Change the booleanshape of the drift chamber

Detector/DetDriftChamber/compact/det.xml

@@ -38,6 +38,9 @@
 
     <constant name="DC_safe_distance" value="0.2*mm"/>
 
+    <constant name="SDT_inner_wall_thickness" value="0.2*mm"/>
+    <constant name="SDT_outer_wall_thickness" value="2.8*mm"/>
+
     <constant name="DC_inner_chamber_layer_rbegin" value="235*mm"/>
     <constant name="DC_inner_chamber_layer_rend" value="905*mm"/>
 
@@ -51,7 +54,7 @@
     <constant name="DC_outer_chamber_radius_max" value="1716*mm"/>
 
     <constant name="SDT_inner_chamber_radius_min" value="DC_inner_chamber_layer_rbegin-DC_safe_distance"/>
-    <constant name="SDT_inner_chamber_radius_max" value="DC_inner_chamber_radius_max"/>
+    <constant name="SDT_inner_chamber_radius_max" value="DC_inner_chamber_radius_max-SDT_outer_wall_thickness"/>
     <constant name="SDT_inner_chamber_half_length" value="DC_half_length"/>
 
     <constant name="SDT_outer_chamber_radius_min" value="DC_outer_chamber_layer_rbegin-DC_safe_distance"/>
@@ -63,9 +66,6 @@
     <constant name="SDT_chamber_layer_width" value="10*mm"/>
     <constant name="Epsilon" value="0*deg"/>
 
-    <constant name="SDT_inner_wall_thickness" value="0.2*mm"/>
-    <constant name="SDT_outer_wall_thickness" value="2.8*mm"/>
-
     <constant name="SDT_inner_chamber_inner_wall_radius_min" value="SDT_inner_chamber_radius_min-SDT_inner_wall_thickness"/>
     <constant name="SDT_inner_chamber_inner_wall_radius_max" value="SDT_inner_chamber_radius_min"/>
     <constant name="SDT_inner_chamber_outer_wall_radius_min" value="SDT_inner_chamber_radius_max"/>
@@ -106,9 +106,13 @@
   <detectors>
     <detector id="7" name="DriftChamber" type="DriftChamber" readout="DriftChamberHitsCollection" vis="VisibleBlue" sensitive="true" region="DriftChamberRegion" limits="DC_limits">
       <envelope vis="SeeThrough">
-        <shape type="BooleanShape" operation="Union" material="Air">
+<!--        <shape type="BooleanShape" operation="Union" material="Air">
           <shape type="Tube" rmin="SDT_radius_min" rmax="SDT_inner_chamber_outer_wall_radius_max" dz="SDT_half_length" />
           <shape type="Tube" rmin="SDT_outer_chamber_inner_wall_radius_min" rmax="SDT_radius_max" dz="SDT_half_length" />
+        </shape> -->
+        <shape type="BooleanShape" operation="Subtraction" material="Air">
+          <shape type="Tube" rmin="SDT_radius_min" rmax="SDT_radius_max" dz="SDT_half_length" />
+          <shape type="Tube" rmin="DC_inner_chamber_radius_max" rmax="SDT_outer_chamber_inner_wall_radius_min" dz="DC_half_length"/>
         </shape>
       </envelope>