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Multi-Grid boron-10 detector for time-of-flight spectrometers in neutron scattering science
Linköping University, Thin Film Physics Division, IFM, Linköping.
Institute Laue Langevin, 71 avenue des Martyrs, Grenoble, France.
Institute Laue Langevin, 71 avenue des Martyrs, Grenoble, France.
Institute Laue Langevin, 71 avenue des Martyrs, Grenoble, France.
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2015 (Engelska)Ingår i: 2015 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2015, Institute of Electrical and Electronics Engineers (IEEE), 2015, artikel-id 7582004Konferensbidrag, Publicerat paper (Refereegranskat)
Abstract [en]

The Multi-Grid (MG) detector has been introduced at ILL and developed by a collaboration between ILL, ESS and Linkoping University. This detector design addresses the severely decreased availability of He3, in particular for neutron scattering instruments with large-area detectors, such as time-of-flight neutron spectrometers at ESS and other facilities. The MG detector is based on thin converter films of boron-10 carbide arranged in layers orthogonal to the incoming neutrons. The design of the detector provides position resolution, efficiency competitive with He3 and a strong gamma rejection capability. This paper presents the MG large-area (2.4m2) demonstrator and the progress made in order to meet the needs of production of B4C-coated layers, mechanical parts and assembly on a scale similar to that of the final detectors for ESS. A particular effort was made to produce aluminium detector parts with a low alpha background, successfully reducing the background rate to acceptable levels. Following the IN5 demonstrator, a compact prototype has been designed in order to finalise the electronic readout to be used at the ESS instruments equipped with the MG.

Ort, förlag, år, upplaga, sidor
Institute of Electrical and Electronics Engineers (IEEE), 2015. artikel-id 7582004
Nyckelord [en]
Helium-3 alternatives, Multi-Grid detector, Time of flight spectrometer
Nationell ämneskategori
Elektroteknik och elektronik
Identifikatorer
URN: urn:nbn:se:miun:diva-29399DOI: 10.1109/NSSMIC.2015.7582004Scopus ID: 2-s2.0-84994096884ISBN: 9781467398626 (tryckt)OAI: oai:DiVA.org:miun-29399DiVA, id: diva2:1051678
Konferens
2015 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2015, 31 October 2015 through 7 November 2015
Tillgänglig från: 2016-12-02 Skapad: 2016-12-02 Senast uppdaterad: 2017-01-03Bibliografiskt granskad

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Hall-Wilton, Richard J.

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