Measurement of neutron spectra for various thicknesses of concrete and steel shielding at 24-GeV/c proton beam facility using Bonner sphere spectrometer
Rattachement africain : jp, ch. Niveau de preuve : code pays fourni par la source.
Le résumé fourni par la source
Neutron energy spectra down to thermal energy were measured using a Bonner sphere spectrometer (BSS) for various thicknesses of concrete and steel shielding at the CERN/CHARM facility, where high-energy neutrons were produced by 24-GeV/c protons incident on a thick copper target. The thicknesses of the concrete and steel shielding blocks ranged from 40 cm to 200 cm and from 20 cm to 80 cm, respectively. The BSS consisted of a spherical 3He proportional counter and five polyethylene moderators with diameters of 7.62 cm, 10.2 cm, 12.7 cm, 17.8 cm, and 24.1 cm, respectively. In addition, polyethylene moderators combined with a lead or copper inner shell were used to increase the sensitivity to high-energy neutrons. The neutron energy spectra were deduced using an unfolding method. The initial guesses were obtained using the PHITS code for each experimental geometry. The response function for the BSS was determined using the MCNP6.2 code with JENDL-4.0/HE. The neutron energy spectra over the entire energy region from 10−4 eV to 10 GeV were successfully obtained for the different shielding conditions. The validity of the response function and the contribution of each moderator are discussed referring to previous studies and tests at the standard neutron fields of AIST.
Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.
Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.
- Titre Crossref
- Measurement of neutron spectra for various thicknesses of concrete and steel shielding at 24-GeV/c proton beam facility using Bonner sphere spectrometer
- Date Crossref
- 14/11/2023
- Éditeur
- Informa UK Limited
- Type
- journal-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
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National Metrology Institute of Japan pays non établi dans la noticeOrganisme public
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National Institute of Advanced Industrial Science and Technology pays non établi dans la noticeOrganisme public
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Kyushu University Department of Applied Quantum Physics and Nuclear Engineering pays non établi dans la noticeUniversité ou école supérieure
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High Energy Accelerator Research Organization pays non établi dans la noticeStructure de recherche
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Hiroshima University pays non établi dans la noticeUniversité ou école supérieure
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Shimizu (Japan) pays non établi dans la noticeEntreprise
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Kyoto University Institute for Integrated Radiation and Nuclear Science pays non établi dans la noticeUniversité ou école supérieure
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European Organization for Nuclear Research pays non établi dans la noticeStructure de recherche
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Shimizu Corporation pays non établi dans la noticeInstitution
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CERN pays non établi dans la noticeInstitution
National Metrology Institute of Japan, National Institute of Advanced Industrial Science and Technology et Department of Applied Quantum Physics and Nuclear Engineering — Kyushu University, avec 7 autres affiliations.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.