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@TECHREPORT{Michelato:166446,
      author       = {Michelato, P. and Bertucci, M. and Navitski, A. and Singer,
                      W. and Singer, X. and Tamashevich, Y. and Pagani, C.},
      title        = {{A}n x-ray fluorescence probe for defect detection in
                      superconducting 1.3 {GH}z cavities},
      number       = {TUP110},
      reportid     = {DESY-2014-01350, TUP110},
      note         = {Proceedings will be published on JACoW},
      abstract     = {The aim of this project is to develop a system for defect
                      detection by means of X-ray fluorescence (XRF) analysis. XRF
                      is a high sensitivity spectroscopy technique allowing the
                      detection of trace element content, such as the few
                      microgram impurities, responsible for low cavity
                      performances if embedded in the equatorial region during
                      cavity manufacturing. The proposed setup is customized on
                      1.3 GHz TESLA-type niobium cavities: both the detector and
                      the X-ray excitation source are miniaturized so to allow the
                      probe to enter within the 70 mm iris diameter and aside of
                      the HOM couplers. The detection-excitation geometry is
                      focused on cavity cell equator surface located at about 103
                      mm from the cavity axis, with an intrinsic spot-size of
                      about 10 mm. The measuring head will be settled on a high
                      angular resolution optical inspection system at DESY,
                      exploiting the experience of OBACHT. Defect position is
                      obtained by means of angular inner surface scanning.
                      Quantitative determination of defect content can be carried
                      out by means of the so called fundamental parameters
                      technique with a Niobium standard calibration.},
      month         = {Sep},
      date          = {2013-09-23},
      organization  = {16th International Conference on RF
                       Superconductivity, Paris (France), 23
                       Sep 2013 - 27 Sep 2013},
      cin          = {FLA / MKS3 / MIN / MPL},
      cid          = {I:(DE-H253)FLA-20120731 / I:(DE-H253)MKS3-20210408 /
                      I:(DE-H253)MIN-20120731 / I:(DE-H253)MPL-20120731},
      pnm          = {Facility (machine) ILC $R\&D$ (POF2-ILC-20130405)},
      pid          = {G:(DE-H253)POF2-ILC-20130405},
      experiment   = {EXP:(DE-H253)ILC(machine)-20150101},
      typ          = {PUB:(DE-HGF)15},
      url          = {https://bib-pubdb1.desy.de/record/166446},
}