TY - JOUR AU - Bui, Phuong Nam AU - Huynh, Ton Nghiem AU - Nguyen, Nhi Dien AU - Le, Vinh Vinh PY - 2017/12/30 Y2 - 2024/03/29 TI - Calculation of neutronic characteristics in different reflector materials with a 15-MWt reactor core using VVR-KN fuel type JF - Nuclear Science and Technology JA - Nucl. Sci. and Tech. VL - 7 IS - 4 SE - DO - 10.53747/jnst.v7i4.92 UR - http://jnst.vn/index.php/nst/article/view/92 SP - 9-15 AB - <p><span class="fontstyle0">VVR-KN is one of the low enriched fuel types intended for a research reactor of a new Centre for Nuclear Energy Science and Technology (CNEST) of Viet Nam. As a part of design orientation for the new research reactor, the calculations of neutronic characteristics in a reactor core reflector using different materials were carried out. The investigated core configuration is a 15-MWt power loaded with VVR-KN fuel assemblies and surrounded by a reflector using beryllium, heavy water or graphite respectively. MCNP5 code together with up-to-date nuclear data libraries were used for these calculations. This paper presents the calculation results of neutron energy spectrum, neutron spatial distribution in the reflector using the above-mentioned materials. Besides, neutronic characteristics calculated for silicon doping irradiation holes in the reflector are also presented and the utilization capabilities of different reflector materials are discussed.</span></p> ER -