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A Scintillator-based detector with sub-100-$$mu$$m spatial resolution comprising a fibre-optic taper with wavelength-shifting fibre readout for time-of-flight neutron imaging

Nakamura, Tatsuya; To, Kentaro; Kawasaki, Takuro; Honda, Katsunori; Suzuki, Hiroyuki; Ebine, Masumi; Birumachi, Atsushi; Sakasai, Kaoru; Soyama, Kazuhiko; Katagiri, Masaki*

A scintillator-based neutron-counting imaging detector with a sub-100-$$mu$$m spatial resolution was developed for energy-selective neutron imaging. The detector head of the detector comprised a thin ZnS/$$^{6}$$LiF scintillator screen, a fibre-optic taper and crossed wavelength-shifting (WLS) fibre arrays. The developed detector had a pixel size of 34 $$mu$$m $$times$$ 34 $$mu$$m, and exhibited spatial FWHM resolutions of 80 $$mu$$m and 61 $$mu$$m 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.

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Category:Instruments & Instrumentation

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