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Assessing the Performance of Deep Learning Predictions for Dynamic Aperture of a Hadron Circular Particle Accelerator
/ Di Croce, Davide (EPFL, Lausanne, FSL) ; Giovannozzi, Massimo (CERN) ; Montanari, Carlo Emilio (Manchester U.) ; Pieloni, Tatiana (EPFL, Lausanne, FSL) ; Redaelli, Stefano (CERN) ; Van der Veken, Frederik F (CERN)
Understanding the concept of dynamic aperture provides essential insights into nonlinear beam dynamics, beam losses, and the beam lifetime in circular particle accelerators. This comprehension is crucial for the functioning of modern hadron synchrotrons like the CERN Large Hadron Collider and the planning of future ones such as the Future Circular Collider. [...]
2024 - 22 p.
- Published in : Instruments 8 (2024) 50
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Shower simulations for the CERN proton synchrotron internal dump and possible shielding options
/ Niang, Samuel (CERN) ; Huschauer, Alexander (CERN) ; Esposito, Luigi Salvatore (CERN) ; Giovannozzi, Massimo (CERN) ; Pugnat, Thomas (CERN)
During the Long Shutdown 2, the two internal dumps were replaced and successfully integrated into the CERN Proton Synchrotron operation to withstand the intense and bright beams for the High-Luminosity LHC. They function as safety devices, designed to swiftly intersect the beam’s trajectory and effectively stop the beam over multiple turns. [...]
2024 - 4 p.
- Published in : JACoW IPAC 2024 (2024) TUPS37
Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.TUPS37
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Sorting strategies for the new superconducting magnets for the CERN HL-LHC
/ Pugnat, Thomas (CERN) ; Wegscheider, Andreas (CERN) ; Todesco, Ezio (CERN) ; Giovannozzi, Massimo (CERN) ; Tomas, Rogelio (CERN)
In a circular collider, precise control of the linear optics in the vicinity of the interaction points plays a crucial role in ensuring optimal operational performance and satisfying the machine protection constraints. Superconducting magnets are affected by unavoidable field errors that impact machine performance, and mitigation strategies are usually put in place to improve the situation. [...]
2024 - 4 p.
- Published in : JACoW IPAC 2024 (2024) THPC16
Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.THPC16
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Updated analysis of beam halo measurements in LHC Run 2 and Run 3
/ Rakic, Milica (Ecole Polytechnique, Lausanne ; CERN) ; Salvachua, Belen (CERN) ; Montanari, Carlo Emilio (Manchester U. ; CERN) ; Mirarchi, Daniele (CERN) ; Paraschou, Konstantinos (CERN) ; Giovannozzi, Massimo (CERN) ; Hermes, Pascal (CERN) ; Morales Vigo, Sara (CERN) ; Redaelli, Stefano (CERN)
Measurements of the transverse beam halo in the Large Hadron Collider (LHC) provide crucial input for the performance evaluation of the collimation configuration in the High-Luminosity LHC (HL-LHC) era. Such measurements are carried out in various phases of the LHC operational cycle by scraping the beam with movable collimators. [...]
2024 - 4 p.
- Published in : JACoW IPAC 2024 (2024) THPC67
Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.THPC67
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Study of the corrector systems for the new lattice of the CERN hadron-hadron Future Circular Collider
/ Perez-Segurana, Gustavo (CERN) ; Todesco, Ezio (CERN) ; Giovannozzi, Massimo (CERN)
A new layout for the energy-frontier hadron collider (FCC-hh) under study at CERN has been designed, following the constraints imposed by the outcome of recent tunnel placement studies. The new lattice and the need to maximize the dipole filling factor triggered a deep revision of the corrector systems located in the regular arcs, such as orbit, tune, linear coupling, and chromaticity correctors. [...]
2024 - 4 p.
- Published in : JACoW IPAC 2024 (2024) MOPC15
Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.MOPC15
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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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Collimator Scan Based Beam Halo Measurements in LHC and HL-LHC
/ Hermes, Pascal (CERN) ; Giovannozzi, Massimo (CERN) ; Montanari, Carlo Emilio (CERN ; U. Manchester (main)) ; Morales Vigo, Sara (CERN ; Cockcroft Inst. Accel. Sci. Tech.) ; Rakic, Milica (Ecole Polytechnique, Lausanne) ; Redaelli, Stefano (CERN) ; Salvachúa, Belen (CERN)
Measurements in the CERN Large Hadron Collider (LHC) have indicated that the population of the transverse beam halo is greater than that of a Gaussian distribution. With the upcoming High Luminosity upgrade (HL-LHC), the stored beam energy in the beam halo could become large enough to threaten the integrity of the collimation system. [...]
2023 - 5 p.
- Published in : JACoW IBIC 2023 (2023) 164-168
Fulltext: PDF;
In : 12th International Beam Instrumentation Conference (IBIC 2023), Saskatoon, Canada, 10 - 14 Sep 2023, pp.164-168
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Study of the Performance of the CERN Proton Synchrotron Internal Dump
/ Pugnat, Thomas (CERN) ; Domange, Delphine (Brussels U.) ; Esposito, Luigi Salvatore (CERN) ; Giovannozzi, Massimo (CERN) ; Gnacadja, Eustache (Brussels U.) ; Hernalsteens, Cédric (CERN) ; Huschauer, Alexander (CERN) ; Niang, Samuel (CERN) ; Tesse, Robin (Brussels U.)
In the framework of the LHC Injector Upgrade project, a new internal dump for the CERN Proton Synchrotron (PS) has been designed, installed, and successfully commissioned. This device is meant to move rapidly into the beam and stop charged particles over several turns to provide protection to the PS hardware against beam-induced damage. [...]
2024 - 4 p.
- Published in : JACoW HB 2023 (2024) 555-558
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.555-558
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