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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="bhm.xml" eval="true">
<Constant name="bhmZ" value="20.625*m"/>
<Constant name="onehalfmm" value="0.05*cm"/>
<Constant name="quartzLength" value="10*cm"/>
<Constant name="quartzRadius" value="2.55*cm"/>
<Constant name="pmtRadius" value="2.55*cm"/>
<Constant name="windowThickness" value="0.7*cm"/>
<Constant name="windowminThickness" value="0.1*cm"/>
<Constant name="windowRadius" value="2.5*cm"/>
<Constant name="cathodeRadius" value="2.3*cm"/>
<Constant name="cathodeThickness" value="0.1*cm"/>
<Constant name="cathodeminThickness" value="0.1045*cm"/>
<Constant name="cathodeSlope" value="[cathodeRadius]/[windowThickness]"/>
<Constant name="cathodeR1" value="[cathodeSlope]*[cathodeminThickness]"/>
<Constant name="cathodeR2" value="[cathodeSlope]*([windowThickness]-[cathodeminThickness])"/>
<Constant name="stopper1Thickness" value="0.1*cm"/>
<Constant name="stopper2Thickness" value="0.1*cm"/>
<Constant name="shieldRadius" value="2.6*cm"/>
<Constant name="shieldThickness" value="1.0*cm"/>
<Constant name="shieldLength" value="16.*cm"/>
<Constant name="diskRadius" value="2.55*cm"/>
<Constant name="diskThickness" value="0.6*cm"/>
<Constant name="quartzHalfL" value="[quartzLength]/2"/>
<Constant name="shieldHalfL" value="[shieldLength]/2"/>
<Constant name="airGap" value="0.0*cm"/>
<Constant name="diskPos" value="([airGap]+[quartzHalfL]+[diskThickness]/2)"/>
<Constant name="pmtPos" value="([diskPos]+[diskThickness]/2)"/>
<Constant name="cathodePos" value="([pmtPos]+[windowminThickness])"/>
<Constant name="stopper1Pos" value="([cathodePos]+[cathodeminThickness])"/>
<Constant name="shieldBackPos" value="([shieldHalfL]+[shieldThickness]/2)"/>
<Constant name="stopper2Pos" value="(-[quartzHalfL]-[stopper2Thickness]/2)"/>
<Constant name="shieldFrontPos" value="(-[shieldHalfL]-[shieldThickness]/2)"/>
</ConstantsSection>
<SolidSection label="bhm.xml">
<Tubs name="BHM" rMin="180.0*cm" rMax="188.0*cm" dz="9.0*cm" startPhi="0*deg" deltaPhi="360*deg"/>
<Tubs name="BHMDriver" rMin="0.0*fm" rMax="4.0*cm" dz="9.0*cm" startPhi="0*deg" deltaPhi="360*deg"/>
<Polycone name="BHMStopper1" startPhi="0*deg" deltaPhi="360*deg">
<ZSection z="0.0*cm" rMin="0.0*cm" rMax="0.0*cm"/>
<ZSection z="0.5955*cm" rMin="0.0*cm" rMax="1.9565*cm"/>
<ZSection z="0.5955*cm" rMin="0.0*cm" rMax="2.50*cm"/>
<ZSection z="0.7*cm" rMin="0.0*cm" rMax="2.50*cm"/>
</Polycone>
<Tubs name="BHMTarget" rMin="0.0*fm" rMax="[quartzRadius]" dz="[quartzHalfL]" startPhi="0*deg" deltaPhi="360*deg"/>
<Tubs name="BHMDisk" rMin="0.0*fm" rMax="[diskRadius]" dz="[diskThickness]/2" startPhi="0*deg" deltaPhi="360*deg"/>
<Polycone name="BHMWindow" startPhi="0*deg" deltaPhi="360*deg">
<ZSection z="0.0*cm" rMin="0.0*cm" rMax="[windowRadius]"/>
<ZSection z="[windowminThickness]" rMin="0.0*cm" rMax="[windowRadius]"/>
<ZSection z="[windowThickness]+[windowminThickness]" rMin="[cathodeRadius]" rMax="2.5*cm"/>
</Polycone>
<Polycone name="BHMCathode" startPhi="0*deg" deltaPhi="360*deg">
<ZSection z="0.0*cm" rMin="0.0*cm" rMax="0.0*cm"/>
<ZSection z="[cathodeminThickness]" rMin="0.0*cm" rMax="[cathodeR1]"/>
<ZSection z="[windowThickness]" rMin="[cathodeR2]" rMax="[cathodeRadius]"/>
</Polycone>
<Tubs name="BHMStopper2" rMin="0.0*fm" rMax="[quartzRadius]" dz="[onehalfmm]" startPhi="0*deg" deltaPhi="360*deg"/>
<Tubs name="BHMShielding" rMin="[shieldRadius]" rMax="[shieldRadius]+[shieldThickness]" dz="[shieldHalfL]" startPhi="0*deg" deltaPhi="360*deg"/>
<Tubs name="BHMShieldingFace" rMin="0.0*fm" rMax="[shieldRadius]+[shieldThickness]" dz="[shieldThickness]/2" startPhi="0*deg" deltaPhi="360*deg"/>
