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Positron source for FCC-ee

Authors :: Chaikovska, Iryna
Apyan, Armen
Chehab, Robert
Enomoto, Yoshinori
Faus-Golfe, Angeles
Furukawa, Kazuro
Han, Yanliang
Kamitani, Takuya
Martyshkin, Pavel
Miyahara, Fusashi
Ogur, Salim
Oide, Katsunobu
Papaphilippou, Yannis
Rinolfi, Louis
Satoh, Masanori
Seimiya, Yuji
Sievers, Peter
Suwada, Tsuyoshi
Zimmermann, Frank
Laboratoire de l'Accélérateur Linéaire (LAL)
Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Publication Year :: 2019
Publisher :: HAL CCSD, 2019.
Abstract: The FCC-ee is a high-luminosity, high-precision circular collider to be constructed in a new 100 km tunnel in the Geneva area. The physics case is well established and the FCC-ee operation is foreseen at 91 GeV (Z-pole), 160 GeV (W pair production threshold), 240 GeV (Higgs resonance) and 365 GeV (t-tbar threshold). Due to the large 6D production emittance and important thermal load in the production target, the positron injector, in particular the positron source, is one of the key elements of the FCC-ee, requiring special attention. To ensure high reliability of the positron source, conventional and hybrid targets are currently under study. The final choice of the positron target will be made based on the estimated performances. In this framework, we present a preliminary design of the FCC-ee positron source, with detailed simulation studies of positron production, capture and primary acceleration.<br />Proceedings of the 10th Int. Particle Accelerator Conf., IPAC2019, Melbourne, Australia