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Measurement and simulations of high-energy neutrons through a various thickness of concrete and steel shields using activation detectors at CHARM and CSBF
/ Nakao, Noriaki (Tokyo Inst. Tech.) ; Sanami, Toshiya (KEK, Tsukuba) ; Kajimoto, Tsuyoshi (Hiroshima U.) ; Yashima, Hiroshi (Kyoto Sangyo U.) ; Froeschl, Robert (CERN) ; Bozzato, Davide (CERN) ; Iliopoulou, Elpida (CERN) ; Infantino, Angelo (CERN) ; Lee, Eunji (Kyushu U.) ; Oyama, Takahiro (KEK, Tsukuba) et al.
A shielding experiment using activation detectors was performed at the CERN High-energy AcceleRator Mixed-field (CHARM) facility and the CERN Shielding Benchmark Facility (CSBF). The protons (24 GeV/c) were bombarded into a 50-cm-thick copper target, and the released neutrons were transmitted through various shields located vertically upward from the target. [...]
2023 - 19 p.
- Published in : J. Nucl. Sci. Tech. 61 (2023) 429-447
Fulltext: PDF;
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Measurement of neutron spectra for various thicknesses of concrete and steel shielding at 24-GeV/c proton beam facility using Bonner sphere spectrometer
/ Matsumoto, Tetsuro (AIST, Tsukuba) ; Masuda, Akihiko (AIST, Tsukuba) ; Lee, Eunji (KEK, Tsukuba ; Kyushu U.) ; Sanami, Toshiya (KEK, Tsukuba) ; Oyama, Takahiro (KEK, Tsukuba) ; Kajimoto, Tsuyoshi (Hiroshima U.) ; Nakao, Noriaki (Shimizu, Tokyo) ; Yashima, Hiroshi (Kyoto U.) ; Nagaguro, Seiji (KEK, Tsukuba) ; Uwamino, Yoshitomo (Shimizu, Tokyo) et al.
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. [...]
2024 - 13 p.
- Published in : J. Nucl. Sci. Tech. 61 (2024) 98-110
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3.
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Benchmark Experiments for Bulk and Maze Shielding Using Activation Detectors with 24-GeV/c Protons at CERN/CHARM
/ Nakao, Noriaki (Tokyo U. Marine Sci. Tech.) ; Sanami, Toshiya (KEK, Tsukuba) ; Kajimoto, Tsuyoshi (Hiroshima U.) ; Froeschl, Robert (CERN) ; Bozzato, Davide (CERN ; KIT, Karlsruhe) ; Iliopoulou, Elpida (CERN) ; Infantino, Angelo (CERN) ; Yashima, Hiroshi (Kyoto Sangyo U.) ; Lee, Eunji (KEK, Tsukuba ; Kyushu U., Fukuoka (main)) ; Oyama, Takahiro (KEK, Tsukuba) et al.
Measurements of high-energy neutrons through shield penetration and maze streaming were performed at the Conseil Européen pour la Recherche Nucléaire (CERN) High-energy Accelerator Mixed-Field (CHARM) facility. The protons of 24 GeV/c were injected onto a 50-cm-thick copper target and the released neutrons were transmitted through shields and a maze in the facility. [...]
2024 - 12 p.
- Published in : Nucl. Sci. Eng. 198 (2024) 336-347
Fulltext: PDF;
In : 14th International Conference on Radiation Shielding & 21st Topical Meeting of the Radiation Protection and Shielding Division, Seattle, WA, USA, 25 - 29 Sep 2022, pp.336-347
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4.
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Measurements and Monte Carlo simulations of high-energy neutron streaming through the access maze using activation detectors at 24 GeV/c proton beam facility of CERN/CHARM
/ Nakao, Noriaki (Shimizu, Tokyo) ; Kajimoto, Tsuyoshi (Hiroshima U. (main)) ; Sanami, Toshiya (KEK, Tsukuba) ; Froeschl, Robert (CERN) ; Iliopoulou, Elpida (CERN) ; Infantino, Angelo (CERN) ; Yashima, Hiroshi (Kyoto U. (main)) ; Oyama, Takahiro (KEK, Tsukuba) ; Nagaguro, Seiji (KEK, Tsukuba) ; Lee, Eunji (Kyushu U., Fukuoka (main) ; NCSU, Raleigh) et al.
A measurement of high-energy neutron streaming was performed through a maze at the CERN (Conseil Européen pour la Recherche Nucléaire) High-energy AcceleRator Mixed-field (CHARM) facility. The protons of 24 GeV/c were injected onto a 50-cm-thick copper target and the released neutrons were streamed through a maze with several corridor-legs horizontally designed with the shield walls in the facility. [...]
2021 - 9 p.
- Published in : J. Nucl. Sci. Tech. 58 (2021) 899-907
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Measurements of secondary-particle emissions from copper target bombarded with 24-GeV/c protons
/ Oyama, Takahiro (KEK, Tsukuba) ; Sanami, Toshiya (KEK, Tsukuba) ; Yashima, Hiroshi (Kyoto U., KURRI) ; Hagiwara, Masayuki (KEK, Tsukuba) ; Nakao, Noriaki (Shimizu, Tokyo) ; Infantino, Angelo (CERN) ; Iliopoulou, Elpida (CERN) ; Froeschl, Robert (CERN) ; Roesler, Stefan (CERN) ; Kajimoto, Tsuyoshi (Hiroshima U.) et al.
