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2025-05-12
16:56
Dechanneling Population at Extreme Crystal Bending with 6.5 TeV Proton Beam / Rossi, Roberto (CERN) ; Mirarchi, Daniele (CERN) ; Redaelli, Stefano (CERN) ; Scandale, Walter (CERN)
Beam measurements with bent crystals, installed in the Large Hadron Collider to assist multistage collimation system, provided information on hadron interactions with crystals in the multi–TeV energy range. In particular, the dechanneling population was observed through scans of deflected halo with collimators. [...]
CERN-EP-DRAFT-MISC-2025-005.- Geneva : CERN, 2025 - 7. Fulltext: PDF;

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2025-05-10
06:26
Magnetic Field and Temperature Scaling of the Critical Current of REBCO Tapes / Succi, G (CERN ; Southampton U.) ; Ballarino, A (CERN) ; Hopkins, S C (CERN) ; Barth, C (CERN) ; Yang, Y (Southampton U.)
High temperature superconductors (HTS) in the form of REBCO (RE1Ba2Cu3O7-δ) coated conductor tapes have undergone, in recent years, major improvement of their transport current properties in high magnetic fields and at liquid helium temperature. The modelling of coils and other applications using REBCO tapes requires accurate characterization and precise knowledge of their properties. [...]
2024 - 7 p. - Published in : IEEE Trans. Appl. Supercond. 34 (2024) 8001007

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2025-05-09
15:45
The evolution of the control system for LEP
CERN-LEP-Controls-Note-110 - 51.


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2025-05-09
11:54
LHC Abort Gap Monitor acquisition system / Pacner, Petr (Brno Tech. U.)
The Beam Dump System of the LHC Large Hadron Collider is one of its critical systems. It is responsible for changing the trajectory of the beam towards the beam dump. [...]
CERN-THESIS-2022-422.- 59 p. Fulltext: PDF; External link: Approve this document (restricted)

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2025-05-09
09:44
MD 9543: Failing IR correctors and novel method to find local errors / Persson, Tobias Hakan Bjorn ; Cardona, Javier Fernando (Universidad Nacional de Colombia (CO)) ; Carlier, Felix Simon (CERN) ; Dilly, Joschua Werner (CERN) ; Kar, Ujani (University of Applied Sciences (DE)) ; Maclean, Ewen Hamish (CERN) ; Tomas Garcia, Rogelio (CERN)
This report presents the outcomes of the Machine Development (MD) 9543, focused on strategies to mitigate the effects of failing Interaction Region (IR) correctors and developing novel techniques for identifying local errors in the Large Hadron Collider (LHC). [...]
CERN-ACC-NOTE-2025-0014. - 2025
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2025-05-08
06:04
Impact of high-intensity LHC beam operation on warm vacuum modules / Antuono, C (CERN) ; Krkotić, P (CERN) ; de la Fuente Garcia, E (CERN) ; Zannini, C (CERN) ; Calatroni, S (CERN) ; Baglin, V (CERN) ; Bregliozzi, G (CERN) ; Chiggiato, P (CERN) ; Galloro, A (CERN) ; Giacomel, L (CERN) et al.
During the third run of the Large Hadron Collider in 2023, which had the highest intensity bunch population compared to previous runs, a beam dump incident with operational delays occurred due to increased losses attributed to pressure spikes within a warm vacuum sector. Subsequent inspections revealed localized annealing and plasticization of the tension spring in the sliding contact radio frequency finger of a 212 mm diameter vacuum module, alongside traces of vapor deposition on the various module components with the stainless steel spring material. [...]
2025 - 12 p. - Published in : Phys. Rev. Accel. Beams 28 (2025) 041001 Fulltext: PDF;

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2025-05-02
04:23
The Muon Collider / International Muon Collider Collaboration
Muons offer a unique opportunity to build a compact high-energy electroweak collider at the 10 TeV scale. [...]
arXiv:2504.21417 ; FERMILAB-PUB-25-0309-AD-PPD-T. - 406.
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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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2025-04-30
05:07
Wakefield regeneration in a resonantly driven plasma accelerator / Farmer, John P. (Munich, Max Planck Inst.) ; Della Porta, Giovanni Zevi (CERN)
Plasma wakefields offer high acceleration gradients, orders of magnitude larger than conventional RF accelerators. However, the achievable luminosity remains relatively low, typically limited by repetition rate and the charge accelerated per shot. [...]
arXiv:2404.14175.- 2025-03-05 - 7 p. - Published in : Phys. Rev. Res. 7 (2025) L012055 Fulltext: PDF;

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2025-04-28
10:55
FLUKA simulation of the AD target area and transfer line / Niang, Samuel (Swansea University (GB)) ; Esposito, Luigi Salvatore (CERN) ; Dutheil, Yann (CERN)
The Antiproton Decelerator (AD) at CERN is a unique facility dedicated to producing, decelerating, and storing low-energy antiprotons. [...]
CERN-ACC-NOTE-2025-0012. - 2025 - 14.
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