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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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Benchmarks of Energy Deposition Studies for Heavy-Ion Collimation Losses at the LHC
/ Potoine, Jean-Baptiste (CERN) ; Bruce, Roderik (CERN) ; Cai, Rongrong (CERN ; Ecole Polytechnique, Lausanne) ; Hermes, Pascal (CERN) ; Lechner, Anton (CERN) ; Redaelli, Stefano (CERN) ; Waets, Andreas (CERN) ; Wrobel, Frederic (IES, Montpellier)
During some periods in its second physics run (2015-2018), the LHC has been operated with 208Pb⁸²⁺ ion beams at an energy of 6.37 ZTeV. The LHC is equipped with a betatron collimation system, which intercepts the transverse beam halo and protects sensitive equipment such as superconducting magnets against beam losses. [...]
2022 - 4 p.
- Published in : JACoW IPAC 2022 (2022) 1730-1733
Fulltext: PDF;
In : 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.1730-1733
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Evaluation of Power Deposition in HL-LHC with Crystal-assisted Heavy Ion Collimation
/ Rodin, Volodymyr (CERN) ; Bruce, Roderik (CERN) ; Cai, Rongrong (CERN) ; D'Andrea, Marco (CERN) ; Esposito, Luigi Salvatore (CERN) ; Lechner, Anton (CERN) ; Potoine, Jean-Baptiste (CERN) ; Redaelli, Stefano (CERN) ; Schoofs, Philippe (CERN)
The future LHC heavy-ion program, utilizing 208Pb⁸²⁺ beams at up to 7 Z TeV, is anticipated to operate with substantial intensity upgrade. During periods of short beam lifetime, a potential performance limitation may arise from secondary ions produced by electromagnetic dissociation and hadronic fragmentation in the collimators of the betatron cleaning insertion. [...]
2024 - 5 p.
- Published in : JACoW HB 2023 (2024) 236-240
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.236-240
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Power Deposition Studies for Crystal-Based Heavy Ion Collimation in the LHC
/ Potoine, Jean-Baptiste (CERN ; IES, Montpellier) ; Bruce, Roderik (CERN) ; Cai, Rongrong (CERN ; Ecole Polytechnique, Lausanne) ; Esposito, Luigi Salvatore (CERN) ; Hermes, Pascal (CERN) ; Lechner, Anton (CERN) ; Redaelli, Stefano (CERN) ; Waets, Andreas (CERN) ; Wrobel, Frederic (IES, Montpellier)
The LHC heavy-ion program with 208Pb⁸²⁺ beams is foreseen to benefit from a significant intensity upgrade in 2022. A performance limitation may arise from ion fragments scattered out of the collimators in the betatron cleaning insertion, which risk quenching superconducting magnets during periods of short beam lifetime. [...]
2022 - 4 p.
- Published in : JACoW IPAC 2022 (2022) 1726-1729
Fulltext: PDF;
In : 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.1726-1729
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Power deposition studies for standard and crystal-assisted heavy ion collimation in the CERN Large Hadron Collider
/ Potoine, J.B. (Montpellier U. ; CERN) ; Bruce, R. (CERN) ; Cai, R. (CERN ; Ecole Polytechnique, Lausanne) ; Cerutti, F. (CERN) ; D'Andrea, M. (CERN) ; Esposito, L. (CERN) ; Hermes, P.D. (CERN) ; Lechner, A. (CERN) ; Mirarchi, D. (CERN) ; Redaelli, S. (CERN) et al.
The LHC heavy-ion program with $^{208}$Pb$^{82+}$ beams will benefit from a significant increase of the beam intensity when entering its High-Luminosity era in Run~3 (2023). The stored energy is expected to surpass 20~MJ per beam. [...]
arXiv:2304.03628.-
2023-09-01 - 24 p.
