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AKBP: Arbeitskreis Beschleunigerphysik

AKBP 11: Synchrotron Radiation

AKBP 11.5: Talk

Wednesday, March 20, 2019, 12:00–12:15, HS 7

Two Orbit Operation at Bessy II - During a User Test Week — •Paul Goslawski, Felix Armborst, Felix Andreas, and Markus Ries — Helmholtz-Zentrum Berlin, BESSY II

Operating a storage ring close to a horizontal resonance and manipulating the non-linear dynamics by non-linear magnets could generate Transverse Resonance Island Buckets (TRIBs), which provide a 2nd stable orbit in the machine. Both orbits can be populated with different electron bunch fill pattern and provide to some extent two different radiation sources to the user community. At BESSY II, the aim is to establish a real operation mode and provide a multi-bunch train on the standard orbit for average brightness and a single or a few bunch fill on the island orbit for the timing user community. A first 'Two Orbit User Test Week' has been conducted in February 2018 and results and user feedback will be discussed in this contribution.