Preprint

PUBDB-2025-00052

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Optics tuning simulations for FCC-ee using Python Accelerator Toolbox

Musa, E.DESY* ; Agapov, I. (Corresponding author)DESY* ; Charles, T.

2024

This record in other databases:  

Please use a persistent id in citations: doi:10.3204/PUBDB-2025-00052

Report No.: arXiv:2410.24129

Abstract: The development of ultra-low emittance storage rings, such as the e+/e- Future Circular Collider (FCC-ee) with a circumference of about 90 km, aims to achieve unprecedented luminosity and beam size. One significant challenge is correcting the optics, which becomes increasingly difficult as we target lower emittances. In this paper, we investigate optics correction methods to address these challenges. We examined the impact of arc region magnet alignment errors in the baseline optics for the FCC-ee lattice at Z energy. To establish realistic alignment tolerances, we developed a sequence of correction steps using the Python Accelerator Toolbox (PyAT) to correct the lattice optics, achieve the nominal emittance, Dynamic Aperture (DA), and in the end, the design luminosity. The correction scheme has been recently optimized and better machine performance demonstrated. A comparison was conducted between two optics correction approaches: Linear Optics from Closed Orbits (LOCO) with phase advance + $\eta_x$ and coupling Resonance Driving Terms (RDTs) + $\eta_y$. The latter method demonstrated better performance in achieving the target emittance and enhancing the DA.

Note: Appears in the proceedings of the 14th International Computational Accelerator Physics Conference (ICAP'24), 2-5 October 2024, Germany

---

Contributing Institute(s):

1. Beschleunigerphysik (MPY)

Research Program(s):

1. 621 - Accelerator Research and Development (POF4-621) (POF4-621)
2. FCCIS - Future Circular Collider Innovation Study (951754) (951754)

Experiment(s):

1. Future Circular Collider

Appears in the scientific report 2024

---

Database coverage:
; ; Published

---

---

Linked articles:

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Contribution to a conference proceedings Musa, E. (Corresponding author)DESY* ; Agapov, I.DESY* ; Charles, T.
Optics tuning simulations for FCC-ee using Python Accelerator Toolbox
20244th International Computational Accelerator Physics Conference, (ICAP’24), GermanyGermany, Germany, 2 Oct 2024 - 5 Oct 20242024-10-022024-10-05 JACoW Publishing 1-8 (2024) [10.3204/PUBDB-2025-00052]2024     Fulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

---