30 August 2026 to 3 September 2026
Whistler Conference Centre
Canada/Pacific timezone
Poster ONLY abstracts are still being accepted -- contact IBIC2026@triumf.ca | Registration is Open

Bunch‑by‑bunch phase detection and filling pattern measurement via digital I/Q demodulation

WEP034
2 Sept 2026, 16:00
2h
Ballroom C (Whistler Conference Centre)

Ballroom C

Whistler Conference Centre

Poster Presentation MC08: Machine Parameter Measurements Wednesday Poster Session 3

Speaker

Chih-Hsien Huang (National Synchrotron Radiation Research Center)

Description

A high-precision, bunch-by-bunch (BbB) synchrotron phase detection system has been developed and successfully commissioned at the Taiwan Photon Source (TPS). Designed to characterize complex beam dynamics and longitudinal filling patterns, the system operates across both the booster and storage rings. By leveraging digital in-phase and quadrature (I/Q) demodulation, the architecture systematically suppresses direct-current (DC) offsets and quadrature phase errors inherent in conventional analog schemes, achieving synchrotron phase extraction and filling pattern measurement at a 3 Hz repetition rate. The resolved BbB data are seamlessly integrated into the accelerator control framework for real-time visualization. This robust digital diagnostic framework provides the necessary precision to investigate transient beam loading and multi-bunch instabilities, establishing a critical tool for advanced beam physics studies in third-generation light sources.

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Author

Chih-Hsien Huang (National Synchrotron Radiation Research Center)

Co-authors

Yung-Sen Cheng (National Synchrotron Radiation Research Center) Jin-Kun Liao (National Synchrotron Radiation Research Center) Shu-Hwa Lee (National Synchrotron Radiation Research Center) Kuo-Tung Hsu (National Synchrotron Radiation Research Center) Pei-Chen Chiu (National Synchrotron Radiation Research Center) Chunyi Wu (National Synchrotron Radiation Research Center)

Presentation materials

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