Author: Brandt, G.
Paper Title Page
TUPC072 Accurate Electron Beam Size Measurement at the Metrology Light Source 1165
 
  • R. Klein, G. Brandt, R. Thornagel
    PTB, Berlin, Germany
  • J. Feikes, M. Ries, G. Wüstefeld
    HZB, Berlin, Germany
 
  For the operation of the Metrology Light Source (MLS)*, the dedicated electron storage ring of the Physikalisch-Technische Bundesanstalt (PTB), as the national primary radiation source standard from the near infrared to the vacuum ultraviolet spectral region, all storage ring parameters which are relevant for the calculation of the radiant intensity by the Schwinger equation have to be known absolutely with small uncertainties. For the measurement of the effective vertical electron beam size a Bragg polarimeter, operating at a photon energy of 1103 eV, has been designed and put into operation. This system also serves as a detection system for the image of the electron beam through a set of narrow slits. The results obtained with the new device are compared to those measured by an optical beam imaging system**.
* R. Klein et al., Phys. Rev. ST-AB 11, 110701 (2008).
** C. Koschitzki et al., Proc. IPAC10, 894-896 (2010).