| Revue: | Brazilian journal of physics |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000336880 |
| ISSN: | 0103-9733 |
| Autores: | Araujo, Arione1 Pereira, Claubia1 Veloso, Maria Auxiliadora Fortini1 Costa, Antonella Lombardi1 Dalle, Hugo Moura2 |
| Instituciones: | 1Universidade Federal de Minas Gerais, Escola de Engenharia, Belo Horizonte, Minas Gerais. Brasil 2Comissao Nacional de Energia Nuclear, Centro de Desenvolvimento da Tecnologia Nuclear, Belo Horizonte, Minas Gerais. Brasil |
| Año: | 2010 |
| Periodo: | Mar |
| Volumen: | 40 |
| Número: | 1 |
| Paginación: | 58-62 |
| País: | Brasil |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Experimental, analítico |
| Resumen en inglés | The International Thermonuclear Experimental Reactor (ITER) will perform Deuterium-Tritium (DT) plasma experiments and the neutrons production rate at 14.1 MeV will achieve the level of 1013n:cm2:s1. In this work, the neutron flux and the dose rate during ITER operation has been calculated using the one-dimensional model of the Monte Carlo code MCNP5 and the FENDL/MC-2.1 nuclear data library. The neutron flux and dose rate associated during normal ITER operation were determined along the radial machine direction. Calculations for two different types of concrete compositions were performed to investigate the impact of the bioshield filling materials on the dose rate estimation. The results show that the dose rate level near to the outer wall of the tokamak hall is close to the allowable limit dose. Taking into account the use of large boron concentration in the biological shield concrete (2.9% weight fraction), it was obtained a dose rate reduction by one order of magnitude. The dose rate is dominated by the secondary gamma ray. The magnitude of the dose rate on the outside hall of bioshield during normal ITER operation can not be considered low in accordance with the result found in the simulation performed in this work, i.e., 1 μ Sv:h1 |
| Disciplinas: | Física y astronomía |
| Palabras clave: | Física nuclear, Reactores nucleares, Flujo de neutrones, Método Monte Carlo, Fotones |
| Keyword: | Physics and astronomy, Nuclear physics, Nuclear reactors, Neutron flux, Monte Carlo method, Photons |
| Texte intégral: | Texto completo (Ver PDF) |
