forward_trd.xml

<?xml version="1.0" encoding="UTF-8"?>
<lccdd>
  <define>
    <comment>
      --------------------------
      Forward TRD Parameters
      --------------------------
    </comment>
    <constant name="ForwardTRD_zmin" value="BarrelTracking_length/2.0 + ForwardTracking_length + ForwardRICH_length"/>
    <constant name="ForwardTRD_rmin" value="ForwardPID_rmin1"/>
    <constant name="ForwardTRD_rmax" value="Solenoid_rmin"/>
  </define>

  <detectors>
    <detector 
      id="ForwardTRD_ID"
      name="ForwardTRD"
      type="ref_DiskTracker"
      insideTrackingVolume="true"
      reflect="false"
      vis="AnlRed">
      <position x="0" y="0" z="0.0"/>
      <layer id="1" 
        vis="AnlRed"
        inner_z="ForwardTRD_zmin" 
        inner_r="ForwardTRD_rmin" 
        outer_r="ForwardTRD_rmax">
        <slice material="Air" thickness="ForwardTRD_length/2.5" vis="AnlRed" />
      </layer>

      <layer id="1" 
        vis="AnlRed"
        inner_z="ForwardTRD_zmin+ForwardTRD_length/2.0" 
        inner_r="ForwardTRD_rmin" 
        outer_r="ForwardTRD_rmax">
        <slice material="Air" thickness="ForwardTRD_length/2.5" vis="AnlRed" />
      </layer>
    </detector>
  </detectors>

</lccdd>