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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
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
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
04:29
Charting the luminosity capabilities of the CERN Large Hadron Collider with various nuclear species / Waagaard, E. (EPFL-ISIC, Lausanne ; CERN) ; Bruce, R. (CERN) ; Fernandez, R. Alemany (CERN) ; Bartosik, H. (CERN) ; Jowett, J.M. (CERN ; Darmstadt, GSI) ; Triantafyllou, N. (CERN)
The Large Hadron Collider (LHC) at CERN has been instrumental in recent advances in experimental high energy physics by colliding beams of protons and heavier nuclei at unprecedented energies. The present heavy-ion programme is based mainly on colliding lead nuclei. [...]
arXiv:2508.19653.- 2025-10-24 - 17 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 1083 (2026) 171118 Fulltext: 2508.19653 - PDF; document - PDF;

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2025-10-31
09:38
LETTER OF INTENT: THE FORWARD PHYSICS FACILITY / Boyd, Jamie (CERN) ; Anders, John Kenneth (University of Liverpool (GB)) ; Ariga, Akitaka (Chiba University (JP)) ; Ariga, Tomoko (Kyushu University (JP)) ; Atkinson, Jeremy (Universitaet Bern (CH)) ; Barr, Alan (University of Oxford (GB)) ; Beck, Hans Peter (Universitaet Bern (CH)) ; Bernlochner, Florian Urs (University of Bonn (DE)) ; Bian, Jianming (University of California Irvine (US)) ; Bosco, Silas (Universitaet Bern (CH)) et al.
The Forward Physics Facility (FPF) is a proposed extension of the HL-LHC program designed to exploit the unique scientific opportunities offered by the intense flux of high energy neutrinos, and possibly new particles, in the far-forward direction. Located in a well-shielded cavern 627 m downstream of one of the LHC interaction points, the facility will support a broad and ambitious physics program that significantly expands the discovery potential of the HL-LHC. [...]
CERN-PBC-Notes-2025-010.- Geneva : CERN, 2025 - 96. Fulltext: PDF;

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2025-10-25
18:29
Experience with the CERN LINAC4 and its performance during the first four years of operation / Skowronski, P (CERN) ; Akroh, A (CERN) ; Bielawski, B (CERN) ; Bracco, C (CERN) ; Sargsyan, E (CERN) ; Said, E (CERN) ; Chapuis, F (CERN) ; Asvesta, F (CERN) ; Di Giovanni, G (CERN) ; Bellodi, G (CERN) et al.
Since 2020 LINAC4 provides the protons for the entire CERN accelerator complex. It accelerates H- ions to a kinetic energy of 160 MeV and injects them into the Proton Synchrotron (PS) Booster using a charge exchange injection mechanism. [...]
THPS029.- 2025 - 4 p. - Published in : JACoW IPAC 25 (2025) 3026-3029 Fulltext: PDF; External links: Fulltext; Fulltext
In : International Particle Accelerator Conference (IPAC'25), Taipei, Taiwan, 1-6 June 2025, pp.3026-3029

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2025-10-24
09:17
Machine learning for the anomaly detection and characterization of the 24 GeV/c proton beam at CERN IRRAD Facility / Szumega, Jaroslaw (CERN ; Paris, Ecole des Mines) ; Bougueroua, Lamine (EFREI, Villejuif) ; Gkotse, Blerina (U. Wisconsin, Madison (main) ; CERN ; Paris, Ecole des Mines) ; Jouvelot, Pierre (Paris, Ecole des Mines) ; Ravotti, Federico (CERN) /EA-IRRAD Proton Collaboration
The accurate assessment of beam quality is the most important aspect in the irradiation facilities operation such as IRRAD at CERN. The Beam Profile Monitor (BPM) sensor system developed for the high-intensity proton beam at IRRAD features minimal particle interaction, improved radiation hardness and higher sensitivity and sampling rate than previous systems. [...]
2025 - 4 p. - Published in : JACoW IPAC 25 (2025) 2917-2920 Fulltext: PDF; External links: Fulltext; Fulltext
In : International Particle Accelerator Conference (IPAC'25), Taipei, Taiwan, 1-6 June 2025, pp.2917-2920

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2025-10-24
09:17
Influence of an external static magnetic field on prebreakdown electron emission and heating / Koitermaa, Roni (U. Helsinki (main) ; Tartu U.) ; Toktaganova, Marzhan (U. Helsinki (main)) ; Kyritsakis, Andreas (Tartu U.) ; Tiirats, Tauno (Tartu U.) ; Grudiev, Alexej (CERN) ; Zadin, Veronika (Tartu U.) ; Djurabekova, Flyura (U. Helsinki (main))
High magnetic fields can increase the occurrence of vacuum arcing, suggesting that both electric and magnetic fields can play a role in the vacuum arcing process. [...]
arXiv:2510.09113. - 2025 - 10.
Fulltext

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2025-10-24
09:17
SPARTA: Python-Based Automated Spectral Parameter Analysis and Assessment System for Resonance Tracking / Semiz, Kerem (CERN ; Unlisted, DE ; Berlin, Tech. U.)
Accurately determining resonance frequencies and quality factors (Q) is crucial in accelerator physics and radiofrequency engineering, as these factors have direct impacts on system design, operational stability, and research results. [...]
arXiv:2510.05832. - 2025 - 13.
Fulltext

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