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HL-LHC Conference Papers

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2025-08-29
06:05
Long term aging studies of the new PMTs for the HL-LHC ATLAS hadronic calorimeter upgrade / Chiarelli, G (INFN, Pisa) ; Leone, S (INFN, Pisa) ; Scuri, F (INFN, Pisa)
TileCal, the central hadron calorimeter of the ATLAS experiment at the Large Hadron Collider (LHC), is readout by about 10,000 photomultipliers (PMTs). Earlier studies for the performance showed a degradation in PMT response as a function of the integrated anode current. [...]
PoS (TIPP2023) 108.- 2025 - 6 p. - Published in : PoS TIPP2023 (2025) 108 Fulltext: PDF;
In : 6th International Conference on Technology and Instrumentation in Particle Physics (TIPP 2023), Cape Town, Western Cape, South Africa, 4 - 8 Sep 2023, pp.108

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2025-08-14
06:21
Proton Beam Dynamics for Concurrent Operation of the LHeC and HL-LHC / André, K D J (CERN) ; Holzer, B J (CERN) ; Forthomme, L (AGH-UST, Cracow) ; Witzleben, T v (CERN ; RWTH Aachen U.) /LHeC study Group Collaboration
The Large Hadron electron Collider (LHeC) project is studying a new LHC interaction region fordeep inelastic scattering collisions between electrons and hadrons in the TeV energy scale. Anintense 50 GeV lepton beam is brought into collision with one 7 TeV hadron beam from CERN’sLarge Hadron Collider in parallel to the hadron-hadron operation. [...]
2025 - 4 p. - Published in : PoS ICHEP2024 (2025) 850 Fulltext: PDF;
In : 42nd International Conference on High Energy Physics (ICHEP 2024), Prague, Czech Republic, 18 - 24 Jul 2024, pp.850

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2025-07-09
11:42
Preparing ATLAS for the high-luminosity LHC: system testing and performance evaluation of the ITk Strip detector / Toldaiev, O (Indiana U.) ; Trischuk, D (Brandeis U.) ; Arling, J H (DESY) /ATLAS ITk Strips Collaboration
The new ATLAS Inner Tracker (ITk) will replace the current tracking system in ATLAS to cope with the challenging conditions during the high-luminosity phase of the Large Hadron Collider. ITk is an all-silicon detector consisting of a pixel inner tracker and a silicon microstrip outer tracker. [...]
2025 - 11 p. - Published in : JINST 20 (2025) C05004 Fulltext: PDF;
In : 25th international Workshop on Radiation Imaging Detectors (iWoRiD2024), Lisbon, Portugal, 30 Jun - 4 Jul 2024, pp.C05004

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2025-07-08
10:02
Advances in transverse beam halo characterization and implications for HL-LHC / Rakic, M (CERN ; Ecole Polytechnique, Lausanne) ; Hermes, P (CERN) ; Redaelli, S (CERN) ; Seidel, M (PSI, Villigen)
Measurements of the transverse beam halo in the LHC showed that it contains a non-negligible portion of the total stored beam energy, with implications for both collimation system performance and overall machine protection. [...]
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JACoW - Full text

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2025-07-08
10:02
High Luminosity LHC Optics Feasibility Studies for: ATLAS, ALICE, and LHCb / Patel, Pragati (Cracow, INP) ; Trzebiński, Maciej (Cracow, INP)
Properties of proton trajectories along the High Luminosity LHC beam-line in the vicinity of ATLAS, ALICE, and LHCb interaction points are discussed. Based on this, possible locations of forward proton detectors in the vicinity of these experiments were identified. [...]
2024 - 6 p. - Published in : Acta Phys. Pol. B Proc. Suppl. 17 (2024) 5-A30 External link: Fulltext
In : 30th Cracow Epiphany Conference on Precision Physics at High Energy Colliders: dedicated to the memory of Staszek Jadach (Epiphany 2024), Cracow, Poland, 8 - 12 Jan 2024, pp.5-A30

