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Related Experiment Videos

A practical target system for accelerator-based BNCT which may effectively double the dose rate

G Randers-Pehrson1, D J Brenner

  • 1Center for Radiological Research, Columbia University, Irvington, New York 10533, USA. gr6@columbia.edu

Medical Physics
|July 3, 1998
PubMed
Summary

A novel hybrid beryllium-lithium target design for proton accelerator-based neutron sources offers improved neutron yield and thermal management. This innovative approach enhances neutron production efficiency compared to traditional targets.

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Area of Science:

  • Nuclear Engineering
  • Materials Science
  • Accelerator Physics

Background:

  • Neutron production targets are critical components in proton accelerator-based neutron sources.
  • Current targets like lithium have high neutron yield but poor thermal properties, while beryllium has better engineering characteristics but lower yield.
  • Optimizing target design is essential for enhancing neutron source performance.

Purpose of the Study:

  • To propose and evaluate a hybrid beryllium-lithium (Be-Li) target system.
  • To overcome the limitations of pure beryllium or lithium targets.
  • To enhance neutron yield and improve thermal management in accelerator-driven neutron sources.

Main Methods:

  • Conceptual design of a hybrid Be-Li target system.

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  • Neutronic calculations to estimate neutron yield.
  • Analysis of engineering considerations, including thermal management and material containment.
  • Comparison with existing pure beryllium and lithium target designs.

    • Main Results:

    • The proposed hybrid Be-Li target integrates upstream beryllium for neutron production and lithium containment, with downstream liquid lithium for additional neutron production and cooling.
    • Engineering feasibility is assessed to be within current technological capabilities.
    • Calculations indicate a potential neutron yield at least double that of a pure beryllium target.

    Conclusions:

    • The hybrid Be-Li target design presents a promising solution for advanced neutron sources.
    • This design offers a synergistic approach, combining the advantages of both beryllium and lithium.
    • The proposed target system demonstrates significant potential for increased neutron production efficiency and improved operational characteristics.