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Benchmarking power deposition from fast losses of heavy-ion beams at the onset of LHC Run 3
/ Rodin, Volodymyr (CERN) ; Lechner, Anton (CERN) ; Salvachua, Belen (CERN) ; Mirarchi, Daniele (CERN) ; Esposito, Luigi Salvatore (CERN) ; D'Andrea, Marco (CERN) ; Schoofs, Philippe (CERN) ; Bruce, Roderik (CERN) ; Cai, Rongrong (CERN) ; Morales Vigo, Sara (CERN) et al.
In 2023, the LHC started its Run 3 operation with $^{208}\text{PB}^{82+}$ beams at 6.8 ZTeV, with a substantially higher number of bunches compared to past runs. Several new hardware systems were used operationally for the first time with high-intensity beams, including bent crystal collimators in the betatron cleaning insertion. [...]
2024 - 4 p.
- Published in : JACoW IPAC 2024 (2024) TUPS39
Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.TUPS39
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Assessment of the real part of the impedance of the LHC collimators with instability growth rate measurements
/ Giacomel, Lorenzo (CERN) ; Lindstrom, Bjorn (CERN ; Royal Holloway, U. of London) ; Iadarola, Giovanni (CERN) ; Rumolo, Giovanni (CERN) ; Mounet, Nicolas (CERN) ; Bruce, Roderik (CERN) ; Buffat, Xavier (CERN)
The impedance of the Large Hadron Collider (LHC) is a source of instabilities and has to be monitored closely. It is usually assessed by measuring the tune-shift vs intensity, in particular at top energy where it is the most critical, as the collimators are the closest to the beam. [...]
2024 - 4 p.
- Published in : JACoW IPAC 2024 (2024) THPC57
Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.THPC57
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Optimizations and updates of the FCC-ee collimation system design
/ Broggi, Giacomo (CERN ; Rome U. ; Frascati) ; Abramov, Andrey (CERN) ; André, Kévin (CERN) ; Boscolo, Manuela (Frascati) ; Hofer, Michael (CERN) ; Bruce, Roderik (CERN) ; Redaelli, Stefano (CERN)
The Future Circular electron-positron Collider, FCC-ee, is a design study for a 90 km circumference luminosity-frontier and highest-energy e+e- collider. It foresees four operation modes optimized for producing different particles by colliding high-brightness lepton beams. [...]
2024 - 4 p.
- Published in : JACoW IPAC 2024 (2024) TUPC76
Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.TUPC76
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Progress in the design of the future circular collider FCC-ee interaction region
/ Boscolo, Manuela (Frascati) ; Frasca, Alessandro (CERN) ; Novokhatski, Alexander (SLAC) ; Ciarma, Andrea (Frascati) ; Lechner, Anton (CERN) ; Ilg, Armin (Zurich U.) ; Di Pasquale, Enrico (Frascati) ; Palla, Fabrizio (INFN, Pisa ; CERN) ; Bosi, Filippo (INFN, Pisa) ; Fransesini, Francesco (Frascati) et al.
We report on the latest developments for the FCC-ee interaction region design that represents a major challenge for the collider, which has to achieve extremely high luminosity over a wide range of centre-of-mass energies. The FCC-ee will host four experimental apparatuses. [...]
FERMILAB-CONF-24-0670-PIP2.-
2024 - 4 p.
- Published in : JACoW IPAC 2024 (2024) TUPC67
Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.TUPC67
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Analysis of the performance in the 2023 LHC Pb-Pb run
/ Triantafyllou, Natalia (CERN) ; Bruce, Roderik (CERN) ; Redaelli, Stefano (CERN)
In 2023, the Pb-Pb run in the Large Hadron Collider (LHC) took place during the last five weeks of operation at a record beam energy of 6.8 Z TeV. It marked the first heavy-ion run of Run 3, following a two-day test that took place in 2022 to verify some key machine and beam upgrades. [...]
2024 - 4 p.
- Published in : JACoW IPAC 2024 (2024) TUBD2
Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.TUBD2
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Evolution of special LHC optics configurations Run 3 update
/ Efthymiopoulos, Ilias (CERN) ; Wegscheider, Andreas (CERN) ; Mirarchi, Daniele (CERN) ; Maclean, Ewen (CERN) ; Carlier, Felix (CERN) ; Van der Veken, Frederik (CERN) ; Dilly, Joschua (CERN) ; Le Garrec, Mael (CERN) ; D'Andrea, Marco (CERN ; INFN, Legnaro) ; Solfaroli, Matteo (CERN) et al.
The Large Hadron Collider (LHC) employs special optics and configurations, alongside low-beta* collision optics, to address specific experimental requirements. These include calibrating luminosity monitors (vdM) and facilitating forward physics measurements in TOTEM and ALFA experiments (high-beta). [...]
2024 - 4 p.
- Published in : JACoW IPAC 2024 (2024) MOPC16
Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.MOPC16
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Simulations and experiments for dynamic aperture studies in the LHC ion operation
/ Kostoglou, Sofia (CERN) ; Sterbini, Guido (CERN) ; Bartosik, Hannes (CERN) ; Efthymiopoulos, Ilias (CERN) ; Hostettler, Michi (CERN) ; Bruce, Roderik (CERN)
Dynamic Aperture (DA) studies, based on single-particle tracking simulations including important non-linear fields such as beam-beam effects, have played a crucial role in guiding the operation of the Large Hadron Collider (LHC) in proton-proton collisions. The correspondence between DA computed through simulations and the actual beam lifetime during operation has been established for proton beams through dedicated experiments at the LHC. [...]
2024 - 4 p.
- Published in : JACoW IPAC 2024 (2024) MOPS06
Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.MOPS06
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A new baseline layout for the FCC-hh ring
/ Perez-Segurana, Gustavo (CERN) ; Abramov, Andrey (CERN) ; Zimmermann, Frank (CERN) ; Giovannozzi, Massimo (CERN) ; Benedikt, Michael (CERN) ; Bruce, Roderik (CERN) ; Risselada, Thys (CERN) ; Bartmann, Wolfgang (CERN)
The Future Circular Collider (FCC) study includes two accelerators, a high-energy lepton collider (FCC-ee) and an energy-frontier hadron collider (FCC-hh). Both machines share the same tunnel infrastructure. [...]
2024 - 4 p.
- Published in : JACoW IPAC 2024 (2024) MOPC14
Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.MOPC14
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