DetectorConstruction.cc

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#include "DetectorConstruction.hh"
#include "DetectorMessenger.hh"

#include "G4NistManager.hh"
#include "G4Material.hh"
#include "G4Element.hh"
#include "G4LogicalBorderSurface.hh"
#include "G4LogicalSkinSurface.hh"
#include "G4OpticalSurface.hh"
#include "G4Box.hh"
#include "G4LogicalVolume.hh"
#include "G4ThreeVector.hh"
#include "G4PVPlacement.hh"
#include "G4SystemOfUnits.hh"

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DetectorConstruction::DetectorConstruction()
 : G4VUserDetectorConstruction(),
   fDetectorMessenger(nullptr)
{
  fExpHall_x = fExpHall_y = fExpHall_z = 10.0*m;
  fTank_x    = fTank_y    = fTank_z    =  1.0*m;

  fTank = nullptr;

  fTankMPT    = new G4MaterialPropertiesTable();
  fWorldMPT   = new G4MaterialPropertiesTable();
  fSurfaceMPT = new G4MaterialPropertiesTable();

  fSurface = new G4OpticalSurface("Surface");
  fSurface->SetType(dielectric_dielectric);
  fSurface->SetFinish(ground);
  fSurface->SetModel(unified);
  fSurface->SetMaterialPropertiesTable(fSurfaceMPT);

  fTank_LV  = nullptr;
  fWorld_LV = nullptr;

  fTankMaterial  = G4NistManager::Instance()->FindOrBuildMaterial("G4_WATER");
  fWorldMaterial = G4NistManager::Instance()->FindOrBuildMaterial("G4_AIR");

  fDetectorMessenger = new DetectorMessenger(this);
}

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DetectorConstruction::~DetectorConstruction()
{
  delete fDetectorMessenger;
}

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G4VPhysicalVolume* DetectorConstruction::Construct()
{
  fTankMaterial->SetMaterialPropertiesTable(fTankMPT);
  fTankMaterial->GetIonisation()->SetBirksConstant(0.126*mm/MeV);

  fWorldMaterial->SetMaterialPropertiesTable(fWorldMPT);

  // ------------- Volumes --------------
  // The experimental Hall
  G4Box* world_box = new G4Box("World", fExpHall_x, fExpHall_y, fExpHall_z);

  fWorld_LV
    = new G4LogicalVolume(world_box, fWorldMaterial, "World", 0, 0, 0);

  G4VPhysicalVolume* world_PV
    = new G4PVPlacement(0, G4ThreeVector(), fWorld_LV, "World", 0, false, 0);

  // The tank
  G4Box* tank_box = new G4Box("Tank", fTank_x, fTank_y, fTank_z);

  fTank_LV
    = new G4LogicalVolume(tank_box, fTankMaterial, "Tank", 0, 0, 0);

  fTank
    = new G4PVPlacement(0, G4ThreeVector(), fTank_LV, "Tank",
                        fWorld_LV, false, 0);

  // ------------- Surface --------------

  G4LogicalBorderSurface* surface =
          new G4LogicalBorderSurface("Surface",
                                 fTank, world_PV, fSurface);

  G4OpticalSurface* opticalSurface = dynamic_cast <G4OpticalSurface*>
        (surface->GetSurface(fTank,world_PV)->GetSurfaceProperty());
  G4cout << "******  opticalSurface->DumpInfo:" << G4endl;
  if (opticalSurface) { opticalSurface->DumpInfo(); }
  G4cout << "******  end of opticalSurface->DumpInfo" << G4endl;

  return world_PV;
}

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void DetectorConstruction::SetSurfaceSigmaAlpha(G4double v) {
  fSurface->SetSigmaAlpha(v);
  G4RunManager::GetRunManager()->GeometryHasBeenModified();

  G4cout << "Surface sigma alpha set to: " << fSurface->GetSigmaAlpha()
         << G4endl;
}

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void DetectorConstruction::SetSurfacePolish(G4double v) {
  fSurface->SetPolish(v);
  G4RunManager::GetRunManager()->GeometryHasBeenModified();

  G4cout << "Surface polish set to: " << fSurface->GetPolish()
         << G4endl;
}

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void DetectorConstruction::AddTankMPV(const char* c,
                                     G4MaterialPropertyVector* mpv) {
  fTankMPT->AddProperty(c, mpv);
  G4cout << "The MPT for the box is now: " << G4endl;
  fTankMPT->DumpTable();
  G4cout << "............." << G4endl;
}

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
void DetectorConstruction::AddWorldMPV(const char* c,
                                       G4MaterialPropertyVector* mpv) {
  fWorldMPT->AddProperty(c, mpv);
  G4cout << "The MPT for the world is now: " << G4endl;
  fWorldMPT->DumpTable();
  G4cout << "............." << G4endl;
}

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
void DetectorConstruction::AddSurfaceMPV(const char* c,
                                         G4MaterialPropertyVector* mpv) {
  fSurfaceMPT->AddProperty(c, mpv);
  G4cout << "The MPT for the surface is now: " << G4endl;
  fSurfaceMPT->DumpTable();
  G4cout << "............." << G4endl;
}

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
void DetectorConstruction::AddTankMPC(const char* c, G4double v) {
  fTankMPT->AddConstProperty(c, v);
  G4cout << "The MPT for the box is now: " << G4endl;
  fTankMPT->DumpTable();
  G4cout << "............." << G4endl;
}

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
void DetectorConstruction::AddWorldMPC(const char* c, G4double v) {
  fWorldMPT->AddConstProperty(c, v);
  G4cout << "The MPT for the world is now: " << G4endl;
  fWorldMPT->DumpTable();
  G4cout << "............." << G4endl;
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
void DetectorConstruction::AddSurfaceMPC(const char* c, G4double v) {
  fSurfaceMPT->AddConstProperty(c, v);
  G4cout << "The MPT for the surface is now: " << G4endl;
  fSurfaceMPT->DumpTable();
  G4cout << "............." << G4endl;
}

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
void DetectorConstruction::SetWorldMaterial(const G4String& mat) {
  G4Material* pmat = G4NistManager::Instance()->FindOrBuildMaterial(mat);
  if (pmat && fWorldMaterial != pmat) {
    fWorldMaterial = pmat;
    if (fWorld_LV) {
      fWorld_LV->SetMaterial(fWorldMaterial);
      fWorldMaterial->SetMaterialPropertiesTable(fWorldMPT);
    }
    G4RunManager::GetRunManager()->PhysicsHasBeenModified();
    G4cout << "World material set to " << fWorldMaterial->GetName()
           << G4endl;
  }
}

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
void DetectorConstruction::SetTankMaterial(const G4String& mat) {
  G4Material* pmat = G4NistManager::Instance()->FindOrBuildMaterial(mat);
  if (pmat && fTankMaterial != pmat) {
    fTankMaterial = pmat;
    if (fTank_LV) {
      fTank_LV->SetMaterial(fTankMaterial);
      fTankMaterial->SetMaterialPropertiesTable(fTankMPT);
      fTankMaterial->GetIonisation()->SetBirksConstant(0.126*mm/MeV);
    }
    G4RunManager::GetRunManager()->PhysicsHasBeenModified();
    G4cout << "Tank material set to " << fTankMaterial->GetName()
           << G4endl;
  }
}