A cylindrical tracking detector. More...

#include <PlanarTracker.h>

Inheritance diagram for Smear::PlanarTracker:

Public Member Functions
	PlanarTracker ()
	Default constructor. More...

	PlanarTracker (double innerRadius, double outerRadius, double zMin, double zMax, double magneticField, double nRadiationLengths, double sigmaRPhi, double nPlanes)
	Constructor for a tracker with arbitrary positioning along z. More...

virtual	~PlanarTracker ()
	Destructor. More...

virtual PlanarTracker *	Clone (const char *="") const
	Returns a new copy of this Tracker. More...

virtual void	Print (Option_t *="") const
	Print information about this device to standard output. More...

double	L (const erhic::VirtualParticle &) const
	Returns the path length of the particle through the tracker in metres. More...

double	LPrime (const erhic::VirtualParticle &) const
	Returns the transverse path length of the particle through the tracker in metres. More...

virtual int	NPoints (const erhic::VirtualParticle &) const
	Returns the number of measurement points for the particle. More...

virtual bool	Accepts (const erhic::VirtualParticle &) const
	Returns true if the particle falls within the angular acceptance defined via the input parameters. More...

virtual double	GetThetaMin () const
	Returns the minimum theta of particles accepted by the tracker (radians). More...

virtual double	GetThetaMax () const
	Returns the maximum theta of particles accepted by the tracker (radians). More...

Public Member Functions inherited from Smear::Tracker
	Tracker (double magneticField=2., double nRadiationLengths=0.01, double resolution=0.001)
	Constructor. More...

virtual	~Tracker ()
	Destructor. More...

virtual double	Resolution (const erhic::VirtualParticle &) const
	Returns the resolution at the kinematics of this particle. More...

void	Smear (const erhic::VirtualParticle &, ParticleMCS &)
	Smear the properties of the input particle and store the smeared values in the ParticleMCS. More...

void	SetVertexConstraint (bool constrain)
	Set whether a vertex constraint should be used when calculating the intrinsic resolution. More...

Public Member Functions inherited from Smear::Smearer
virtual	~Smearer ()
	Destructor. More...

Protected Member Functions
TVector3	ComputeIntersectionWithRadius (const erhic::VirtualParticle &, double radius) const
	Compute the intersection point of the particle with a radial surface. More...

TVector3	ComputeIntersectionWithPlane (const erhic::VirtualParticle &, double z) const

TVector3	ComputePath (const erhic::VirtualParticle &) const

Protected Member Functions inherited from Smear::Tracker
virtual double	MultipleScatteringContribution (const erhic::VirtualParticle &) const
	Multiple scattering contribution, given by delta(p)/p = 0.0136 * z * sqrt(NRL) / (0.3 * B * L * beta) z = charge, NRL = # radiation lengths, B = mag field, L = track length, beta = particle velocity. More...

virtual double	IntrinsicContribution (const erhic::VirtualParticle &) const
	The intrinsic resolution of the detector, depending on momentum, magnetic field, the detector dimensions, the number of fit points and the point resolution. More...

Protected Attributes
double	mNPlanes
	Number of planes. More...

double	mInnerRadius
	Inner radius (m) More...

double	mOuterRadius
	Outer radius (m) More...

double	mZMin
	Lower (most negative) z face. More...

double	mZMax
	Upper (most positive) z face. More...

Protected Attributes inherited from Smear::Tracker
Int_t	mFactor
	Factor in intrinsic resolution calculation dependent on vertex constraint. More...

double	mMagField
	Magnetic field strength in Tesla. More...

double	mNRadLengths
	Number of radiation lengths (dimensionless) More...

double	mSigmaRPhi
	Point resolution. More...

Distributor	Distribution
	Random distribution. More...

Additional Inherited Members
Public Attributes inherited from Smear::Smearer
Acceptance	Accept

Detailed Description

A cylindrical tracking detector.

Implements both intrinsic and multiple-scattering resolution.

Definition at line 32 of file PlanarTracker.h.

Constructor & Destructor Documentation

◆ PlanarTracker() [1/2]

Smear::PlanarTracker::PlanarTracker ( )

Default constructor.

B = 2, NRL = 0.03, sigma(r-phi) = 0.001, N = 25, inner radius = 0.25 m, outer radius = 1 m, length = 6 m.

Definition at line 21 of file PlanarTracker.cxx.

◆ PlanarTracker() [2/2]

Smear::PlanarTracker::PlanarTracker	(	double	innerRadius,
		double	outerRadius,
		double	zMin,
		double	zMax,
		double	magneticField,
		double	nRadiationLengths,
		double	sigmaRPhi,
		double	nPlanes
	)

Constructor for a tracker with arbitrary positioning along z.

Definition at line 30 of file PlanarTracker.cxx.

