Package org.jlab.rec.cvt.fit

Class CircleFitPars

java.lang.Object
org.jlab.rec.cvt.fit.CircleFitPars
public class CircleFitPars extends Object
Returns the parameters of a fit with a circle to hits in the the CLAS12 where the solenoid field bends the particle path into a helix. These hits are represented as 3-dimensional points, that map to to 2-D points in the XY plane in the detector's Global coordinate system.

  • Constructor Summary

    Constructors
    Constructor
    Description
    CircleFitPars(double xr, double yr, double rho, double phir, double docar, double chi2, double[] covmat)
     

  • Method Summary

    Modifier and Type
    Method
    Description
    double
    chisq()
    Returns the chi^2 of the fit
    double[]
    cov()
    Returns the covariance matrix of the fit
    double
    doca()
    Returns the doca to the reference point
    double
    phi()
    Returns the phi at the reference point
    double
    rho()
    Returns the radius of curvature
    double
    xref()
    Returns the x coordinate of the reference point
    double
    yref()
    Returns the y coordinate of the reference point

    Methods inherited from class java.lang.Object

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

  • Constructor Details

    • CircleFitPars

      public CircleFitPars(double xr, double yr, double rho, double phir, double docar, double chi2, double[] covmat)

  • Method Details

    • xref

      public double xref()
      Returns the x coordinate of the reference point
      Returns:

    • yref

      public double yref()
      Returns the y coordinate of the reference point
      Returns:

    • rho

      public double rho()
      Returns the radius of curvature
      Returns:

    • phi

      public double phi()
      Returns the phi at the reference point
      Returns:

    • doca

      public double doca()
      Returns the doca to the reference point
      Returns:

    • chisq

      public double chisq()
      Returns the chi^2 of the fit
      Returns:

    • cov

      public double[] cov()
      Returns the covariance matrix of the fit
      Returns: