A01RootDetectorConstruction Class Reference

The detector construction (via TGeo ) More...

#include <A01RootDetectorConstruction.h>

Inheritance diagram for A01RootDetectorConstruction:

Public Member Functions
	A01RootDetectorConstruction (const TString &geometryFileName)
virtual	~A01RootDetectorConstruction ()
void	ConstructGeometry ()
void	SetUseLocalMagField (Bool_t localMagField)

Private Attributes
TString	fGeometryFileName
	The root geometry file name.
Bool_t	fUseLocalMagField
	Option to use local magnetic field (working only with Geant4 !)

Detailed Description

The detector construction (via TGeo )

Date

12/05/2012

Author

I. Hrivnacova; IPN, Orsay

Definition at line 29 of file A01RootDetectorConstruction.h.

Constructor & Destructor Documentation

A01RootDetectorConstruction()

A01RootDetectorConstruction::A01RootDetectorConstruction

(

const TString &

geometryFileName

)

Standard constuctor

Parameters

geometryFileName

The root geometry file name

Definition at line 31 of file A01RootDetectorConstruction.cxx.

  : TObject(), fGeometryFileName(geometryFileName), fUseLocalMagField(false)
{
  /// Standard constuctor
  /// \param geometryFileName The root geometry file name
}

~A01RootDetectorConstruction()

A01RootDetectorConstruction::~A01RootDetectorConstruction ( )

virtual

Destructor

Definition at line 40 of file A01RootDetectorConstruction.cxx.

{
  /// Destructor
}

Member Function Documentation

ConstructGeometry()

void A01RootDetectorConstruction::ConstructGeometry

(

)

Contruct volumes using TGeo modeller

Definition at line 50 of file A01RootDetectorConstruction.cxx.

{
  /// Contruct volumes using TGeo modeller
 
  TGeoManager::Import(fGeometryFileName.Data());
 
  // Update media parameters (needed for Geant3)
  TList* media = gGeoManager->GetListOfMedia();
  TIter next(media);
  while (TObject* obj = next()) {
    TGeoMedium* medium = (TGeoMedium*)obj;
    medium->SetParam(1, 2);    // ifield - User defined magnetic field
    medium->SetParam(2, 10);   // fieldm - Maximum field value (in kiloGauss)
    medium->SetParam(6, .001); // epsil - Tracking precision
  }
 
  // Create local magnetic field
  if (fUseLocalMagField) {
    // Constant magnetic field (in kiloGauss)
    // field value: 1.0*tesla (= 10.0 kiloGauss) in y
    TVirtualMagField* magField = new A01LocalMagField(0, 10.0, 0);
 
    // set the field to "magneticLogical" volume
    TGeoVolume* magneticVolume = gGeoManager->FindVolumeFast("magneticLogical");
    if (magneticVolume) {
      magneticVolume->SetField(magField);
    }
    else {
      std::cerr << "The Tube volume was not found in geometry." << std::endl;
      std::cerr << "Local magnetic field has not been set." << std::endl;
      delete magField;
    }
  }
  // notify VMC about Root geometry
  gMC->SetRootGeometry();
}

SetUseLocalMagField()

void A01RootDetectorConstruction::SetUseLocalMagField ( Bool_t localMagField )

inline

Set the option to use local magnetic field (working only with Geant4 !)

Parameters

localMagField

The new value of the option

Definition at line 55 of file A01RootDetectorConstruction.h.

{
  fUseLocalMagField = localMagField;
}

Member Data Documentation

fGeometryFileName

TString A01RootDetectorConstruction::fGeometryFileName

private

The root geometry file name.

Definition at line 43 of file A01RootDetectorConstruction.h.

fUseLocalMagField

Bool_t A01RootDetectorConstruction::fUseLocalMagField

private

Option to use local magnetic field (working only with Geant4 !)

Definition at line 46 of file A01RootDetectorConstruction.h.

---

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

• examples/A01/include/A01RootDetectorConstruction.h
• examples/A01/src/A01RootDetectorConstruction.cxx