Commit in hps-java/src/main/java/org/lcsim/hps on MAIN
monitoring/svt/TrackingReconstructionPlots.java+2-21.16 -> 1.17
recon/particle/ReconParticleDriver.java+6-41.7 -> 1.8
recon/tracking/DataTrackerFakeHitDriver.java-31.10 -> 1.11
              /EcalTrackMatch.java+2-21.6 -> 1.7
              /TrackUtils.java+62-371.28 -> 1.29
              /SvtTrackExtrapolator.java-821.11 removed
recon/tracking/gbl/TruthResiduals.java+2-31.7 -> 1.8
recon/vertexing/TwoTrackVertexer.java+3-141.6 -> 1.7
users/mgraham/TrackExtrapolationAnalysis.java+4-81.6 -> 1.7
users/omoreno/ReconstructedParticleChecker.java+5-31.2 -> 1.3
             /SvtHitEfficiency.java+3-41.5 -> 1.6
             /SvtPerformance.java+1-121.6 -> 1.7
             /SvtTrackAnalysis.java+6-41.4 -> 1.5
             /SvtTrackRecoEfficiency.java+1-21.10 -> 1.11
             /TestRunTrackReconEfficiency.java+4-31.4 -> 1.5
users/phansson/CmpGenToFittedTracksDriver.java-11.1 -> 1.2
              /ECalGainDriver.java+8-41.13 -> 1.14
              /MultScatAnalysis.java+8-61.9 -> 1.10
              /ParticleHelixProducer.java+2-41.10 -> 1.11
              /TwoTrackAnlysis.java+4-41.23 -> 1.24
+123-202
1 removed + 19 modified, total 20 files
Moving extrapolation to TrackUtil class.

hps-java/src/main/java/org/lcsim/hps/monitoring/svt
TrackingReconstructionPlots.java 1.16 -> 1.17
diff -u -r1.16 -r1.17
--- TrackingReconstructionPlots.java	14 Oct 2013 22:03:09 -0000	1.16
+++ TrackingReconstructionPlots.java	14 Oct 2013 22:58:03 -0000	1.17
@@ -728,7 +728,7 @@
             HelixConverter converter = new HelixConverter(0);
             StraightLineTrack slt = converter.Convert(ht);
 
-            Hep3Vector posAtEcal = SvtTrackExtrapolator.getTrackPositionAtEcal(trk);
+            Hep3Vector posAtEcal = TrackUtils.getTrackPositionAtEcal(trk);
 
             aida.histogram1D("X (mm) @ Z=-60cm").fill(slt.getYZAtX(BeamlineConstants.HARP_POSITION)[0]);  //this is y in the tracker frame
             aida.histogram1D("Y (mm) @ Z=-60cm").fill(slt.getYZAtX(BeamlineConstants.HARP_POSITION)[1]);  //this is z in the tracker frame
@@ -868,7 +868,7 @@
             //           if (clust != null) {
             if (clust != null) {
                 
-                posAtEcal = SvtTrackExtrapolator.extrapolateTrack(trk,clust.getPosition()[2]);//.positionAtEcal();
+                posAtEcal = TrackUtils.extrapolateTrack(trk,clust.getPosition()[2]);//.positionAtEcal();
 
                 aida.histogram2D("Energy Vs Momentum").fill(clust.getEnergy(), trk.getPX() * 1000.0);
                 aida.histogram1D("Energy Over Momentum").fill(clust.getEnergy() / (trk.getPX() * 1000.0));

hps-java/src/main/java/org/lcsim/hps/recon/particle
ReconParticleDriver.java 1.7 -> 1.8
diff -u -r1.7 -r1.8
--- ReconParticleDriver.java	14 Oct 2013 22:03:09 -0000	1.7
+++ ReconParticleDriver.java	14 Oct 2013 22:58:03 -0000	1.8
@@ -4,11 +4,13 @@
 import java.util.ArrayList;
 import java.util.List;
 
+
 //--- hep ---//
 import hep.physics.vec.BasicHep3Vector;
 import hep.physics.vec.Hep3Vector;
 import hep.physics.vec.VecOp;
 
+
 //--- lcsim ---//
 import org.lcsim.event.EventHeader;
 import org.lcsim.event.ReconstructedParticle;
@@ -19,7 +21,7 @@
 
 //--- hps-java ---//
 import org.lcsim.hps.recon.ecal.HPSEcalCluster;
-import org.lcsim.hps.recon.tracking.SvtTrackExtrapolator;
+import org.lcsim.hps.recon.tracking.TrackUtils;
 
 /**
  * Driver that matches SVT Tracks and Ecal Clusters and creates
@@ -27,7 +29,7 @@
  *
  * @author Mathew Graham <[log in to unmask]>
  * @author Omar Moreno <[log in to unmask]>
- * @version $Id: ReconParticleDriver.java,v 1.7 2013/10/14 22:03:09 phansson Exp $ 
+ * @version $Id: ReconParticleDriver.java,v 1.8 2013/10/14 22:58:03 phansson Exp $ 
  */
 public abstract class ReconParticleDriver extends Driver {
 
@@ -191,7 +193,7 @@
                 	
         			
         			// Extrapolate the track to the Ecal cluster shower max
-        			Hep3Vector trkPosAtShowerMax = SvtTrackExtrapolator.extrapolateTrack(track,clusterPos.z());
+        			Hep3Vector trkPosAtShowerMax = TrackUtils.extrapolateTrack(track,clusterPos.z());
         			// Check if any of the extrapolated values are invalid.
         			// TODO: There are some track whose extrapolated coordinates
         			//        are NaN. The problem seems to be that the y-coordinate
@@ -238,7 +240,7 @@
                 	this.printDebug("Ecal cluster position: " + ecalClusterPos.toString());
                 	
                 	// Get the position of the track at the Ecal cluster shower max
-                	Hep3Vector trkPosAtShowerMax = SvtTrackExtrapolator.extrapolateTrack(matchedTrack,ecalClusterPos.z());
+                	Hep3Vector trkPosAtShowerMax = TrackUtils.extrapolateTrack(matchedTrack,ecalClusterPos.z());
         			this.printDebug("Track position at shower max: " + trkPosAtShowerMax.toString());
         			
