• Meseck, A.; Bahrdt, J.; Frentrup, W.; Huck, M.; Kuhn, C.; Rethfeldt, C.; Rial, E.C.M.; Scheer, M.: Triple Period Undulator. In: Proceedings of IPAC2019, Melbourne, Australia, 19-24 May 2019Geneva, Switzerland: JACoW Publishing, 2019. - ISBN 978-3-95450-208-0, p. TUPRB022/1728-1731
    http://accelconf.web.cern.ch/AccelConf/ipac2019/papers/tuprb022.pdf

Open Access Version

Abstract:
Insertion devices are one of the key components of modern synchrotron radiation facilities. They allow for generation of radiation with superior properties enabling experiments in a variety of disciplines, such as chemistry, biology, crystallography and physics to name a few. For future cutting edge experiments in soft and tender x-rays users require high flux and variable Polarization over a wide photon energy range independent of other desired properties like variable pulse length, variable timing or Fourier transform limited pulses. In this paper, we propose a novel ID-structure, called Triple Period Undulator (TPU), which allow us to deliver a wide energy range from a few ten eV to a few keV at the same beamline with high flux and variable Polarization. The TPU are particularly interesting in context of BESSY III, the successor facility of BESSY II.