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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2024-09-26
14:21 |
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2024-09-15
20:29 |
NuTag: A proof-of-concept study for a long-baseline neutrino beam
/ Baratto Roldan, Anna (CERN) ; Perrin-Terrin, Mathieu (Centre National de la Recherche Scientifique (FR)) ; Parozzi, Elisabetta Giulia (Universita & INFN, Milano-Bicocca (IT)) ; 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. These systematic uncertainties could be eliminated by a novel experimental technique: neutrino tagging. [...]
CERN-PBC-Notes-2024-004.-
Geneva : CERN, 2024
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2024-09-10
18:23 |
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2024-09-10
05:17 |
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2024-08-22
04:34 |
Preliminary Results of the 2023 International Fermilab Booster Studies
/ Eldred, Jeffrey (Fermilab) ; Balcewicz, Michael (Fermilab) ; Schmidt, Frank (CERN) ; Simons, Benjamin (Northern Illinois U.)
An overview is given of the methods and preliminary results from dedicated beam studies on three topics conducted over five days in July 2023. In the first study, the Fermilab Booster magnets were held constant at magnetic fields corresponding to the injection energy. [...]
arXiv:2408.08987; FERMILAB-PUB-24-0231-AD.-
2024-08-30 - 28 p.
- Published in : JINST
Fulltext: 2408.08987 - PDF; FERMILAB-PUB-24-0231-AD - PDF; External link: Fermilab Accepted Manuscript
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.T08008
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