<?xml version='1.0' encoding='utf-8'?>
<model>
  <materials>
    <material id="6">
      <density units="g/cm3" value="2.6989"/>
      <nuclide ao="1.0" name="Al27"/>
    </material>
  </materials>
  <geometry>
    <cell id="12" material="void" region="-16 17 -18" universe="10"/>
    <cell id="13" material="6" region="-16 18 -19" universe="10"/>
    <cell id="14" material="void" region="~(-16 17 -19)" universe="10"/>
    <surface id="16" type="x-cylinder" boundary="vacuum" coeffs="0.0 0.0 1.0"/>
    <surface id="17" type="x-plane" boundary="vacuum" coeffs="-1.0"/>
    <surface id="18" type="x-plane" coeffs="1.0"/>
    <surface id="19" type="x-plane" boundary="vacuum" coeffs="1000000000.0"/>
  </geometry>
  <settings>
    <run_mode>fixed source</run_mode>
    <particles>10000</particles>
    <batches>1</batches>
    <source strength="1.0">
      <space type="point">
        <parameters>0 0 0</parameters>
      </space>
      <angle type="monodirectional" reference_uvw="1.0 0.0 0.0"/>
      <energy type="discrete">
        <parameters>14000000.0 1.0</parameters>
      </energy>
    </source>
    <electron_treatment>ttb</electron_treatment>
    <photon_transport>true</photon_transport>
    <cutoff>
      <energy_photon>1000.0</energy_photon>
    </cutoff>
  </settings>
  <tallies>
    <filter id="1" type="surface">
      <bins>16</bins>
    </filter>
    <filter id="2" type="particle">
      <bins>neutron photon electron positron</bins>
    </filter>
    <tally id="1">
      <filters>1 2</filters>
      <scores>current</scores>
    </tally>
    <tally id="2">
      <filters>2</filters>
      <nuclides>Al27 total</nuclides>
      <scores>total (n,gamma)</scores>
      <estimator>tracklength</estimator>
    </tally>
    <tally id="3">
      <filters>2</filters>
      <nuclides>Al27 total</nuclides>
      <scores>total heating (n,gamma)</scores>
      <estimator>collision</estimator>
    </tally>
    <tally id="4">
      <filters>2</filters>
      <nuclides>Al27 total</nuclides>
      <scores>total heating (n,gamma)</scores>
      <estimator>analog</estimator>
    </tally>
  </tallies>
</model>
