Fix a bug in TPC_ModularEndcap_o1_v01.cpp when constructing Al frame position at the TPC endcap

Detector/DetCRD/compact/TDR_o1_v01/TDR_o1_v01-onlyTracker.xml

@@ -29,16 +29,15 @@
   <!--TODO: vertex cooling-->
   <!--include ref="../CRD_common_v02/Beampipe_v01_03.xml"/-->
   <!--preliminary vertex and tracker, to update/-->
-  <!--include ref="../CRD_common_v02/VXD_StaggeredLadder_v02_01.xml"/>
+  <include ref="../CRD_common_v02/VXD_StaggeredLadder_v02_01.xml"/>
   <include ref="../CRD_common_v02/FTD_SkewRing_v01_05.xml"/>
   <include ref="../CRD_common_v02/SIT_SimplePixel_v01_03.xml"/>
-  <include ref="../CRD_common_v01/TPC_Simple_v10_02.xml"/>
-  <include ref="../CRD_common_v01/SET_SimplePixel_v01_01.xml"/-->
-  <include ref="./TPC_ModularEndcap_TDR_o1_v01.xml"/>
+  <!--include ref="../CRD_common_v01/TPC_Simple_v10_02.xml"/-->
+  <include ref="../CRD_common_v01/SET_SimplePixel_v01_01.xml"/>
   
   <!--prepare for update, need check first-->
-  <!--include ref="../CRD_common_v02/TPC_ModularEndcap_o1_v01.xml"/-->
-  <include ref="../CRD_common_v01/SET_SimplePixel_v01_01.xml"/>
+  <include ref="../CRD_common_v02/TPC_ModularEndcap_o1_v01.xml"/>
+  <!--include ref="../CRD_common_v01/SET_SimplePixel_v01_01.xml"/-->
 
   <fields>
     <field name="InnerSolenoid" type="solenoid"

Detector/DetCRD/src/Tracker/TPC_ModularEndcap_o1_v01.cpp

@@ -371,7 +371,7 @@ static Ref_t create_element(Detector& theDetector, xml_h e, SensitiveDetector se
                     double phi_end   = 2*M_PI;
                     Tube   ringSolid(rCursor, r_end, dz_Alframe/2., phi_start,  phi_end) ;
                     Volume ringLog( layerName+"Log", ringSolid, materialAlframe) ;
-                    pv = endcapLog.placeVolume( ringLog, Position(0., 0., -dz_Endpaltelength/2. + dz_Alframe) ) ;
+                    pv = endcapLog.placeVolume( ringLog, Position(0., 0., -dz_Endpaltelength/2. + dz_Alframe/2.) ) ;
                     tpc.setVisAttributes(theDetector,"GrayVis",ringLog);
                 }
                 if(layerType == "Module")