1. F. Sannibale, D. Filippetto, C.F. Papadopoulos et al., Advanced photoinjector experiment photogun commissioning results. Phys. Rev. Spec. Top. Accel. Beams 15, 103501 (2012). https://doi.org/10.1103/PhysRevSTAB.15.103501
2. F. Sannibale, B. Bailey, K. Baptiste et al., Status of the APEX project at LBNL, in Paper Presented at the 5th International Particle Accelerator Conference (Dresden, Germany, 2014), pp. 15–20
3. J.F. Schmerge, A. Brachmann, D. Dowell et al., The LCLS-II injector design, in Paper Presented at the 36th International Free Electron Laser Conference (Basel, Switzerland, 2014), pp. 25–29
4. R. Huang, D. Filippetto, C.F. Papadopoulos et al., Dark current studies on a normal-conducting high-brightness very-high-frequency electron gun operating in continuous wave mode. Phys. Rev. Spec. Top. Accel. Beams 18, 013401 (2015). https://doi.org/10.1103/PhysRevSTAB.18.013401
5. G. Huang, K. Campbell, L. Doolittle et al., LCLS-II gun/buncher LLRF system design, in Paper Presented at the 9th International Particle Accelerator Conference, (Vancouver, Canada, 29 April–4 May 2018)