The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
TY - CONF AU - Kühn, J. AU - Bürger, M. AU - Frahm, A. AU - Jankowiak, A. AU - Kamps, T. AU - Klemz, G. AU - Kourkafas, G. AU - Murcek, P. AU - Neumann, A. AU - Ohm, N. AU - Schmeißer, M. AU - Schuster, M. AU - Teichert, J. AU - Völker, J. ED - Koscielniak, Shane ED - Satogata, Todd ED - Schaa, Volker RW ED - Thomson, Jana TI - A Cu Photocathode for the Superconducting RF Photoinjector of BERLinPro J2 - Proc. of IPAC2018, Vancouver, BC, Canada, April 29-May 4, 2018 C1 - Vancouver, BC, Canada T2 - International Particle Accelerator Conference T3 - 9 LA - english AB - The initial commissioning of the Superconducting RF (SRF) photoinjector is done with a Cu photocathode due to its robustness with regard to interactions with the SRF cavity of the injector. Here we present the preparation and characterization of a Cu photocathode plug and the diagnostics to insert the photocathode in the back wall of the SRF cavity. A polycrystalline bulk Cu plug was polished, particle free cleaned and characterized by x-ray photoelectron spectroscopy. During the transfer of the photocathode insert into the gun module the whole process was controlled by several diagnostic tools monitoring the insert position as well as RF, vacuum and cryogenic signals. We discuss the challenges of the photocathode transfer into an SRF cavity and how they can be tackled. PB - JACoW Publishing CP - Geneva, Switzerland SP - 1247 EP - 1250 KW - cathode KW - gun KW - SRF KW - cavity KW - laser DA - 2018/06 PY - 2018 SN - 978-3-95450-184-7 DO - 10.18429/JACoW-IPAC2018-TUPMF002 UR - http://jacow.org/ipac2018/papers/tupmf002.pdf ER -