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Darmstadt 2016 – scientific programme

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AKBP: Arbeitskreis Beschleunigerphysik

AKBP 14: Beam Diagnostics II

AKBP 14.6: Talk

Thursday, March 17, 2016, 17:45–18:00, S1/05 23

Influence of filling pattern structure on synchrotron radiation and beam spectrum at ANKA — •Johannes Steinmann, Miriam Brosi, Erik Bründermann, Michele Caselle, Edmund Blomley, Nicole Hiller, Benjamin Kehrer, Anke-Susanne Müller, Patrik Schönfeldt, Marcel Schuh, Markus Schwarz, and Michael Siegel — Karlsruher Institut für Technologie, Kaiserstr. 12, 76131 Karlsruhe

We present the effects of the filling pattern structure in multi-bunch mode on the beam spectrum. This effects can be seen by all detectors whose resolution is better than the RF frequency, ranging from stripline and Schottky measurements to high resolution synchrotron radiation measurements. Our heterodyne measurements of the emitted coherent synchrotron radiation at 270 GHz reveal the discrete frequency harmonics around the 100'000 revolution harmonic of ANKA, the synchrotron radiation facility in Karlsruhe, Germany. Significant effects of bunch spacing, gaps between bunch trains and variations in individual bunch currents on the emitted CSR spectrum are described by theory and supported by observations.

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