Geant4 11.1.1
Toolkit for the simulation of the passage of particles through matter
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G4EqMagElectricField Class Reference

#include <G4EqMagElectricField.hh>

+ Inheritance diagram for G4EqMagElectricField:

Public Member Functions

 G4EqMagElectricField (G4ElectroMagneticField *emField)
 
 ~G4EqMagElectricField ()
 
void SetChargeMomentumMass (G4ChargeState particleCharge, G4double MomentumXc, G4double mass)
 
void EvaluateRhsGivenB (const G4double y[], const G4double Field[], G4double dydx[]) const
 
- Public Member Functions inherited from G4EquationOfMotion
 G4EquationOfMotion (G4Field *Field)
 
virtual ~G4EquationOfMotion ()
 
virtual void EvaluateRhsGivenB (const G4double y[], const G4double B[3], G4double dydx[]) const =0
 
virtual void SetChargeMomentumMass (G4ChargeState particleCharge, G4double MomentumXc, G4double MassXc2)=0
 
void RightHandSide (const G4double y[], G4double dydx[]) const
 
void EvaluateRhsReturnB (const G4double y[], G4double dydx[], G4double Field[]) const
 
void GetFieldValue (const G4double Point[4], G4double Field[]) const
 
const G4FieldGetFieldObj () const
 
G4FieldGetFieldObj ()
 
void SetFieldObj (G4Field *pField)
 

Detailed Description

Definition at line 42 of file G4EqMagElectricField.hh.

Constructor & Destructor Documentation

◆ G4EqMagElectricField()

G4EqMagElectricField::G4EqMagElectricField ( G4ElectroMagneticField emField)

Definition at line 42 of file G4EqMagElectricField.cc.

◆ ~G4EqMagElectricField()

G4EqMagElectricField::~G4EqMagElectricField ( )

Definition at line 47 of file G4EqMagElectricField.cc.

48{
49}

Member Function Documentation

◆ EvaluateRhsGivenB()

void G4EqMagElectricField::EvaluateRhsGivenB ( const G4double  y[],
const G4double  Field[],
G4double  dydx[] 
) const

Definition at line 62 of file G4EqMagElectricField.cc.

65{
66 // Components of y:
67 // 0-2 dr/ds,
68 // 3-5 dp/ds - momentum derivatives
69
70 G4double pSquared = y[3]*y[3] + y[4]*y[4] + y[5]*y[5] ;
71
72 G4double Energy = std::sqrt( pSquared + fMassCof );
73 G4double cof2 = Energy/c_light ;
74
75 G4double pModuleInverse = 1.0/std::sqrt(pSquared) ;
76
77 G4double inverse_velocity = Energy * pModuleInverse / c_light;
78
79 G4double cof1 = fElectroMagCof*pModuleInverse ;
80
81 dydx[0] = y[3]*pModuleInverse ;
82 dydx[1] = y[4]*pModuleInverse ;
83 dydx[2] = y[5]*pModuleInverse ;
84
85 dydx[3] = cof1*(cof2*Field[3] + (y[4]*Field[2] - y[5]*Field[1])) ;
86
87 dydx[4] = cof1*(cof2*Field[4] + (y[5]*Field[0] - y[3]*Field[2])) ;
88
89 dydx[5] = cof1*(cof2*Field[5] + (y[3]*Field[1] - y[4]*Field[0])) ;
90
91 dydx[6] = 0.;//not used
92
93 // Lab Time of flight
94 //
95 dydx[7] = inverse_velocity;
96
97 return;
98}
double G4double
Definition: G4Types.hh:83

◆ SetChargeMomentumMass()

void G4EqMagElectricField::SetChargeMomentumMass ( G4ChargeState  particleCharge,
G4double  MomentumXc,
G4double  mass 
)
virtual

Implements G4EquationOfMotion.

Definition at line 52 of file G4EqMagElectricField.cc.

55{
56 G4double pcharge = particleCharge.GetCharge();
57 fElectroMagCof = eplus*pcharge*c_light ;
58 fMassCof = particleMass*particleMass ;
59}
G4double GetCharge() const

The documentation for this class was generated from the following files: