Class for measurements in wire detectors (Straw tubes and drift chambers) which do not measure the coordinate along the wire. More...

#include <fun4all_GenFit/blob/master/measurements/include/WireMeasurementNew.h>

Inheritance diagram for genfit::WireMeasurementNew:

Collaboration diagram for genfit::WireMeasurementNew:

Public Member Functions
	WireMeasurementNew ()

	WireMeasurementNew (double driftDistance, double driftDistanceError, const TVector3 &endPoint1, const TVector3 &endPoint2, int detId, int hitId, TrackPoint *trackPoint)

virtual	~WireMeasurementNew ()

virtual WireMeasurementNew *	clone () const override
	Deep copy ctor for polymorphic class.

virtual SharedPlanePtr	constructPlane (const StateOnPlane &state) const override

virtual std::vector < MeasurementOnPlane * >	constructMeasurementsOnPlane (const StateOnPlane &state) const override

virtual const AbsHMatrix *	constructHMatrix (const AbsTrackRep *) const override

void	setWireEndPoints (const TVector3 &endPoint1, const TVector3 &endPoint2)

void	setMaxDistance (double d)

void	setLeftRightResolution (int lr)

virtual bool	isLeftRigthMeasurement () const

double	getMaxDistance ()

int	getLeftRightResolution () const override

Public Member Functions inherited from genfit::AbsMeasurement
	AbsMeasurement ()

	AbsMeasurement (int nDims)

	AbsMeasurement (const TVectorD &rawHitCoords, const TMatrixDSym &rawHitCov, int detId, int hitId, TrackPoint *trackPoint)

virtual	~AbsMeasurement ()

TrackPoint *	getTrackPoint () const

void	setTrackPoint (TrackPoint *tp)

const TVectorD &	getRawHitCoords () const

const TMatrixDSym &	getRawHitCov () const

TVectorD &	getRawHitCoords ()

TMatrixDSym &	getRawHitCov ()

int	getDetId () const

int	getHitId () const

virtual bool	isLeftRightMeasurement () const
	If the AbsMeasurement is a wire hit, the left/right resolution will be used.

unsigned int	getDim () const

void	setRawHitCoords (const TVectorD &coords)

void	setRawHitCov (const TMatrixDSym &cov)

void	setDetId (int detId)

void	setHitId (int hitId)

virtual void	Print (const Option_t *="") const

Protected Attributes
double	wireEndPoint1_ [3]

double	wireEndPoint2_ [3]
	Wire end point 1 (X, Y, Z)

double	maxDistance_
	Wire end point 2 (X, Y, Z)

double	leftRight_

Protected Attributes inherited from genfit::AbsMeasurement
TVectorD	rawHitCoords_

TMatrixDSym	rawHitCov_

int	detId_

int	hitId_

TrackPoint *	trackPoint_
	Pointer to TrackPoint where the measurement belongs to.

Additional Inherited Members
Protected Member Functions inherited from genfit::AbsMeasurement
	AbsMeasurement (const AbsMeasurement &)
	protect from calling copy c'tor from outside the class. Use clone() if you want a copy!

Detailed Description

Class for measurements in wire detectors (Straw tubes and drift chambers) which do not measure the coordinate along the wire.

Author: Tobias Schlüter

This is similar to WireMeasurement, but since WireMeasurement stores a 7x7 covariance matrix for what is a one-dimensional measurement, this class is preferable. Protected inheritance of rawHitCoords_ and rawHitCov_ makes it impossible to rewrite WireMeasurement, as subclasses will access these members.

This hit class is not valid for arbitrary choices of plane orientation: to use it you MUST choose a plane described by u and v axes with v coincident with the wire (and u orthogonal to it, obviously). The hit will be described by 7 coordinates: w_x1, w_y1, w_z1, w_x2, w_y2, w_z2, rdrift where w_ji (with j = x, y, z and i = 1, 2) are the wire extremities coordinates; rdrift = distance from the wire (u coordinate in the plane)

Definition at line 56 of file WireMeasurementNew.h.