To devise an activation technique for characterizing mixed radiation fields, secondary particles from a copper target irradiated by 24 GeV/c protons were measured at the CERN High-energy AcceleRator Mixed field facility (CHARM). Activation detector sets consisting of aluminum, niobium, indium, and bismuth, were placed at 30 cm from the target at angles of 15° to 160° with respect to the beam axis. [...]
2021 - 10 p.
- Published in : Nucl. Instrum. Methods Phys. Res., A 990 (2021) 164977
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Characterization of the PTW 34031 ionization chamber (PMI) at RCNP with high energy neutrons ranging from 100 – 392 MeV
/ Theis, C (CERN) ; Carbonez, P (CERN) ; Feldbaumer, E (CERN) ; Forkel-Wirth, D (CERN) ; Jaegerhofer, L (CERN) ; Pangallo, M (CERN) ; Perrin, D (CERN) ; Urscheler, C (CERN) ; Roesler, S (CERN) ; H Vincke (CERN) et al.
Radiation monitoring at high energy proton accelerators poses a considerable challenge due to the complexity of the encountered stray radiation fields. These environments comprise a wide variety of different particle types and span from fractions of electron-volts up to several terra electron-volts. [...]
2017 - 5 p.
- Published in : EPJ Web Conf. 153 (2017) 08018
Fulltext: PDF;
In : 13th International Conference on Radiation Shielding & 19th Topical Meeting of the Radiation Protection & Shielding Division of the American Nuclear Society 2016, Paris, France, 3 - 6 Oct 2016, pp.08018
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7.
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Response measurement of a Bonner sphere spectrometer for high-energy neutrons
/ Masuda, Akihiko (Tsukuba, Natl. Res. Lab. Metrol.) ; Matsumoto, Tetsuro (Tsukuba, Natl. Res. Lab. Metrol.) ; Harano, Hideki (Tsukuba, Natl. Res. Lab. Metrol.) ; Nishiyama, Jun (Tsukuba, Natl. Res. Lab. Metrol.) ; Iwamoto, Yosuke (JAEA, Ibaraki) ; Hagiwara, Masayuki (KEK, Tsukuba) ; Satoh, Daiki (JAEA, Ibaraki) ; Iwase, Hiroshi (KEK, Tsukuba) ; Yashima, Hiroshi (Kyoto U., KURRI) ; Nakamura, Takashi (CYRIC, Tohoku U.) et al.
2012 - 6 p.
- Published in : IEEE Trans. Nucl. Sci. 59 (2012) 161-166
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8.
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Quasi-monoenergetic neutron energy spectra for 246 and 389 MeV (7)Li(p,n) reactions at angles from 0 degrees to 300 degrees
/ Iwamoto, Y (JAEA, Ibaraki) ; Theis, C (CERN) ; Nakamura, T (Tohoku U.) ; Nakashima, H (JAEA, Ibaraki) ; Mares, V (GSF Inst. Strahlensch., Neuherberg) ; Itoga, T (JAERI-RIKEN, Hyogo) ; Matsumoto, T (AIST, Tsukuba) ; Nakane, Y (JAEA, Ibaraki) ; Feldbaumer, E (CERN) ; Jaegerhofer, L (CERN) et al.
The authors measured the neutron energy spectra of a quasi-monoenergetic (7)Li(p,n) neutron source with 246 and 389 MeV protons set at seven angles (0 degrees, 2.5 degrees, 5 degrees, 10 degrees, 15 degrees, 20 degrees and 30 degrees), using a time-of-flight (TOF) method employing organic scintillators NE213 at the Research Center for Nuclear Physics (RCNP) of Osaka University. The energy spectra of the source neutrons were precisely deduced down to 2 MeV at 0 degrees and 10 MeV at other angles. [...]
2011
- Published in : Nucl. Instrum. Methods Phys. Res., A 629 (2011) 43-49
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9.
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Compact EUV Source Based on Laser Compton Scattering between Micro-bunched Electron Beam and CO2 Laser Pulse
/ Kashiwagi, S (Osaka U., ISIR) ; Gowa, T (Waseda U., RISE) ; Isoyama, G (Osaka U., ISIR) ; Kato, R (Osaka U., ISIR) ; Kuroda, R (AIST, Tsukuba) ; Masuda, A (Waseda U., RISE) ; Nomoto, T (Waseda U., RISE) ; Sakaue, K (Waseda U., RISE) ; Urakawa, J (KEK, Tsukuba) ; Washio, M (Waseda U., RISE)
2008 - 3 p.
External link: Published version from JACoW
In : 11th European Particle Accelerator Conference, Genoa, Italy, 23 - 27 Jun 2008, pp.TUPP155
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10.
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Development of Laser System for Compact Laser Compton Scattering X-ray Source
/ Kuroda, R (AIST, Tsukuba) ; Gowa, T (Waseda U., RISE) ; Kashiwagi, S (Osaka U., ISIR) ; Koike, M K (AIST, Tsukuba) ; Masuda, A (Waseda U., RISE) ; Nakajyo, T ; Sakai, F ; Sakaue, K (Waseda U., RISE) ; Toyokawa, H (AIST, Tsukuba) ; Washio, M (Waseda U., RISE) et al.
2008 - 3 p.
External link: Published version from JACoW
In : 11th European Particle Accelerator Conference, Genoa, Italy, 23 - 27 Jun 2008, pp.TUPP158
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