#include <GenFit/blob/master/trackReps/include/MplTrackRep.h>

Inheritance diagram for genfit::MplTrackRep:

Collaboration diagram for genfit::MplTrackRep:

Public Member Functions
	MplTrackRep ()

	MplTrackRep (int pdgCode, float magCharge, char propDir=0)

	~MplTrackRep ()

double	RKPropagate (M1x7 &state7, M7x7 *jacobian, M1x3 &SA, double S, bool varField=true, bool calcOnlyLastRowOfJ=false) const override
	The actual Runge Kutta propagation.

double	getCharge (const StateOnPlane &state) const override
	Get the (fitted) charge of a state. This is not always equal the pdg charge (e.g. if the charge sign was flipped during the fit).

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

	RKTrackRep (int pdgCode, char propDir=0)

virtual	~RKTrackRep ()

virtual AbsTrackRep *	clone () const override
	Clone the trackRep.

virtual double	extrapolateToPlane (StateOnPlane &state, const SharedPlanePtr &plane, bool stopAtBoundary=false, bool calcJacobianNoise=false) const override
	Extrapolates the state to plane, and returns the extrapolation length and, via reference, the extrapolated state.

virtual double	extrapolateToLine (StateOnPlane &state, const TVector3 &linePoint, const TVector3 &lineDirection, bool stopAtBoundary=false, bool calcJacobianNoise=false) const override
	Extrapolates the state to the POCA to a line, and returns the extrapolation length and, via reference, the extrapolated state.

virtual double	extrapolateToPoint (StateOnPlane &state, const TVector3 &point, bool stopAtBoundary=false, bool calcJacobianNoise=false) const override
	Extrapolates the state to the POCA to a point, and returns the extrapolation length and, via reference, the extrapolated state.

virtual double	extrapolateToPoint (StateOnPlane &state, const TVector3 &point, const TMatrixDSym &G, bool stopAtBoundary=false, bool calcJacobianNoise=false) const override
	Extrapolates the state to the POCA to a point in the metric of G, and returns the extrapolation length and, via reference, the extrapolated state.

virtual double	extrapolateToCylinder (StateOnPlane &state, double radius, const TVector3 &linePoint=TVector3(0., 0., 0.), const TVector3 &lineDirection=TVector3(0., 0., 1.), bool stopAtBoundary=false, bool calcJacobianNoise=false) const override
	Extrapolates the state to the cylinder surface, and returns the extrapolation length and, via reference, the extrapolated state.

virtual double	extrapolateToCone (StateOnPlane &state, double radius, const TVector3 &linePoint=TVector3(0., 0., 0.), const TVector3 &lineDirection=TVector3(0., 0., 1.), bool stopAtBoundary=false, bool calcJacobianNoise=false) const override
	Extrapolates the state to the cone surface, and returns the extrapolation length and, via reference, the extrapolated state.

virtual double	extrapolateToSphere (StateOnPlane &state, double radius, const TVector3 &point=TVector3(0., 0., 0.), bool stopAtBoundary=false, bool calcJacobianNoise=false) const override
	Extrapolates the state to the sphere surface, and returns the extrapolation length and, via reference, the extrapolated state.

virtual double	extrapolateBy (StateOnPlane &state, double step, bool stopAtBoundary=false, bool calcJacobianNoise=false) const override
	Extrapolates the state by step (cm) and returns the extrapolation length and, via reference, the extrapolated state.

unsigned int	getDim () const override
	Get the dimension of the state vector used by the track representation.

virtual TVector3	getPos (const StateOnPlane &state) const override
	Get the cartesian position of a state.

virtual TVector3	getMom (const StateOnPlane &state) const override
	Get the cartesian momentum vector of a state.

virtual void	getPosMom (const StateOnPlane &state, TVector3 &pos, TVector3 &mom) const override
	Get cartesian position and momentum vector of a state.

virtual double	getMomMag (const StateOnPlane &state) const override
	get the magnitude of the momentum in GeV.

virtual double	getMomVar (const MeasuredStateOnPlane &state) const override
	get the variance of the absolute value of the momentum .

virtual TMatrixDSym	get6DCov (const MeasuredStateOnPlane &state) const override
	Get the 6D covariance.

virtual void	getPosMomCov (const MeasuredStateOnPlane &state, TVector3 &pos, TVector3 &mom, TMatrixDSym &cov) const override
	Translates MeasuredStateOnPlane into 3D position, momentum and 6x6 covariance.

virtual double	getQop (const StateOnPlane &state) const override
	Get charge over momentum.

double	getSpu (const StateOnPlane &state) const

double	getTime (const StateOnPlane &state) const override
	Get the time corresponding to the StateOnPlane. Extrapolation.

virtual void	getForwardJacobianAndNoise (TMatrixD &jacobian, TMatrixDSym &noise, TVectorD &deltaState) const override
	Get the jacobian and noise matrix of the last extrapolation.

virtual void	getBackwardJacobianAndNoise (TMatrixD &jacobian, TMatrixDSym &noise, TVectorD &deltaState) const override
	Get the jacobian and noise matrix of the last extrapolation if it would have been done in opposite direction.

std::vector< genfit::MatStep >	getSteps () const override
	Get stepsizes and material properties of crossed materials of the last extrapolation.

virtual double	getRadiationLenght () const override
	Get the accumulated X/X0 (path / radiation length) of the material crossed in the last extrapolation.

virtual void	setPosMom (StateOnPlane &state, const TVector3 &pos, const TVector3 &mom) const override
	Set position and momentum of state.

virtual void	setPosMom (StateOnPlane &state, const TVectorD &state6) const override
	Set position and momentum of state.

virtual void	setPosMomErr (MeasuredStateOnPlane &state, const TVector3 &pos, const TVector3 &mom, const TVector3 &posErr, const TVector3 &momErr) const override
	Set position and momentum and error of state.

virtual void	setPosMomCov (MeasuredStateOnPlane &state, const TVector3 &pos, const TVector3 &mom, const TMatrixDSym &cov6x6) const override
	Set position, momentum and covariance of state.

virtual void	setPosMomCov (MeasuredStateOnPlane &state, const TVectorD &state6, const TMatrixDSym &cov6x6) const override
	Set position, momentum and covariance of state.

virtual void	setChargeSign (StateOnPlane &state, double charge) const override
	Set the sign of the charge according to charge.

virtual void	setQop (StateOnPlane &state, double qop) const override
	Set charge/momentum.

void	setSpu (StateOnPlane &state, double spu) const

void	setTime (StateOnPlane &state, double time) const override
	Set time at which the state was defined.

virtual bool	isSameType (const AbsTrackRep *other) override
	check if other is of same type (e.g. RKTrackRep).

virtual bool	isSame (const AbsTrackRep *other) override
	check if other is of same type (e.g. RKTrackRep) and has same pdg code.

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

	AbsTrackRep (int pdgCode, char propDir=0)

virtual	~AbsTrackRep ()

virtual double	extrapolateToLine (StateOnPlane &state, const TVector3 &point1, const TVector3 &point2, TVector3 &poca, TVector3 &dirInPoca, TVector3 &poca_onwire, bool stopAtBoundary=false, bool calcJacobianNoise=false) const
	Resembles the interface of GFAbsTrackRep in old versions of genfit.

double	extrapolateToMeasurement (StateOnPlane &state, const AbsMeasurement *measurement, bool stopAtBoundary=false, bool calcJacobianNoise=false) const
	extrapolate to an AbsMeasurement

TVector3	getDir (const StateOnPlane &state) const
	Get the direction vector of a state.

void	getPosDir (const StateOnPlane &state, TVector3 &pos, TVector3 &dir) const
	Get cartesian position and direction vector of a state.

virtual TVectorD	get6DState (const StateOnPlane &state) const
	Get the 6D state vector (x, y, z, p_x, p_y, p_z).

virtual void	get6DStateCov (const MeasuredStateOnPlane &state, TVectorD &stateVec, TMatrixDSym &cov) const
	Translates MeasuredStateOnPlane into 6D state vector (x, y, z, p_x, p_y, p_z) and 6x6 covariance.

int	getPDG () const
	Get the pdg code.

double	getPDGCharge () const
	Get the charge of the particle of the pdg code.

double	getMass (const StateOnPlane &state) const
	Get tha particle mass in GeV/c^2.

char	getPropDir () const
	Get propagation direction. (-1, 0, 1) -> (backward, auto, forward).

void	calcJacobianNumerically (const genfit::StateOnPlane &origState, const genfit::SharedPlanePtr destPlane, TMatrixD &jacobian) const
	Calculate Jacobian of transportation numerically. Slow but accurate. Can be used to validate (semi)analytic calculations.

bool	switchPDGSign ()
	try to multiply pdg code with -1. (Switch from particle to anti-particle and vice versa).

void	setPropDir (int dir)
	Set propagation direction. (-1, 0, 1) -> (backward, auto, forward).

void	switchPropDir ()
	Switch propagation direction. Has no effect if propDir_ is set to 0.

virtual void	setDebugLvl (unsigned int lvl=1)

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

Private Attributes
const double	m_magCharge

const double	m_mass

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

AbsTrackRep &	operator= (const AbsTrackRep &)
	protect from calling assignment operator from outside the class. Use clone() instead!

