Line Code
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<?xml version="1.0"?>
<DDDefinition xmlns="http://www.cern.ch/cms/DDL" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.cern.ch/cms/DDL ../../../DetectorDescription/Schema/DDLSchema.xsd">
	<ConstantsSection label="tidb.xml" eval="true">
		<Constant name="zero" value="0.0*fm"/>
	</ConstantsSection>
	<LogicalPartSection label="tidb.xml">
		<LogicalPart name="TIDB" category="unspecified">
			<rSolid name="tid:TID"/>
			<rMaterial name="materials:Air"/>
		</LogicalPart>
		<LogicalPart name="TIDWheelB" category="unspecified">
			<rSolid name="tid:TIDWheel"/>
			<rMaterial name="materials:Air"/>
		</LogicalPart>
	</LogicalPartSection>
	<PosPartSection label="tidb.xml">
		<PosPart copyNumber="1">
			<rParent name="tidb:TIDB"/>
			<rChild name="tidb:TIDWheelB"/>
			<Translation x="[zero]" y="[zero]" z="[tid:Wheel0Z]"/>
		</PosPart>
		<PosPart copyNumber="2">
			<rParent name="tidb:TIDB"/>
			<rChild name="tidb:TIDWheelB"/>
			<Translation x="[zero]" y="[zero]" z="[tid:Wheel1Z]"/>
		</PosPart>
		<PosPart copyNumber="3">
			<rParent name="tidb:TIDB"/>
			<rChild name="tidb:TIDWheelB"/>
			<Translation x="[zero]" y="[zero]" z="[tid:Wheel2Z]"/>
		</PosPart>
		<PosPart copyNumber="1">
			<rParent name="tidb:TIDWheelB"/>
			<rChild name="tidring0b:TIDRing0B"/>
		</PosPart>
		<PosPart copyNumber="2">
			<rParent name="tidb:TIDWheelB"/>
			<rChild name="tidring1b:TIDRing1B"/>
			<Translation x="[zero]" y="[zero]" z="[tid:RingZ]"/>
		</PosPart>
		<PosPart copyNumber="3">
			<rParent name="tidb:TIDWheelB"/>
			<rChild name="tidring2:TIDRing2"/>
			<Translation x="[zero]" y="[zero]" z="-[tid:RingZ]"/>
		</PosPart>
		<PosPart copyNumber="1">
			<rParent name="tidb:TIDB"/>
			<rChild name="tid:TIDSupport"/>
			<Translation x="[zero]" y="[zero]" z="[tid:SupportZ]"/>
		</PosPart>
		<PosPart copyNumber="1">
			<rParent name="tidb:TIDB"/>
			<rChild name="tid:TIDSideDisk"/>
			<Translation x="[zero]" y="[zero]" z="[tid:SideDiskZ]"/>
		</PosPart>
	</PosPartSection>
	<Algorithm name="track:DDTrackerAngular">
		<rParent name="tidring0b:TIDRing0B"/>
		<String name="ChildName" value="tid:TIDWheelFixCutted"/>
		<Numeric name="N" value="3"/>
		<Numeric name="StartCopyNo" value="1"/>
		<Numeric name="IncrCopyNo" value="1"/>
		<Numeric name="RangeAngle" value="360*deg"/>
		<Numeric name="StartAngle" value="[tid:WheelFixPhi]"/>
		<Numeric name="Radius" value="0"/>
		<Vector name="Center" type="numeric" nEntries="3"> 
			[zero], [zero], -([tidringpar:StructureT]+[tid:WheelFixDZ])/2
		</Vector>
	</Algorithm>
</DDDefinition>