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2024-10-05
09:43
Carbon-Based Materials for High-Power Accelerator Components Exposed to Extreme Radiation Conditions / Simon, Pascal (GSI - Helmholtzzentrum fur Schwerionenforschung GmbH (DE))
The increasing beam power of next-generation particle accelerator facilities demands specific functional materials that can withstand extreme operation conditions, especially when interacting directly with the beam. These conditions include large thermal loads and mechanical stresses that are induced by high-intensity/high-power particle beams, which also induce radiation damage. [...]
CERN-THESIS-2023-415.- Fulltext: PDF; External link: Approve this document (restricted)

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2024-10-04
09:27
Results and plans for run 2 of the advanced proton driven plasma wakefield acceleration experiment AWAKE / Gschwendtner, Edda (CERN) /AWAKE Collaboration
This talk summarizes the plans, challenges and key components of the four phases in the AWAKE roadmap. In addition, an overview of the rich measurement program of the second phase, AWAKE Run 2b, during 2023 and 2024 is given. [...]
2024 - 4 p. - Published in : JACoW IPAC 2024 (2024) MOPR41 Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.MOPR41

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2024-10-04
09:27
LHC 2023 ion optics commissioning / Ferrentino, Vittorio (Naples U. ; CERN) ; Wegscheider, Andreas (CERN) ; Gilardi, Antonio (CERN) ; Fol, Elena (CERN) ; Maclean, Ewen (CERN) ; Carlier, Felix (CERN) ; Soubelet, Felix (CERN) ; Keintzel, Jacqueline (CERN) ; Cardona, Javier (Colombia, U. Natl.) ; Dilly, Joschua (CERN) et al.
In 2023, about 2 months of LHC operation were devoted to Heavy Ion physics. In this paper, results of the 2023 ion optics commissioning are reported. [...]
2024 - 4 p. - Published in : JACoW IPAC 2024 (2024) MOPC20 Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.MOPC20

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2024-10-04
08:52
Preparation for Realisation of External Electron Injection for AWAKE Run 2b / van Gils, Nikita (CERN ; Groningen U.) ; Turner, Marlene (CERN) ; Zevi Della Porta, Giovanni (CERN ; Munich, Max Planck Inst.) ; Bencini, Vittorio (CERN ; Oxford U.) ; Ranc, Lucas (Munich, Max Planck Inst.) ; Pannell, Fern (University Coll. London) ; Gerbershagen, Alexander (Groningen U.) ; Gschwendtner, Edda (CERN)
The Advanced Wakefield Experiment (AWAKE) aimsto accelerate electrons to particle physics relevant energiesusing self-modulated proton bunches as drivers in a singleplasma. AWAKE is now in its Run 2b (2023-2024), wherethe goal is to stabilise wakefields by using a plasma density step. [...]
2024 - 4 p. - Published in : JACoW IPAC 2024 (2024) MOPR42 Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.MOPR42

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2024-10-04
08:52
Evolution of special LHC optics configurations Run 3 update / Efthymiopoulos, Ilias (CERN) ; Wegscheider, Andreas (CERN) ; Mirarchi, Daniele (CERN) ; Maclean, Ewen (CERN) ; Carlier, Felix (CERN) ; Van der Veken, Frederik (CERN) ; Dilly, Joschua (CERN) ; Le Garrec, Mael (CERN) ; D'Andrea, Marco (CERN ; INFN, Legnaro) ; Solfaroli, Matteo (CERN) et al.
The Large Hadron Collider (LHC) employs special optics and configurations, alongside low-beta* collision optics, to address specific experimental requirements. These include calibrating luminosity monitors (vdM) and facilitating forward physics measurements in TOTEM and ALFA experiments (high-beta). [...]
2024 - 4 p. - Published in : JACoW IPAC 2024 (2024) MOPC16 Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.MOPC16

