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2025-11-01
06:05
Batch spacing optimization by reinforcement learning / Remta, Matthias (CERN) ; Velotti, Francesco (CERN) ; Rezagholi, Sharwin (Unlisted, AT)
Beams designated for the LHC are injected into the SPS in multiple batches. Given the tight spacing of 200 ns between these batches, the injection kickers have to be precisely synchronized with the injected beam to minimize injection oscillations. [...]
2025 - 13 p. - Published in : Phys. Rev. Accel. Beams 28 (2025) 094603 Fulltext: PDF;

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2025-11-01
06:05
Monitoring of a high temperature superconducting magnet by means of distributed optical fiber sensing / Marcon, Leonardo (U. Padua (main) ; Unlisted, CH) ; Castaldo, Bernardo (CERN) ; Chiuchiolo, Antonella (CERN ; INFN, Salerno) ; Van Nugteren, Jeroen (CERN ; Unlisted, CH) ; Bajas, Hugues (CERN) ; Kirby, Glyn (CERN) ; Galtarossa, Andrea (U. Padua (main)) ; Bajko, Marta (CERN) ; Palmieri, Luca (U. Padua (main))
Distributed optical fiber sensor is a unique technology that offers unprecedented advantages and performance especially in those experimental fields where the environmental harshness limits the applicability of standard sensors. By measuring the faint light backscattered by the fiber in response to a well-tailored probing signal, distributed sensors allow mapping the variation of physical parameters along the fiber path with high spatial resolution. [...]
2025 - 8 p. - Published in : Opt. Laser Technol. 192 (2025) 113767 Fulltext: PDF;

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2025-11-01
06:05
Modern signal processing techniques for efficient transverse feedback systems operation in hadron accelerators / Kotzian, Gerd (CERN) ; Buffat, Xavier (CERN) ; Komppula, Jani (CERN) ; Stopjakova, Viera (Bratislava, Slovak Tech. U.) ; Valuch, Daniel (CERN ; Bratislava, Slovak Tech. U.)
Transverse feedback systems are essential for stable operation of all hadron accelerators with high intensity beams. An important component of such a system is a powerful digital signal processing unit. [...]
2025 - 17 p. - Published in : Phys. Rev. Accel. Beams 28 (2025) 102801 Fulltext: PDF;

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2025-11-01
06:05
Performance and Reliability Evaluation of Nb$_{\text{3}}$Sn MQXFB Quadrupoles for the HL-LHC at Midpoint Production / Mangiarotti, F J (CERN) ; Willering, G (CERN) ; Duarte Ramos, D (CERN) ; Fiscarelli, L (CERN) ; Izquierdo Bermudez, S (CERN) ; Juberg, S (CERN) ; Milanese, A (CERN) ; Ninet, G (CERN) ; Pichon, G (CERN) ; Prin, H (CERN) et al.
At the heart of the High-Luminosity Project (HL-LHC) to upgrade the CERN Large Hadron Collider (LHC), new Nb 3 Sn superconducting quadrupole magnets will be installed on each side of the ATLAS and CMS experiments. Half of these magnets are built by CERN and are called MQXFB. [...]
2026 - 5 p. - Published in : IEEE Trans. Appl. Supercond. 36 (2026) 4000605 Fulltext: PDF; External link: Fulltext

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2025-11-01
06:05
Large-scale simulations of lattice QCD for nucleon structure using Nf=2+1+1 flavors of twisted mass fermions / Alexandrou, C (Cyprus U. ; Cyprus Inst.) ; Bacchio, S (Cyprus Inst.) ; Chacon, L (Cyprus Inst.) ; Finkenrath, J (CERN) ; Garofalo, M (Bonn U., HISKP) ; Iona, C (Cyprus U.) ; Kostrzewa, B (Bonn U., HISKP) ; Koutsou, G (Cyprus Inst.) ; Li, Y (Cyprus U.) ; Pittler, F (Cyprus Inst.) et al.
Understanding the internal structure of protons and neutrons is a fundamental challenge in nuclear physics that requires both theoretical and computational advances. In this work, we present results from large-scale lattice Quantum Chromodynamics (QCD) simulations performed on European supercomputing facilities to calculate key nucleon structure quantities. [...]
2025 - 10 p. - Published in : Procedia Comput. Sci. 267 (2025) 92-101 Fulltext: PDF;

