Acts::EstimateTrackParamCovarianceConfig Struct Reference

Configuration for the estimation of the covariance matrix of the track parameters with estimateTrackParamCovariance. More...

#include <Acts/Seeding/EstimateTrackParamsFromSeed.hpp>

Public Attributes
double	initialSigmaPtRel = 0.1
	The initial relative uncertainty sigma(pt)/pt.
double	initialSigmaQoverPt = 0. * UnitConstants::e / UnitConstants::GeV
	The initial sigma for the q/pt.
BoundVector	initialSigmas
	The initial sigmas for the track parameters.
BoundVector	initialVarInflation = {1., 1., 1., 1., 1., 1.}
	The inflation factors for the variances of the track parameters.
double	noTimeVarInflation = 100.
	The inflation factor for time uncertainty if the time parameter was not estimated.

Detailed Description

Configuration for the estimation of the covariance matrix of the track parameters with estimateTrackParamCovariance.

Member Data Documentation

initialSigmaPtRel

double Acts::EstimateTrackParamCovarianceConfig::initialSigmaPtRel = 0.1

The initial relative uncertainty sigma(pt)/pt.

Note

The resulting q/p sigma is added to the one in initialSigmas

initialSigmaQoverPt

double Acts::EstimateTrackParamCovarianceConfig::initialSigmaQoverPt = 0. * UnitConstants::e / UnitConstants::GeV

The initial sigma for the q/pt.

Note

The resulting q/p sigma is added to the one in initialSigmas

initialSigmas

BoundVector Acts::EstimateTrackParamCovarianceConfig::initialSigmas

Initial value:

= {1. * UnitConstants::mm,
                               1. * UnitConstants::mm,
                               1. * UnitConstants::degree,
                               1. * UnitConstants::degree,
                               1. * UnitConstants::e / UnitConstants::GeV,
                               1. * UnitConstants::ns}

The initial sigmas for the track parameters.

initialVarInflation

BoundVector Acts::EstimateTrackParamCovarianceConfig::initialVarInflation = {1., 1., 1., 1., 1., 1.}

The inflation factors for the variances of the track parameters.

noTimeVarInflation

double Acts::EstimateTrackParamCovarianceConfig::noTimeVarInflation = 100.

The inflation factor for time uncertainty if the time parameter was not estimated.