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@MASTERSTHESIS{Lamaack:603182,
      author       = {Lamaack, Jonas},
      othercontributors = {Hillert, Wolfgang and Kube, Gero},
      title        = {{N}ew {B}eam {P}osition {M}onitor {S}ystem for {PETRA}
                      {IV}},
      school       = {University of Hamburg},
      type         = {Bachelorarbeit},
      reportid     = {PUBDB-2024-00819},
      pages        = {41},
      year         = {2024},
      note         = {Bachelorarbeit, University of Hamburg, 2024},
      abstract     = {The PETRA IV project at DESY aims to upgrade the present
                      synchrotron radiation sourcePETRA III into a source of
                      ultra-low emittance with target emittance of 20pmrad.
                      Thesmall beam emittance translates directly into much
                      smaller beam sizes of about 7 μmhorizontally and 3 μm
                      vertically at insertion device source points, thus imposing
                      stringentrequirements on the machine’s stability. To
                      measure beam position and control orbitstability to the
                      required level of accuracy, a high-resolution BPM system
                      consisting ofapprox. 800 individual monitors will be
                      installed. Its readout electronics will be based onMTCA.4 as
                      a technical platform. To fulfill the long-term drift
                      requirement (< 1 μm over 6days), the concept of
                      crossbar-switching was extended in a way that the analog RF
                      switchmatrix is separated from the readout electronics and
                      placed as close to the BPM pickupas possible, therefore
                      enabling the stabilization of the RF cables. A new RTM card
                      withseveral analog and digital parts taken from the Libera
                      Brilliance+ has been developed andis currently used as the
                      BPM electronic front end. At present, a fully populated
                      MTCAcrate with 6 2BPMRTM and 6 commercial AMC boards for the
                      readout of 12 BPMs isinstalled at PETRA III. This thesis is
                      a performance evaluation of the new system andsummarizes the
                      latest beam measurements, showing that the performance
                      requirementsfor PETRA IV are met.},
      cin          = {MDI},
      cid          = {I:(DE-H253)MDI-20120806},
      pnm          = {621 - Accelerator Research and Development (POF4-621)},
      pid          = {G:(DE-HGF)POF4-621},
      experiment   = {EXP:(DE-H253)PETRAIII(machine)-20150101 /
                      EXP:(DE-H253)PETRAIV-20220101},
      typ          = {PUB:(DE-HGF)2},
      url          = {https://bib-pubdb1.desy.de/record/603182},
}