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Würzburg 2018 – wissenschaftliches Programm

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AKBP: Arbeitskreis Beschleunigerphysik

AKBP 6: Synchrotron Radiation Sources (SR and FEL)

AKBP 6.6: Vortrag

Dienstag, 20. März 2018, 17:45–18:00, NW-Bau - HS5

Characterisation of the Second Stable Orbit Generated by Transverse Resonance Island Buckets (TRIBs) — •Felix Kramer1, 2, Paul Goslawski1, and Andreas Jankowiak1, 21Helmholtz-Zentrum Berlin, Deutschland — 2Humboldt-Universität zu Berlin, Deutschland

Operating the storage ring near a transverse tune resonance can generate TRIBs in the corresponding phase space, providing a second orbit winding around the standard orbit. TRIBs represent a novel bunch separation scheme for photon sources. In combination with the variable bunch length storage ring BESSY VSR *, the proposed upgrade for BESSY II, they provide a promising alternative to dedicated single or few bunch operation modes. Lifetime and stability of the two orbits at BESSY II and MLS are on par with the standard user modes. Results from simulations and measurements of our current island optics at BESSY II will be presented. Beam parameters like the betatron motion, dispersion, and emittance of both the core and island beam will be discussed as well as the separation between the core and island beam. At BESSY II a test week with friendly users is scheduled for the first quarter of 2018.

* A. Jankowiak et al., eds., BESSY VSR Technical Design Study, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Germany, June 2015. DOI: 10.5442/R0001

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