title: Free-electron laser multiplex driven by a superconducting linear accelerator.
abstract: Free-electron lasers (FELs) generate femtosecond XUV and X-ray pulses at peak powers in the gigawatt range. The FEL user facility FLASH at DESY (Hamburg, Germany) is driven by a superconducting linear accelerator with up to 8000 pulses per second. Since 2014, two parallel undulator beamlines, FLASH1 and FLASH2, have been in operation. In addition to the main undulator, the FLASH1 beamline is equipped with an undulator section, sFLASH, dedicated to research and development of fully coherent extreme ultraviolet photon pulses using external seed lasers. In this contribution, the first simultaneous lasing of the three FELs at 13.4 nm, 20 nm and 38.8 nm is presented.
authors: Department of Physics, University of Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany.
authors: Tim
authors: T
authors: Plath
authors: Department of Physics, University of Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany.
authors: Philipp
authors: P
authors: Amstutz
authors: Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany.
authors: Jörn
authors: J
authors: Bödewadt
authors: Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany.
authors: Günter
authors: G
authors: Brenner
authors: Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany.
authors: Nagitha
authors: N
authors: Ekanayake
authors: Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany.
authors: Bart
authors: B
authors: Faatz
authors: Technische Universität Dortmund, Fakultät Physik, Otto-Hahn-Strasse 4, 44227 Dortmund, Germany.
authors: Kirsten
authors: K
authors: Hacker
authors: Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany.
authors: Katja
authors: K
authors: Honkavaara
authors: Department of Physics, University of Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany.
authors: Leslie Lamberto
authors: LL
authors: Lazzarino
authors: Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany.
authors: Christoph
authors: C
authors: Lechner
authors: Department of Physics, University of Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany.
authors: Theophilos
authors: T
authors: Maltezopoulos
authors: Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany.
authors: Matthias
authors: M
authors: Scholz
authors: Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany.
authors: Siegfried
authors: S
authors: Schreiber
authors: Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany.
authors: Mathias
authors: M
authors: Vogt
authors: Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany.
authors: Johann
authors: J
authors: Zemella
authors: Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany.
authors: Tim
authors: T
authors: Laarmann
keywords: FLASH; free-electron laser; multi-color lasing; multiplex; simultaneous operation