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1.
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The status of the FCC-ee optics tuning
/ van Riesen-Haupt, Léon (Ecole Polytechnique, Lausanne) ; Franchi, Andrea (ESRF, Grenoble) ; Faus-Golfe, Angeles (IJCLab, Orsay) ; Chance, Antoine (Paris, CEA) ; Dalena, Barbara (Paris, CEA) ; Järmyr Eriksson, Carl (CERN) ; Carli, Christian (CERN) ; Garcia Jaimes, Cristobal Miguel (Ecole Polytechnique, Lausanne) ; Shatilov, Dmitry (CERN) ; Musa, Elaf (DESY) et al.
With a circumference of approximately 91 km, the Future Circular electron-positron Collider, FCC-ee, aims for unprecedented luminosities at beam energies from 45.6 to 182.5 GeV. A major challenge is reaching its design performance in the presence of magnet misalignments and field errors. [...]
2024 - 4 p.
- Published in : JACoW IPAC 2024 (2024) WEPR02
Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.WEPR02
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2.
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Review of MAD-X for FCC-ee studies
/ Simon, Guillaume (CERN ; IJCLab, Orsay) ; Faus-Golfe, Angeles (IJCLab, Orsay) ; van Riesen-Haupt, Léon (Ecole Polytechnique, Lausanne) ; De Maria, Riccardo (CERN) ; Pieloni, Tatiana (Ecole Polytechnique, Lausanne)
The design of the electron-positron Future Circular Collider (FCC-ee) challenges the requirements on optics codes (like MAD-X) in terms of accuracy, consistency, and performance. Traditionally, MAD-X uses a transport formalism by expanding the transfer map about the origin up to second order to compute optics functions and synchrotron radiation integrals in the TWISS and EMIT modules. [...]
2024 - 4 p.
- Published in : JACoW IPAC 2024 (2024) WEPR22
Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.WEPR22
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3.
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ATF2-3 hardware upgrade and new experimental results to maximize luminosity potential of linear colliders
/ Faus-Golfe, Angeles (IJCLab, Orsay) ; Aryshev, Alexander (KEK, Tsukuba) ; Lyapin, Alexey (Oxford U.) ; Kruchinin, Konstantin (KEK, Tsukuba) ; Terunuma, Nobuhiro (KEK, Tsukuba) ; Fuster-Martinez, Nuria (Valencia U., IFIC) ; Burrows, Philip (Oxford U.) ; Mazzoni, Stefano (CERN) ; Okugi, Toshiyuki (KEK, Tsukuba)
/ATF2 Collaboration
The ATF2-3 beamline is the only facility in the world for testing the Final Focus Beamline of linear colliders and is essential for the ILC and the CLIC projects. A vertical electron beam size of 41 nm (within 10% of the target), a closed-loop intra-bunch feedback of latency 133 ns, and direct stabilization of the beam position at the Interaction Point to 41 nm (limited by IP BPM resolution) have all been achieved at ATF2. [...]
2024 - 4 p.
- Published in : JACoW IPAC 2024 (2024) TUPC04
Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.TUPC04
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4.
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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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5.
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Progress of the FCC-ee optics tuning working group
/ Bauche, J (CERN) ; da Silva, T (IRFU, Saclay) ; Shatilov, D (CERN) ; Chance, A (IRFU, Saclay) ; Wu, Y (Ecole Polytechnique, Lausanne) ; Wang, Y (Beijing, Inst. High Energy Phys.) ; Tomas, Rogelio (CERN) ; Franchi, Andrea (ESRF, Grenoble) ; Faus-Golfe, Angeles (IJCLab, Orsay) ; Dalena, Barbara (IRFU, Saclay) et al.
FCC-ee is a proposed lepton collider with a circumference close to 100 km to produce an unprecedented amount of luminosity. The FCC-ee optics tuning working group is addressing one of the most critical aspects of the FCC-ee, that is the recovery of the optics design performance in presence of realistic imperfections. [...]
2023 - 4 p.
- Published in : JACoW IPAC 2023 (2023) WEPL023
Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.WEPL023
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6.
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Multipactor studies for the FCC–ee superconducting swell cavities
/ Plaçais, Adrien (LPSC, Grenoble) ; Bouly, Frédéric (LPSC, Grenoble) ; Gómez Martínez, Yolanda (LPSC, Grenoble) ; Meyer, Manon (LPSC, Grenoble) ; Faus-Golfe, Angeles (IJCLab, Orsay) ; Peauger, Franck (CERN) ; Gorgi Zadeh, Shahnam (CERN)
The Future Circular Collider (FCC) is a project of high performance particle collider. Several accelerating cavity technologies may equip it and are currently under study. [...]
2023 - 4 p.
- Published in : JACoW IPAC 2023 (2023) WEPA179
Fulltext: document - PDF; PDF small 4 - PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.WEPA179
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7.
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Power Budgets and Performance Considerations for Future Higgs Factories
/ Zimmermann, Frank (CERN) ; Belomestnykh, Sergey (Fermilab) ; Biagini, Maria (Frascati) ; Boscolo, Manuela (Frascati) ; Faus-Golfe, Angeles (IJCLab, Orsay) ; Gao, Jie (Beijing, Inst. High Energy Phys.) ; Koratzinos, Michael (PSI, Villigen ; U. Malta) ; List, Benno (DESY) ; Litvinenko, Vladimir (SUNY, Stony Brook) ; Nanni, Emilio (SLAC) et al.
A special session at eeFACT’22 reviewed the electrical power budgets and luminosity risks for eight proposed future Higgs and electroweak factories (CCC, CEPC, CERC, CLIC, FCC-ee, HELEN, ILC, and RELIC) and, in comparison, for a lepton-hadron collider (EIC) presently under construction. We report highlights of presentations and discussions..
FERMILAB-CONF-23-113-AD-TD; JLAB-ACP-23-3948.-
2023 - 6 p.
- Published in : JACoW eeFACT 2022 (2023) 256-261
Fulltext: document - PDF; 34d7f5ca7b08f5a18b631346bed0b03f - PDF; External links: Fermilab Library Server; JLab Document Server; JLab Document Server
In : 65th ICFA Advanced Beam Dynamics Workshop on High Luminosity Circular e+ e- Colliders (eeFACT2022), INFN, Frascati, Italy, 12 - 16 Sep 2022, pp.256-261
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8.
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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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9.
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10.
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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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