         			// Get the distance between the track and the cluster position

hps-java/src/main/java/org/lcsim/hps/recon/tracking
DataTrackerFakeHitDriver.java 1.10 -> 1.11
diff -u -r1.10 -r1.11
--- DataTrackerFakeHitDriver.java	12 Jul 2013 22:53:18 -0000	1.10
+++ DataTrackerFakeHitDriver.java	14 Oct 2013 22:58:03 -0000	1.11
@@ -43,10 +43,8 @@
 public class DataTrackerFakeHitDriver extends Driver {
 
     private boolean debug = false;
-    TrackUtils trackUtils = new TrackUtils();
     TrackerHitUtils trackerhitutils = new TrackerHitUtils();
     Hep3Matrix detToTrk;
-    SvtTrackExtrapolator extrapolator = new SvtTrackExtrapolator();
     Hep3Vector _bfield;
     TrackerHitType trackerType = new TrackerHitType(TrackerHitType.CoordinateSystem.GLOBAL, TrackerHitType.MeasurementType.STRIP_1D);
     CoordinateSystem coordinate_system = trackerType.getCoordinateSystem();
@@ -229,7 +227,6 @@
             }
 
 
-            extrapolator.setTrack(helix.parameters());
 
             int n_hits_top = 0;
             int n_hits_bot = 0;

hps-java/src/main/java/org/lcsim/hps/recon/tracking
EcalTrackMatch.java 1.6 -> 1.7
diff -u -r1.6 -r1.7
--- EcalTrackMatch.java	14 Oct 2013 22:03:09 -0000	1.6
+++ EcalTrackMatch.java	14 Oct 2013 22:58:03 -0000	1.7
@@ -52,7 +52,7 @@
     }
 
     public double dist(Track track, int dir) {
-        Hep3Vector trk_pos = SvtTrackExtrapolator.getTrackPositionAtEcal(track);
+        Hep3Vector trk_pos = TrackUtils.getTrackPositionAtEcal(track);
         double dx;
         if (dir == 0) {
             dx = cluster.getPosition()[0] - trk_pos.x();
@@ -66,7 +66,7 @@
     }
 
     public double dR(Track track) {
-        Hep3Vector trk_pos = SvtTrackExtrapolator.getTrackPositionAtEcal(track);
+        Hep3Vector trk_pos = TrackUtils.getTrackPositionAtEcal(track);
         double dx = dX(track);
         double dy = dY(track);
         double dr = Math.sqrt(dx * dx + dy * dy);

hps-java/src/main/java/org/lcsim/hps/recon/tracking
TrackUtils.java 1.28 -> 1.29
diff -u -r1.28 -r1.29
--- TrackUtils.java	14 Oct 2013 22:03:09 -0000	1.28
+++ TrackUtils.java	14 Oct 2013 22:58:03 -0000	1.29
@@ -36,51 +36,22 @@
 import org.lcsim.recon.tracking.seedtracker.SeedTrack;
 
 /**
+ * Assorted helper functions for the track and helix objects in lcsim.
+ * Re-use as much of HelixUtils as possible.
  * 
  * @author Omar Moreno <[log in to unmask]>
- * @version $Id: TrackUtils.java,v 1.28 2013/10/14 22:03:09 phansson Exp $
- * TODO: Switch to JLab coordinates
+ * @version $Id: TrackUtils.java,v 1.29 2013/10/14 22:58:03 phansson Exp $
+ * TODO: Switch to tracking/LCsim coordinates for the extrapolation output!
  */
 
 public class TrackUtils {
 
-    protected boolean _debug = false;
-	protected boolean isTrackSet = false;
-	protected double[] trackParameters = null;
-	    
-        
 	/**
-	 * 
-	 */
-	public TrackUtils(){
-		isTrackSet = false;
-	}
-	
-        /**
-	 * 
-	 */
-	public void setDebug(boolean debug){		
-		this._debug = debug;
-    }
-        
-        /**
-	 * 
+	 * Private constructor to make class static only
 	 */
-	public void setTrack(double[] pars){
-		trackParameters = pars;
-        isTrackSet = true;
+	private TrackUtils(){
 	}
 	
-    /**
-     * 
-     */
-	public void setTrack(Track track){
-		this.setTrack(track.getTrackParameters());
-	}
-	
-	
-
-      
 	public static Hep3Vector extrapolateHelixToXPlane(Track track, double x){
 		return extrapolateHelixToXPlane(getHTF(track),x);
 	}
@@ -168,7 +139,58 @@
         
         
         
-        /**
+        public static Hep3Vector getTrackPositionAtHarp(Track track){
+			return extrapolateTrack(track, BeamlineConstants.HARP_POSITION);
+		}
+
+		public static Hep3Vector getTrackPositionAtEcal(Track track){
+			return extrapolateTrack(track, BeamlineConstants.ECAL_FACE);
+		}
+
+		public static Hep3Vector extrapolateTrack(Track track, double z){
+		
+			Hep3Vector trackPosition = null;
+			double dz = 0;
+			if(z >= BeamlineConstants.DIPOLE_EDGE){
+				trackPosition = extrapolateHelixToXPlane(track, BeamlineConstants.DIPOLE_EDGE);
+				dz = z - BeamlineConstants.DIPOLE_EDGE;
+			} else if(z <= BeamlineConstants.DIPOLE_EDGELOW){
+				trackPosition  = extrapolateHelixToXPlane(track, BeamlineConstants.DIPOLE_EDGELOW);
+				dz = z - trackPosition.x();
+			} else {
+				Hep3Vector detVecTracking = extrapolateHelixToXPlane(track,z);
+				//System.out.printf("detVec %s\n", detVecTracking.toString());
+				return new BasicHep3Vector(detVecTracking.y(),detVecTracking.z(),detVecTracking.x());
+			}
+			
+			// Get the track azimuthal angle
+			double phi = getPhi(track, trackPosition);
+		
+			// Find the distance to the point of interest
+			double r = dz/(getSinTheta(track)*Math.cos(phi));
+			double dx = r*getSinTheta(track)*Math.sin(phi);
+			double dy = r*getCosTheta(track);
+			
+			// Find the track position at the point of interest
+			double x = trackPosition.y() + dx;
+			double y = trackPosition.z() + dy;
+			
+			return new BasicHep3Vector(x, y, z);
+		}
+
+		public static Hep3Vector extrapolateTrack(HelicalTrackFit helix, double z){
+		    SeedTrack trk = new SeedTrack();
+		    //bfield = Math.abs((detector.getFieldMap().getField(new BasicHep3Vector(0, 0, 0)).y()));
+		    double bfield = 0.;        
+		    // Here we aren't really using anything related to momentum so B-field is not important
+		    trk.setTrackParameters(helix.parameters(), bfield); // Sets first TrackState.
+		    trk.setCovarianceMatrix(helix.covariance()); // Modifies first TrackState.
+		    trk.setChisq(helix.chisqtot());
+		    trk.setNDF(helix.ndf()[0]+helix.ndf()[1]);        
+		    return TrackUtils.extrapolateTrack(trk,z);
+		}
+
+		/**
          * @param helix input helix object
          * @param origin of the plane to intercept
          * @param normal of the plane to intercept
@@ -229,6 +251,10 @@
     	    double z = z0 + s_at_x * slope;
     	    BasicHep3Vector pos = new BasicHep3Vector(x,y,z);
     	    //System.out.printf("pos %s xc %f phi_at_x %f dphi_at_x %f s_at_x %f\n", pos.toString(),xc,phi_at_x,dphi_at_x,s_at_x);
+    	    Hep3Vector posXCheck =TrackUtils.extrapolateHelixToXPlane(helix, x);
+    	    if(VecOp.sub(pos,posXCheck).magnitude()>0.0000001) {
+    	    	throw new RuntimeException(String.format("ERROR the helix propagation equations do not agree? (%f,%f,%f) vs (%f,%f,%f) in HelixUtils",pos.x(),pos.y(),pos.z(),posXCheck.x(),posXCheck.y(),posXCheck.z()));
+    	    }
     	    return pos;
         }
         
