1.
|
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
|
|
2.
|
First results of running the LHC with lead ions at a beam energy of 6.8 Z TeV
/ Bruce, R (CERN) ; Fernandez, R Alemany (CERN) ; Argyropoulos, T (CERN) ; Bartosik, H (CERN) ; Bracco, C (CERN) ; D'Andrea, M (CERN) ; Frasca, A (CERN) ; Hermes, P (CERN) ; Jowett, J M (CERN) ; Mirarchi, D (CERN) et al.
A two-day test of operation with Pb ion beams was carried out in the CERN Large Hadron Collider (LHC) in 2022, with the aim of gaining experience in view of the future high luminosity heavy-ion physics runs from 2023 onwards. The LHC experiments received the first Pb-Pb collisions at a record energy of 5.36 TeV centre-of-mass energy per colliding nucleon pair (beam energy 6.8 Z TeV). [...]
2023 - 4 p.
- Published in : JACoW IPAC 2023 (2023) MOPL021
Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.MOPL021
|
|
3.
|
Simulations and Measurements of Betatron and Off-momentum Cleaning Performance in the Energy Ramp at the LHC
/ Triantafyllou, Natalia (CERN) ; Bruce, Roderik (CERN) ; D'Andrea, Marco (CERN) ; Dewhurst, Kay (CERN) ; Lindström, Bjorn (CERN) ; Mirarchi, Daniele (CERN) ; Redaelli, Stefano (CERN) ; Van der Veken, Frederik (CERN)
The Large Hadron Collider (LHC) is equipped with a multistage collimation system that protects the machine against unavoidable beam losses at large betatron and energy offsets at all stages of operation. Dedicated validations and an understanding in simulations of the collimation performance are crucial for the energy ramp from 450 GeV to 6.8 TeV because complex changes of optics and orbit take place in this phase. [...]
2024 - 5 p.
- Published in : JACoW HB 2023 (2024) 279-283
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.279-283
|
|
4.
|
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
|
|
5.
|
Suppression of Crab Cavity Noise Induced Emittance Growth by Transverse Beam Coupling Impedance
/ Triantafyllou, Natalia (Liverpool U. ; CERN) ; Antoniou, Fanouria (CERN) ; Bartosik, Hannes (CERN) ; Baudrenghien, Philippe (CERN) ; Buffat, Xavier (CERN) ; Calaga, Rama (CERN) ; Mastoridis, Themis (Cal. Poly.) ; Papaphilippou, Yannis (CERN) ; Wolski, Andrzej (Liverpool U.)
Crab cavities are a key component of the High Luminosity LHC (HL-LHC) upgrade, as they aim to mitigate the luminosity reduction induced by the crossing angle. Two superconducting crab cavities (CCs) were installed in the Super Proton Synchrotron (SPS) at CERN in 2018 to demonstrate their operation in a proton machine for the first time. [...]
2022 - 4 p.
- Published in : JACoW IPAC 2022 (2022) 1659-1662
Fulltext: PDF;
In : 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.1659-1662
|
|
6.
|
|
7.
|
Study of Pb-Pb and Pb-p Collision Debris in the CERN LHC in View of HL-LHC Operation
/ Sabaté-Gilarte, Marta (CERN) ; Bruce, Roderik (CERN) ; Cerutti, Francesco (CERN) ; Lechner, Anton (CERN)
For the first time, a full characterization of the Pb-Pb and Pb-p collision debris as well as its impact in terms of energy deposition in the long straight section (LSS) of CERN’s Large Hadron Collider has been carried out. By means of Monte Carlo simulations with FLUKA, both inelastic nuclear interaction and electromagnetic dissociation were taken into account as source term for lead ion operation, while for Pb-p operation only nuclear interaction is of importance. [...]
Geneva : JACoW, 2021 - 4 p.
- Published in : JACoW IPAC 2021 (2021) 2528-2531
Fulltext: PDF;
In : 12th International Particle Accelerator Conference (IPAC 2021), Online, 24 - 28 May 2021, pp.2528-2531
|
|
8.
|
LHC crystal collimation tests with 6.8 Z TeV Pb beams
/ Cai, R (CERN ; Ecole Polytechnique, Lausanne) ; Aberle, O (CERN) ; Bruce, R (CERN) ; Calviani, M (CERN) ; D'Andrea, M (CERN) ; Demassieux, Q (CERN) ; Dewhurst, K (CERN) ; Di Castro, M (CERN) ; Esposito, L S (CERN) ; Gilardoni, S (CERN) et al.
In the next heavy ion runs at the LHC, the cleaning of the beam halo will rely on crystal collimation. A test system installed in the collimation cleaning insertion is being upgraded for the operational challenges of the ion runs. [...]
2023 - 4 p.
- Published in : JACoW IPAC 2023 (2023) TUPM120
Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.TUPM120
|
|
9.
|
Performance of the ALICE Luminosity Leveling Software Architecture in the Pb-Pb Physics Run
/ Valentino, Gianluca (Malta U.) ; De Cataldo, Giacinto (CERN ; INFN, Bari) ; Franco, Antonio (CERN ; INFN, Bari) ; Hostettler, Michael (CERN) ; Visnyei, Orsolya (Budapest, RMKI)
Luminosity leveling is performed in the ALICE experiment of the Large Hadron Collider (LHC) in order to limit the event pile-up probability, and ensure a safe operation for the detectors. It will be even more important during Run 3 when 50 KHz Pb ion-Pb ion (Pb-Pb) collisions will be delivered in IP2. [...]
2020 - 4 p.
- Published in : 10.18429/JACoW-ICALEPCS2019-MOMPR006
Fulltext: PDF;
In : 17th Biennial International Conference on Accelerator and Large Experimental Physics Control Systems (ICALEPCS), New York, United States, 5 - 11 Oct 2019, pp.MOMPR006
|
|
10.
|
Crystal collimation performance at the LHC with a 6.8 TeV proton beam
/ D'Andrea, M (CERN) ; Aberle, O (CERN) ; Abramov, A (CERN) ; Bruce, R (CERN) ; Cai, R (CERN ; Ecole Polytechnique, Lausanne) ; Calviani, M (CERN) ; Demassieux, Q (CERN) ; Dewhurst, K A (CERN) ; Di Castro, M (CERN) ; Esposito, L S (CERN) et al.
Crystal collimation is studied to improve the collimation efficiency with ion beams at the High-Luminosity Large Hadron Collider (HL-LHC). Bent crystals are used instead of conventional primary collimators to deflect high-energy halo particles at angles orders of magnitude larger than what can be achieved with scattering by conventional materials. [...]
2023 - 4 p.
- Published in : JACoW IPAC 2023 (2023) MOPL023
Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.MOPL023
|
|