1–6 Jun 2025
Taipei International Convention Center (TICC)
Asia/Taipei timezone

Reconstructing wake functions using Haissinski distributions from multiple bunch charges

WEPS102
4 Jun 2025, 16:00
2h
Exhibiton Hall A _Salmon (TWTC)

Exhibiton Hall A _Salmon

TWTC

Poster Presentation MC5.D04 Beam Coupling Impedance Theory, Simulations, Measurements, Code Development Wednesday Poster Session

Speaker

Stefan Funkner (Karlsruhe Institute of Technology)

Description

Accurate knowledge of wake functions is crucial in accelerator physics, serving as the cornerstone for understanding intra-bunch interactions and for controlling or mitigating instabilities that limit accelerator performance. Haissinski distributions, which describe the steady-state longitudinal bunch density, are intrinsically determined by the wake function experienced by the bunch. While these distributions are typically computed from a given wake function, we investigate the inverse problem: extracting the wake function directly from measured Haissinski distributions.
In this theoretical work, we introduce a novel method to reconstruct wake functions by utilizing Haissinski distributions obtained at multiple bunch charges. By combining these profiles into an overdetermined system, we address challenges posed by the inverse problem, which is sensitive to noise and discretization errors. Here, our preliminary results suggest that the use of regularization techniques may help achieve more stable reconstructions of the wake function.

Region represented Europe
Paper preparation format LaTeX

Author

Stefan Funkner (Karlsruhe Institute of Technology)

Co-authors

Akira Mochihashi (Karlsruhe Institute of Technology) Anke-Susanne Mueller (Karlsruhe Institute of Technology) Erik Bründermann (Karlsruhe Institute of Technology) Felipe Donoso (Karlsruhe Institute of Technology) Gudrun Niehues (Karlsruhe Institute of Technology) Johannes Steinmann (Karlsruhe Institute of Technology) Dr Markus Schwarz (Karlsruhe Institute of Technology)

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