publication . Article . 2021

Analysis of the neutron noise induced by fuel assembly vibrations

Andrea Zoia; Amélie Rouchon; Baptiste Gasse; Christophe Demaziere; Paolo Vinai;
Open Access English
  • Published: 23 Jan 2021
Abstract The investigation of neutron noise is key to several applications in nuclear reactor physics, such as the detection of control rod or assembly vibrations and the diagnostic of coolant speed and void fraction. In this paper we will elucidate some aspects of the noise equations in the Fourier domain, for the case of periodic fuel rod vibrations with frequency ω 0 in a small symmetrical system in which the perturbation is centrally located. We will in particular focus on the double frequency effect, i.e., the emergence of a noise component at 2 ω 0 (possibly stronger than the one at the fundamental frequency ω 0 ). Our analysis will be carried out without ...
Persistent Identifiers
free text keywords: Neutron noise, Frequency domain, Linearized equations, Non-pertubative approach, Harmonics, Nuclear Energy and Engineering, Nuclear reactor physics, Linearization, Vibration, Coolant, Fundamental frequency, Perturbation (astronomy), Control rod, Physics, Periodic graph (geometry), Mechanics
Funded by
Core monitoring techniques and experimental validation and demonstration
  • Funder: European Commission (EC)
  • Project Code: 754316
  • Funding stream: H2020 | RIA
Energy Research
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