CERN Accelerating science

CERN Published Articles

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2025-10-28
09:22
First laser-ionized europium collection at CERN-MEDICIS / Mancheva, R (CERN ; Leuven U.) ; Bernerd, C (CERN) ; Chrysalidis, K (CERN) ; Cocolios, T E (Leuven U.) ; Duchemin, C (CERN) ; Elle, M (Leuven U.) ; Rossel, R (CERN) ; Van Dingenen, B (Leuven U.)
The MEDICIS facility at CERN aims to produce non-conventional radionuclides towards medical applications. In this work, the first collection of europium-145 (Eu-145) at CERN-MEDICIS is presented, focusing on the development and optimization of a resonance laser ionization scheme to improve isotope extraction efficiency. [...]
2025 - 5 p. - Published in : Nucl. Instrum. Methods Phys. Res., B 569 (2025) 165872

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2025-10-28
09:22
Ending the analogue telephony era / Sierra, Rodrigo (CERN) ; Cosmed, Xoán (CERN) ; Olkhovskyi, Ihor (CERN)
2024 marks not just CERN’s 70th birthday but also the end of analogue telephony at the laboratory. Traditional phone exchanges and the associated copper cabling cannot deliver 21st-century communication services and a decade-long project to modernize CERN’s telephony infrastructure was completed earlier this year. [...]
2025 - 4 p. - Published in : EPJ Web Conf. 337 (2025) 01309 Fulltext: PDF;
In : 27th International Conference on Computing in High Energy & Nuclear Physics (CHEP2024), Kraków, Poland, 19 - 25 Oct 2024, pp.01309

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2025-10-28
09:22
Measurement of the $^{235}$U fission cross section relative to the standard $^{10}$B(n, $ \alpha $) reaction at the CERN n_TOF facility: Results for E$_n< $2 eV / n_TOF Collaboration
The neutron induced fission of 235U is a very important reaction for nuclear technology applications and for the design of future systems to produce clean and safe energy. In addition, it is used as a reference reaction for neutron cross-section measurements, thus, its cross section is needed with a high accuracy over a wide energy range. [...]
2025 - 7 p. - Published in : Appl. Radiat. Isot. 226 (2025) 112063 Fulltext: PDF;

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2025-10-28
09:22
Ultrafast Ce–Mg codoped GAGG garnet single crystal fibers grown by micro-pulling down (μ-PD) technique / Kononets, Valerii (Lyon U.) ; Nehari, Abdeldjelil (Lyon U.) ; Mai, Pavlo (Lyon U.) ; Dujardin, Christophe (Lyon U.) ; Roux, Louis (Lyon U. ; CERN) ; Ledoux, Gilles (Lyon U.) ; Cala, Roberto (CERN ; Milan Bicocca U. (main)) ; Martinazzoli, Loris (CERN) ; Auffray, Etiennette (CERN) ; Gerasymov, Iaroslav (Inst. Scintill. Mat., Kharkiv) et al.
We demonstrate the potential of magnesium (Mg2+) co-doping in Ce3+-doped gadolinium aluminum gallium garnet Gd3(Ga3Al2)O12 (GAGG:Ce) scintillating crystals to obtain a fast decay time performance and the feasibility of μ-PD technique for growing GAGG:Ce,Mg with high dopant concentrations. We demonstrate that Mg2+ co-doping can enhance scintillation kinetics through compositional engineering. [...]
2025 - 8 p. - Published in : Opt. Mater. 169 (2026) 117547

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2025-10-28
09:22
Isoprene chemistry under upper-tropospheric conditions / Russell, Douglas M (Goethe U., Frankfurt (main)) ; Kunkler, Felix (Mainz, Max Planck Inst.) ; Shen, Jiali (U. Helsinki (main)) ; Kohl, Matthias (Mainz, Max Planck Inst.) ; DeVivo, Jenna (Carnegie Mellon U. (main)) ; Bhattacharyya, Nirvan (Carnegie Mellon U. (main)) ; Xenofontos, Christos (Cyprus Inst.) ; Klebach, Hannah (Goethe U., Frankfurt (main)) ; Caudillo-Plath, Lucía (Goethe U., Frankfurt (main)) ; Simon, Mario (Goethe U., Frankfurt (main)) et al.
Isoprene (C$_{5}$H$_{8}$) is the non-methane hydrocarbon with the highest emissions to the atmosphere. It is mainly produced by vegetation, especially broad-leaved trees, and efficiently transported to the upper troposphere in deep convective clouds, where it is mixed with lightning NO$_{x}$. [...]
2025 - 14 p. - Published in : Nature Commun. 16 (2025) 8555 Fulltext: PDF;

