Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8177637 | Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment | 2014 | 8 Pages |
Abstract
A scintillator-based neutron-counting imaging detector with a sub-100-μm spatial resolution was developed for energy-selective neutron imaging. The detector head of the detector comprised a thin ZnS/6LiF scintillator screen, a fibre-optic taper and crossed wavelength-shifting (WLS) fibre arrays. A high spatial resolution was achieved by constructing the scintillator with a thickness of 100 μm and placing it in contact with the fibre-optic taper at a magnification ratio of 3.1:1. WLS fibres with a diameter of 100±5 μm (mean±SD) were specially made, and their dye content was optimized for use in crossed WLS-fibre arrays. The developed detector had a pixel size of 34 μmÃ34 μm, and exhibited spatial FWHM resolutions of 80±7 μm and 61±6 μm in the x and y directions, respectively. A small prototype detector demonstrated the capability of neutron imaging using Bragg edges of a Cu/Fe sample when using the pulsed-neutron source in the Materials and Life Science Experimental Facility at the Japan Proton Accelerator Research Complex.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Instrumentation
Authors
T. Nakamura, K. Toh, T. Kawasaki, K. Honda, H. Suzuki, M. Ebine, A. Birumachi, K. Sakasai, K. Soyama, M. Katagiri,