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Hiller, N.

Paper Title Page
TU5RFP027 Observation of Coherent THz Radiation from the ANKA and MLS Storage Rings with a Hot Electron Bolometer 1153
 
  • A.-S. Müller, I. Birkel, E. Huttel, Y.-L. Mathis, N.J. Smale
    FZK, Eggenstein
  • E. Bründermann
    Ruhr-Universität Bochum, Bochum
  • T. Bückle, M. Fitterer, S. Hillenbrand, N. Hiller, A. Hofmann, V. Judin, M. Klein, S. Marsching, K.G. Sonnad
    KIT, Karlsruhe
  • J. Feikes, M.V. Hartrott
    HZB, Berlin
  • H.W. Huebers, A. Semenov
    DLR, Berlin
  • R. Klein, R. Müller, G. Ulm
    PTB, Berlin
  • G. Wüstefeld
    BESSY GmbH, Berlin
  
 

Funding: This work has partly been supported by the Initiative and Networking Fund of the Helmholtz Association under contract number VH-NG-320.


In synchrotron radiation sources coherent radiation is emitted when the bunch length is comparable to or shorter than the wavelength of the emitted radiation. A detector system based on a superconducting NbN ultra-fast bolometer with an intrinsic response time of about 100 ps jointly developed by the University of Karlsruhe (Institute of micro- and nanoelectronic systems) and German Aerospace Center (Berlin) was used to resolve the radiation emitted from single bunches. This paper reports the observations made during measurements at the MLS and ANKA storage rings.

  
TH6PFP076 Status of Schottky Diagnostics in the ANKA Storage Ring 3880
 
  • K.G. Sonnad, I. Birkel, S. Casalbuoni, E. Huttel, N.J. Smale
    FZK, Eggenstein
  • F. Caspers
    CERN, Geneva
  • N. Hiller, A.-S. Müller, K.G. Sonnad
    KIT, Karlsruhe
  • R. Weigel
    Max-Planck Institute for Metal Research, Stuttgart
  
 

Funding: This work has partly been supported by the Initiative and Networking Fund of the Helmholtz Association under contract number VH-NG-320


The status of longitudinal and transverse Schottky observation systems for the synchrotron light source ANKA is presented. ANKA regularly operates in a dedicated low alpha mode with short bunches for the generation of coherent THz radiation. The Schottky measurement results are shown and compared with theoretical predictions for the regular as well as the different stages of the low alpha mode of operation. Special care had to be taken to control and mitigate the impact from strong coherent lines of the short bunches on the signal processing chain. The system setup is shown, expected and unexpected observations as well as applications are discussed.