BrachyDetectorConstruction.cc

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//
// --------------------------------------------------------------
//                 GEANT 4 - Brachytherapy example
// --------------------------------------------------------------
//
// Code developed by:
// S. Agostinelli, F. Foppiano, S. Garelli , M. Tropeano, S.Guatelli
//
//
//    ****************************************
//    *                                      *
//    *    BrachyDetectorConstruction.cc     *
//    *                                      *
//    ****************************************
//
#include "G4SystemOfUnits.hh"
#include "G4CSGSolid.hh"
#include "G4MaterialPropertyVector.hh"
#include "G4SDManager.hh"
#include "G4RunManager.hh"
#include "G4Box.hh"
#include "G4LogicalVolume.hh"
#include "G4ThreeVector.hh"
#include "G4PVPlacement.hh"
#include "globals.hh"
#include "G4MaterialTable.hh"
#include "G4TransportationManager.hh"
#include "G4Colour.hh"
#include "G4UserLimits.hh"
#include "G4VisAttributes.hh"
#include "BrachyMaterial.hh"
#include "BrachyFactoryLeipzig.hh"
#include "BrachyFactoryIr.hh"
#include "BrachyFactoryI.hh"
#include "BrachyDetectorMessenger.hh"
#include "BrachyDetectorConstruction.hh"

BrachyDetectorConstruction::BrachyDetectorConstruction()
: detectorChoice(0), factory(0),
  World(0), WorldLog(0), WorldPhys(0),
  Phantom(0), PhantomLog(0), PhantomPhys(0),
  phantomAbsorberMaterial(0)
{
  // Define half size of the phantom along the x, y, z axis
  phantomSizeX = 15.*cm ;
  phantomSizeY = 15.*cm;
  phantomSizeZ = 15.*cm;
  
  // Define the sizes of the World volume containing the phantom
  worldSizeX = 4.0*m;
  worldSizeY = 4.0*m;
  worldSizeZ = 4.0*m;

  // Define the messenger of the Detector component
  // It is possible to modify geometrical parameters through UI
  detectorMessenger = new BrachyDetectorMessenger(this);

  // Define the Iridium source as default source modelled in the geometry
  factory = new BrachyFactoryIr();

  // BrachyMaterial defined the all the materials necessary
  // for the experimental set-up 
  pMaterial = new BrachyMaterial();
}

BrachyDetectorConstruction::~BrachyDetectorConstruction()
{ 
  delete pMaterial;
  delete factory;
  delete detectorMessenger;
}

G4VPhysicalVolume* BrachyDetectorConstruction::Construct()
{
  pMaterial -> DefineMaterials();
 
  // Model the phantom (water box)  
  ConstructPhantom();

  // Model the source in the phantom
  factory -> CreateSource(PhantomPhys); 

  return WorldPhys;
}

void BrachyDetectorConstruction::SwitchBrachytherapicSeed()
{
  // Change the source in the water phantom
  factory -> CleanSource();
  delete factory;

  switch(detectorChoice)
  { 
    case 1:
      factory = new BrachyFactoryI();
      break;
    case 2:
      factory = new BrachyFactoryLeipzig();
      break;
    case 3:
      factory = new BrachyFactoryIr();
      break;   
    default:
      factory = new BrachyFactoryIr();
      break;
  }

  factory -> CreateSource(PhantomPhys);

  // Notify run manager that the new geometry has been built
  G4RunManager::GetRunManager() -> DefineWorldVolume( WorldPhys );
}

void BrachyDetectorConstruction::SelectBrachytherapicSeed(G4String val)
{
  if(val == "Iodium") 
  {
   detectorChoice = 1;
  }
  else
  {
    if(val=="Leipzig")
    {
      detectorChoice = 2;
    }
    else
    {
      if(val=="Iridium")
      {
        detectorChoice = 3;
      }
    }
  }

  G4cout << "Now the source is " << val << G4endl;
}

void BrachyDetectorConstruction::ConstructPhantom()
{
  // Model the water phantom 
  
  // Define the light blue color
  G4Colour  lblue   (0.0, 0.0, .75);

  G4Material* air = pMaterial -> GetMat("Air") ;
  G4Material* water = pMaterial -> GetMat("Water");

  // World volume
  World = new G4Box("World",worldSizeX,worldSizeY,worldSizeZ);
  WorldLog = new G4LogicalVolume(World,air,"WorldLog",0,0,0);
  WorldPhys = new G4PVPlacement(0,G4ThreeVector(),
                                "WorldPhys",WorldLog,0,false,0);

  // Water Box
  Phantom = new G4Box("Phantom",phantomSizeX,phantomSizeY,
                       phantomSizeZ);

  // Logical volume
  PhantomLog = new G4LogicalVolume(Phantom,water,"PhantomLog",0,0,0);

  // Physical volume
  PhantomPhys = new G4PVPlacement(0,G4ThreeVector(), // Position: rotation and translation
                                  "PhantomPhys", // Name
                  PhantomLog, // Associated logical volume
                                  WorldPhys, // Mother volume
                  false,0); 

  WorldLog -> SetVisAttributes (G4VisAttributes::Invisible);

  // Visualization attributes of the phantom
  G4VisAttributes* simpleBoxVisAtt = new G4VisAttributes(lblue);
  simpleBoxVisAtt -> SetVisibility(true);
  simpleBoxVisAtt -> SetForceWireframe(true);
  PhantomLog -> SetVisAttributes(simpleBoxVisAtt);
}


void BrachyDetectorConstruction::PrintDetectorParameters()
{
  G4cout << "-----------------------------------------------------------------------"
         << G4endl
         << "the phantom is a water box whose size is: " << G4endl
         << phantomSizeX *2./cm
         << " cm * "
         << phantomSizeY *2./cm
         << " cm * "
         << phantomSizeZ *2./cm
         << " cm" << G4endl
         << "The phantom is made of "
         << phantomAbsorberMaterial -> GetName() <<G4endl
         << "the source is at the center of the phantom" << G4endl
         << "-------------------------------------------------------------------------"
         << G4endl;
}

void BrachyDetectorConstruction::SetPhantomMaterial(G4String materialChoice)
{
  // It is possible to change the material of the phantom
  // interactively

  // Search the material by its name   
  G4Material* pttoMaterial = G4Material::GetMaterial(materialChoice);     
  if (pttoMaterial)
  {
    phantomAbsorberMaterial = pttoMaterial;
    PhantomLog -> SetMaterial(pttoMaterial); 
    PrintDetectorParameters();
  } 
  else
    G4cout << "WARNING: material '" << materialChoice
           << "' not available!" << G4endl;            
}