Speaker
Description
Fine control of the electron bunch properties in the photoinjector is a key aspect for optimization of free-electron lasers (FELs) such as the Free-Electron Laser in Hamburg (FLASH) and the European XFEL. With the installation of a new fiber-based photocathode laser frontend with in-line spectral shaping capabilities at the Photo Injector Test facility at DESY in Zeuthen (PITZ) new longitudinal electron bunch properties can be manipulated.
This new 4.5 MHz repetition rate photocathode laser system can be optionally coupled with a transverse spatial light modulator (SLM) to apply arbitrary transverse masking of the laser pulse effectively becoming a programmable, “virtual” beam shaping aperture (BSA). This permits many fascinating possibilities from simple homogenization of the laser spot on the cathode, elliptical truncated Gaussian distributions, and more. All with the aim of providing µJ UV laser pulses at the photocathode.
The on-table layout, experimental results, and preliminary electron beam results are presented alongside future planned optical diagnostic capabilities and feedback systems.
| Region represented | Europe |
|---|---|
| Paper preparation format | Word |
