CbmBeam Class Reference

#include <CbmBeam.h>

Public Member Functions
	CbmBeam (Double_t x=0., Double_t y=0., Double_t z=0., Double_t thetaX=0., Double_t thetaY=0.)
	Default constructor. More...
virtual	~CbmBeam ()
	Destructor More...
TVector3	ExtrapolateToPlane (const TVector3 &point, const TVector3 &normal) const
	Extrapolation of the beam to a plane. More...
TVector3	GetDirection () const
	Beam direction vector return Direction vector (tx, ty, 1.) More...
TVector3	GetPosition () const
	Beam position vector in the focal plane. More...
Double_t	GetThetaX () const
	Beam angle in the x-z plane. More...
Double_t	GetThetaY () const
	Beam angle in the y-z plane. More...
std::string	ToString () const
	Info on current beam trajectory. More...

Private Attributes
TVector3	fPosition
	Position vector. More...
TVector3	fDirection
	Direction vector (dx/dz, dy/dz, 1.) More...

Detailed Description

Author

Volker Friese v.fri.nosp@m.ese@.nosp@m.gsi.d.nosp@m.e

Since

1 August 2019

Date

1 August 2019

Class describing a beam trajectory, which is assumed to be a straight line defined by a point and a direction vector. All parameters are defined w.r.t. the global coordinate system.

Definition at line 25 of file CbmBeam.h.

Constructor & Destructor Documentation

CbmBeam()

CbmBeam::CbmBeam	(	Double_t	x = 0.,
		Double_t	y = 0.,
		Double_t	z = 0.,
		Double_t	thetaX = 0.,
		Double_t	thetaY = 0.
	)

Default constructor.

Parameters

x	x position [cm]
y	y position [cm]
z	z position [cm]
thetaX	Angle in x-z plane [rad]
thetaY	Angle in y-z plane [rad]

Definition at line 13 of file CbmBeam.cxx.

~CbmBeam()

virtual CbmBeam::~CbmBeam ( )

inlinevirtual

Destructor

Definition at line 43 of file CbmBeam.h.

Member Function Documentation

ExtrapolateToPlane()

TVector3 CbmBeam::ExtrapolateToPlane	(	const TVector3 &	point,
		const TVector3 &	normal
	)		const

Extrapolation of the beam to a plane.

Parameters

point	Coordinates of a point in the plane
norm	A vector perpendicular to the plane

Returns

Intersection point of beam with the plane

The method returns the intersection point of the beam trajectory with a plane specified by an anchor point and a vector perpendicular to the plane. The latter need not be normalised.

Definition at line 24 of file CbmBeam.cxx.

References fDirection, and fPosition.

Referenced by CbmBeamProfile::ExtrapolateToPlane().

GetDirection()

TVector3 CbmBeam::GetDirection ( ) const

inline

Beam direction vector return Direction vector (tx, ty, 1.)

Definition at line 62 of file CbmBeam.h.

References fDirection.

GetPosition()

TVector3 CbmBeam::GetPosition ( ) const

inline

Beam position vector in the focal plane.

Returns

Position vector [cm]

Definition at line 68 of file CbmBeam.h.

References fPosition.

GetThetaX()

Double_t CbmBeam::GetThetaX ( ) const

inline

Beam angle in the x-z plane.

Returns

Beam angle in x-z [rad]

Definition at line 74 of file CbmBeam.h.

References fDirection.

GetThetaY()

Double_t CbmBeam::GetThetaY ( ) const

inline

Beam angle in the y-z plane.

Returns

Beam angle in y-z [rad]

Definition at line 80 of file CbmBeam.h.

References fDirection.

ToString()

std::string CbmBeam::ToString

(

)

const

Info on current beam trajectory.

Definition at line 39 of file CbmBeam.cxx.

References fDirection, and fPosition.

Member Data Documentation

fDirection

TVector3 CbmBeam::fDirection

private

Direction vector (dx/dz, dy/dz, 1.)

Definition at line 89 of file CbmBeam.h.

Referenced by ExtrapolateToPlane(), GetDirection(), GetThetaX(), GetThetaY(), and ToString().

fPosition

TVector3 CbmBeam::fPosition

private

Position vector.

Definition at line 88 of file CbmBeam.h.

Referenced by ExtrapolateToPlane(), GetPosition(), and ToString().

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

• CbmBeam.h
• CbmBeam.cxx