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1.
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Dose Rate Effects in Ag-Doped Metaphosphate Glass Radiophotoluminescent Dosimeters Up to MGy Range
/ Aguiar, Y Q (CERN ; Jean Monnet U.) ; Alía, R García (CERN) ; Kranjčević, M (CERN) ; Cecchetto, M (CERN) ; Söderström, D (CERN) ; Mandal, A Raj (Jean Monnet U.) ; Gascon, J (CERN) ; Trummer, J (CERN) ; Vincke, H (CERN) ; Alessi, A (Ec. Polytech., Palaiseau (main)) et al.
2025 - 8 p.
- Published in : IEEE Trans. Nucl. Sci. 72 (2025) 2570-2577
Fulltext: PDF; External links: Fulltext; Fulltext
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Radiological Zoning and Clearance Methodology of activated cables in the LHC accelerator at CERN
/ Dyrcz, Patrycja (CERN) ; Infantino, Angelo (CERN) ; Menaa, Nabil (CERN) ; El-Idrissi, Safouane (CERN) ; Vincke, Heinz (CERN)
In the context of upgrading the Large Hadron Collider (LHC) to its High-Luminosity (HL-LHC) configuration,
it is essential to conduct a thorough zoning classification and characterization of activated cables within the
particle accelerator. To address this need, a methodology was developed to identify regions where materials
can be cleared from regulatory control in compliance with the Swiss Radiation Protection Legislation.
The study begins with optimizing the elemental composition of cables and validating Monte Carlo
FLUKA simulations using high-energy resolution gamma spectrometry (GS) and total gamma counting (TGC)
measurements on 19 copper cable samples, collected during the winter shutdown 2023/2024.
This methodology enables performing radiological zoning and accurately defines the radiological classification of the cables installed in the LHC Points 1 and 5, including both the accelerator tunnel and service
galleries, prior to dismantling.
Finally, the study proposes a conservative scaling factor for cable zoning and introduces a TGC figure of
merit (FOM), representing a conservative activation scenario for the copper cable types..
2025 - 11 p.
- Published in : Appl. Radiat. Isot. 218 (2025) 111692
Fulltext: PDF;
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4.
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Advanced simulation techniques for Radiation Protection studies at the Large Hadron Collider
/ Bozzato, Davide (CERN) ; Dyrcz, Patrycja (CERN) ; Froeschl, Robert (CERN) ; Infantino, Angelo (CERN) ; Lorenzon, Tommaso (CERN) ; Tisi, Marco (CERN) ; Vincke, Heinz (CERN)
The paper provides an overview of the radiation protection challenges and the advanced simulation techniques used to study and plan complex interventions in radiation areas at CERN, particularly with regard to the Large Hadron Collider. The operational radiation protection aspects are supported by state of the art simulations by means of the FLUKA Monte Carlo code and estimates obtained via several tools, used within the CERN Radiation Protection group, such as ActiWiz, SESAME, and the Fluence Conversion Coefficients (FCC) method which extend the built-in FLUKA capabilities. [...]
2024 - 13 p.
- Published in : Radiat. Phys. Chem. 218 (2024) 111573
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5.
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Improvements of the SPS slow extraction electrostatic septum
/ Lackner, Friedrich (CERN) ; Prost, Antoine (CERN) ; Balhan, Bruno (CERN) ; Pirozzi, Fabrizio (CERN) ; Vincke, Helmut (CERN) ; Borburgh, Jan (CERN) ; Kawa, Krzysztof (CERN ; AGH-UST, Cracow) ; Jorat, Louise Olivia (CERN) ; Fraser, Matthew (CERN) ; Roudaut, Noah (CERN ; UTBM, Belfort)
The impact of high-flux protons on the inherent beam loss in the slow extraction straight from SPS towards the North Area has been recently discussed and potential improvements have been proposed. These solutions are mainly aiming to reduce the high component activation and related reduction of lifetime, as well as observed non-straightness in the anode body. [...]
2024 - 4 p.
- Published in : JACoW IPAC 2024 (2024) TUPC72
Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.TUPC72
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6.
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Radiological Characterization Studies for the CNGS Dismantling
/ Ahdida, Claudia (CERN) ; Nowak, Elzbieta (CERN) ; Saury, Christelle (CERN) ; Vincke, Heinz (CERN) ; Vincke, Helmut (CERN)
A comprehensive study of the radiological CNGS (CERN Neutrinos to Gran Sasso Experiment) environment characterization is presented. It comprises the evaluation of the residual dose rates of the most relevant standalone beam line equipment, such as the target and horn, as well as overall dose levels in the cavern before and after dismantling. [...]
2024 - 10 p.
- Published in : Nucl. Sci. Eng. 198 (2024) 175-184
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.175-184
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7.
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Scandium thermal release from activated natTi and natV target materials in mixed particle fields: Investigation of parameters relevant for isotope mass separation
/ Mamis, E (CERN ; Latvia U.) ; Kalnina, P (CERN ; Latvia U.) ; Duchemin, C (CERN) ; Lambert, L (CERN) ; Conan, N (CERN) ; Deschamps, M (CERN) ; Dorsival, A (CERN) ; Froeschl, R (CERN) ; Ruiz, F Ogallar (CERN) ; Theis, C (CERN) et al.
Scandium (Sc) has gained significant interest in nuclear medicine due to its 43Sc, 44g/mSc, and 47Sc radioactive isotopes being suitable for cancer diagnostics and therapy, offering a promising avenue for theranostics. Various production methods, including irradiation of enriched or naturally abundant calcium (Ca), titanium (Ti), and vanadium (V) materials with different particle beams, have been investigated to produce 43Sc, 44g/mSc, and 47Sc. [...]
2024 - 10 p.
- Published in : Nucl. Instrum. Methods Phys. Res., B 553 (2024) 165400
Fulltext: PDF;
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Design and early operation of a new-generation internal beam dump for CERN’s Super Proton Synchrotron
/ Francia, A. Romero (CERN) ; Perillo Marcone, A. (CERN) ; Pianese, S. (CERN) ; Andersen, K. (CERN) ; Izquierdo, G. Arnau (CERN) ; Briz, J.A. (CERN) ; Perez, D. Carbajo (CERN) ; Carlier, E. (CERN) ; Coiffet, T. (CERN) ; Esposito, L.S. (CERN) et al.
The Super Proton Synchrotron (SPS) is the last stage in the injector chain for CERN's Large Hadron Collider, and it also provides proton and ion beams for several fixed-target experiments. The SPS has been in operation since 1976, and it has been upgraded over the years. [...]
arXiv:2312.15485.-
2024-04-01 - 19 p.
- Published in : Phys. Rev. Accel. Beams 27 (2024) 043001
Fulltext: Publication - PDF; 2312.15485 - PDF;
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9.
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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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