CERN Accelerating science

Article
Title	Optimisation of the FCC-ee Positron Source Using a HTS Solenoid Matching Device
Author(s)	Zhao, Yongke (CERN) ; Auchmann, Bernhard (PSI, Villigen) ; Chaikovska, Iryna (IJCLab, Orsay) ; Chehab, Robert (IJCLab, Orsay) ; Craievich, Paolo (PSI, Villigen) ; Döbert, Steffen (CERN) ; Duda, Michal (Cracow, INP) ; Kosse, Jaap (PSI, Villigen) ; Latina, Andrea (CERN) ; Martyshkin, Pavel (Novosibirsk, IYF) ; Ogur, Salim (CERN) ; Zennaro, Riccardo (PSI, Villigen)
Publication	2022
Number of pages	4
In:	JACoW IPAC 2022 (2022) 2003-2006
In:	13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.2003-2006
DOI	10.18429/JACoW-IPAC2022-WEPOPT062
Subject category	Accelerators and Storage Rings
Accelerator/Facility, Experiment	CERN FCC
Abstract	In this paper, we present the simulation and optimisation of the FCC-ee positron source, where a high-temperature superconducting (HTS) solenoid is used as the matching device to collect positrons from the target. The "conventional" target scheme is used which simply consists of amorphous tungsten. The target is placed inside the bore of the HTS solenoid to improve the accepted positron yield at the entrance of the damping ring and the location of the target is optimised. The latest recommended baseline beam parameters are used and presented. An optimisation of the ideal positron yield using the analytic SC solenoid on-axis field is also performed and shows that the design of the HTS solenoid is optimal as far as the accepted positron yield is concerned.
Copyright/License	CC-BY-3.0

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