2026-01-20
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2026-01-20
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Filling pattern with non-uniform bunch spacing to mitigate e-cloud for the FCC-ee
/ Sabato, Luca (Ecole Polytechnique, Lausanne ; CERN) ; Iadarola, Giovanni (CERN) ; Mether, Lotta (CERN) ; Pieloni, Tatiana (Ecole Polytechnique, Lausanne ; CERN) ; Zobov, Mikhail (Frascati)
The Future Circular Collider (FCC) study is developing designs for higher performance particle colliders that could follow on from the Large Hadron Collider once it reaches the end of its high-luminosity phase. In particular, the FCC-ee is a proposed electron-positron collider that may face challenges from the electron cloud (e-cloud). [...]
2025 - 4 p.
- Published in : JACoW IPAC 2025 (2025) WEPS051
Fulltext: PDF;
In : International Particle Accelerator Conference (IPAC'25), Taipei, Taiwan, 1-6 June 2025, pp.WEPS051
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2026-01-20
06:55 |
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2026-01-20
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2026-01-20
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Impact of collective effects on beam stability in the FCC-ee main rings and the high-energy booster
/ Ghribi, Adnan (GANIL ; U. Caen (main)) ; Mashal, Ahmad (IPM, Tehran) ; Chance, Antoine (Saclay) ; Dalena, Barbara (Saclay) ; Zannini, Carlo (CERN) ; Gibellieri, Dora (CERN ; U. Caen (main)) ; Migliorati, Mauro (INFN, Rome ; U. Rome La Sapienza (main)) ; Zobov, Mikhail (Frascati) ; Bruant, Quentin (Saclay)
The electron positron Future Circular Collider (FCC-ee) is considered the primary contender for the next major particle accelerator within the European Strategy for particle physics, aiming to achieve unprecedented luminosities to enable precise measurements of Z, W, and H bosons along with the top quark. Despite its potential, the FCC-ee project faces significant operational and design challenges, especially in managing collective effects such as space charge, wake fields, coherent synchrotron radiation, intra-beam scattering, and beam-beam interactions. [...]
2025 - 4 p.
- Published in : JACoW IPAC 2025 (2025) MOPM030
Fulltext: PDF;
In : International Particle Accelerator Conference (IPAC'25), Taipei, Taiwan, 1-6 June 2025, pp.MOPM030
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2026-01-20
06:55 |
Simulation of machine-induced background to ALICE in the 2023 LHC ion run
/ Guerin, Helene (CERN) ; Ferrero Colomo, Alvaro (CERN) ; Lechner, Anton (CERN) ; Oppedisano, Chiara (INFN, Turin) ; Andrea, Ferrero (IRFU, Saclay, DPP) ; Cerutti, Francesco (CERN) ; Otwinowski, Jacek (Cracow, INP) ; Esposito, Luigi Salvatore (CERN) ; Danisch, Meike (CERN) ; Kurashvili, Podist (Lodz, IPJ) et al.
During the 2023 ion run at the LHC, where crystal collimation was regularly adopted for the first time, strong background levels were observed at the Inner Tracking System (ITS) of the ALICE detector. Some of the readout chips became saturated, causing losses of angular acceptance. [...]
2025 - 4 p.
- Published in : JACoW IPAC 2025 (2025) MOPS138
Fulltext: PDF;
In : International Particle Accelerator Conference (IPAC'25), Taipei, Taiwan, 1-6 June 2025, pp.MOPS138
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2026-01-20
06:55 |
Beam-based alignment techniques for the FCC-ee
/ Goffing, Christian (CERN) ; Mueller, Anke-Susanne (KIT, Karlsruhe) ; Zimmermann, Frank (CERN) ; Keintzel, Jacqueline (CERN) ; Reissig, Micha (KIT, Karlsruhe)
The Future electron-positron Circular Collider (FCC-ee) is a proposed lepton collider for high-energy particle physics succeeding the Large Hadron Collider (LHC). Its ambitious design goals demand excellent orbit and optics control and, therefore, set strict limits on alignment tolerances. [...]
2025 - 4 p.
- Published in : JACoW IPAC 2025 (2025) MOPM109
Fulltext: PDF;
In : International Particle Accelerator Conference (IPAC'25), Taipei, Taiwan, 1-6 June 2025, pp.MOPM109
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2026-01-20
06:54 |
High Luminosity LHC collimation system performance for different optics configurations
/ Lindstrom, Bjorn (CERN ; Royal Holloway, U. of London) ; Donadon Servelle, André (CERN) ; Zielińska, Marta (Warsaw U. of Tech. (main)) ; De Maria, Riccardo (CERN) ; Bruce, Roderik (CERN) ; Redaelli, Stefano (CERN) ; Gibson, Stephen (Royal Holloway, U. of London)
The High Luminosity Large Hadron Collider (HL-LHC) presents significant collimation challenges due to its high stored beam energy. An effective collimation system is critical for ensuring stable operation, protecting the superconducting magnets and minimizing background to the experiments. [...]
2025 - 4 p.
- Published in : JACoW IPAC 2025 (2025) MOPS029
Fulltext: PDF;
In : International Particle Accelerator Conference (IPAC'25), Taipei, Taiwan, 1-6 June 2025, pp.MOPS029
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2026-01-20
06:54 |
3Qy resonance correction at LHC injection
/ Maclean, Ewen (CERN) ; Paraschou, Konstantinos (CERN) ; Tomas, Rogelio (CERN) ; Persson, Tobias (CERN) ; Le Garrec, Mael (CERN) ; Dilly, Joschua (CERN) ; Carlier, Felix (CERN) ; Horney, Sasha (CERN) ; Ferrentino, Vittorio (CERN) ; Van Goethem, Wietse (CERN) et al.
Compensation of the 3Qy resonance at injection energy in the LHC is of significant interest, given its potential to degrade the lifetime of high-intensity beams. In the absence of dedicated corrector circuits for the 3Qy compensation of each beam at low energy, an alternative approach is needed. [...]
2025 - 4 p.
- Published in : JACoW IPAC 2025 (2025) WEPM008
Fulltext: PDF;
In : International Particle Accelerator Conference (IPAC'25), Taipei, Taiwan, 1-6 June 2025, pp.WEPM008
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2026-01-20
06:54 |
New analysis tools for LHC aperture measurements
/ Orwat, Marta (CERN) ; Hermes, Pascal (CERN) ; Bruce, Roderik (CERN)
Aperture measurements at the Large Hadron Collider (LHC) are routine procedures conducted during the early stages of beam commissioning, prior to the injection of high-intensity beams. This is to ensure that the aperture, defining the clearance for the circulating beams, is protected by the LHC collimation system. [...]
2025 - 4 p.
- Published in : JACoW IPAC 2025 (2025) THPB086
Fulltext: PDF;
In : International Particle Accelerator Conference (IPAC'25), Taipei, Taiwan, 1-6 June 2025, pp.THPB086
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