◆ ~PlanarTracker()

Smear::PlanarTracker::~PlanarTracker ( )

virtual

Destructor.

Definition at line 43 of file PlanarTracker.cxx.

Member Function Documentation

◆ Accepts()

bool Smear::PlanarTracker::Accepts ( const erhic::VirtualParticle & p ) const

virtual

Returns true if the particle falls within the angular acceptance defined via the input parameters.

This is defined as the particle's transverse path length being greater than half of (outer radius - inner radius) / number of fit points i.e. the particle has to pass through enough of the detector to cause at least one measureable point.

Implements Smear::Tracker.

Definition at line 160 of file PlanarTracker.cxx.

◆ Clone()

PlanarTracker * Smear::PlanarTracker::Clone ( const char * = "" ) const

inlinevirtual

Returns a new copy of this Tracker.

The argument is not used.

Implements Smear::Smearer.

Definition at line 124 of file PlanarTracker.h.

◆ ComputeIntersectionWithPlane()

TVector3 Smear::PlanarTracker::ComputeIntersectionWithPlane	(	const erhic::VirtualParticle &	p,
		double	z
	)		const

protected

Definition at line 87 of file PlanarTracker.cxx.

◆ ComputeIntersectionWithRadius()

TVector3 Smear::PlanarTracker::ComputeIntersectionWithRadius	(	const erhic::VirtualParticle &	p,
		double	radius
	)		const

protected

Compute the intersection point of the particle with a radial surface.

Returns the 3-vector of the intersection point if the z of the intersection is within (zmin, zmax) of this detector, or (0, 0, NaN) if not.

Definition at line 74 of file PlanarTracker.cxx.

◆ ComputePath()

TVector3 Smear::PlanarTracker::ComputePath ( const erhic::VirtualParticle & ) const

protected

◆ GetThetaMax()

double Smear::PlanarTracker::GetThetaMax ( ) const

virtual

Returns the maximum theta of particles accepted by the tracker (radians).

Implements Smear::Tracker.

Definition at line 66 of file PlanarTracker.cxx.

◆ GetThetaMin()

double Smear::PlanarTracker::GetThetaMin ( ) const

virtual

Returns the minimum theta of particles accepted by the tracker (radians).

Implements Smear::Tracker.

Definition at line 58 of file PlanarTracker.cxx.

◆ L()

double Smear::PlanarTracker::L ( const erhic::VirtualParticle & p ) const

virtual

Returns the path length of the particle through the tracker in metres.

Implements Smear::Tracker.

Definition at line 100 of file PlanarTracker.cxx.

◆ LPrime()

double Smear::PlanarTracker::LPrime ( const erhic::VirtualParticle & p ) const

virtual

Returns the transverse path length of the particle through the tracker in metres.

Implements Smear::Tracker.

Definition at line 124 of file PlanarTracker.cxx.

◆ NPoints()

int Smear::PlanarTracker::NPoints ( const erhic::VirtualParticle & p ) const

virtual

Returns the number of measurement points for the particle.

This is the number of planes hit in the planar tracker for the particle.

Implements Smear::Tracker.

Definition at line 143 of file PlanarTracker.cxx.

◆ Print()

void Smear::PlanarTracker::Print ( Option_t * = "" ) const

virtual

Print information about this device to standard output.

Definition at line 46 of file PlanarTracker.cxx.

Member Data Documentation

◆ mInnerRadius

double Smear::PlanarTracker::mInnerRadius

protected

Inner radius (m)

Definition at line 116 of file PlanarTracker.h.

◆ mNPlanes

double Smear::PlanarTracker::mNPlanes

protected

Number of planes.

Definition at line 115 of file PlanarTracker.h.

◆ mOuterRadius

double Smear::PlanarTracker::mOuterRadius

protected

Outer radius (m)

Definition at line 117 of file PlanarTracker.h.

◆ mZMax

double Smear::PlanarTracker::mZMax

protected

Upper (most positive) z face.

Definition at line 119 of file PlanarTracker.h.

◆ mZMin

double Smear::PlanarTracker::mZMin

protected

Lower (most negative) z face.

Definition at line 118 of file PlanarTracker.h.

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

Public Member Functions

Protected Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ PlanarTracker() [1/2]

◆ PlanarTracker() [2/2]

◆ ~PlanarTracker()

Member Function Documentation

◆ Accepts()

◆ Clone()

◆ ComputeIntersectionWithPlane()

◆ ComputeIntersectionWithRadius()

◆ ComputePath()

◆ GetThetaMax()

◆ GetThetaMin()

◆ L()

◆ LPrime()

◆ NPoints()

◆ Print()

Member Data Documentation

◆ mInnerRadius

◆ mNPlanes

◆ mOuterRadius

◆ mZMax

◆ mZMin