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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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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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3.
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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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4.
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Development of Collimation Simulations for the FCC-ee
/ Abramov, Andrey (CERN) ; Bruce, Roderik (CERN) ; Carlier, Felix (Ecole Polytechnique, Lausanne) ; Hofer, Michael (CERN) ; Iadarola, Giovanni (CERN) ; Nevay, Laurence (JAI, UK) ; Pieloni, Tatiana (Ecole Polytechnique, Lausanne) ; Rakic, Milica (Ecole Polytechnique, Lausanne) ; Redaelli, Stefano (CERN) ; White, Simon (ESRF, Grenoble)
A collimation system is under study for the FCC-ee to protect the machine from the multi-MJ electron and positron beams and limit the backgrounds to the detectors. One of the key aspects of the collimation system design is the setup of simulation studies combining particle tracking and scattering in the collimators. [...]
2022 - 4 p.
- Published in : JACoW IPAC 2022 (2022) 1718-1721
Fulltext: PDF;
In : 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.1718-1721
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5.
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Building the impedance model of a real machine
/ Salvant, Benoit (CERN) ; Amorim, David (CERN ; Grenoble, INP) ; Antipov, Sergey (CERN) ; Arsenyev, Sergey (CERN) ; Beck, Mario (CERN) ; Biancacci, Nicolo (CERN) ; Brüning, Oliver (CERN) ; Campelo, Jose Enrique (CERN) ; Carideo, Emanuela (CERN) ; Caspers, Fritz (CERN) et al.
A reliable impedance model of a particle accelerator can be built by combining the beam coupling impedances of all the components. This is a necessary step to be able to evaluate the machine performance limitations, identify the main contributors in case an impedance reduction is required, and study the interaction with other mechanisms such as optics nonlinearities, transverse damper, noise, space charge, electron cloud, beam-beam (in a collider). [...]
CERN-ACC-2019-098.-
2019 - 6 p.
- Published in : 10.18429/JACoW-IPAC2019-WEYPLS1
Fulltext from publisher: PDF;
In : 10th International Particle Accelerator Conference, Melbourne, Australia, 19 - 24 May 2019, pp.WEYPLS1
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6.
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Planck 2018 results. I. Overview and the cosmological legacy of Planck
/ Planck Collaboration
The European Space Agency's Planck satellite, which was dedicated to studying the early Universe and its subsequent evolution, was launched on 14 May 2009. It scanned the microwave and submillimetre sky continuously between 12 August 2009 and 23 October 2013, producing deep, high-resolution, all-sky maps in nine frequency bands from 30 to 857GHz. [...]
arXiv:1807.06205.-
2020-09-01 - 56 p.
- Published in : Astron. Astrophys. 641 (2020) A1
Fulltext: 1807.06205 - PDF; arXiv:1807.06205 - PDF;
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7.
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8.
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Constraining Extended Gamma-ray Emission from Galaxy Clusters
/ Han, Jiaxin (Shanghai, Astron. Observ. ; Beijing, GUCAS ; Durham U.) ; Frenk, Carlos S. (Durham U.) ; Eke, Vincent R. (Durham U.) ; Gao, Liang (Durham U. ; NAOC, Beijing) ; White, Simon D.M. (Garching, Max Planck Inst.) ; Boyarsky, Alexey (Leiden U. ; BITP, Kiev) ; Malyshev, Denys (BITP, Kiev) ; Ruchayskiy, Oleg (CERN)
Cold dark matter models predict the existence of a large number of substructures within dark matter halos. If the cold dark matter consists of weakly interacting massive particles, their annihilation within these substructures could lead to diffuse GeV emission that would dominate over the annihilation signal of the host halo. [...]
arXiv:1207.6749; CERN-PH-TH-2012-236; CERN-PH-TH-2012-236.-
2012 - 15 p.
- Published in : Mon. Not. R. Astron. Soc. 427 (2012) 1651-1665
Fulltext: PDF; External link: Preprint
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9.
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10.
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Characterization of Interaction-Point Beam Parameters Using the pp Event-Vertex Distribution Reconstructed in the ATLAS Detector at the LHC
/ Bartoldus, Rainer (SLAC) ; Aracena, Ignacio (SLAC) ; Grenier, Philippe (SLAC) ; Miller, David (SLAC) ; Strauss, Emanuel (SLAC) ; Su, Dong (SLAC) ; Beringer, Juerg (LBL, Berkeley) ; Loscutoff, P (LBL, Berkeley) ; Burkhardt, Helmut (CERN) ; White, Simon (CERN) et al.
IPAC-2010-MOPEC008.-
2010 - 3 p.
- Published in : (2010) , pp. MOPEC008
Published version from JACOW: PDF;
In : 1st International Particle Accelerator Conference, Kyoto, Japan, 23 - 28 May 2010, pp.MOPEC008
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