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CERN Document Server 找到 68 笔记录  1 - 10下一个最後  跳到记录: 检索需时 0.55 秒. 
1.
Analysis of double-resonance crossing in adiabatic trapping phenomena for quasi-integrable area-preserving maps with time-dependent exciters / Bazzani, Armando (Bologna U. ; INFN, Bologna) ; Capoani, Federico (Bologna U. ; INFN, Bologna) ; Giovannozzi, Massimo (CERN)
In this paper, we analyze the adiabatic crossing of a resonance for Hamiltonian systems when a double-resonance condition is satisfied by the linear frequency at an elliptic fixed point. We discuss in detail the phase-space structure on a class of Hamiltonians and area-preserving maps with an elliptic fixed point in the presence of a time-dependent exciter. [...]
arXiv:2402.18358.- 2024-05-23 - 14 p. - Published in : Phys. Rev. E 109 (2024) 054212 Fulltext: 2402.18358 - PDF; Publication - PDF;
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2.
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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3.
Modelling the experimental data for long-range beam-beam wire compensators at the CERN LHC with diffusive models / Montanari, C E (Bologna U. ; CERN) ; Bazzani, A (Bologna U.) ; Giovannozzi, M (CERN) ; Poyet, A (CERN) ; Sterbini, G (CERN)
Current-carrying wires have long been proposed as measures to mitigate beam-beam effects. Dedicated hardware has been installed at CERN Large Hadron Collider (LHC) and experimental sessions have been organised to study the beam dynamics in the presence of the wire compensators. [...]
2023 - 4 p. - Published in : JACoW IPAC 2023 (2023) WEPA021 Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.WEPA021
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4.
Numerical simulations of transverse nonlinear beam manipulations at the CERN PS / Capoani, F (Bologna U. ; CERN) ; Bazzani, A (Bologna U.) ; Giovannozzi, M (CERN)
A new set of nonlinear beam manipulations have been recently proposed, with the goal of extending the transverse beam splitting that is routinely used at the CERN PS to deliver beam to the SPS for fixed-target physics. Using a simple Hamiltonian model, it has been shown how the transverse emittances can be shared by crossing a two-dimensional nonlinear resonance. [...]
2023 - 4 p. - Published in : JACoW IPAC 2023 (2023) WEPL098 Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.WEPL098
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5.
Analysis of a double-resonance crossing for beam splitting / Capoani, F (Bologna U. ; CERN) ; Bazzani, A (Bologna U.) ; Giovannozzi, M (CERN)
Beam splitting can be performed by adiabatic crossing of a given one-dimensional non-linear resonance. This process is routinely used at the CERN PS to deliver the proton beam to the SPS fixed-target physics. [...]
2023 - 4 p. - Published in : JACoW IPAC 2023 (2023) WEPL096 Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.WEPL096
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6.
Focus point on high-energy accelerators: advances, challenges, and applications / Appleby, R B (Cockcroft Inst. Accel. Sci. Tech.) ; Bazzani, A (Bologna U. ; INFN, Bologna) ; Giovannozzi, M (CERN) ; Levichev, E (Novosibirsk, IYF)
2023 - 3 p. - Published in : Eur. Phys. J. Plus 138 (2023) 12
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7.
Performance analysis of indicators of chaos for nonlinear dynamical systems / Bazzani, A. (Bologna U. ; INFN, Bologna) ; Giovannozzi, M. (CERN) ; Montanari, C.E. (Bologna U. ; INFN, Bologna ; CERN) ; Turchetti, G. (Bologna U. ; INFN, Bologna)
The efficient detection of chaotic behavior in orbits of a complex dynamical system is an active domain of research. Several indicators have been proposed in the past, and new ones have recently been developed in view of improving the performance of chaos detection by means of numerical simulations. [...]
arXiv:2304.08340.- 2023-06-22 - 24 p. - Published in : Phys. Rev. E 107 (2023) 064209 Fulltext: PDF;
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8.
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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9.
Using Dynamic Indicators for Probing Single-Particle Stability in Circular Accelerators / Montanari, Carlo Emilio (Bologna U. ; CERN) ; Bazzani, Armando (Bologna U.) ; Giovannozzi, Massimo (CERN) ; Turchetti, Giorgio (Bologna U.)
Computing the long-term behaviour of single-particle motion is a numerically intensive process, as it requires a large number of initial conditions to be tracked for a large number of turns to probe their stability. A possibility to reduce the computational resources required is to provide indicators that can efficiently detect chaotic motion, which are considered precursors to unbounded motion. [...]
2022 - 4 p. - Published in : JACoW IPAC 2022 (2022) 168-171 Fulltext: PDF;
In : 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.168-171
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10.
Recent Progress on Nonlinear Beam Manipulations in Circular Accelerators / Bazzani, Armando (U. Bologna (main) ; INFN, Bologna) ; Capoani, Federico (CERN ; U. Bologna (main) ; INFN, Bologna) ; Giovannozzi, Massimo (CERN)
In recent years, transverse beam splitting by crossing a stable resonance has become the operational means to perform MultiTurn Extraction (MTE) from the CERN PS to the SPS. This method delivers the high-intensity proton beams for fixed-target physics at the SPS. [...]
2022 - 7 p. - Published in : JACoW HB 2021 (2022) 52-58 Fulltext: PDF;
In : 64th ICFA Advanced Beam Dynamics Workshop on High Intensity and High Brightness Hadron Beams (HB 2021), Batavia, Illinois, United States, 4 - 9 Oct 2021, pp.52-58
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CERN Document Server : 找到 68 笔记录   1 - 10下一个最後  跳到记录:
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