Goslawski, P.; Andreas, F.; Armborst, F.; Atkinson, T.; Feikes, J.; Jankowiak, A.; Li, J.; Mertens, T.; Ries, M.; Schiwietz, G.; Schälicke, A.; Wüstefeld, G.: Two Orbit Operation at Bessy II - During a User Test Week. In: Mark Boland ... [Ed.] : IPAC 2019, Proceedings of the 10th International Particle Accelerator Conference: Melbourne, Australia, 19-24 May 2019. Geneva, Switzerland: JACoW Publishing, 2019. - ISBN 978-3-95450-208-0, p. THYYPLM2/3419-3422
Open Accesn Version

Operating a storage ring close to a horizontal resonance and manipulating the transverse non-linear beam dynamics can generate stable Transverse Resonance Island Buckets (TRIBs), which give a 2nd stable orbit in the ring. Both orbits can be populated with different electron bunch filling patterns and provide two different radiation sources to the user community. Such a machine setting has been established at BESSY II and was tested under realistic user conditions in a first ?TRIBs/Two Orbit User Test Week? in February 2018. Results and user feedback will be discussed in this contribution.