CERN Accelerating science

Article
Title	The FCCee Pre-Injector Complex
Author(s)	Craievich, Paolo (PSI, Villigen) ; Alharthi, Fahad (IJCLab, Orsay) ; Auchmann, Bernhard (PSI, Villigen) ; Bartmann, Wolfgang (CERN) ; Benedikt, Michael (CERN) ; Besana, Maria Ilaria (CERN) ; Bettoni, Simona (PSI, Villigen) ; Braun, Hans-Heinrich (PSI, Villigen) ; Calviani, Marco (CERN) ; Chaikovska, Iryna (IJCLab, Orsay) ; De Santis, Antonio (Frascati) ; Döbert, Steffen (CERN) ; Duda, Michal (PSI, Villigen) ; Dutheil, Yann (CERN) ; Enomoto, Yoshinori (KEK, Tsukuba) ; Etisken, Ozgur (CERN ; Bogazici U.) ; Furukawa, Kazuro (KEK, Tsukuba) ; Grenard, Jean-Louis (CERN) ; Grudiev, Alexej (CERN) ; Hauenstein, Dominique (PSI, Villigen) ; Hohmann, Eike (PSI, Villigen) ; Humann, Barbara (CERN) ; Ischebeck, Rasmus (PSI, Villigen) ; Juranič, Pavle (PSI, Villigen) ; Kosse, Jaap (PSI, Villigen) ; Latina, Andrea (CERN) ; Lechner, Anton (CERN) ; Milardi, Catia (Frascati) ; Ogur, Salim (IJCLab, Orsay) ; Oide, Katsunobu (KEK, Tsukuba ; CERN) ; Orlandi, Gian Luca (PSI, Villigen) ; Pedrozzi, Marco (PSI, Villigen) ; Perillo-Marcone, Antonio (CERN) ; Pommerenke, Hermann (CERN) ; Raguin, Jean-Yves (PSI, Villigen) ; Ramjiawan, Rebecca (CERN) ; Raubenheimer, Tor (SLAC) ; Reiche, Sven (PSI, Villigen) ; Sanfilippo, Stephane (PSI, Villigen) ; Schaer, Mattia (PSI, Villigen) ; Vallis, Nicolas (PSI, Villigen ; Ecole Polytechnique, Lausanne) ; Zennaro, Riccardo (PSI, Villigen) ; Zhao, Yongke (CERN) ; Zimmermann, Frank (CERN)
Publication	2022
Number of pages	4
In:	JACoW IPAC 2022 (2022) 2007-2010
In:	13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.2007-2010
DOI	10.18429/JACoW-IPAC2022-WEPOPT063
Subject category	Accelerators and Storage Rings
Accelerator/Facility, Experiment	CERN FCC
Abstract	The international FCC study group published in 2019 a Conceptual Design Report for an electron-positron collider with a centre-of-mass energy from 90 to 365 GeV with a beam currents of up to 1.4 A per beam. The high beam current of this collider create challenging requirements on the injection chain and all aspects of the linac need to be carefully reconsidered and revisited, including the injection time structure. The entire beam dynamics studies for the full linac, damping ring and transfer lines are major activities of the injector complex design. A key point is that any increase of positron production and capture efficiency reduces the cost and complexity of the driver linac, the heat and radiation load of the converter system, and increases the operational margin. In this paper we will give an overview of the status of the injector complex design and introduce the new layout that has been proposed by the study group working in the context of the CHART collaboration. In this framework, furthermore, we also present the preliminary studies of the FCC-ee positron source highlighting the main requirements and constraints.
Copyright/License	CC-BY-3.0

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