org.lcsim.recon.cheater

Class RemoveMultipleHelicalTrackHitsCheater

java.lang.Object

org.lcsim.util.Driver

org.lcsim.recon.cheater.RemoveMultipleHelicalTrackHitsCheater

public class RemoveMultipleHelicalTrackHitsCheater
extends Driver

A driver to remove additional tracker hits from the same particle in a tracking layer. This happens in regions where tracker modules are overlapping.
The SeedTracker takes only one hit per layer and will create additional tracks from the extra hits. Not removing those additional hits leads to fake tracks as well as a huge loss in performance.
This driver uses monte carlo truth to identify hits belonging to the same particle. In addition, the removed hits are required to lie within a cone of a given opening angle as seen from the first hit of that particle in that plane. This driver should be run after digitization.

Author:

Christian Grefe

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected class	RemoveMultipleHelicalTrackHitsCheater.CompareHelicalTrackHitsByDistanceFromIP Sort HelicalTrackHits by distance from the IP

Nested classes/interfaces inherited from class org.lcsim.util.Driver

Driver.AbortRunException, Driver.NextEventException

Field Summary

Fields

Modifier and Type	Field and Description
protected double	coneAngle
protected String	trackHitCollection
protected String	trackHitRelations
protected String	trackMCRelations

Fields inherited from class org.lcsim.util.Driver

HLEVEL_DEFAULT, HLEVEL_FULL, HLEVEL_HIGH, HLEVEL_NORMAL, HLEVEL_OFF

Constructor Summary

Constructors

Constructor and Description
RemoveMultipleHelicalTrackHitsCheater()

Method Summary

Methods

Modifier and Type	Method and Description
protected void	process(EventHeader event) Called by the framework to process an event.
void	setConeAngle(double coneAngle) Sets the minimum angle between a first hit and a secondary hit in layer.
void	setTrackHitCollection(String trackHitCollection)
void	setTrackHitRelations(String trackHitRelations)
void	setTrackMCRelations(String trackMCRelations)

Methods inherited from class org.lcsim.util.Driver

add, clearStatistics, contains, detectorChanged, drivers, endOfData, getConditionsManager, getHistogramLevel, getLogger, getName, getRandom, printStatistics, processChildren, remove, resume, setHistogramLevel, setLogLevel, setRandom, startOfData, suspend

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

trackHitCollection

protected String trackHitCollection

trackHitRelations

protected String trackHitRelations

trackMCRelations

protected String trackMCRelations

coneAngle

protected double coneAngle

Constructor Detail

RemoveMultipleHelicalTrackHitsCheater

public RemoveMultipleHelicalTrackHitsCheater()

Method Detail

setTrackHitCollection

public void setTrackHitCollection(String trackHitCollection)

setTrackHitRelations

public void setTrackHitRelations(String trackHitRelations)

setTrackMCRelations

public void setTrackMCRelations(String trackMCRelations)

setConeAngle

public void setConeAngle(double coneAngle)

Sets the minimum angle between a first hit and a secondary hit in layer. If inside the cone the secondary hit will be removed.

Parameters:

coneAngle -

process

protected void process(EventHeader event)

Description copied from class: Driver

Called by the framework to process an event. Don't forget to call super.process(event) to cause the child processes to be executed. In addition the process event call can throw some special exceptions:

• NextEventException - aborts further processing of this event
• StopRunException - causes event processing to be stopped

Overrides:

process in class Driver

Parameters:

event - The event to be processed

See Also:

Driver.NextEventException, Driver.AbortRunException