Package org.jlab.rec.dc.trajectory

Class TrajectoryFinder

java.lang.Object

org.jlab.rec.dc.trajectory.TrajectoryFinder

public class TrajectoryFinder
extends Object

A driver class to find the trajectory of a track candidate. NOTE THAT THE PATH TO FIELD MAPS IS SET BY THE CLARA_SERVICES ENVIRONMENT VAR.

Author:

ziegler

Field Summary

Fields

Modifier and Type	Field	Description
double	mmStepSizeForIntBdl	Step size used in integral Bdl Riemann integration
double	TrajChisqProbFitXZ

Constructor Summary

Constructors

Constructor	Description
TrajectoryFinder()

Method Summary

Modifier and Type	Method	Description
Trajectory	findTrajectory(List<Cross> candCrossList, org.jlab.detector.geant4.v2.DCGeant4Factory DcDetector, org.jlab.clas.swimtools.Swim dcSwim)
void	fitTrajectory(List<Cross> candCrossList)	The parametric form of the trajectory determined from fitting the tangent values of the state vecs linearly, and constraining the quadratic parameters of the function describing the position values of the state vecs.
List<StateVec>	getStateVecsAlongTrajectory(org.jlab.detector.geant4.v2.DCGeant4Factory DcDetector)
double	integralBdl(int sector, org.jlab.detector.geant4.v2.DCGeant4Factory DcDetector, org.jlab.clas.swimtools.Swim dcSwim)

Methods inherited from class java.lang.Object

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

Field Details

mmStepSizeForIntBdl

public double mmStepSizeForIntBdl

Step size used in integral Bdl Riemann integration

TrajChisqProbFitXZ

public double TrajChisqProbFitXZ

Constructor Details

TrajectoryFinder

public TrajectoryFinder()

Method Details

findTrajectory

public Trajectory findTrajectory(List<Cross> candCrossList,
 org.jlab.detector.geant4.v2.DCGeant4Factory DcDetector,
 org.jlab.clas.swimtools.Swim dcSwim)

Parameters:

candCrossList - the input list of crosses used in determining a trajectory

DcDetector -

dcSwim -

Returns:

a trajectory object

integralBdl

public double integralBdl(int sector,
 org.jlab.detector.geant4.v2.DCGeant4Factory DcDetector,
 org.jlab.clas.swimtools.Swim dcSwim)

Parameters:

sector -

DcDetector - DC detector utility

dcSwim -

Returns:

integral Bdl

getStateVecsAlongTrajectory

public List<StateVec> getStateVecsAlongTrajectory(org.jlab.detector.geant4.v2.DCGeant4Factory DcDetector)

Parameters:

DcDetector -

Returns:

the list of state vectors along the trajectory

fitTrajectory

public void fitTrajectory(List<Cross> candCrossList)

The parametric form of the trajectory determined from fitting the tangent values of the state vecs linearly, and constraining the quadratic parameters of the function describing the position values of the state vecs.

Parameters:

candCrossList - list of crosses used in the fit