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.

High-power, compact, continuous-wave (CW) linear electron accelerators with beam energies of up to 10 MeV are being considered for possible industrial applications. Conduction-cooled, superconducting radio-frequency (SRF) technology allows operating such machines at high electrical efficiency, thereby reducing the operating cost significantly. A prototype conduction-cooled SRF cryomodule has been designed and components are currently being manufactured. The cryomodule features a two-cell, 915 MHz SRF cavity, two cryocoolers, a fundamental power coupler, two magnetic shields, a thermal shield and warm-to-cold transitions. The cryomodule has been designed to be able to provide an energy gain of 3.5 MeV to a CW electron beam with a current of 5 mA. This contribution focusses on thermal and mechanical design aspects of the cryomodule.