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@INPROCEEDINGS{Schneekloth:193125,
      author       = {Schneekloth, Uwe and Goerrissen, Nico and Kube, Gero and
                      Neugebauer, Joerg and Neumann, Reinhard and Schmidt-Foehre,
                      Frank},
      title        = {{C}alibration of {O}lympus/{D}oris {B}eam {P}osition
                      {M}onitors},
      reportid     = {PUBDB-2014-04554},
      year         = {2014},
      note         = {OA},
      abstract     = {The goal of the OLYMPUS experiment is a precise measurement
                      of the ratio of the positron-proton and electron- proton
                      elastic scattering cross sections in order to quantify the
                      effect of two-photon exchange. The experiment was performed
                      using intense beams of electrons and positrons stored in the
                      DORIS ring at Deutsches Elektronen Synchrotron in Hamburg,
                      impinging on an unpolarized, internal, hydrogen gas target.
                      An essential ingredient of the experiment is a precise
                      determination of the luminosity, which requires a precise
                      knowledge of the beam position of both beam species. During
                      DORIS operation cylindrical button beam position monitors,
                      read out by two independent electronics systems, were
                      mounted up- and down- stream of the target chamber. After
                      the end of operation, the readout systems were
                      cross-calibrated. The BPMs were then calibrated using a
                      test-stand, consisting of a wire scanner assembly. The beam
                      was simulated by applying an RF signal to the wire. This
                      paper describes the calibration principles and test setup,
                      together with the results compared to the expected BPM
                      response.},
      month         = {Sep},
      date          = {2014-09-14},
      organization  = {International Beam Instrumentation
                       Conference, Monterey (USA), 14 Sep 2014
                       - 18 Sep 2014},
      cin          = {OLYMP},
      cid          = {I:(DE-H253)OLYMP-20120731},
      pnm          = {Experiments at DORIS (OLYMPUS) (POF2-515)},
      pid          = {G:(DE-H253)POF2-DORIS-Exp.-(OLYMPUS)-20130405},
      experiment   = {EXP:(DE-H253)OLYMPUS-20150101},
      typ          = {PUB:(DE-HGF)8},
      url          = {https://bib-pubdb1.desy.de/record/193125},
}