@@ -337,7 +363,6 @@
             //System.out.printf("x %f s %f smap %f\n",hth.x(),s,s_wrong);
             if(Double.isNaN(s)) {
                 double xc=track.xc();
-                double yc=track.yc();
                 double RC = track.R();
                 System.out.printf("calculateTrackHitResidual: s is NaN. p=%.3f RC=%.3f, x=%.3f, xc=%.3f\n",track.p(-0.491),RC,hth.x(),xc);
             }         

hps-java/src/main/java/org/lcsim/hps/recon/tracking
SvtTrackExtrapolator.java removed after 1.11
diff -N SvtTrackExtrapolator.java
--- SvtTrackExtrapolator.java	14 Oct 2013 22:03:09 -0000	1.11
+++ /dev/null	1 Jan 1970 00:00:00 -0000
@@ -1,82 +0,0 @@
-package org.lcsim.hps.recon.tracking;
-
-//--- org.lcsim ---//
-import hep.physics.vec.BasicHep3Vector;
-import hep.physics.vec.Hep3Vector;
-
-import org.lcsim.event.Track;
-import org.lcsim.fit.helicaltrack.HelicalTrackFit;
-import org.lcsim.hps.event.BeamlineConstants;
-import org.lcsim.recon.tracking.seedtracker.SeedTrack;
-
-public class SvtTrackExtrapolator extends TrackUtils {
-
-	/**
-	 * 
-	 */
-	public SvtTrackExtrapolator(){
-	}
-
-	/**
-	 * 
-	 */
-	public SvtTrackExtrapolator(double[] pars){
-		setTrack(pars);
-	}
-	
-	
-	/**
-	 * 
-	 */
-	public static Hep3Vector getTrackPositionAtEcal(Track track){
-		return extrapolateTrack(track, BeamlineConstants.ECAL_FACE);
-	}
-	
-	public static Hep3Vector getTrackPositionAtHarp(Track track){
-		return extrapolateTrack(track, BeamlineConstants.HARP_POSITION);
-	}
-	
-	
-	public static Hep3Vector extrapolateTrack(HelicalTrackFit helix, double z){
-        SeedTrack trk = new SeedTrack();
-        //bfield = Math.abs((detector.getFieldMap().getField(new BasicHep3Vector(0, 0, 0)).y()));
-        double bfield = 0.;        
-        // Here we aren't really using anything related to momentum so B-field is not important
-        trk.setTrackParameters(helix.parameters(), bfield); // Sets first TrackState.
-        trk.setCovarianceMatrix(helix.covariance()); // Modifies first TrackState.
-        trk.setChisq(helix.chisqtot());
-        trk.setNDF(helix.ndf()[0]+helix.ndf()[1]);        
-        return extrapolateTrack(trk,z);
-	}
-	
-	public static Hep3Vector extrapolateTrack(Track track, double z){
-	
-		Hep3Vector trackPosition = null;
-		double dz = 0;
-		if(z >= BeamlineConstants.DIPOLE_EDGE){
-			trackPosition = extrapolateHelixToXPlane(track, BeamlineConstants.DIPOLE_EDGE);
-			dz = z - BeamlineConstants.DIPOLE_EDGE;
-		} else if(z <= BeamlineConstants.DIPOLE_EDGELOW){
-			trackPosition  = extrapolateHelixToXPlane(track, BeamlineConstants.DIPOLE_EDGELOW);
-			dz = z - trackPosition.x();
-		} else {
-			Hep3Vector detVecTracking = extrapolateHelixToXPlane(track,z);
-			//System.out.printf("detVec %s\n", detVecTracking.toString());
-			return new BasicHep3Vector(detVecTracking.y(),detVecTracking.z(),detVecTracking.x());
-		}
-		
-		// Get the track azimuthal angle
-		double phi = getPhi(track, trackPosition);
-
-		// Find the distance to the point of interest
-		double r = dz/(getSinTheta(track)*Math.cos(phi));
-		double dx = r*getSinTheta(track)*Math.sin(phi);
-		double dy = r*getCosTheta(track);
-		
-		// Find the track position at the point of interest
-		double x = trackPosition.y() + dx;
-		double y = trackPosition.z() + dy;
-		
-		return new BasicHep3Vector(x, y, z);
-	}
-}

hps-java/src/main/java/org/lcsim/hps/recon/tracking/gbl
TruthResiduals.java 1.7 -> 1.8
diff -u -r1.7 -r1.8
--- TruthResiduals.java	14 Oct 2013 22:03:09 -0000	1.7
+++ TruthResiduals.java	14 Oct 2013 22:58:03 -0000	1.8
@@ -22,7 +22,6 @@
 import org.lcsim.event.SimTrackerHit;
 import org.lcsim.fit.helicaltrack.HelicalTrackFit;
 import org.lcsim.hps.event.HPSTransformations;
-import org.lcsim.hps.recon.tracking.SvtTrackExtrapolator;
 import org.lcsim.hps.recon.tracking.TrackUtils;
 import org.lcsim.util.aida.AIDA;
 
@@ -137,7 +136,7 @@
                     //HelicalTrackFit htfTruth = TrackUtils.getHTF(mcp, -1*this._B.z());
                     HelicalTrackFit htfTruth = TrackUtils.getHTF(mcp, -1*this._B.z());
                     
