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Design and Optimization of a 4 Tesla 200 mm Aperture Helium-Free Nb-Ti Nested CCT Quadrupole/Dipole Superconducting Magnet
/ Kirby, Glyn (CERN ; Huelva U.) ; Deelen, N (Unlisted, NL) ; Iziquel, A (Unlisted, FR) ; Nugteren, J Van (Unlisted, NL) ; Page-Mason, E (Nottingham U.) ; Martins, D (PSI, Villigen) ; Berjillos, R (Huelva U.) ; Ramos, C Garcia (Huelva U.) ; Cordero, C A Gonzales (Huelva U.) ; Junquera, T (Unlisted, FR) et al.
This paper presents the design and optimization of a low-weight helium-free Nb-Ti CCT superconducting magnet (MAGDEM – MAGent DEMonstrator) for the R&D; phase of the ISOLDE Superconducting Recoil Separator (ISRS) at CERN (Geneva, Switzerland). The system can be expanded to other accelerator applications demanding compact lightweight superconducting magnets, such as medical hadron therapy systems. [...]
2025 - 7 p.
- Published in : IEEE Trans. Appl. Supercond. 35 (2025) 4002307
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Status of the search for a muon EDM using the frozen-spin technique
/ muEDM Collaboration
Despite the many successes of the Standard Model of particle physics, there are stillseveral physical observations that it cannot explain, such as the matter-antimatter asymmetry,non-zero neutrino masses, and the microscopic nature of dark matter. To address these limitations,extensions to the standard model are necessary, and searches for electric dipole moments (EDMs) ofleptons are valuable test. [...]
2023 - 6 p.
- Published in : JINST
Fulltext: PDF;
In : New Frontiers in Lepton Flavor 2023 (NeFLe 2023), Pisa, Italy, 15 - 17 May 2023, pp.C09003
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Beam coupling impedance of the main extraction kickers in the CERN PS
/ Neroni, M (CERN ; U. Rome La Sapienza (main)) ; Barnes, M J (CERN) ; Lasheen, A (CERN) ; Mostacci, A (U. Rome La Sapienza (main)) ; Popovic, B (Argonne) ; Vollinger, C (CERN)
In view of the High Luminosity (HL) upgrade of the LHC, thebeam intensity must be doubled in the injector chain. To performreliable beam dynamics simulations, the beam coupling impedance inthe injectors, such as the Proton Synchrotron (PS), must be followedclosely by including all contributing elements into the impedancemodel. [...]
2024 - 12 p.
- Published in : JINST 19 (2024) T08001
Fulltext: PDF;
In : 68th ICFA Advanced Beam Dynamics workshop on high-Intensity and High-Brightness Hadron Beams (HB 2023), CERN, Geneva, Switzerland, 9 - 13 Oct 2023, pp.T08001
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High voltage consolidation of the temperature measurement channels of the LHC superconducting current leads
/ Trikoupis, N (CERN) ; Casas-Cubillos, J (CERN) ; Bustamante, E (CERN)
Recurrent dielectric breakdowns on the cryogenics instrumentation during the CERN LHC Electrical Quality Assurance (ELQA) campaigns led to an investigation of their root causes. During the CERN Long Shutdown 2 (LS2), several weaknesses were identified like floating wires or cable screens, cabling non-conformities, connector assembly issues, and weakness of the electronic conditioning cards. [...]
2023 - 8 p.
- Published in : JINST 18 (2023) C02010
In : Topical Workshop on Electronics for Particle Physics 2022 (TWEPP 2022), Bergen, Norway, 19 - 23 Sep 2022, pp.C02010
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Radiation test of commercial of the shelf (COTS) optical transceivers in the frame of the beam position monitor (BPM) consolidation project for the Large Hadron Collider (LHC)
/ Marin, M Barros (CERN) ; Boccardi, A (CERN) ; Ozdogan, S Can (CERN) ; Danzeca, S (CERN) ; Ferraro, R (CERN) ; Scialdone, A (CERN)
The consolidation of the Large Hadron Collider (LHC) beam position monitor (BPM) requires the deployment of about 5000 single-mode radiation-tolerant optical transmitters, working at 10 Gbps during 20 years of operation. While the use of the custom devices being designed at CERN remains the baseline for the project, 8 commercial of the shelf (COTS) optical transceivers have been evaluated as an alternative. [...]
2024 - 9 p.
- Published in : JINST 19 (2024) C03040
Fulltext: PDF;
In : Topical Workshop on Electronics for Particle Physics 2023 (TWEPP 2023), Geremeas, Sardinia, Italy, 1 - 6 Oct 2023, pp.C03040
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Impact of beam-coupling impedance on the Schottky spectrum of bunched beam
/ Lannoy, C (CERN ; LPHE, Lausanne) ; Lasocha, K (CERN) ; Pieloni, T (LPHE, Lausanne) ; Alves, D (CERN) ; Mounet, N (CERN)
The Schottky monitors of the Large Hadron Collider (LHC) canbe used for non-invasive beam diagnostics to estimate various bunchcharacteristics, such as tune, chromaticity, bunch profile orsynchrotron frequency distribution. However, collective effects, inparticular beam-coupling impedance, can significantly affectSchottky spectra when large bunch charges are involved. [...]
2024 - 21 p.
- Published in : JINST 19 (2024) P03017
Fulltext: PDF;
In : 68th ICFA Advanced Beam Dynamics workshop on high-Intensity and High-Brightness Hadron Beams (HB 2023), CERN, Geneva, Switzerland, 9 - 13 Oct 2023, pp.P03017
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Quench Protection of the HL-LHC Hollow Electron Lens Superconducting Solenoid Magnets
/ Wozniak, Mariusz (CERN) ; Foussat, Arnaud (CERN) ; Yammine, Samer (CERN) ; Steckert, Jens (CERN) ; Ravaioli, Emmanuele (CERN) ; Verweij, Arjan (CERN) ; Kolehmainen, Antti (CERN) ; Redaelli, Stefano (CERN) ; Rossi, Adriana (CERN)
The High-Luminosity LHC (HL-LHC) project is an upgrade of the Large Hadron Collider (LHC) and comprises the installation of two Hollow Electron Lens (HEL) systems, each acting on one beam on both sides of LHC Point 4. The systems aim for a controlled depletion of hadron beam tails and an enhanced hadron beam halo collimation. [...]
2022 - 5 p.
- Published in : IEEE Trans. Appl. Supercond. 32 (2022) 4701205
In : 27th International Conference on Magnet Technology (MT-27), Fukuoka, Japan, 15 - 19 Nov 2021, pp.4701205
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