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1.
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Experimental validation of parallel quadrupole beam-based alignment at KARA
/ Goffing, C (Cracow, INP ; KIT, Karlsruhe) ; Blomley, E (KIT, Karlsruhe) ; Keintzel, J (Cracow, INP) ; Mochihashi, A (KIT, Karlsruhe) ; Müller, A S (KIT, Karlsruhe) ; Schreiber, P (KIT, Karlsruhe) ; Schuh, M (KIT, Karlsruhe) ; Steinmann, J L (KIT, Karlsruhe) ; Zimmermann, F (Cracow, INP)
The Karlsruhe Research Accelerator (KARA), a synchrotron light source and test facility, at the Karlsruhe Institute of Technology (KIT), offers excellent conditions for testing different Beam-Based Alignment (BBA) approaches. Classical BBA approaches estimate the offset between the magnet and the closest BPM for one magnet at a time, and the required time for the BBA scales linearly with the number of magnets. [...]
2025 - 7 p.
- Published in : J. Phys. : Conf. Ser.: 3094 (2025) , no. 1, pp. 012041
Fulltext: PDF;
In : International Particle Accelerator Conference (IPAC'25), Taipei, Taiwan, 1-6 June 2025, pp.012041
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2.
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Modelling Resonant Depolarisation
/ Kiel, C (Ecole Polytechnique, Lausanne) ; Keintzel, J (CERN) ; Zimmermann, F (CERN)
For the FCC-ee collider, it is planned to regularly (in 15 minute intervals) measure the average beam energy of the circulating electron and positron beams with a relative precision of 10$^{-6}$ or better, using the method of resonant depolarisation with pre-polarised pilot bunches. In this article, we study basic systematic effects and ultimate uncertainties that may arise in this kind of measurement. [...]
2025 - 7 p.
- Published in : J. Phys. : Conf. Ser. 3094 (2025) 012003
Fulltext: PDF;
In : International Particle Accelerator Conference (IPAC'25), Taipei, Taiwan, 1-6 June 2025, pp.012003
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3.
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Updated monochromatization Interaction Region optics design for FCC-ee GHC lattice
/ Korsun, A (IJCLab, Orsay) ; Faus-Golfe, A (IJCLab, Orsay) ; Zhang, Z (IJCLab, Orsay) ; Zimmermann, F (CERN) ; Oide, K (U. Geneva (main) ; KEK, Tsukuba) ; Raimondi, P (Fermilab)
Determining Yukawa couplings of the Higgs boson is one of the most fundamental and outstanding measurements since its discovery. The FCC-ee, owing to its exceptionally high-integrated luminosity, offers the unique opportunity to measure the electron Yukawa coupling through s-channel Higgs production at 125 GeV centre-of-mass (CM) energy, provided that the CM energy spread can be reduced from 50 MeV to a level comparable to the Higgs bosons’ natural width of 4.1 MeV. [...]
FERMILAB-CONF-25-0417.-
2025 - 4 p.
- Published in : JACoW IPAC 2025 (2025) 402-405
Fulltext: PDF; External links: Fulltext; Fulltext
In : International Particle Accelerator Conference (IPAC'25), Taipei, Taiwan, 1-6 June 2025, pp.402-405
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4.
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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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5.
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Étude de faisabilité du Futur Collisionneur Circulaire – Rapport, Volume 3 : Génie civil, Implantation et Durabilité
/ Benedikt, Michael (CERN) ; Zimmermann, Frank (CERN) ; Auchmann, Bernhard (CERN) ; Bartmann, Wolfgang (CERN) ; Burnet, Jean-Paul (CERN) ; Carli, Christian (CERN) ; Chance, Antoine ; Craievich, Paolo ; Giovannozzi, Massimo (CERN) ; Grojean, Christophe (Humboldt University of Berlin (DE)) et al.
Le volume 3 du rapport de faisabilité du FCC présente les études relatives au génie civil, à l’élaboration d’un scénario d’implantation du projet ainsi qu’aux aspects environnementaux et de durabilité. Le rapport détaille les améliorations itératives apportées depuis 2018 aux concepts de génie civil, en tenant compte des conditions du sous-sol, des besoins des accélérateurs et des expériences, ainsi que des considérations territoriales. [...]
CERN-FCC-ACC-2025-0008.-
Geneva : CERN, 2025 - 382.
Fulltext: PDF;
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6.
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Status of the FCC-ee interaction region design
/ Boscolo, Manuela (Frascati) ; Palla, Fabrizio (INFN, Pisa) ; Ammirabile, Gherardo (INFN, Pisa) ; Andre, Kevin D J (CERN) ; Baldinelli, Giorgio (INFN, Perugia ; Perugia U.) ; de Sousa, Patricia Borges (CERN) ; Bosi, Filippo (INFN, Pisa) ; Broggi, Giacomo (Frascati ; CERN ; U. Rome La Sapienza (main)) ; Bruce, Roderik (CERN) ; Burkhardt, Helmut (CERN ; Freiburg U.) et al.
This paper presents a comprehensive overview of the Machine Detector Interface (MDI) design developed for the FCC-ee Feasibility Study. It highlights novel studies related to the lightweight interaction region, including a mechanical model of the vacuum chambers, integration of the vertex detector, the MDI alignment system, and assessments of machine-induced backgrounds. [...]
2025 - 67 p.
- Published in : EPJ Tech. Instrum. 12 (2025) 4
Fulltext: PDF;
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8.
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$μ$LHC: Antimuon Ring and HL-LHC based $μ^+p$ Collider
/ Akturk, D. (TOBB ETU, Ankara) ; Canbay, A. C. (Ankara U.) ; Dagistanli, H. (Unlisted, TR) ; Dagli, B. (TOBB ETU, Ankara) ; Kaya, U. (Ankara U., Inst. Accel. Technol.) ; Ketenoglu, B. (Ankara U.) ; Kilic, A. (Uludag U.) ; Kocak, F. (Uludag U.) ; Ozturk, A. (Unlisted, TR) ; Sultansoy, S. (TOBB ETU, Ankara) et al.
Conceptual design and performance evaluation of HL-LHC based antimuon-proton collider ($\mu$LHC) are presented. [...]
arXiv:2506.15445.
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2025 - 22.
Fulltext
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9.
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Investigations in turn-by-turn optics measurements 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) ; Tomas, Rogelio (CERN)
The Karlsruhe Research Accelerator (KARA) is a synchrotron light source user and test facility, operating at an electron beam energy ranging from 0.5 to 2.5 GeV. Performing optics measurements and comparing with the machine model promises an improved understanding of the lattice and the underlying beam dynamics. [...]
2024 - 4 p.
- Published in : JACoW IPAC 2024 (2024) TUPG33
Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.TUPG33
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10.
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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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