- Published in : Phys. Rev. Accel. Beams 26 (2023) 093001
Fulltext: 2304.03628 - PDF; Publication - PDF;
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Study of the 2015 Top Energy LHC Collimation Quench Tests Through an Advanced Simulation Chain
/ Skordis, Eleftherios (U. Liverpool (main) ; CERN) ; Bruce, Roderik (CERN) ; Cerutti, Francesco (CERN) ; Ferrari, Alfredo (CERN) ; Hermes, Pascal (CERN) ; Lechner, Anton (CERN) ; Mereghetti, Alessio (CERN) ; Redaelli, Stefano (CERN) ; Salvachua, Belen (CERN) ; Vlachoudis, Vasilis (CERN) et al.
While the LHC has shown record-breaking perfor-mance during the 2016 run, our understanding of the behaviour of the machine must also reach new levels. The collimation system and especially the betatron cleaning insertion region (IR7), where most of the beam halo is intercepted to protect superconducting (SC) magnets from quenching, has so far met the expectations but could nonetheless pose a bottleneck for future operation at higher beam intensities for HL-LHC. [...]
CERN-ACC-2017-300.-
2017 - 4 p.
- Published in : 10.18429/JACoW-IPAC2017-MOPAB012
Fulltext: PDF;
In : 8th International Particle Accelerator Conference, Copenhagen, Denmark, 14 - 19 May 2017, pp.MOPAB012
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Simulation of Heavy-Ion Beam Losses with Crystal Collimation*
/ Cai, Rongrong (CERN) ; Bruce, Roderik (CERN) ; D'Andrea, Marco (CERN) ; Esposito, Luigi Salvatore (CERN) ; Hermes, Pascal (CERN) ; Lechner, Anton (CERN) ; Mirarchi, Daniele (CERN) ; Potoine, Jean-Baptiste (CERN ; IES, Montpellier) ; Redaelli, Stefano (CERN) ; Salvat Pujol, Francesc (CERN) et al.
With the higher stored energy envisioned for future heavy-ion runs in the LHC and the challenging fragmentation aspect of heavy-ion beams due to interaction with collimator material, the need arises for even more performing collimation systems. One promising solution is crystal channeling, which is used in the HL-LHC baseline and starts with Run III for heavy-ion collimation. [...]
2022 - 5 p.
- Published in : JACoW IPAC 2022 (2022) 2082-2086
Fulltext: PDF;
In : 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.2082-2086
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Cleaning Performance of the Collimation System with Xe Beams at the Large Hadron Collider
/ Fuster-Martínez, Nuria (CERN) ; Bruce, Roderik (CERN) ; Hermes, Pascal (CERN) ; Jowett, John (CERN) ; Mirarchi, Daniele (CERN) ; Redaelli, Stefano (CERN)
The LHC heavy-ion program with Pb ions has delivered substantial physics results since the startup of the LHC. There was a Xe run in 2017 in which collimation losses and betatron halo cleaning were assessed. [...]
CERN-ACC-2018-131.-
2018 - 4 p.
- Published in : 10.18429/JACoW-IPAC2018-MOPMF038
Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.MOPMF038
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HL-LHC layout for fixed-target experiments in ALICE based on crystal-assisted beam halo splitting
/ Patecki, Marcin (Warsaw U. of Tech.) ; Mirarchi, Daniele (CERN) ; Redaelli, Stefano (CERN) ; Fomin, Alex (CERN) ; Hadjidakis, Cynthia (IJCLab, Orsay) ; Galluccio, Francesca (INFN, Naples) ; Scandale, Walter (Imperial Coll., London ; INFN, Rome)
The Large Hadron Collider (LHC) at the European Organization for Nuclear Research (CERN) is the world's largest and most powerful particle accelerator colliding beams of protons and lead ions at energies up to 7 ZTeV, Z is the atomic number. ALICE is one of the detector experiments optimised for heavy-ion collisions. [...]
arXiv:2210.13299.-
2023-11-18 - 6 p.
- Published in : Eur. Phys. J. C 83 (2023) 1053
Fulltext: 2210.13299 - PDF; document - PDF;
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