</SolidSection>
<LogicalPartSection label="bhm.xml">
<LogicalPart name="BHM" category="unspecified">
<rSolid name="BHM"/>
<rMaterial name="materials:Air"/>
</LogicalPart>
<LogicalPart name="BHMDriver" category="unspecified">
<rSolid name="BHMDriver"/>
<rMaterial name="materials:Air"/>
</LogicalPart>
<LogicalPart name="BHMStopper1" category="unspecified">
<rSolid name="BHMStopper1"/>
<rMaterial name="materials:Air"/>
</LogicalPart>
<LogicalPart name="BHMTarget" category="unspecified">
<rSolid name="BHMTarget"/>
<rMaterial name="materials:Quartz"/>
</LogicalPart>
<LogicalPart name="BHMDisk" category="unspecified">
<rSolid name="BHMDisk"/>
<rMaterial name="materials:RTV"/>
</LogicalPart>
<LogicalPart name="BHMWindow" category="unspecified">
<rSolid name="BHMWindow"/>
<rMaterial name="materials:Quartz"/>
</LogicalPart>
<LogicalPart name="BHMCathode" category="unspecified">
<rSolid name="BHMCathode"/>
<rMaterial name="materials:Bialkali"/>
</LogicalPart>
<LogicalPart name="BHMStopper2" category="unspecified">
<rSolid name="BHMStopper2"/>
<rMaterial name="materials:Air"/>
</LogicalPart>
<LogicalPart name="BHMShielding" category="unspecified">
<rSolid name="BHMShielding"/>
<rMaterial name="materials:Aluminium"/>
</LogicalPart>
<LogicalPart name="BHMShieldingFace" category="unspecified">
<rSolid name="BHMShieldingFace"/>
<rMaterial name="materials:Aluminium"/>
</LogicalPart>
</LogicalPartSection>
<PosPartSection label="bhm.xml">
<PosPart copyNumber="1">
<rParent name="forwardshield:OQUA"/>
<rChild name="bhm:BHM"/>
<rRotation name="rotations:000D"/>
<Translation x="0*fm" y="0*fm" z="[bhmZ]"/>
</PosPart>
<PosPart copyNumber="1">
<rParent name="bhm:BHMDriver"/>
<rChild name="bhm:BHMStopper1"/>
<rRotation name="rotations:000D"/>
<Translation x="0*fm" y="0*fm" z="[stopper1Pos]"/>
</PosPart>
<PosPart copyNumber="2">
<rParent name="bhm:BHMDriver"/>
<rChild name="bhm:BHMTarget"/>
<rRotation name="rotations:000D"/>
</PosPart>
<PosPart copyNumber="1">
<rParent name="bhm:BHMDriver"/>
<rChild name="bhm:BHMDisk"/>
<rRotation name="rotations:000D"/>
<Translation x="0*fm" y="0*fm" z="[diskPos]"/>
</PosPart>
<PosPart copyNumber="1">
<rParent name="bhm:BHMDriver"/>
<rChild name="bhm:BHMWindow"/>
<rRotation name="rotations:000D"/>
<Translation x="0*fm" y="0*fm" z="[pmtPos]"/>
</PosPart>
<PosPart copyNumber="1">
<rParent name="bhm:BHMDriver"/>
<rChild name="bhm:BHMCathode"/>
<rRotation name="rotations:000D"/>
<Translation x="0*fm" y="0*fm" z="[cathodePos]"/>
</PosPart>
<PosPart copyNumber="1">
<rParent name="bhm:BHMDriver"/>
<rChild name="bhm:BHMStopper2"/>
<rRotation name="rotations:000D"/>
<Translation x="0*fm" y="0*fm" z="[stopper2Pos]"/>
</PosPart>
<PosPart copyNumber="1">
<rParent name="bhm:BHMDriver"/>
<rChild name="bhm:BHMShielding"/>
<rRotation name="rotations:000D"/>
</PosPart>
<PosPart copyNumber="1">
<rParent name="bhm:BHMDriver"/>
<rChild name="bhm:BHMShieldingFace"/>
<rRotation name="rotations:000D"/>
<Translation x="0*fm" y="0*fm" z="[shieldBackPos]"/>
</PosPart>
<PosPart copyNumber="2">
<rParent name="bhm:BHMDriver"/>
<rChild name="bhm:BHMShieldingFace"/>
<rRotation name="rotations:000D"/>
<Translation x="0*fm" y="0*fm" z="[shieldFrontPos]"/>
</PosPart>
<Algorithm name="bhmalgo:DDBHMAngular">
<rParent name="bhm:BHM"/>
<String name="ChildName" value="bhm:BHMDriver"/>
<String name="Rotation" value="rotations:180D"/>
<Numeric name="number" value="20"/>
<Numeric name="radius" value="184*cm"/>
<Numeric name="deltaPhi" value="180*deg/16"/>
</Algorithm>
</PosPartSection>
</DDDefinition>
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