Speaker
Description
The FCC-ee injector requires a flexible and reliable high-brightness photoinjector capable of delivering on-demand electron bunch charge. This contribution presents several concepts currently under study for both the laser and the photocathode material —ranging from high-QE semiconductors to robust metallic options— suitable for reliably producing 7 nC electron bunches. We also explore flexible electro-optic Yb-based solid-state laser systems optimized for generating tailored bunch train structures in the time domain. These are paired with advanced pulse shaping and conditioning systems that allow rapid spatio-temporal manipulation of UV pulses to ensure optimal interaction with the photocathode surface. Together, these technologies enable the FCC-ee injector to meet the demanding requirements of continuous top-up operation and sustained high-luminosity performance.
