Speaker
Description
A high-performance electron source is required for a stable operation of an electron accelerator and future colliders. For this purpose, the electron beam is generated in an RF photocathode-based electron gun by irradiating the photocathode with laser light. Typically, a few tens of femtosecond laser systems are routinely used to generate a pre-bunched electron beam of a few hundred femtoseconds. Recently a novel Yb-dopped fiber-based laser system with enhanced tunability and stability is being developed under KEK-IUAC collaboration to generate the electron beam for the compact THz facility of IUAC. The laser system can potentially deliver MHz-GHz-THz sequence of femtosecond pulses which populates every RF window (typically Hz rate) energizing the photocathode-based electron gun and generates a low emittance electron beam of the identical temporal structure. In this report, the present status of the laser system as well as its output parameters achieved to date will be presented. The performance characteristics and its tunability ranges will be shown and a roadmap for future developments will be discussed.