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2025-05-21
06:01
Development, Fabrication & Test of the Round, Multi-Layer REBCO Cables of the Cold Powering Systems of the HL-LHC / Barth, C (CERN) ; Saba, A (CERN) ; Leclercq, Y (CERN) ; Ballarino, A (CERN)
The magnets of the High Luminosity Upgrade of the Large Hadron collider (HL-LHC) will be electrically connected through Cold Powering Systems incorporating superconducting, 100 kA class, power transmission lines to direct current power converters in service galleries. These transmission lines or ‘Superconducting Links’ are based on multi-circuit magnesium di-boride ($\text{MgB}_{2}$) cables in 74.5–120 m long flexible cryostats. [...]
2025 - 5 p. - Published in : IEEE Trans. Appl. Supercond.
- Published in : IEEE Trans. Appl. Supercond.
In : Applied Superconductivity Conference (ASC 2024), Salt Lake City, Utah, United States, 1 - 6 Sep 2024, pp.4801605

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2025-05-21
06:01
Project Quality Management for the HL-LHC IT String / Garcia, Nicolas Heredia (CERN) ; Bajko, Marta (CERN) ; Blanchard, Sebastien (CERN) ; Bozzini, Davide (CERN) ; Brüning, Oliver (CERN) ; Gavela, Hector Garcia (CERN) ; Humbria, Victor Guillen (CERN) ; Kosmicki, Antoine (CERN) ; Fernandez, Estrella Vergara (CERN) ; Yammine, Samer (CERN) et al.
This article explores the project management quality standards required for leading complex technical projects involving state-of-the art superconducting technologies, diverse stakeholders and extensive installation, commissioning, and quality assurance/ control activities. Specifically, it presents the project management framework – including processes and best practices – implemented for the High-Luminosity Large Hadron Collider (HL-LHC) Inner Triplet (IT) String test stand at CERN. [...]
2025 - 6 p. - Published in : IEEE Trans. Appl. Supercond.
- Published in : IEEE Trans. Appl. Supercond.
In : Applied Superconductivity Conference (ASC 2024), Salt Lake City, Utah, United States, 1 - 6 Sep 2024, pp.4003506

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2025-05-21
06:01
Status of High-Field Rutherford Cable Production for the HL-LHC Project / Fleiter, J (CERN) ; Bonasia, A (CERN) ; Hopkins, S C (CERN) ; Boutboul, T (CERN) ; Ballarino, A (CERN)
The High-Luminosity upgrade of the Large Hadron Collider (HL-LHC) is underway at CERN. The upgrade will rely, among other magnets, on the inner triplet quadrupoles (MQXF). [...]
2025 - 5 p. - Published in : IEEE Trans. Appl. Supercond.
- Published in : IEEE Trans. Appl. Supercond.
In : Applied Superconductivity Conference (ASC 2024), Salt Lake City, Utah, United States, 1 - 6 Sep 2024, pp.4801505

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2025-02-01
06:02
Prospects for light-ion operation at the HL-LHC: machine developments and physics opportunities / Alemany Fernandez, Reyes (CERN)
In recent years, the interest of the ion-physics community for conducting experiments at the CERN Accelerator Complex with lighter ions than lead has increased significantly. This has motivated the creation of the Future Ions Working Group in the CERN Accelerator and Technical Sector whose mandate is to define future ion operation needs based on the requests from LHC and fixed target experiments and their implications for the Ion Accelerator Complex. [...]
2025 - 6 p. - Published in : PoS LHCP2024 (2025) 335 Fulltext: PDF;
In : 12th Edition of the Large Hadron Collider Physics Conference (LHCP2024), Boston, United States, 3 - 7 Jun 2024, pp.335

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2024-12-18
06:05
Evolving the LHCOPN and LHCONE networks to support HL-LHC computing requirements / Martelli, Edoardo (CERN)
The LHCOPN network, which links CERN to all the WLCG Tier 1s, and the LHCONE network, which connects WLCG Tier1s and Tier2s, have successfully provided the necessary bandwidth for the distribution of the data generated by the LHC experiments during first two runs of the LHC accelerator. We give here an overview of the most significant achievements and the current state of the two networks. [...]
2024 - 8 p. - Published in : EPJ Web Conf. 295 (2024) 07016 Fulltext: PDF;
In : 26th International Conference on Computing in High Energy & Nuclear Physics, Norfolk, Virginia, Us, 8 - 12 May 2023, pp.07016

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