BDSBendBuilder.hh

/* 
Beam Delivery Simulation (BDSIM) Copyright (C) BDSIM Collaboration, 2001 - 2026.
 
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 BDSBENDBUILDER_H
#define BDSBENDBUILDER_H
 
#include "globals.hh" // geant4 globals / types
#include "G4String.hh"
#include "BDSFieldType.hh"
#include "BDSIntegratorSetType.hh"
#include "BDSIntegratorType.hh"
 
class BDSAcceleratorComponent;
class BDSFieldInfo;
class BDSIntegratorSet;
class BDSLine;
class BDSMagnet;
class BDSMagnetStrength;
class BDSModulatorInfo;
 
namespace GMAD
{
  struct Element;
}
 
namespace BDS
{  
  BDSAcceleratorComponent* BuildSBendLine(const G4String&         elementName,
                                          const GMAD::Element*    element,
                                          BDSMagnetStrength*      st,
                                          G4double                brho,
                                          const BDSIntegratorSet* integratorSet,
                                          G4double                incomingFaceAngle,
                                          G4double                outgoingFaceAngle,
                                          G4bool                  buildFringeFields,
                                          const GMAD::Element*    prevElement,
                                          const GMAD::Element*    nextElement,
                                          BDSModulatorInfo*       fieldModulator = nullptr);
  
  BDSLine* BuildRBendLine(const G4String&         elementName,
                          const GMAD::Element*    element,
                          const GMAD::Element*    prevElement,
                          const GMAD::Element*    nextElement,
                          G4double                brho,
                          BDSMagnetStrength*      st,
                          const BDSIntegratorSet* integratorSet,
                          G4double                incomingFaceAngle,
                          G4double                outgoingFaceAngle,
                          G4bool                  buildFringeFields,
                          BDSModulatorInfo*       fieldModulator = nullptr);
 
  G4int CalculateNSBendSegments(G4double length,
                                G4double angle,
                                G4double incomingFaceAngle = 0,
                                G4double outgoingFaceAngle = 0,
                                G4double aperturePrecision = 1.0);
 
  BDSMagnet* BuildDipoleFringe(const GMAD::Element*     element,
                               G4double                 angleIn,
                               G4double                 angleOut,
                               const G4String&          name,
                               BDSMagnetStrength*       st,
                               G4double                 brho,
                               const BDSIntegratorSet*  integratorSet,
                               BDSFieldType             dipoleFieldType,
                               BDSModulatorInfo*        fieldModulator = nullptr);
 
  BDSMagnet* BuildSingleSBend(const GMAD::Element*     element,
                              const G4String&          name,
                              G4double                 arcLength,
                              G4double                 angle,
                              G4double                 angleIn,
                              G4double                 angleOut,
                              const BDSMagnetStrength* strength,
                              G4double                 brho,
                              const BDSIntegratorSet*  integratorSet,
                              G4bool                   yokeOnLeft,
                              const BDSFieldInfo*      outerFieldIn,
                              BDSModulatorInfo*        fieldModulator = nullptr);
  
  void UpdateSegmentAngles(G4int     index,
                           G4int     nSBends,
                           G4double  semiAngle,
                           G4double  incomingFaceAngle,
                           G4double  outgoingFaceAngle,
                           G4double& segmentAngleIn,
                           G4double& segmentAngleOut);
 
  BDSMagnetStrength* GetFringeMagnetStrength(const GMAD::Element* element,
                                             const BDSMagnetStrength*  st,
                                             G4double            fringeAngle,
                                             G4double            e1,
                                             G4double            e2,
                                             G4double            fintx,
                                             G4bool              entranceOrExit);
  
  BDSIntegratorType GetDipoleIntegratorType(const BDSIntegratorSet* integratorSet,
                                            const GMAD::Element*    element);
 
  G4bool ZeroStrengthDipole(const BDSMagnetStrength* st);
}
 
#endif