Reconstruction/MdcPatRec/BField/BField-00-01-02/src/BField.cxx

Go to the documentation of this file.

//--------------------------------------------------------------------------
// File and Version Information:
//  $Id: BField.cxx,v 1.2 2008/09/17 08:30:39 zhangy Exp $
//
// Description:
//  Class BField; encapsulates the magnetic field.
//
//      See header for more info.  
//
// Environment:
//  Software developed for the BESIII Detector at BEPCII
//
// Author List:
//  Bob Jacobsen        Original Author
//  Zhang Yao       Only keep nominal field
//
// Copyright Information:
//  Copyright (C) 1995  Lawrence Berkeley Laboratory
//
//------------------------------------------------------------------------
 
//-----------------------
// This Class's Header --
//-----------------------
#include <iostream>
#include "BField/BField.h"
#include "MdcGeom/Constants.h"
 
const double BField::cmTeslaToGeVc = Constants::c/1.0E13;
const double BField::gaussToTesla = 1000.;
 
//constructor
BField::BField(IMagneticFieldSvc* magSvc)
 
{ m_pIMF = magSvc;}
 
// destroy
BField::~BField() {}        
 
// field z of nominal field 
double
BField::bFieldZ() const
{
  return m_pIMF->getReferField()*gaussToTesla;
}
 
void BField::print()const
{
  std::cout << "Default constant field" << std::endl;
  std::cout << "nominal Field: " << bFieldNominal() << std::endl;
}
 
double
BField::bFieldNominal()const
{
  return bFieldZ();
}