<?xml version='1.0' encoding='utf-8'?>
<model>
  <materials>
    <material depletable="true" id="1" name="UO2 (2.4%)">
      <density units="g/cm3" value="10.29769"/>
      <nuclide ao="4.4843e-06" name="U234"/>
      <nuclide ao="0.00055815" name="U235"/>
      <nuclide ao="0.022408" name="U238"/>
      <nuclide ao="0.045829" name="O16"/>
    </material>
    <material id="2" name="Zircaloy">
      <density units="g/cm3" value="6.55"/>
      <nuclide ao="0.021827" name="Zr90"/>
      <nuclide ao="0.00476" name="Zr91"/>
      <nuclide ao="0.0072758" name="Zr92"/>
      <nuclide ao="0.0073734" name="Zr94"/>
      <nuclide ao="0.0011879" name="Zr96"/>
    </material>
    <material id="3" name="Hot borated water">
      <density units="g/cm3" value="0.740582"/>
      <nuclide ao="0.049457" name="H1"/>
      <nuclide ao="0.024672" name="O16"/>
      <nuclide ao="8.0042e-06" name="B10"/>
      <nuclide ao="3.2218e-05" name="B11"/>
      <sab name="c_H_in_H2O"/>
    </material>
  </materials>
  <geometry>
    <cell id="1" material="1" name="Fuel" region="-1" universe="0"/>
    <cell id="2" material="2" name="Cladding" region="1 -2" universe="0"/>
    <cell id="3" material="3" name="Water" region="2 3 -4 5 -6" universe="0"/>
    <surface coeffs="0 0 0.39218" id="1" name="Fuel OR" type="z-cylinder"/>
    <surface coeffs="0 0 0.4572" id="2" name="Clad OR" type="z-cylinder"/>
    <surface boundary="reflective" coeffs="-0.63" id="3" name="left" type="x-plane"/>
    <surface boundary="reflective" coeffs="0.63" id="4" name="right" type="x-plane"/>
    <surface boundary="reflective" coeffs="-0.63" id="5" name="bottom" type="y-plane"/>
    <surface boundary="reflective" coeffs="0.63" id="6" name="top" type="y-plane"/>
  </geometry>
  <settings>
    <run_mode>eigenvalue</run_mode>
    <particles>100</particles>
    <batches>10</batches>
    <inactive>5</inactive>
    <source particle="neutron" strength="1.0" type="independent">
      <space type="fission">
        <parameters>-0.63 -0.63 -1 0.63 0.63 1</parameters>
      </space>
    </source>
  </settings>
  <tallies>
    <filter id="1" type="material">
      <bins>1</bins>
    </filter>
    <filter id="2" type="energy">
      <bins>0.0 0.625 20000000.0</bins>
    </filter>
    <filter id="7" type="energyout">
      <bins>0.0 0.625 20000000.0</bins>
    </filter>
    <filter id="11" type="legendre">
      <order>3</order>
    </filter>
    <filter id="15" type="material">
      <bins>2</bins>
    </filter>
    <filter id="29" type="material">
      <bins>3</bins>
    </filter>
    <tally id="1">
      <filters>1 2</filters>
      <nuclides>total</nuclides>
      <scores>flux</scores>
      <estimator>tracklength</estimator>
    </tally>
    <tally id="2">
      <filters>1 2</filters>
      <nuclides>total</nuclides>
      <scores>total</scores>
      <estimator>tracklength</estimator>
    </tally>
    <tally id="3">
      <filters>1 2</filters>
      <nuclides>total</nuclides>
      <scores>flux</scores>
      <estimator>tracklength</estimator>
    </tally>
    <tally id="4">
      <filters>1 2</filters>
      <nuclides>total</nuclides>
      <scores>absorption</scores>
      <estimator>tracklength</estimator>
    </tally>
    <tally id="5">
      <filters>1 2</filters>
      <nuclides>total</nuclides>
      <scores>flux</scores>
      <estimator>analog</estimator>
    </tally>
    <tally id="6">
      <filters>1 2 7</filters>
      <nuclides>total</nuclides>
      <scores>nu-fission</scores>
      <estimator>analog</estimator>
    </tally>
    <tally id="7">
      <filters>1 2</filters>
      <nuclides>total</nuclides>
      <scores>flux</scores>
      <estimator>analog</estimator>
    </tally>
    <tally id="8">
      <filters>1 2 7 11</filters>
      <nuclides>total</nuclides>
