GB01DetectorConstruction.cc

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#include "GB01DetectorConstruction.hh"
#include "G4SystemOfUnits.hh"

#include "G4Material.hh"
#include "G4NistManager.hh"

#include "G4Box.hh"
#include "G4LogicalVolume.hh"
#include "G4PVPlacement.hh"
#include "G4UniformMagField.hh"
#include "G4LogicalVolumeStore.hh"

#include "G4VisAttributes.hh"
#include "G4Colour.hh"

#include "G4NistManager.hh"

#include "GB01BOptrMultiParticleChangeCrossSection.hh"

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GB01DetectorConstruction::GB01DetectorConstruction()
{}

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GB01DetectorConstruction::~GB01DetectorConstruction()
{}

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G4VPhysicalVolume* GB01DetectorConstruction::Construct()
{
  G4Material*   worldMaterial = G4NistManager::Instance()->FindOrBuildMaterial("G4_Galactic");
  G4Material* defaultMaterial = G4NistManager::Instance()->FindOrBuildMaterial("G4_lN2");

  G4VSolid* solidWorld = new G4Box("World", 10*m, 10*m, 10*m );
  
  G4LogicalVolume* logicWorld = new G4LogicalVolume(solidWorld,       // its solid
                                                    worldMaterial,    // its material
                                                    "World");         // its name
  
  G4PVPlacement* physiWorld = new G4PVPlacement(0,                    // no rotation
                                                G4ThreeVector(),      // at (0,0,0)
                                                logicWorld,           // its logical volume
                                                "World",              // its name
                                                0,                    // its mother volume
                                                false,                // no boolean operation
                                                0);                   // copy number
  
  // -----------------------------------
  // -- volume where biasing is applied:
  // -----------------------------------
  G4double halfZ = 10*cm;
  G4VSolid* solidTest = new G4Box("test.solid", 1*m, 1*m, halfZ );
  
  G4LogicalVolume* logicTest = new G4LogicalVolume(solidTest,        // its solid
                                                   defaultMaterial,  // its material
                                                   "test.logical");  // its name

  new G4PVPlacement(0,                                               // no rotation
                    G4ThreeVector(0,0, halfZ),                       // volume entrance at (0,0,0)
                    logicTest,                                       // its logical volume
                    "test.phys",                                     // its name
                    logicWorld,                                      // its mother  volume
                    false,                                           // no boolean operation
                    0);                                              // copy number
  
  
  return physiWorld;
}

void GB01DetectorConstruction::ConstructSDandField()
{
  // -- Fetch volume for biasing:
  G4LogicalVolume* logicTest = G4LogicalVolumeStore::GetInstance()->GetVolume("test.logical");
  
  // ----------------------------------------------
  // -- operator creation and attachment to volume:
  // ----------------------------------------------
  GB01BOptrMultiParticleChangeCrossSection* testMany = 
    new GB01BOptrMultiParticleChangeCrossSection();
  testMany->AddParticle("gamma");
  testMany->AddParticle("neutron");
  testMany->AttachTo(logicTest);
  G4cout << " Attaching biasing operator " << testMany->GetName()
         << " to logical volume " << logicTest->GetName()
         << G4endl;
}