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@INPROCEEDINGS{Engels:907194,
      author       = {Engels, Ralf W. and Lehrach, Andreas and Büscher, Markus
                      and Bilen, Onur and Smitmanns, Hendrik and Grigoryev,
                      Kirill},
      title        = {{I}nitial storage cell coating ${R}\&{D}$ for {LHCS}pin},
      reportid     = {FZJ-2022-01882},
      year         = {2022},
      abstract     = {Like the ANKE experiment at COSY a polarized internal
                      storage-cell target in front of the LHCb detector is the aim
                      of the LHCSpin Projekt at CERN. This target will be an
                      openable T-shaped tube that will be fed with a beam of
                      polarized hydrogen atoms from an atomic beam source (ABS)
                      operating according to the Stern-Gerlach principle. One
                      critical detail of such a storage cell is the surface
                      coating that should minimize polarization losses due to wall
                      collisions and recombination of the atoms into less
                      polarized molecules. Due to the restrictions of the LHC
                      operations a carbon coating seems to be the only option, but
                      this has never been investigated for storage cells.At the
                      Institut für Kernphysik at Forschungszentrum Jülich, a
                      setup is in use dedicated to study polarization losses in
                      storage cells as a function of surface materials,
                      temperature, magnetic holding fields or recombination
                      processes. Therefore, this setup is a good tool to
                      investigate carbon coated storage cells for further use at
                      LHC.Additionally, due to a slight modification of the ABS
                      the influence of Lyman-α photons on the recombination
                      process of hydrogen on the surface can be investigated.In
                      this talk, the setup of the storage cell investigations will
                      be presented and the recombination process of hydrogen on a
                      carbon surface will be discussed. The latter is also of
                      interest for understanding the formation of molecular
                      hydrogen in interstellar clouds.},
      month         = {Apr},
      date          = {2022-04-06},
      organization  = {PBC mini-workshop on Vacuum, Coating
                       and Surface technologies, CERN
                       (Switzerland), 6 Apr 2022 - 6 Apr 2022},
      subtyp        = {Invited},
      cin          = {IKP-2 / IKP-4 / PGI-6},
      cid          = {I:(DE-Juel1)IKP-2-20111104 / I:(DE-Juel1)IKP-4-20111104 /
                      I:(DE-Juel1)PGI-6-20110106},
      pnm          = {612 - Cosmic Matter in the Laboratory (POF4-612)},
      pid          = {G:(DE-HGF)POF4-612},
      typ          = {PUB:(DE-HGF)6},
      url          = {https://juser.fz-juelich.de/record/907194},
}