TY - JOUR AU - Ivanov, Rosen AU - Mohammadi Bidhendi, Mahdi AU - Bermudez Macias, Ivette Jazmin AU - Brachmanski, Maciej AU - Kreis, Svea AU - Bonfigt, Sussane AU - Degenhardt, Markus AU - Czwalinna, Marie Kristin AU - Pergament, Mikhail AU - Kellert, Martin AU - Kärtner, Franz AU - Duesterer, Stefan TI - Free-electron laser temporal diagnostic beamline FL21 at FLASH JO - Optics express VL - 31 IS - 12 SN - 1094-4087 CY - Washington, DC PB - Optica M1 - PUBDB-2023-01477 SP - 19146 - 19158 PY - 2023 N1 - Please choose LK1 POF, RT AB - A beamline for temporal diagnostics of extreme ultraviolet (XUV) femtosecond pulses at the free-electron laser in Hamburg (FLASH) at DESY was designed, built and put into operation. The intense ultra-short XUV pulses of FLASH fluctuate from pulse to pulse due to the underlying FEL operating principle and demand single-shot diagnostics. To cope with this, the new beamline is equipped with a terahertz field-driven streaking setup that enables the determination of single pulse duration and arrival time. The parameters of the beamline and the diagnostic setup as well as some first experimental results will be presented. In addition, concepts for parasitic operation are investigated. LB - PUB:(DE-HGF)16 C6 - 37381338 UR - <Go to ISI:>//WOS:001027209700004 DO - DOI:10.1364/OE.492228 UR - https://bib-pubdb1.desy.de/record/580920 ER -