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1.
Selected advances in the accelerator design of the Future Circular Electron-Positron Collider (FCC-ee) / FCC Collaboration
In autumn 2023, the FCC Feasibility Study underwent a crucial “mid-term review”. We describe some accelerator performance risks for the proposed future circular electron-positron collider, FCC-ee, identified for, and during, the mid-term review. [...]
FERMILAB-CONF-24-0659-AD-PIP2.- 2024 - 4 p. - Published in : JACoW IPAC 2024 (2024) WEPR14 Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.WEPR14
2.
Studies and Possible Mitigation of Electron Cloud Effects in FCC-ee / Yaman, Fatih (Izmir Inst. Tech.) ; Zimmermann, Frank (CERN)
In this work, we present numerical results for the electron cloud build-up and mitigation studies considering Arc Dipole and Drift sections of the FCC-ee collider. We report the central electron density that could be reached by minimising secondary electron contributions and the photoelectron generation rates in order to achieve e⁻ densities lower than the single-bunch instability threshold, considering the baseline beam parameters. [...]
2023 - 5 p. - Published in : JACoW eeFACT 2022 (2023) 154-158 Fulltext: PDF;
In : 65th ICFA Advanced Beam Dynamics Workshop on High Luminosity Circular e+ e- Colliders (eeFACT2022), INFN, Frascati, Italy, 12 - 16 Sep 2022, pp.154-158
3.
Mitigation of Electron Cloud Effects in the FCC-ee Collider / Yaman, Fatih (Izmir Inst. Tech.) ; Iadarola, Giovanni (CERN) ; Kersevan, Roberto (CERN) ; Ogur, Salim (IJCLab, Orsay) ; Ohmi, Kazuhito (KEK, Tsukuba) ; Zimmermann, Frank (CERN) ; Zobov, Mikhail (Frascati)
Electron clouds forming inside the beam vacuum chamber due to photoemission and secondary emission may limit the accelerator performance. Specifically, the electron clouds can blow up the vertical emittance of a positron beam, through a head-tail-type single-bunch instability, if the central electron density exceeds a certain threshold value, that can be estimated analytically. [...]
arXiv:2203.04872.- 2022-08-17 - 11 p. - Published in : EPJ Tech. Instrum. 9 (2022) 9 Fulltext: 2203.04872 - PDF; document - PDF;
4.
Linac and damping ring designs for the FCC-ee / Ogur, Salim (CERN ; Bogazici U.) ; Barnyakov, Alexey (Novosibirsk, IYF) ; Chaikovska, Iryna (Orsay, LAL) ; Chehab, Robert (Orsay, LAL) ; Furukawa, Kazuro (KEK, Tsukuba) ; Iida, Naoko (KEK, Tsukuba) ; Kamitani, Takuya (KEK, Tsukuba) ; Levichev, Alexey (Novosibirsk, IYF) ; Martyshkin, Pavel (Novosibirsk, IYF) ; Miyahara, Fusashi (KEK, Tsukuba) et al.
We report the design of the pre-injector chain for the Future Circular e$^+$e$^−$ Collider (FCC-ee) system. The electron beam from a low-emittance RF gun is accelerated by an S-band linac up to 6 GeV. [...]
CERN-ACC-2019-073.- 2019 - 4 p. - Published in : 10.18429/JACoW-IPAC2019-MOPMP002 Fulltext from publisher: PDF;
In : 10th International Particle Accelerator Conference, Melbourne, Australia, 19 - 24 May 2019, pp.MOPMP002

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3 Yaman, F
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