View newest version in sPHENIX GitHub at line 56 of file WireMeasurementNew.h

Constructor & Destructor Documentation

genfit::WireMeasurementNew::WireMeasurementNew ( )

Definition at line 39 of file WireMeasurementNew.cc.

View newest version in sPHENIX GitHub at line 39 of file WireMeasurementNew.cc

References wireEndPoint1_, and wireEndPoint2_.

Referenced by clone().

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genfit::WireMeasurementNew::WireMeasurementNew	(	double	driftDistance,
		double	driftDistanceError,
		const TVector3 &	endPoint1,
		const TVector3 &	endPoint2,
		int	detId,
		int	hitId,
		TrackPoint *	trackPoint
	)

Definition at line 46 of file WireMeasurementNew.cc.

View newest version in sPHENIX GitHub at line 46 of file WireMeasurementNew.cc

References Acts::Test::cov, genfit::AbsMeasurement::setDetId(), genfit::AbsMeasurement::setHitId(), genfit::AbsMeasurement::setRawHitCoords(), genfit::AbsMeasurement::setRawHitCov(), genfit::AbsMeasurement::setTrackPoint(), and setWireEndPoints().

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virtual genfit::WireMeasurementNew::~WireMeasurementNew ( )

inlinevirtual

Definition at line 62 of file WireMeasurementNew.h.

View newest version in sPHENIX GitHub at line 62 of file WireMeasurementNew.h

Member Function Documentation

virtual WireMeasurementNew* genfit::WireMeasurementNew::clone ( ) const

inlineoverridevirtual

Deep copy ctor for polymorphic class.

Implements genfit::AbsMeasurement.

Definition at line 64 of file WireMeasurementNew.h.

View newest version in sPHENIX GitHub at line 64 of file WireMeasurementNew.h

References WireMeasurementNew().

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const AbsHMatrix * genfit::WireMeasurementNew::constructHMatrix ( const AbsTrackRep * ) const

overridevirtual

Returns a new AbsHMatrix object. Caller must take ownership.

Implements genfit::AbsMeasurement.

Definition at line 132 of file WireMeasurementNew.cc.

View newest version in sPHENIX GitHub at line 132 of file WireMeasurementNew.cc

Referenced by constructMeasurementsOnPlane().

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std::vector< MeasurementOnPlane * > genfit::WireMeasurementNew::constructMeasurementsOnPlane ( const StateOnPlane & state ) const

overridevirtual

Hits with a small drift distance get a higher weight, whereas hits with big drift distances become weighted down. When these initial weights are used by the DAF, the smoothed track will be closer to the real trajectory than if both sides are weighted with 0.5 regardless of the drift distance. This helps a lot when resolving l/r ambiguities with the DAF. The idea is that for the first iteration of the DAF, the wire positions are taken. For small drift radii, the wire position does not bend the fit away from the trajectory, whereas the wire position for hits with large drift radii is further away from the trajectory and will therefore bias the fit if not weighted down.

Implements genfit::AbsMeasurement.

Definition at line 98 of file WireMeasurementNew.cc.

View newest version in sPHENIX GitHub at line 98 of file WireMeasurementNew.cc

References constructHMatrix(), genfit::StateOnPlane::getPlane(), genfit::AbsMeasurement::getRawHitCoords(), genfit::AbsMeasurement::getRawHitCov(), genfit::StateOnPlane::getRep(), leftRight_, max, maxDistance_, and genfit::MeasurementOnPlane::setWeight().

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SharedPlanePtr genfit::WireMeasurementNew::constructPlane ( const StateOnPlane & state ) const

overridevirtual

Construct (virtual) detector plane (use state's AbsTrackRep). It's possible to make corrections to the plane here. The state should be defined somewhere near the measurement. For virtual planes, the state will be extrapolated to the POCA to point (SpacepointMeasurement) or line (WireMeasurement), and from this info the plane will be constructed.

Implements genfit::AbsMeasurement.

Definition at line 64 of file WireMeasurementNew.cc.

