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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
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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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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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Integrating System Knowledge in Unsupervised Anomaly Detection Algorithms for Simulation-Based Failure Prediction of Electronic Circuits
/ Waldhauser, Felix (CERN ; U. Stuttgart (main)) ; Boukabache, Hamza (CERN) ; Perrin, Daniel (CERN) ; Roesler, Stefan (CERN) ; Dazer, Martin (U. Stuttgart (main))
Machine learning algorithms enable failure prediction of
large-scale, distributed systems using historical time-series
datasets. Although unsupervised learning algorithms represent a possibility to detect an evolving variety of anomalies,
they do not provide links between detected data events and
system failures. [...]
2023 - 8 p.
- Published in : 10.18429/JACoW-ICALEPCS2023-TU1BCO02
Fulltext: PDF;
In : 19th International Conference on Accelerator and Large Experimental Physics Control Systems (ICALEPCS 2023), Cape Town, South Africa, 7 - 13 Oct 2023, pp.249-256
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LHC Triplet Task Force Report
/ Arduini, Gianluigi (CERN) ; Bradu, Benjamin (CERN) ; Brodzinski, Krzysztof (CERN) ; Bruce, Roderik (CERN) ; Cerutti, Francesco (CERN) ; Ciccotelli, Alessia (University of Manchester (GB)) ; Deferne, Guy (CERN) ; Fartoukh, Stephane (CERN) ; Fessia, Paolo (CERN) ; Garion, Cedric (CERN) et al.
The excellent performance of the Large Hadron Collider (LHC) and the extension of Run 3 by one year have led to a significant increase of the expected integrated luminosity by the end of its operation and before the start of the High Luminosity LHC (HL-LHC), exceeding the design LHC integrated luminosity of 300 fb−1 for which the final focus region has been designed. [...]
CERN-ACC-2023-0004.
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2023. - 95 p.
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Run3 Installation Coordination
/ Tock, Jean-Philippe (CERN) ; Bedel, Cyrille Patrick (CERN) ; Bernardini, Marzia (CERN) ; Etheridge, John Robert (CERN) ; Fessia, Paolo (CERN) ; Lambert, Anna (CERN) ; Loertscher, Yves (CERN) ; Masterson, Raoul (Ministere des affaires etrangeres et europeennes (FR)) ; Modena, Michele (CERN) ; Roesler, Stefan (CERN) et al.
After reminding the mandate and the scope of the Run3 Installation Coordinator, the Run3 team members and their respective assignments will be present-ed [...]
CERN-ACC-NOTE-2022-0037.
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2022. - 4 p.
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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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Energy spectra of neutrons penetrating concrete and steel shielding blocks from 24 GeV/c protons incident on thick copper target
/ Lee, Eunji (Kyushu U.) ; Shigyo, Nobuhiro (Kyushu U.) ; Kajimoto, Tsuyoshi (Hiroshima U.) ; Sanami, Toshiya (KEK, Tsukuba ; Sokendai, Tsukuba) ; Nakao, Noriaki (Shimizu, Tokyo) ; Froeschl, Robert (CERN) ; Iliopoulou, Elpida (CERN) ; Infantino, Angelo (CERN) ; Roesler, Stefan (CERN) ; Brugger, Markus (CERN)
In this study, experimental measurements were performed on the spectra of neutrons which penetrate concrete and steel of various thicknesses values when a proton beam of 24 GeV/c was incident on a copper target at the CHARM facility in the East Hall of the CERN Proton Synchrotron (PS) The thicknesses of concrete and steel ranged up to 360 cm and 80 cm, respectively. To measure the neutron spectra, an NE213 scintillator was positioned on the top roof of the shielding structure as the neutron detector. [...]
2021 - 13 p.
- Published in : Nucl. Instrum. Methods Phys. Res., A 998 (2021) 165189
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