ExUCNDetectorConstruction Class Reference

#include <ExUCNDetectorConstruction.hh>

Inheritance diagram for ExUCNDetectorConstruction:

Collaboration diagram for ExUCNDetectorConstruction:

Public Member Functions
	ExUCNDetectorConstruction ()
virtual	~ExUCNDetectorConstruction ()
virtual G4VPhysicalVolume *	Construct ()
virtual void	ConstructSDandField ()
Public Member Functions inherited from G4VUserDetectorConstruction
	G4VUserDetectorConstruction ()
virtual	~G4VUserDetectorConstruction ()
virtual void	CloneSD ()
virtual void	CloneF ()
void	RegisterParallelWorld (G4VUserParallelWorld *)
G4int	ConstructParallelGeometries ()
void	ConstructParallelSD ()
G4int	GetNumberOfParallelWorld () const
G4VUserParallelWorld *	GetParallelWorld (G4int i) const

Additional Inherited Members
Protected Member Functions inherited from G4VUserDetectorConstruction
void	SetSensitiveDetector (const G4String &logVolName, G4VSensitiveDetector *aSD, G4bool multi=false)
void	SetSensitiveDetector (G4LogicalVolume *logVol, G4VSensitiveDetector *aSD)

Detailed Description

Definition at line 47 of file ExUCNDetectorConstruction.hh.

Constructor & Destructor Documentation

ExUCNDetectorConstruction::ExUCNDetectorConstruction

(

)

Definition at line 74 of file ExUCNDetectorConstruction.cc.

 : fVacuum(0), fGuideMaterial(0)
{
  // materials
  DefineMaterials();
}

ExUCNDetectorConstruction::~ExUCNDetectorConstruction ( )

virtual

Definition at line 83 of file ExUCNDetectorConstruction.cc.

{
  if (fField) delete fField;
}

Member Function Documentation

G4VPhysicalVolume * ExUCNDetectorConstruction::Construct ( void  )

virtual

Implements G4VUserDetectorConstruction.

Definition at line 126 of file ExUCNDetectorConstruction.cc.

{
  //
  // World
  //

  G4double worldSizeX =   1.*m;
  G4double worldSizeY =   1.*m;
  G4double worldSizeZ = 100.*m;

  G4Box* solidWorld = new G4Box("World",
                                worldSizeX/2.,worldSizeY/2.,worldSizeZ/2.);

  G4LogicalVolume* logicWorld = new G4LogicalVolume(solidWorld,
                                                    fVacuum,
                                                    "World");

  G4VPhysicalVolume* physiWorld = new G4PVPlacement(0,
                                                    G4ThreeVector(),
                                                    "World",
                                                    logicWorld,
                                                    0,
                                                    false,
                                                    0);

// --------------------------------- Guide -------------------------------------

  G4double GuideR = 35.*mm;
  G4double GuideW =  2.*mm;
  G4double GuideL =  6.*m;

  G4Tubs* solidGuide = new G4Tubs("SolidGuide",
                                  GuideR,GuideR+GuideW,GuideL/2.,0.,twopi);

  G4LogicalVolume* logicGuide = new G4LogicalVolume(solidGuide,
                                                    fGuideMaterial,
                                                    "Guide");

  new G4PVPlacement(0,G4ThreeVector(),"Guide",logicGuide,physiWorld,false,0);

// ------------------------------ End Plate  -----------------------------------

  G4Tubs* solidEndPlate = new G4Tubs("EndPlate",0.,GuideR,GuideW/2.,0.,twopi);

  G4LogicalVolume* logicEndPlate = new G4LogicalVolume(solidEndPlate,
                                                       fVacuum,
                                                       "EndPlate");

  G4ThreeVector endPlatePos = G4ThreeVector(0.,0.,GuideL/2.+GuideW/2.);

  new G4PVPlacement(0,endPlatePos,"EndPlate",logicEndPlate,physiWorld,false,0);

  G4double maxStep = 1.0*mm;
  G4double maxTime = 100.*s;

  G4UserLimits* stepLimit = new G4UserLimits(maxStep,DBL_MAX,maxTime);

  logicWorld->SetUserLimits(stepLimit);
 
  //
  // Visualization attributes
  //

  G4VisAttributes* guideColor = new G4VisAttributes(G4Colour(0.0,0.0,1.0));
  guideColor->SetVisibility(true);
  guideColor->SetForceWireframe(true);

  G4VisAttributes* endPlateColor = new G4VisAttributes(G4Colour(1.0,0.0,0.0));
  endPlateColor->SetVisibility(true);
  endPlateColor->SetForceSolid(true);

  logicWorld->SetVisAttributes(G4VisAttributes::GetInvisible());
  logicGuide->SetVisAttributes(guideColor);
  logicEndPlate->SetVisAttributes(endPlateColor);

  //
  //always return the physical World
  //
  return physiWorld;
}

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void ExUCNDetectorConstruction::ConstructSDandField ( )

virtual

Reimplemented from G4VUserDetectorConstruction.

Definition at line 211 of file ExUCNDetectorConstruction.cc.

{
  if (!fField) {

     fField = new G4UniformGravityField();

     G4RepleteEofM* equation = new G4RepleteEofM(fField);
//     G4RepleteEofM* equation = new G4RepleteEofM(fField,12);
//     G4EqGravityField* equation = new G4EqGravityField(fField);

     G4FieldManager* fieldManager
      = G4TransportationManager::GetTransportationManager()->GetFieldManager();
     fieldManager->SetDetectorField(fField);

     G4MagIntegratorStepper* stepper = new G4ClassicalRK4(equation,8);
//     G4MagIntegratorStepper* stepper = new G4ClassicalRK4(equation,12);

     G4double minStep           = 0.01*mm;

     G4ChordFinder* chordFinder = 
                   new G4ChordFinder((G4MagneticField*)fField,minStep,stepper);

     // Set accuracy parameters
     G4double deltaChord        = 3.0*mm;
     chordFinder->SetDeltaChord( deltaChord );

     G4double deltaOneStep      = 0.01*mm;
     fieldManager->SetAccuraciesWithDeltaOneStep(deltaOneStep);

     G4double deltaIntersection = 0.1*mm;
     fieldManager->SetDeltaIntersection(deltaIntersection);

     G4TransportationManager* transportManager =
                           G4TransportationManager::GetTransportationManager();

     G4PropagatorInField* fieldPropagator =
                                      transportManager->GetPropagatorInField();

     G4double epsMin            = 2.5e-7*mm;
     G4double epsMax            = 0.05*mm;

     fieldPropagator->SetMinimumEpsilonStep(epsMin);
     fieldPropagator->SetMaximumEpsilonStep(epsMax);

     fieldManager->SetChordFinder(chordFinder);
  }
}

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The documentation for this class was generated from the following files:

• source/geant4.10.03.p02/examples/extended/exoticphysics/ucn/include/ExUCNDetectorConstruction.hh
• source/geant4.10.03.p02/examples/extended/exoticphysics/ucn/src/ExUCNDetectorConstruction.cc