exMPI04/src/DetectorConstruction.cc

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0025 //
0026 //
0027 /// @file DetectorConstruction.hh
0028 /// @brief Define geometry
0029
0030 #include "DetectorConstruction.hh"
0031
0032 #include "VoxelParam.hh"
0033 #include "VoxelSD.hh"
0034
0035 #include "G4Box.hh"
0036 #include "G4LogicalVolume.hh"
0037 #include "G4NistManager.hh"
0038 #include "G4PVParameterised.hh"
0039 #include "G4PVPlacement.hh"
0040 #include "G4SystemOfUnits.hh"
0041 #include "G4VisAttributes.hh"
0042
0043 typedef G4LogicalVolume G4LV;
0044 typedef G4PVPlacement G4PVP;
0045 typedef G4VisAttributes G4VA;
0046
0047 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0048 DetectorConstruction::DetectorConstruction() : flv_voxel(NULL) {}
0049
0050 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0051 DetectorConstruction::~DetectorConstruction() {}
0052
0053 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0054 G4VPhysicalVolume* DetectorConstruction::Construct()
0055 {
0056   G4NistManager* nistManager = G4NistManager::Instance();
0057   G4VisAttributes* va;
0058
0059   // world volume
0060   const G4double DXYZ_WORLD = 200. * cm;
0061   G4Box* sld_world = new G4Box("world", DXYZ_WORLD / 2., DXYZ_WORLD / 2., DXYZ_WORLD / 2.);
0062
0063   G4Material* vacuum = nistManager->FindOrBuildMaterial("G4_Galactic");
0064   G4LV* lv_world = new G4LogicalVolume(sld_world, vacuum, "world");
0065   G4PVP* world = new G4PVPlacement(0, G4ThreeVector(), "AREA", lv_world, 0, false, 0);
0066   // vis. attributes
0067   va = new G4VA(G4Color(1., 1., 1.));
0068   va->SetVisibility(false);
0069   lv_world->SetVisAttributes(va);
0070
0071   // water phantom
0072   const G4double DXY_PHANTOM = 20. * cm;
0073   const G4double DZ_PHANTOM = 50. * cm;
0074
0075   G4Box* sld_phantom = new G4Box("phantom", DXY_PHANTOM / 2., DXY_PHANTOM / 2., DZ_PHANTOM / 2.);
0076
0077   G4Material* water = nistManager->FindOrBuildMaterial("G4_WATER");
0078   G4LV* lv_phantom = new G4LogicalVolume(sld_phantom, water, "phantom");
0079
0080   va = new G4VA(G4Color(0., 1., 1.));
0081   lv_phantom->SetVisAttributes(va);
0082
0083   new G4PVP(0, G4ThreeVector(), lv_phantom, "phantom", lv_world, false, 0);
0084
0085   // voxel planes
0086   const G4double DXY_VXP = 20. * cm;
0087   const G4double DZ_VXP = 1. * mm;
0088
0089   G4Box* sld_vxp = new G4Box("vxplane", DXY_VXP / 2., DXY_VXP / 2., DZ_VXP / 2.);
0090   G4LV* lv_vxp = new G4LV(sld_vxp, water, "vxplane");
0091
0092   va = new G4VA(G4Color(1., 0., 0.));
0093   va->SetVisibility(false);
0094   lv_vxp->SetVisAttributes(va);
0095
0096   for (G4int iz = 0; iz < 500; iz++) {
0097     G4double z0 = -DZ_PHANTOM / 2. + (iz + 0.5) * DZ_VXP;
0098     new G4PVP(0, G4ThreeVector(0., 0., z0), lv_vxp, "vxplane", lv_phantom, false, 1000 + iz);
0099   }
0100
0101   // voxel parameterized
0102   G4Box* sld_voxel = new G4Box("voxel", 1., 1., 1.);  // dummy
0103   flv_voxel = new G4LV(sld_voxel, water, "voxel");
0104
0105   va = new G4VA(G4Color(0., 1., 1.));
0106   va->SetVisibility(false);
0107   flv_voxel->SetVisAttributes(va);
0108
0109   const G4int nvoxels = 100 * 100;
0110   new G4PVParameterised("voxle", flv_voxel, lv_vxp, kUndefined, nvoxels, new VoxelParam());
0111
0112   return world;
0113 }
0114
0115 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0116 void DetectorConstruction::ConstructSDandField()
0117 {
0118   flv_voxel->SetSensitiveDetector(new VoxelSD("voxel"));
0119 }