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

EPU coupling correction by Bayesian optimization

TUPM067
3 Jun 2025, 16:00
2h
Exhibiton Hall A _Magpie (TWTC)

Exhibiton Hall A _Magpie

TWTC

Poster Presentation MC2.T15 Undulators and Wigglers Tuesday Poster Session

Speaker

Mr Mau-Sen Chiu (National Synchrotron Radiation Research Center)

Description

APPLE-II type elliptically polarized undulators (EPUs) are widely used in synchrotron light sources to produce elliptically polarized light. However, manufacturing imperfections in EPUs can introduce a skew quadrupole component that varies with different gap and phase settings. This skew quadrupole component couples horizontal betatron motion and dispersion into the vertical plane, increasing the beam size and degrading beam quality. To address these coupling issues, EPUs are typically equipped with skew quadrupole magnets to compensate for the residual skew quadrupole component. This paper presents a method based on Bayesian optimization to generate a 2D coupling feed-forward table for coupling correction.

Region represented Asia
Paper preparation format Word

Author

Mr Mau-Sen Chiu (National Synchrotron Radiation Research Center)

Presentation materials

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