CERN Accelerating science

Report
Report number	CERN-PBC-REPORT-2019-001 ; CERN-2020-004
Title	LHC fixed target experiments
Author(s)	Barschel, Colin (CERN) ; Bernhard, Johannes (CERN) ; Bersani, Andrea (INFN e Universita Genova (IT)) ; Boscolo Meneguolo, Caterina (Universita e INFN, Padova (IT)) ; Bruce, Roderik (CERN) ; Calviani, Marco (CERN) ; Carassiti, Vittore (Universita e INFN, Ferrara (IT)) ; Cerutti, Francesco (CERN) ; Chiggiato, Paolo (CERN) ; Ciullo, Giuseppe (Universita e INFN, Ferrara (IT)) ; Di Nezza, Pasquale (INFN, Frascati) ; Ferro-Luzzi, Massimiliano (CERN) ; Fomin, Alex (CERN) ; Galluccio, Francesca (Università di Napoli) ; Garattini, Marco (CERN) ; Giovannozzi, Massimo (CERN) ; Hadjidakis, Cynthia (Centre National de la Recherche Scientifique (FR)) ; Kurepin, Alexeii (Russian Academy of Sciences) ; Kurepin, Nikolay (Russian Academy of Sciences) ; Lenisa, Paolo (Università di Ferrara) ; Macrì, Mario (INFN Genova) ; Martinez Vidal, Fernando (Universitat de València-CSIC) ; Massacrier, Laure Marie (IPNO, CNRS-IN2P3, Univ. Paris-Sud) ; Mazzolari, Andrea (Università di Ferrara) ; Mereghetti, Alessio (CERN) ; Merli, Andrea (Università di Milano) ; Mether, Lotta (CERN) ; Mirarchi, Daniele (CERN) ; Neri, Nicola (Università di Milano) ; Orth, Herbert (GSI Hadron physics) ; Pappalardo, Luciano Libero (Università di Ferrara) ; Poland, Kyle Lewis (CERN) ; Popovic, Branko Kosta (CERN) ; Pressard, Kevin (IPNO, CNRS-IN2P3, Univ. Paris-Sud) ; Redaelli, Stefano (CERN) ; Robbe, Patrick (Laboratoire de l’Accélerateur Linéaire (LAL), Université Paris Sud Orsay) ; Rossi, Roberto (CERN) ; Rumolo, Giovanni (CERN) ; Salvant, Benoît (CERN) ; Scandale, Walter (CERN) ; Steffens, Erhard (FAU Erlangen-Nürnberg,) ; Stocchi, Achille (Laboratoire de l’Accélerateur Linéaire (LAL), Université Paris Sud Orsay) ; Topilskaya, Natalia (Institute for Nuclear Research, Moscow) ; Vollinger, Christine (CERN)
Publication	2019 - 47.
Series	(CERN Yellow Reports: Monographs ; 4/2020)
Subject category	Accelerators and Storage Rings
Study	Physics Beyond Colliders
Abstract	Several fixed-target experiments at the LHC are being proposed and actively studied. Splitting of beam halo from the core by means of a bent crystal combined with a second bent crystal after the target has been suggested in order to study magnetic and electric dipole moments of short-lived particles. A similar scheme without the second crystal or other schemes with more conventional solid or gas target have been proposed to study the hadronic matter and the quark-gluon plasma, as well as to provide inputs to cosmic ray physics. Most notably, an upgrade of the existing and already productive LHCb gas target (SMOG), which would make use of a storage cell, has been proposed, designed, and extensively reviewed. The implementation in LHCb of a polarised gas target, based on the storage cell technique, was also discussed, motivated by the nucleon-spin study. The status of these proposals, their technical feasibility and impacts on the LHC machine have been studied in the LHC fixed-target working group of the Physics Beyond Collider forum at CERN. The status and outcome of these studies are presented here.
ISBN	9789290835738 (print version, paperback) 9789290835745 (electronic version)
DOI	ebook: 10.23731/CYRM-2020-004
Copyright/License	publication: © 2020-2024 CERN (License: CC-BY-4.0)

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