Nov 12 – 14, 2025
Hotel Lahan, Pohang, Korea
Asia/Seoul timezone

Microwave Instability Study in an Intense Storage Ring

Nov 13, 2025, 10:00 AM
20m
5F Grand Hall (LAHAN Hotel)

5F Grand Hall

LAHAN Hotel

Oral Working group 2: Beam physics, diagnostics and novel techniques

Speaker

Weijie Fan (Shanghai Advanced Research Institute, Chinese Academy of Sciences)

Description

In modern storage rings, microwave instability frequently represents a critical performance-limiting factor. The Shanghai Advanced Light Source Test Facility (SLIGHT) is a storage ring-based light source designed to generate fully coherent X-ray radiation, featuring exceptionally strong damping capabilities and high beam current operation. To achieve intense X-ray free-electron laser (FEL) radiation with a relatively high average power, SLIGHT maintains beam parameters characterized by high intensity, short bunch length, and reduced momentum compaction factor, which heighten the significance of microwave instability. Notably, when particles propagate through bending magnets, there would be substantially stronger coherent synchrotron radiation (CSR) effects compared to conventional light sources. Furthermore, the implementation of multiple damping wigglers to achieve short damping times produces intense coherent wiggler radiation (CWR). Given these considerations, thorough investigation of microwave instability becomes imperative. This paper provides a comprehensive characterization of the dominant THz-scale short-range wake fields in the SLIGHT storage ring and investigates the corresponding microwave instability thresholds

Paper submission Plan Yes
Best Presentation No

Primary author

Weijie Fan (Shanghai Advanced Research Institute, Chinese Academy of Sciences)

Presentation materials

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