Description
A twin-bunch scheme, which accelerates two electron bunches with small time separation, is important for generating high intensity two-color free-electron laser (FEL) pulses. It can also be used in beam-driven plasma acceleration to boost the beam energy of the witness bunch. At the European XFEL, such capability of generating twin bunches from the injector is enabled by the NEPAL-X laser that recently came into operation. This new laser has the flexibility to provide two drive laser pulses with a controllable time delay, which then allows twin electron bunches to be accelerated and compressed downstream.
This work project aims to study the twin-bunch beam dynamics at the European XFEL injector up to 135 MeV. The candidate will have close interactions with injector experts from the laser side and accelerator side. The outcome will be a set of simulation setups with different time delays from the laser for further acceleration downstream. The candidate will have the possibility to participate in the twin-bunch experiment during facility development week.
| Group | MXL |
|---|---|
| Project Category | B3. Research on Accelerators |
| Special Qualifications | Experience with simulation code ASTRA is preferable |
