THPS029

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URL	https://doi.org/10.18429/JACoW-IPAC2025-THPS029
Title	Experience with the CERN LINAC4 and its performance during the first four years of operation
Authors	P. Skowronski, A. Akroh, A. Lombardi, B. Bielawski, C. Bracco, E. Sargsyan, E. Said, F. Chapuis, F. Asvesta, G. Di Giovanni, G. Bellodi, J. Lallement, J. Sanchez Alvarez, J. Parra-Lopez, M. Marchi, M. Marcandella, R. Wegner, S. Albright, V. Barbet, Y. Wu European Organization for Nuclear Research
Abstract	Since 2020 LINAC4 provides the protons for the entire CERN accelerator complex. It accelerates H- ions to a kinetic energy of 160 MeV and injects them into the Proton Synchrotron (PS) Booster using a charge exchange injection mechanism. The performance requirements have been successfully met since 2021. This paper presents the operational experience gained, together with availability and reliability statistics for LINAC4, during its first four years of operation, and details the key performance indicators for beam quality and stability. It also discusses the main issues encountered and the implemented solutions that have allowed further improvements to be made. Recent developments on the H- ion source have led to an increase of the beam current from the original 35 mA to 50 mA, opening the possibility to increase the intensity delivered to the PS Booster for the benefit of CERN's experimental programmes. Beam energy modulation in LINAC4 has also been developed to increase the PS Booster bunch intensity for which the results of beam tests are presented.
Paper	download: THPS029.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	31 May 2025
Accepted	04 June 2025
Issued	05 November 2025
DOI	10.18429/JACoW-IPAC2025-THPS029
Pages	3026-3029
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.