-                    Hep3Vector trkposExtraPolator = SvtTrackExtrapolator.extrapolateTrack(htfTruth,simHitPosTracking.x());
+                    Hep3Vector trkposExtraPolator = TrackUtils.extrapolateTrack(htfTruth,simHitPosTracking.x());
                     //System.out.printf("trkposextrapol (det) %s\n",trkposExtraPolator.toString());
                     
                     trkposExtraPolator = this._hpstrans.transformVectorToTracking(trkposExtraPolator);
@@ -176,7 +175,7 @@
                     	double xpos = mcp.getOriginZ();
                     	while(xpos< 100.) {
                     		xpos += dx;
-                    		trkposExtraPolator = this._hpstrans.transformVectorToTracking(SvtTrackExtrapolator.extrapolateTrack(htfTruth,xpos));
+                    		trkposExtraPolator = this._hpstrans.transformVectorToTracking(TrackUtils.extrapolateTrack(htfTruth,xpos));
                     		double ypos = trkposExtraPolator.y();
                     		trkpos_y_vs_x.fill(xpos,ypos);
                     	}

hps-java/src/main/java/org/lcsim/hps/recon/vertexing
TwoTrackVertexer.java 1.6 -> 1.7
diff -u -r1.6 -r1.7
--- TwoTrackVertexer.java	14 Oct 2013 22:03:09 -0000	1.6
+++ TwoTrackVertexer.java	14 Oct 2013 22:58:03 -0000	1.7
@@ -7,7 +7,6 @@
 import hep.physics.matrix.SymmetricMatrix;
 import hep.physics.vec.BasicHep3Vector;
 import hep.physics.vec.Hep3Vector;
-import hep.physics.vec.SpacePoint;
 import hep.physics.vec.VecOp;
 
 import org.lcsim.event.Track;
@@ -16,23 +15,17 @@
 import org.lcsim.fit.helicaltrack.HelicalTrackFit;
 import org.lcsim.fit.helicaltrack.HelixUtils;
 import org.lcsim.hps.event.BeamlineConstants;
-import org.lcsim.hps.event.HPSTransformations;
 import org.lcsim.hps.recon.tracking.HPSTrack;
-import org.lcsim.hps.recon.tracking.SvtTrackExtrapolator;
-import org.lcsim.recon.tracking.seedtracker.SeedCandidate;
+import org.lcsim.hps.recon.tracking.TrackUtils;
 import org.lcsim.recon.tracking.seedtracker.SeedTrack;
-import org.lcsim.spacegeom.SpaceVector;
 import org.lcsim.util.swim.Helix;
-import org.lcsim.util.swim.Trajectory;
 
 /**
  *
  * @author phansson
  */
 public class TwoTrackVertexer extends TwoLineVertexer {
-    private SvtTrackExtrapolator trackExtraPolator = new SvtTrackExtrapolator();
     private HelixConverter converter = new HelixConverter(0.);
-    private HPSTransformations detToTrk = new HPSTransformations();
     private Track trk1=null;
     private Track trk2=null;
     
@@ -48,17 +41,13 @@
         if(this.trk1==null || this.trk2==null) return false;
         else return true;
     }
-    
-    public SvtTrackExtrapolator extrapolator() {
-        return trackExtraPolator;
-    }
-    
+        
     public HelixConverter converter() {
         return this.converter;
     }
     
     private Hep3Vector getPosition(Track trk, double zposition) {
-        return SvtTrackExtrapolator.extrapolateTrack(trk, zposition);
+        return TrackUtils.extrapolateTrack(trk, zposition);
     }
 
     @Override

hps-java/src/main/java/org/lcsim/hps/users/mgraham
TrackExtrapolationAnalysis.java 1.6 -> 1.7
diff -u -r1.6 -r1.7
--- TrackExtrapolationAnalysis.java	14 Oct 2013 22:03:09 -0000	1.6
+++ TrackExtrapolationAnalysis.java	14 Oct 2013 22:58:03 -0000	1.7
@@ -19,7 +19,7 @@
 import org.lcsim.hps.monitoring.AIDAFrame;
 import org.lcsim.hps.recon.ecal.HPSEcalCluster;
 import org.lcsim.hps.recon.tracking.HPSTrack;
-import org.lcsim.hps.recon.tracking.SvtTrackExtrapolator;
+import org.lcsim.hps.recon.tracking.TrackUtils;
 import org.lcsim.hps.recon.vertexing.HelixConverter;
 import org.lcsim.hps.recon.vertexing.StraightLineTrack;
 import org.lcsim.recon.tracking.seedtracker.SeedCandidate;
@@ -89,12 +89,8 @@
             HelixConverter converter = new HelixConverter(0);
             StraightLineTrack slt = converter.Convert(ht);
 
-            //ExtendTrack extend = new ExtendTrack();
-            SvtTrackExtrapolator extend = new SvtTrackExtrapolator();
-            extend.setTrack(stEle);
-            //Hep3Vector posAtEcal = extend.positionAtEcal();
-            Hep3Vector posAtEcal = SvtTrackExtrapolator.getTrackPositionAtEcal(trk);
-            Hep3Vector extendAtConverter = SvtTrackExtrapolator.extrapolateTrack(trk,BeamlineConstants.HARP_POSITION);
+            Hep3Vector posAtEcal = TrackUtils.getTrackPositionAtEcal(trk);
+            Hep3Vector extendAtConverter = TrackUtils.extrapolateTrack(trk,BeamlineConstants.HARP_POSITION);
 
 
             int isTop = -1;
@@ -151,7 +147,7 @@
                 double zCluster=clust.getPosition()[2];
  //               double zCluster=1450.0;
                  Hep3Vector posAtEcalHPS = hpstrk.getPositionAtZMap(750,zCluster, 5.0)[0];
-                Hep3Vector posAtEcalExtend= SvtTrackExtrapolator.extrapolateTrack(trk,zCluster);
+                Hep3Vector posAtEcalExtend= TrackUtils.extrapolateTrack(trk,zCluster);
                 aida.histogram2D("ECal Extrapolation X :  HPS vs Extend").fill( posAtEcalExtend.y(),posAtEcalHPS.x()-posAtEcalExtend.y());
                 aida.histogram2D("ECal Extrapolation Y :  HPS vs Extend").fill( posAtEcalExtend.z(),posAtEcalHPS.y()-posAtEcalExtend.z());
                 double dX = posAtEcalHPS.x() - clust.getPosition()[0];

hps-java/src/main/java/org/lcsim/hps/users/omoreno
ReconstructedParticleChecker.java 1.2 -> 1.3
diff -u -r1.2 -r1.3
--- ReconstructedParticleChecker.java	14 Oct 2013 22:03:10 -0000	1.2
+++ ReconstructedParticleChecker.java	14 Oct 2013 22:58:03 -0000	1.3
@@ -4,6 +4,7 @@
 import java.util.ArrayList;
 import java.util.List;
 