Protected Attributes inherited from genfit::RKTrackRep
StateOnPlane	lastStartState_

StateOnPlane	lastEndState_
	state where the last extrapolation has started

Detailed Description

Monopole track representation. It is a minimal modification of RKTrackRep with a different equations of motion for magnetic charges.

In the current implementation the states on plane are 5-d: u, v, u', v', q/p except that q in this case is magnetic, and the monopole has no electic charge.

Definition at line 33 of file MplTrackRep.h.

View newest version in sPHENIX GitHub at line 33 of file MplTrackRep.h

Constructor & Destructor Documentation

genfit::MplTrackRep::MplTrackRep ( )

inline

Definition at line 37 of file MplTrackRep.h.

View newest version in sPHENIX GitHub at line 37 of file MplTrackRep.h

MplTrackRep::MplTrackRep	(	int	pdgCode,
		float	magCharge,
		char	propDir = `0`
	)

Definition at line 33 of file MplTrackRep.cc.

View newest version in sPHENIX GitHub at line 33 of file MplTrackRep.cc

MplTrackRep::~MplTrackRep ( )

Definition at line 40 of file MplTrackRep.cc.

View newest version in sPHENIX GitHub at line 40 of file MplTrackRep.cc

Member Function Documentation

double MplTrackRep::getCharge ( const StateOnPlane & state ) const

overridevirtual

Get the (fitted) charge of a state. This is not always equal the pdg charge (e.g. if the charge sign was flipped during the fit).

Reimplemented from genfit::RKTrackRep.

Definition at line 44 of file MplTrackRep.cc.

View newest version in sPHENIX GitHub at line 44 of file MplTrackRep.cc

References genfit::AbsTrackRep::getPDGCharge(), genfit::StateOnPlane::getState(), m_magCharge, and genfit::Exception::setFatal().

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double MplTrackRep::RKPropagate	(	M1x7 &	state7,
		M7x7 *	jacobian,
		M1x3 &	SA,
		double	S,
		bool	varField = `true`,
		bool	calcOnlyLastRowOfJ = `false`
	)		const

overridevirtual

The actual Runge Kutta propagation.

propagate state7 with step S. Fills SA (Start directions derivatives dA/S). This is a single Runge-Kutta step. If jacobian is nullptr, only the state is propagated, otherwise also the 7x7 jacobian is calculated. If varField is false, the magnetic field will only be evaluated at the starting position. The return value is an estimation on how good the extrapolation is, and it is usually fine if it is > 1. It gives a suggestion how you must scale S so that the quality will be sufficient.

Reimplemented from genfit::RKTrackRep.

Definition at line 61 of file MplTrackRep.cc.

View newest version in sPHENIX GitHub at line 61 of file MplTrackRep.cc

References A, D1, D2, D4, genfit::AbsTrackRep::debugLvl_, genfit::debugOut, Acts::UnitConstants::e, F1, F2, F3, genfit::FieldManager::getFieldVal(), genfit::FieldManager::getInstance(), i, Acts::UnitConstants::J, m_magCharge, m_mass, Acts::IntegrationTest::R, physmon_track_finding_ttbar::r, S(), sign(), and start.

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Member Data Documentation

const double genfit::MplTrackRep::m_magCharge

private

Definition at line 54 of file MplTrackRep.h.

View newest version in sPHENIX GitHub at line 54 of file MplTrackRep.h

Referenced by getCharge(), and RKPropagate().

const double genfit::MplTrackRep::m_mass

private

Definition at line 55 of file MplTrackRep.h.

View newest version in sPHENIX GitHub at line 55 of file MplTrackRep.h

Referenced by RKPropagate().

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

GenFit/blob/master/trackReps/include/MplTrackRep.h
GenFit/blob/master/trackReps/src/MplTrackRep.cc

Public Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation