1.
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Optimizing Beam Dynamics in LHC with Active Deep Learning
/ Di Croce, Davide (Ecole Polytechnique, Lausanne) ; Giovannozzi, Massimo (CERN) ; Krymova, Ekaterina (Ecole Polytechnique, Lausanne ; Zurich, ETH) ; Pieloni, Tatiana (Ecole Polytechnique, Lausanne) ; Seidel, Mike (PSI, Villigen ; Ecole Polytechnique, Lausanne) ; Van der Veken, Frederik (CERN)
The Dynamic Aperture (DA) is an important concept for the study of non-linear beam dynamics in a circular accelerator. It refers to the region in phase space where a particle’s motion remains bounded over a given number of turns. [...]
2024 - 4 p.
- Published in : JACoW HB 2023 (2024) 422-425
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.422-425
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2.
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Xsuite: an integrated beam physics simulation framework
/ Iadarola, Giovanni (CERN) ; Abramov, Andrey (CERN) ; Belanger, Philippe (TRIUMF) ; Buffat, Xavier (CERN) ; De Maria, Riccardo (CERN) ; Demetriadou, Despina (CERN) ; Deniau, Laurent (CERN) ; Di Croce, Davide (EPFL, Lausanne, FSL) ; Hermes, Pascal (CERN) ; Kicsiny, Peter (CERN) et al.
Xsuite is a newly developed modular simulation package combining in a single flexible and modern framework the capabilities of different tools developed at CERN in the past decades, notably Sixtrack, Sixtracklib, COMBI and PyHEADTAIL. The suite consists of a set of Python modules (Xobjects, Xpart, Xtrack, Xcoll, Xfields, Xdeps) that can be flexibly combined together and with other accelerator-specific and general-purpose python tools to study complex simulation scenarios. [...]
arXiv:2310.00317.-
2024-03-21 - 8 p.
- Published in : JACoW HB 2023 (2024) TUA2I1
Fulltext: document - PDF; 2310.00317 - 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.TUA2I1
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3.
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A Novel Method for Detecting Unidentified Falling Object Loss Patterns in the LHC
/ Coyle, Loic (CERN) ; Blanc, Frederic (Ecole Polytechnique, Lausanne) ; Di Croce, Davide (Ecole Polytechnique, Lausanne) ; Lechner, Anton (CERN) ; Mirarchi, Daniele (CERN) ; Pieloni, Tatiana (Ecole Polytechnique, Lausanne) ; Solfaroli Camillocci, Matteo (CERN) ; Wenninger, Jorg (CERN)
Understanding and mitigating particle losses in the Large Hadron Collider (LHC) is essential for both machine safety and efficient operation. Abnormal loss distributions are telltale signs of abnormal beam behaviour or incorrect machine configuration. [...]
2022 - 4 p.
- Published in : JACoW IPAC 2022 (2022) 953-956
Fulltext: PDF;
In : 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.953-956
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4.
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Analysis Tools for Numerical Simulations of Dynamic Aperture with Xsuite
/ Pugnat, Thomas (CERN) ; Di Croce, Davide (Ecole Polytechnique, Lausanne) ; Giovannozzi, Massimo (CERN) ; Van der Veken, Frederik (CERN)
Recently, several efforts have been made at CERN to develop a new tracking tool, Xsuite, which is intended to be the successor to SixTrack. In this framework, analysis tools have also been prepared with the goal of providing advanced post-processing techniques for the interpretation of dynamic aperture simulations. [...]
2024 - 4 p.
- Published in : JACoW HB 2023 (2024) 551-554
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.551-554
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5.
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Modeling Particle Stability Plots for Accelerator Optimization Using Adaptive Sampling
/ Schenk, Michael (Ecole Polytechnique, Lausanne ; CERN) ; Coyle, Loic (CERN ; Ecole Polytechnique, Lausanne) ; Giovannozzi, Massimo (CERN) ; Krymova, Ekaterina (Ecole Polytechnique, Lausanne ; Zurich, ETH) ; Mereghetti, Alessio (CERN ; CNAO, Milan) ; Obozinski, Guillaume (Ecole Polytechnique, Lausanne ; Zurich, ETH) ; Pieloni, Tatiana (CERN ; Ecole Polytechnique, Lausanne)
One key aspect of accelerator optimization is to maximize the dynamic aperture (DA) of a ring. Given the number of adjustable parameters and the compute-intensity of DA simulations, this task can benefit significantly from efficient search algorithms of the available parameter space. [...]
Geneva : JACoW, 2021 - 4 p.
