Development of target system for intense neutron source of p-Li reaction

A target cooling system was developed for an intense neutron source of p-Li reaction. The system consists of target cooling devices and protection devices for lithium evaporation. A pin-structure cooling device was developed to enhance cooling power. Functional graded material was utilized for the evaporation of lithium. Test experiments were performed by using the neutron exposure accelerator system for biological effect experiments (NASBEE) at the National Institute of Radiological Sciences (NIRS) in Japan. The target system was confirmed to be applicable for accelerator-based boron neutron capture therapy. •The protection of evaporation of lithium target in BNCT was designed based on heat transfer.•The functionally graded material is utilized for the multilayer target.•No blistering was confirmed.