CERN Accelerating science

Accelerator Physics

Darreres entrades:
2024-02-19
13:41
Optical readout of MicroPattern Gaseous Detectors with SiPMs / Woods, Jesse
In order to probe the universe for new and exciting physics, increasingly higher and higher energy scales must be accessed to test our theories, potentially uncovering new particles and interactions. [...]
CERN-STUDENTS-Note-2024-004.
- 2022.
Full text

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2024-02-07
06:24
Wavefront reconstruction of a non-diffracting structured laser beam / Dusek, Martin (CERN ; Liberec Tech. U.) ; Gayde, Jean-Christophe (CERN) ; Sulc, Miroslav (Prague, Inst. Plasma Phys. ; Liberec Tech. U.)
The Structured Laser Beam (SLB) is a pseudo-non-diffracting laser beam that shares many characteristics with a Bessel beam. However, it can theoretically propagate over an unlimited distance while maintaining an extremely low inner core divergence of only 0.01 mrad. [...]
2023 - 12 p. - Published in : Opt. Express 31 (2023) 42099-42110 Fulltext: PDF;

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2024-02-03
04:47
NuTag: proof-of-concept study for a long-baseline neutrino beam / Baratto-Roldán, Anna (CERN) ; Perrin-Terrin, Mathieu (Marseille, CPPM) ; Parozzi, Elisabetta Giulia (CERN) ; Jebramcik, Marc Andre (CERN) ; Charitonidis, Nikolaos (CERN)
The study of neutrino oscillation at accelerators is limited by systematic uncertainties, in particular on the neutrino flux, cross-section, and energy estimates. [...]
arXiv:2401.17068.
- 24 p.
Fulltext

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2024-01-30
14:53
Development of Optics Measurement Methods for Circular Accelerators / Wegscheider, Andreas
Linear optics corrections in circular particle accelerators have achieved remarkable performance in the last years pushing the precision and accuracy of the measurement and correction of machine parameters further [...]
CERN-THESIS-2022-403 - 111 p.


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2024-01-30
06:40
Studies and Possible Mitigation of Electron Cloud Effects in FCC-ee / Yaman, Fatih (Izmir Inst. Tech.) ; Zimmermann, Frank (CERN)
In this work, we present numerical results for the electron cloud build-up and mitigation studies considering Arc Dipole and Drift sections of the FCC-ee collider. We report the central electron density that could be reached by minimising secondary electron contributions and the photoelectron generation rates in order to achieve e⁻ densities lower than the single-bunch instability threshold, considering the baseline beam parameters. [...]
2023 - 5 p. - Published in : JACoW eeFACT 2022 (2023) 154-158 Fulltext: PDF;
In : 65th ICFA Advanced Beam Dynamics Workshop on High Luminosity Circular e+ e- Colliders (eeFACT2022), INFN, Frascati, Italy, 12 - 16 Sep 2022, pp.154-158

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2024-01-30
06:40
FCC-ee Lattice Design / Keintzel, Jacqueline (CERN) ; Abramov, Andrey (CERN) ; Benedikt, Michael (CERN) ; Hofer, Michael (CERN) ; Hunchak, Patrick (Saskatchewan U.) ; Oide, Katsunobu (CERN) ; Raubenheimer, Tor (SLAC) ; Tomás García, Rogelio (CERN) ; Zimmermann, Frank (CERN)
Within the framework of the Future Circular Collider Feasibility and Design Study, the design of the electron-positron collider FCC-ee is being optimised, as a possible future double collider ring, currently foreseen to start operation during the 2040s. FCC-ee is designed to operate at four different energy stages, allowing for precision measurements: from the Z-pole up to above the ttbar-threshold. [...]
2023 - 9 p. - Published in : JACoW eeFACT 2022 (2023) 52-60 Fulltext: PDF;
In : 65th ICFA Advanced Beam Dynamics Workshop on High Luminosity Circular e+ e- Colliders (eeFACT2022), INFN, Frascati, Italy, 12 - 16 Sep 2022, pp.52-60

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2024-01-24
09:39
Performance of the Low Energy Ion Ring at CERN with lead ions in 2022 / Alemany-Fernandez, Reyes (CERN) ; Frassier, Alexandre (CERN) ; Rey, Anthony (CERN) ; Wetton, Chris (CERN) ; Mutin, Christophe (CERN) ; Gamba, Davide (CERN) ; Bodart, Dominique (CERN) ; Carlier, Felix (CERN) ; Velotti, Francesco (CERN) ; Le Godec, Gilles (CERN) et al.
2022 has been a performance consolidation year for the Low Energy Ion Ring (LEIR) at CERN that demonstrated its capability of delivering the target beam parameters required for high luminosity production in the LHC in a reproducible and reliable way. The main steps that have led to the high performance reach of this beam, together with the machine stability improvements deployed, are detailed in this paper..
2023 - 4 p. - Published in : JACoW IPAC 2023 (2023) TUPA151 Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.TUPA151

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2024-01-23
14:46
Optimization of the High Brightness Beam Performance of the CERN PSB with H- Injection / Prebibaj, Tirsi
In the framework of the LHC Injectors Upgrade Project (LIU), the CERN Proton Synchrotron Booster (PSB) went through major upgrades resulting in new effects to study, challenges to overcome and new parameter regimes to explore [...]
CERN-THESIS-2023-322 - 117 p.


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2024-01-20
08:08
The potential contribution of a structured laser beam to accelerator alignment technology / Gayde, Jean-Christophe (CERN) ; Dusek, Martin (CERN ; Liberec Tech. U.) ; Mergelkuhl, Dirk (CERN) ; Niewiem, Witold (CERN ; Zurich, ETH) ; Polak, Krystof (CERN ; Liberec Tech. U.) ; Roiková, Eva (Liberec Tech. U.) ; Sulc, Miroslav (Liberec Tech. U. ; Prague, Inst. Plasma Phys.)
The Structured Laser Beam (SLB) is a type of optical beam characterized by an intense, sharply defined, low divergence core at its center, similar in its transverse intensity distribution to a Bessel beam. The SLB can propagate over a theoretically infinite distance, and has recently been tested up to a distance of 900 m. [...]
2023 - Published in : JACoW IPAC 2023 (2023) THPA041 Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.THPA041

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2024-01-20
08:08
Investigations of losses on the CERN SPS flat bottom with HL-LHC type beams / Lasheen, Alexandre (CERN) ; Bartosik, Hannes (CERN) ; Damerau, Heiko (CERN) ; Demetriadou, Despina (CERN) ; Vinten, Evin (CERN) ; Hermes, Pascal (CERN) ; Kain, Verena (CERN) ; Karpov, Ivan (CERN) ; Papotti, Giulia (CERN) ; Vadai, Mihaly (CERN) et al.
The High-Luminosity LHC (HL-LHC) project at CERN aims at doubling the beam intensity and the brightness. To achieve this unprecedented performance, the LHC injectors were upgraded during the Long Shutdown 2 (2019-2021) to overcome limitations such as space charge and beam instabilities. [...]
2023 - Published in : JACoW IPAC 2023 (2023) TUPA153 Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.TUPA153

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