      <scores>nu-scatter</scores>
      <estimator>analog</estimator>
    </tally>
    <tally id="9">
      <filters>1 2 7</filters>
      <nuclides>total</nuclides>
      <scores>nu-scatter</scores>
      <estimator>analog</estimator>
    </tally>
    <tally id="10">
      <filters>1 2 7</filters>
      <nuclides>total</nuclides>
      <scores>scatter</scores>
      <estimator>analog</estimator>
    </tally>
    <tally id="11">
      <filters>15 2</filters>
      <nuclides>total</nuclides>
      <scores>flux</scores>
      <estimator>tracklength</estimator>
    </tally>
    <tally id="12">
      <filters>15 2</filters>
      <nuclides>total</nuclides>
      <scores>total</scores>
      <estimator>tracklength</estimator>
    </tally>
    <tally id="13">
      <filters>15 2</filters>
      <nuclides>total</nuclides>
      <scores>flux</scores>
      <estimator>tracklength</estimator>
    </tally>
    <tally id="14">
      <filters>15 2</filters>
      <nuclides>total</nuclides>
      <scores>absorption</scores>
      <estimator>tracklength</estimator>
    </tally>
    <tally id="15">
      <filters>15 2</filters>
      <nuclides>total</nuclides>
      <scores>flux</scores>
      <estimator>analog</estimator>
    </tally>
    <tally id="16">
      <filters>15 2 7</filters>
      <nuclides>total</nuclides>
      <scores>nu-fission</scores>
      <estimator>analog</estimator>
    </tally>
    <tally id="17">
      <filters>15 2</filters>
      <nuclides>total</nuclides>
      <scores>flux</scores>
      <estimator>analog</estimator>
    </tally>
    <tally id="18">
      <filters>15 2 7 11</filters>
      <nuclides>total</nuclides>
      <scores>nu-scatter</scores>
      <estimator>analog</estimator>
    </tally>
    <tally id="19">
      <filters>15 2 7</filters>
      <nuclides>total</nuclides>
      <scores>nu-scatter</scores>
      <estimator>analog</estimator>
    </tally>
    <tally id="20">
      <filters>15 2 7</filters>
      <nuclides>total</nuclides>
      <scores>scatter</scores>
      <estimator>analog</estimator>
    </tally>
    <tally id="21">
      <filters>29 2</filters>
      <nuclides>total</nuclides>
      <scores>flux</scores>
      <estimator>tracklength</estimator>
    </tally>
    <tally id="22">
      <filters>29 2</filters>
      <nuclides>total</nuclides>
      <scores>total</scores>
      <estimator>tracklength</estimator>
    </tally>
    <tally id="23">
      <filters>29 2</filters>
      <nuclides>total</nuclides>
      <scores>flux</scores>
      <estimator>tracklength</estimator>
    </tally>
    <tally id="24">
      <filters>29 2</filters>
      <nuclides>total</nuclides>
      <scores>absorption</scores>
      <estimator>tracklength</estimator>
    </tally>
    <tally id="25">
      <filters>29 2</filters>
      <nuclides>total</nuclides>
      <scores>flux</scores>
      <estimator>analog</estimator>
    </tally>
    <tally id="26">
      <filters>29 2 7</filters>
      <nuclides>total</nuclides>
      <scores>nu-fission</scores>
      <estimator>analog</estimator>
    </tally>
    <tally id="27">
      <filters>29 2</filters>
      <nuclides>total</nuclides>
      <scores>flux</scores>
      <estimator>analog</estimator>
    </tally>
    <tally id="28">
      <filters>29 2 7 11</filters>
      <nuclides>total</nuclides>
      <scores>nu-scatter</scores>
      <estimator>analog</estimator>
    </tally>
    <tally id="29">
      <filters>29 2 7</filters>
      <nuclides>total</nuclides>
      <scores>nu-scatter</scores>
      <estimator>analog</estimator>
    </tally>
    <tally id="30">
      <filters>29 2 7</filters>
      <nuclides>total</nuclides>
      <scores>scatter</scores>
      <estimator>analog</estimator>
    </tally>
  </tallies>
</model>
