The effects on beam dynamics from long-range and short-range wakefields from TESLA-type cavities are considered in regard to a proposed FEL oscillator (FE-LO) operating at 120 nm. This would be driven by the Fermilab Accelerator Science and Technology (FAST) linac at 300 MeV with a 3-MHz micropulse repetition rate. Our wakefield studies showed measurable effects on submacropulse centroid stability and on submicropulse head-tail kicks that can lead to emittance degradation. In the case of the former, we use MINERVA/OPC to simulate the ~100-μm centroid slew effects on the saturated output power levels of the FELO.
@article{arxiv.2208.11773,
title = {Considerations on wakefield effects in a VUV FELO driven by a superconducting tesla-type linac},
author = {Alex H. Lumpkin and Henry P. Freund and Peter Van der Slot},
journal= {arXiv preprint arXiv:2208.11773},
year = {2022}
}