G4Mag_EqRhs.cc

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//
// $Id: G4Mag_EqRhs.cc 69699 2013-05-13 08:50:30Z gcosmo $
//
//  This is the standard right-hand side for equation of motion  
//    in a pure Magnetic Field .
//
//   Other that might be required are:
//     i) is when using a moving reference frame ... or
//    ii) extending for other forces, eg an electric field
//
//            J. Apostolakis, January 13th, 1997
//
// --------------------------------------------------------------------

#include "G4MagneticField.hh"
#include "G4Mag_EqRhs.hh"
#include "globals.hh"
#include "G4PhysicalConstants.hh"
#include "G4SystemOfUnits.hh"

const G4double G4Mag_EqRhs::fUnitConstant = 0.299792458 * (GeV/(tesla*m)); 

// Constructor Implementation
//
G4Mag_EqRhs::G4Mag_EqRhs( G4MagneticField *magField ) 
   : G4EquationOfMotion(magField), fCof_val(0.)
{ 
}

void  
G4Mag_EqRhs::SetChargeMomentumMass( G4ChargeState particleCharge,
                                    G4double,                // MomentumXc
                                    G4double )               // particleMass
{
   G4double pcharge = particleCharge.GetCharge();
   fCof_val = pcharge*eplus*c_light ; //  B must be in Tesla
   //  fCof_val = fUnitConstant*pcharge/MomentumXc; //  B must be in Tesla
   // fMass = particleMass;
}

G4Mag_EqRhs::~G4Mag_EqRhs() { }