Vertexing using truth info. More...

#include <coresoftware/blob/master/offline/packages/trackreco/PHTruthTrackSeeding.h>

Inheritance diagram for PHTruthTrackSeeding:

Collaboration diagram for PHTruthTrackSeeding:

Public Member Functions
	PHTruthTrackSeeding (const std::string &name="PHTruthTrackSeeding")

unsigned int	get_min_clusters_per_track () const

void	set_min_clusters_per_track (unsigned int minClustersPerTrack)

void	set_min_layer (unsigned int minLayer)

void	set_max_layer (unsigned int maxLayer)

double	get_min_momentum () const
	minimal truth momentum cut

void	set_min_momentum (double m)
	minimal truth momentum cut

void	helicalTrackFit (const bool helicalTrackFit)

Public Member Functions inherited from PHTrackSeeding
	PHTrackSeeding (const std::string &name="PHTrackSeeding")

	~PHTrackSeeding () override

int	InitRun (PHCompositeNode *topNode) override

int	process_event (PHCompositeNode *topNode) override

int	End (PHCompositeNode *topNode) override
	Called at the end of all processing.

void	set_track_map_name (const std::string &map_name)

void	SetUseTruthClusters (bool setit)

void	SetIteration (int iter)

Public Member Functions inherited from SubsysReco
	~SubsysReco () override

virtual int	EndRun (const int)
	Called at the end of each run.

virtual int	Init (PHCompositeNode *)

virtual int	Reset (PHCompositeNode *)
	Reset.

virtual int	ResetEvent (PHCompositeNode *)
	Clean up after each event.

void	Print (const std::string &="ALL") const override

Public Member Functions inherited from Fun4AllBase
virtual	~Fun4AllBase ()

virtual const std::string	Name () const
	Returns the name of this module.

virtual void	Name (const std::string &name)
	Sets the name of this module.

virtual void	Verbosity (const int ival)
	Sets the verbosity of this module (0 by default=quiet).

virtual void	Verbosity (enu_Verbosity ival)
	Sets the verbosity of this module (0 by default=quiet).

virtual int	Verbosity () const
	Gets the verbosity of this module.

Protected Member Functions
int	Setup (PHCompositeNode *topNode) override

int	Process (PHCompositeNode *topNode) override

int	End () override
	Called in SubsysReco::End.

Private Member Functions
int	GetNodes (PHCompositeNode *topNode)
	fetch node pointers

void	circleFitSeed (std::vector< TrkrDefs::cluskey > clusters, double &x, double &y, double &z, double &px, double &py, double &pz, int charge)

void	circleFitByTaubin (std::vector< TrkrDefs::cluskey > &clusters, double &R, double &X0, double &Y0)

void	findRoot (const double &R, const double &X0, const double &Y0, double &x, double &y)

void	lineFit (std::vector< TrkrDefs::cluskey > &clusters, double &A, double &B)

Private Attributes
PHG4TruthInfoContainer *	_g4truth_container = nullptr

TrkrClusterContainer *	m_clusterMap = nullptr

PHG4HitContainer *	phg4hits_tpc = nullptr

PHG4HitContainer *	phg4hits_intt = nullptr

PHG4HitContainer *	phg4hits_mvtx = nullptr

PHG4HitContainer *	phg4hits_micromegas = nullptr

TrkrHitTruthAssoc *	hittruthassoc = nullptr

SvtxClusterEval *	_clustereval

unsigned int	_min_clusters_per_track = 3

unsigned int	_min_layer = 0

unsigned int	_max_layer = 60

bool	m_helicalTrackFit = false

double	_min_momentum = 50e-3
	minimal truth momentum cut (GeV)

Additional Inherited Members
Public Types inherited from Fun4AllBase
enum	enu_Verbosity { VERBOSITY_QUIET = 0, VERBOSITY_SOME = 1, VERBOSITY_MORE = 2, VERBOSITY_EVEN_MORE = 3, VERBOSITY_A_LOT = 4, VERBOSITY_MAX = INT_MAX - 10 }

Protected Attributes inherited from PHTrackSeeding
TrkrClusterContainer *	_cluster_map = nullptr

TrkrClusterHitAssoc *	_cluster_hit_map = nullptr

TrkrClusterIterationMapv1 *	_iteration_map

int	_n_iteration

SvtxVertexMap *	_vertex_map = nullptr

SvtxTrackMap *	_track_map = nullptr

AssocInfoContainer *	_assoc_container = nullptr

TrkrHitSetContainer *	_hitsets = nullptr

std::string	_track_map_name = "SvtxTrackMap"

bool	_use_truth_clusters = false

Detailed Description

Vertexing using truth info.

