G4EqGravityField Class Reference

#include <G4EqGravityField.hh>

Inheritance diagram for G4EqGravityField:

Public Member Functions
	G4EqGravityField (G4UniformGravityField *gField)
	~G4EqGravityField ()
void	SetChargeMomentumMass (G4double particleCharge, G4double MomentumXc, G4double mass)
void	EvaluateRhsGivenB (const G4double y[], const G4double Field[], G4double dydx[]) const

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Detailed Description

Definition at line 49 of file G4EqGravityField.hh.

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Constructor & Destructor Documentation

G4EqGravityField::G4EqGravityField

(

G4UniformGravityField *

gField

)

[inline]

Definition at line 53 of file G4EqGravityField.hh.

      : G4EquationOfMotion( gField ) {;}

G4EqGravityField::~G4EqGravityField

(

)

[inline]

Definition at line 56 of file G4EqGravityField.hh.

{;}

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Member Function Documentation

void G4EqGravityField::EvaluateRhsGivenB	(	const G4double	y[],
		const G4double	Field[],
		G4double	dydx[]
	)			const

Definition at line 52 of file G4EqGravityField.cc.

{

  // Components of y:
  //    0-2 dr/ds,
  //    3-5 dp/ds - momentum derivatives

  G4double momentum_mag_square = y[3]*y[3] + y[4]*y[4] + y[5]*y[5];
  G4double inv_momentum_magnitude = 1.0 / std::sqrt( momentum_mag_square );

  G4double Energy = std::sqrt(momentum_mag_square + fMass*fMass);
  G4double cof2 = Energy/c_light;
  G4double cof1 = inv_momentum_magnitude*fMass;
  G4double inverse_velocity = Energy*inv_momentum_magnitude/c_light;

  dydx[0] = y[3]*inv_momentum_magnitude;       //  (d/ds)x = Vx/V
  dydx[1] = y[4]*inv_momentum_magnitude;       //  (d/ds)y = Vy/V
  dydx[2] = y[5]*inv_momentum_magnitude;       //  (d/ds)z = Vz/V

  dydx[3] = G[0]*cof1*cof2;
  dydx[4] = G[1]*cof1*cof2;                    //  m*g
  dydx[5] = G[2]*cof1*cof2;

  // Lab Time of flight
  dydx[7] = inverse_velocity;

  return;
}

void G4EqGravityField::SetChargeMomentumMass	(	G4double	particleCharge,
		G4double	MomentumXc,
		G4double	mass
	)			[virtual]

Implements G4EquationOfMotion.

Definition at line 44 of file G4EqGravityField.cc.

{
  fMass = particleMass;
}

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

• G4EqGravityField.hh
• G4EqGravityField.cc

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