Author: Klein, R.
Paper Title Page
WEPF34 Accurate Measurement of Small Electron Beam Currents at the MLS Electron Storage Ring 903
  • R. Klein, G. Brandt, D. Herzog, R. Thornagel
    PTB, Berlin, Germany
  The PTB, the German metrology institute, utilizes the electron storage ring MLS in Berlin Adlershof for the realization of the radiometric units in ultraviolet and vacuum ultraviolet spectral range. For this purpose the MLS can be operated as a primary source standard of calculable synchrotron radiation with very flexible parameters, especially in terms of electron beam energy and electron beam current. We report on improvements in the measurement of the electron beam current in the nA and pA range. In this range the electron beam current can be very accurately measured by counting the stored electrons.