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1.
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Experimental Investigations on the High-Intensity Effects Near the Half-Integer Resonance in the PSB
/ Prebibaj, Tirsi (CERN) ; Antoniou, Fanouria (CERN) ; Asvesta, Foteini (CERN) ; Bartosik, Hannes (CERN) ; Franchetti, Giuliano (Darmstadt, GSI)
Space charge effects are the main limitation for the brightness performance of the Proton Synchrotron Booster (PSB) at CERN. Following the upgrades of the LHC Injectors Upgrade (LIU) project, the PSB delivered unprecedented brightness even exceeding the projected target parameters. [...]
2024 - 4 p.
- Published in : JACoW HB 2023 (2024) 499-502
Fulltext: PDF;
In : 68th ICFA Advanced Beam Dynamics workshop on high-Intensity and High-Brightness Hadron Beams (HB 2023), CERN, Geneva, Switzerland, 9 - 13 Oct 2023, pp.499-502
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2.
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Tailoring transverse beam characteristics with the new CERN PS Booster charge-exchange injection system
/ Renner, E (TU Vienna) ; Albright, S (CERN) ; Antoniou, F (CERN) ; Asvesta, F (CERN) ; Bartosik, H (CERN) ; Bracco, C (CERN) ; Di Giovanni, G P (CERN) ; Mikulec, B (CERN) ; Prebibaj, T (CERN) ; Skowronski, P (CERN) et al.
A key aspect of the LHC Injectors Upgrade project is the connection of the PSB to the newly built Linac4 and the related installation of a new 160\,MeV charge-exchange injection system. The new injection system was commissioned in winter 2020/21 and is now used operationally to tailor the transverse characteristics for the various beam types at CERN, such as high-intensity fixed target beams, LHC single bunch beams, and high-brightness beams for LHC. [...]
2024 - 7 p.
- Published in : J. Phys. : Conf. Ser.: 2687 (2024) , no. 5, pp. 052031
- Published in : JACoW IPAC: 2023 (2023) , pp. TUPM118
Fulltext: PublicationJACoW - PDF; PublicationIOP - PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.052031
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3.
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Interplay of Space Charge, Intra-Beam Scattering and Synchrotron Radiation in the CLIC Damping Rings
/ Zampetakis, Michail (CERN ; Crete U.) ; Antoniou, Fanouria (CERN) ; Asvesta, Foteini (CERN) ; Bartosik, Hannes (CERN) ; Papaphilippou, Yannis (CERN)
Future ultra-low emittance rings for electron/positron colliders require extremely high beam brightness and can thus be limited by collective effects. In this paper, the interplay of effects such as synchrotron radiation, intra-beam scattering (IBS) and space charge in the vicinity of excited betatron resonances is assessed. [...]
arXiv:2308.02196.-
2024-06-01 - 20 p.
- Published in : Phys. Rev. Accel. Beams: 27 (2024) , no. 6, pp. 064403
Fulltext: PDF;
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4.
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Interplay of Space Charge and Intra-Beam Scattering in the LHC ion injector chain
/ Zampetakis, M. (CERN ; Crete U.) ; Antoniou, F. (CERN) ; Asvesta, F. (CERN) ; Bartosik, H. (CERN) ; Papaphilippou, Y. (CERN) ; Saá Hernández, A. (Santiago de Compostela U., IGFAE)
The ion injectors of the CERN accelerator chain, in particular the Super Proton Synchrotron (SPS) and the Low Energy Ion Ring (LEIR), operate in a strong Space Charge (SC) and Intra-Beam Scattering (IBS) regime, which can degrade beam quality. [...]
arXiv:2310.03504.
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13 p.
Fulltext
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5.
