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Projects, Upgrade and Consolidation Projects

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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-NOTE-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..

Detaljnije
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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Detaljnije
2025-02-18
06:48
Transforming Concept into Reality: Overcoming Challenges in the HL-LHC IT String Test Stand Implementation / Bajko, M (CERN) ; Blanchard, S (CERN) ; Bozzini, D (CERN) ; Bruning, O (CERN) ; Garcia, N Heredia (CERN) ; Zerlauth, M (CERN) ; Yammine, S (CERN)
The objective of the High-Luminosity Large Hadron Collider (HL-LHC) Inner Triplet (IT) String is to faithfully represent and validate, within a surface building at CERN, the installation and collective behavior of all major systems in the new HL-LHC IT zone. These systems encompass superconducting magnets, protection, cryogenics for the superconducting magnets and the superconducting link, powering, vacuum, alignment, interconnections between magnets, and the superconducting link itself. [...]
2025 - 5 p. - Published in : IEEE Trans. Appl. Supercond. 35 (2025) 1-5 Fulltext: PDF;

Detaljnije
2025-02-18
06:48
Radiological Zoning and Clearance Methodology of activated cables in the LHC accelerator at CERN / Dyrcz, Patrycja (CERN) ; Infantino, Angelo (CERN) ; Menaa, Nabil (CERN) ; El-Idrissi, Safouane (CERN) ; Vincke, Heinz (CERN)
In the context of upgrading the Large Hadron Collider (LHC) to its High-Luminosity (HL-LHC) configuration, it is essential to conduct a thorough zoning classification and characterization of activated cables within the particle accelerator. To address this need, a methodology was developed to identify regions where materials can be cleared from regulatory control in compliance with the Swiss Radiation Protection Legislation. The study begins with optimizing the elemental composition of cables and validating Monte Carlo FLUKA simulations using high-energy resolution gamma spectrometry (GS) and total gamma counting (TGC) measurements on 19 copper cable samples, collected during the winter shutdown 2023/2024. This methodology enables performing radiological zoning and accurately defines the radiological classification of the cables installed in the LHC Points 1 and 5, including both the accelerator tunnel and service galleries, prior to dismantling. Finally, the study proposes a conservative scaling factor for cable zoning and introduces a TGC figure of merit (FOM), representing a conservative activation scenario for the copper cable types..
2025 - 11 p. - Published in : Appl. Radiat. Isot. 218 (2025) 111692 Fulltext: PDF;

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High Luminosity Large Hadron Collider (HL-LHC) (1,226)
HiLumi LHC (264)
High Intensity ECN3 and the SPS Beam Dump Facility (8)