Dresden 2013 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 125: Beschleunigerphysik XII (Kurze Pulse)
T 125.3: Vortrag
Donnerstag, 7. März 2013, 14:30–14:45, WIL-C205
Detection of ultrashort VUV radiation pulses using photoelectron spectroscopy at DELTA — •Maryam Zeinalzadeh1, Stefan Cramm2, Sven Döring3, Markus Höner1, Holger Huck1, Shaukat Khan1, Robert Molo1, Lukasz Plucinski1, Andreas Schick1, and Peter Ungelenk1 — 1Zentrum für Synchrotronstrahlung (DELTA), TU Dortmund — 2Forschungszentrum Jülich — 3Universität Duisburg-Essen
At the 1.5-GeV electron storage ring DELTA operated by the TU-Dortmund University, coherent VUV radiation is generated in a short-pulse facility based on the Coherent Harmonic Generation (CHG) scheme. In this scheme, a femtosecond laser pulse is used to induce a periodic modulation of the electron energy in an undulator. The energy modulation is converted to a density modulation in a dispersive section. The resulting electron microbunches radiate coherently at higher harmonics of the laser wavelength in a second undulator. The VUV beamline operated by the Forschungszentrum Jülich will be employed for pump-probe experiments. It comprises a plane-grating monochromator and a photoelectron spectrometer optimized for angle-resolved photoemission spectroscopy. While a dedicated setup was initially used during commissioning of the short-pulse facility, the CHG-generated pulses can now be characterized directly in the VUV beamline.