<materials>
    <element Z="13" formula=" " name="Aluminum">
      <atom value="26.9815"/>
    </element>
    <element Z="1" formula=" " name="Hydrogen">
      <atom value="1.00794"/>
    </element>
    <element name="Beryllium" Z="4" formula=" ">
      <atom value="9.01218"/>
    </element>
    <element name="Tungsten" Z="74" formula=" ">
      <atom value="183.84"/>
    </element>
    <element name="Cesium" Z="55" formula=" ">
      <atom value="132.905"/>
    </element>
    <element name="Iodine" Z="53" formula=" ">
      <atom value="126.904"/>
    </element>
    <element name="Nitrogen" Z="7" formula=" ">
      <atom value="14.0067"/>
    </element>
    <element name="Copper" Z="29" formula=" ">
      <atom value="63.546"/>
    </element>
    <element Z="6" formula=" " name="Carbon">
      <atom value="12.011"/>
    </element>
    <element Z="8" formula=" " name="Oxygen">
      <atom value="15.9994"/>
    </element>
    <element Z="17" formula=" " name="Chlorine">
      <atom value="35.4527"/>
    </element>
    <element Z="14" formula=" " name="Silicon">
      <atom value="28.0855"/>
    </element>
    <element name="Tantalum" Z="73" formula=" ">
        <atom value="180.948"/>
    </element>
    <element name="Nickel" Z="28" formula=" ">
        <atom value="58.6934"/>
    </element>
    <element name="Titanium" Z="22" formula=" ">
      <atom value="47.867"/>
    </element>
    <material name="SILICON" formula=" ">
      <D value="2.33"/>
      <fraction n="1" ref="Silicon"/>
    </material>
    <material name="Al2O3" formula=" ">
      <D value="3.98"/>
      <composite n="2" ref="Aluminum"/>
      <composite n="3" ref="Oxygen"/>
    </material>
    <material formula=" " name="ALUMINUM">
      <D value="2.6989"/>
      <fraction n="1" ref="Aluminum"/>
    </material>
    <material formula="H25C21O5Cl" name="Resin4PCB">
      <D value="1.1"/>
      <composite n="25" ref="Hydrogen"/>
      <composite n="21" ref="Carbon"/>
      <composite n="5" ref="Oxygen"/>
      <composite n="1" ref="Chlorine"/>
    </material>
    <material name="KAPTON" formula=" ">
      <D value="1.43"/>
      <composite n="22" ref="Carbon"/>
      <composite n="10" ref="Hydrogen"/>
      <composite n="2" ref="Nitrogen"/>
      <composite n="5" ref="Oxygen"/>
    </material>
    <material name="COPPER" formula=" ">
      <D value="8.96"/>
      <fraction n="1" ref="Copper"/>
    </material>
    <material name="CsI" formula=" ">
      <D value="4.51"/>
      <composite n="1" ref="Cesium"/>
      <composite n="1" ref="Iodine"/>
    </material>

    <material formula=" " name="SiO2">
      <D value="2.32"/>
      <composite n="2" ref="Oxygen"/>
      <composite n="1" ref="Silicon"/>
    </material>
    <material name="BERYLLIUM" formula=" ">
      <D value="1.848"/>
      <fraction n="1" ref="Beryllium"/>
    </material>
    <material formula=" " name="FR-4">
      <D value="1.85"/>
      <fraction n="0.5" ref="Resin4PCB"/>
      <fraction n="0.5" ref="SiO2"/>
    </material>
    <material name="TANTALUM" formula="Ta">
      <D value="16.654"/>
      <fraction n="1" ref="Tantalum"/>
    </material>
    <material name="NICKEL" formula=" ">
      <D value="8.902"/>
      <fraction n="1" ref="Nickel"/>
    </material>
    <material Z="1" name="GDML_World_Default">
      <D value="1e-025"/>
      <atom value="1"/>
    </material>
    <material name="TUNGSTEN" formula=" ">
      <D value="19.3"/>
      <fraction n="1" ref="Tungsten"/>
    </material>
    <material name="TITANIUM" formula=" ">
      <D value="4.54"/>
      <fraction n="1" ref="Titanium"/>
    </material>
    <material Z="1" name="GDML_Shape_Default">
      <D value="1"/>
      <atom value="1"/>
    </material>

  </materials>