WEPM109

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URL	https://doi.org/10.18429/JACoW-IPAC2023-WEPM109
Title	Beam-Impact Validation of HL-LHC Collimator Materials: the "MultiMat-2" Experiment
Authors	F. Carra, A. Bertarelli, A. Perez Fontenla, A. Lechner, A. Perillo Marcone, C. Accettura, D. Glaude, E. Farina, E. Rigutto, E. Berthome, F. Nuiry, J. Guardia, M. Guinchard, N. Charitonidis, O. Sacristan De Frutos, R. Bruce, S. Redaelli, W. Vollenberg European Organization for Nuclear Research P. Simon GSI Helmholtzzentrum für Schwerionenforschung GmbH S. Pfeiffer European Organization for Nuclear Research (CERN)
Abstract	In 2017, a proton-impact test HL-LHC collimator materials was carried out in the HiRadMat facility at CERN. The experiment, called “MultiMat”, enabled the testing of bulk and coated materials developed at CERN for different beam collimation functionalities. Manufacturing of these materials was then passed to the industry, leading to a series production for use in the collimators installed in the LHC during Long Shutdown 2 (LS2). The industrial versions of bulk and coating materials were tested in HiRadMat in 2021 in the “MultiMat-2” experiment, that efficiently re-used of the same experimental test bench as for “MultiMat”. This new experiment proved the reliability of the absorbers installed in LS2, and confirmed the possible use of alternative materials and coatings for the next LS3 collimator production. This paper describes the preparation and beam parameters of “MultiMat-2”, the experimental and data-acquisition equipment and the main results of the experiment.
Paper	download: WEPM109.pdf
Cite	BibTeX, LaTeX, Text/Word, RIS, EndNote
Conference	14th International Particle Accelerator Conference
Series
Location	Venice, Italy
Date	07-12 May 2023
Publisher	JACoW Publishing, Geneva, Switzerland
Editorial Board	Ralph Assmann - Deutsches Elektronen-Synchrotron DESY Peter McIntosh - Science and Technology Facilities Council (STFC/DL/ASTeC) Giovanni Bisoffi - Istituto Nazionale di Fisica Nucleare (INFN/LNL) Alessandro Fabris - Elettra-Sincrotrone Trieste S.C.p.A. Ivan Andrian - Elettra-Sincrotrone Trieste S.C.p.A. Giulia Vinicola - Istituto Nazionale di Fisica Nucleare (INFN/LNF)
Online ISBN	978-3-95450-231-8
Online ISSN	2673-5490
Received	11 May 2023
Revised	16 June 2023
Accepted	16 June 2023
Issued	26 September 2023
DOI	10.18429/JACoW-IPAC2023-WEPM109
Pages	3822-3825
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.