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1.
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Optimized physics performance evaluation of monochromatization interaction region optics for direct $s$-channel Higgs production at FCC-ee
/ Zhang, Z (IJCLab, Orsay) ; Faus-Golfe, A (IJCLab, Orsay) ; Korsun, A (IJCLab, Orsay) ; d'Enterria, D (CERN) ; Zimmermann, F (CERN) ; Jiang, H (Lancaster U. (main)) ; Bai, B (Harbin Inst. Tech.) ; Ruan, M (Beijing, Inst. High Energy Phys.) ; Raimondi, P (Fermilab) ; Oide, K (U. Geneva (main) ; SOLEIL, Saint-Aubin ; KEK, Tsukuba)
The measurement of electron Yukawa coupling ($y_{e}$) via direct $s$-channel Higgs production at $\sim$125 GeV centre-of-mass (CM) energy is significantly facilitated at the FCC-ee, provided that the CM energy spread can be reduced to a level comparable to the natural width of the Higgs boson. This reduction is possible through the “monochromatization” concept, which involves generating opposite correlations between spatial position and energy deviation in the colliding beams. [...]
FERMILAB-CONF-25-0448.-
2025 - 4 p.
- Published in : JACoW IPAC 2025 (2025) 406-409
Fulltext: PDF; External links: Fulltext; Fulltext
In : International Particle Accelerator Conference (IPAC'25), Taipei, Taiwan, 1-6 June 2025, pp.406-409
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2.
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Futur collisionneur circulaire—Rapport d’étude de faisabilité, volume 3 : Génie civil, implantation et durabilité
/ Benedikt, M. (CERN) ; Zimmermann, F. (CERN) ; Auchmann, B. (CERN ; PSI, Villigen) ; Bartmann, W. (CERN) ; Burnet, J.P. (CERN) ; Carli, C. (CERN) ; Chancé, A. (IRFU, Saclay) ; Craievich, P. (PSI, Villigen) ; Giovannozzi, M. (CERN) ; Grojean, C. (DESY ; Humboldt U., Berlin) et al.
CERN-FCC-ACC-2025-0003-FR.-
Geneva : CERN, 2025-03 - 357 p.
- Published in : 10.17181/CERN.WE26.NJC0
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3.
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Future Circular Collider Feasibility Study Report Volume 2 : Accelerators, technical infrastructure and safety
/ Benedikt, M. (ed.) (CERN) ; Zimmermann, F. (CERN) ; Auchmann, B. (CERN ; PSI, Villigen) ; Bartmann, W. (CERN) ; Burnet, J.P. (CERN) ; Carli, C. (CERN) ; Chancé, A. (IRFU, Saclay) ; Craievich, P. (PSI, Villigen) ; Giovannozzi, M. (CERN) ; Grojean, C. (DESY ; Humboldt U., Berlin) et al.
In response to the 2020 Update of the European Strategy for Particle Physics, the Future Circular Collider (FCC) Feasibility Study was launched as an international collaboration hosted by CERN. The FCC ‘integrated programme’, described in this report, in a first stage consists of a highest-luminosity electron-positron collider, FCC-ee, serving as Higgs, top and electroweak factory, with a subsequent energy-frontier proton-proton collider, FCC-hh, as the second stage. The FCC-ee is designed to operate at four baseline centre-of-mass energies, corresponding to the Z pole, the WW pair production threshold, the ZH production peak, and the top/anti-top production threshold, always delivering the highest possible luminosities to four experiments. [...]
arXiv:2505.00274; CERN-FCC-ACC-2025-0004.-
Geneva : CERN, 2025 - 627 p.
Fulltext: CERN-FCC-ACC-2025-0004 - PDF; 2505.00274 - PDF;
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4.
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Future Circular Collider Feasibility Study Report Volume 3 : Civil Engineering, Implementation and Sustainability
/ Benedikt, M. (CERN) ; Zimmermann, F. (CERN) ; Auchmann, B. (CERN ; PSI, Villigen) ; Bartmann, W. (CERN) ; Burnet, J.P. (CERN) ; Carli, C. (CERN) ; Chancé, A. (IRFU, Saclay) ; Craievich, P. (PSI, Villigen) ; Giovannozzi, M. (CERN) ; Grojean, C. (DESY ; Humboldt U., Berlin) et al.
Volume 3 of the FCC Feasibility Report presents studies related to civil engineering, the development of a project implementation scenario, and environmental and sustainability aspects. The report details the iterative improvements made to the civil engineering concepts since 2018, taking into account subsurface conditions, accelerator and experiment requirements, and territorial considerations. [...]
arXiv:2505.00273; CERN-FCC-ACC-2025-0003.-
Geneva : CERN, 2025-03 - 357 p.
