CERN Accelerating science

R&D and Studies

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Accelerating cavity and higher order mode coupler design for the Future Circular Collider / Gorgi Zadeh, Shahnam
CERN-THESIS-2020-358 - : Universität Rostock , 2021-05-11.

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High-Temperature Superconductor Coatings for Beam Impedance Reduction in Particle Colliders: Nonlinear Effects / Calatroni, Sergio (CERN) ; Vaglio, Ruggero (CNR-SPIN, Naples ; INFN, Naples)
Coating of surfaces facing particle beams with hightemperature superconductors (HTS) for reducing the beam coupling impedance is being considered for the next generation of hadron colliders, such as the FCC-hh at CERN, where HTS would be exposed to the high-frequency wakefields generated by the particle bunches and to the strong field of the steering magnets. In this frame, we present a simple model for the calculation of the microwave response of HTS exposed to a strong external magnetic field, which takes into account the nonlinearity of the pinning potential of the vortex lattice. [...]
2021 - 8 p. - Published in : IEEE Trans. Appl. Supercond. 31 (2021) 3500208 Fulltext: PDF;

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Self-Modulation Development of a Proton Bunch in Plasma / Bachmann, Anna-Maria
CERN-THESIS-2021-094 - : mediaTUM, 2021-07-16.

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Considerations Towards a High Field Accelerator Magnets Programme Part I: Motivation, Goals, Challenges and Program Drivers / Bottura, Luca (CERN)
The Large Hadron Collider (LHC) at CERN can be regarded as the ultimate collider built with Nb-Ti magnets. [...]
- 2021. - 21 p.

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First demonstration of the use of crab cavities on hadron beams / Calaga, R (CERN) ; Alekou, A (Manchester U.) ; Antoniou, F (CERN) ; Appleby, R B (Manchester U.) ; Arnaudon, L (CERN) ; Artoos, K (CERN) ; Arduini, G (CERN) ; Baglin, V (CERN) ; Barriere, S (CERN) ; Bartosik, H (CERN) et al.
Many future particle colliders require beam crabbing to recover geometric luminosity loss from the nonzero crossing angle at the interaction point (IP). A first demonstration experiment of crabbing with hadron beams was successfully carried out with high energy protons. [...]
2021 - 6 p. - Published in : Phys. Rev. Accel. Beams 24 (2021) 062001 Fulltext: PDF;

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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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Muon Collider. A Path to the Future? / Schulte, Daniel (CERN) ; Delahaye, Jean-Pierre (CERN) ; Diemoz, Marcella (INFN, Rome) ; Long, Ken (Imperial Coll., London) ; Mansoulié, Bruno (IRFU, Saclay) ; Patrone, Nadia (INFN, Turin) ; Rivkin, Lenny (Ecole Polytechnique, Lausanne ; PSI, Villigen) ; Skrinsky, Alexander M (Novosibirsk, IYF) ; Wulzer, Andrea (CERN ; EPFL, Lausanne, LPTP ; Padua U.)
A high-energy muon collider is receiving renewed attention as a possible frontier-exploration machine. Daniel Schulte, Nadia Pastrone and Ken Long describe the possible paths ahead..
SISSA, 2019 - 7 p. - Published in : PoS EPS-HEP2019 (2020) 004 Fulltext: PDF; External link: CERN Courier Article
In : European Physical Society Conference on High Energy Physics (EPS-HEP) 2019, Ghent, Belgium, 10 - 17 Jul 2019, pp.004

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Preliminary Design of the NB$_3$Sn $cos$ $\theta$ Short Model for the FCC / Pampaloni, Alessandra (INFN, Genoa) ; Bellomo, Giovanni (Milan U. ; LASA, Segrate) ; Burioli, Sergio (INFN, Genoa ; U. Genoa) ; De Matteis, Ernesto (LASA, Segrate) ; Fabbricatore, Pasquale (INFN, Genoa) ; Farinon, Stefania (INFN, Genoa) ; Lackner, Friedrich (CERN) ; Levi, Filippo (INFN, Genoa ; U. Genoa) ; Mariotto, Samuele (Milan U. ; LASA, Segrate) ; Musenich, Riccardo (INFN, Genoa) et al.
The next generation particle accelerators will need to increase by an order of magnitude the center-of-mass energy: a viable solution is a 100 TeV circular collider, temporarily called Future Circular Collider (FCC). To achieve this goal, a new generation of double aperture superconducting magnets, capable of generating a high quality, stable 16 T magnetic field in a 50 mm bore is being developed. [...]
2021 - 5 p. - Published in : IEEE Trans. Appl. Supercond. 31 (2021) 4900905

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Study of Superconducting Magnetization Effects and 3D Electromagnetic Analysis of the Nb$_3$Sn cos$\theta$ Short Model for FCC / Valente, Riccardo Umberto (U. Rome La Sapienza (main) ; LASA, Segrate) ; Bellomo, G (Milan U. ; LASA, Segrate) ; Burioli, S (U. Genoa ; INFN, Genoa) ; Matteis, E De (LASA, Segrate) ; Fabbricatore, P (INFN, Genoa) ; Farinon, S (INFN, Genoa) ; Lackner, F (CERN) ; Levi, F (U. Genoa ; INFN, Genoa) ; Mariotto, S (Milan U. ; LASA, Segrate) ; Musenich, R (INFN, Genoa) et al.
The Falcon Dipole (Future Accelerator post-LHC Cos-theta Optimized $\rm {Nb_3Sn}$ Dipole) is a single aperture $\rm {Nb_3Sn}$cos-theta dipole short model in the framework of the Future Circular Collider (FCC) project. The Italian Institute of Nuclear Physics (INFN), in collaboration with CERN, is in charge of designing and constructing the magnet, which is a crucial step towards the construction of High Field $\rm {Nb_3Sn}$magnets suitable for a post LHC collider. [...]
2021 - 5 p. - Published in : IEEE Trans. Appl. Supercond. 31 (2021) 4002205

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Background Processes Affecting the Machine-Detector Interface at FCC-ee With Focus on Synchrotron Radiation at 182.5 Gev Beam Energy / Luckhof, Marian
Synchrotron radiation is a significant background source at circular lepton colliders [...]
CERN-THESIS-2020-335 - 171 p.

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PBC - Physics Beyond Colliders (30)
Future Circular Collider Documents (186)
Muon Collider study (2)