eeFACT2022 - List of Authors (Pieloni, T.)

Paper	Title	Page
TUZAS0104	Spin Polarization Simulations for the Future Circular Collider e⁺e⁻ using BMAD	103
	Y. Wu, T. Pieloni, L. van Riesen-Haupt EPFL, Lausanne, Switzerland F.S. Carlier CERN, Meyrin, Switzerland
	Measurements of particle properties with unprecedented accuracy in the Future Circular Collider e⁺e⁻ (FCC-ee) are reliant on the high precision center-of-mass energy calibration, which could be realized via resonant depolarization measurements. The obtainable equilibrium spin polarization levels under the influence of lattice imperfections should be estimated via spin polarization simulations. An early-stage exploration of spin simulations in the FCC-ee has been conducted using Bmad. An effective model has been used to generate residual errors for the simulation of realistic orbits after lattice corrections. The influences of depolarization effects near the first-order spin-orbit resonances are displayed in linear polarization simulations, highlighting the demand for good closed orbit control. Furthermore, the first attempts at performing nonlinear spin tracking simulations in the FCC-ee reveals the full impact of lattice perturbations.
	Slides TUZAS0104 [3.440 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-eeFACT2022-TUZAS0104
About •	Received ※ 30 November 2022 — Revised ※ 03 February 2023 — Accepted ※ 08 February 2023 — Issue date ※ 14 February 2023
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEZAT0102	Towards Beam-Beam Simulations for FCC-ee	165
	P. Kicsiny, X. Buffat, G. Iadarola, D. Schulte CERN, Meyrin, Switzerland T. Pieloni, M. Seidel EPFL, Lausanne, Switzerland
	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. The exploration and understanding of these beam-beam effects is of crucial importance for the success of the FCC-ee feasibility study. To address this challenge, a new general purpose software framework for beam dynamics simulations is currently under development at CERN. This presentation will discuss the contributions to the software development related to beam-beam effects with benchmark studies and applications.
	Slides WEZAT0102 [2.032 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-eeFACT2022-WEZAT0102
About •	Received ※ 16 November 2022 — Revised ※ 07 February 2023 — Accepted ※ 14 February 2023 — Issue date ※ 19 February 2023
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

Spin Polarization Simulations for the Future Circular Collider e⁺e⁻ using BMAD

103

Y. Wu, T. Pieloni, L. van Riesen-Haupt
EPFL, Lausanne, Switzerland
F.S. Carlier
CERN, Meyrin, Switzerland

Measurements of particle properties with unprecedented accuracy in the Future Circular Collider e⁺e⁻ (FCC-ee) are reliant on the high precision center-of-mass energy calibration, which could be realized via resonant depolarization measurements. The obtainable equilibrium spin polarization levels under the influence of lattice imperfections should be estimated via spin polarization simulations. An early-stage exploration of spin simulations in the FCC-ee has been conducted using Bmad. An effective model has been used to generate residual errors for the simulation of realistic orbits after lattice corrections. The influences of depolarization effects near the first-order spin-orbit resonances are displayed in linear polarization simulations, highlighting the demand for good closed orbit control. Furthermore, the first attempts at performing nonlinear spin tracking simulations in the FCC-ee reveals the full impact of lattice perturbations.

Slides TUZAS0104 [3.440 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-eeFACT2022-TUZAS0104

About •

Received ※ 30 November 2022 — Revised ※ 03 February 2023 — Accepted ※ 08 February 2023 — Issue date ※ 14 February 2023

Cite •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEZAT0102

Towards Beam-Beam Simulations for FCC-ee

165

P. Kicsiny, X. Buffat, G. Iadarola, D. Schulte
CERN, Meyrin, Switzerland
T. Pieloni, M. Seidel
EPFL, Lausanne, Switzerland

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. The exploration and understanding of these beam-beam effects is of crucial importance for the success of the FCC-ee feasibility study. To address this challenge, a new general purpose software framework for beam dynamics simulations is currently under development at CERN. This presentation will discuss the contributions to the software development related to beam-beam effects with benchmark studies and applications.

Slides WEZAT0102 [2.032 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-eeFACT2022-WEZAT0102

About •

Received ※ 16 November 2022 — Revised ※ 07 February 2023 — Accepted ※ 14 February 2023 — Issue date ※ 19 February 2023

Cite •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)