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@ARTICLE{Houston:844558,
      author       = {Houston, Judith Elizabeth and Brandl, Georg and Drochner,
                      Matthias and Kemmerling, Günter and Engels, Ralf and
                      Papagiannopoulos, Aristeidis and Sarter, Mona and Stadler,
                      Andreas and Radulescu, Aurel},
      title        = {{T}he high-intensity option of the {SANS} diffractometer
                      {KWS}-2 at {JCNS} – characterization and performance of
                      the new multi-megahertz detection system},
      journal      = {Journal of applied crystallography},
      volume       = {51},
      number       = {2},
      issn         = {0021-8898},
      address      = {Copenhagen},
      publisher    = {Munksgaard},
      reportid     = {FZJ-2018-01965},
      pages        = {323 - 336},
      year         = {2018},
      abstract     = {A new detection system based on an array of 3He tubes and
                      innovative fast detection electronics has been installed on
                      the high-intensity small-angle neutron scattering (SANS)
                      diffractometer KWS-2 operated by the Jülich Centre for
                      Neutron Science (JCNS) at the Heinz Meier-Leibnitz Zentrum
                      in Garching, Germany. The new detection system is composed
                      of 18 eight-pack modules of 3He tubes that work
                      independently of one another (each unit has its own
                      processor and electronics). To improve the read-out
                      characteristics and reduce the noise, the detection
                      electronics are mounted in a closed case on the rear of the
                      3He tubes' frame. The tubes' efficiency is about $85\%$ (for
                      λ = 5 Å) and the resolution slightly better than 8 mm.
                      The new detection system is characterized by a dead-time
                      constant of 3.3 µs per tube and an overall count rate as
                      high as 6 MHz at $10\%$ dead-time loss. Compared with the
                      old detector this is an improvement by a factor of 60. The
                      much higher count rate will shorten the measurement times
                      and thus increase the number of experiments possible in a
                      given time period by the optimal use of the high flux of up
                      to 2 × 108 n cm−2 s−1 at the sample position.
                      Combined with the event-mode operation capability, this will
                      enable new scientific opportunities in the field of
                      structural investigations of small soft-matter and
                      biological systems. The implementation of the detector in
                      the high-intensity concept on KWS-2, its characterization
                      and its performance based on test experiments are reported
                      in this paper.},
      cin          = {Neutronenstreuung ; JCNS-1 / JCNS-2 / JCNS-FRM-II},
      ddc          = {540},
      cid          = {I:(DE-Juel1)JCNS-1-20110106 / I:(DE-Juel1)JCNS-2-20110106 /
                      I:(DE-Juel1)JCNS-FRM-II-20110218},
      pnm          = {6215 - Soft Matter, Health and Life Sciences (POF3-621) /
                      6G15 - FRM II / MLZ (POF3-6G15) / 6G4 - Jülich Centre for
                      Neutron Research (JCNS) (POF3-623)},
      pid          = {G:(DE-HGF)POF3-6215 / G:(DE-HGF)POF3-6G15 /
                      G:(DE-HGF)POF3-6G4},
      experiment   = {EXP:(DE-MLZ)KWS2-20140101},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:29657566},
      UT           = {WOS:000429090100010},
      doi          = {10.1107/S1600576718004132},
      url          = {https://juser.fz-juelich.de/record/844558},
}