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HK: Fachverband Physik der Hadronen und Kerne

HK 71: Beschleunigerphysik XII (Kurze Pulse)

HK 71.1: Vortrag

Donnerstag, 7. März 2013, 14:00–14:15, WIL-C205

Novel Drift compensation for a femtosecond laser system at a quasi-cw electron accelerator — •Bertram Green, Michael Kuntzsch, Sergei Kovalev, and Michael Gensch — Helmholtz-Zentrum Dresden-Rossendorf

A method for electron beam/THz to femtosecond (fs) - laser synchronization drift correction at the quasi-cw linear electron accelerator ELBE is presented, which is utilizing THz radiation generated by a CDR/CTR screen and an undulator respectively. Measurements of these pulses will allow for compensation of slow drifts in the arrival time on millisecond timescales between the THz and the fs-laser pulses. The method requires two electro-optic detection setups which allow for the sampling of a single THz pulse, at two different working points. Given a consistent pulse shape these two data points can provide information on the sign of the arrival time drift relative to the laser. This information can be used both for providing feedback on fs laser arrival time in a potential THz time domain experiment as well as the electron bunch arrival time in the accelerator.