Speaker
Description
The European XFEL is a free-electron laser facility based on a superconducting linac with high bunch repetition rates of up to 4.5 MHz. An L-shaped corrugated structure has been installed upstream of the SASE1 undulator for fresh-slice operation and ultrashort-pulse generation. As the electron beam passes through the structure, strong longitudinal and transverse wakefields are excited which induce a correlated energy chirp and transverse kicks along the bunch. Since the gap between the corrugated structure and the beam is typically less than 1 mm, any beam misalignment or tail expansion may result in particles hitting the corrugated surfaces. For the L-shaped geometry this may occur on both the horizontal and vertical surfaces. Such interactions lead to energy deposition and secondary radiation that may cause damage to the downstream undulators. For this reason, studies have been carried out using BDSIM to simulate the losses caused by the L-shaped corrugated structure. Simulation results have been compared with in-situ radiation measurements using an autonomous robot.
| In which format do you inted to submit your paper? | LaTeX |
|---|---|
| Preprint marking on your proceeding paper | I wish my paper to be marked as preprint. |