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First Measurements with New High-Resolution Gadolinium-GEM Neutron Detectors

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      Abstract

      European Spallation Source instruments like the macromolecular diffractometer, NMX, require an excellent neutron detection efficiency, high-rate capabilities, time resolution, and an unprecedented spatial resolution in the order of a few hundred micrometers over a wide angular range of the incoming neutrons. For these instruments solid converters in combination with Micro Pattern Gaseous Detectors (MPGDs) are a promising option. A GEM detector with gadolinium converter was tested on a cold neutron beam at the IFE research reactor in Norway. The {\mu}TPC analysis, proven to improve the spatial resolution in the case of \(^{10}\)B converters, is extended to gadolinium based detectors. For the first time, a Gd-GEM was successfully operated to detect neutrons with a measured efficiency of 11.8% at a wavelength of 2 {\AA} and a position resolution better than 250 {\mu}m.

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      Journal
      2015-10-08
      2016-05-02
      1510.02365

      http://arxiv.org/licenses/nonexclusive-distrib/1.0/

      Custom metadata
      18 pages, 10 figures, 2 tables
      physics.ins-det

      Technical & Applied physics

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