Speaker
Description
At the electron accelerator for beams with high brilliance and low emittance (ELBE), the second version of a superconducting radio-frequency (SRF) photoinjector was brought into operation in 2014. After a period of commissioning, a gradual transfer to routine operation took place in 2017, so that now up to 1800h of user beam are generated every year. In addition to this standard mode with a few tens of microamperes, another important milestone was achieved recently. An average current of 1 mA at a repetition rate of 13 MHz was generated and further accelerated to almost 30 MeV by the ELBE LINAC. After guiding the beam to one of the IR-FELs, lasing was easily achieved and even a very sensitive user experiment was conducted. This is particularly important with regard to the successor of the ELBE accelerator called DALI, which is planned to be fed by an SRF gun with a high average current as well. The contribution presents the most important steps for achieving the full beam current and summarizes related measurement results and findings. No fundamental difficulties were identified.
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