+
 //--- hep ---//
 import hep.aida.IHistogram1D;
 import hep.aida.IPlotter;
@@ -11,6 +12,7 @@
 import hep.physics.vec.Hep3Vector;
 import hep.physics.vec.VecOp;
 
+
 //--- lcsim ---//
 import org.lcsim.event.EventHeader;
 import org.lcsim.event.ReconstructedParticle;
@@ -21,12 +23,12 @@
 import org.lcsim.geometry.Detector;
 
 //--- hps-java ---//
-import org.lcsim.hps.recon.tracking.SvtTrackExtrapolator;
+import org.lcsim.hps.recon.tracking.TrackUtils;
 
 /**
  * 
  * @author Omar Moreno <[log in to unmask]>
- * @version $Id: ReconstructedParticleChecker.java,v 1.2 2013/10/14 22:03:10 phansson Exp $
+ * @version $Id: ReconstructedParticleChecker.java,v 1.3 2013/10/14 22:58:03 phansson Exp $
  *
  */
 public class ReconstructedParticleChecker extends Driver {
@@ -105,7 +107,7 @@
 			}
 		
 			Hep3Vector ecalPosition = new BasicHep3Vector(ecalClusters.get(0).getPosition()); 
-			Hep3Vector trackPositionAtEcal = SvtTrackExtrapolator.extrapolateTrack(tracks.get(0),ecalPosition.z()); 
+			Hep3Vector trackPositionAtEcal = TrackUtils.extrapolateTrack(tracks.get(0),ecalPosition.z()); 
 			xPositionResidual.fill(trackPositionAtEcal.x() - ecalPosition.x());
 			yPositionResidual.fill(trackPositionAtEcal.y() - ecalPosition.y());
 			zPositionResidual.fill(trackPositionAtEcal.z() - ecalPosition.z());

hps-java/src/main/java/org/lcsim/hps/users/omoreno
SvtHitEfficiency.java 1.5 -> 1.6
diff -u -r1.5 -r1.6
--- SvtHitEfficiency.java	14 Oct 2013 22:03:10 -0000	1.5
+++ SvtHitEfficiency.java	14 Oct 2013 22:58:03 -0000	1.6
@@ -16,6 +16,7 @@
 import java.util.List;
 import java.util.Map;
 
+
 //--- lcsim ---//
 import org.lcsim.util.Driver;
 import org.lcsim.util.aida.AIDA;
@@ -31,12 +32,10 @@
 import org.lcsim.fit.helicaltrack.HelicalTrackHit;
 import org.lcsim.geometry.Detector;
 import org.lcsim.detector.tracker.silicon.ChargeCarrier;
-
 import org.lcsim.hps.recon.tracking.HPSSVTCalibrationConstants;
 //--- hps-java ---//
 import org.lcsim.hps.recon.tracking.SvtUtils;
 import org.lcsim.hps.recon.tracking.TrackUtils;
-import org.lcsim.hps.recon.tracking.SvtTrackExtrapolator;
 import org.lcsim.hps.recon.tracking.TrackerHitUtils;
 import org.lcsim.hps.monitoring.AIDAFrame;
 import org.lcsim.hps.recon.ecal.HPSEcalCluster;
@@ -397,8 +396,8 @@
         Hep3Vector frontSensorPos = sensors.get(0).getGeometry().getPosition();
         Hep3Vector rearSensorPos = sensors.get(1).getGeometry().getPosition();
         
-        this.frontTrackPos = SvtTrackExtrapolator.extrapolateTrack(track,frontSensorPos.z());
-        this.rearTrackPos = SvtTrackExtrapolator.extrapolateTrack(track,rearSensorPos.z());
+        this.frontTrackPos = TrackUtils.extrapolateTrack(track,frontSensorPos.z());
+        this.rearTrackPos = TrackUtils.extrapolateTrack(track,rearSensorPos.z());
         
         if(this.sensorContainsTrack(frontTrackPos, sensors.get(0)) && this.sensorContainsTrack(rearTrackPos, sensors.get(1))){
 //        	if(this.sensorContainsTrack(trackPos, sensor))

hps-java/src/main/java/org/lcsim/hps/users/omoreno
SvtPerformance.java 1.6 -> 1.7
diff -u -r1.6 -r1.7
--- SvtPerformance.java	24 May 2013 01:54:16 -0000	1.6
+++ SvtPerformance.java	14 Oct 2013 22:58:03 -0000	1.7
@@ -3,12 +3,9 @@
 import hep.aida.IHistogram1D;
 import hep.aida.IHistogram2D;
 import hep.aida.IPlotter;
-import hep.physics.vec.Hep3Vector;
 
 import java.util.ArrayList;
-import java.util.HashMap;
 import java.util.List;
-import java.util.Map;
 import java.util.Set;
 
 import org.lcsim.detector.tracker.silicon.SiSensor;
@@ -17,20 +14,14 @@
 import org.lcsim.event.Track;
 import org.lcsim.event.TrackerHit;
 import org.lcsim.fit.helicaltrack.HelicalTrackCross;
-import org.lcsim.fit.helicaltrack.HelicalTrackHit;
 import org.lcsim.fit.helicaltrack.HelicalTrackStrip;
 import org.lcsim.geometry.Detector;
-import org.lcsim.hps.monitoring.AIDAFrame;
-import org.lcsim.hps.recon.ecal.HPSEcalCluster;
 import org.lcsim.hps.recon.tracking.HPSSVTCalibrationConstants;
 import org.lcsim.hps.recon.tracking.HPSSVTCalibrationConstants.ChannelConstants;
 import org.lcsim.hps.recon.tracking.HPSShapeFitParameters;
 import org.lcsim.hps.recon.tracking.HPSShaperAnalyticFitAlgorithm;
-import org.lcsim.hps.recon.tracking.SvtTrackExtrapolator;
 import org.lcsim.hps.recon.tracking.SvtUtils;
 import org.lcsim.hps.recon.tracking.TrackUtils;
-import org.lcsim.recon.tracking.digitization.sisim.SiTrackerHitStrip1D;
-import org.lcsim.recon.tracking.seedtracker.SeedTrack;
 import org.lcsim.util.Driver;
 import org.lcsim.util.aida.AIDA;
 
