CERN Accelerating science

Published Articles
Report number	CERN-ACC-2019-089
Title	Updated High-Energy LHC design
Author(s)	Zimmermann, Frank (CERN) ; Abelleira, Jose Luis (JAI, UK) ; Abramov, Andrey (JAI, UK ; Royal Holloway, U. of London) ; Amorim, David (CERN) ; Antipov, Sergey (CERN) ; Apyan, Armen (Yerevan Phys. Inst.) ; Arsenyev, Sergey (CERN) ; Barranco, Javier (Ecole Polytechnique, Lausanne) ; Benedikt, Michael (CERN) ; Bruce, Roderik (CERN) ; Burkart, Florian (DESY) ; Cai, Yunhai (SLAC) ; Crouch, Matthew (CERN) ; Cruz Alaniz, Emilia (JAI, UK) ; Fartoukh, Stephane (CERN) ; Giovannozzi, Massimo (CERN) ; Goddard, Brennan (CERN) ; Guillermo, Gerardo (Merida, IPN) ; Hofer, Michael (CERN) ; Keintzel, Jacqueline (CERN) ; Kersevan, Roberto (CERN) ; Mertens, Volker (CERN) ; Mether, Lotta (Ecole Polytechnique, Lausanne) ; Molson, James (CERN) ; Muttoni, Yvon (CERN) ; Nosochkov, Yuri (SLAC) ; Ohmi, Kazuhito (KEK, Tsukuba) ; Oide, Katsunobu (KEK, Tsukuba) ; Osborne, John (CERN) ; Parma, Vittorio (CERN) ; Pieloni, Tatiana (Ecole Polytechnique, Lausanne) ; Pikhartova, Helena (JAI, UK ; Royal Holloway, U. of London) ; Raginel, Vivien (CERN) ; Redaelli, Stefano (CERN) ; Risselada, Thys (CERN) ; Rivkin, Leonid (Ecole Polytechnique, Lausanne) ; Ruehl, Ingo (CERN) ; Salvant, Benoit (CERN) ; Schoerling, Daniel (CERN) ; Seryi, Andrei (JAI, UK) ; Shaposhnikova, Elena (CERN) ; Tambasco, Claudia (Ecole Polytechnique, Lausanne) ; Tavian, Laurent (CERN) ; Todesco, Ezio (CERN) ; Tomás, Rogelio (CERN) ; Tommasini, Davide (CERN) ; Valchkova-Georgieva, Fani (CERN) ; Venturi, Valentina (CERN) ; Wollmann, Daniel (CERN) ; Zhou, Demin (KEK, Tsukuba) ; van Riesen-Haupt, Léon (JAI, UK)
Publication	2019
Number of pages	4
In:	10th International Particle Accelerator Conference, Melbourne, Australia, 19 - 24 May 2019, pp.MOPMP037
DOI	10.18429/JACoW-IPAC2019-MOPMP037
Subject category	Accelerators and Storage Rings
Accelerator/Facility, Experiment	CERN HE-LHC
Abstract	We present updated design parameters for a future High-Energy LHC. A more realistic turnaround time has led to a revision of the target peak luminosity, as well as a choice of a larger IP beta function, and longer physics fills. Pushed parameters of the Nb$_ 3$Sn superconducting cable together with a modified layout of the 16 T dipole magnets resulted in revised field errors, updated dynamic-aperture simulations, and an associated re-evaluation of injector options. Collimators in the dispersion suppressors help achieve satisfactory cleaning performance. Longitudinal beam parameters ensure beam stability throughout the cycle. Intrabeam scattering rates and Touschek lifetime appear benign.
Copyright/License	Publication: (License: CC-BY-3.0)

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