An Accelerator-Based Epithermal Photoneutron Source for BNCT
Therapeutically-useful epithermal-neutron beams for Boron Neutron Capture Therapy (BNCT) are currently generated by nuclear reactors. Various accelerator-based neutron sources1–3 for BNCT have been proposed and some low-intensity prototypes of such sources, generally featuring the use of proton beams and beryllium or lithium targets have been constructed. Scaling of most of these proton devices for therapeutic applications will require the resolution of some rather difficult issues associated with target cooling. This paper describes an alternate approach to the realization of a clinically-useful accelerator-based source of epithermal neutrons for BNCT that reconciles the often-conflicting objectives of target cooling, neutron beam intensity, and neutron beam spectral purity via a two-stage photoneutron production process.
KeywordsNeutron Beam Neutron Capture Drift Tube Boron Neutron Capture Ther Epithermal Neutron
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