Setup for the measurement of the <sup>235</sup>U(n, f) cross section relative to n-p scattering up to 1 GeV

Manna, A.; Aberle, O.; Alcayne, V.; Amaducci, S.; Andrzejewski, J.; Audouin, L.; Babiano, V-Suarez; Bacak, M.; Barbagallo, M.; Bennett, S.; Berthoumieux, E.; Bosnar, D.; Brown, A.; Busso, M.; Caamaño, M.; Caballero, L.; Calviani, M.; Calvi, F.; Cano‐Ott, D.; Casanovas, A.; Cerutti, F.; Chiaveri, E.; Colonna, N.; Cortés, G.; Cortés‐Giraldo, M. A.; Coséntino, L.; Cristallo, S.; Damone, L. A.; Davies, P.; Diakaki, Μ.; Dietz, M.; Domingo‐Pardo, C.; Dressler, R.; Ducasse, Q.; Dupont, E.; Durán, I.; Eleme, Z.; Fernández-Domíngez, B.; Ferrari, A.; Ferro-Gonçalves, I.; Finocchiaro, P.; Furman, V.; Garg, R.; Gawlik, A.; Gilardoni, S.; Göbel, K.; González‐Romero, E.; Guerrero, C.; Gunsing, F.; Heinitz, S.; Heyse, J.; Jenkins, D. G.; Jericha, E.; Jiri, U.; Junghans, A.; Kadi, Y.; Käppeler, F.; Kimura, A.; Knapová, I.; Kokkoris, M.; Kopatch, Yu. N.; Krtiička, M.; Kurtulgil, D.; Ladarescu, I.; Lederer-Woods, C.; Lerendegui-Marco, J.; Lonsdale, S. J.; Macina, D.; Martínez, T.; Masi, A.; Massimi, C.; Mastinu, P.; Mastromarco, M.; Maugeri, E. A.; Mazzone, A.; Mendoza, E.; Mengoni, A.; Michalopoulou, V.; Milazzo, Paolo; Millán-Callado, M. A.; Mingrone, F.; Moreno-Soto, J.; Musumarra, A.; Negret, A.; Nolte, R.; Ogállar, F.; Oprea, A.; Patronis, N.; Pavlik, A.; Perkowski, J.; Petrone, C.; Piersanti, L.; Pirovano, E.; Porras, I.; Praena, J.; Quesada, J. M.; Ramos, D.; Reifarth, R.; Rochman, D.; Rubbia, C.; Sabaté-Gilarte, M.; Saxena, A.; Schillebeeckx, P.; Schumann, D.; Sekhar, A.; Smith, Andrew; Sosnin, N. V.; Sprung, P.; Stamatopoulos, A.; Tagliente, G.; Taín, J. L.; Tarifeño-Saldivia, A.; Tassan‐Got, L.; Thomas, B.; Torres-Sánchez, P.; Tsinganis, A.; Urlaß, S.; Valenta, S.; Vannini, G.; Variale, V.; Vaz, P.; Ventura, A.; Vescovi, D.; Vlachoudis, V.; Vlastou, R.; Wallner, A.; Woods, P. J.; Wright, T.; Žugec, P.

doi:10.1051/epjconf/202023901008

Cited by 5 publications

(3 citation statements)

References 12 publications

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“…Both telescopes consist of a compact trapezoidal structure, placed at a small angle with respect to the neutron beam and pointing to a polyethylene (C 2 H 4 ) sample, placed in the neutron beam line. The RPTs [236] consist of four independent BC408 plastic scintillators with increasing thickness: 0.5, 3.0, 6.0 and 6.0 cm, each of them is coupled with a 1" PMT, and one of the two telescopes is supplemented by two stages of silicon detectors.…”

Section: N_tof: Identification Of Neutron-induced Elastic Reactionsmentioning

confidence: 99%

Trends in particle and nuclei identification techniques in nuclear physics experiments

et al. 2022

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Particle identification techniques are fundamental tools in nuclear physics experiments. Discriminating particles or nuclei produced in nuclear interactions allows to better understand the underlying physics mechanisms. The energy interval of these reactions is very broad, from sub-eV up to TeV. For this reason, many different identification approaches have been developed, often combining two or more observables. This paper reviews several of these techniques with emphasis on the expertise gained within the current nuclear physics scientific program of the Italian Istituto Nazionale di Fisica Nucleare (INFN).

