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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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2.
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Channeling performance of bent crystals developed at CERN
/ Rodin, Volodymyr (CERN) ; Esposito, Luigi Salvatore (CERN) ; Lechner, Anton (CERN) ; Demassieux, Quentin (CERN) ; Matheson, Eloise (CERN) ; Solis Paiva, Santiago (CERN) ; Seidenbinder, Regis (CERN) ; Aberle, Oliver (CERN) ; Perillo Marcone, Antonio (CERN) ; Calviani, Marco (CERN) et al.
Bent crystals are a mature technology used in several applications at CERN, such as the crystal-assisted collimation system for LHC ion operation and reduction of losses during the slow extraction from the SPS by shadowing the electrostatic septum. In the future, it is planned to measure electric and magnetic dipole moments of short-lived particles with a double-crystal experiment in the LHC. [...]
2024 - 4 p.
- Published in : JACoW IPAC 2024 (2024) THPS39
Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.THPS39
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3.
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Recent Developments with the New Tools for Collimation Simulations in Xsuite
/ Van der Veken, Frederik (CERN) ; Abramov, Andrey (CERN) ; Broggi, Giacomo (CERN ; Rome U., La Sapienza, Dip. di Astron.) ; Cerutti, Francesco (CERN) ; D'Andrea, Marco (CERN) ; Demetriadou, Despina (CERN) ; Esposito, Luigi Salvatore (CERN) ; Hugo, Gabrielle (CERN) ; Iadarola, Giovanni (CERN) ; Lindström, Bjorn (CERN) et al.
Simulations of single-particle tracking involving collimation systems need dedicated tools to perform the different tasks needed. These include the accurate description of particle-matter interactions when a tracked particle impacts a collimator jaw; a detailed aperture model to identify the longitudinal location of losses; and others. [...]
2024 - 5 p.
- Published in : JACoW HB 2023 (2024) 474-478
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.474-478
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4.
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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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5.
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Driver-witness configuration in CNT array-based acceleration
/ Barbera Ramos, Moises (Valencia U.) ; Bonatto, Alexandre (Rio Grande do Sul U.) ; Bontoiu, Cristian (Cockcroft Inst. Accel. Sci. Tech. ; Liverpool U.) ; Xia, Guoxing (Cockcroft Inst. Accel. Sci. Tech. ; Manchester U.) ; Resta-Lopez, Javier (Valencia U.) ; Apsimon, Oznur (Cockcroft Inst. Accel. Sci. Tech. ; Manchester U.) ; Martín-Luna, Pablo (Valencia U., IFIC) ; Rodin, Volodymyr (CERN)
Solid-state plasma wakefield acceleration might be an alternative to accelerate particles with ultra-high accelerating gradients, in the order of TV/m.In addition, due to their thermodynamic properties, 2D carbon-based materials, such as graphene layers and/or carbon nanotubes (CNT) are good candidates to be used as the media to sustain such ultra-high gradients. In particular, due to their cylindrical symmetry, multi-nm-aperture targets, made of CNT bundles or arrays may facilitate particle channelling through the crystalline structure.In this work, a two-bunch, driver-and-witness configuration is proposed to demonstrate the potential to achieve particle acceleration as the bunches propagate along a CNT-array structure.Particle-in-cell simulations have been performed using the VSIM code in a 2D Cartesian geometry to study the acceleration of the second (witness) bunch caused by the wakefield driven by the first (driver) bunch.The effective plasma-density approach was adopted to estimate the wakefield wavelength, which was used to identify the ideal separation between the two bunches, aiming to optimize the witness-bunch acceleration and focusing.Simulation results show the high acceleration gradient obtained, and the energy transfer from the driver to the witness bunch..
2023 - 4 p.
- Published in : JACoW IPAC 2023 (2023) TUPA052
Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.TUPA052
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6.
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MD 7224: LHC collimation quench test with protons
/ Hermes, Pascal Dominik (CERN) ; Abramov, Andrey (CERN) ; Bruce, Roderik (CERN) ; Calzolari, Daniele (Universita e INFN, Padova (IT)) ; D'Andrea, Marco (CERN) ; Giovannozzi, Massimo (CERN) ; Hernalsteens, Cedric (CERN) ; Lechner, Anton (CERN) ; Lindstrom, Bjorn Hans Filip (CERN) ; Mirarchi, Daniele (CERN) et al.
This note describes a collimation quench test performed at the CERN Large Hadron Collider. [...]
CERN-ACC-NOTE-2023-0024.
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2023.
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Low-Energy Negative Ion Injection Beamline for Experiments with Antiprotonic Atoms at AEgIS
/ Rodin, Volodymyr (U. Liverpool (main) ; Cockcroft Inst. Accel. Sci. Tech.) ; Cerchiari, Giovanni (Innsbruck U.) ; Doser, Michael (CERN) ; Farricker, Aaron (U. Liverpool (main)) ; Khatri, Ghanshyambhai (CERN) ; Kornakov, Georgy (Warsaw U. of Tech. (main)) ; Welsch, Carsten (U. Liverpool (main) ; Cockcroft Inst. Accel. Sci. Tech.)
Interaction of low-energy antiprotons with nuclear targets provided fundamental knowledge about proton and neutron densities of many nuclei through the capture process, cascade on lower electron orbits, and annihilation with the nucleon. The expelled electrons produce X-rays and with the recoil particles after annihilation, thus, a sufficient amount of information can be obtained about this interaction. [...]
2022 - 4 p.
- Published in : JACoW IPAC 2022 (2022) 2126-2129
Fulltext: PDF;
In : 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.2126-2129
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8.
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Design and Beam Dynamics Studies of a Novel Compact Recoil Separator Ring for Nuclear Research with Radioactive Beams
/ Resta-López, Javier (GACE-ICMUV) ; Foussat, Arnaud (CERN) ; Kirby, Glyn (CERN) ; Martel, Ismael (Huelva U.) ; Rodin, Volodymyr (Liverpool U. ; Cockcroft Inst. Accel. Sci. Tech.)
The recent development of radioactive beam facilities has significantly expanded the capabilities for investigating the structure of the atomic nucleus and the nuclear interaction. For instance, the HIE-ISOLDE facility at CERN delivers presently the largest range of low-energy radioactive beam available worldwide. [...]
Geneva : JACoW, 2021 - 4 p.
- Published in : JACoW IPAC 2021 (2021) 3031-3034
Fulltext: PDF;
In : 12th International Particle Accelerator Conference (IPAC 2021), Online, 24 - 28 May 2021, pp.3031-3034
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