Derived configuration for the doublet seed finder using a magnetic field. More...

#include <Acts/Seeding2/DoubletSeedFinder.hpp>

Inheritance diagram for Acts::DoubletSeedFinder::DerivedConfig:

Collaboration diagram for Acts::DoubletSeedFinder::DerivedConfig:

Public Member Functions
	DerivedConfig (const Config &config, float bFieldInZ)
	Constructor for derived configuration with magnetic field.

Public Attributes
float	bFieldInZ = std::numeric_limits<float>::quiet_NaN()
	Magnetic field strength in z-direction for helix calculation.
float	minHelixDiameter2 = std::numeric_limits<float>::quiet_NaN()
	Squared minimum helix diameter derived from magnetic field and minimum pT.
Public Attributes inherited from Acts::DoubletSeedFinder::Config
Direction	candidateDirection = Direction::Forward()
	Direction of the doublet candidate space points.
float	collisionRegionMax = +150 * UnitConstants::mm
	Maximum collision region boundary in z-axis for doublet origin checks.
float	collisionRegionMin = -150 * UnitConstants::mm
	Limiting location of collision region in z-axis used to check if doublet origin is within reasonable bounds.
float	cotThetaMax = 10.01788
	Maximum allowed cotTheta between two space-points in doublet, used to check if forward angle is within bounds.
float	deltaRMax = 270 * UnitConstants::mm
	Maximum radial distance between two doublet components.
float	deltaRMin = 5 * UnitConstants::mm
	Minimum radial distance between two doublet components.
float	deltaZMax = std::numeric_limits<float>::infinity()
	Maximum z distance between two doublet components.
float	deltaZMin = -std::numeric_limits<float>::infinity()
	Minimal z distance between two doublet components.
ExperimentCuts	experimentCuts
	Delegate to apply experiment specific cuts during doublet finding.
float	helixCutTolerance = 1
	Parameter which can loosen the tolerance of the track seed to form a helix.
float	impactMax = 20 * UnitConstants::mm
	Maximum value of impact parameter estimation of the seed candidates.
bool	interactionPointCut = false
	Enable cut on the compatibility between interaction point and doublet, this is an useful approximation to speed up the seeding.
float	minPt = 400 * UnitConstants::MeV
	Minimum transverse momentum (pT) used to check the r-z slope compatibility of triplets with maximum multiple scattering effect (produced by the minimum allowed pT particle) + a certain uncertainty term.
bool	spacePointsSortedByRadius = false
	Whether the input space points are sorted by radius.

Additional Inherited Members
Public Types inherited from Acts::DoubletSeedFinder::Config
using	ExperimentCuts
	Type alias for delegate to apply experiment specific cuts during doublet finding.

Detailed Description

Derived configuration for the doublet seed finder using a magnetic field.

Constructor & Destructor Documentation

◆ DerivedConfig()

Acts::DoubletSeedFinder::DerivedConfig::DerivedConfig	(	const Config &	config,
		float	bFieldInZ )

Constructor for derived configuration with magnetic field.

Parameters

config	Base configuration to derive from
bFieldInZ	Magnetic field strength in z-direction

Member Data Documentation

◆ bFieldInZ

float Acts::DoubletSeedFinder::DerivedConfig::bFieldInZ = std::numeric_limits<float>::quiet_NaN()

Magnetic field strength in z-direction for helix calculation.

◆ minHelixDiameter2

float Acts::DoubletSeedFinder::DerivedConfig::minHelixDiameter2 = std::numeric_limits<float>::quiet_NaN()

Squared minimum helix diameter derived from magnetic field and minimum pT.

Public Member Functions