Wuppertal 2015 – scientific programme

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AKBP: Arbeitskreis Beschleunigerphysik

AKBP 15: Beam Dynamics / Simulation III

AKBP 15.2: Talk

Thursday, March 12, 2015, 17:00–17:15, F.10.01 (HS 4)

Fast determination of optical functions using multiturn and closed-orbit data — •Stephan Kötter, Bernard Riemann, Peter Hartmann, Benjamin Isbarn, and Thomas Weis — DELTA, TU-Dortmund, Dortmund, Germany

Today closed-orbit measurements via conventional beam position monitor (BPM) systems are established tools to derive twiss parameters in storage rings. While the application of turn-by-turn data acquisition techniques increases the availability of fast measurement data, the required expensive hardware and the related synchronization issues hamper its use. It was shown in a proof-of-principle experiment* that a minor addition of two turn-by-turn data acquisition sources to conventional beam position monitor systems holds the potential of combining the advantages of turn-by-turn and closed-orbit methods.

The introduced fast beam position monitors need to be set up in a drift space with two small orbit corrector magnets installed. By deriving the ß-function at the position of the corrector magnets, the ß-function at all conventional monitors in the storage ring can be calculated via the orbit response matrix.

Currently the described system is being implemented for robust daily use at the DELTA facility in Dortmund. This presentation will give an overview on the applied method and will illustrate the approach chosen for the implementation and the progress of developing dedicated software to steer the magnets, read out monitor data and compute beam optics parameters.

*B. Riemann et al., Phys. Rev. ST Accel. Beams 14, 062802 (2011)