Beam shaping assembly optimization for 7Li(p,n)7Be accelerator based BNCT

• A Beam Shaping Assembly for accelerator based BNCT has been designed.
• A conical port for easy patient positioning and the cooling system are included.
• Several configurations can deliver tumor doses greater than 55 RBEGy.
• Good tumor doses can be obtained in less than 60 min of irradiation time.

Within the framework of accelerator-based BNCT, a project to develop a folded Tandem-ElectroStatic-Quadrupole accelerator is under way at the Atomic Energy Commission of Argentina. The proposed accelerator is conceived to deliver a proton beam of 30 mA at about 2.5 MeV. In this work we explore a Beam Shaping Assembly (BSA) design based on the 7Li(p,n)7Be neutron production reaction to obtain neutron beams to treat deep seated tumors.