Dortmund 2021 – wissenschaftliches Programm

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AKBP: Arbeitskreis Beschleunigerphysik

AKBP 10: Synchrotron Radiation and FELs

AKBP 10.2: Vortrag

Donnerstag, 18. März 2021, 14:15–14:30, AKBPa

Status of the Short-Pulse Source at DELTA — •Hubertus Kaiser, Benedikt Büsing, Arne Held, Shaukat Khan, Daniel Krieg, Arjun Radha Krishnan, and Carsten Mai — Center for Synchrotron Radiation (DELTA),TU Dortmund University, Dortmund, Germany

The short-pulse source at the 1.5-GeV electron storage ring DELTA operated by the TU Dortmund University employs the coherent harmonic generation (CHG) technique to provide ultrashort pulses in the vacuum ultraviolet and terahertz regime. Here, a modulation of the electron energy induced by an interaction with an ultrashort laser within an undulator (modulator) tuned to the laser wavelength is transformed into a density modulation by a magnetic chicane. Recently, the influence of the Gouy phase shift in the laser pulse on the laser-electron interaction has been investigated. It causes a shift of the wavelength the undulator needs to be tuned to. Additionally, the magnetic setup of the short-pulse source allows to investigate the coherent emission of edge radiation. Furthermore, a setup for Compton backscattering featuring a high-power continuous-wave CO2 laser and a gamma-ray spectrometer will be implemented at DELTA. It allows for precise measurements of the electron beam energy and energy spread. Funded by BMBF under contract 05K19PEB.