materials.xml

<?xml version="1.0" encoding="UTF-8"?>
<materials>

  <!--
       Air by weight from

       http://www.engineeringtoolbox.com/air-composition-24_212.html
  -->
  <material name="Air">
    <D type="density" unit="g/cm3" value="0.0012"/>
    <fraction n="0.754" ref="N"/>
    <fraction n="0.234" ref="O"/>
    <fraction n="0.012" ref="Ar"/>
  </material>
  
  <!-- We model vakuum just as very thin air -->
  <material name="Vacuum">  
    <D type="density" unit="g/cm3" value="0.0000000001" />
    <fraction n="0.754" ref="N"/>
    <fraction n="0.234" ref="O"/>
    <fraction n="0.012" ref="Ar"/>
  </material>

  <material name="Epoxy">
    <D type="density" value="1.3" unit="g/cm3"/>
    <composite n="44" ref="H"/>
    <composite n="15" ref="C"/>
    <composite n="7" ref="O"/>
  </material>

  <material name="Quartz">
    <D type="density" value="2.2" unit="g/cm3"/>
    <composite n="1" ref="Si"/>
    <composite n="2" ref="O"/>
  </material>

  <material name="G10">
    <D type="density" value="1.7" unit="g/cm3"/>
    <fraction n="0.08" ref="Cl"/>
    <fraction n="0.773" ref="Quartz"/>
    <fraction n="0.147" ref="Epoxy"/>
  </material>

  <material name="Polystyrene">
    <D value="1.032" unit="g/cm3"/>
    <composite n="19" ref="C"/>
    <composite n="21" ref="H"/>
  </material>

  <material name="Steel235">
    <D value="7.85" unit="g/cm3"/>
    <fraction n="0.998" ref="Fe"/>
    <fraction n=".002" ref="C"/>
  </material>

  <material name="SiliconOxide">
    <D type="density" value="2.65" unit="g/cm3"/>
    <composite n="1" ref="Si"/>
    <composite n="2" ref="O"/>
  </material>

  <material name="BoronOxide">
    <D type="density" value="2.46" unit="g/cm3"/>
    <composite n="2" ref="B"/>
    <composite n="3" ref="O"/>
  </material>

  <material name="SodiumOxide">
    <D type="density" value="2.65" unit="g/cm3"/>
    <composite n="2" ref="Na"/>
    <composite n="1" ref="O"/>
  </material>

  <material name="AluminumOxide">
    <D type="density" value="3.89" unit="g/cm3"/>
    <composite n="2" ref="Al"/>
    <composite n="3" ref="O"/>
  </material>

  <material name="PyrexGlass">
    <D type="density" value="2.23" unit="g/cm3"/>
    <fraction n="0.806" ref="SiliconOxide"/>
    <fraction n="0.130" ref="BoronOxide"/>
    <fraction n="0.040" ref="SodiumOxide"/>
    <fraction n="0.023" ref="AluminumOxide"/>
  </material>

  <material name="CarbonFiber">
    <D type="density" value="1.5" unit="g/cm3"/>
    <fraction n="0.65" ref="C"/>
    <fraction n="0.35" ref="Epoxy"/>
  </material>
  
  <material name="CarbonFiber_50D">
    <D type="density" value="0.75" unit="g/cm3"/>
    <fraction n="0.65" ref="C"/>
    <fraction n="0.35" ref="Epoxy"/>
  </material>  

  <material name="Rohacell31">
    <D type="density" value="0.032" unit="g/cm3"/>
    <composite n="9" ref="C"/>
    <composite n="13" ref="H"/>
    <composite n="2" ref="O"/>
    <composite n="1" ref="N"/>
  </material>
  
  <material name="Rohacell31_50D">
    <D type="density" value="0.016" unit="g/cm3"/>
    <composite n="9" ref="C"/>
    <composite n="13" ref="H"/>
    <composite n="2" ref="O"/>
    <composite n="1" ref="N"/>
  </material>  

  <material name="RPCGasDefault" state="gas">
    <D type="density" value="0.0037" unit="g/cm3"/>
    <composite n="209" ref="C"/>
    <composite n="239" ref="H"/>
    <composite n="381" ref="F"/>
  </material>

  <material name="PolystyreneFoam">
    <D type="density" value="0.0056" unit="g/cm3"/>
    <fraction n="1.0" ref="Polystyrene"/>
  </material>

  <material name="Kapton">
    <D value="1.43" unit="g/cm3" />
    <composite n="22" ref="C"/>
    <composite n="10" ref="H" />
    <composite n="2" ref="N" />
    <composite n="5" ref="O" />
  </material>

  <material name="PEEK">
    <D value="1.37" unit="g/cm3" />
    <composite n="19" ref="C"/>
    <composite n="12" ref="H" />
    <composite n="3" ref="O" />
  </material>

  <material name="G4_BGO" state="solid">
    <MEE unit="eV" value="534.1"/>
    <D value="7.13" unit="g/cm3" />
    <fraction n="0.154126" ref="O"/>
    <fraction n="0.174820" ref="Ge" />
    <fraction n="0.671054" ref="Bi" />
  </material>

  <!-- Driftchamber: material for the drift chamber -->
  <material name="GasHe_90Isob_10">
    <D value="0.0003983999999999999" unit="g/cm3" />
    <fraction n="0.3826373431212555" ref="He"/>
    <fraction n="0.1070614182488552"   ref="H" />
    <fraction n="0.5103012386298891" ref="C" />
  </material>

</materials>