Author: Mießner, J.
Paper Title Page
TUPC088 An Ionization Profile Monitor for the Determination of the FLASH and PITZ Beam Parameters 1212
 
  • J. Mießner, H.-J. Grabosch, M. Markert, R. Sternberger
    DESY Zeuthen, Zeuthen, Germany
  • A. Hofmann
    KIT, Karlsruhe, Germany
  • K.I. Tiedtke
    DESY, Hamburg, Germany
 
  To operate FLASH (Free-electron LASer at Hamburg) successfully, accurate measurements of the photon beam parameters, like position and profile, are essential. The development of a specific Ionization Profile Monitor (IPM) is one contribution to the photon beam diagnostics, and currently one horizontal and one vertical oriented IPM are installed at FLASH. The working principle of the IPM is based on the detection of ions generated by interactions of the photon beam with the residual gas, which is always present in the beam line. An essential advantage of this method is that the beam is not influenced by the IPM, so it is possible to analyze the beam parameters without beam destruction. Moreover, the monitor is able to determine the relative position and the spatial profile of the beam with the precision of a few um. In this poster, the design and first measurements with the IPM taken at FLASH are presented. A good measuring accuracy of the IPM is obtained. Moreover, first results of measurements at PITZ (PhotoInjector Testfacility at Zeuthen) are given for one vertical oriented IPM with a up to 25 MeV electron beam.