- made the SiBarrelTracker ("SIT") a strip detector

  -> creating 1D hits

examples/SimpleDetector/compact/Simple_CLIC.xml

@@ -64,12 +64,10 @@
 
       <detector name="VXD" type="ZPlanarTracker" vis="VXDVis" id="1" limits="Tracker_limits" readout="VXDCollection" insideTrackingVolume="true">
         <layer nLadders="10" phi0="-1.570796327e+00*rad" id="0">
-          <!-- <ladder distance="1.600000000e+01*mm" thickness="1.000000000e+00*mm" width="1.050000000e+01*mm" length="6.250000000e+01*mm" offset="-3.406041308e+00*mm"    material="Lead" /> -->
           <ladder distance="1.600000000e+01*mm" thickness="1.000000000e+00*mm" width="1.050000000e+01*mm" length="6.250000000e+01*mm" offset="-3.406041308e+00*mm"    material="CarbonFiber" />
           <sensitive distance="1.595000000e+01*mm" thickness="5.000000000e-02*mm" width="1.100000000e+01*mm" length="6.250000000e+01*mm" offset="-3.156041308e+00*mm" material="G4_Si"/>
         </layer>
         <layer nLadders="10" phi0="-1.570796327e+00*rad" id="1">
-          <!-- <ladder distance="1.700000000e+01*mm" thickness="1.000000000e+00*mm" width="1.0500000000e+01*mm" length="6.250000000e+01*mm" offset="-3.406041308e+00*mm"    material="Lead" /> -->
           <ladder distance="1.700000000e+01*mm" thickness="1.000000000e+00*mm" width="1.0500000000e+01*mm" length="6.250000000e+01*mm" offset="-3.406041308e+00*mm"    material="CarbonFiber" />
           <sensitive distance="1.800000000e+01*mm" thickness="5.000000000e-02*mm" width="1.100000000e+01*mm" length="6.250000000e+01*mm" offset="-3.156041308e+00*mm" material="G4_Si"/>
         </layer>
@@ -91,7 +89,7 @@
         </layer>
       </detector>
 
-      <detector name="SIT" type="ZPlanarTracker" vis="SITVis" id="2" limits="Tracker_limits" readout="SITCollection" insideTrackingVolume="true">
+      <detector name="SIT" type="ZPlanarTracker" vis="SITVis" id="2" limits="Tracker_limits" readout="SITCollection" insideTrackingVolume="true" isStripDetector="true" >
       	<layer nLadders="14" phi0="0.0" id="0">
       	  <ladder distance="228.975*mm" thickness="1.0*mm" width="104.524099097*mm" length="430.0*mm" offset="0.0*mm" material="CarbonFiber" />
       	  <sensitive distance="229.975*mm" thickness="0.05*mm" width="104.980586046*mm" length="430.0*mm" offset="0.0*mm" material="G4_Si"/>

examples/SimpleDetector/src/ZPlanarTracker_geo.cpp

@@ -12,7 +12,7 @@
 
 #include "DDRec/Surface.h"
 #include "DDRec/DetectorData.h"
-
+#include <exception>
 
 using namespace DD4hep;
 using namespace DD4hep::Geometry;
@@ -39,6 +39,13 @@ static Ref_t create_element(LCDD& lcdd, xml_h e, SensitiveDetector sens)  {
   double minRadius = 1e99 ;
   double minZhalf = 1e99 ;
 
+
+  bool isStripDetector = false ;
+  try {
+    isStripDetector = x_det.attr<bool>( "isStripDetector" ) ;
+
+  } catch(std::runtime_error ){}
+
   //=========  loop over layer elements in xml  ======================================
 
   for(xml_coll_t c(e, _U(layer) ); c; ++c)  {
@@ -146,7 +153,12 @@ static Ref_t create_element(LCDD& lcdd, xml_h e, SensitiveDetector sens)  {
     double inner_thickness = ( sens_distance > supp_distance ?  ( sens_distance - supp_distance ) + sens_thickness/2  : sens_thickness/2 ) ;
     double outer_thickness = ( sens_distance > supp_distance ?    sens_thickness/2  :  ( supp_distance - sens_distance ) + supp_thickness - sens_thickness/2   ) ;
     
-    VolPlane surf( sens_vol , SurfaceType(SurfaceType::Sensitive) , inner_thickness , outer_thickness , u,v,n ) ; //,o ) ;
+    SurfaceType type( SurfaceType::Sensitive ) ;
+
+    if( isStripDetector ) 
+      type.setProperty( SurfaceType::Measurement1D , true ) ;
+
+    VolPlane surf( sens_vol , type , inner_thickness , outer_thickness , u,v,n ) ; //,o ) ;
 
     //--------------------------------------------