München 2019 – wissenschaftliches Programm

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AKBP: Arbeitskreis Beschleunigerphysik

AKBP 11: Synchrotron Radiation

AKBP 11.2: Vortrag

Mittwoch, 20. März 2019, 11:15–11:30, HS 7

Developing Beam Optics for the Future of BESSY II — •Felix Andreas1,2 and Paul Goslawski21Humboldt University of Berlin — 2Helmholtz-Zentrum Berlin

BESSY II is a third generation synchrotron light source located in Berlin. In operation for 20 years it provides extremely brilliant synchrotron light pulses in the range from Terahertz radiation to hard X-rays. First discussions about a successor have been started. However, at BESSY II due to the continuously increasing interest in short pulse operation, a major upgrade of the ring will enable simultaneous storage of long and short bunch. This Variable pulse-length Storage Ring (VSR) will be achieved by the installation of additional superconducting high gradient cavities. The cavities will be assembled into one cryomodule in one straight of the storage ring. As this module needs more space then initially assumed, one possible solution is to remove two quadrupoles to gain available installation length. We switched off the quadrupoles and optimized the linear beam optics in simulations. The different theoretical optics obtained were transferred to the storage ring. Storage of high current with reasonable injection efficiency and lifetime was possible with the best solution found. The proposed optics has to be further optimized in regards to nonlinear beam dynamics, but has shown that an the available installation length can be increased. The developed beam optics code will be further extended to study first lattice ideas for a BESSY II successor.

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