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/// \file B1/src/DetectorConstruction.cc
/// \brief Implementation of the B1::DetectorConstruction class

#include "DetectorConstruction.hh"

#include "G4Box.hh"
#include "G4Cons.hh"
#include "G4LogicalVolume.hh"
#include "G4NistManager.hh"
#include "G4PVPlacement.hh"
#include "G4SystemOfUnits.hh"
#include "G4Trd.hh"

namespace B1
{

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......

G4VPhysicalVolume* DetectorConstruction::Construct()
{
  G4bool checkOverlaps = true;

  // Set materials
  G4NistManager* nist = G4NistManager::Instance();
  G4Material* Vaccum = nist->FindOrBuildMaterial("G4_Galactic");
  G4Material* Lead = nist->FindOrBuildMaterial("G4_Pb");

  // Construct volumes
  //
  auto world_box  = new G4Box("world_box", 17.*cm, 17.*cm, 17.*cm);  
  auto world_log  = new G4LogicalVolume(world_box, Vaccum, "world_log");
  auto world_phys = new G4PVPlacement(G4Transform3D(), world_log, "world_phys", nullptr, false, 0, checkOverlaps);

  auto experimentalHall_box = new G4Box("experimentaHall_box", 15.01*cm, 15.01*cm, 15.01*cm);  
  auto experimentalHall_log = new G4LogicalVolume(experimentalHall_box, Vaccum, "experimentalHall_log");
  new G4PVPlacement(G4Transform3D(), experimentalHall_log, "experimentalHall_phys", world_log, false, 0, checkOverlaps);

  auto det_box = new G4Box("det_box", 5.*cm, 5.*cm, 0.001*mm);  
  auto det_log = new G4LogicalVolume(det_box, Lead, "det_log");
  new G4PVPlacement(G4TranslateY3D(-5.*cm)*G4RotateX3D(270.*deg), det_log, "det_phys", experimentalHall_log, false, 0, checkOverlaps);

  fScoringVolume = world_log;
  return world_phys;
}

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......

}  // namespace B1