Geant4 11.2.2
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 () override
 
void SetChargeMomentumMass (G4ChargeState particleCharge, G4double MomentumXc, G4double mass) override
 
void EvaluateRhsGivenB (const G4double y[], const G4double Field[], G4double dydx[]) const override
 
- 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
 
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.

43 : G4EquationOfMotion( emField )
44{
45}
G4EquationOfMotion(G4Field *Field)

◆ ~G4EqMagElectricField()

G4EqMagElectricField::~G4EqMagElectricField ( )
overridedefault

Member Function Documentation

◆ EvaluateRhsGivenB()

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

Definition at line 60 of file G4EqMagElectricField.cc.

63{
64 // Components of y:
65 // 0-2 dr/ds,
66 // 3-5 dp/ds - momentum derivatives
67
68 G4double pSquared = y[3]*y[3] + y[4]*y[4] + y[5]*y[5] ;
69
70 G4double Energy = std::sqrt( pSquared + fMassCof );
71 G4double cof2 = Energy/c_light ;
72
73 G4double pModuleInverse = 1.0/std::sqrt(pSquared) ;
74
75 G4double inverse_velocity = Energy * pModuleInverse / c_light;
76
77 G4double cof1 = fElectroMagCof*pModuleInverse ;
78
79 dydx[0] = y[3]*pModuleInverse ;
80 dydx[1] = y[4]*pModuleInverse ;
81 dydx[2] = y[5]*pModuleInverse ;
82
83 dydx[3] = cof1*(cof2*Field[3] + (y[4]*Field[2] - y[5]*Field[1])) ;
84
85 dydx[4] = cof1*(cof2*Field[4] + (y[5]*Field[0] - y[3]*Field[2])) ;
86
87 dydx[5] = cof1*(cof2*Field[5] + (y[3]*Field[1] - y[4]*Field[0])) ;
88
89 dydx[6] = 0.;//not used
90
91 // Lab Time of flight
92 //
93 dydx[7] = inverse_velocity;
94
95 return;
96}
double G4double
Definition G4Types.hh:83

◆ SetChargeMomentumMass()

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

Implements G4EquationOfMotion.

Definition at line 50 of file G4EqMagElectricField.cc.

53{
54 G4double pcharge = particleCharge.GetCharge();
55 fElectroMagCof = eplus*pcharge*c_light ;
56 fMassCof = particleMass*particleMass ;
57}
G4double GetCharge() const

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