CERN Accelerating science

Article
Title	Collimation of 400 MJ Beams at the LHC: The First Step Towards the HL-LHC Era
Author(s)	Redaelli, Stefano (CERN) ; Abramov, Andrey (CERN) ; Baillard, Dylan (CERN) ; Bruce, Roderik (CERN) ; Cai, Rongrong (CERN ; Ecole Polytechnique, Lausanne) ; Carra, Federico (CERN) ; D'Andrea, Marco (CERN) ; Di Castro, Mario (CERN) ; Giacomel, Lorenzo (CERN) ; Hermes, Pascal (CERN) ; Lindström, Bjorn (CERN) ; Mirarchi, Daniele (CERN) ; Mounet, Nicolas (CERN) ; Nuiry, Francois-Xavier (CERN) ; Perillo Marcone, Antonio (CERN) ; Van der Veken, Frederik (CERN) ; Vella, Andrea (U. Malta)
Publication	2024
Number of pages	4
In:	JACoW HB 2023 (2024) 603-606
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.603-606
DOI	10.18429/JACoW-HB2023-THBP49
Subject category	Accelerators and Storage Rings
Abstract	An important upgrade programme is planned for the collimation system of the CERN Large Hadron Collider (LHC) in order to meet the challenges of the upcoming High-Luminosity LHC (HL-LHC) project. A first stage of the HL-LHC upgrade was already deployed during the last LHC Long Shutdown, offering important improvements of the collimation cleaning, a significant reduction of the impedance contribution and better cleaning of collisional debris, in particular for ion-ion collisions. This upgrade provides a critical opportunity to explore the LHC intensity limits during the LHC Run 3 and can provide crucial feedback to refine upgrade plans and operational scenarios in the HL-LHC era. This paper describes the performance of the upgraded LHC collimation system that has already enabled stored-beam energies larger than 400 MJ at the unprecedented beam energy of 6.8 TeV, and reviews further upgrade plans envisaged to reach 700 MJ beams at the HL-LHC.
Copyright/License	© 2024 the author(s) (License: CC-BY-3.0)

Corresponding record in: Inspire