Class ATOFCluster

java.lang.Object

org.jlab.rec.atof.cluster.ATOFCluster

public class ATOFCluster
extends Object

The ATOFCluster represents clusters in the atof

Create clusters and compute their basic properties from the hits composing them.

Author:

pilleux

Constructor Summary

Constructors

Constructor	Description
ATOFCluster(ArrayList<BarHit> bar_hits, ArrayList<ATOFHit> wedge_hits)	Constructor that initializes the list of bar hits and list of wedge hits and computes the cluster properties.
ATOFCluster(ArrayList<BarHit> bar_hits, ArrayList<ATOFHit> wedge_hits, DataEvent event)	Constructor that initializes the list of bar hits and list of wedge hits and computes the cluster properties.

Method Summary

Modifier and Type	Method	Description
final void	computeClusterProperties()	Compute the cluster properties.
ArrayList<BarHit>	getBarHits()
double	getBeta()	Compute the cluster beta from the path length and time.
double	getDistanceStraightInATOF(double vx, double vy, double vz)	Computes the distance a straight track goes through the ATOF.
double	getEdepBar()	Computes the energy deposited in the bars.
double	getEdepWedge()	Computes the energy deposited in the wedges.
double	getEnergy()
int	getIndexMaxHit()
double	getInPathLength()
int	getIProj()
final ATOFHit	getMaxHit()	Retrieve the hit with maximal energy in the cluster.
final ATOFHit	getMaxWedgeHit()	Computes the wedge hit with maximal energy in the cluster.
double	getPathLength()
double	getPhi()	Compute the cluster phi angle in radians.
int	getTdc()	Returns the TDC of the maximal hit in the cluster.
double	getTime()
int	getTot()	Computes the sum of TOT in the cluster.
String	getTypeMaxHit()
ArrayList<ATOFHit>	getWedgeHits()
double	getX()
double	getY()
double	getZ()
static void	main(String[] args)
void	makeStraightTrack()	Build a straight track from the vertex to this cluster.
int	matchTrack(DataEvent event)	Matches the current track with ahdc tracks projections that have been written to the banks.
void	setBarHits(ArrayList<BarHit> bar_hits)
void	setEnergy(double energy)
void	setIndexMaxHit(int indexMaxHit)
void	setInPathLength(double inPathLength)
void	setIProj(int iProj)
void	setPathLength(double pathLength)
void	setTime(double time)
void	setTypeMaxHit(String typeMaxHit)
void	setWedgeHits(ArrayList<ATOFHit> wedge_hits)
void	setX(double x)
void	setY(double y)
void	setZ(double z)

Methods inherited from class java.lang.Object

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

Constructor Details

ATOFCluster

public ATOFCluster(ArrayList<BarHit> bar_hits,
 ArrayList<ATOFHit> wedge_hits)

Constructor that initializes the list of bar hits and list of wedge hits and computes the cluster properties.

Parameters:

bar_hits - a ArrayList of BarHit.

wedge_hits - a ArrayList of ATOFHit.

ATOFCluster

public ATOFCluster(ArrayList<BarHit> bar_hits,
 ArrayList<ATOFHit> wedge_hits,
 DataEvent event)

Constructor that initializes the list of bar hits and list of wedge hits and computes the cluster properties.

Parameters:

bar_hits - a ArrayList of BarHit.

wedge_hits - a ArrayList of ATOFHit.

event - a DataEvent with which track matching will be done.

Method Details

getBarHits

public ArrayList<BarHit> getBarHits()

setBarHits

public void setBarHits(ArrayList<BarHit> bar_hits)

getWedgeHits

public ArrayList<ATOFHit> getWedgeHits()

setWedgeHits

public void setWedgeHits(ArrayList<ATOFHit> wedge_hits)

getX

public double getX()

setX

public void setX(double x)

getY

public double getY()

setY

public void setY(double y)

getZ

public double getZ()

setZ

public void setZ(double z)

getTime

public double getTime()

setTime

public void setTime(double time)

getEnergy

public double getEnergy()

setEnergy

public void setEnergy(double energy)

getPathLength

public double getPathLength()

setPathLength

public void setPathLength(double pathLength)

getInPathLength

public double getInPathLength()

setInPathLength

public void setInPathLength(double inPathLength)

getTypeMaxHit

public String getTypeMaxHit()

setTypeMaxHit

public void setTypeMaxHit(String typeMaxHit)

getIProj

public int getIProj()

setIProj

public void setIProj(int iProj)

getIndexMaxHit

public int getIndexMaxHit()

setIndexMaxHit

public void setIndexMaxHit(int indexMaxHit)

computeClusterProperties

public final void computeClusterProperties()

Compute the cluster properties. Cluster coordinates and time are defined as the coordinates and time of the max energy hit. TO DO: Test other choices for the definitions.

matchTrack

public int matchTrack(DataEvent event)

Matches the current track with ahdc tracks projections that have been written to the banks. Calculates the match by comparing the hit's azimuthal angle and longitudinal position (z) with the track projection. If a match is found within defined tolerances for phi and z, the path length of the matched hit is updated.

Parameters:

event - a @link{DataEvent} in which the track projections bank has been written.

makeStraightTrack

public void makeStraightTrack()

Build a straight track from the vertex to this cluster. Sets the cluster path length and length through the atof from it.

getDistanceStraightInATOF

public double getDistanceStraightInATOF(double vx,
 double vy,
 double vz)

Computes the distance a straight track goes through the ATOF. The intersection point between a straight track from the vertex to the cluster and the ATOF inner cylinder is computed to that end.

Parameters:

vx - , the x coordinate of the vertex

vy - , the y coordinate of the vertex

vz - , the z coordinate of the vertex

Returns:

the distance the straight track went through in the ATOF

getEdepWedge

public double getEdepWedge()

Computes the energy deposited in the wedges.

Returns:

the energy deposited in the wedges.

getEdepBar

public double getEdepBar()

Computes the energy deposited in the bars.

Returns:

the energy deposited in the bars.

getPhi

public double getPhi()

Compute the cluster phi angle in radians.

Returns:

a double that is angle in radians

getBeta

public double getBeta()

Compute the cluster beta from the path length and time.

Returns:

a double that is beta - TO DO: Change to non-hardcoded value for c

getMaxHit

public final ATOFHit getMaxHit()

Retrieve the hit with maximal energy in the cluster. It must have been computed previously.

Returns:

a ATOFHit that is the maximal energy hit in the cluster

getTot

public int getTot()

Computes the sum of TOT in the cluster.

Returns:

an int representing the summed TOT

getTdc

public int getTdc()

Returns the TDC of the maximal hit in the cluster.

Returns:

an int representing the TDC of the maximal hit.

getMaxWedgeHit

public final ATOFHit getMaxWedgeHit()

Computes the wedge hit with maximal energy in the cluster.

Returns:

a ATOFHit that is the maximal energy hit in the wedges in the cluster.

main

public static void main(String[] args)

Parameters:

args - the command line arguments