CERN Accelerating science

CERN Document Server Sök i 58 journaler efter:  1 - 10nästaslut  gå till journal: Sökningen tog 0.65 sekunder. 
1.
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
2.
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;
3.
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
4.
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
5.
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
6.
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
7.
Collective Effects Estimates for the Damping Ring Design of the FCC-ee / Etisken, Ozgur (CERN) ; Antoniou, Fanouria (CERN) ; De Santis, Antonio (Frascati) ; Milardi, Catia (Frascati) ; Zimmermann, Frank (CERN)
The current injector complex design of the FCC-e⁺e⁻ project consists of e⁺/e⁻ linacs, which accelerate the beams up to 6 GeV, a damping ring at 1.54 GeV, a pre-booster ring, accelerating the beam up to 16 GeV and a booster synchrotron ring integrated in the collider tunnel accelerating the beams up to the collision energies. The purpose of the damping ring is to accept the 1.54 GeV beam coming from the linac-1, damp the positron/electron beams and provide the required beam characteristics for the injection into the linac-2. [...]
2022 - 4 p. - Published in : JACoW IPAC 2022 (2022) 2435-2438 Fulltext: PDF;
In : 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.2435-2438
8.
Characterization of the Vertical Beam Tails in the CERN PS Booster / Prebibaj, Tirsi (CERN) ; Antoniou, Fanouria (CERN) ; Asvesta, Foteini (CERN) ; Bartosik, Hannes (CERN) ; Bracco, Chiara (CERN) ; Di Giovanni, Gian Piero (CERN) ; Renner, Elisabeth (CERN)
The CERN Proton Synchrotron Booster (PSB) went through major upgrades in the framework of the LHC Injectors Upgrade Project (LIU) aiming to double the brightness of the LHC beams. Operation restarted in early 2021, demonstrating the expected performance improvement. [...]
2022 - 4 p. - Published in : JACoW IPAC 2022 (2022) 218-221 Fulltext: PDF;
In : 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.218-221
9.
Studies on the Vertical Half-Integer Resonance in the CERN PS Booster / Prebibaj, Tirsi (CERN) ; Antoniou, Fanouria (CERN) ; Asvesta, Foteini (CERN) ; Bartosik, Hannes (CERN) ; Franchetti, Giuliano (Darmstadt, GSI)
Following the upgrades of the LHC Injectors Upgrade Project (LIU), the Proton Synchrotron Booster (PSB) at CERN successfully delivers beams with double brightness. An important contributing factor for this was the dynamic correction of the beta-beating induced by the injection chicane, which allowed stable operation closer to the half-integer resonance. [...]
2022 - 4 p. - Published in : JACoW IPAC 2022 (2022) 222-225 Fulltext: PDF;
In : 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.222-225
10.
High Intensity Studies in the CERN Proton Synchrotron Booster / Asvesta, Foteini (CERN) ; Albright, Simon (CERN) ; Antoniou, Fanouria (CERN) ; Bartosik, Hannes (CERN) ; Bracco, Chiara (CERN) ; Di Giovanni, Gian Piero (CERN) ; Renner, Elisabeth (Vienna U. ; CERN) ; Rumolo, Giovanni (CERN) ; Skowroński, Piotr (CERN) ; Zannini, Carlo (CERN)
After the successful implementation of the LHC Injectors Upgrade (LIU) project, studies were conducted in the CERN Proton Synchrotron Booster (PSB) in order to assess the intensity reach with the increased beam brightness. The studies focused on the high intensity beams delivered to the PSB users, both at 1.4 and 2 GeV. [...]
2022 - 4 p. - Published in : JACoW IPAC 2022 (2022) 2056-2059 Fulltext: PDF;
In : 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.2056-2059

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