Construction of an Accelerator-based BNCT Facility at yhe Ibaraki Neutron Medical Research Center

An accelerator-based BNCT (Boron Neutron CaptureTherapy) facility is being constructed at the Ibaraki Neutron Medical ResearchCenter. It consists of a proton linac of 80kW beam power with 8 MeV energy, a berylliumtarget, and a moderator systemto provide an epithermal neutron fluxsufficient for patient treatment. The technology choices for this present system were driven by the need to house the facility in a hospital where low residual activity is essential.