Merge pull request #43361 from bsunanda/Run3-hcx358

Run3-hcx358 First version of the ZDC simulation geometry which can work for the Run3 geometry

Geometry/ForwardCommonData/data/cms.xml

@@ -0,0 +1,38 @@
+<?xml version="1.0"?>
+<DDDefinition>
+
+  <SolidSection label="cms.xml">
+    <Polycone name="CMSE" startPhi="0*deg" deltaPhi="360*deg">
+      <ZSection z="-100.0*cm" rMin="0.0*mm" rMax="100.0*cm"/>
+      <ZSection z="100.0*cm" rMin="0.0*mm" rMax="100.0*cm"/>
+    </Polycone>
+  </SolidSection>
+
+  <LogicalPartSection label="cms.xml">
+    <LogicalPart name="World" category="unspecified">
+      <rSolid name="CMSE"/>
+      <rMaterial name="materials:Air"/>
+    </LogicalPart>
+    <LogicalPart name="OCMS" category="unspecified">
+      <rSolid name="CMSE"/>
+      <rMaterial name="materials:Air"/>
+    </LogicalPart>
+    <LogicalPart name="CMSE" category="unspecified">
+      <rSolid name="CMSE"/>
+      <rMaterial name="materials:Air"/>
+    </LogicalPart>
+  </LogicalPartSection>
+
+  <PosPartSection label="cmsr.xml">
+    <PosPart copyNumber="1">
+      <rParent name="cms:World"/>
+      <rChild name="cms:OCMS"/>
+    </PosPart>
+    <PosPart copyNumber="1">
+      <rParent name="cms:OCMS"/>
+      <rChild name="cms:CMSE"/>
+      <rRotation name="rotations:000D"/>
+    </PosPart>
+  </PosPartSection>
+</DDDefinition>
+

Geometry/ForwardCommonData/data/cmszdcTest.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0"?>
+<DDDefinition>
+  <ConstantsSection label="cmszdcConstant" eval="true">
+    <Constant name="zposition" value="0.0*m"/>
+  </ConstantsSection>
+  <PosPartSection label="cmszdcPosPart">
+    <PosPart copyNumber="1">
+      <rParent name="cms:CMSE"/>
+      <rChild name="zdc:ZDC"/>
+      <Translation x="0*fm" y="0*fm" z="[zposition]"/>
+    </PosPart>
+  </PosPartSection>
+</DDDefinition>