Darmstadt 2016 – scientific programme

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AKBP: Arbeitskreis Beschleunigerphysik

AKBP 14: Beam Diagnostics II

AKBP 14.5: Talk

Thursday, March 17, 2016, 17:30–17:45, S1/05 23

Snapshot Measurements Used for Systematic Studies of the Bursting Threshold at ANKA — •Miriam Brosi, Edmund Blomley, Erik Bründermann, Michele Caselle, Nicole Hiller, Benjamin Kehrer, Anke-Susanne Müller, Patrik Schönfeldt, Marcel Schuh, and Johannes L. Steinmann — KIT, Karlsruhe, Germany

The ANKA storage ring at the Karlsruhe Institute of Technology (KIT) can generate brilliant coherent synchrotron radiation in the THz range by using a dedicated electron bunch length reducing optic. One challenge in the production of coherent THz radiation at synchrotrons is the high degree of spatial compression in this so-called low-alpha optics. The resulting complex longitudinal dynamics of the electron bunches, called micro-bunching instability, leads to time dependent fluctuations and strong bursts in the radiated THz intensity.

This contribution will present a quasi instantaneous method to measure the bursting characteristics by evaluating the information of all bunches in a multi-bunch fill. The reduction of the measurement time from hours down to seconds, allows the measurement of bursting characteristics for various accelerator settings within one fill.