- Published in : 10.17181/CERN.I26X.V4VF
Fulltext: CERN-FCC-ACC-2025-0003 - PDF; 2505.00273 - PDF;
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5.
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Future Circular Collider Feasibility Study Report Volume 1 : Physics and Experiments
/ Benedikt, M. (CERN) ; Zimmermann, F. (CERN) ; Auchmann, B. (CERN ; PSI, Villigen) ; Bartmann, W. (CERN) ; Burnet, J.P. (CERN) ; Carli, C. (CERN) ; Chancé, A. (IRFU, Saclay) ; Craievich, P. (PSI, Villigen) ; Giovannozzi, M. (CERN) ; Grojean, C. (DESY ; Humboldt U., Berlin) et al.
Volume 1 of the FCC Feasibility Report presents an overview of the physics case, experimental programme, and detector concepts for the Future Circular Collider (FCC). This volume outlines how the FCC would address some of the most profound open questions in particle physics, from precision studies of the Higgs and EW bosons and of the top quark, to the exploration of physics beyond the Standard Model. [...]
arXiv:2505.00272; CERN-FCC-PHYS-2025-0002.-
Geneva : CERN, 2025 - 290 p.
- Published in : 10.17181/CERN.9DKX.TDH9
Fulltext: CERN-FCC-PHYS-2025-0002 - PDF; 2505.00272 - PDF;
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6.
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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, $e^+ e^- \rightarrow \text{H}$, at a centre-of-mass (CM) energy of ~125 GeV. This measurement is significantly facilitated if the CM energy spread of $e^+ e^-$ collisions can be reduced to a level comparable to the natural width of the Higgs boson, $\Gamma_{\text{H}}$ = 4.1 MeV, without substantial loss in luminosity [...]
arXiv:2411.04210; FERMILAB-PUB-24-0827-PIP2.-
2025-01-29
- Published in : Nucl. Instrum. Methods Phys. Res., A 1073 (2025) 170268
Fulltext: 2411.04210 - PDF; 89013f3ec2665db696dda59a77046c7e - PDF; 2118f06119748fe426add7fecbd26c40 - PDF; External link: Fermilab Accepted Manuscript
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7.
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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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8.
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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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9.
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Optimized injector schemes for FCC-ee positron production
/ Bai, B (Beijing, Inst. High Energy Phys. ; IJCLab, Orsay ; Beijing, GUCAS) ; Faus-Golfe, A (IJCLab, Orsay) ; Han, Y (IJCLab, Orsay) ; Chaikovska, I (IJCLab, Orsay) ; Zhou, Z (Beijing, Inst. High Energy Phys.) ; Chi, Y (Beijing, Inst. High Energy Phys.) ; Oide, K (CERN ; KEK, Tsukuba) ; Zimmermann, F (CERN)
Injectors and in particular the positron production systems are a crucial element in linear and circular colliders. The proposed FCC-ee injector linac accelerates both electrons and positrons up to 6 GeV in order to be injected into the Pre-Booster Ring (PBR) with a high intensity of 3.5 nC per bunch for the Z running mode. [...]
2021 - 14 p.
- Published in : Nucl. Instrum. Methods Phys. Res., A 1009 (2021) 165463
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10.
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Optics design and beam dynamics simulation for a VHEE radiobiology beam line at PRAE accelerator
/ Faus-Golfe, Angeles (Orsay, LAL) ; Bai, Bowen (Orsay, LAL ; Beijing, Inst. High Energy Phys.) ; Delorme, Rachel (IMNC, Orsay) ; Dosanjh, Manjit (CERN) ; Duchesne, Patricia (Orsay, IPN) ; Favaudon, Vincent (Inst. Curie, Paris) ; Fouillade, Charles (Inst. Curie, Paris) ; Han, Yanliang (Orsay, LAL) ; Poortmans, Philip (Inst. Curie, Paris) ; Pouzoulet, Frederic (Inst. Curie, Paris) et al.
The Platform for Research and Applications with Electrons (PRAE) is a multidisciplinary R&D; facility gathering subatomic physics, instrumentation, radiobiology and clinical research around a high-performance electron accelerator with beam energies up to 70 MeV. In this paper we report the complete optics design and performance evaluation of a Very High Energy Electron (VHEE) innovative radiobiology study, in particular by using Grid mini-beam and FLASH methodologies, which could represent a major breakthrough in Radiation Therapy (RT) treatment modality..
CERN-ACC-2019-229.-
2019 - 4 p.
- Published in : 10.18429/JACoW-IPAC2019-THPMP002
Preprint: PDF;
In : 10th International Particle Accelerator Conference, Melbourne, Australia, 19 - 24 May 2019, pp.THPMP002
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