BDSFieldESinusoid.hh

/* 
Beam Delivery Simulation (BDSIM) Copyright (C) Royal Holloway, 
University of London 2001 - 2023.
 
This file is part of BDSIM.
 
BDSIM is free software: you can redistribute it and/or modify 
it under the terms of the GNU General Public License as published 
by the Free Software Foundation version 3 of the License.
 
BDSIM is distributed in the hope that it will be useful, but 
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.
 
You should have received a copy of the GNU General Public License
along with BDSIM.  If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef BDSFIELDESINUSOID_H
#define BDSFIELDESINUSOID_H
 
#include "BDSFieldE.hh"
 
#include "globals.hh" // geant4 types / globals
#include "G4ThreeVector.hh"
 
class BDSCavityInfo;
class BDSMagnetStrength;
 
class BDSFieldESinusoid: public BDSFieldE
{
public:
  BDSFieldESinusoid() = delete;
  BDSFieldESinusoid(BDSMagnetStrength const* strength,
                    G4double                 brho);
 
  BDSFieldESinusoid(G4double eFieldAmplitude,
                    const G4ThreeVector& unitDirectionIn,
                    G4double frequencyIn,
                    G4double phaseOffsetIn);
 
  virtual ~BDSFieldESinusoid(){;}
  
  virtual G4bool TimeVarying() const {return true;}
 
  virtual G4ThreeVector GetField(const G4ThreeVector& position,
                                 const G4double       t) const;
 
protected:
  G4double eField;
  
  const G4ThreeVector unitDirection;
  
private:
  G4double angularFrequency;
 
  G4double phase;
};
 
#endif