examples/extended/optical/OpNovice2/src/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;
  fSurface = nullptr;

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

  fDetectorMessenger = new DetectorMessenger(this);
}

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

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G4VPhysicalVolume* DetectorConstruction::Construct()
{

// ------------- Materials -------------

  G4NistManager* man = G4NistManager::Instance();

  G4Material* air =   man->FindOrBuildMaterial("G4_AIR");
  G4Material* water = man->FindOrBuildMaterial("G4_WATER");

//
// ------------ Generate & Add Material Properties Table ------------
//


  water->SetMaterialPropertiesTable(fBoxMPT);
  water->GetIonisation()->SetBirksConstant(0.126*mm/MeV);

  air->SetMaterialPropertiesTable(fWorldMPT);

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

  G4LogicalVolume* world_LV
    = new G4LogicalVolume(world_box,air, "World", 0, 0, 0);

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

  // The Water Tank
  G4Box* waterTank_box = new G4Box("Tank",fTank_x,fTank_y,fTank_z);

  G4LogicalVolume* waterTank_log
    = new G4LogicalVolume(waterTank_box,water,"Tank",0,0,0);

  fTank
    = new G4PVPlacement(0, G4ThreeVector(), waterTank_log, "Tank",
                        world_LV, false, 0);

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

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

  fSurface->SetMaterialPropertiesTable(fSurfaceMPT);

  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();

  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::AddBoxMPV(const char* c,
                                     G4MaterialPropertyVector* mpv) {
  mpv->SetSpline(true);
  fBoxMPT->AddProperty(c, mpv);
  G4cout << "The MPT for the box is now: " << G4endl;
  fBoxMPT->DumpTable();
  G4cout << "............." << G4endl;
}

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

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

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

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void DetectorConstruction::AddWorldMPCV(const char* c, G4double v) {
  fWorldMPT->AddConstProperty(c, v);
  G4cout << "The MPT for the world is now: " << G4endl;
  fWorldMPT->DumpTable();
  G4cout << "............." << G4endl;

}