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CERN Document Server 2,044 elementer funnet  1 - 10nesteslutt  gå til element: Søket tok 1.02 sekunder. 
1.
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Diffusive models and chaos indicators for non-linear betatron motion in circular hadron accelerators / Montanari, Carlo Emilio
Understanding the complex dynamics of beam-halo formation and evo- lution in circular particle accelerators is crucial for the design of current and future rings, particularly those utilizing superconducting magnets such as the CERN Large Hadron Collider (LHC), its luminosity upgrade HL-LHC, and the [...]
CERN-THESIS-2023-091 - 217 p.


10.48676/unibo/amsdottorato/10811
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Evaluation of different scaling laws for dynamic aperture variation over time and intensity evolution in hadron storage rings / Montanari, Carlo Emilio
Two proposed fit models for Dynamic Aperture (DA) evolution have been studied in detail and applied to different numerical models and experimental data. [...]
CERN-STUDENTS-Note-2018-131. - 2018
Access to fulltext
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3.
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MD 7224: LHC collimation quench test with protons / Hermes, Pascal Dominik (CERN) ; Abramov, Andrey (CERN) ; Bruce, Roderik (CERN) ; Calzolari, Daniele (Universita e INFN, Padova (IT)) ; D'Andrea, Marco (CERN) ; Giovannozzi, Massimo (CERN) ; Hernalsteens, Cedric (CERN) ; Lechner, Anton (CERN) ; Lindstrom, Bjorn Hans Filip (CERN) ; Mirarchi, Daniele (CERN) et al.
This note describes a collimation quench test performed at the CERN Large Hadron Collider. [...]
CERN-ACC-NOTE-2023-0024. - 2023.
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Diffusive approach for non-linear beam dynamics in a circular accelerator / Montanari, Carlo Emilio
In the design phase and simulation of a circular accelerator, it is fundamental to have a proper understanding of the single-particle non-linear betatronic motion, and of how such dynamics interfere with beam quality [...]
CERN-THESIS-2019-383 - 135 p.

Full text
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Diffusion in stochastically perturbed Hamiltonian systems with applications to the recent LHC dynamic aperture experiments / Bazzani, Armando (INFN, Bologna ; U. Bologna, DIFA) ; Mazzarisi, Onofrio (Salerno U.) ; Giovannozzi, Massimo (CERN) ; Maclean, Ewen (CERN)
In this paper, we review diffusion phenomena in stochastically perturbed Hamiltonian systems, with the aim of defining the framework to use Nekhoroshev-like estimates as prototypes for the form of the diffusion coefficient. A discussion of the features of this framework is carried out. [...]
WSP, 2019 - 16 p. - Published in : 10.1142/9789813279612_0005
In : Nonlinear Dynamics and Collective Effects in Particle Beam Physics, Arcidosso, Italy, 19 - 22 Sep 2017, pp.70-85
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Probing the diffusive behaviour of beam-halo dynamics in circular accelerators / Montanari, C.E. (Bologna U. ; INFN, Bologna ; CERN) ; Bazzani, A. (Bologna U. ; INFN, Bologna) ; Giovannozzi, M. (CERN)
Circular particle accelerators at the energy frontier are based on superconducting magnets that are extremely sensitive to beam losses as these might induce quenches, i.e. transitions to the normal-conducting state. [...]
arXiv:2202.10050.- 2022-11-21 - 24 p. - Published in : Eur. Phys. J. Plus 137 (2022) 1264 Fulltext: document - PDF; 2202.10050 - PDF;
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Testing the Global Diffusive Behaviour of Beam-Halo Dynamics at the CERN LHC Using Collimator Scans / Montanari, Carlo Emilio (Bologna U.) ; Bazzani, Armando (Bologna U.) ; Giovannozzi, Massimo (CERN) ; Gorzawski, Arkadiusz (Lund U.) ; Redaelli, Stefano (CERN)
In superconducting circular particle accelerators, controlling beam losses is of paramount importance for ensuring optimal machine performance and an efficient operation. To achieve the required level of understanding of the mechanisms underlying beam losses, models based on global diffusion processes have recently been studied and proposed to investigate the beam-halo dynamics. [...]
2022 - 4 p. - Published in : JACoW IPAC 2022 (2022) 172-175 Fulltext: PDF;
In : 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.172-175
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Recent measurements and analyses of the beam-halo dynamics at the CERN LHC using collimator scans / Montanari, C E (Bologna U. ; CERN) ; Bazzani, A (Bologna U.) ; Giovannozzi, M (CERN) ; Hermes, P (CERN) ; Redaelli, S (CERN)
Controlling beam losses is of paramount importance in superconducting particle accelerators, mainly for ensuring optimal machine performance and an efficient operation. Models based on global diffusion processes, in which the form of the diffusion coefficient is the stability-time estimate of the Nekhoroshev theorem, have been studied and proposed to investigate the beam-halo dynamics. [...]
2023 - 4 p. - Published in : JACoW IPAC 2023 (2023) WEPA022 Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.WEPA022
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Bridging mathematics and physics: models of the evolution of dynamic aperture in hadron colliders and applications to LHC / Van der Veken, Frederik (CERN ; Malta U.) ; Bazzani, Armando (U. Bologna, DIFA ; INFN, Bologna) ; Giovannozzi, Massimo (CERN) ; Maclean, Ewen Hamish (CERN ; Malta U.) ; Montanari, Carlo Emiglio (U. Bologna, DIFA) ; Goethem, Wietse Van (CERN ; Antwerp U.)
When designing a high-energy, circular accelerator, like the upcoming High-Luminosity LHC or the future FCC, it is essential to have a reliable estimate of the expected beam losses and beam lifetime. A good prediction of the beam losses is essential to anticipate potential issues leading to quenches of the superconducting magnets or damage to the collimation system, while the beam lifetime is in direct relation to luminosity and, hence, to the overall performance of the accelerator. [...]
SISSA, 2020 - 7 p. - Published in : PoS EPS-HEP2019 (2020) 023 Fulltext from publisher: PDF;
In : European Physical Society Conference on High Energy Physics (EPS-HEP) 2019, Ghent, Belgium, 10 - 17 Jul 2019, pp.023
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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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