Status and overview of the CLEAR Facility at CERN

Gilardi, Antonio; Malyzhenkov, Alexander; Aksoy, Avni; Moore, Ciara Marie; Gamba, Davide; Tangari, Giacomo; Leygonie, Johan Pierre; Corsini, Roberto; Wang, Sabrina; Simonsson, Sara Jenny; Farabolini, Wilfrid

doi:10.18429/JACoW-LINAC2026-FR1A005

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URL	https://doi.org/10.18429/JACoW-LINAC2026-FR1A005
Title	Status and overview of the CLEAR Facility at CERN
Authors	A. Gilardi, A. Malyzhenkov, A. Aksoy, D. Gamba, J. Leygonie, R. Corsini, W. Farabolini European Organization for Nuclear Research C. Moore University of Exeter, European Organization for Nuclear Research G. Tangari Sapienza University of Rome, European Organization for Nuclear Research S. Wang University of Oxford S. Simonsson Lund University, European Organization for Nuclear Research
Abstract	CLEAR (CERN Linear Electron Accelerator for Research) is a versatile electron beam user facility operating at CERN, providing beams with energies up to 200 MeV across a broad range of bunch charges, emittances, and timing configurations. The facility serves a diverse and growing internal and external user community, supporting a wide experimental program spanning multiple domains of accelerator research and applications. In this paper, we present an overview of the current status of CLEAR, summarizing the breadth of experiments conducted across recent operational runs and the key developments of the facility. We further report on the installation and commissioning of the second beam line, a new beamline branch featuring a dog-leg section, a set of slits in both dispersive and non-dispersive regions, and larger aperture focusing elements, which have the potential to significantly expand the facility's experimental capabilities and accessible beam parameter space. The continued development of CLEAR's infrastructure and the steady growth of its user base consolidate its role as a unique and flexible platform for accelerator research and technology demonstration at CERN.
Paper	download: FR1A005.pdf
Cite	BibTeX, LaTeX, Text/Word, RIS, EndNote
Conference	33rd International Linear Accelerator Conference (LINAC'26)
Series
Location	Daejeon, Korea
Date	16-21 Aug 2026
Publisher	JACoW Publishing, Geneva, Switzerland
Editorial Board	Dong-Eon Kim (Pohang Accelerator Laboratory), Jangwon Kwon (Institute for Basic Science), Yujung Ahn (Institute for Basic Science), Jae-yu Lee (Pohang Accelerator Laboratory), Lin Bian (Institute of High Energy Physics, Chinese Academy of Sciences), Thakonwat Chanwattana (Synchrotron Light Research Institute), Yung-Sen Cheng (National Synchrotron Radiation Research Center), Manuel J. Gutiérrez (IFMIF-DONES España), Maurizio Montis (Istituto Nazionale di Fisica Nucleare), Volker RW Schaa (GSI Helmholtzzentrum für Schwerionenforschung GmbH), Akito Uchiyama (RIKEN Nishina Center)
Online ISBN	978-3-95450-275-2
Online ISSN	2226-0366
Received	14 August 2026
Revised	14 August 2026
Accepted	17 August 2026
Issued	23 October 2026
DOI	10.18429/JACoW-LINAC2026-FR1A005
Pages	747-750
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.