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2025-11-01
06:05
First observation of the η→4μη→4μ decay with the CMS detector / Rossin, Roberto (UC, Santa Barbara (main)) /CMS Collaboration
The first observation of the rare $\eta \to \mu^+\mu^-\mu^+\mu^-$ double-Dalitz decay is presented. The analysis is based on data collected by the CMS experiment at the CERN LHC operating at the centre-of-mass energy of $\sqrt{s}=13\, {\rm TeV}$. [...]
2025 - 8 p. - Published in : PoS QCHSC24 (2025) 142 Fulltext: PDF;
In : 16th Conference on Quark Confinement and the Hadron Spectrum, Cairns, Australia, 19 - 24 Aug 2024, pp.142

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2025-11-01
06:05
A scalable implementation of a 3D magnetic Hall sensor card for mapping and monitoring applications / Messner, Lukas (CERN ; Innsbruck U.) ; Pacifico, Nicola (CERN) ; Baumgarten, Daniel (Innsbruck U.) ; Dumps, Raphael (CERN)
High-energy physics experiments make use of large magnets tobend particle trajectories and thus allow theiridentification. These magnets, very often custom-built, necessitatean accurate mapping of the generated magnetic field and, in somecases, online monitoring. [...]
2025 - 15 p. - Published in : JINST 20 (2025) P09003 Fulltext: PDF;

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2025-11-01
06:05
New simulation of the CERN Gamma Irradiation Facility (GIF++) / Ferrara, N (Bari U. ; INFN, Bari) ; Iaselli, G (Bari U. ; INFN, Bari) ; Pugliese, G (Bari U. ; INFN, Bari) ; Ramos, D (Bari U. ; INFN, Bari) ; Lakshmaiah, U (Bari U. ; INFN, Bari)
The simulation of the GIF++ facility at CERN has been updated to consider the experimental area that was upgraded in 2015. A new geometry was implemented in the Geant4 simulation code to calculate dose and flux distributions in the bunker. [...]
2025 - 3 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 1080 (2025) 170724 Fulltext: PDF;
In : 17th International Conference on Resistive Plate Chambers and Related Detectors, Santiago de Compostela, 09 - 13 Sep 2024, pp.170724

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2025-11-01
06:05
Threshold for loss of Landau damping in double-harmonic rf systems / Intelisano, Leandro (CERN) ; Damerau, Heiko (CERN) ; Karpov, Ivan (CERN)
The loss of Landau damping (LLD) can lead to beam quality degradation in single- and multi-bunch beams in synchrotrons. In the longitudinal plane, the LLD threshold is increased by reducing the beam-coupling impedance, applying controlled emittance blowup, or employing higher-harmonic rf systems. [...]
2025 - 17 p. - Published in : Phys. Rev. Accel. Beams 28 (2025) 104402 Fulltext: PDF;

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2025-11-01
06:05
ELDRS in a Commercial 28-nm CMOS Technology / Borghello, Giulio (CERN) ; Termo, Gennaro (CERN ; Ecole Polytechnique, Lausanne) ; Faccio, Federico (CERN) ; Ceresa, Davide (CERN) ; Pejašinović, Risto (CERN) ; Bergamin, Gianmario (CERN) ; Diaz, Francisco Piernas (CERN) ; Kloukinas, Kostas (CERN)
Evidence of enhanced low-dose-rate sensitivity (ELDRS) in total ionizing dose (TID)-induced leakage current increase was observed in ring oscillators (ROs) and static random access memories (SRAMs) in 28-nm CMOS technology exposed to ultrahigh doses. Elevated temperature irradiation on isolated devices is used to evaluate the dependence of ELDRS on bias conditions, device size, and threshold voltage. [...]
2025 - 10 p. - Published in : IEEE Trans. Nucl. Sci. 72 (2025) 2276-2285

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