20-22 May 2015
Asia/Bangkok timezone
The Centennial Celebration of General Relativity Theory and 80 Years of Thai Physics Graduate

Design of a BSA for Producing Epithermal Neutron based on D-T Neutron Source for BNCT

21 May 2015, 16:00
15m
Hemingways' Lounge ()

Hemingways' Lounge

Oral presentation Nuclear and Radiation Physics Nuclear and Radiation Physics

Speaker

Ms Muharani Asnal (School of Manufacturing Systems and Mechanical Engineering, Sirindhorn International Institute of Technology, Thammasat University, Pathum Thani, THAILAND 12121)

Description

Particle and Heavy Ions Transport code System (PHITS) is used to simulate capability to produce an epithermal neutron flux for BNCT of various beam shaping assembly (BSA) designs. It is assumed in this work that all designs of BSA considered is a cylindrical geometry. It is found that by adopting the flux of 14.1 MeV neutrons from a D-T neutron generator, the design that yields an optimum output is the BSA design with $^{238}$U as multiplier, AlF$_3$ as moderator, Pb as reflector, Al$_2$O$_3$ as fast neutron filter, Li as thermal neutron filter, Ni as gamma shield, and Bi as collimator, in which the out coming of the proposed BSA at the beam port can satisfy the criteria for boron neutron capture therapy (BNCT) from the International Atomic Energy Agency (IAEA). It is also found that the output of the proposed design is better than the output of other BSA designs, such as those reported by Eskandari and Kashian [1], Rasouli et al. [2] and Rasouli and Masoudi [3]. In addition, no thermal neutron is found at the beam port of the proposed design. [1] Eskandari M R and Kashian S 2009 *Annals of Nuclear Energy* **36** 1100-1102 [2] Rasouli F S, Masoudi S F and Kasezas Y 2012 *Ann. Nucl. Energy* **39** 18 [3] Rasouli F S and Masoudi S F 2012 *Appl. Rad. Isotopes* **70** 2755

Primary author

Ms Muharani Asnal (School of Manufacturing Systems and Mechanical Engineering, Sirindhorn International Institute of Technology, Thammasat University, Pathum Thani, THAILAND 12121)

Co-authors

Dr Thawatchai Onjun (School of Manufacturing Systems and Mechanical Engineering, Sirindhorn International Institute of Technology, Thammasat University, Pathum Thani, THAILAND 12121) Dr Thiansin Liamsuwan (Nuclear Research and Development Division, Thailand Institute of Nuclear Technology, Ongkharak, Nakhon Nayok, THAILAND 26120)

Presentation Materials