Commissioning of the NDDL-40 Micro-Channel Plate Neutron Detector System at Oregon State University
Nicholas M. Boulton, Steven R. Reese, Aaron E. Craftdownload PDF
Abstract. The Neutron Radiography Facility (NRF) at Oregon State University (OSU) has been modified to begin working on the non-destructive evaluation of concrete materials to study the early stages of shrinkage, cracking, and water transport of concrete during the curing process. The objective of this work was to investigate the efficiency and spatial resolution of the NDDL 40 micro-channel plate (MCP) detector for the use of neutron radiography and tomography to determine its applicability for examining concrete. Working in collaboration with the School of Civil and Construction Engineering, the NRF at OSU has added a NDDL-40 vacuum-sealed neutron imaging detection system with a delay line system readout developed by NOVA Scientific. This study found that the system installed at the NRF was capable of a maximum spatial resolution of ~250 μm with a neutron detection efficiency of 5.49%. Significant artifacts from the detector system and image noise degraded the quality of the tomographic reconstruction to such an extent that this neutron imaging system could not be used to visualize the desired phenomena in concrete.
Neutron Radiography, Neutron Tomography, Micro-Channel Plate
Published online 1/5/2020, 6 pages
Copyright © 2020 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA
Citation: Nicholas M. Boulton, Steven R. Reese, Aaron E. Craft, Commissioning of the NDDL-40 Micro-Channel Plate Neutron Detector System at Oregon State University, Materials Research Proceedings, Vol. 15, pp 86-91, 2020
The article was published as article 14 of the book Neutron Radiography
Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
 W.J. Williams, “Neutron Radiography and Tomography: Determining and Optimizing Resolution of Neutron Sensitive Multi Channel Plate Detectors,” Corvallis, 2013.
 O. H. Siegmund, J. V. Vallerga, A.S. Tremsin, J. Mcphate and B. Feller, “High Spatial Resolution Neutron Sensing Mincochannel Plate Detectors,” Nuclear Instruments and Methods in Physics Research A 576, 178-182, 2007. https://doi.org/10.1016/j.nima.2007.01.148
 C.D. Ertley, O.H.W. Siegmund, J. Hull, A. Tremsin, A. O’Mahony, C.A. Craven, and M.J. Minot, “Microchannel Plate Imaging Detectors for High Dynamic Range Applications,” IEEE Trans. Nuc. Sci. 64(7) 1774-1780, 2017. https://doi.org/10.1109/TNS.2017.2652222
 A.S. Tremsin, S.C. Vogel, M. Mocko, M A M Bourke, V. Yuan, R.O. Nelson, D.W. Brown, and W.B. Feller, “Non-destructive studies of fuel pellets by neutron resonance absorption radiography and thermal neutron radiography,” Nuc. Mat. 440, 633-646, 2013. https://doi.org/10.1016/j.jnucmat.2013.06.007
 Tremsin, A.S., Craft, A.E., G.C. Papaioannou, et al., “On the possibility to investigate irradiated fuel pins nondestructively by digital neutron radiography with a neutron-sensitive microchannel plate detector with Timepix readout,” Nucl. Instr. Meth. in Physics Research A, 927, 109-118, 2019. https://doi.org/10.1016/j.nima.2019.02.012
 Tremsin, A.S., Craft, A.E., A.M.M. Bourke, et al., 2018. Digital neutron and gamma-ray radiography in high radiation environments with an MCP/Timepix detector. Nucl. Instr. Meth. in Physics Research A 902, 110-116, 2018. https://doi.org/10.1016/j.nima.2018.05.069
 ASTM E545-15, “Standard Test Method for Determining Image quality in Direct Thermal Neutron Radiographic Examination,” ASTM International, West Conshohocken, PA, 2014.
 W. Rasband, “ImageJ,” 1997. [Online]. Available: http://imagej.nih.gov.
 Octopus Imaging, Octopus Reconstruction User Manual, Ghent, 2016.