Final qualification of an industrial wide range neutron instrumentation in the OSIRIS MTR reactor

The CEA MONACO v2 a multichannel acquisition system dedicated to neutron and gamma measurements. It is unique as it integrates all the following features in one module: automatic generation of saturation curves, automatic generation of pulse discrimination curves, detector pulse characterization using the embedded oscilloscope module, pulse mode acquisitions in count rate or pulse height analysis, fluctuation mode and current mode acquisitions. Sensors are plugged to a single connector and the implemented operating modes run constantly in parallel. Firsly designed for on line local neutron and gamma measurements with gaseous detectors in reactor experiments, the MONACO v2 system will also be available for self-powered detectors thanks to its wide current mode working range. After two years of development, CEA teams tested two MONACO v2 prototypes in the Slovenian TRIGA Mark II research reactor in 2018, using CEA miniature ion chambers and SPNDs. The system is now ready for industrialization to be available on the nuclear instrumentation market.

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“…These modes allow such a detector to operate on a wide neutron flux range from 1.10 +5 to 1.10 +15 neutrons cm -2 .s -1 . [4].…”

Section: B Neutron Gaseous Detector Operationmentioning

confidence: 99%

MONACO v2: Multipurpose and Integrated Data Acquisition System for On-line Neutron and Gamma Measurements

Barbot¹,

Fourmentel²,

Izarra³

et al. 2020

EPJ Web Conf.

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“…The detector's sensitivity depends directly on the mean charge deposited by fission products in the gas [5]. Figure 2 illustrates the electronic system used for the IRINA project [19,20] to analyze the output signal of the FC according to the three possible modes (pulse, Campbelling, and current).…”

Section: Campbelling Modementioning

confidence: 99%

Neutron Flux Monitoring Based on Blind Source Separation Algorithms in Moroccan TRIGA MARK II Reactor

Arahmane

Hamzaoui

Moursli

2017

Science and Technology of Nuclear Installations

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We present an overview of fission chamber’s functioning modes, theoretical aspects of the nonnegative matrix factorization methods, and the opportunities that offer neutron data processing in order to achieve neutron flux monitoring tasks. Indeed, it is a part of research project that aimed at applying Blind Source Separation methods for in-core and ex-core neutron flux monitoring while analyzing the outputs of fission chamber. The latter could be used as a key issue for control, fuel management, safety concerns, and material irradiation experiments. The Blind Source Separation methods had been used in many scientific fields such as biomedical engineering and telecommunications. Recently, they were used for gamma spectrometry data processing. The originality of this research work is to apply these powerful methods to process the fission chamber output signals. We illustrated the effectiveness of this tool using simulated fission chamber signals.

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“…The analysis of the fluctuation of the signal from Fission Chambers (FCs) detectors are intended to give an accurate estimation of neutron flux. Moreover, theory and previous reactor experiments demonstrated that Campbelling mode is the best flux estimator thanks to gamma contribution rejection [3][4][5]. Experimental setup is based on using multiple FCs designed for neutrons detection [6] that can be inserted in a nuclear reactor core.…”

Section: Introduction and Contextmentioning

confidence: 99%

Digital Real-Time Multiple Channel Multiple Mode Neutron Flux Estimation on FPGA-based Device

Thévenin

Barbot

Corre

et al. 2016

EPJ Web of Conferences

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Abstract. This paper presents a complete custom full-digital instrumentation device that was designed for real-time neutron flux estimation, especially for nuclear reactor incore measurement using subminiature Fission Chambers (FCs). Entire fully functional small-footprint design (about 1714 LUTs) is implemented on FPGA. It enables real-time acquisition and analysis of multiple channels neutron's flux both in counting mode and Campbelling mode. Experimental results obtained from this brand new device are consistent with simulation results and show good agreement within good uncertainty. This device paves the way for new applications perspectives in real-time nuclear reactor monitoring.

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Final qualification of an industrial wide range neutron instrumentation in the OSIRIS MTR reactor

Cited by 7 publications

References 4 publications

MONACO v2: Multipurpose and Integrated Data Acquisition System for On-line Neutron and Gamma Measurements

MONACO v2: Multipurpose and Integrated Data Acquisition System for On-line Neutron and Gamma Measurements

Neutron Flux Monitoring Based on Blind Source Separation Algorithms in Moroccan TRIGA MARK II Reactor

Digital Real-Time Multiple Channel Multiple Mode Neutron Flux Estimation on FPGA-based Device

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