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@INPROCEEDINGS{Hillert:301889,
      author       = {Hillert, S. and Holl, P. and Lechner, P. and Ischebeck, R.
                      and Karstensen, S. and Muller, U. C. and Ng, J. S. T. and
                      Roth, S. and Petzold, G. and Thom, H.},
      title        = {{T}he {B}eam {T}rajectory {M}onitor for the {TTF}-{FEL} at
                      {DESY}},
      address      = {Hamburg},
      publisher    = {DESY},
      reportid     = {PUBDB-2016-02948, DESY-M-00-04ZD},
      pages        = {1803-1805},
      year         = {2000},
      abstract     = {The design, construction and first tests of a prototype of
                      the beam trajectory monitor at the TTF-FEL are presented.
                      With this monitor the off-axis spontaneous undulator
                      radiation is imaged through a set of pinholes onto silicon
                      pixel detectors. This allows to measure simultaneously 12
                      points of the transverse beam position with an accuracy of
                      better than 10 $\mu$m over a length of 5 m. The prototype
                      consists of a pinhole mask and the pixel detectors
                      accurately placed to each other inside a vacuum chamber
                      which is held under beam vacuum. We first present the design
                      and the production technology of the silicon pixel detector.
                      Then the optimization of the pinhole mask and its
                      realization using lithographic methods are discussed. To
                      determine its spatial accuracy the detector is scanned using
                      a laser test stand and a low-intensity electron beam of an
                      electron microscope. The symmetry axis of the detector
                      defines a straight line within 0.4 $\mu$m. Additionally, the
                      electron microscope is used to study the radiation hardness
                      of the detector. The sensitivity of the detector to low
                      energy X-rays is measured using a vacuum ultraviolet beam at
                      the synchrotron light source HASYLAB. Finally first
                      calibration measurementsof the BTM prototype detectors are
                      shown.},
      month         = {Jun},
      date          = {2000-06-26},
      organization  = {The 7th European Particle Accelerator
                       Conference EPAC 2000, Vienna (Austria),
                       26 Jun 2000 - 30 Jun 2000},
      keywords     = {talk: Vienna 2000/06/26 (INSPIRE) / electron positron:
                      linear collider (INSPIRE) / linear collider: proposed
                      (INSPIRE) / free electron laser (INSPIRE) / beam monitoring:
                      beam position (INSPIRE) / magnet: undulator (INSPIRE) /
                      synchrotron radiation (INSPIRE) / semiconductor detector:
                      pixel (INSPIRE) / radiation: damage (INSPIRE) / DESY TESLA
                      Linac (INSPIRE)},
      cin          = {M(-2012)},
      cid          = {$I:(DE-H253)M_-2012_-20130307$},
      pnm          = {No facility / HGF program None (POF1-890)},
      pid          = {G:(DE-H253)POF1-HGF-No-Prog-20130405},
      experiment   = {EXP:(DE-MLZ)NOSPEC-20140101},
      typ          = {PUB:(DE-HGF)29 / PUB:(DE-HGF)8},
      doi          = {10.3204/PUBDB-2016-02948},
      url          = {https://bib-pubdb1.desy.de/record/301889},
}