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@INPROCEEDINGS{Breede:166072,
      author       = {Breede, Heiko and Vu, Lap Van and Sachwitz, Martin and
                      Grabosch, Hans-Juergen},
      title        = {{N}ew compact design of a three-dimensional ionization
                      profile monitor ({IPM})},
      reportid     = {DESY-2014-01005},
      year         = {2014},
      abstract     = {FLASH at DESY in Hamburg is a linear accelerator, which
                      uses superconducting technology to produce soft x-ray laser
                      light ranging from 4.1 to 45 nm. To ensure the operation
                      stability of FLASH, monitoring of the beam is mandatory. Two
                      Ionization Profile Monitors (IPM) detect the lateral x and y
                      position changes. The functional principle of the IPM is
                      based on the detection of particles, generated by
                      interaction of the beam with the residual gas in the beam
                      line. The newly designed IPM enables the combined
                      determination of the horizontal and vertical position as
                      well as the profile. This is made possible by a compact
                      monitor, consisting of a cage in a vacuum chamber, two
                      micro-channel plates (MCP) and two repeller plates with
                      toggled electric fields at the opposite sides of the MCPs.
                      The particles created by the FEL beam, drift in a homogenous
                      electrical field towards the respective MCP, which produces
                      an image of the beam profile on an attached phosphor screen.
                      A camera for each MCP is used for evaluation. This indirect
                      detection scheme operates over a wide dynamic range and
                      allows the detection of the center of gravity and the shape
                      of the beam. The final design is presented.},
      month         = {Sep},
      date          = {2014-09-16},
      organization  = {International Beam Position
                       Instrumentation Conference, Oxford
                       (United Kingdom), 16 Sep 2014 - 19 Sep
                       2014},
      cin          = {ZEU-DLAB / ZEU-XFEL},
      cid          = {I:(DE-H253)ZEU-DLAB-20130226 /
                      I:(DE-H253)ZEU-XFEL-20120731},
      pnm          = {FLASH Beamline BL1 (POF2-54G16) / PETRA Beamline P04
                      (POF2-54G14)},
      pid          = {G:(DE-H253)POF2-BL1-20130405 /
                      G:(DE-H253)POF2-P04-20130405},
      experiment   = {EXP:(DE-H253)F-BL1-20150101 / EXP:(DE-H253)P-P04-20150101},
      typ          = {PUB:(DE-HGF)6},
      url          = {https://bib-pubdb1.desy.de/record/166072},
}