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

Metamaterial absorbers for beam-coupling impedance mitigation

WEPM085
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

Leonardo Sito (University of Naples Federico II)

Description

Charged particle bunches traversing cavity-like discontinuities in the beam pipe at relativistic velocities excite electromagnetic resonant modes that can detrimentally affect the dynamics of trailing bunches. This beam-cavity interaction, characterized in the frequency domain through the concept of beam-coupling impedance, poses significant challenges for beam stability and performance in high-energy particle accelerators. While conventional mitigation strategies encompass higher-order mode (HOM) couplers and lossy ferrite insertions, novel approaches leveraging metamaterial properties offer promising alternatives for selective mode damping. This investigation explores advanced metamaterial-based structures designed to specifically target and attenuate higher-order modes, thereby selectively reducing the beam-coupling impedance resonances.

Funding Agency

CERN

Region represented Europe
Paper preparation format LaTeX

Author

Leonardo Sito (University of Naples Federico II)

Co-authors

Benoit Salvant (European Organization for Nuclear Research) Carlo Zannini (European Organization for Nuclear Research) Francesco Fienga (European Organization for Nuclear Research) Giovanni Breglio (University of Naples Federico II)

Presentation materials

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