Geom: switch endcap-Itk from skew petal to non-skew

Detector/DetCRD/compact/CRD_common_v02/FTD_SkewRing_v01_05.xml

@@ -18,22 +18,22 @@
       <reconstruction strip_width="0.05*mm" strip_length="92*mm" strip_pitch="0" strip_angle="0"/>
 
       <layer id="0" z="SiTracker_endcap_z1" dz="0.5*ModuleZGap" inner_r="SiTracker_endcap_z1*tan(acos(Global_endcap_costheta))*cos(pi/FTDPetalNumber)" outer_r="SiTracker_endcap_outer_radius1"
-	     skew="acos(Global_endcap_costheta)" phi0="0" gap="ModuleRPhiGap" is_pixel="true" nmodules="FTDPetalNumber" vis="SeeThrough">
+	     skew="0" phi0="0" gap="ModuleRPhiGap" is_pixel="true" nmodules="FTDPetalNumber" vis="SeeThrough">
 	<component material="G4_Si"       thickness="SiliconThickness" vis="FTDSensitiveVis" sensitive="yes"/>
 	<component material="Carbon" thickness="SupportThickness" vis="FTDSupportVis"/>
       </layer>
       <layer id="1" z="SiTracker_endcap_z2" dz="0.5*ModuleZGap" inner_r="SiTracker_endcap_z2*tan(acos(Global_endcap_costheta))*cos(pi/FTDPetalNumber)" outer_r="SiTracker_endcap_outer_radius2"
-	     skew="acos(Global_endcap_costheta)" phi0="0" gap="ModuleRPhiGap" is_pixel="true" nmodules="FTDPetalNumber" vis="SeeThrough">
+	     skew="0" phi0="0" gap="ModuleRPhiGap" is_pixel="true" nmodules="FTDPetalNumber" vis="SeeThrough">
         <component material="G4_Si"       thickness="SiliconThickness" vis="FTDSensitiveVis" sensitive="yes"/>
         <component material="Carbon" thickness="SupportThickness" vis="FTDSupportVis"/>
       </layer>
       <layer id="2" z="SiTracker_endcap_z3" dz="0.5*ModuleZGap" inner_r="SiTracker_endcap_z3*tan(acos(Global_endcap_costheta))*cos(pi/FTDPetalNumber)" outer_r="SiTracker_endcap_outer_radius3"
-	     skew="acos(Global_endcap_costheta)" phi0="0" gap="ModuleRPhiGap" is_pixel="true" nmodules="FTDPetalNumber" vis="SeeThrough">
+	     skew="0" phi0="0" gap="ModuleRPhiGap" is_pixel="true" nmodules="FTDPetalNumber" vis="SeeThrough">
         <component material="G4_Si"       thickness="SiliconThickness" vis="FTDSensitiveVis" sensitive="yes"/>
         <component material="Carbon" thickness="SupportThickness" vis="FTDSupportVis"/>
       </layer>
       <layer id="3" z="SiTracker_endcap_z4" dz="0.5*ModuleZGap" inner_r="SiTracker_endcap_z4*tan(acos(Global_endcap_costheta))*cos(pi/FTDPetalNumber)" outer_r="SiTracker_endcap_outer_radius4"
-	     skew="acos(Global_endcap_costheta)" phi0="0" gap="ModuleRPhiGap" is_pixel="true" nmodules="FTDPetalNumber" vis="SeeThrough">
+	     skew="0" phi0="0" gap="ModuleRPhiGap" is_pixel="true" nmodules="FTDPetalNumber" vis="SeeThrough">
         <component material="G4_Si"       thickness="SiliconThickness" vis="FTDSensitiveVis" sensitive="yes"/>
         <component material="Carbon" thickness="SupportThickness" vis="FTDSupportVis"/>
       </layer>

Detector/DetCRD/compact/TDR_o1_v01/TDR_Dimensions_v01_01.xml

@@ -123,16 +123,11 @@
     <constant name="SiTracker_endcap_gas_zgap"    value="2*mm"/>
     <constant name="SiTracker_endcap_gas_rgap"    value="20*mm"/>
     <constant name="SiTracker_endcap_z1" value="Vertex_half_length"/>
-    <constant name="SiTracker_endcap_z2" value="SIT3_half_length/SiTracker_region1_costheta
-						*cos(acos(SiTracker_region1_costheta)-acos(Global_endcap_costheta))*Global_endcap_costheta"/>
-    <constant name="SiTracker_endcap_z3" value="TPC_inner_radius/sin(acos(SiTracker_region2_costheta))
-						*cos(acos(SiTracker_region2_costheta)-acos(Global_endcap_costheta))*Global_endcap_costheta"/>
-    <constant name="SiTracker_endcap_z4" value="TPC_inner_radius/sin(acos(SiTracker_region3_costheta))
-                                                *cos(acos(SiTracker_region3_costheta)-acos(Global_endcap_costheta))*Global_endcap_costheta"/>
+    <constant name="SiTracker_endcap_z2" value="SIT3_half_length+SiTracker_endcap_barrel_zgap"/>
+    <constant name="SiTracker_endcap_z3" value="TPC_inner_radius/tan(acos(SiTracker_region2_costheta))"/>
+    <constant name="SiTracker_endcap_z4" value="TPC_inner_radius/tan(acos(SiTracker_region3_costheta))"/>
     <constant name="SiTracker_endcap_z5" value="TPC_half_length+SiTracker_endcap_gas_zgap"/>
-    <constant name="SiTracker_endcap_outer_radius1" value="SiTracker_endcap_z1/Global_endcap_costheta
-							   /cos(acos(SiTracker_region1_costheta)-acos(Global_endcap_costheta))
-							   *sin(acos(SiTracker_region1_costheta))"/>
+    <constant name="SiTracker_endcap_outer_radius1" value="SiTracker_endcap_z1*tan(acos(SiTracker_region1_costheta))"/>
     <constant name="SiTracker_endcap_outer_radius2" value="SIT3_inner_radius"/>
     <constant name="SiTracker_endcap_outer_radius3" value="TPC_inner_radius-SiTracker_endcap_gas_rgap"/>
     <constant name="SiTracker_endcap_outer_radius4" value="TPC_inner_radius-SiTracker_endcap_gas_rgap"/>