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@INPROCEEDINGS{Ghanbari:490909,
      author       = {Ghanbari, Rezvan and Wenskat, Marc and Kohantorabi, Mona
                      and Noei, Heshmat and Dangwal Pandey, Arti and Reschke,
                      Detlef and Hillert, Wolfgang},
      title        = {{I}nfluence of {H}igh-{P}ressure {R}insing on the
                      {O}xide-{L}ayer {T}hickness and {O}xygen-{C}oncentration of
                      {N}iobium {S}amples},
      reportid     = {PUBDB-2022-08117},
      pages        = {1},
      year         = {2023},
      note         = {This work was supported by the BMBF under the research
                      grants 05K19GUB,05H2021 and 05K22GUD},
      abstract     = {This study is devoted to investigate the effect of
                      High-Pressure Rinsing (HPR) on the outcome of annealing
                      procedures of Niobium (Nb) superconducting radio-frequency
                      cavities. Recently, a so-called “mid-T bake” treatment
                      has exhibited very high-quality factors for Nb cavities. The
                      complementary developed models assume that the quality
                      factor severely depends on the oxygen concentration in the
                      near-surface of niobium. On the other hand, based on our
                      observation, we realize that HPR affects the thickness of
                      oxide layers on the surface of niobium cavities, which is
                      the dominant source of the oxygen diffusion during
                      annealing. Thus, we have measured the oxide thicknesses
                      after various HPR durations of Nb samples before and after
                      applying mid-T bake treatment via X-ray Photoelectron
                      Spectroscopy (XPS) and used Secondary Ion Mass Spectrometry
                      (SIMS) to obtain the interstitial oxygen concentration after
                      the annealing. The results of this investigation will be
                      presented and discussed in the context of theoretical
                      models.},
      month         = {Mar},
      date          = {2023-03-05},
      organization  = {DPG-Frühjahrstagung 2023, Dresden
                       (Germany), 5 Mar 2023 - 31 Mar 2023},
      cin          = {MSL / UNI/EXP / FS-NL},
      cid          = {I:(DE-H253)MSL-20170609 / $I:(DE-H253)UNI_EXP-20120731$ /
                      I:(DE-H253)FS-NL-20120731},
      pnm          = {621 - Accelerator Research and Development (POF4-621)},
      pid          = {G:(DE-HGF)POF4-621},
      experiment   = {EXP:(DE-H253)SRF-RD-20221201},
      typ          = {PUB:(DE-HGF)6},
      url          = {https://bib-pubdb1.desy.de/record/490909},
}