Kramer, F.; Goslawski, P.; Jankowiak, A.; Ries, M.; Ruprecht, M.; Schälicke, A.: Characterisation of the Second Stable Orbit Generated by Transverse Resonance Island Buckets (TRIBs). In: Shane Koscielniak ... [Ed.] : IPAC2018 : Proceedings of the 9th International Particle Accelerator Conference, Vancouver, BC, CanadaGeneve: JACoW, 2018. - ISBN 978-3-95450-184-7, p. TUPML052/1-4
http://accelconf.web.cern.ch/AccelConf/ipac2018/papers/tupml052.pdf
Open Access Version
Abstract:
Operating the storage ring near a transverse tune resonance [1–3] can generate TRIBs in the corresponding phase space, providing a second orbit twisting around the standard orbit. TRIBs as a bunch separation scheme in combination with the proposed variable bunch length storage ring BESSY VSR [4] represent a promising alternative to dedicated single or few bunch operation modes. The injection efficiency and stability of the two orbits at BESSY II and MLS are almost on par with and the lifetime at about 70% of the standard user mode. Results from simulations and measurements of our present island optics will be presented. Beam parameters like the betatron motion, dispersion and emittance of both the core and island orbit will be discussed as well as the separation between the island and the core orbit. At BESSY II a dedicated test week together with the friendly users took place in the first week of February, 2018