Open Access Version

Abstract:
RF photoelectron sources with superconducting cavities provide the potential to generate high quality, high brightness electron beams for future accelerator applications. At Helmholtz-Zentrum Dresden-Rossendorf, such an electron source was operated for many years. The commissioning of an improved SRF Gun with a new high-performance gun cavity with low field emission and a superconducting solenoid inside the gun cryomodule (SRF Gun II) has started in June 2014. First low current measurements as well as studies of unwanted beam transport using SRF Gun II with a Cu photocathode and an acceleration gradient up to 7 MV/m will be presented. First longitudinal beam characterization of the SRF Gun in combination with ELBE, a two-stage superconducting linear accelerator will be discussed.