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Performance of the high-efficiency thermal neutron BAND-GEM detector

Muraro, Andrea (author)
Assoc EURATOM ENEA CNR, Milan, Italy
Croci, Gabriele (author)
Assoc EURATOM ENEA CNR, Milan, Italy; Univ Milano Bicocca, Milan, Italy; Ist Nazl Fis Nucl, Sez Milano Bicocca, Milan, Italy
Cippo, Enrico Perelli (author)
Assoc EURATOM ENEA CNR, Milan, Italy
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Grosso, Giovanni (author)
Assoc EURATOM ENEA CNR, Milan, Italy
Höglund, Carina (author)
Linköpings universitet,Tunnfilmsfysik,Tekniska fakulteten,European Spallat Source ESS AB, Sweden
Albani, Giorgia (author)
Univ Milano Bicocca, Milan, Italy
Hall-Wilton, Richard (author)
Mittuniversitetet,Avdelningen för elektronikkonstruktion,European Spallat Source, Lund,European Spallat Source ESS AB, Sweden; Mid Sweden Univ, Sweden
Kanaki, Kalliopi (author)
European Spallat Source, Lund,European Spallat Source ESS AB, Sweden
Murtas, Fabrizio (author)
Ist Nazl Fis Nucl, Lab Nazl Frascati, Frascati, Italy
Raspino, Davide (author)
Rutherford Appleton Lab, Oxon, England
Robinson, Linda (author)
European Spallat Source, Lund,European Spallat Source ESS AB, Sweden
Rodhes, Nigel (author)
Rutherford Appleton Lab, Oxon, England
Rebai, Marica (author)
Univ Milano Bicocca, Milan, Italy
Schmidt, Susann (author)
Linköpings universitet,Tunnfilmsfysik,Tekniska fakulteten,European Spallat Source ESS AB, Sweden
Schooneveld, Erik (author)
Rutherford Appleton Lab, Oxon, England
Tardocchi, Marco (author)
Assoc EURATOM ENEA CNR, Milan, Italy
Gorini, Giuseppe (author)
Univ Milano Bicocca, Milan, Italy; Ist Nazl Fis Nucl, Sez Milano Bicocca, Milan, Italy
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 (creator_code:org_t)
2018-02-28
2018
English.
In: Progress of Theoretical and Experimental Physics. - : Oxford University Press (OUP). - 2050-3911. ; :2
  • Journal article (peer-reviewed)
Abstract Subject headings
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  • Newhigh-count-rate detectors are required for future spallation neutron sources where large-area and high-efficiency (>50%) detectors are envisaged. In this framework, Gas Electron Multiplier (GEM) is one of the detector technologies being explored, since it features good spatial resolution (<0.5 cm) and timing properties, has excellent rate capability (MHz/mm(2)) and can cover large areas (some m(2)) at low cost. In the BAND-GEM (boron array neutron detector GEM) approach a 3D geometry for the neutron converter cathode was developed that is expected to provide an efficiency >30% in thewavelength range of interest for small angle neutron scattering instruments. A system of aluminum grids with thin walls coated with a 0.59 mu m layer of (B4C)-B-10 has been built and positioned in the first detector gap, orthogonally to the cathode. By tilting the grid system with respect to the beam, there is a significant increase of effective thickness of the borated material crossed by the neutrons. As a consequence, both interaction probability and detection efficiency are increased. This paper presents the results of the performance of the BAND-GEM detector in terms of efficiency and spatial resolution.

Subject headings

TEKNIK OCH TEKNOLOGIER  -- Elektroteknik och elektronik (hsv//swe)
ENGINEERING AND TECHNOLOGY  -- Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)
NATURVETENSKAP  -- Fysik -- Acceleratorfysik och instrumentering (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences -- Accelerator Physics and Instrumentation (hsv//eng)

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