Zobrazeno 1 - 10
of 95
pro vyhledávání: '"Pakari Oskari"'
Publikováno v:
EPJ Web of Conferences, Vol 302, p 08002 (2024)
This article presents the development of a neutron noise calculation technique with a reduced calculation time based on the TFM (Transient Fission Matrix) approach. The latter contains different information such as the system transfer function (fissi
Externí odkaz:
https://doaj.org/article/f42f19e9bbef4f6ebea094b6342cb23d
Autor:
Geslot Benoit, Lamirand Vincent, Jiang Yifeng, Leconte Pierre, Pakari Oskari, Godat Daniel, Braun Laurent, Frajtag Pavel, Pantera Laurent, Pautz Andreas
Publikováno v:
EPJ Web of Conferences, Vol 288, p 04021 (2023)
In nuclear research reactors, integral experiments are powerful tools to measure integral core parameters, such as the delayed neutron fraction. Within the scope of the point kinetic approximation, reactivity modulation experiments can be used for pr
Externí odkaz:
https://doaj.org/article/ed824f00b32346a685a3e4aec5286cdb
Autor:
Hursin Mathieu, Pakari Oskari, Perret Gregory, Frajtag Pavel, Lamirand Vincent, Pázsit Imre, Dykin Victor, Por Gabor, Nylén Henrik, Pautz Andreas
Publikováno v:
EPJ Web of Conferences, Vol 247, p 08004 (2021)
Recently a joint project has been carried out between the Paul Scherrer Institut, the Ecole Polytechnique Federale de Lausanne and swissnuclear, an industrial partner, in order to determine the axial void distribution in a channel installed in the re
Externí odkaz:
https://doaj.org/article/bf63084c501b4a2fa6ba28edc90b43e6
Publikováno v:
EPJ Web of Conferences, Vol 247, p 04007 (2021)
Intrinsic neutron noise experiments offer a non-invasive manner to measure the prompt decay constant or reactivity of fissile systems. Using the fluctuations in the density of fission chains, one can infer the kinetics parameters via correlation anal
Externí odkaz:
https://doaj.org/article/65d64ddfd96643dcb02a2f981ae73e35
Publikováno v:
EPJ Nuclear Sciences & Technologies, Vol 7, p 16 (2021)
Gamma rays are an inextricable part of a nuclear reactor’s radiation field, and as such require characterization for dose rate estimations required for the radiation protection of personnel, material choices, and the design of nuclear facilities. M
Externí odkaz:
https://doaj.org/article/4db5de143f9d4342a238f7e4f86640bc
Autor:
Lamirand Vincent, Pakari Oskari, Vitullo Fanny, Ambrožič Klemen, Godat Daniel, Frajtag Pavel, Pautz Andreas
Publikováno v:
EPJ Web of Conferences, Vol 253, p 04024 (2021)
We report in the present article on the successful observation using noise analysis of the lateral oscillation of one fuel rod by ±2.5 mm around nominal at 0.1 Hz frequency, using an mm3 miniature neutron scintillator at the rod level, and a BGO gam
Externí odkaz:
https://doaj.org/article/98e19c559fb54bf083cf715593b31735
Publikováno v:
EPJ Web of Conferences, Vol 253, p 04022 (2021)
Gamma rays in nuclear reactors, arising either from nuclear reactions or decay processes, significantly contribute to the heating and dose of the reactor components. Zero power research reactors offer the possibility to measure gamma rays in a purely
Externí odkaz:
https://doaj.org/article/d90cc9c6374e416a8f5e005a7465264f
Autor:
Lamirand Vincent, Rais Adolfo, Hübner Sebastian, Lange Carsten, Pohlus Joachim, Paquee Uwe, Pohl Christoph, Pakari Oskari, Frajtag Pavel, Godat Daniel, Hursin Mathieu, Laureau Axel, Perret Grégory, Fiorina Carlo, Pautz Andreas
Publikováno v:
EPJ Web of Conferences, Vol 225, p 04023 (2020)
The present article gives an overview of the first experimental campaigns carried out in the AKR-2 and CROCUS reactors within the framework of the Horizon 2020 European project CORTEX. CORTEX aims at developing innovative core monitoring techniques t
Externí odkaz:
https://doaj.org/article/b37ec1a4695841d592d68cc437a48f80
The COLIBRI experimental program in the CROCUS reactor: characterization of the fuel rods oscillator
Autor:
Lamirand Vincent, Frajtag Pavel, Godat Daniel, Pakari Oskari, Laureau Axel, Rais Adolfo, Hursin Mathieu, Hursin Grégory, Fiorina Carlo, Pautz Andreas
Publikováno v:
EPJ Web of Conferences, Vol 225, p 04020 (2020)
The present article presents the mechanical characterization of the fuel rods oscillator developed for the purposes of the COLIBRI experimental program in CROCUS. COLIBRI aims at investigating the radiation noise related to fuel vibrations. The main
Externí odkaz:
https://doaj.org/article/6e52abc8264f4566ba7f6ac360452488
Publikováno v:
EPJ Web of Conferences, Vol 225, p 04022 (2020)
In the present article, we detail the method used to experimentally determine the power of the CROCUS zero-power reactor, and to subsequently calibrate its ex-core monitor fission chambers. Knowledge of the reactor power is a mandatory quantity for a
Externí odkaz:
https://doaj.org/article/123fcc1ca01d4d15b6efdf79e6145246