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TY - UNPB AU - Kühn, J. ED - Ramberger, Suitbert ED - Draper, Mick ED - Schaa, Volker RW TI - Semiconductor Photocathode Development for the BERLinPro SRF Photoinjector J2 - Proc. of ERL2017, Geneva, Switzerland, June 18-23, 2017 C1 - Geneva, Switzerland T2 - ICFA Advanced Beam Dynamics Workshop T3 - 59 LA - english AB - At HZB an ERL type accelerator, called BERLinPro, is being built. Cs-K-Sb photocathodes have been identified as electron source for low emittance and high current operation (100 mA). At the moment, the SRF-photoinjector for BERLinPro with an extensive diagnostics beam line is in the commissioning phase, which will also serve as a testbed to assess the performance of in-house produced Cs-K-Sb photocathodes. The deposition of Sb, K and Cs in order to prepare Cs-K-Sb photocathodes is demanding and requests an ultra-high vacuum. Even marginal changes to the process may influence the spectral quantum efficiency, the emittance and the lifetime of the photocathode, and hence change the characteristics of the electron bunch in the SRF-photoinjector. In my talk I will present the latest results of our photocathode research and I will give an update on the status of the SRF-photoinjector and BERLinPro. PB - JACoW Publishing CP - Geneva, Switzerland ER -