17–22 May 2026
C.I.D
Europe/Zurich timezone

Simulation-Based Optimization of RF Cavity PI Controllers for Beam Stability in High-Current Storage Rings

THP5650
21 May 2026, 16:00
2h
C.I.D

C.I.D

Deauville, France
Poster Presentation MC5.D05: Coherent and Incoherent Instabilities Theory, Simulations, Code Development Poster session

Speaker

Tianlong He (University of Science and Technology of China)

Description

In high-current electron storage rings, tuning the radio-frequency (RF) cavity’s proportional-integral (PI) controller is crucial for beam stability. Traditional online trial-and-error methods risk beam loss due to improper parameter settings. This paper proposes a pre-commissioning method based on particle-tracking simulations that self-consistently model the coupled beam-cavity-feedback dynamics. The method delineates a theoretically stable operating region for the PI controller, providing reliable guidance for initial online settings. Applied to the Super Tau-Charm Facility (STCF) parameters, it successfully identifies stable operating ranges for the feedback parameters. This simulation-based approach not only promises to guide design and commissioning but also substantially mitigates the risk of beam loss during operation.

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Author

Wenshu Liang (University of Science and Technology of China)

Co-authors

Tianlong He (University of Science and Technology of China) Qing Luo (University of Science and Technology of China) Zhenghe Bai (University of Science and Technology of China)

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