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@inproceedings{redaelli:hb2023-thbp49, author = {S. Redaelli and A. Abramov and D.B. Baillard and R. Bruce and R. Cai and F. Carra and M. D’Andrea and M. Di Castro and L. Giacomel and P.D. Hermes and B. Lindström and D. Mirarchi and N. Mounet and F.-X. Nuiry and A. Perillo Marcone and F.F. Van der Veken and A. Vella}, % author = {S. Redaelli and A. Abramov and D.B. Baillard and R. Bruce and R. Cai and F. Carra and others}, % author = {S. Redaelli and others}, title = {{Collimation of 400 MJ Beams at the LHC: The First Step Towards the HL-LHC Era}}, % booktitle = {Proc. HB'23}, booktitle = {Proc. 68th Adv. Beam Dyn. Workshop High-Intensity High-Brightness Hadron Beams (HB'23)}, eventdate = {2023-10-09/2023-10-13}, pages = {603--606}, paper = {THBP49}, language = {english}, keywords = {collimation, proton, luminosity, operation, impedance}, venue = {Geneva, Switzerland}, series = {ICFA Advanced Beam Dynamics Workshop on High-Intensity and High-Brightness Hadron Beams}, number = {68}, publisher = {JACoW Publishing, Geneva, Switzerland}, month = {04}, year = {2024}, issn = {2673-5571}, isbn = {978-3-95450-253-0}, doi = {10.18429/JACoW-HB2023-THBP49}, url = {https://jacow.org/hb2023/papers/thbp49.pdf}, 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.}}, }