@@ -38,14 +29,12 @@
  * Svt Performance Plots
  * 
  * @author Omar Moreno <[log in to unmask]>
- * @version $Id: SvtPerformance.java,v 1.6 2013/05/24 01:54:16 omoreno Exp $
+ * @version $Id: SvtPerformance.java,v 1.7 2013/10/14 22:58:03 phansson Exp $
  */
 public class SvtPerformance extends Driver {
 
     private AIDA aida;
     private List<IPlotter> plotters = new ArrayList<IPlotter>();
-    TrackUtils trkUtil = new TrackUtils();
-    SvtTrackExtrapolator extrapolator = new SvtTrackExtrapolator();
     HPSShaperAnalyticFitAlgorithm shaperFitter = new HPSShaperAnalyticFitAlgorithm();
 
     String sensorName = null;

hps-java/src/main/java/org/lcsim/hps/users/omoreno
SvtTrackAnalysis.java 1.4 -> 1.5
diff -u -r1.4 -r1.5
--- SvtTrackAnalysis.java	14 Oct 2013 22:03:10 -0000	1.4
+++ SvtTrackAnalysis.java	14 Oct 2013 22:58:03 -0000	1.5
@@ -7,6 +7,7 @@
 import java.util.Map;
 
 
+
 //--- org.lcsim ---//
 import org.lcsim.event.EventHeader;
 import org.lcsim.event.RawTrackerHit;
@@ -18,23 +19,24 @@
 import org.lcsim.util.aida.AIDA;
 
 
+
 //--- hep ---//
 import hep.aida.IPlotter;
 import hep.physics.vec.Hep3Vector;
 
 
+
 //--- hps-java ---//
 import org.lcsim.hps.monitoring.AIDAFrame;
 import org.lcsim.hps.monitoring.Resettable;
 import org.lcsim.hps.recon.ecal.HPSEcalCluster;
 import org.lcsim.hps.recon.tracking.HPSFittedRawTrackerHit;
-import org.lcsim.hps.recon.tracking.SvtTrackExtrapolator;
 import org.lcsim.hps.recon.tracking.TrackUtils;
 
 /**
  * 
  * @author Omar Moreno
- * @version $Id: SvtTrackAnalysis.java,v 1.4 2013/10/14 22:03:10 phansson Exp $
+ * @version $Id: SvtTrackAnalysis.java,v 1.5 2013/10/14 22:58:03 phansson Exp $
  *
  */
 
@@ -315,9 +317,9 @@
     	
     	for(SeedTrack track : tracks){
     		ntracks++;
-    		Hep3Vector positionEcal = SvtTrackExtrapolator.getTrackPositionAtEcal(track);
+    		Hep3Vector positionEcal = TrackUtils.getTrackPositionAtEcal(track);
     		System.out.println("Position at Ecal: " + positionEcal);
-    		Hep3Vector positionConverter = SvtTrackExtrapolator.extrapolateTrack(track,-700);
+    		Hep3Vector positionConverter = TrackUtils.extrapolateTrack(track,-700);
     	
     		aida.histogram2D("Track Position at Ecal").fill(positionEcal.y(), positionEcal.z());
     		aida.histogram2D("Track Position at Harp").fill(positionConverter.y(), positionConverter.z());

hps-java/src/main/java/org/lcsim/hps/users/omoreno
SvtTrackRecoEfficiency.java 1.10 -> 1.11
diff -u -r1.10 -r1.11
--- SvtTrackRecoEfficiency.java	6 Feb 2013 21:10:38 -0000	1.10
+++ SvtTrackRecoEfficiency.java	14 Oct 2013 22:58:03 -0000	1.11
@@ -52,7 +52,7 @@
 /**
  * 
  * @author Omar Moreno <[log in to unmask]>
- * @version $Id: SvtTrackRecoEfficiency.java,v 1.10 2013/02/06 21:10:38 omoreno Exp $ 
+ * @version $Id: SvtTrackRecoEfficiency.java,v 1.11 2013/10/14 22:58:03 phansson Exp $ 
  */
 public class SvtTrackRecoEfficiency extends Driver {
 
@@ -63,7 +63,6 @@
     private Map<Integer, List<SimTrackerHit>> topSimTrackerHitsList = new HashMap<Integer, List<SimTrackerHit>>();
     private Map<Integer, List<SimTrackerHit>> bottomSimTrackerHitsList = new HashMap<Integer, List<SimTrackerHit>>();
 
-    TrackUtils trkUtils = new TrackUtils();
     FindableTrack findable = null;
     TrackAnalysis trkAnalysis = null;
     RelationalTable<SimTrackerHit, MCParticle> simHitToMcParticle;

hps-java/src/main/java/org/lcsim/hps/users/omoreno
TestRunTrackReconEfficiency.java 1.4 -> 1.5
diff -u -r1.4 -r1.5
--- TestRunTrackReconEfficiency.java	14 Oct 2013 22:03:10 -0000	1.4
+++ TestRunTrackReconEfficiency.java	14 Oct 2013 22:58:04 -0000	1.5
@@ -4,6 +4,7 @@
 import java.util.ArrayList;
 import java.util.List;
 
+
 //--- hep ---//
 import hep.aida.IHistogram1D;
 import hep.aida.IPlotter;
@@ -11,6 +12,7 @@
 import hep.physics.vec.Hep3Vector;
 import hep.physics.vec.VecOp;
 
+
 //--- lcsim ---//
 import org.lcsim.util.Driver;
 import org.lcsim.util.aida.AIDA;
@@ -20,7 +22,6 @@
 import org.lcsim.event.GenericObject;
 
 //--- hps-java ---//
-import org.lcsim.hps.recon.tracking.SvtTrackExtrapolator;
 import org.lcsim.hps.recon.tracking.TrackUtils;
 import org.lcsim.hps.recon.ecal.HPSEcalCluster;
 
@@ -29,7 +30,7 @@
  * method. 
  * 
  * @author Omar Moreno <[log in to unmask]>
- * @version $Id: TestRunTrackReconEfficiency.java,v 1.4 2013/10/14 22:03:10 phansson Exp $
+ * @version $Id: TestRunTrackReconEfficiency.java,v 1.5 2013/10/14 22:58:04 phansson Exp $
  */
 public class TestRunTrackReconEfficiency  extends Driver {
     
@@ -340,7 +341,7 @@
     	Track matchedTrack = null; 
     	for(Track track : tracks){
     		