- Published in : JACoW IPAC 2021 (2021) 1923-1926
Fulltext: PDF;
In : 12th International Particle Accelerator Conference (IPAC 2021), Online, 24 - 28 May 2021, pp.1923-1926
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6.
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Detection and Classification of Collective Beam Behaviour in the LHC
/ Coyle, Loic (Ecole Polytechnique, Lausanne ; CERN) ; Blanc, Frederic (Ecole Polytechnique, Lausanne) ; Buffat, Xavier (CERN) ; Krymova, Ekaterina (Ecole Polytechnique, Lausanne ; Zurich, ETH) ; Obozinski, Guillaume (Ecole Polytechnique, Lausanne ; Zurich, ETH) ; Pieloni, Tatiana (Ecole Polytechnique, Lausanne ; CERN) ; Schenk, Michael (Ecole Polytechnique, Lausanne ; CERN) ; Solfaroli Camillocci, Matteo (CERN) ; Wenninger, Jorg (CERN)
Collective instabilities can lead to a severe deterioration of beam quality, in terms of reduced beam intensity and increased beam emittance, and consequently a reduction of the collider’s luminosity. It is therefore crucial for the operation of the CERN’s Large Hadron Collider to understand the conditions in which they appear in order to find appropriate mitigation measures. [...]
Geneva : JACoW, 2021 - 4 p.
- Published in : JACoW IPAC 2021 (2021) 4318-4321
Fulltext: PDF;
In : 12th International Particle Accelerator Conference (IPAC 2021), Online, 24 - 28 May 2021, pp.4318-4321
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7.
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Towards Beam-Beam Simulations for FCC-ee
/ Kicsiny, Peter (CERN ; Ecole Polytechnique, Lausanne) ; Buffat, Xavier (CERN) ; Iadarola, Giovanni (CERN) ; Pieloni, Tatiana (EPFL-ISIC, Lausanne) ; Schulte, Daniel (CERN) ; Seidel, Mike (Ecole Polytechnique, Lausanne ; PSI, Villigen)
The FCC-ee (Future Circular Collider) lepton collider is currently the most favored next generation research infrastructure project at CERN, aimed at studying properties of standard model particles with the highest precision ever. The chosen parameters of the machine yield unprecedented conditions which give rise to previously unseen dynamical effects during collisions. [...]
2023 - 6 p.
- Published in : JACoW eeFACT 2022 (2023) 165-170
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.165-170
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8.
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A Linearized Vlasov Method for the Study of Transverse e-Cloud Instabilities
/ Johannesson, Sofia (CERN ; Ecole Polytechnique, Lausanne) ; Iadarola, Giovanni (CERN) ; Seidel, Mike (PSI, Villigen ; Ecole Polytechnique, Lausanne)
Using a Vlasov approach, electron cloud driven instabilities can be modeled to study beam stability on time scales that conventional Particle In Cell simulation methods cannot access. The Vlasov approach uses a linear description of electron cloud forces that accounts for both the betatron tune modulation along the bunch and the dipolar kicks from the electron cloud. [...]
2024 - 4 p.
- Published in : JACoW HB 2023 (2024) 462-465
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.462-465
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9.
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The High Energy LHC Beam-Beam Effects studies
/ Pieloni, Tatiana (Ecole Polytechnique, Lausanne) ; Amorim, David (CERN) ; Antipov, Sergey (CERN) ; Barranco García, Javier (Ecole Polytechnique, Lausanne) ; Buffat, Xavier (CERN) ; Rivkin, Leonid (Ecole Polytechnique, Lausanne) ; Salvant, Benoit (CERN) ; Tambasco, Claudia (Ecole Polytechnique, Lausanne) ; Zimmermann, Frank (CERN)
We present in this paper the studies of beam-beam effects for the High Energy Large Hadron Collider. We will describe and review the different aspects of beam-beam interactions (i.e. [...]
CERN-ACC-2018-074.-
2018 - 4 p.
- Published in : 10.18429/JACoW-IPAC2018-MOPMF069
Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.MOPMF069
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10.
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Accelerating dynamic aperture evaluation using deep neural networks
/ Di Croce, D (Ecole Polytechnique, Lausanne) ; Giovannozzi, M (CERN) ; Pieloni, T (Ecole Polytechnique, Lausanne) ; Seidel, M (Ecole Polytechnique, Lausanne ; PSI, Villigen) ; Van der Veken, F F (CERN)
The Dynamic Aperture (DA) is an important concept for the study of non-linear beam dynamics in a circular accelerator. The DA is defined as the extent of the phase-space region in which the particle's motion remains bounded over a finite number of turns. [...]
2023 - 4 p.
- Published in : JACoW IPAC 2023 (2023) WEPA097
Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.WEPA097
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