WEPM001

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URL	https://doi.org/10.18429/JACoW-IPAC25-WEPM001
Title	High Luminosity LHC optics: Machine development results
Authors	Y. Angelis Aristotle University of Thessaloniki B. Lindstrom, E. Maclean, J. Dilly, K. Skoufaris, R. De Maria, R. Tomas European Organization for Nuclear Research F. Carlier École Polytechnique Fédérale de Lausanne, European Organization for Nuclear Research; École Polytechnique Fédérale de Lausanne, European Organization for Nuclear Research
Abstract	As the High Luminosity LHC (HL-LHC) era approaches, precise control of the accelerator becomes increasingly critical. Machine studies are essential to address the forthcoming challenges and develop correction strategies based on experimental measurements. Although the upgraded inner triplets are not yet available, key features of the HL-LHC optics can still be investigated. This includes exploring the high Achromatic Telescopic Squeeze (ATS) factors in the neighboring arcs of the high-luminosity interaction regions, particularly under flat optics configurations. A beta blow-up is also implemented in the long straight section containing most of the beam instrumentation to improve their sensitivity at top energy. This paper presents experimental measurements, evaluates arc phase errors, and discusses the implementation of local corrections. Sextupole bumps in the arcs were employed to mitigate these errors, demonstrating their effectiveness in optimizing machine performance.
Paper	download: WEPM001.pdf
Cite	BibTeX, LaTeX, Text/Word, RIS, EndNote
Conference	16th International Particle Accelerator Conference
Series
Location	Taipei, Taiwan
Date	01-06 Jun 2025
Publisher	JACoW Publishing, Geneva, Switzerland
Editorial Board	* Ming-Chyuan Lin - National Synchrotron Radiation Research Center * Yoichi Sato - KEK * Jui-Che Huang - National Synchrotron Radiation Research Center * David Button - Australian Nuclear Science and Technology Organisation * Ping-Shun Chuang - National Synchrotron Radiation Research Center
Online ISBN	978-3-95450-248-6
Online ISSN	2673-5490
Received	27 May 2025
Revised	03 June 2025
Accepted	03 June 2025
Issued	06 June 2025
DOI	10.18429/JACoW-IPAC25-WEPM001
Pages	1905-1908
Copyright	Published by JACoW Publishing under the terms of the Creative Commons Attribution 4.0 license. Any further distribution of this work must maintain attribution to the author(s), the published article's title, publisher, and DOI.