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  Neumann, A.; Boehlick, D.; Buechel, A.; Buerger, M.; Burrill, A.; Echevarria, P.; Frahm, A.; Glock, H.-W.; Goebel, F.; Heling, S.; Janke, K.; Kamps, T.; Keckert, S.; Klauke, S.; Klemz, G.; Knobloch, J.; Kourkafas, G.; Kuehn, J.; Kugeler, O.; Ohm, N.; Panofski, E.; Ploetz, H.; Rotterdam, S.; Schenk, M.; Stein, H.; Schmeißer, M.A.H.; Schuster, M.; Tamashevich, Y.; Ullrich, J.; Ushakov, A.; Völker, J.; Matheisen, A.: First Commissioning of an SRF Photo-Injector Module for BERLinPro. In: Gianluigi Arduini ... [Ed.] : IPAC2017 - Proceedings, Copenhagen, DenmarkJaCoW, 2017. - ISBN 978-3-95450-182-3, p. MOPVA049/1-4
  http://accelconf.web.cern.ch/AccelConf/ipac2017/papers/mopva049.pdf

Open Access Version

Abstract:
Helmholtz-Zentrum Berlin (HZB) is currently building an high average current superconducting (SRF) Energy Recovery Linac (ERL) to demonstrate ERL operation with low normalized beam emittance of 1 mm⋅mrad at 100 mA and short pulses of about 2 ps. For the injector section a series of SRF photoinjector cavities is being developed. The medium power prototype presented here features a 1.4⋅𝜆/2 cell SRF cavity with a normal-conducting, high quantum efficiency CsK2Sb cathode, implementing a modified HZDRstyle cathode insert. This injector potentially allows for 6 mA beam current at up to 3.5 MeV kinetic energy. In this contribution, the module assembly and first cool-down and RF commissioning results of the photo-injector module will be presented and compared to the level of performance during the cavity production and string assembly process.