Wuppertal 2015 – wissenschaftliches Programm
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AKBP: Arbeitskreis Beschleunigerphysik
AKBP 15: Beam Dynamics / Simulation III
AKBP 15.5: Vortrag
Donnerstag, 12. März 2015, 17:45–18:00, F.10.01 (HS 4)
Multi Beam Storage in Transverse Resonance Island Buckets at MLS and BESSY II — •Paul Goslawski, Joerg Feikes, Tobias Goetsch, Ji Li, Markus Ries, Martin Ruprecht, Andreas Schälicke, and Godehard Wüstefeld — Helmholtz-Zentrum Berlin, HZB
Operating a storage ring at a working point close to horizontal resonances (fx/f0 = 1/2, 1/3 or 1/4) generates two, three or four resonance island buckets in the x,x′ phase space. Several beams can be stored simultaneously in these buckets. First experiments with such an operation mode have been conducted at the Metrology Light Source (MLS) and then applied at BESSY II. This operation mode enables spatially or angularly separated beams with different properties such as filling pattern, bunch length, beam intensity or subharmonic revolution frequencies. We will present experimental results as well as operational experience at the MLS and BESSY II such as tuning the machine for high current, controlling intra-bucket diffusion rates or improving the overall lifetime.
This mode allows for a more flexible operation of the machine having the potential to simultaneously fulfil diverse user demands, e.g., real single bunch operation.