[1600],"CUTGAM",0.00008) ; | |
127 | gMC->Gstpar(idtmed[1600],"CUTELE",0.001) ; | |
128 | gMC->Gstpar(idtmed[1600],"BCUTE",0.0001) ; | |
129 | ||
130 | // --- Generate explicitly delta rays in Lead --- | |
131 | gMC->Gstpar(idtmed[1600], "LOSS",3.) ; | |
132 | gMC->Gstpar(idtmed[1600], "DRAY",1.) ; | |
133 | ||
134 | // --- and in aluminium parts --- | |
135 | gMC->Gstpar(idtmed[1602], "LOSS",3.) ; | |
136 | gMC->Gstpar(idtmed[1602], "DRAY",1.) ; | |
137 | ||
138 | ||
139 | // --- and finally thresholds for photons and electrons in the scintillator --- | |
140 | gMC->Gstpar(idtmed[1601],"CUTGAM",0.00008) ; | |
141 | gMC->Gstpar(idtmed[1601],"CUTELE",0.001) ; | |
142 | gMC->Gstpar(idtmed[1601],"BCUTE",0.0001) ; | |
143 | ||
144 | ||
145 | } | |
146 | //____________________________________________________________________________ | |
147 | void AliEMCAL::SetTreeAddress() | |
148 | { | |
149 | ||
150 | TBranch *branch; | |
151 | char branchname[20]; | |
152 | sprintf(branchname,"%s",GetName()); | |
153 | ||
154 | // Branch address for hit tree | |
155 | TTree *treeH = gAlice->TreeH(); | |
156 | if (treeH && fHits) { | |
157 | branch = treeH->GetBranch(branchname); | |
158 | if (branch) branch->SetAddress(&fHits); | |
159 | } | |
160 | ||
161 | } | |
162 | ||
163 |