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The status of the energy calibration, polarization and monochromatization of the FCC-ee
/ Bauche, Jeremie (CERN) ; Blondel, Alain (CERN) ; Ciarma, Andrea (Frascati) ; Faus-Golfe, Angeles (IJCLab, Orsay) ; Bogomyagkov, Anton (Novosibirsk, IYF) ; Martens, Aurélien (IJCLab, Orsay) ; Gaskell, David (Jefferson Lab) ; Sagan, David (Cornell U.) ; Barber, Desmond (New Mexico U.) ; Shatilov, Dmitry (CERN) et al.
The Future Circular electron-positron Collider, FCC- ee, is designed for unprecedented precision for particle physics experiments from the Z-pole up to above the top-pair-threshold, corresponding to a beam energy range from 45.6 to 182.5 GeV. Performing collisions at various particle-physics resonances requires precise knowledge of the centre-of-mass energy (ECM) and collision boosts at all four interaction points. [...]
2023 - 4 p.
- Published in : JACoW IPAC 2023 (2023) MOPL059
Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.MOPL059
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FCC-ee Energy Calibration and Polarization
/ Keintzel, Jacqueline (CERN) ; Benedikt, Michael (CERN) ; Blondel, Alain (CERN) ; Koop, Ivan (CERN) ; Tomas, Rogelio (CERN) ; Wenninger, Jorg (CERN) ; Wilkinson, Guy (CERN) ; Zimmermann, Frank (CERN)
/FCC-ee Collaboration
The Future Circular electron-positron Collider, FCC-ee, is designed for unprecedented precision for particle physics experiments from the Z-pole to above the top-pair-threshold. This demands a precise knowledge of the centre-of-mass energy (ECM) and collision boosts at all four interaction points and all operation energies. [...]
2022 - 6 p.
- Published in : PoS: ICHEP2022, pp. 048
Fulltext: PDF;
In : 41st International Conference on High Energy Physics (ICHEP 2022), Bologna, Italy, 6 - 13 Jul 2022, pp.048
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Comparison of Different Matching Device Field Profiles for the FCC-ee Positron Source
/ Zhao, Yongke (Shandong U. ; CERN) ; Auchmann, Bernhard (PSI, Villigen) ; Chaikovska, Iryna (IJCLab, Orsay) ; Chehab, Robert (IJCLab, Orsay) ; Craievich, Paolo (PSI, Villigen) ; Döbert, Steffen (CERN) ; Kosse, Jaap (PSI, Villigen) ; Latina, Andrea (CERN) ; Ma, Lianliang (Shandong U.) ; Martyshkin, Pavel (Novosibirsk, IYF) et al.
In this report, we compared different matching device field profiles for the FCC-ee positron source. The matching device is used to capture positrons with magnetic field. [...]
JACoW, 2021 - 4 p.
- Published in : JACoW IPAC 2021 (2021) 2617-2620
Fulltext: PDF;
In : 12th International Particle Accelerator Conference (IPAC 2021), Online, 24 - 28 May 2021, pp.2617-2620
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Monochromatization Interaction Region Optics Design for Direct s-channel production at FCC-ee
/ Zhang, Z D (Beijing, Inst. High Energy Phys. ; BSRF, Beijing ; IJCLab, Orsay) ; Faus-Golfe, A (IJCLab, Orsay) ; Jiang, H P (Harbin Inst. Tech.) ; Bai, B W (Harbin Inst. Tech.) ; Zimmermann, F (CERN) ; Oide, K (Sokendai, Tsukuba ; KEK, Tsukuba ; Geneva U.)
One of the most fundamental measurements since the Higgs boson discovery, is its Yukawa couplings. Such a measurement is only feasible, if the centre-of-mass (CM) energy spread of the e+e- collisions can be reduced from ~50 MeV to a level comparable to the Higgs boson’s natural width of ~4 MeV. [...]
2023 - 4 p.
- Published in : JACoW IPAC 2023 (2023) MOPL079
Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.MOPL079
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6.
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Damping ring and transfer lines of FCC-𝑒+𝑒− injector complex
/ Spampinati, Simone (Frascati) ; De Santis, Antonio (Frascati) ; Dutheil, Yann (CERN) ; Etisken, Ozgur (Kirikkale U. ; Frascati) ; Ramjiawan, Rebecca (CERN) ; Milardi, Catia (Frascati)
The Future Circular Collider project is built around two main pillars: the construction of 100 km lepton collider running at increasing energies from the Z-pole to the t-tbar threshold (FCC-ee) followed by a hadron collider in the same tunnel (FCC-hh) to explore unprecedented energy frontier.The realization of FCC-ee relies on a very challenging injector complex that should provide the highest ever realized source of positrons, which will serve the first phase of the collider operations (Z-pole). In this contribution the relevant aspects related to the damping of the high-emittance beam coming from the positron source and the transport of the damped beam within the different LINAC of the injector complex are presented and discussed..