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Status of the High Energy Booster of the lepton option of the future circular collider
/ Dalena, B (IRFU, Saclay) ; Chance, A (IRFU, Saclay) ; Antoniou, F (CERN) ; Etisken, O (Bogazici U.) ; Mashal, A (IPM, Tehran) ; Raubenheimer, T (SLAC) ; Zampetakis, M (CERN) ; Zimmermann, F (CERN)
In the context of the FCC IS European study, which investigates the feasibility of a 100 km circular 𝑒+𝑒− collider for the future high-energy physics research, we present the status of the High Energy Booster (HEB) ring. In order to perform precision measurements of the Z, W and H bosons, as well as of the top quark, unprecedented luminosities are required. [...]
2022 - 6 p.
- Published in : PoS: ICHEP2022, pp. 042
Fulltext: PDF;
In : 41st International Conference on High Energy Physics (ICHEP 2022), Bologna, Italy, 6 - 13 Jul 2022, pp.042
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6.
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7.
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Suppression of Crab Cavity Noise Induced Emittance Growth by Transverse Beam Coupling Impedance
/ Triantafyllou, Natalia (Liverpool U. ; CERN) ; Antoniou, Fanouria (CERN) ; Bartosik, Hannes (CERN) ; Baudrenghien, Philippe (CERN) ; Buffat, Xavier (CERN) ; Calaga, Rama (CERN) ; Mastoridis, Themis (Cal. Poly.) ; Papaphilippou, Yannis (CERN) ; Wolski, Andrzej (Liverpool U.)
Crab cavities are a key component of the High Luminosity LHC (HL-LHC) upgrade, as they aim to mitigate the luminosity reduction induced by the crossing angle. Two superconducting crab cavities (CCs) were installed in the Super Proton Synchrotron (SPS) at CERN in 2018 to demonstrate their operation in a proton machine for the first time. [...]
2022 - 4 p.
- Published in : JACoW IPAC 2022 (2022) 1659-1662
Fulltext: PDF;
In : 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.1659-1662
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8.
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Interplay between Space Charge and Intra-beam Scattering for the CERN Ion Injectors
/ Zampetakis, Michail (CERN) ; Antoniou, Fanouria (CERN) ; Asvesta, Foteini (CERN) ; Bartosik, Hannes (CERN) ; Papaphilippou, Yannis (CERN)
The CERN ion injectors, SPS and LEIR, operate in a strong space charge and intra-beam scattering regime, which can lead to degradation of their beam performance. To optimize machine performance requires thus to study the interplay of these two effects in combined space charge and intrabeam scattering tracking simulations. [...]
2022 - 4 p.
- Published in : JACoW IPAC 2022 (2022) 214-217
Fulltext: PDF;
In : 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.214-217
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9.
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Improved Low-Energy Optics Control for Transverse Emittance Preservation at the CERN Proton Synchrotron
/ Van Goethem, Wietse (CERN) ; Antoniou, Fanouria (CERN) ; Asvesta, Foteini (CERN) ; Bartosik, Hannes (CERN) ; Huschauer, Alexander (CERN)
Preservation of the transverse emittances across the CERN accelerator chain is an important requirement for beams produced for the Large Hadron Collider (LHC). In the CERN Proton Synchrotron (PS), high brightness LHC-type beams are stored on a long flat bottom for up to 1.2 seconds. [...]
2022 - 4 p.
- Published in : JACoW IPAC 2022 (2022) 507-510
Fulltext: PDF;
In : 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.507-510
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10.
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Zero Dispersion Optics to Improve Horizontal Emittance Measurements at the CERN Proton Synchrotron
/ Van Goethem, Wietse (CERN ; Goethe U., Frankfurt (main)) ; Antoniou, Fanouria (CERN) ; Asvesta, Foteini (CERN) ; Bartosik, Hannes (CERN) ; Huschauer, Alexander (CERN)
In modern particle accelerators, the horizontal dispersion function is forced to zero at locations with instrumentation measuring the transverse beam distribution, in order to remove the dispersive contribution to the horizontal beam size. The design of the CERN Proton Synchrotron did not foresee such a zero-dispersion insertion, making it challenging to get a good precision on the beam size measurements. [...]
2022 - 4 p.
- Published in : JACoW IPAC 2022 (2022) 503-506
Fulltext: PDF;
In : 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.503-506
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