Subcritical boron experiments in the IPEN/MB-01 reactor
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2019
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EUROPEAN RESEARCH REACTOR CONFERENCE
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Resumo
Macroscopic (APSD and CPSD) and microscopic (Rossi-α) neutron noise experiments
were performed in the IPEN/MB-01 reactor in order to measure subcritical
reactivities. Subcritical states of up to around -6600 pcm were reached with insertion
of boric acid (H3BO3) into the moderator tank. The subcritical kinetic model of
Gandini and Salvatores was employed to infer the relative power between two
consecutive subcritical cases, the subcritical reactivity (𝜌gen), and the subcriticality
index (𝜁). This experimental methodology to measure these parameters was successfully
employed in a previous experiment performed in the IPEN/MB-01 reactor.
The measured subcritical reactivities are in good agreement for the APSD and
Rossi-α cases. However, some drawbacks were found for the CPSD cases due to
difficulties in the establishment of the cutoff frequency. The MCNP6.1 calculated
subcritical reactivities were in a good agreement to APSD´s and Rossi-α measurement
values. The ENDF/B-VII.0 nuclear data library was employed in all cases.
Como referenciar
SANTOS, A. dos; SOUZA, G.S.; SANTOS, D.F.; ANDRADE, D.A. Subcritical boron experiments in the IPEN/MB-01 reactor. In: EUROPEAN RESEARCH REACTOR CONFERENCE, March 24-28, 2019, Jordan. Proceedings... Brussels, Belgium: European Nuclear Society, 2019. Disponível em: http://repositorio.ipen.br/handle/123456789/30123. Acesso em: 30 Dec 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.