2023 - 4 p.
- Published in : JACoW IPAC 2023 (2023) MOPA112
Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.MOPA112
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First Optics Design for a Transverse Monochromatic Scheme for the Direct S-Channel Higgs Production at FCC-ee Collider
/ Jiang, Hongping (Harbin Inst. Tech. ; IJCLab, Orsay) ; Faus-Golfe, Angeles (IJCLab, Orsay) ; Oide, Katsunobu (KEK, Tsukuba) ; Zhang, Zhandong (Beijing, Inst. High Energy Phys. ; IJCLab, Orsay) ; Zimmermann, Frank (CERN)
The FCC-ee collider baseline foresees four different energy operation modes: Z, WW, H(ZH) and ttbar. An optional fifth mode, called s-channel Higgs production mode, could allow the measurement of the electron Yukawa coupling, in dedicated runs at 125 GeV centre-of-mass energy, provided that the centre-of-mass energy spread, can be reduced by at least an order of magnitude (5-10 MeV). [...]
2022 - 3 p.
- Published in : JACoW IPAC 2022 (2022) 1878-1880
Fulltext: PDF;
In : 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.1878-1880
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8.
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Status and Challenges for FCC-ee
/ Benedikt, Michael (CERN) ; Oide, Katsunobu (CERN) ; Zimmermann, Frank (CERN) ; Bogomyagkov, Anton (Novosibirsk, IYF) ; Levichev, Eugene (Novosibirsk, IYF) ; Migliorati, Mauro (Rome U.) ; Wienands, Uli (KIPAC, Menlo Park)
We report the design status and beam dynamics challenges for the electron-positron branch of the Future Circular Collider (FCC) study, as of August 2015. [...]
arXiv:1508.03363.
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2015. - 12 p.
Preprint - Full text
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Update in the optics design of monochromatization interaction region for direct Higgs s-channel production at FCC-ee
/ Zhang, Zhandong (Beijing, Inst. High Energy Phys. ; IJCLab, Orsay ; Beijing, GUCAS) ; Faus-Golfe, Angeles (IJCLab, Orsay) ; Jiang, Hongping (Unlisted, CN) ; Bai, Bowen (Harbin Inst. Tech.) ; Raimondi, Pantaleo (Fermilab) ; Zimmermann, Frank (CERN) ; Oide, Katsunobu (U. Geneva (main) ; KEK, Tsukuba)
The FCC-ee could allow the measurement of the electron Yukawa coupling via direct Higgs s-channel production at ~125 GeV centre-of-mass (CM) energy, provided that the CM energy spread of this channel, can be reduced to about 5–10 MeV to be comparable to the width of the standard model Higgs boson. The natural collision-energy spread at 125 GeV, due only to synchrotron radiation (SR), is about 50 MeV. [...]
FERMILAB-CONF-24-0094-PIP2.-
2024 - 4 p.
- Published in : JACoW IPAC 2024 (2024) WEPR21
Fulltext: fulltext - PDF; document - PDF; External links: Fulltext; Fulltext
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.WEPR21
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10.
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Target Studies for the FCC-ee Positron Source
/ Alharthi, F (IJCLab, Orsay) ; Bandiera, L (INFN, Ferrara ; Ferrara U.) ; Chaikovska, I (IJCLab, Orsay) ; Chehab, R (IJCLab, Orsay) ; Diefenbach, J (Helmholtz Inst., Mainz) ; Khomyshyn, O (Taras Shevchenko U.) ; Klekots, D (Taras Shevchenko U.) ; Lauth, W (Helmholtz Inst., Mainz) ; Mazzolari, A (INFN, Ferrara ; Ferrara U.) ; Mytrochenko, V (Kharkov, KIPT) et al.
FCC-ee injector study foresees 3.5~nC electron and positron bunches with 200 Hz repetition and 2 bunches per linac pulse at 6~GeV extraction energy. Regarding the possible options of positron production, we retain both of the conventional amorphous target and the hybrid target options. [...]
2022 - 4 p.
- Published in : JACoW IPAC 2022 (2022) 1979-1982
Fulltext: PDF;
In : 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.1979-1982
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