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How We Test (continued)

  • For accelerated neutron testing

    • Testing can be done with Protons (sort of)

      • Mass approximates a neutron, but charge effects complicate things

      • Sources are basically monoenergetic and need correlation

      • Proton accelerators are readily available (Crocker Nuclear Labs)

    • Testing with Spallation Neutron Sources

      • LANSCE spallation spectrum matches atmospheric neutrons

      • Spallation source gives ~ 105 to 106 acceleration over background

      • Facility is operated by Department of Energy at LANL

      • Facility is only available 6 months/year due to maintenance

    • Testing in Nuclear Reactors

      • Reactors tend to yield monoenergic neutron sources

      • It’s necessary to perform test in several reactors

      • Calculations back to Hess spectrum are difficult

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