Neutron imaging and tomography with MCPS

Conference paper (2017)

Authors

S.C. Duarte Pinto Photonis Technologies S.A.S.
R Ortega Photonis Technologies S.A.S.
H. Bilheux Oak Ridge National Laboratory
I. Dhiman Oak Ridge National Laboratory
S. Ritzau Photonis Technologies S.A.S.
D Pasquale Photonis Technologies S.A.S.
B. Laprade Photonis Technologies S.A.S.
S. Mrotek Photonis Technologies S.A.S.
S. Gardell Photonis Technologies S.A.S.
Z. Zhou RST/Neutron and Positron Methods in Materials - AS
J. Plomp RST/Neutron and Positron Methods in Materials - AS
L. van Eijck RST/Neutron and Positron Methods in Materials - AS
Research Group
RST/Neutron and Positron Methods in Materials (AS) (TU Delft)
Copyright: © 2017 S.C. Duarte Pinto, R Ortega, S. Ritzau, D Pasquale, B. Laprade, S. Mrotek, S. Gardell, Z. Zhou, J. Plomp, L. van Eijck, H. Bilheux, I. Dhiman
DOI
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https://doi.org/10.1088/1748-0221/12/12/C12006
Electron multipliers (vacuum) Vacuum-based detectors Neutron radiography Neutron detectors (cold, thermal, fast neutrons)
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Published Date

2017

Language

English

Reuse Rights

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Faculty

Applied Sciences

Department

RST/Radiation, Science and Technology

Research Group

RST/Neutron and Positron Methods in Materials

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.