JACoW is a publisher in Geneva, Switzerland that publishes the proceedings of accelerator conferences held around the world by an international collaboration of editors.
TY - UNPB AU - Arnold, A. AU - Ciovati, G. AU - Freitag, M. AU - Justus, M. AU - Kneisel, P. AU - Lehnert, U. AU - Lu, P.N. AU - Ma, S. AU - Michel, P. AU - Murcek, P. AU - Ryzhov, A.A. AU - Schaber, J. AU - Schneider, Ch. AU - Steinbrück, R. AU - Teichert, J. AU - Vennekate, H. AU - Xiang, R. ED - Saito, Kenji ED - Xu, Ting ED - Sakamoto, Naruhiko ED - Schaa, Volker R.W. ED - Thomas, Paul W. TI - Operational Experience From 8 Years of ELBE SRF-Gun II J2 - Proc. of SRF2023, Grand Rapids, MI, USA, 25-30 June 2023 CY - Grand Rapids, MI, USA T2 - International Conference on RF Superconductivity T3 - 21 LA - english AB - 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 more than 1800h of user beam are generated every year. Since the commission, a total of 24 cathodes (2 Cu, 12 Mg, 10 Cs₂Te) have been used, without observing serious cavity degradation. The contribution summarizes commissioning and operational experience of the last 8 years of gun operation, with special emphasis on SRF properties but also on specialties such as dark current and multipacting that are directly linked to the integration of a normal conducting cathode into the SRF cavity. PB - JACoW Publishing CP - Geneva, Switzerland ER -