Development of boron sheet and DT neutron irradiation experiments of multi-layered concrete structure with boron sheet (The 12th International Conference on Radiation Shielding (ICRS-12) and the 17th Topical Meeting of the Radiation Protection and Shielding Division of ANS (RPSD-2012)) -- (Shielding Materials)

a , The boron sheet was developed in order to reduce induced activity in concrete walls applied for neutron generation facilities, and it was applied to a new multi-layered concrete structure. DT neutron irradiation experiments were performed by using multi-layered concrete structure mockups with the boron sheet at FNS in JAEA. It is demonstrated that the multi-layered concrete structure with the boron sheet can effectively reduce the low energy neutrons, which leads to less induced activity in concrete walls.