View newest version in sPHENIX GitHub at line 64 of file WireMeasurementNew.cc

References genfit::AbsTrackRep::extrapolateToLine(), genfit::AbsTrackRep::getMom(), genfit::AbsTrackRep::getPos(), genfit::StateOnPlane::getRep(), wireEndPoint1_, and wireEndPoint2_.

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int genfit::WireMeasurementNew::getLeftRightResolution ( ) const

inlineoverridevirtual

Reimplemented from genfit::AbsMeasurement.

Definition at line 101 of file WireMeasurementNew.h.

View newest version in sPHENIX GitHub at line 101 of file WireMeasurementNew.h

References leftRight_.

double genfit::WireMeasurementNew::getMaxDistance ( )

inline

Definition at line 100 of file WireMeasurementNew.h.

View newest version in sPHENIX GitHub at line 100 of file WireMeasurementNew.h

References maxDistance_.

virtual bool genfit::WireMeasurementNew::isLeftRigthMeasurement ( ) const

inlinevirtual

Definition at line 99 of file WireMeasurementNew.h.

View newest version in sPHENIX GitHub at line 99 of file WireMeasurementNew.h

void genfit::WireMeasurementNew::setLeftRightResolution ( int lr )

select how to resolve the left/right ambiguity: -1: negative (left) side on vector (wire direction) x (track direction) 0: mirrors enter with same weight, DAF will decide. 1: positive (right) side on vector (wire direction) x (track direction) where the wire direction is pointing from endPoint1 to endPoint2

Definition at line 152 of file WireMeasurementNew.cc.

View newest version in sPHENIX GitHub at line 152 of file WireMeasurementNew.cc

References leftRight_.

void genfit::WireMeasurementNew::setMaxDistance ( double d )

inline

Set maximum drift distance. This is used to calculate the start weights of the two measurementsOnPlane.

Definition at line 89 of file WireMeasurementNew.h.

View newest version in sPHENIX GitHub at line 89 of file WireMeasurementNew.h

References d, and maxDistance_.

void genfit::WireMeasurementNew::setWireEndPoints	(	const TVector3 &	endPoint1,
		const TVector3 &	endPoint2
	)

Reset the wire end points.

Definition at line 141 of file WireMeasurementNew.cc.

View newest version in sPHENIX GitHub at line 141 of file WireMeasurementNew.cc

References wireEndPoint1_, and wireEndPoint2_.

Referenced by WireMeasurementNew().

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Member Data Documentation

double genfit::WireMeasurementNew::leftRight_

protected

Definition at line 108 of file WireMeasurementNew.h.

View newest version in sPHENIX GitHub at line 108 of file WireMeasurementNew.h

Referenced by constructMeasurementsOnPlane(), getLeftRightResolution(), and setLeftRightResolution().

double genfit::WireMeasurementNew::maxDistance_

protected

Wire end point 2 (X, Y, Z)

Definition at line 107 of file WireMeasurementNew.h.

View newest version in sPHENIX GitHub at line 107 of file WireMeasurementNew.h

Referenced by constructMeasurementsOnPlane(), getMaxDistance(), and setMaxDistance().

double genfit::WireMeasurementNew::wireEndPoint1_[3]

protected

Definition at line 105 of file WireMeasurementNew.h.

View newest version in sPHENIX GitHub at line 105 of file WireMeasurementNew.h

Referenced by constructPlane(), setWireEndPoints(), and WireMeasurementNew().

double genfit::WireMeasurementNew::wireEndPoint2_[3]

protected

Wire end point 1 (X, Y, Z)

Definition at line 106 of file WireMeasurementNew.h.

View newest version in sPHENIX GitHub at line 106 of file WireMeasurementNew.h

Referenced by constructPlane(), setWireEndPoints(), and WireMeasurementNew().

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

fun4all_GenFit/blob/master/measurements/include/WireMeasurementNew.h
fun4all_GenFit/blob/master/measurements/src/WireMeasurementNew.cc

Public Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation