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26 //
27 /// \file ExGflash2DetectorConstruction.cc
28 /// \brief Implementation of the ExGflash2DetectorConstruction class
29 //
30 // Created by Joanna Weng 26.11.2004
31
32 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
33 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
34
35 // User Classes
36 #include "ExGflash2DetectorConstruction.hh"
37
38 #include "ExGflash2SensitiveDetector.hh"
39
40 // G4 Classes
41 #include "G4AutoDelete.hh"
42 #include "G4Box.hh"
43 #include "G4Colour.hh"
44 #include "G4LogicalVolume.hh"
45 #include "G4Material.hh"
46 #include "G4NistManager.hh"
47 #include "G4PVPlacement.hh"
48 #include "G4SDManager.hh"
49 #include "G4SystemOfUnits.hh"
50 #include "G4ThreeVector.hh"
51 #include "G4VPhysicalVolume.hh"
52 #include "G4VisAttributes.hh"
53 #include "globals.hh"
54
55 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
56
57 ExGflash2DetectorConstruction::ExGflash2DetectorConstruction()
58 {
59 G4cout << "ExGflash2DetectorConstruction::Detector constructor" << G4endl;
60 }
61
62 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
63
64 ExGflash2DetectorConstruction::~ExGflash2DetectorConstruction() = default;
65
66 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
67
68 G4VPhysicalVolume* ExGflash2DetectorConstruction::Construct()
69 {
70 //--------- Definitions of Solids, Logical Volumes, Physical Volumes ---------
71 G4cout << "Defining the materials" << G4endl;
72 // Get nist material manager
73 G4NistManager* nistManager = G4NistManager::Instance();
74 // Build materials
75 G4Material* air = nistManager->FindOrBuildMaterial("G4_AIR");
76 G4Material* pbWO4 = nistManager->FindOrBuildMaterial("G4_PbWO4");
77
78 /*******************************
79 * The Experimental Hall *
80 *******************************/
81 G4double experimentalHall_x = 1000. * cm;
82 G4double experimentalHall_y = 1000. * cm;
83 G4double experimentalHall_z = 1000. * cm;
84
85 G4VSolid* experimentalHall_box = new G4Box("expHall_box", // World Volume
86 experimentalHall_x, // x size
87 experimentalHall_y, // y size
88 experimentalHall_z); // z size
89
90 auto experimentalHallLog = new G4LogicalVolume(experimentalHall_box, air, "expHallLog",
91 nullptr, // opt: fieldManager
92 nullptr, // opt: SensitiveDetector
93 nullptr); // opt: UserLimits
94 G4VPhysicalVolume* experimentalHallPhys =
95 new G4PVPlacement(nullptr,
96 G4ThreeVector(), // at (0,0,0)
97 "expHall", experimentalHallLog, nullptr, false, 0);
98
99 //------------------------------
100 // Calorimeter segments
101 //------------------------------
102 // Simplified `CMS-like` PbWO4 crystal calorimeter
103
104 G4int nbOfCrystals = 10; // this are the crystals PER ROW in this example
105 // cube of 10 x 10 crystals
106 // don't change it @the moment, since
107 // the readout in event action assumes this
108 // dimensions and is not automatically adapted
109 // in this version of the example :-(
110 // Simplified `CMS-like` PbWO4 crystal calorimeter
111 G4double calo_xside = 31 * cm;
112 G4double calo_yside = 31 * cm;
113 G4double calo_zside = 24 * cm;
114
115 G4double crystalWidth = 3 * cm;
116 G4double crystalLength = 24 * cm;
117
118 calo_xside = (crystalWidth * nbOfCrystals) + 1 * cm;
119 calo_yside = (crystalWidth * nbOfCrystals) + 1 * cm;
120 calo_zside = crystalLength;
121
122 auto calo_box = new G4Box("CMS calorimeter", // its name
123 calo_xside / 2., // size
124 calo_yside / 2., calo_zside / 2.);
125 auto caloLog = new G4LogicalVolume(calo_box, // its solid
126 air, // its material
127 "calo log", // its name
128 nullptr, // opt: fieldManager
129 nullptr, // opt: SensitiveDetector
130 nullptr); // opt: UserLimit
131
132 G4double xpos = 0.0;
133 G4double ypos = 0.0;
134 G4double zpos = 100.0 * cm;
135 new G4PVPlacement(nullptr, G4ThreeVector(xpos, ypos, zpos), caloLog, "calorimeter",
136 experimentalHallLog, false, 1);
137
138 // Crystals
139 G4VSolid* crystal_box = new G4Box("Crystal", // its name
140 crystalWidth / 2, crystalWidth / 2, crystalLength / 2);
141 // size
142 fCrystalLog = new G4LogicalVolume(crystal_box, // its solid
143 pbWO4, // its material
144 "CrystalLog"); // its name
145
146 for (G4int i = 0; i < nbOfCrystals; i++) {
147 for (G4int j = 0; j < nbOfCrystals; j++) {
148 G4int n = i * 10 + j;
149 G4ThreeVector crystalPos((i * crystalWidth) - 135, (j * crystalWidth) - 135, 0);
150 fCrystalPhys[n] = new G4PVPlacement(nullptr, // no rotation
151 crystalPos, // translation
152 fCrystalLog,
153 "crystal", // its name
154 caloLog, false, i);
155 }
156 }
157 G4cout << "There are " << nbOfCrystals << " crystals per row in the calorimeter, so in total "
158 << nbOfCrystals * nbOfCrystals << " crystals" << G4endl;
159 G4cout << "They have width of " << crystalWidth / cm << " cm and a length of "
160 << crystalLength / cm << " cm. The Material is " << pbWO4 << G4endl;
161
162 experimentalHallLog->SetVisAttributes(G4VisAttributes::GetInvisible());
163 auto caloVisAtt = new G4VisAttributes(G4Colour(1.0, 1.0, 1.0));
164 auto crystalVisAtt = new G4VisAttributes(G4Colour(1.0, 1.0, 0.0));
165 caloLog->SetVisAttributes(caloVisAtt);
166 fCrystalLog->SetVisAttributes(crystalVisAtt);
167
168 // Parametrisation region defined in ExGflash2ParallelWorld
169
170 return experimentalHallPhys;
171 }
172
173 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
174
175 void ExGflash2DetectorConstruction::ConstructSDandField()
176 {
177 // -- sensitive detectors:
178 G4SDManager* SDman = G4SDManager::GetSDMpointer();
179 auto CaloSD = new ExGflash2SensitiveDetector("Calorimeter", this);
180 SDman->AddNewDetector(CaloSD);
181 fCrystalLog->SetSensitiveDetector(CaloSD);
182
183 // Fast simulation implemented in ExGflash2ParallelWorld
184 }
185
186 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
187