Characterization of neutron detectors at the IPEN/MB-01 nuclear reactor
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2017
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INTERNATIONAL SEMINAR ON SENSOR, INSTRUMENTATION, MEASUREMENT AND METROLOGY
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A huge Brazilian nuclear project, the Brazilian
Multipurpose Research Reactor (RMB), is being carried out and
one of the project steps is to verify experimentally the physical
quantities related to the operational performance of the new fuel
elements. In this context, the aim of this work is to characterize
the neutron detectors due to its crucial role during the nuclear
reactor criticalization. A series of experiments was performed at
the IPEN/MB-01 nuclear reactor in order to characterize a set of
new helium-3-filled gas proportional counters. The detectors
characterization procedure takes into account the operating
voltage curve and the detectors dead time. The Rossi-α method
was employed in order to acquire the time difference between a
detected neutron pair. The dead time determination through the
Rossi-α method is very important to discriminate the reflector
effect over the neutron lifetimes in subcritical reactivity levels.
Furthermore, the Auto Power Spectral Densities (APSD) for those
new detectors were experimentally acquired and those results
were compared among some well-known detectors and with
theoretical simulation results using the MCNP5 code with the
ENDF/B-VII.0 library neutron data.
Como referenciar
GONNELLI, EDUARDO; PINTO, LETICIA N.; DINIZ, RICARDO; SANTOS, ADIMIR dos. Characterization of neutron detectors at the IPEN/MB-01 nuclear reactor. In: INTERNATIONAL SEMINAR ON SENSOR, INSTRUMENTATION, MEASUREMENT AND METROLOGY, August 25-26, 2017, Surabaya, Indonesia. Proceedings... Piscataway, NJ: IEEE, 2017. p. 99-103. DOI: 10.1109/issimm.2017.8124271. Disponível em: http://repositorio.ipen.br/handle/123456789/28905. Acesso em: 26 Mar 2026.
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.