Subcritical boron experiments in the IPEN/MB-01 reactor

dc.creatorSANTOS, A. dos
dc.creatorSOUZA, G.S.
dc.creatorSANTOS, D.F.
dc.creatorANDRADE, D.A.
dc.creatorEUROPEAN RESEARCH REACTOR CONFERENCE
dc.date2019-08-27T11:48:10Z
dc.date2019-08-27T11:48:10Z
dc.dateMarch 24-28, 2019
dc.date.accessioned2023-09-28T14:11:40Z
dc.date.available2023-09-28T14:11:40Z
dc.identifierhttp://repositorio.ipen.br/handle/123456789/30123
dc.identifier0000-0002-6689-3011
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/9000355
dc.descriptionMacroscopic (APSD and CPSD) and microscopic (Rossi-??) 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 (????gen), and the subcriticality index (????). 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-?? 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-?? measurement values. The ENDF/B-VII.0 nuclear data library was employed in all cases.
dc.publisherEuropean Nuclear Society
dc.rightsopenAccess
dc.subjectboron
dc.subjectreactor noise
dc.subjectamplifiers
dc.subjectcriticality
dc.subjectsubcritical assemblies
dc.subjectipen-mb-1 reactor
dc.subjectneutrons
dc.subjectresearch reactors
dc.subjectdata processing
dc.titleSubcritical boron experiments in the IPEN/MB-01 reactor
dc.typeTexto completo de evento
dc.coverageI
dc.localBrussels, Belgium


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