CrystalPilot: A machine-learning based software platform for single crystal neutron diffraction experiments [PDF]
Structural DynamicsWe present an in-house software platform CrystalPilot, designed to enable smart, adaptive single crystal neutron diffraction experiments at the TOPAZ beamline at Oak Ridge National Laboratory.
Zhongcan Xiao +4 more
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Investigation of organic scintillators for neutron-gamma noise measurements in a zero power reactor [PDF]
EPJ Web of Conferences, 2023 Noise measurements in light water reactor systems aid in generating validation data for integral point kinetic parameter predictions and monitoring parameters for reactor safety and safeguards.
Darby F.B. +6 more
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ANALYSIS AND COMPARISON OF APOLLO3® AND TRIPOLI-4® NEUTRON NOISE SOLVERS [PDF]
EPJ Web of Conferences, 2021 Neutron noise analysis addresses the description of small time-dependent flux fluctuations in reactor cores, induced by small global or local perturbations of the macroscopic cross sections due to density fluctuations of the coolant, to vibrations of ...
Rouchon Amélie +2 more
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NEUTRON NOISE SPECTRAL FEATURES OF SIMULATED MECHANICAL AND THERMAL-HYDRAULIC PERTURBATIONS IN A PWR CORE [PDF]
EPJ Web of Conferences, 2021 KWU-PWR reactors (SIEMENS design) are commonly exhibiting high neutron noise levels that can lead to costly operational issues. Recent analysis seems to indicate that, coolant flow, temperature oscillations, and mechanical vibrations have a key impact on
Torres L.A +4 more
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A FINITE ELEMENT METHOD FOR NEUTRON NOISE ANALYSIS IN HEXAGONAL REACTORS [PDF]
EPJ Web of Conferences, 2021 The early detection of anomalies through the analysis of the neutron noise recorded by incore and ex-core instrumentation gives the possibility to take proper actions before such problems lead to safety concerns or impact plant availability. The study of
Vidal-Ferràndiz A. +4 more
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RECONSTRUCTING THE AXIAL VOID VELOCITY PROFILE IN BWRs FROM MEASUREMENTS OF THE IN-CORE NEUTRON NOISE [PDF]
EPJ Web of Conferences, 2021 The problem of determining the axial velocity profile from the in-core neutron noise measurements is revisited, with the purpose of developing an objective method for the determination of the void fraction.
Pázsit Imre +3 more
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ANALYSIS OF THE FIRST COLIBRI FUEL RODS OSCILLATION CAMPAIGN IN THE CROCUS REACTOR FOR THE EUROPEAN PROJECT CORTEX [PDF]
EPJ Web of Conferences, 2021 The Horizon2020 European project CORTEX aims at developing an innovative core monitoring technique that allows detecting anomalies in nuclear reactors, such as excessive vibrations of core internals, flow blockage, or coolant inlet perturbations.
Lamirand V. +14 more
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NEUTRON NOISE-BASED ANOMALY CLASSIFICATION AND LOCALIZATION USING MACHINE LEARNING [PDF]
EPJ Web of Conferences, 2021 A methodology is proposed in this paper allowing the classification of anomalies and subsequently their possible localization in nuclear reactor cores during operation.
Demazière C +7 more
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FAST ROSSI-ALPHA MEASUREMENTS OF PLUTONIUM USING ORGANIC SCINTILLATORS [PDF]
EPJ Web of Conferences, 2021 In this work, Rossi-alpha measurements were simultaneously performed with a 3He-based detection system and an organic scintillator-based detection system. The assembly is 15 kg of plutonium (93 wt% 239Pu) reflected by copper and moderated by lead.
Hua M.Y. +9 more
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Time-frequency analysis of reactor neutron noise under bubble disturbance and control rod vibration
Nuclear Engineering and Technology, 2021 Time-frequency analysis technique is an effective analysis tool for non-stationary processes. In the field of reactor neutron noise, the time-frequency analysis method has not been thoroughly researched and widely used.
Baoxin Yuan +6 more
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