Neutron imaging and tomography with MCPS

Serge Duarte Pinto, R Ortega, S. Ritzau, D Pasquale, B. Laprade, S. Mrotek, S. Gardell, Zhou Zhou, Jeroen Plomp, Lambert van Eijck, H. Bilheux, I. Dhiman

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

5 Citations (Scopus)
51 Downloads (Pure)

Abstract

A neutron imaging detector based on neutron-sensitive microchannel plates (mcps) was constructed and tested at beamlines of thermal and cold neutrons. The mcps are made of a glass mixture containing 10B and natural Gd, which makes the bulk of the mcp an efficient neutron converter. Contrary to the neutron-sensitive scintillator screens normally used in neutron imaging, spatial resolution is not traded off with detection efficiency. While the best neutron imaging scintillators have a detection efficiency around a percent, a detection efficiency of around 50% for thermal neutrons and 70% for cold neutrons has been demonstrated with these mcps earlier. Our tests show a performance similar to conventional neutron imaging detectors, apart from the orders of magnitude better sensitivity. We demonstrate a spatial resolution better than 150 Um. The sensitivity of this detector allows fast tomography and neutron video recording, and will make smaller reactor sites and even portable sources suitable for neutron imaging.
Original languageEnglish
Title of host publication19th International Workshop on Radiation Imaging Detectors (IWORID 2017)
Pages1-8
DOIs
Publication statusPublished - 2017
EventIWORID 2017: 19th International Workshop on Radiation Imaging Detectors - Krakow, Poland
Duration: 2 Jul 20176 Jul 2017
Conference number: 19

Publication series

NameJournal of Instrumentation
PublisherIOP
Volume12

Workshop

WorkshopIWORID 2017
CountryPoland
CityKrakow
Period2/07/176/07/17

Keywords

  • Electron multipliers (vacuum)
  • Neutron detectors (cold, thermal, fast neutrons)
  • Neutron radiography
  • Vacuum-based detectors

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