Multi-Grid boron-10 detector for time-of-flight spectrometers in neutron scattering scienceShow others and affiliations
2015 (English)In: 2015 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2015, Institute of Electrical and Electronics Engineers (IEEE), 2015, article id 7582004Conference paper, Published paper (Refereed)
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.
Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers (IEEE), 2015. article id 7582004
Keywords [en]
Helium-3 alternatives, Multi-Grid detector, Time of flight spectrometer
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:miun:diva-29399DOI: 10.1109/NSSMIC.2015.7582004ISI: 000413680600286Scopus ID: 2-s2.0-84994096884ISBN: 9781467398626 (print)OAI: oai:DiVA.org:miun-29399DiVA, id: diva2:1051678
Conference
2015 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2015, 31 October 2015 through 7 November 2015
2016-12-022016-12-022020-09-25Bibliographically approved