CERN Accelerating science

Article
Title Simulations and Measurements of Betatron and Off-momentum Cleaning Performance in the Energy Ramp at the LHC
Author(s) 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)
Publication 2024
Number of pages 5
In: JACoW HB 2023 (2024) 279-283
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
DOI 10.18429/JACoW-HB2023-WEC3C3
Subject category Accelerators and Storage Rings
Abstract 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. Indeed, the betatron functions are reduced in all experiments for an efficient setup of the collisions at top energy. In this paper, simulations of the betatron and off-momentum cleaning during the energy ramp are presented. A particular focus is given to the off-momentum losses at the start of the ramp. The simulation results are benchmarked against experimental data, demonstrating the accuracy of the newly developed tools used for the simulations.
Copyright/License © 2024 the author(s) (License: CC-BY-3.0)

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 Rekord stworzony 2024-06-15, ostatnia modyfikacja 2024-06-15


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