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@ARTICLE{Gruber:614121,
      author       = {Gruber, Markus and Desch, Klaus and Kaminski, Jochen and
                      Richarz, Leonie},
      title        = {{D}evelopment of a {G}rid{P}ix {X}-ray polarimeter},
      journal      = {Journal of physics / Conference Series},
      volume       = {2374},
      number       = {1},
      issn         = {1742-6588},
      address      = {Bristol},
      publisher    = {IOP Publ.},
      reportid     = {PUBDB-2024-05755},
      pages        = {012148},
      year         = {2022},
      abstract     = {In gaseous detectors it is possible to determine the
                      polarization of an X-ray beam by tracking photoelectrons
                      which are created in photoelectric interactions of the
                      photons with the gas molecules. Based on the differential
                      cross section of this interaction the emission angle of the
                      photoelectrons is correlated with the polarization plane of
                      the beam.Depending on the photon energy and on scattering of
                      the photoelectrons on gas molecules the length of the
                      relevant part of the track is only in the order of a few
                      hundred microns. Thus, a high tracking resolution is needed.
                      This is achieved with the GridPix [1] - a combination of the
                      highly granular Timepix pixel ASIC [2] and a
                      photolithographically postprocessed MicroMegas called InGrid
                      which holes are aligned with the pixels of the ASIC.Such a
                      detector was operated in a testbeam at the P09 beamline [3]
                      of PETRA III with a $99\%$ linear polarized beam and a
                      modulation factor of $77\%$ was measured. Furthermore, tests
                      of different gas pressures and different beam energies were
                      performed.},
      cin          = {DOOR ; HAS-User},
      ddc          = {530},
      cid          = {I:(DE-H253)HAS-User-20120731},
      pnm          = {6G3 - PETRA III (DESY) (POF4-6G3) / FS-Proposal: I-20200649
                      (I-20200649)},
      pid          = {G:(DE-HGF)POF4-6G3 / G:(DE-H253)I-20200649},
      experiment   = {EXP:(DE-H253)P-P09-20150101},
      typ          = {PUB:(DE-HGF)16},
      doi          = {10.1088/1742-6596/2374/1/012148},
      url          = {https://bib-pubdb1.desy.de/record/614121},
}