Definition at line 31 of file PHTruthTrackSeeding.h.

View newest version in sPHENIX GitHub at line 31 of file PHTruthTrackSeeding.h

Constructor & Destructor Documentation

PHTruthTrackSeeding::PHTruthTrackSeeding ( const std::string & name = "PHTruthTrackSeeding" )

Definition at line 52 of file PHTruthTrackSeeding.cc.

View newest version in sPHENIX GitHub at line 52 of file PHTruthTrackSeeding.cc

Member Function Documentation

void PHTruthTrackSeeding::circleFitByTaubin	(	std::vector< TrkrDefs::cluskey > &	clusters,
		double &	R,
		double &	X0,
		double &	Y0
	)

private

Circle fit to a given set of data points (in 2D) This is an algebraic fit, due to Taubin, based on the journal article G. Taubin, "Estimation Of Planar Curves, Surfaces And Nonplanar Space Curves Defined By Implicit Equations, With Applications To Edge And Range Image Segmentation", IEEE Trans. PAMI, Vol. 13, pages 1115-1138, (1991) It works well whether data points are sampled along an entire circle or along a small arc. It still has a small bias and its statistical accuracy is slightly lower than that of the geometric fit (minimizing geometric distances), It provides a very good initial guess for a subsequent geometric fit. Nikolai Chernov (September 2012)

Definition at line 363 of file PHTruthTrackSeeding.cc.

View newest version in sPHENIX GitHub at line 363 of file PHTruthTrackSeeding.cc

References A22, A33, Dy, TrkrClusterContainer::findCluster(), TrkrCluster::getX(), isfinite, m_clusterMap, weight, x, and y.

Referenced by circleFitSeed().

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void PHTruthTrackSeeding::circleFitSeed	(	std::vector< TrkrDefs::cluskey >	clusters,
		double &	x,
		double &	y,
		double &	z,
		double &	px,
		double &	py,
		double &	pz,
		int	charge
	)

private

0.3 conversion factor, 1.4=B field, 100 convert R from cm to m Get a very rough estimate of p

The only thing that is really needed for the propagation is the direction

Definition at line 271 of file PHTruthTrackSeeding.cc.

View newest version in sPHENIX GitHub at line 271 of file PHTruthTrackSeeding.cc

References B(), circleFitByTaubin(), Acts::VectorHelpers::eta(), findRoot(), lineFit(), m, M_PI, phi, pt, Acts::IntegrationTest::R, and theta().

Referenced by Process().

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int PHTruthTrackSeeding::End ( )

overrideprotectedvirtual

Called in SubsysReco::End.

Implements PHTrackSeeding.

Definition at line 264 of file PHTruthTrackSeeding.cc.

View newest version in sPHENIX GitHub at line 264 of file PHTruthTrackSeeding.cc

void PHTruthTrackSeeding::findRoot	(	const double &	R,
		const double &	X0,
		const double &	Y0,
		double &	x,
		double &	y
	)

private

Figure out which of the two roots is actually closer to the origin

Definition at line 336 of file PHTruthTrackSeeding.cc.

View newest version in sPHENIX GitHub at line 336 of file PHTruthTrackSeeding.cc

Referenced by circleFitSeed().

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unsigned int PHTruthTrackSeeding::get_min_clusters_per_track ( ) const

inline

Definition at line 36 of file PHTruthTrackSeeding.h.

View newest version in sPHENIX GitHub at line 36 of file PHTruthTrackSeeding.h

References _min_clusters_per_track.

double PHTruthTrackSeeding::get_min_momentum ( ) const

inline

minimal truth momentum cut

Definition at line 57 of file PHTruthTrackSeeding.h.

View newest version in sPHENIX GitHub at line 57 of file PHTruthTrackSeeding.h

References _min_momentum.

int PHTruthTrackSeeding::GetNodes ( PHCompositeNode * topNode )

private

fetch node pointers

Definition at line 220 of file PHTruthTrackSeeding.cc.

View newest version in sPHENIX GitHub at line 220 of file PHTruthTrackSeeding.cc

References _g4truth_container, Fun4AllReturnCodes::ABORTEVENT, Fun4AllReturnCodes::EVENT_OK, g4zmq::exit(), hittruthassoc, m_clusterMap, phg4hits_intt, phg4hits_micromegas, phg4hits_mvtx, phg4hits_tpc, and PHWHERE.

Referenced by Setup().

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void PHTruthTrackSeeding::helicalTrackFit ( const bool helicalTrackFit )

inline

Definition at line 67 of file PHTruthTrackSeeding.h.

View newest version in sPHENIX GitHub at line 67 of file PHTruthTrackSeeding.h

References helicalTrackFit(), and m_helicalTrackFit.

Referenced by helicalTrackFit().

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void PHTruthTrackSeeding::lineFit	(	std::vector< TrkrDefs::cluskey > &	clusters,
		double &	A,
		double &	B
	)

private

calculate slope

calculate intercept

Definition at line 312 of file PHTruthTrackSeeding.cc.

View newest version in sPHENIX GitHub at line 312 of file PHTruthTrackSeeding.cc

References TrkrClusterContainer::findCluster(), m_clusterMap, r, and z.

Referenced by circleFitSeed().

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int PHTruthTrackSeeding::Process ( PHCompositeNode * topNode )

overrideprotectedvirtual

process event interface for trackers, called in process_event. implemented in derived classes

g4 vertex id starts at 1, svtx vertex map starts at 0

Implements PHTrackSeeding.

Definition at line 73 of file PHTruthTrackSeeding.cc.

View newest version in sPHENIX GitHub at line 73 of file PHTruthTrackSeeding.cc

References PHTrackSeeding::_assoc_container, PHTrackSeeding::_cluster_map, _clustereval, _g4truth_container, _max_layer, _min_clusters_per_track, _min_layer, _min_momentum, PHTrackSeeding::_track_map, PHTrackSeeding::_track_map_name, SvtxTrackMap::begin(), SvtxTrack::begin_cluster_keys(), SvtxClusterEval::best_cluster_by_nhit(), circleFitSeed(), SvtxTrackMap::end(), SvtxTrack::end_cluster_keys(), Fun4AllReturnCodes::EVENT_OK, g4zmq::exit(), TrkrClusterContainer::findCluster(), SvtxTrack::get_id(), PHG4Particle::get_pid(), SvtxTrack::get_pt(), PHG4Particle::get_px(), PHG4Particle::get_py(), PHG4Particle::get_pz(), PHG4Particle::get_track_id(), SvtxTrack::get_truth_track_id(), PHG4Particle::get_vtx_id(), SvtxTrack::get_x(), SvtxTrack::get_y(), SvtxTrack::get_z(), TrkrCluster::getClusKey(), PHG4TruthInfoContainer::GetPrimaryParticleRange(), PHG4TruthInfoContainer::GetVtx(), TrkrCluster::getX(), TrkrCluster::getY(), PHG4Particle::identify(), SvtxTrackMap::insert(), G4TTL::layer, m_helicalTrackFit, SvtxClusterEval::next_event(), particle, radius, PHG4VtxPoint::set_x(), AssocInfoContainer::SetClusterTrackAssoc(), SvtxTrackMap::size(), SvtxTrack::size_cluster_keys(), Fun4AllBase::Verbosity(), x, y, and z.

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void PHTruthTrackSeeding::set_max_layer ( unsigned int maxLayer )

inline

Definition at line 51 of file PHTruthTrackSeeding.h.

View newest version in sPHENIX GitHub at line 51 of file PHTruthTrackSeeding.h

References _max_layer.

void PHTruthTrackSeeding::set_min_clusters_per_track ( unsigned int minClustersPerTrack )

inline

Definition at line 41 of file PHTruthTrackSeeding.h.

View newest version in sPHENIX GitHub at line 41 of file PHTruthTrackSeeding.h

References _min_clusters_per_track.

void PHTruthTrackSeeding::set_min_layer ( unsigned int minLayer )

inline

Definition at line 46 of file PHTruthTrackSeeding.h.

View newest version in sPHENIX GitHub at line 46 of file PHTruthTrackSeeding.h

References _min_layer.

void PHTruthTrackSeeding::set_min_momentum ( double m )

inline

minimal truth momentum cut

Definition at line 63 of file PHTruthTrackSeeding.h.

View newest version in sPHENIX GitHub at line 63 of file PHTruthTrackSeeding.h

References _min_momentum, and m.

int PHTruthTrackSeeding::Setup ( PHCompositeNode * topNode )

overrideprotectedvirtual

setup interface for trackers, called in InitRun, setup things like pointers to nodes. overrided in derived classes

Reimplemented from PHTrackSeeding.

Definition at line 57 of file PHTruthTrackSeeding.cc.

View newest version in sPHENIX GitHub at line 57 of file PHTruthTrackSeeding.cc

References _clustereval, SvtxClusterEval::do_caching(), Fun4AllReturnCodes::EVENT_OK, GetNodes(), and PHTrackSeeding::Setup().

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Member Data Documentation

SvtxClusterEval* PHTruthTrackSeeding::_clustereval

private

Definition at line 97 of file PHTruthTrackSeeding.h.

View newest version in sPHENIX GitHub at line 97 of file PHTruthTrackSeeding.h

Referenced by Process(), and Setup().

PHG4TruthInfoContainer* PHTruthTrackSeeding::_g4truth_container = nullptr

private

Definition at line 89 of file PHTruthTrackSeeding.h.

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

Referenced by GetNodes(), and Process().

unsigned int PHTruthTrackSeeding::_max_layer = 60

private

Definition at line 101 of file PHTruthTrackSeeding.h.

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

Referenced by Process(), and set_max_layer().

unsigned int PHTruthTrackSeeding::_min_clusters_per_track = 3

private

Definition at line 99 of file PHTruthTrackSeeding.h.

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

Referenced by get_min_clusters_per_track(), Process(), and set_min_clusters_per_track().

unsigned int PHTruthTrackSeeding::_min_layer = 0

private

Definition at line 100 of file PHTruthTrackSeeding.h.

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

Referenced by Process(), and set_min_layer().

double PHTruthTrackSeeding::_min_momentum = 50e-3

private

minimal truth momentum cut (GeV)

Definition at line 108 of file PHTruthTrackSeeding.h.

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

Referenced by get_min_momentum(), Process(), and set_min_momentum().

TrkrHitTruthAssoc* PHTruthTrackSeeding::hittruthassoc = nullptr

private

Definition at line 96 of file PHTruthTrackSeeding.h.

View newest version in sPHENIX GitHub at line 96 of file PHTruthTrackSeeding.h

Referenced by GetNodes().

TrkrClusterContainer* PHTruthTrackSeeding::m_clusterMap = nullptr

private

Definition at line 90 of file PHTruthTrackSeeding.h.

View newest version in sPHENIX GitHub at line 90 of file PHTruthTrackSeeding.h

Referenced by circleFitByTaubin(), GetNodes(), and lineFit().

bool PHTruthTrackSeeding::m_helicalTrackFit = false

private

Option to perform a helical track fit to get track parameters for truth seeded track

Definition at line 105 of file PHTruthTrackSeeding.h.

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

Referenced by helicalTrackFit(), and Process().

PHG4HitContainer* PHTruthTrackSeeding::phg4hits_intt = nullptr

private

Definition at line 92 of file PHTruthTrackSeeding.h.

View newest version in sPHENIX GitHub at line 92 of file PHTruthTrackSeeding.h

Referenced by GetNodes().

PHG4HitContainer* PHTruthTrackSeeding::phg4hits_micromegas = nullptr

private

Definition at line 94 of file PHTruthTrackSeeding.h.

View newest version in sPHENIX GitHub at line 94 of file PHTruthTrackSeeding.h

Referenced by GetNodes().

PHG4HitContainer* PHTruthTrackSeeding::phg4hits_mvtx = nullptr

private

Definition at line 93 of file PHTruthTrackSeeding.h.

View newest version in sPHENIX GitHub at line 93 of file PHTruthTrackSeeding.h

Referenced by GetNodes().

PHG4HitContainer* PHTruthTrackSeeding::phg4hits_tpc = nullptr

private

Definition at line 91 of file PHTruthTrackSeeding.h.

View newest version in sPHENIX GitHub at line 91 of file PHTruthTrackSeeding.h

Referenced by GetNodes().

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

coresoftware/blob/master/offline/packages/trackreco/PHTruthTrackSeeding.h
coresoftware/blob/master/offline/packages/trackreco/PHTruthTrackSeeding.cc

Public Member Functions

Protected Member Functions

Private Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation