Acts::IterativeVertexFinder::Config Struct Reference

Configuration struct. More...

#include <Acts/Vertexing/IterativeVertexFinder.hpp>

Collaboration diagram for Acts::IterativeVertexFinder::Config:

Public Member Functions
	Config (VertexFitter fitter, std::shared_ptr< IVertexFinder > sfinder, ImpactPointEstimator est)
	Config constructor.

Public Attributes
bool	createSplitVertices = false
	Assign a certain fraction of compatible tracks to a different (so-called split) vertex if boolean is set to true.
double	cutOffTrackWeight = 0.01
	Minimum track weight threshold for vertex association.
double	cutOffTrackWeightReassign = 1
	If reassignTracksAfterFirstFit is set this threshold will be used to decide if a track should be checked for reassignment to other vertices.
bool	doMaxTracksCut = false
	Flag to enable maximum tracks cut per vertex.
InputTrack::Extractor	extractParameters
	Function to extract parameters from InputTrack.
std::shared_ptr< const MagneticFieldProvider >	field
	Magnetic field provider.
ImpactPointEstimator	ipEst
	ImpactPointEstimator.
double	maximumChi2cutForSeeding = 36.
	Maximum chi-squared cut for seeding vertex candidates.
int	maxTracks = 5000
	Maximum number of tracks to consider per vertex.
int	maxVertices = 50
	Maximum number of vertices to find per event.
bool	reassignTracksAfterFirstFit = false
	Flag to enable track reassignment after first vertex fit.
std::shared_ptr< IVertexFinder >	seedFinder
	Vertex seed finder.
double	significanceCutSeeding = 10
	Vertex finder configuration variables.
int	splitVerticesTrkInvFraction = 2
	Inverse of the fraction of tracks that will be assigned to the split vertex.
TrackLinearizer	trackLinearizer
	Track linearizer.
VertexFitter	vertexFitter
	Vertex fitter.

Detailed Description

Configuration struct.

Constructor & Destructor Documentation

Config()

Acts::IterativeVertexFinder::Config::Config	(	VertexFitter	fitter,
		std::shared_ptr< IVertexFinder >	sfinder,
		ImpactPointEstimator	est )

Config constructor.

Parameters

fitter	Vertex fitter
sfinder	The seed finder
est	ImpactPointEstimator

Member Data Documentation

createSplitVertices

bool Acts::IterativeVertexFinder::Config::createSplitVertices = false

Assign a certain fraction of compatible tracks to a different (so-called split) vertex if boolean is set to true.

cutOffTrackWeight

double Acts::IterativeVertexFinder::Config::cutOffTrackWeight = 0.01

Minimum track weight threshold for vertex association.

cutOffTrackWeightReassign

double Acts::IterativeVertexFinder::Config::cutOffTrackWeightReassign = 1

If reassignTracksAfterFirstFit is set this threshold will be used to decide if a track should be checked for reassignment to other vertices.

doMaxTracksCut

bool Acts::IterativeVertexFinder::Config::doMaxTracksCut = false

Flag to enable maximum tracks cut per vertex.

extractParameters

InputTrack::Extractor Acts::IterativeVertexFinder::Config::extractParameters

Function to extract parameters from InputTrack.

field

std::shared_ptr<const MagneticFieldProvider> Acts::IterativeVertexFinder::Config::field

Magnetic field provider.

ipEst

ImpactPointEstimator Acts::IterativeVertexFinder::Config::ipEst

ImpactPointEstimator.

maximumChi2cutForSeeding

double Acts::IterativeVertexFinder::Config::maximumChi2cutForSeeding = 36.

Maximum chi-squared cut for seeding vertex candidates.

maxTracks

int Acts::IterativeVertexFinder::Config::maxTracks = 5000

Maximum number of tracks to consider per vertex.

maxVertices

int Acts::IterativeVertexFinder::Config::maxVertices = 50

Maximum number of vertices to find per event.

reassignTracksAfterFirstFit

bool Acts::IterativeVertexFinder::Config::reassignTracksAfterFirstFit = false

Flag to enable track reassignment after first vertex fit.

seedFinder

std::shared_ptr<IVertexFinder> Acts::IterativeVertexFinder::Config::seedFinder

Vertex seed finder.

significanceCutSeeding

double Acts::IterativeVertexFinder::Config::significanceCutSeeding = 10

Vertex finder configuration variables.

Tracks that are within a distance of

significanceCutSeeding * sqrt(sigma(d0)^2+sigma(z0)^2)

are considered compatible with the vertex.

splitVerticesTrkInvFraction

int Acts::IterativeVertexFinder::Config::splitVerticesTrkInvFraction = 2

Inverse of the fraction of tracks that will be assigned to the split vertex.

E.g., if splitVerticesTrkInvFraction = 2, about 50% of compatible tracks will be assigned to the split vertex.

trackLinearizer

TrackLinearizer Acts::IterativeVertexFinder::Config::trackLinearizer

Track linearizer.

vertexFitter

VertexFitter Acts::IterativeVertexFinder::Config::vertexFitter

Vertex fitter.