-    		Hep3Vector trkPosAtShowerMax = SvtTrackExtrapolator.extrapolateTrack(track,clusterPos.z());
+    		Hep3Vector trkPosAtShowerMax = TrackUtils.extrapolateTrack(track,clusterPos.z());
     		if(Double.isNaN(trkPosAtShowerMax.x()) || Double.isNaN(trkPosAtShowerMax.y())){
     			this.printDebug("Invalid track position");
     			return false; 

hps-java/src/main/java/org/lcsim/hps/users/phansson
CmpGenToFittedTracksDriver.java 1.1 -> 1.2
diff -u -r1.1 -r1.2
--- CmpGenToFittedTracksDriver.java	17 Oct 2012 22:52:29 -0000	1.1
+++ CmpGenToFittedTracksDriver.java	14 Oct 2013 22:58:04 -0000	1.2
@@ -34,7 +34,6 @@
     private String outputPlotFileName="";
     private boolean hideFrame = false;
     private boolean _debug = false;
-    private TrackUtils _trackUtils = new TrackUtils();
     
     private AIDAFrame plotterFrame;
     ICloud1D _h_chi2;

hps-java/src/main/java/org/lcsim/hps/users/phansson
ECalGainDriver.java 1.13 -> 1.14
diff -u -r1.13 -r1.14
--- ECalGainDriver.java	14 Oct 2013 22:03:10 -0000	1.13
+++ ECalGainDriver.java	14 Oct 2013 22:58:04 -0000	1.14
@@ -1,17 +1,21 @@
 package org.lcsim.hps.users.phansson;
 
 import org.lcsim.hps.recon.ecal.*;
+
 import hep.aida.*;
 import hep.aida.ref.plotter.PlotterRegion;
+
 import java.awt.event.ActionEvent;
 import java.awt.event.ActionListener;
 import java.io.*;
 import java.util.List;
 import java.util.logging.Level;
 import java.util.logging.Logger;
+
 import javax.swing.JButton;
 import javax.swing.JComboBox;
 import javax.swing.JLabel;
+
 import org.lcsim.event.CalorimeterHit;
 import org.lcsim.event.EventHeader;
 import org.lcsim.event.Track;
@@ -22,7 +26,7 @@
 import org.lcsim.hps.monitoring.Resettable;
 import org.lcsim.hps.recon.ecal.HPSEcalCluster;
 import org.lcsim.hps.recon.tracking.EcalTrackMatch;
-import org.lcsim.hps.recon.tracking.SvtTrackExtrapolator;
+import org.lcsim.hps.recon.tracking.TrackUtils;
 import org.lcsim.util.Driver;
 import org.lcsim.util.aida.AIDA;
 
@@ -272,7 +276,7 @@
             BaseTrack trk = (BaseTrack) track;
             trk.setTrackParameters(trk.getTrackStates().get(0).getParameters(), -0.491);
             if (debug) {
-                if (SvtTrackExtrapolator.getTrackPositionAtEcal(trk).y() > 0) {
+                if (TrackUtils.getTrackPositionAtEcal(trk).y() > 0) {
                     trTop++;
                 } else {
                     trBot++;
@@ -295,7 +299,7 @@
 
             System.out.println(tracks.size() + " tracks in this event");
             for (Track track : tracks) {
-                System.out.println(SvtTrackExtrapolator.getTrackPositionAtEcal(track));
+                System.out.println(TrackUtils.getTrackPositionAtEcal(track));
             }
         }
 
@@ -329,7 +333,7 @@
                 if (debug) {
                     int[] pos = getCrystalPair(bestCl);
                     System.out.format("Matched cluster: [%f\t%f\t%f], ix = %d, iy = %d\n", bestCl.getPosition()[2], bestCl.getPosition()[0], bestCl.getPosition()[1], pos[0], pos[1]);
-                    System.out.println("Matched track: " + SvtTrackExtrapolator.getTrackPositionAtEcal(bestTrk));
+                    System.out.println("Matched track: " + TrackUtils.getTrackPositionAtEcal(bestTrk));
                     System.out.println("Distance: " + minDist);
                 }
                 processMatchedPair(event, bestCl, bestTrk);

hps-java/src/main/java/org/lcsim/hps/users/phansson
MultScatAnalysis.java 1.9 -> 1.10
diff -u -r1.9 -r1.10
--- MultScatAnalysis.java	14 Oct 2013 22:03:10 -0000	1.9
+++ MultScatAnalysis.java	14 Oct 2013 22:58:04 -0000	1.10
@@ -5,6 +5,7 @@
 import hep.physics.vec.BasicHepLorentzVector;
 import hep.physics.vec.Hep3Vector;
 import hep.physics.vec.HepLorentzVector;
+
 import java.io.IOException;
 import java.util.ArrayList;
 import java.util.HashSet;
@@ -12,6 +13,7 @@
 import java.util.Set;
 import java.util.logging.Level;
 import java.util.logging.Logger;
+
 import org.lcsim.detector.identifier.*;
 import org.lcsim.event.CalorimeterHit;
 import org.lcsim.event.Cluster;
@@ -25,7 +27,7 @@
 import org.lcsim.hps.recon.ecal.HPSEcalCluster;
 import org.lcsim.hps.recon.ecal.EcalConditions;
 import org.lcsim.hps.recon.tracking.EcalTrackMatch;
-import org.lcsim.hps.recon.tracking.SvtTrackExtrapolator;
+import org.lcsim.hps.recon.tracking.TrackUtils;
 import org.lcsim.util.Driver;
 import org.lcsim.util.aida.AIDA;
 import org.lcsim.recon.cluster.util.BasicCluster;
@@ -1453,7 +1455,7 @@
                 if(side==0) aida.histogram1D("Top track Chi2").fill(trk.getChi2());
                 else aida.histogram1D("Bottom track Chi2").fill(trk.getChi2()); 
 
-                Hep3Vector posAtEcal = SvtTrackExtrapolator.getTrackPositionAtEcal(trk);
+                Hep3Vector posAtEcal = TrackUtils.getTrackPositionAtEcal(trk);
 
 
                 aida.histogram2D("Track Pz vs X").fill(posAtEcal.y(),trk.getPX()*1000);
@@ -1472,7 +1474,7 @@
                 }
 
 
-                Hep3Vector posAtTarget = SvtTrackExtrapolator.extrapolateTrack(trk,-670.);
+                Hep3Vector posAtTarget = TrackUtils.extrapolateTrack(trk,-670.);
 
                 for(int imom=0;imom!=2;++imom) {
 
@@ -1483,10 +1485,10 @@
 
                     aida.histogram1D("Track " + str + "X @ -67cm").fill(posAtTarget.y());
                     aida.histogram1D("Track " + str + "Y @ -67cm").fill(posAtTarget.z());
-                    Hep3Vector extPosEntr = SvtTrackExtrapolator.extrapolateTrack(trk,-0.0001);
+                    Hep3Vector extPosEntr = TrackUtils.extrapolateTrack(trk,-0.0001);
                     aida.histogram1D("Track " + str + "X @ 0cm").fill(extPosEntr.y());
                     aida.histogram1D("Track " + str + "Y @ 0cm").fill(extPosEntr.z());
-                    Hep3Vector extPosColl = SvtTrackExtrapolator.extrapolateTrack(trk,-1500.0);
+                    Hep3Vector extPosColl = TrackUtils.extrapolateTrack(trk,-1500.0);
                     aida.histogram1D("Track " + str + "X @ -150cm").fill(extPosColl.y());
                     aida.histogram1D("Track " + str + "Y @ -150cm").fill(extPosColl.z());
     //              
@@ -1919,7 +1921,7 @@
                     
