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CERN Accelerating science

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Projects, Upgrade and Consolidation Projects

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2026-04-24
11:25
Correctability of Measured Quadrupole Errors in the New Separation Dipoles on the HL-LHC Optics with a Local Skew Quadrupole Corrector / Dilly, Joschua Werner ; Maclean, Ewen Hamish (CERN) ; Tomas Garcia, Rogelio (CERN)
In this study the correctability of the skew quadrupole field errors, as measured in one of the fabricated separation dipoles for the low-beta* insertion regions of the HL-LHC, by means of a locally installed skew quadrupole magnet is evaluated. [...]
CERN-ACC-NOTE-2026-0005. - 2026
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2026-01-23
14:36
MD10483: Investigations of UFO Release Mechanisms using Displaced Bunches / Ziegler, Philipp Alois (Goethe University Frankfurt (DE)) ; Belanger, Philippe ; Buffat, Xavier (CERN) ; Calvo, Eva (CERN) ; Coco, Victor (CERN) ; Gancarcik, David ; Gonzalez Berges, Manuel (CERN) ; Hernalsteens, Cedric (CERN) ; Holmberg, Johan Alfred ; Hostettler, Michi (CERN) et al.
Interactions of dust grains with the LHC beams cause beam losses that can trigger premature beam aborts or even quenches of superconducting dipoles. [...]
CERN-ACC-NOTE-2024-0039. - 2024
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2025-04-30
10:54
Simulation of the Crab Cavity/Beam Interaction in the HL-LHC / Mastoridis, Themistoklis (California Polytechnic State Univ. University (US)) ; Loe, Trevor (California Polytechnic State University) ; Baudrenghien, Philippe ; Hagmann, Gregoire (CERN)
The High-Luminosity LHC (HL-LHC) will employ crab cavities to increase luminosity. [...]
CERN-ACC-NOTE-2025-0013. - 2025
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2025-04-15
15:07
Impact of Measured Quadrupole Errors in the New Separation Dipoles on the HL-LHC Optics / Dilly, Joschua Werner (CERN) ; Maclean, Ewen Hamish (CERN) ; Tomas Garcia, Rogelio (CERN)
In this study the impact and correctability of the quadrupole field errors, as measured in the newly fabricated separation dipoles for the low-$\beta^*$ insertion regions of the HL-LHC, are evaluated. [...]
CERN-ACC-NOTE-2025-0009. - 2025 - 51.
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2025-04-15
14:54
Impact of Expected Quadrupole Errors in the New Separation Dipoles on the HL-LHC Optics / Dilly, Joschua Werner (CERN) ; Maclean, Ewen Hamish (CERN) ; Tomas Garcia, Rogelio (CERN)
In this study the impact and correctability of the quadrupole field errors, as measured in the newly fabricated separation dipoles for the low-$\beta^*$ insertion regions of the HL-LHC, are evaluated. [...]
CERN-ACC-NOTE-2025-0008. - 2025 - 45.
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2025-04-10
14:19
Comparison of Beam Scattering Between FLUKA and BDSIM in the P42 Beamline / Dyks, Luke Aidan (University of Oxford (GB)) ; Mazzola, Giuseppe (University of Barcelona (ES)) ; Esposito, Luigi Salvatore (CERN) ; Nevay, Laurence James (CERN)
Minimising beam losses along the P42 line in the CERN North Area is an important task necessary for the High-Intensity ECN3 (HI-ECN3) upgrade. Studies to identify the source of losses and to mitigate their impact are ongoing. [...]
CERN-HI-ECN3-REPORT-25-001.- Geneva : CERN, 2025 Fulltext: PDF;

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2025-03-27
06:11
First CERN Cold Masses for the HL-LHC Interaction Regions / Prin, Herve (CERN) ; Axensalva, Jerome (CERN) ; Bampton, Tavis (CERN) ; Bourcey, Nicolas (CERN) ; Devred, Arnaud (CERN) ; Duarte Ramos, Delio Luis (CERN) ; Ferradas Troitino, Jose (CERN) ; Izquierdo Bermudez, Susana (CERN) ; Milanese, Attilio (CERN) ; Pentella, Mariano (CERN) et al.
In the framework of the HL-LHC project, CERN has the responsibility to develop, qualify and assemble three different types of cold masses, namely Q2 (final focus quadrupole in the triplet), CP (corrector package) and D2 (separation dipole). In this paper, we describe the various designs, which incorporate several novel features. [...]
2024 - 5 p. - Published in : IEEE Trans. Appl. Supercond. 34 (2024) 4004805

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2025-02-25
16:56
Consolidation of the 400kA magnetic horn power supply for AD antiproton production / Grawer, Gregor (CERN) ; Boucly, Christophe (CERN) ; Carlier, Etienne (CERN) ; Chanavat, Christophe (CERN) ; Calviani, Marco (CERN) ; Ducimetiere, Laurent Sylvain (CERN) ; Magnin, Nicolas (CERN) ; Namora, Vasco (CERN) ; Senaj, Viliam (CERN)
Abstract—The Antiproton Decelerator (AD) at CERN uses a magnetic horn as a focusing lens to capture particles generated by shooting a proton beam into a target [...]
CERN-ACC-2018-0206. - 2018 - mult..
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2025-02-25
16:51
A multi-waveform pulsed current generator for slow kicker magnets / Grawer, Gregor (CERN) ; Boucly, Christophe (CERN) ; Carlier, Etienne (CERN) ; Cordobes Dominguez, Felipe ; Gharsa, Thierry Paul (CERN) ; Voumard, Nicolas (CERN)
Abstract— In the framework of the LHC Injector Upgrade (LIU) project, the Proton Synchrotron Booster (PSB) at CERN will be upgraded to receive 160 MeV H– beam from the new linear accelerator LINAC4. [...]
CERN-ACC-2018-0205. - 2018 - mult..

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2025-02-18
06:49
CERN Yellow Report Front Cover Status and challenges of Nb$_3$Sn accelerator magnets at CERN : Lessons learned from ITER to HL-LHC / Devred, A
The High-Luminosity Large Hadron Collider (HL-LHC) project at CERN has offered the opportunity to promote and develop various types of enabling accelerator technologies, such as MgB$_2$ superconducting links for cold powering and Nb$_3$Sn accelerator magnets for the interaction regions where the t [...]
CERN-2025-003 - 2025 - 194. (CERN Yellow Reports: Monographs ; 3/2025)


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High Luminosity Large Hadron Collider (HL-LHC) (1,240)
HiLumi LHC (264)
High Intensity ECN3 and the SPS Beam Dump Facility (8)