Clarke, C.I. Allen, J.M. Alsberg, L.E. Ariniello, R. Cao, G.J. Corde, S. Doss, C.E. Edelen, A.L. Ekerfelt, H.E. Emma, C. Gerstmayr, E. Gessner, S.J. Hansel, C.E. Hast, C. Hogan, M.J. Joshi, C. Knetsch, A. Lee, V. Litos, M.D. Loney, R. Marsh, K.A. Meuren, S. Miskovich, S.A. Nie, Z. O’Shea, B.D. Parker, M. Reis, D.A. San Miguel Claveria, P. Storey, D.W. Wang, J. Watt, R. Yocky, G. Zhang, C. JACoW Publishing Geneva, Switzerland 2226-0366 978-3-95450-215-8 10.18429/JACoW-LINAC2022-WE1AA03 English 631-635 plasma electron experiment laser diagnostics Contribution to a conference proceedings 2022 2022-09 https://doi.org/10.18429/JACoW-LINAC2022-WE1AA03 https://jacow.org/linac2022/papers/we1aa03.pdf FACET-II is a National User Facility at SLAC National Accelerator Laboratory providing 10 GeV electron beams with um-rad normalised emittance and peak currents exceeding 100 kA . FACET-II operates as a National User Facility while engaging a broad User community to develop and execute experimental proposals that advance the development of plasma wakefield accelerators. FACET-II is currently commissioned and has started with first experiments. The special features of FACET-II will be shown and first results from the experiments.