source: trunk/examples/extended/electromagnetic/TestEm18/src/DetectorConstruction.cc @ 1051

Last change on this file since 1051 was 807, checked in by garnier, 16 years ago

update
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26// $Id: DetectorConstruction.cc,v 1.2 2007/02/16 11:59:47 maire Exp $
27// GEANT4 tag $Name:  $
28//
29//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
30//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
31
32#include "DetectorConstruction.hh"
33#include "DetectorMessenger.hh"
34
35#include "G4Material.hh"
36#include "G4Box.hh"
37#include "G4LogicalVolume.hh"
38#include "G4PVPlacement.hh"
39
40#include "G4GeometryManager.hh"
41#include "G4PhysicalVolumeStore.hh"
42#include "G4LogicalVolumeStore.hh"
43#include "G4SolidStore.hh"
44
45#include "G4UnitsTable.hh"
46
47//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
48
49DetectorConstruction::DetectorConstruction()
50:pBox(0), lBox(0), aMaterial(0)
51{
52  BoxSize = 1*cm;
53  DefineMaterials();
54  SetMaterial("Water"); 
55  detectorMessenger = new DetectorMessenger(this);
56}
57
58//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
59
60DetectorConstruction::~DetectorConstruction()
61{ delete detectorMessenger;}
62
63//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
64
65G4VPhysicalVolume* DetectorConstruction::Construct()
66{
67  return ConstructVolumes();
68}
69
70//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
71
72void DetectorConstruction::DefineMaterials()
73{
74  //
75  // define Elements
76  //
77  G4double z,a;
78 
79  G4Element* H  = new G4Element("Hydrogen" ,"H" , z= 1., a=   1.01*g/mole);
80  G4Element* N  = new G4Element("Nitrogen" ,"N" , z= 7., a=  14.01*g/mole);
81  G4Element* O  = new G4Element("Oxygen"   ,"O" , z= 8., a=  16.00*g/mole);
82 
83  //
84  // define materials
85  //
86  G4double density;
87  G4int ncomponents, natoms;
88  G4double fractionmass; 
89 
90  G4Material* Air = 
91  new G4Material("Air", density= 1.290*mg/cm3, ncomponents=2);
92  Air->AddElement(N, fractionmass=70.*perCent);
93  Air->AddElement(O, fractionmass=30.*perCent);
94
95  G4Material* H2O = 
96  new G4Material("Water", density= 1.000*g/cm3, ncomponents=2);
97  H2O->AddElement(H, natoms=2);
98  H2O->AddElement(O, natoms=1);
99  H2O->GetIonisation()->SetMeanExcitationEnergy(75.0*eV);
100 
101  G4Material* vapor = 
102  new G4Material("Water_vapor", density= 1.000*mg/cm3, ncomponents=2);
103  vapor->AddElement(H, natoms=2);
104  vapor->AddElement(O, natoms=1);
105  vapor->GetIonisation()->SetMeanExcitationEnergy(75.0*eV);
106 
107  new G4Material("Carbon"     , z=6.,  a= 12.01*g/mole, density= 2.267*g/cm3);
108  new G4Material("Aluminium"  , z=13., a= 26.98*g/mole, density= 2.700*g/cm3);
109  new G4Material("Silicon"    , z=14., a= 28.09*g/mole, density= 2.330*g/cm3);
110  new G4Material("liquidArgon", z=18., a= 39.95*g/mole, density= 1.390*g/cm3);
111  new G4Material("Iron"       , z=26., a= 55.85*g/mole, density= 7.870*g/cm3); 
112  new G4Material("Germanium"  , z=32., a= 72.61*g/mole, density= 5.323*g/cm3);
113  new G4Material("Tungsten"   , z=74., a=183.85*g/mole, density= 19.30*g/cm3);
114  new G4Material("Lead"       , z=82., a=207.19*g/mole, density= 11.35*g/cm3);
115
116  G4cout << *(G4Material::GetMaterialTable()) << G4endl;
117}
118
119//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
120
121G4VPhysicalVolume* DetectorConstruction::ConstructVolumes()
122{
123  // Cleanup old geometry
124  G4GeometryManager::GetInstance()->OpenGeometry();
125  G4PhysicalVolumeStore::GetInstance()->Clean();
126  G4LogicalVolumeStore::GetInstance()->Clean();
127  G4SolidStore::GetInstance()->Clean();
128
129  G4Box*
130  sBox = new G4Box("Container",                         //its name
131                   BoxSize/2,BoxSize/2,BoxSize/2);      //its dimensions
132
133  lBox = new G4LogicalVolume(sBox,                      //its shape
134                             aMaterial,                 //its material
135                             aMaterial->GetName());     //its name
136
137  pBox = new G4PVPlacement(0,                           //no rotation
138                           G4ThreeVector(),             //at (0,0,0)
139                           lBox,                        //its logical volume                       
140                           aMaterial->GetName(),        //its name
141                           0,                           //its mother  volume
142                           false,                       //no boolean operation
143                           0);                          //copy number
144                           
145  PrintParameters();
146 
147  //always return the root volume
148  //
149  return pBox;
150}
151
152//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
153
154void DetectorConstruction::PrintParameters()
155{
156  G4cout << "\n The Box is " << G4BestUnit(BoxSize,"Length")
157         << " of " << aMaterial->GetName() << G4endl;
158}
159
160//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
161
162void DetectorConstruction::SetMaterial(G4String materialChoice)
163{
164  // search the material by its name
165  G4Material* pttoMaterial = G4Material::GetMaterial(materialChoice);
166  if (pttoMaterial) {
167   aMaterial = pttoMaterial;
168   UpdateGeometry();
169  } else {
170    G4cout << "\n--> warning from DetectorConstruction::SetMaterial : "
171           << materialChoice << " not found" << G4endl; 
172  } 
173}
174
175//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
176
177void DetectorConstruction::SetSize(G4double value)
178{
179  BoxSize = value;
180  UpdateGeometry(); 
181}
182
183//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
184
185#include "G4RunManager.hh"
186
187void DetectorConstruction::UpdateGeometry()
188{
189  if (pBox) 
190  G4RunManager::GetRunManager()->DefineWorldVolume(ConstructVolumes());
191}
192
193//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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