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Dresden 2020 – wissenschaftliches Programm

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AKBP: Arbeitskreis Beschleunigerphysik

AKBP 5: Beam Dynamics

AKBP 5.3: Vortrag

Dienstag, 17. März 2020, 10:00–10:15, MOL 213

Developing Beam Optics for BESSY-VSR Project — •Felix Andreas and Paul Goslawski — Helmholtz-Zentrum Berlin, Hahn-Meitner-Platz 1, 14109 Berlin

At the HZB superconducting cavities are developed for the generation of long and short electron bunches. A cavity module, consisting of two 1.5 GHz and 1.75 GHz cavities each, can be assembled into a straight of the BESSY II storage ring, if the space for the module can be enlarged by modifying the beam optics. One possible solution is to remove two quadrupoles to gain the required installation length. With a self-developed code the two quadruples were turned off in simulations and the obtained optics was transferred to the storage ring. To avoid coupled bunch instabilities low beta functions within the VSR-module are required. Therefore a tool was developed which can change the minimum beta function within the given straight by interpolating between two different optics. The sextupoles were used to optimize the phase acceptance to such an extent that they were better than in the current standard optics. In another session the optics was successful audited for user operation by testing for high current, life time, kicker lifetime, bunch length and chromaticity.

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