3 papers
physics.acc-ph2026
Transverse coupled-bunch instabilities driven by high-order modes near the coupling resonance
You Sun, Weiwei Li, Tianlong He +3
Betatron coupling near the difference resonance has been explored and adopted in several fourth-generation storage rings, yet its influence on high-order-mode-driven transverse cou…
physics.acc-ph2026
Particle swarm optimization fitting of long-range wake potentials for trapped-mode parameter characterization in the HALF storage ring
Haiyan Yao, Tianlong He, Xiaoyu Liu +2
Accurate extraction of trapped-mode impedance parameters of complex storage ring components is essential for assessing their impact on coupled-bunch instabilities. This paper propo…
physics.acc-ph2025
Impact of short-range wakefields from radio-frequency cavity resonant modes on bunch lengthening
Tianlong He, Jincheng Xiao, Weiwei Li +2
The high-performance operation of fourth-generation synchrotron light sources critically depends on harmonic cavities (HCs) to alleviate statistical collective effects through bunc…