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Par01ParallelWorldForPion.cc
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30 #include "Par01ParallelWorldForPion.hh"
31 #include "Par01PionShowerModel.hh"
32 
33 #include "G4Box.hh"
34 #include "G4LogicalVolume.hh"
35 #include "G4Region.hh"
36 #include "G4PVPlacement.hh"
37 #include "G4ThreeVector.hh"
38 #include "G4SystemOfUnits.hh"
39 #include "G4NistManager.hh"
40 
41 #include "G4RegionStore.hh"
42 
43 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
44 
45 Par01ParallelWorldForPion::Par01ParallelWorldForPion(G4String worldName)
46  : G4VUserParallelWorld(worldName)
47 {;}
48 
49 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
50 
51 Par01ParallelWorldForPion::~Par01ParallelWorldForPion()
52 {;}
53 
54 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
55 
56 void Par01ParallelWorldForPion::Construct()
57 {
58  // -- Get nist material manager
59  G4NistManager* nistManager = G4NistManager::Instance();
60 
61  // Build materials
62  G4Material* air = nistManager->FindOrBuildMaterial("G4_AIR");
63 
64  // -------------------------------
65  // Build parallel/ghost geometry:
66  // -------------------------------
67 
68  // -- Obtain clone of mass geometry world from GetWorld() base class utility:
69  G4VPhysicalVolume* ghostWorld = GetWorld();
70  // -- Why needed ? No default ?
71  ghostWorld->GetLogicalVolume()->SetMaterial(air);
72  G4Region* parallelWorldRegion = new G4Region("ParallelWorldRegion");
73  parallelWorldRegion->AddRootLogicalVolume(ghostWorld->GetLogicalVolume());
74 
75  // -- Create box for encompassing Elec.+Had. calorimeters together:
76  G4double detectSize = 125*cm;
77  G4Box *ghostBox
78  = new G4Box("GhostBox", detectSize+5*cm, detectSize+5*cm, 80*cm);
79  // -- Build the subsequent logical volume:
80  G4LogicalVolume* ghostLogical
81  = new G4LogicalVolume(ghostBox,
82  air, // -- no material : IMPOSSIBLE !!!
83  "GhostLogical",
84  0, 0, 0);
85  // -- And place this logical volume in the parallel geometry:
86  new G4PVPlacement(0,G4ThreeVector(0., 0., 175*cm),
87  "GhostPhysical",
88  ghostLogical,
89  ghostWorld,false,0);
90 
91  // -----------------------
92  // Setup fast simulation:
93  // -----------------------
94 
95  // -- Make Elec+Had logical volume becoming a region:
96  G4cout << "Declaring region..." << G4endl;
97  G4Region* ghostRegion = new G4Region("GhostCalorimeterRegion");
98  G4cout << "... region declared. Setting it the ghostLogical volume..." << G4endl;
99  ghostRegion->AddRootLogicalVolume(ghostLogical);
100  G4cout << "... succes.\n" << G4endl;
101 
102 }
103 
104 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
105 
106 void Par01ParallelWorldForPion::ConstructSD()
107 {
108  G4RegionStore* regionStore = G4RegionStore::GetInstance();
109 
110  G4Region* ghostRegion = regionStore->GetRegion("GhostCalorimeterRegion");
111  // -- Attach fast simulation model (create the G4FastSimulationManager if needed):
112  new Par01PionShowerModel("ghostPionShowerModel",ghostRegion);
113 
114 }