BDSFieldMagDipoleEnge.hh

/* 
Beam Delivery Simulation (BDSIM) Copyright (C) Royal Holloway, 
University of London 2001 - 2024.
 
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 BDSFIELDMAGDIPOLEENGE_H
#define BDSFIELDMAGDIPOLEENGE_H
 
#include "BDSFieldMag.hh"
 
#include "globals.hh"
#include "G4ThreeVector.hh"
 
class BDSMagnetStrength;
 
class BDSFieldMagDipoleEnge: public BDSFieldMag
{
public:
  BDSFieldMagDipoleEnge() = delete;
 
  
  BDSFieldMagDipoleEnge(G4double strength,
                        G4double apertureRadius,
                        G4double coilLength,
                        G4double engeCoefficient);
 
  virtual ~BDSFieldMagDipoleEnge(){;}
 
  virtual G4ThreeVector GetField(const G4ThreeVector& position,
                                 const G4double       t = 0) const;
 
  inline G4double GetB0() const {return B0;} 
 
private:
  G4ThreeVector QueryField(G4double y, G4double z) const;
 
  G4double D;
  G4double halfLength;
  G4double B0;
  G4double engeCoeff;
};
 
#endif