Multi-Grid boron-10 detector for time-of-flight spectrometers in neutron scattering science

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceeding

Abstract

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.

Details

Authors
  • J. Birch
  • J. C. Buffet
  • J. F. Clergeau
  • P. Van Esch
  • M. Etxegarai
  • M. Ferraton
  • B. Guerard
  • R. Hall-Wilton
  • L. Hultman
  • C. Höglund
  • A. Khaplanov
  • F. Piscitelli
  • I. Stefanescu
External organisations
  • Linköping University
  • Institut Laue Langevin
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Accelerator Physics and Instrumentation

Keywords

  • Helium-3 alternatives, Multi-Grid detector, Time of flight spectrometer
Original languageEnglish
Title of host publication2015 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781467398626
Publication statusPublished - 2016 Oct 3
Publication categoryResearch
Peer-reviewedYes
Event2015 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2015 - San Diego, United States
Duration: 2015 Oct 312015 Nov 7

Conference

Conference2015 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2015
CountryUnited States
CitySan Diego
Period2015/10/312015/11/07