<?xml version='1.0' encoding='utf-8'?>
<geometry>
  <cell id="1" material="1" region="-1" universe="1" />
  <cell id="2" material="2" region="1" universe="1" />
  <cell fill="1" id="3" region="2 -3 4 -5 6 -8" rotation="10 20 30" universe="2" />
  <cell fill="1" id="4" region="2 -3 4 -5 8 -7" translation="0 0 15" universe="2" />
  <surface coeffs="1.0 0.0 0.0 5.0" id="1" type="sphere" />
  <surface boundary="vacuum" coeffs="-7.5" id="2" name="minimum x" type="x-plane" />
  <surface boundary="vacuum" coeffs="7.5" id="3" name="maximum x" type="x-plane" />
  <surface boundary="vacuum" coeffs="-7.5" id="4" name="minimum y" type="y-plane" />
  <surface boundary="vacuum" coeffs="7.5" id="5" name="maximum y" type="y-plane" />
  <surface boundary="vacuum" coeffs="-7.5" id="6" type="z-plane" />
  <surface boundary="vacuum" coeffs="22.5" id="7" type="z-plane" />
  <surface coeffs="7.5" id="8" type="z-plane" />
</geometry>
<?xml version='1.0' encoding='utf-8'?>
<materials>
  <material depletable="true" id="1">
    <density units="g/cc" value="10.0" />
    <nuclide ao="1.0" name="U235" />
  </material>
  <material id="2">
    <density units="g/cc" value="0.1" />
    <nuclide ao="0.1" name="H1" />
  </material>
</materials>
<?xml version='1.0' encoding='utf-8'?>
<settings>
  <run_mode>eigenvalue</run_mode>
  <particles>10000</particles>
  <batches>10</batches>
  <inactive>5</inactive>
  <source strength="1.0">
    <space type="box">
      <parameters>-4.0 -4.0 -4.0 4.0 4.0 4.0</parameters>
    </space>
  </source>
</settings>
