Speaker
Description
The Korea-4GSR (4th Generation Storage Ring) requires a highly stable and precisely synchronized laser pulse train to drive its photocathode RF gun in multi-bunch mode. To meet this requirement, we developed a laser system capable of generating nanosecond-interval pulse trains with femtosecond-level timing control. The pulse train is formed using a beam-split/delay-and-combine method, producing a 64-pulse sequence with 2 ns separation, synchronized to a 500 MHz RF reference.
To further enhance synchronization accuracy and diagnose timing jitter at the femtosecond scale, a 500 MHz femtosecond oscillator is being developed and integrated into the system. This fs-oscillator enables precise timing diagnostics, long-term drift monitoring, and improved stability for multi-bunch operation. The combined system is designed to provide low-emittance, low-energy-spread electron bunches required for Korea-4GSR’s high-brightness injector and ensures reliable operation in both single-shot and multi-bunch modes.
| Paper status | Proceeding files received |
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