PISTIL, a reactivity modulation device to probe the transfer function of the nuclear reactor CROCUS

The present article summarizes the development and testing of a reactivity modulation device developed by the French Atomic and Alternative Energies Commission (CEA). It was installed in the CROCUS reactor of the Swiss Federal Institute of Technology in Lausanne (EPFL). Experimental tests were perfo...

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Autores principales:	Jiang Yifeng, Geslot Benoit, Lamirand Vincent, Leconte Pierre, Godat Daniel, Braun Laurent, Frajtag Pavel, Coquelet-Pascal Christine, Pautz Andreas
Formato:	article
Lenguaje:	EN
Publicado:	EDP Sciences 2021
Materias:	in-core integral experiment reactivity modulation zero-power reactor transfer function reactor kinetics Physics QC1-999
Acceso en línea:	https://doaj.org/article/7a52348235724ecfa86b9f3c49e1ac99
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spelling	oai:doaj.org-article:7a52348235724ecfa86b9f3c49e1ac992021-12-02T17:12:45ZPISTIL, a reactivity modulation device to probe the transfer function of the nuclear reactor CROCUS2100-014X10.1051/epjconf/202125304007https://doaj.org/article/7a52348235724ecfa86b9f3c49e1ac992021-01-01T00:00:00Zhttps://www.epj-conferences.org/articles/epjconf/pdf/2021/07/epjconf_animma2021_04007.pdfhttps://doaj.org/toc/2100-014XThe present article summarizes the development and testing of a reactivity modulation device developed by the French Atomic and Alternative Energies Commission (CEA). It was installed in the CROCUS reactor of the Swiss Federal Institute of Technology in Lausanne (EPFL). Experimental tests were performed in the framework of a collaboration between CEA and EPFL. The so-called PISTIL device aims at measuring the nuclear reactor transfer function in the frequency range of interest between 1 mHz and 200 Hz, in order to probe the in-core kinetic behavior of prompt and delayed neutrons. The reactivity modulation is obtained from the rotation of cadmium foils. The design of the system was driven with the objective of installing PISTIL at the center of the CROCUS reactor. Neutronic simulations with TRIPOLI-4 Monte Carlo code were performed to select the suitable design parameters and meet the safety requirements of the reactor operation. The total reactivity worth of the device, as estimated by TRIPOLI-4 Monte Carlo calculation, was approximately 0.16 $ and the maximum amplitude of the reactivity modulation was about 0.013 $. In-core reactivity calibration was then performed and were consistent as compared to TRIPOLI-4 estimations.Jiang YifengGeslot BenoitLamirand VincentLeconte PierreGodat DanielBraun LaurentFrajtag PavelCoquelet-Pascal ChristinePautz AndreasEDP Sciencesarticlein-core integral experimentreactivity modulationzero-power reactor transfer functionreactor kineticsPhysicsQC1-999ENEPJ Web of Conferences, Vol 253, p 04007 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	in-core integral experiment reactivity modulation zero-power reactor transfer function reactor kinetics Physics QC1-999
spellingShingle	in-core integral experiment reactivity modulation zero-power reactor transfer function reactor kinetics Physics QC1-999 Jiang Yifeng Geslot Benoit Lamirand Vincent Leconte Pierre Godat Daniel Braun Laurent Frajtag Pavel Coquelet-Pascal Christine Pautz Andreas PISTIL, a reactivity modulation device to probe the transfer function of the nuclear reactor CROCUS
description	The present article summarizes the development and testing of a reactivity modulation device developed by the French Atomic and Alternative Energies Commission (CEA). It was installed in the CROCUS reactor of the Swiss Federal Institute of Technology in Lausanne (EPFL). Experimental tests were performed in the framework of a collaboration between CEA and EPFL. The so-called PISTIL device aims at measuring the nuclear reactor transfer function in the frequency range of interest between 1 mHz and 200 Hz, in order to probe the in-core kinetic behavior of prompt and delayed neutrons. The reactivity modulation is obtained from the rotation of cadmium foils. The design of the system was driven with the objective of installing PISTIL at the center of the CROCUS reactor. Neutronic simulations with TRIPOLI-4 Monte Carlo code were performed to select the suitable design parameters and meet the safety requirements of the reactor operation. The total reactivity worth of the device, as estimated by TRIPOLI-4 Monte Carlo calculation, was approximately 0.16 $ and the maximum amplitude of the reactivity modulation was about 0.013 $. In-core reactivity calibration was then performed and were consistent as compared to TRIPOLI-4 estimations.
format	article
author	Jiang Yifeng Geslot Benoit Lamirand Vincent Leconte Pierre Godat Daniel Braun Laurent Frajtag Pavel Coquelet-Pascal Christine Pautz Andreas
author_facet	Jiang Yifeng Geslot Benoit Lamirand Vincent Leconte Pierre Godat Daniel Braun Laurent Frajtag Pavel Coquelet-Pascal Christine Pautz Andreas
author_sort	Jiang Yifeng
title	PISTIL, a reactivity modulation device to probe the transfer function of the nuclear reactor CROCUS
title_short	PISTIL, a reactivity modulation device to probe the transfer function of the nuclear reactor CROCUS
title_full	PISTIL, a reactivity modulation device to probe the transfer function of the nuclear reactor CROCUS
title_fullStr	PISTIL, a reactivity modulation device to probe the transfer function of the nuclear reactor CROCUS
title_full_unstemmed	PISTIL, a reactivity modulation device to probe the transfer function of the nuclear reactor CROCUS
title_sort	pistil, a reactivity modulation device to probe the transfer function of the nuclear reactor crocus
publisher	EDP Sciences
publishDate	2021
url	https://doaj.org/article/7a52348235724ecfa86b9f3c49e1ac99
work_keys_str_mv	AT jiangyifeng pistilareactivitymodulationdevicetoprobethetransferfunctionofthenuclearreactorcrocus AT geslotbenoit pistilareactivitymodulationdevicetoprobethetransferfunctionofthenuclearreactorcrocus AT lamirandvincent pistilareactivitymodulationdevicetoprobethetransferfunctionofthenuclearreactorcrocus AT lecontepierre pistilareactivitymodulationdevicetoprobethetransferfunctionofthenuclearreactorcrocus AT godatdaniel pistilareactivitymodulationdevicetoprobethetransferfunctionofthenuclearreactorcrocus AT braunlaurent pistilareactivitymodulationdevicetoprobethetransferfunctionofthenuclearreactorcrocus AT frajtagpavel pistilareactivitymodulationdevicetoprobethetransferfunctionofthenuclearreactorcrocus AT coqueletpascalchristine pistilareactivitymodulationdevicetoprobethetransferfunctionofthenuclearreactorcrocus AT pautzandreas pistilareactivitymodulationdevicetoprobethetransferfunctionofthenuclearreactorcrocus
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PISTIL, a reactivity modulation device to probe the transfer function of the nuclear reactor CROCUS

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