 
 
-                    Hep3Vector posAtTarget = SvtTrackExtrapolator.extrapolateTrack(trkMatchTool.getMatchedTrack(),-670);    
+                    Hep3Vector posAtTarget = TrackUtils.extrapolateTrack(trkMatchTool.getMatchedTrack(),-670);    
 
 
 

hps-java/src/main/java/org/lcsim/hps/users/phansson
ParticleHelixProducer.java 1.10 -> 1.11
diff -u -r1.10 -r1.11
--- ParticleHelixProducer.java	3 May 2013 23:18:56 -0000	1.10
+++ ParticleHelixProducer.java	14 Oct 2013 22:58:04 -0000	1.11
@@ -7,9 +7,11 @@
 import hep.physics.vec.Hep3Matrix;
 import hep.physics.vec.Hep3Vector;
 import hep.physics.vec.VecOp;
+
 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
+
 import org.lcsim.constants.Constants;
 import org.lcsim.event.EventHeader;
 import org.lcsim.event.MCParticle;
@@ -20,8 +22,6 @@
 import org.lcsim.geometry.Detector;
 import org.lcsim.hps.analysis.ecal.HPSMCParticlePlotsDriver;
 import org.lcsim.hps.recon.tracking.HPSTrack;
-import org.lcsim.hps.recon.tracking.SvtTrackExtrapolator;
-import org.lcsim.hps.recon.tracking.TrackUtils;
 import org.lcsim.hps.recon.tracking.TrackerHitUtils;
 import org.lcsim.recon.tracking.digitization.sisim.TrackerHitType;
 import org.lcsim.recon.tracking.digitization.sisim.TrackerHitType.CoordinateSystem;
@@ -42,10 +42,8 @@
     private boolean noTopTracks = true;
     private boolean noBottomTracks = false;
     private int _totalTracks = 0;
-    TrackUtils trackUtils = new TrackUtils();
     TrackerHitUtils trackerhitutils = new TrackerHitUtils();
     Hep3Matrix detToTrk;
-    SvtTrackExtrapolator extrapolator = new SvtTrackExtrapolator();
     Hep3Vector _bfield;
     TrackerHitType trackerType = new TrackerHitType(TrackerHitType.CoordinateSystem.GLOBAL, TrackerHitType.MeasurementType.STRIP_1D);
     CoordinateSystem coordinate_system = trackerType.getCoordinateSystem();

hps-java/src/main/java/org/lcsim/hps/users/phansson
TwoTrackAnlysis.java 1.23 -> 1.24
diff -u -r1.23 -r1.24
--- TwoTrackAnlysis.java	14 Oct 2013 22:03:10 -0000	1.23
+++ TwoTrackAnlysis.java	14 Oct 2013 22:58:04 -0000	1.24
@@ -547,7 +547,7 @@
                 }
                 
                 //Track at converter
-                Hep3Vector posAtConverter = SvtTrackExtrapolator.extrapolateTrack(trk1,BeamlineConstants.HARP_POSITION);
+                Hep3Vector posAtConverter = TrackUtils.extrapolateTrack(trk1,BeamlineConstants.HARP_POSITION);
                 if(posAtConverter!=null)  printWriter.format("%5.5f %5.5f ", posAtConverter.x(),posAtConverter.y()); //note rotation from JLab->tracking
                 else printWriter.format("%5.5f %5.5f ", -9999999.9,-9999999.9);
                 HPSTrack hpstrk1 = new HPSTrack(helix1);
@@ -555,14 +555,14 @@
                 if (posAtConverterFringe1!=null) printWriter.format("%5.5f %5.5f %5.5f ", posAtConverterFringe1.z(),posAtConverterFringe1.x(),posAtConverterFringe1.y()); //note rotation from JLab->tracking
                 else printWriter.format("%5.5f %5.5f %5.5f ", -9999999.9,-9999999.9,-9999999.9);
                 
-                Hep3Vector posAtNomTarget1 = SvtTrackExtrapolator.extrapolateTrack(trk1,0);
+                Hep3Vector posAtNomTarget1 = TrackUtils.extrapolateTrack(trk1,0);
                 if(posAtNomTarget1!=null) printWriter.format("%5.5f %5.5f ", posAtNomTarget1.x(),posAtNomTarget1.y()); //note rotation from JLab->tracking
                 else printWriter.format("%5.5f %5.5f ", -9999999.9,-9999999.9);
 
                 Hep3Vector posAtNomTargetFringe1 = hpstrk1.getPositionAtZMap(100., 0.0, 5.0)[0];
                 if (posAtNomTargetFringe1!=null) printWriter.format("%5.5f %5.5f %5.5f ", posAtNomTargetFringe1.z(),posAtNomTargetFringe1.x(),posAtNomTargetFringe1.y()); //note rotation from JLab->tracking
                 else printWriter.format("%5.5f %5.5f %5.5f ", -9999999.9,-9999999.9,-9999999.9);
-                Hep3Vector posAtECal = SvtTrackExtrapolator.extrapolateTrack(trk1,BeamlineConstants.ECAL_FACE);        
+                Hep3Vector posAtECal = TrackUtils.extrapolateTrack(trk1,BeamlineConstants.ECAL_FACE);        
                 if(posAtECal!=null && !Double.isNaN(posAtECal.x()) && !Double.isNaN(posAtECal.y())) {
                         printWriter.format("%5.5f %5.5f ",posAtECal.x(),posAtECal.y()); //note rotation from JLab->tracking
                 } 
@@ -1011,7 +1011,7 @@
             if(useFringe) {
                 pos1 = hpstrk1.getPositionAtZMap(100.0, zVal, 5.0)[0];
             } else {
-                pos1 = SvtTrackExtrapolator.extrapolateTrack(trk1,zVal);
+                pos1 = TrackUtils.extrapolateTrack(trk1,zVal);
             }
             //System.out.printf("%s: Position1 at edge of fringe %s\n",this.getClass().getSimpleName(),pos1.toString());
             Helix traj = (Helix)hpstrk1.getTrajectory();
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