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@ARTICLE{Khli:824331,
      author       = {Köhli, M. and Allmendinger, F. and Häußler, W. and
                      Schröder, T. and Klein, M. and Meven, M. and Schmidt, U.},
      title        = {{E}fficiency and spatial resolution of the {CASCADE}
                      thermal neutron detector},
      journal      = {Nuclear instruments $\&$ methods in physics research / A},
      volume       = {828},
      issn         = {0168-9002},
      address      = {Amsterdam},
      publisher    = {North-Holland Publ. Co.},
      reportid     = {FZJ-2016-06940},
      pages        = {242 - 249},
      year         = {2016},
      abstract     = {We report on the CASCADE project – a detection system,
                      which has been designed for the purposes of neutron Spin
                      Echo spectroscopy and which is continuously further
                      developed and adapted to various applications. It features
                      2D spatially resolved detection of thermal neutrons at high
                      rates. The CASCADE detector is composed of a stack of solid
                      10B coated Gas Electron Multiplier foils, which serve both
                      as a neutron converter and as an amplifier for the primary
                      ionization deposited in the standard counting gas
                      environment. This multi-layer setup efficiently increases
                      the detection efficiency and by extracting the signal of the
                      charge traversing the stack the conversion layer can be
                      identified allowing a precise determination of the
                      time-of-flight. The spatial resolution is found by optical
                      contrast determination to be View the MathML
                      sourceσ=(1.39±0.05)mm and by divergence corrected aperture
                      measurements View the MathML sourceσ=(1.454±0.007)mm,
                      which is in agreement with the simulated detector model.
                      Furthermore this enabled to investigate and describe the
                      non-Gaussian resolution function. At the HEiDi
                      diffractometer the absolute detection efficiency has been
                      studied. At 0.6 Å for the 6 layer detector, which is
                      currently part of the RESEDA spectrometer, an efficiency of
                      $7.8\%$ has been measured, which by means of Monte Carlo
                      simulations translates to $(21.0±1.5)\%$ for thermal
                      neutrons at 1.8 Å and $(46.9±3.3)\%$ at 5.4 Å.},
      cin          = {JCNS (München) ; Jülich Centre for Neutron Science JCNS
                      (München) ; JCNS-FRM-II / JCNS-2},
      ddc          = {530},
      cid          = {I:(DE-Juel1)JCNS-FRM-II-20110218 /
                      I:(DE-Juel1)JCNS-2-20110106},
      pnm          = {6G4 - Jülich Centre for Neutron Research (JCNS) (POF3-623)
                      / 6G15 - FRM II / MLZ (POF3-6G15)},
      pid          = {G:(DE-HGF)POF3-6G4 / G:(DE-HGF)POF3-6G15},
      experiment   = {EXP:(DE-MLZ)HEIDI-20140101 / EXP:(DE-MLZ)RESEDA-20140101},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000377399700029},
      doi          = {10.1016/j.nima.2016.05.014},
      url          = {https://juser.fz-juelich.de/record/824331},
}