Long-term analysis of stochastic Hamiltonian systems under time discretizations
R D'Ambrosio, S Di Giovacchino - SIAM Journal on Scientific Computing, 2023 - SIAM
In this paper, we focus our investigation on providing long-term estimates of the Hamiltonian
deviation computed along numerical approximations to the solutions of stochastic …
deviation computed along numerical approximations to the solutions of stochastic …
Dynamic aperture extrapolation in the presence of tune modulation
M Giovannozzi, W Scandale, E Todesco - Physical Review E, 1998 - APS
In hadron colliders, such as the Large Hadron Collider (LHC) to be built at CERN, the long-
term stability of the single-particle motion is mostly determined by the field-shape quality of …
term stability of the single-particle motion is mostly determined by the field-shape quality of …
[HTML][HTML] Strong backward error analysis of symplectic integrators for stochastic Hamiltonian systems
R D'Ambrosio, S Di Giovacchino - Applied Mathematics and Computation, 2024 - Elsevier
Backward error analysis is a powerful tool in order to detect the long-term conservative
behavior of numerical methods. In this work, we present a long-term analysis of symplectic …
behavior of numerical methods. In this work, we present a long-term analysis of symplectic …
[HTML][HTML] Vlasov description of the beam response to noise in the presence of wakefields in high-energy synchrotrons: beam transfer function, diffusion, and loss of …
SV Furuseth, X Buffat - The European Physical Journal Plus, 2022 - Springer
Noise can have severe impacts on particle beams in high-energy synchrotrons. In particular,
it has recently been discovered that noise combined with wakefields can cause a diffusion …
it has recently been discovered that noise combined with wakefields can cause a diffusion …
[KSIĄŻKA][B] Numerical Approximation of Ordinary Differential Problems: From Deterministic to Stochastic Numerical Methods
R D'Ambrosio - 2023 - books.google.com
This book is focused on the numerical discretization of ordinary differential equations
(ODEs), under several perspectives. The attention is first conveyed to providing accurate …
(ODEs), under several perspectives. The attention is first conveyed to providing accurate …
Loss of transverse Landau dam** by noise and wakefield driven diffusion
SV Furuseth, X Buffat - Physical Review Accelerators And Beams, 2020 - APS
Landau dam** of coherent modes is strongly dependent on the exact shape of the particle
bunches. One often assumes that the transverse distributions in high-energy hadron …
bunches. One often assumes that the transverse distributions in high-energy hadron …
Diffusion and memory effects for stochastic processes and fractional Langevin equations
A Bazzani, G Bassi, G Turchetti - Physica A: Statistical Mechanics and its …, 2003 - Elsevier
We consider the diffusion processes defined by stochastic differential equations when the
noise is correlated. A functional method based on the Dyson expansion for the evolution …
noise is correlated. A functional method based on the Dyson expansion for the evolution …
[HTML][HTML] Manipulation of transverse emittances in circular accelerators by crossing nonlinear 2D resonances
A Bazzani, F Capoani, M Giovannozzi - The European Physical Journal …, 2022 - Springer
Controlling nonlinear effects in the transverse dynamics of charged particle beams in
circular accelerators opens new possibilities for controlling some of the beam properties …
circular accelerators opens new possibilities for controlling some of the beam properties …
Analysis of the non-linear beam dynamics at top energy for the CERN Large Hadron Collider by means of a diffusion model
A Bazzani, M Giovannozzi… - The European Physical …, 2020 - epjplus.epj.org
In this paper, the experimental results of the recent dynamic aperture at top energy for the
CERN Large Hadron Collider are analysed by means of a diffusion model whose novelty …
CERN Large Hadron Collider are analysed by means of a diffusion model whose novelty …
On the conservative character of discretizations to Itô-Hamiltonian systems with small noise
R D'Ambrosio, S Di Giovacchino, G Giordano… - Applied Mathematics …, 2023 - Elsevier
In this paper, we consider stochastic Hamiltonian systems of Itô type driven by a
multiplicative small noise. It is well-known, indeed, that stochastic Hamiltonian problems are …
multiplicative small noise. It is well-known, indeed, that stochastic Hamiltonian problems are …