Online Studies of THz-radiation in the Bursting Regime at ANKA

Miriam Brosi, Michele Caselle, Edmund Hertle, Nicole Hiller, Andreas Kopmann, Anke-Susanne Müller, Markus Schwarz, Patrik Schönfeldt, Johannes Steinmann, Marc Weber, Henderson, Stuart (Ed.), Akers, Evelyn (Ed.) (+2 others)
The ANKA storage ring of the Karlsruhe Institute of Technology (KIT) operates in the energy range from 0.5 to 2.5 GeV and generates brilliant coherent synchrotron radiation in the THz range with a dedicated bunch length reducing optic. The producing of radiation in the so-called THz-gap is challenging, but this intense THz radiation is very attractive for certain user experiments. The high degree of compression in this so-called low-alpha optics leads to a complex longitudinal dynamics of the
more » ... ectron bunches. The resulting micro-bunching instability leads to time dependent fluctuations and strong bursts in the radiated THz power. The study of these fluctuations in the emitted THz radiation provides insight into the longitudinal beam dynamics. Fast THz detectors combined with KAPTURE, the dedicated KArlsruhe Pulstaking and Ultrafast Readout Electronics system developed at KIT, allow the simultaneous measurement of the radiated THz intensity for each bunch individually in a multi-bunch environment. This contribution gives an overview of the first experience gained using this setup as an online diagnostics tool.
doi:10.18429/jacow-ipac2015-mopha042 fatcat:zap5kzfucfgvhehf7gu5ifwz4u