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Monochromatization interaction region optics design for direct s-channel Higgs production at FCC-ee
/ Zhang, Z. (Beijing, Inst. High Energy Phys. ; IJCLab, Orsay) ; Faus-Golfe, A. (IJCLab, Orsay) ; Korsun, A. (IJCLab, Orsay) ; Bai, B. (Harbin Inst. Tech.) ; Jiang, H. (Lancaster U. (main)) ; Oide, K. (Geneva U. ; KEK, Tsukuba) ; Raimondi, P. (Fermilab) ; d'Enterria, D. (CERN) ; Zhang, S. (Beijing, Inst. High Energy Phys.) ; Zhou, Z. (Beijing, Inst. High Energy Phys.) et al.
The FCC-ee offers the potential to measure the electron Yukawa coupling via direct s-channel Higgs production, e+ e- -> H, at a centre-of-mass (CM) energy of 125 GeV [...]
FERMILAB-PUB-24-0827-PIP2 ; arXiv:2411.04210.
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Fermilab Library Server - Fulltext - Fulltext
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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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Probing FCC-ee energy calibration through resonant depolarization at KARA
/ Zimmermann, Frank (CERN) ; Keintzel, Jacqueline (CERN) ; Mueller, Anke-Susanne (KIT, Karlsruhe) ; Haerer, Bastian (KIT, Karlsruhe) ; Blomley, Edmund (KIT, Karlsruhe) ; Huttel, Erhard (KIT, Karlsruhe) ; Steinmann, Johannes (KIT, Karlsruhe) ; Gethmann, Julian (KIT, Karlsruhe) ; Ruprecht, Robert (KIT, Karlsruhe) ; Pieloni, Tatiana (Ecole Polytechnique, Lausanne) et al.
The FCC-ee collider physics program requires a precise determination of the center-of-mass energy. The average energies of the two colliding beams can be measured by resonant depolarization (RDP) of polarized electron and positron bunches. [...]
2024 - 4 p.
- Published in : JACoW IPAC 2024 (2024) WEPR20
Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.WEPR20
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Resonant spin depolarization at the test facility KARA: overview of recent efforts
/ Blomley, Edmund (KIT, Karlsruhe) ; Müller, Anke-Susanne (KIT, Karlsruhe) ; Härer, B (KIT, Karlsruhe) ; Huttel, Erhard (KIT, Karlsruhe) ; Zimmermann, Frank (CERN) ; Keintzel, Jacqueline (CERN) ; Steinmann, Johannes (KIT, Karlsruhe) ; Gethmann, Julian (KIT, Karlsruhe) ; Ruprecht, Robert (KIT, Karlsruhe)
The Karlsruhe research accelerator KARA offers a setup to measure the beam energy with resonant spin depolarization. The depolarization is excited by the stripline kickers of the bunch-by-bunch feedback system and the resonant frequency is measured via change in Touschek lifetime. [...]
2024 - 4 p.
- Published in : JACoW IPAC 2024 (2024) WEPG51
Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.WEPG51
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First studies on error mitigation by interaction point fast feedback systems for FCC-ee
/ Salvesen, John (CERN ; JAI, UK) ; Zimmermann, Frank (CERN) ; Burrows, Philip (JAI, UK)
During operation, the Future Circular electron-positron Collider (FCC-ee) will be subject to vibrations from mechanical sources and ground motion, resulting in errors with respect to the closed orbit. To achieve physics performance, luminosity and beam lifetime must be kept to design specifications. [...]
2024 - 4 p.
- Published in : JACoW IPAC 2024 (2024) THPG31
Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.THPG31
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Progress in the design of the future circular collider FCC-ee interaction region
/ Boscolo, Manuela (Frascati) ; Frasca, Alessandro (CERN) ; Novokhatski, Alexander (SLAC) ; Ciarma, Andrea (Frascati) ; Lechner, Anton (CERN) ; Ilg, Armin (Zurich U.) ; Di Pasquale, Enrico (Frascati) ; Palla, Fabrizio (INFN, Pisa ; CERN) ; Bosi, Filippo (INFN, Pisa) ; Fransesini, Francesco (Frascati) et al.
We report on the latest developments for the FCC-ee interaction region design that represents a major challenge for the collider, which has to achieve extremely high luminosity over a wide range of centre-of-mass energies. The FCC-ee will host four experimental apparatuses. [...]
FERMILAB-CONF-24-0670-PIP2.-
2024 - 4 p.
- Published in : JACoW IPAC 2024 (2024) TUPC67
Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.TUPC67
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Simulated performance of FCC-ee IP tuning knobs
/ Jagabathuni, Satya Sai (CERN ; U. Geneva (main)) ; Zimmermann, Frank (CERN) ; van Riesen-Haupt, Léon (Ecole Polytechnique, Lausanne) ; Hofer, Michael (CERN) ; Carlier, Felix (Ecole Polytechnique, Lausanne)
The Future Circular electron-positron Collider (FCC-ee) is a proposed accelerator with 91 kilometres circumference that should serve as a Higgs and electroweak factory, with unprecedented luminosity. Unavoidable misalignments and field errors will generate optics errors at the interaction point (IP), whose effect will be amplified by the beam-beam collisions, which will make it challenging for the collider to reach its intended luminosity goals. [...]
2024 - 4 p.
- Published in : JACoW IPAC 2024 (2024) WEPR03
Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.WEPR03
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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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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
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Advanced accelerator concepts for dark sector searches and fast muon acceleration
/ Zimmermann, Frank (CERN) ; Pukhov, Alexander (Heinrich Heine U., Dusseldorf) ; Badiali, Chiara (Lisbon U.) ; Schulte, Daniel (CERN) ; Franchetti, Giuliano (Darmstadt, GSI ; Frankfurt U.) ; Krasny, Mieczyslaw (LPNHE, Paris) ; Crivelli, Paolo (Zurich, ETH) ; Ischebeck, Rasmus (PSI, Villigen) ; Dadashi Motlagh, Raziyeh (PSI, Villigen ; Ecole Polytechnique, Lausanne) ; Moebius, Silke (Bern U.) et al.
Dielectric laser acceleration (DLA) is a promising approach to accelerate single electrons at a high repetition rate to GeV energies, for indirect dark matter searches. Relevant concepts include the integration of the dielectric structure inside the laser oscillator. [...]
2024 - 4 p.
- Published in : JACoW IPAC 2024 (2024) MOPR17
Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.MOPR17
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