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

Broadband characterization of the CERN-SPS driving and detuning impedance

WEPM068
4 Jun 2025, 16:00
2h
Exhibiton Hall A _Magpie (TWTC)

Exhibiton Hall A _Magpie

TWTC

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

Speaker

Elena de la Fuente (European Organization for Nuclear Research)

Description

The CERN-SPS transverse impedance model plays an important role in predicting beam stability and guiding machine operation. This work advances the benchmarking of the SPS vertical impedance model through experimental investigations of mode-zero instability growth rates and intensity-dependent tune shifts as a function of chromaticity. Building on insights from previous measurement campaigns, this study aims to address persistent discrepancies in the high-frequency domain associated with the real driving component of the effective impedance. The 2024 campaign incorporates growth rate measurements at varied transverse tunes to eliminate potential resonance crossing effects that could artificially enhance the high-frequency mismatch. The imaginary component of the transverse impedance is likewise explored by correlating intensity-dependent tune shifts with chromaticity variations. By combining all measurements and beam dynamics simulation results, the driving and detuning impedance model of key elements will be refined, offering improved predictive capabilities for the current SPS transverse impedance model.

Region represented Europe
Paper preparation format LaTeX

Author

Elena de la Fuente (European Organization for Nuclear Research)

Co-authors

Carlo Zannini (European Organization for Nuclear Research) Giovanni Rumolo (European Organization for Nuclear Research) Hannes Bartosik (European Organization for Nuclear Research) Ingrid Mases (European Organization for Nuclear Research) Miguel González Torre (Universidad Politécnica de Madrid)

Presentation materials

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