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Accelerator Physics

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2025-05-21
06:01
Elasticity, Plasticity, and Fracture Toughness of REBCO Coated Conductors Characterized via Micromechanical Tests at Room Temperature / Vernassa, G (CERN ; St. Etienne, Ecole des Mines) ; Rusinowicz, M (St. Etienne, Ecole des Mines) ; Kalácska, S (St. Etienne, Ecole des Mines) ; Sao-Joao, S (St. Etienne, Ecole des Mines) ; Bottura, L (CERN) ; Felice, H (IRFU, SPP, Saclay) ; Bordini, B (CERN) ; Bergheau, J M (CNRS, France) ; Kermouche, G (St. Etienne, Ecole des Mines)
REBCO, the leading candidate conductor for ultra high field magnets, is typically produced in the form of thin tapes, consisting of multiple layers of diverse materials with very different natures and properties. Knowledge of the mechanical properties of these different layers is crucial for magnet design. [...]
2025 - 7 p. - Published in : IEEE Trans. Appl. Supercond. 35 (2025) 8400407 Fulltext: PDF;

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2025-05-14
07:01
Design and optimizations of electrostatic low energy intense beam transport for H$^{-}$ ion source in LINAC4 at CERN / Jakhar, Niketan (Nehru U.) ; Kumar, Sarvesh (IUAC, New Delhi) ; Thakur, Chandan (Nehru U.) ; Kashyap, Sandeep (Amity U., Sch. Eng. Tech. ; Indian Inst. Tech., New Delhi) ; Sharma, Jyotsna (Delhi Tech. U.) ; Kashyap, Manish K (Nehru U.) ; Lombardi, Alessandra (CERN)
Abstract The electrostatic low energy beam transport (ELEBT) is used to handle low energy and intense beams from ion sources. It is preferred over magnetostatic low energy beam transport (MLEBT) for many reasons such as compactness, no space charge compensation and no transverse phase space coupling, more beam current handling capacity and less emittance growth as well as beam losses. [...]
2025 - 18 p. - Published in : JINST 20 (2025) P03015 Fulltext: PDF; External links: Fulltext; Fulltext

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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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2025-04-28
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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2025-04-24
10:54
LHC MD #11883: Optics functions determination using luminosity data / Persson, Tobias Hakan Bjorn (CERN) ; Wanczyk, Joanna
Measuring the betatron waist shift in the Large Hadron Collider (LHC) via conventional k-modulation has proven challenging, motivating the need for alternative techniques. [...]
CERN-ACC-NOTE-2025-0010. - 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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2025-04-15
10:58
Improved machine learning models for local optics corrections in the LHC triplet magnets / Kravishvili, Elene
The thesis aims to develop a beam optimization process in LHC, particularly the correction of the triplet magnet at each interaction point [...]
CERN-THESIS-2024-373 - 2024 - 56.


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2025-03-28
10:42
Beam optics in the CERN new 50 MeV Linac / Warner, D J ; Weiss, Μ
CERN-PS-LIN-76-2.- Geneva : CERN, 1976 - 7 p. Fulltext: PDF;

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2025-03-28
10:42
Layout of the long optical lines in CTF3 / Welsch, C P ; Bravin, E ; Lefèvre, T
CTF3-Note-072-Tech.- Geneva : CERN, 2006 - 13 p. Fulltext: PDF;

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