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2024-10-02
14:56
A novel Vlasov approach for modeling electron cloud instabilities / Johannesson, Sofia (Ecole Polytechnique, Lausanne ; CERN ; ESS, Lund) ; Iadarola, Giovanni (CERN) ; Seidel, Mike (PSI, Villigen ; Ecole Polytechnique, Lausanne)
This paper discusses the generalization of the two-dimensional impedance model in the presence of an electron cloud. It will be discussed the implementation of a linear model of the e-cloud forces including both dipolar and quadrupolar forces to improve the modeling of the electron cloud instabilities. [...]
2024 - 6 p. - Published in : JACoW IPAC 2024 (2024) MOZD2 Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.MOZD2

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2024-10-02
14:55
Conceptual lattice design for vertical fixed field medical accelerators / Vanwelde, Marion (Brussels U.) ; Hernalsteens, Cédric (CERN) ; Ramoisiaux, Eliott (Brussels U.) ; Gnacadja, Eustache (Brussels U.) ; Pauly, Nicolas (Brussels U.) ; Tesse, Robin (Brussels U.)
Hadron therapy is established as a method of choice for a number of cancerous diseases, and its advantages are well-established for specific malignancies. Modern medical particle accelerators still struggle to fulfil critical features required by advanced treatment modalities, such as variable energy beams, high repetition rate, and pulse-by-pulse intensity modulation. [...]
2023 - 4 p. - Published in : JACoW IPAC 2023 (2023) THPM093 Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.THPM093

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2024-10-02
14:55
A new baseline layout for the FCC-hh ring / Perez-Segurana, Gustavo (CERN) ; Abramov, Andrey (CERN) ; Zimmermann, Frank (CERN) ; Giovannozzi, Massimo (CERN) ; Benedikt, Michael (CERN) ; Bruce, Roderik (CERN) ; Risselada, Thys (CERN) ; Bartmann, Wolfgang (CERN)
The Future Circular Collider (FCC) study includes two accelerators, a high-energy lepton collider (FCC-ee) and an energy-frontier hadron collider (FCC-hh). Both machines share the same tunnel infrastructure. [...]
2024 - 4 p. - Published in : JACoW IPAC 2024 (2024) MOPC14 Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.MOPC14

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2024-10-02
14:54
Increased dose rate for a proton therapy eye treatment nozzle on a medical gantry system using a diamond degrader / Gnacadja, Eustache (Brussels U.) ; Hernalsteens, Cédric (CERN) ; Pauly, Nicolas (Brussels U.) ; Ramoisiaux, Eliott (Brussels U.) ; Tesse, Robin (Brussels U.) ; Vanwelde, Marion (Brussels U.)
The IBA ProteusOne (P1) system is suitable to treat ocular tumors and achieves efficient dose conformality using state-of-the-art pencil beam scanning. Nevertheless, with the limited cyclotron current of the P1 system, clinically relevant (> 15 Gy/min) dose rates can barely be achieved in eye tumors treatment cases with the baseline configuration of the system due to the significantly high energy degradation required (from 230 to 70 MeV). [...]
2023 - 4 p. - Published in : JACoW IPAC 2023 (2023) THPM094 Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.THPM094

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2024-10-02
14:54
Sextupole RDTs in the LHC at injection and in the ramp / Horney, S J (CERN ; Oxford U.) ; Maclean, E (CERN) ; Burrows, P (Oxford U.) ; Carlier, F (CERN) ; Dilly, J (CERN) ; Deniau, L (CERN) ; Ferrentino, V (CERN) ; Fol, E (CERN) ; Hofer, M (CERN) ; Keintzel, J (CERN) et al.
During 2023, examination of the action dependence of sextupolar resonance driving terms (RDT) in the LHC at injection, as measured with an AC-dipole, demonstrated that a robust measurement of the RDTs could still be achieved even with very small amplitude kicks, typically used for linear optics studies. Consequently, analysis of optics measurements from 2022 and 2023 during the LHC energy ramp allowed a first measurement of the sextupole resonance evolution. [...]
2024 - 4 p. - Published in : JACoW IPAC 2024 (2024) MOPC13 Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.MOPC13

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