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TY - UNPB AU - Zhou, F. ED - Chin, Yong Ho ED - Zhao, Zhentang ED - Petit-Jean-Genaz, Christine ED - Schaa, Volker RW TI - Review of CW Guns for XFEL J2 - Proc. of FLS2018, Shanghai, China, 5-9 March 2018 C1 - Shanghai, China T2 - ICFA Advanced Beam Dynamics Workshop T3 - 60 LA - english AB - Normal conducting RF gun as well as DC gun and superconducting RF gun are the potential technologies for generation of high-brightness beam for the CW XFELs. This talk will firstly review the three gun technologies in term of beam performances, advantages and disadvantages. LCLS-II has chosen normal conducting RF gun for the CW photoinjector. We will then update LCLS-II injector design, construction, and commissioning which is expected to start in March 2018. PB - JACoW Publishing CP - Geneva, Switzerland ER -