/scratch0/jsnuveri/BDSIM/BDSIMgit/bdsim/include/BDSMultipole.hh

/* BDSIM

19 May 2008 by Marchiori G.
17 Apr 2006 by Ilya Agapov

*/

#ifndef BDSMULTIPOLE_H
#define BDSMULTIPOLE_H

#include "BDSMagnet.hh"

#include "globals.hh"
#include "G4Material.hh"

#include <list>

struct BDSBeamPipeInfo;
struct BDSMagnetOuterInfo;

class BDSMultipole: public BDSMagnet
{
public:
  BDSMultipole(G4String            name,
               G4double            length,
               std::list<G4double> akn, // list of normal multipole strengths
               // (NOT multiplied by multipole length)
               std::list<G4double> aks, // list of skew multipole strengths
                                    // (NOT multiplied by multipole length)
               BDSBeamPipeInfo*    beamPipeInfo,
               BDSMagnetOuterInfo  magnetOuterInfo,
               BDSTiltOffset       tiltOffset = BDSTiltOffset());
  ~BDSMultipole(){;};
  
private:
  void CommonConstructor(std::list<G4double> akn, std::list<G4double> aks); 
  std::list<G4double> kn; // list of normal multipole strengths 1/Brho * Bn
                     // (NOT multiplied by multipole length)
  std::list<G4double> ks; // list of skew multipole strengths 1/Brho * Bsn
                     // (NOT multiplied by multipole length)
  G4int itsOrder;
  
  virtual void BuildBPFieldAndStepper();
};

#endif

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