fix null issue for finalSV in KF for new HB tracking (#1164)

tongtongcao · web-flow · commit a7afa469abc1 · 2026-03-24T14:25:04.000-04:00
diff --git a/reconstruction/dc/src/main/java/org/jlab/rec/dc/track/TrackCandListFinder.java b/reconstruction/dc/src/main/java/org/jlab/rec/dc/track/TrackCandListFinder.java
@@ -294,6 +294,8 @@ public List<Track> getTrackCandsAI(CrossList crossList, DCGeant4Factory DcDetect
                 
                 if(cand.get_Vtx0() != null){
                     Point3D VTCS = cand.get(cand.size()-1).getCoordsInTiltedSector(cand.get_Vtx0().x(), cand.get_Vtx0().y(), cand.get_Vtx0().z());
+                    finalSV.k = measSurfaces.size()-1;
+                    kFZRef.finalStateVec = finalSV;                    
                     double deltaPathToVtx =  kFZRef.getDeltaPathToVtx(sector, VTCS.z());
 
                     List<org.jlab.rec.dc.trajectory.StateVec> kfStateVecsAlongTrajectory = setKFStateVecsAlongTrajectory(kFZRef, deltaPathToVtx);
