modified: src/ref_DiskTracker_geo.cpp

src/ref_DiskTracker_geo.cpp

@@ -73,9 +73,10 @@ static Ref_t create_detector(Detector& description, xml_h e, SensitiveDetector s
       DetElement layer(sdet, l_nam + "_neg", l_num);
       pv = assembly.placeVolume(l_vol,Transform3D(RotationY(M_PI),Position(0,0,-zmin-layerWidth/2)));
       pv.addPhysVolID("layer",l_num);
-      pv.addPhysVolID("barrel",2);
+      pv.addPhysVolID("barrel",1);
+      layer.setPlacement(pv);
       // DetElement layerR = layer.clone(l_nam+"_neg");
-      sdet.add(layer.setPlacement(pv));
+      // sdet.add(layerR.setPlacement(pv));
     }
   }
   if ( x_det.hasAttr(_U(combineHits)) ) {