CERN Accelerating science

Article
Title	Estimates of Collective Effects for the FCC-$e^+e^-$ Pre-Booster Ring
Related title	ESTIMATES OF COLLECTIVE EFFECTS FOR FCC-𝑒 +𝑒 − PRE-BOOSTER RING
Author(s)	Etisken, Ozgur (CERN) ; Antoniou, Fanouria (CERN) ; Çiftçi, Abbas Kenan (Izmir U. Economics, Izmir) ; Oide, Katsunobu (CERN ; KEK, Tsukuba) ; Papaphilippou, Yannis (CERN) ; Zimmermann, Frank (CERN)
Publication	JACoW, 2021
Number of pages	4
In:	JACoW IPAC 2021 (2021) 148-151
In:	12th International Particle Accelerator Conference (IPAC 2021), Online, 24 - 28 May 2021, pp.148-151
DOI	10.18429/JACoW-IPAC2021-MOPAB032 (publication)
Subject category	Accelerators and Storage Rings
Abstract	The FCC-e⁺e⁻ injector complex needs to produce and to transport high-intensity e⁺ and e⁻ beams at a fast repetition rate for topping up the collider at its collision energy. Two different options are under consideration as pre-accelerator before the bunches are transferred to the high-energy booster: either using the existing SPS machine or designing a completely new ring. The purpose of this paper is to present the studies of collective effects with analytical estimates for both the pre-booster ring design options including space charge (SC), longitudinal micro-wave instability (LMI), transverse mode coupling instability (TMCI), ion effects, electron cloud (e-cloud), coherent synchrotron radiation (CSR), and intra-beam scattering (IBS).
Copyright/License	publication: © 2021 (License: CC-BY-3.0)

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