CERN Accelerating science

Internal Note
Report number	CERN-ACC-NOTE-2024-0001
Title	LHC Oxygen Run Preparation in the CERN Injector Complex
Author(s)	Slupecki, Maciej (CERN) ; Aguglia, Davide (CERN) ; Aguiar, Ygor (Universite Jean Monnet (FR)) ; Alemany Fernandez, Reyes (CERN) ; Argyropoulos, Theodoros (CERN) ; Barlow, Roger Andrew (CERN) ; Bartosik, Hannes (CERN) ; Bellodi, Giulia (CERN) ; Bilko, Kacper (Universite Jean Monnet (FR)) ; Borburgh, Jan (CERN) ; Bruce, Roderik (CERN) ; Brucoli, Matteo (Universita e sezione INFN di Napoli (IT)) ; Carlier, Etienne (CERN) ; Cettour Cave, Stephane (CERN) ; Corso, Jean-Pierre (CERN) ; Damerau, Heiko (CERN) ; Danzeca, Salvatore (CERN) ; Delrieux, Marc (CERN) ; Deslande, Freider ; Dolenc, Miha (CERN) ; Ferreira Somoza, Jose Antonio (CERN) ; Garcia Alia, Ruben (CERN) ; Grenier-Boley, Edouard (CERN) ; Huschauer, Alexander (CERN) ; John, Isabelle ; Kuchler, Detlef (CERN) ; Lerner, Giuseppe (CERN) ; Li, Kevin Shing Bruce (CERN) ; Magnin, Nicolas (CERN) ; Mahner, Edgar (CERN) ; Morand, Boris (CERN) ; Mutin, Christophe (CERN) ; King, Quentin (CERN) ; Pavis, Steven (CERN) ; Prost, Antoine (CERN) ; Ramberger, Suitbert (CERN) ; Ruffieux, Romain Brice (CERN) ; Scrivens, Richard (CERN) ; Soderstrom, Daniel Paul ; Van Trappen, Pieter (CERN) ; Valerio Lizarraga, Cristhian Alfonso (Universidad Autonoma de Sinaloa (MX)) ; Voumard, Nicolas (CERN) ; Widorski, Markus (CERN) ; Zimmaro, Alessandro (Universite Montpellier I (FR))
Corporate author(s)	CERN. Geneva. ATS Department
Publication	2024
Imprint	17 Jan 2024
Number of pages	29
Subject category	Accelerators and Storage Rings
Accelerator/Facility, Experiment	CERN LINAC3
Keywords	Beam commissioning, radiological impact, oxygen beam, beam interlock
Abstract	The Ion Accelerator Complex, composed of a linear accelerator (Linac3) and a chain of synchrotrons (Low Energy Ion Ring: LEIR, Proton Synchrotron: PS, Super Proton Synchrotron: SPS and the Large Hadron Collider: LHC) will operate oxygen ion beams for Oxygen–Oxygen (O–O) and proton–Oxygen (p–O) collisions in the LHC in Run 3. The preparation of this run is challenging not only because a new ion species will be used, but also because the beam commissioning will have to be done in a record time - a couple of months of beam commissioning in the injectors, and one week of collisions in the LHC. The operation of oxygen beams in the accelerator complex brings radiation hazards that require the installation of new personnel protection devices and interlocks. The new ion species is also characterised by new beam dynamics behaviour that will have to be studied in terms of space charge and intra-beam scattering. In order to address the feasibility of the oxygen beam operation across the Ion Injector Complex, and provide estimates of beam performance, a project was mandated by the ATS directorate. The studies performed, the results obtained, and the budget and deadlines allocated to the project are described in this note.
Submitted by	[email protected]