title: A novel design of beam shaping assembly to use D-T neutron generator for BNCT.
abstract: In order to use 14.1MeV neutrons produced by d-T neutron generators, two special and novel Beam Shaping Assemblies (BSA), including multi-layer and hexagonal lattice have been suggested and the effect of them has been investigated by MCNP4C Monte Carlo code. The results show that the proposed BSA can provide the qualified epithermal neutron beam for BNCT. The final epithermal neutron flux is about 6e9 n/cm2.s. The final proposed BSA has some different advantages: 1) it consists of usual and well-known materials (Pb, Al, Fluental and Cd); 2) it has a simple geometry; 3) it does not need any additional gamma filter; 4) it can provide high flux of epithermal neutrons. As this type of neutron source is under development in the world, it seems that they can be used clinically in a hospital considering the proposed BSA.
authors.affiliation: Nuclear Science and Technology Research Institute (NSTRI), Tehran, Iran. Electronic address: ykasesaz@aeoi.org.ir.
authors.forename: Yaser
authors.initials: Y
authors.lastname: Kasesaz
authors.affiliation: Department of Medical Radiation, Engineering faculty, Central Tehran Branch, Islamic Azad University, Tehran, Iran.
authors.forename: Marjan
authors.initials: M
authors.lastname: Karimi
keywords: BNCT; D-T neutron generator; MCNP4C Monte Carlo code, BSA