F02ElectricFieldSetup.hh

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// $Id: F02ElectricFieldSetup.hh 104216 2017-05-18 13:45:22Z gcosmo $
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#ifndef F02ElectricFieldSetup_h
#define F02ElectricFieldSetup_h 1

#include "G4ElectricField.hh"
#include "G4UniformElectricField.hh"

class G4FieldManager;
class G4ChordFinder;
class G4EquationOfMotion;
class G4Mag_EqRhs;
class G4EqMagElectricField;
class G4MagIntegratorStepper;
class G4MagInt_Driver;
class F02FieldMessenger;


class F02ElectricFieldSetup
{
public:
  F02ElectricFieldSetup(G4ThreeVector);  //  The value of the field
  F02ElectricFieldSetup();               //  A zero field - true value set later

  virtual ~F02ElectricFieldSetup();

   // Methods to set parameters or select 
  void SetStepperType( G4int i) { fStepperType = i ; CreateStepper(); }

  void SetMinStep(G4double s) { fMinStep = s ; }

  void SetFieldValue(G4ThreeVector fieldVector);
  void SetFieldValue(G4double      fieldValue);
  G4ThreeVector GetConstantFieldValue();
   // Set/Get Field strength in Geant4 units

  void UpdateIntegrator();
   // Prepare all the classes required for tracking - from stepper 
   //    to Chord-Finder
   //   NOTE:  field and equation must have been created before calling this.
   
protected:

  // Find the global Field Manager

  G4FieldManager*         GetGlobalFieldManager();

  void CreateStepper();
   // Implementation method - should not be exposed

private:
  G4double                fMinStep;
  G4bool                  fVerbose;

  G4FieldManager*         fFieldManager;

  G4ChordFinder*          fChordFinder;

  G4EqMagElectricField*   fEquation;

  G4ElectricField*        fEMfield;
 
  G4ThreeVector           fElFieldValue;

  G4MagIntegratorStepper* fStepper;
  G4MagInt_Driver*        fIntgrDriver;

  G4int                   fStepperType;

   
  F02FieldMessenger*      fFieldMessenger;

};

#endif