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TY - CONF AU - Bechthold, V. AU - Aulenbacher, K. AU - Dehn, M.A. AU - Friederich, S. ED - Ramberger, Suitbert ED - Draper, Mick ED - Schaa, Volker RW TI - Investigation of K₂CsSb Photocathodes J2 - Proc. of ERL2017, Geneva, Switzerland, June 18-23, 2017 C1 - Geneva, Switzerland T2 - ICFA Advanced Beam Dynamics Workshop T3 - 59 LA - english AB - The interest in multi alkali antimonide photocathodes, e.g. K₂CsSb, for future ERL projects like BERLinPro (Berlin Energy Recovery Linac Prototype) and MESA (Mainz Energy-Recovering Superconducting Accelerator) has grown in recent years. In particular for the case of RF-sources the investigation of the time response is of great importance. In Mainz we are able to synthesize these kinds of photocathodes and investigate their pulse response at 1 picosecond level using a radio frequency streak method. We present on the one hand the cathode plant which is used for synthesizing the multi alkali antimonide photocathodes and on the other hand first measurements showing pulse responses of K₂CsSb at 400 nm laser wavelength. Furthermore, an analyzing chamber has been installed, which allows investigation of lifetime under laser heating and in-situ measurements of the work function using a UHV Kelvin Probe. PB - JACoW Publishing CP - Geneva, Switzerland SP - 4 EP - 8 KW - cathode KW - laser KW - electron KW - vacuum KW - experiment DA - 2018/05 PY - 2018 SN - 978-3-95450-190-8 DO - 10.18429/JACoW-ERL2017-MOPSPP004 UR - http://jacow.org/erl2017/papers/mopspp004.pdf ER -