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2025-10-28
09:22
Breaking spacetime / Garcia Tello, Pablo (CERN) ; Strong, Imogen (U. Manchester (main))
This note proposes a new interpretation of the hypothesized maximum force in General Relativity by drawing an analogy between spacetime and brittle materials, using Griffiths’ fracture theory at face value. It suggests that the limit for spacetime breakage at the Planck scale naturally leads to the maximum force concept. [...]
2025 - 6 p. - Published in : Eur. J. Phys. 46 (2025) 055602 Fulltext: PDF;

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2025-10-28
09:22
Characterization of the RD50-MPW2 Monolithic CMOS Sensor With the TPA-TCT Technique / Pinto, Francisco Rogelio Palomo (Seville U.) ; Pape, Sebastian (CERN) ; Moll, Michael (CERN) ; Hinojo-Montero, José María (Huelva U.) ; Jiménez-Sánchez, Jorge (Seville U.) ; Powell, Sam (U. Liverpool (main)) ; Vilella, Eva (U. Liverpool (main))
We present the analysis of a monolithic pixel particle detector depleted monolithic active pixel sensor (DMAPS) by the two photon absorption transient current technique (TPA-TCT). The TPA-TCT gives 3-D sensitivity maps with micrometer resolution, enabling the direct measurement of the depletion depth, the 3-D charge collection efficiency (CCE), and the boundaries of the embedded electric field (E-field). [...]
2025 - 8 p. - Published in : IEEE Sensors J. 25 (2025) 34575-34582 Fulltext: PDF;

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2025-10-28
09:22
Simulating cold atomic hydrogen production in linear radiofrequency ion traps / Poljakov, Nikita (Leibniz U., Hannover) ; Sameed, Muhammed (U. Manchester (main) ; CERN) ; Jones, Steven Armstrong (U. Groningen (main) ; Nikhef, Amsterdam)
We simulated the motion of ${\mathrm{BaH^{+}}}$ molecular ions which are sympathetically cooled by laser-cooled ${\mathrm{Ba^{+}}}$ ions in linear quadrupole and octupole radiofrequency (RF) ion traps. By varying the trap voltages, we studied the velocity distribution of hydrogen atoms that would be produced upon threshold photodissociation of the ${\mathrm{BaH^{+}}}$. [...]
2025 - 8 p. - Published in : New J. Phys. 27 (2025) 093203 Fulltext: PDF;

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2025-10-28
09:22
Optimizing cut-based algorithms to specific physics acceptance regions / Huber, Benjamin (CERN ; Vienna, Tech. U.) ; Bortolato, Gabriele (CERN ; U. Padua (main)) ; Leutgeb, Elias (CERN ; Vienna, Tech. U.) ; Rabady, Dinyar (CERN) ; Sakulin, Hannes (CERN) /CMS Collaboration
Developments of the new Level-1 Trigger at CMS for the High-Luminosity operation of the LHC are in full swing. The Global Trigger, the final stage of this new Level-1 Trigger pipeline, is foreseen to evaluate a menu of up to 1000 cut-based trigger algorithms. [...]
2025 - 7 p. - Published in : EPJ Web Conf. 337 (2025) 01128 Fulltext: PDF;
In : 27th International Conference on Computing in High Energy & Nuclear Physics (CHEP2024), Kraków, Poland, 19 - 25 Oct 2024, pp.01128

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2025-10-28
09:22
Interpretable deep learning unlocks high-fidelity prediction for medical radioisotope production / Tang, YanBang (UCAS, Beijing ; CERN)
The efficient and pure production of medical radioisotopes, indispensable for diagnostic imaging and targeted radiotherapy, critically depends on accurate nuclear reaction cross section data. However, traditional physics-based models face limitations from inherent uncertainties and sparse experimental data, hindering optimal production strategies. [...]
2025 - 6 p. - Published in : Appl. Radiat. Isot. 225 (2025) 112110

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