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Section: N_tof: Identification Of Neutron-induced Elastic Reactionsmentioning

confidence: 99%

Trends in particle and nuclei identification techniques in nuclear physics experiments

et al. 2022

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“…10 and 12). The high energy cross section should be reviewed again when the 235 U cross section from 10 MeV to 1 GeV measured relative to n-p scattering at the CERN n TOF facility [193] is published and added to the EXFOR library. Figures 7 and 9 show that the newly evaluated 238 U high energy cross section is close to the JENDL-4.0/HE cross section.…”

Section: Umentioning

confidence: 99%

EXFOR-based simultaneous evaluation of neutron-induced uranium and plutonium fission cross sections for JENDL-5

Otuka,

Iwamoto

2022

Preprint

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The neutron-induced fission cross sections were simultaneously evaluated for the JENDL-5 library for 233,235 U and 239,241 Pu from 10 keV to 200 MeV and for 238 U and 240 Pu from 100 keV to 200 MeV. Evaluation was performed by least-squares fitting of Schmittroth's roof function to the logarithms of the experimental cross sections and cross section ratios in the EXFOR library. A simultaneous evaluation code SOK was used with its extension to data in arbitrary unit. The outputs of the code were adopted as the evaluated cross sections without any further corrections. The newly obtained evaluated cross sections were compared with the evaluated cross sections in the JENDL-4.0 library and the IAEA Neutron Data Standards 2017. The evaluated cross sections were also validated against the californium-252 spontaneous fission neutron spectrum averaged cross sections, ΣΣ (coupled thermal/fast uranium and boron carbide spherical assembly) neutron spectrum averaged cross sections, and small-sized LANL fast system criticalities. The changes in the obtained evaluated cross sections from those in the JENDL-4.0 library are within 4% ( 241 Pu), 3% ( 233 U, 240 Pu), or 2% ( 235 U, 239 Pu). The newly evaluated 235 U, 238 U and 239 Pu cross sections agree with the IAEA Neutron Data Standards 2017 within 2% with some exceptions.(This is a preprint of N. Otuka and O. Iwamoto, J. Nucl. Sci. Technol., to be published online as an open access article.)

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“…Clearly, the good knowledge of n-p elastic total and differential cross sections are crucial ingredients for a reliable efficiency determination by Monte Carlo simulations and several publications can be found in the literature for its correct implementation (see for instance refs. [15,16]) in Monte Carlo codes such as Geant4 [17,18].…”

Section: Working Principlementioning

confidence: 99%

RIPTIDE: a novel recoil-proton track imaging detector for fast neutrons

et al. 2021

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Neutron detectors are an essential tool for the development of many research fields, as nuclear, particle and astroparticle physics as well as radiotherapy and radiation safety. Since neutrons cannot directly ionize, their detection is only possible via nuclear reactions. Consequently, neutron-based experimental techniques are related to the detection of charged particle or electromagnetic radiation originating from neutron-induced reactions. The study of fast neutrons is often based on the neutron-proton elastic scattering reaction. In this case, the ionization induced by the recoil protons in a hydrogenous material constitutes the basic information for the design and development of neutron detectors. Although experimental techniques have continuously improved and refined, so far, proton-recoil track imaging is still weak in laboratory rate environments because of the extremely small detection efficiency. To address this deficiency, we propose a novel recoil-proton track imaging system in which the light deriving from a fast scintillation signal is used to perform a complete reconstruction in space and time of the event. In particular, we report the idea of RIPTIDE (RecoIl Proton Track Imaging DEtector): an innovative system which combines a plastic scintillator coupled to imaging devices, based on CMOS technology, or micro channel plate sensors. The proposed apparatus aims at providing neutron spectrometry capability by stereoscopically imaging the recoil-protons tracks, correlating the spatial information with the time information. RIPTIDE intrinsically enable the online analysis of the ionization track, thus retrieving the neutron direction and energy, without spoiling the overall efficiency of the detection system. Finally, the spatial and topological event reconstruction enables particle discrimination — a crucial requirement for neutron detection — by deducing the specific energy loss along the track.

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Setup for the measurement of the ²³⁵U(n, f) cross section relative to n-p scattering up to 1 GeV

Cited by 5 publications

References 12 publications

Trends in particle and nuclei identification techniques in nuclear physics experiments

Trends in particle and nuclei identification techniques in nuclear physics experiments

EXFOR-based simultaneous evaluation of neutron-induced uranium and plutonium fission cross sections for JENDL-5

RIPTIDE: a novel recoil-proton track imaging detector for fast neutrons

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Setup for the measurement of the 235U(n, f) cross section relative to n-p scattering up to 1 GeV

Cited by 5 publications

References 12 publications

Trends in particle and nuclei identification techniques in nuclear physics experiments

Trends in particle and nuclei identification techniques in nuclear physics experiments

EXFOR-based simultaneous evaluation of neutron-induced uranium and plutonium fission cross sections for JENDL-5

RIPTIDE: a novel recoil-proton track imaging detector for fast neutrons

Contact Info

Product

Resources

About

Setup for the measurement of the ²³⁵U(n, f) cross section relative to n-p scattering up to 1 GeV