H8FieldSvc.h

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/*
  Copyright (C) 2002-2022 CERN for the benefit of the ATLAS collaboration
*/
 
//
// H8FieldSvc.h
//
// Magnetic field map of the H8 beam test
//
// Masahiro Morii, Harvard University
//
#ifndef H8FIELDSVC_H
#define H8FIELDSVC_H
 
// FrameWork includes
#include "AthenaBaseComps/AthService.h"
 
// MagField includes
#include "MagFieldInterfaces/IMagFieldSvc.h"
#include "BFieldH8Grid.h"
 
// STL includes
#include <vector>
#include <string>
 
// forward declarations
class CondAttrListCollection;
 
namespace MagField {
 
  class H8FieldSvc : public extends<AthService, IMagFieldSvc> {
    public:
 
      //** Constructor with parameters */
      H8FieldSvc( const std::string& name, ISvcLocator* pSvcLocator );
 
      virtual ~H8FieldSvc();
 
      StatusCode  initialize();
      StatusCode  start();
      StatusCode  finalize();
 
      virtual void getField( const double *xyz, double *bxyz, double *deriv = nullptr ) const;
      virtual void getFieldZR( const double *xyz, double *bxyz, double *deriv = nullptr ) const;
 
    private:
      // initialize map
      StatusCode initializeMap();
      // read the field map
      StatusCode readMap( const std::string& mapFile );
 
      // field map name
      std::string m_H8MapFilename;
 
      // field data
      std::vector<BFieldH8Grid> m_grid;
 
      // first magnet offset
      double m_dx1;
      double m_dy1;
      double m_dz1;
      // second magnet offset
      double m_dx2;
      double m_dy2;
      double m_dz2;
 
  };
}
 
#endif