The production of radioisotopes in the Brazilian research reactors has a limited capacity leading to a high dependence on external supply. In order to overcome this issue and due to the high age of these research reactors, in 2010 the Brazilian Nuclear Commission decided to develop a new research reactor for radioisotope production, nuclear materials and fuel irradiation testing and neutron beam science. Regarding the last purpose, the Brazilian Multipurpose Reactor (RMB) has been designed to provide thermal and cold neutron beams using neutron guides to transport neutrons to a large hall of instruments. This article describes the main characteristics of the RMB project.
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