forward_trd.xml

<?xml version="1.0" encoding="UTF-8"?>
<lccdd>
  <define>
    <comment>
      --------------------------
      Forward TRD Parameters
      --------------------------
    </comment>
    <constant name="ForwardTRD_zmin" value="ForwardRICH_zmin + ForwardRICH_length+ 1*cm"/>
    <constant name="ForwardTRD_rmin" value="ForwardRICH_rmin"/>
    <constant name="ForwardTRD_rmax" value="EcalBarrel_rmax - 5*cm"/>
  </define>

  <detectors>
    <detector 
      id="ForwardTRD_ID"
      name="ForwardTRD"
      type="ref_DiskTracker"
      insideTrackingVolume="true"
      reflect="false"
      vis="Argonne_Red">
      <position x="0" y="0" z="0"/>
      <layer id="1" 
        vis="Argonne_Blue"
        inner_z="ForwardTRD_zmin" 
        inner_r="ForwardTRD_rmin" 
        outer_r="ForwardTRD_rmax">
        <slice material="Air" thickness="ForwardTRD_length/2.0" vis="Argonne_Blue" />
      </layer>
    </detector>
  </detectors>

</lccdd>