Jul 19 – 21, 2017
DESY, Zeuthen
Europe/Berlin timezone

SP9: Next Generation Field Detectors

Jul 21, 2017, 11:24 AM
SR3 (DESY, Zeuthen)


DESY, Zeuthen

Platanenallee 6 15738 Zeuthen Germany
Speedposter_Controls, Synchronisation and Stability Speed-Posterpresentation: Controls, Synchronization, Stability


Ms Louise Springer (DESY)


For a reliable and robust operation of free-electron lasers with bunch-arrival time variations on the sub 10fs scale, the short-term and long-term stability of the cavity field is an important factor. Modern field-detectors using the non-IQ sampling scheme achieve at 1.3GHz operating frequency 0.01% amplitude, respectively 0.0035deg phase or 4fs stability within a measuring bandwidth of 1MHz. Front-end mixer, LO-geenration and todays available sampling ADCs are the main limitations. To overcome their 1/f-noise, we investigate interferometer based amplitude and phase detectors. In detail we compare conventional phase noise measurements using saturated mixers and interferometric techniques.

Primary author


Presentation materials