2024-10-02
14:56 |
Gantry design using achromatic scaling fixed-field magnets
/ Tesse, Robin (Brussels U.) ; Hernalsteens, Cédric (CERN) ; Ramoisiaux, Eliott (Brussels U.) ; Gnacadja, Eustache (Brussels U.) ; Vanwelde, Marion (Brussels U.) ; Pauly, Nicolas (Brussels U.)
Proton therapy provides significant advantages over classic radiotherapy for specific cancerous diseases, notably by limiting the delivered dose to organs at risk (OARs). Novel treatment modalities such as flash and arc therapy require changing the energy delivered at the isocenter while providing a high dose rate. [...]
2023 - 4 p.
- Published in : JACoW IPAC 2023 (2023) THPM092
Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.THPM092
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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 |
A public data service for the Beam Interlock Systems at CERN - current status and future plans
/ Garnier, Jean-Christophe (CERN) ; Barth, Jonas (CERN) ; Galilée, Marc-Antoine (CERN) ; Wollmann, Daniel (CERN) ; Buszydlik, Aleksander (CERN) ; Skarhed, Tobias (CERN)
The Beam Interlock System (BIS) is the backbone of the machine protection system in CERN’s accelerator chain, ensuring that the beams are safely transported through the injector chain and circulated in the Large Hadron Collider. A new version of the BIS is currently under development and planned to be deployed in the SPS, LHC and the North Area experimental zone during the Long Shutdown 3 (LS3), while the recently installed BIS in LINAC4 and the PSB will remain in place. [...]
2023 - 4 p.
- Published in : JACoW IPAC 2023 (2023) THPA121
Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.THPA121
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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 |
Damping ring and transfer lines of FCC-𝑒+𝑒− injector complex
/ Spampinati, Simone (Frascati) ; De Santis, Antonio (Frascati) ; Dutheil, Yann (CERN) ; Etisken, Ozgur (Kirikkale U. ; Frascati) ; Ramjiawan, Rebecca (CERN) ; Milardi, Catia (Frascati)
The Future Circular Collider project is built around two main pillars: the construction of 100 km lepton collider running at increasing energies from the Z-pole to the t-tbar threshold (FCC-ee) followed by a hadron collider in the same tunnel (FCC-hh) to explore unprecedented energy frontier.The realization of FCC-ee relies on a very challenging injector complex that should provide the highest ever realized source of positrons, which will serve the first phase of the collider operations (Z-pole). In this contribution the relevant aspects related to the damping of the high-emittance beam coming from the positron source and the transport of the damped beam within the different LINAC of the injector complex are presented and discussed..
2023 - 4 p.
- Published in : JACoW IPAC 2023 (2023) MOPA112
Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.MOPA112
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2024-10-02
14:55 |
Optimization of mechanical robustness in the booster injection bumpers
/ Lackner, Friedrich (CERN) ; Atanasov, Miroslav (CERN) ; Balhan, Bruno (CERN) ; Baud, Cedric (CERN) ; Borburgh, Jan (CERN) ; M Walraven (Inholland U. Appl. Sci., Alkmaar)
During the Long Shutdown 2 (LS2) at CERN, the new Linac4 (L4) accelerator has been successfully connected to the PS Booster (PSB) to inject 160 MeV H− beam into the 4 superposed PSB rings. The horizontal displacement of the circulating beam during injection relies on 4 pulsed dipole magnets. [...]
2023 - 4 p.
- Published in : JACoW IPAC 2023 (2023) THPM018
Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.THPM018
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2024-10-02
14:55 |
Simulations and experiments for dynamic aperture studies in the LHC ion operation
/ Kostoglou, Sofia (CERN) ; Sterbini, Guido (CERN) ; Bartosik, Hannes (CERN) ; Efthymiopoulos, Ilias (CERN) ; Hostettler, Michi (CERN) ; Bruce, Roderik (CERN)
Dynamic Aperture (DA) studies, based on single-particle tracking simulations including important non-linear fields such as beam-beam effects, have played a crucial role in guiding the operation of the Large Hadron Collider (LHC) in proton-proton collisions. The correspondence between DA computed through simulations and the actual beam lifetime during operation has been established for proton beams through dedicated experiments at the LHC. [...]
2024 - 4 p.
- Published in : JACoW IPAC 2024 (2024) MOPS06
Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.MOPS06
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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
14:55 |
Application of beam-based alignment to the CLEAR facility
/ Aksoy, Avni (Ankara U. ; CERN) ; Malyzhenkov, Alexander (CERN) ; Latina, Andrea (CERN) ; Korysko, Pierre (Oxford U. ; CERN) ; Corsini, Roberto (CERN) ; Farabolini, Wilfrid (CERN)
The CERN Linear Electron Accelerator for Research (CLEAR) has been operating since 2017 as a user facility providing beams for a large variety of experiments. Its RF photocathode-based linear accelerator can accelerate electrons up to 220 MeV with a bunch charge of 0.1-1.5nC with single or up to 150 bunches per train. [...]
2023 - 4 p.
- Published in : JACoW IPAC 2023 (2023) WEPL025
Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.WEPL025
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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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